CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
6
-
2
2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
6
-
2
2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
6
-
3
608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
SPECIFIC APPLIANCES
6
-
4
2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
6
-
2
2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
6
-
3
608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
SPECIFIC APPLIANCES
6
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
6
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2
2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
6
-
3
608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
SPECIFIC APPLIANCES
6
-
4
2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
6
-
5
611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
6
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2
2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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2022 NEW YORK CITY FUEL GAS CODE
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608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
. to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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2022 NEW YORK CITY FUEL GAS CODE
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
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2022 NEW YORK CITY FUEL GAS CODE
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Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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2022 NEW YORK CITY FUEL GAS CODE
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608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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2022 NEW YORK CITY FUEL GAS CODE
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
6
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7
616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
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Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
SPECIFIC APPLIANCES
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
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2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
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Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
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2022 NEW YORK CITY FUEL GAS CODE
623.5.1 Clearances.
A minimum clearance of 24 inches (
609.6
mm) shall be maintained between the cooking top 
and combustible material above th
e hood. The hood shall be at least as wide as the open
-
top broiler unit and be 
centered over the unit.
623.6 Commercial cooking appliance venting.
Commercial cooking appliances, other than those exempted by Sec-
tion 501.8, shall be vented by connecting the 
appliance to a vent or chimney in accordance with this code and the 
appliance manufacturer’s instructions or the appliance shall be vented in accordance with Section 505.1.1.
623.7 Domestic ventilation.
When a hood is provided for a domestic cooking applia
nce, the exhaust and make
-
up air 
systems shall be properly engineered and designed in accordance with Chapter 5 of this code and the 
New York City 
Mechanical Code
.
Household cooking appliances shall have a vertical clearance above the cooking top of not le
ss 
than 30 inches (760 mm) to combustible material and metal cabinets. A minimum clearance of 24 inches (
609.6
mm)
, 
measured to the underside of the above cabinet or combustible material,
is permitted where one of the following is 
installed:
1.
The undersi
de of the combustible material or metal cabinet above the cooking top is protected with not less than 
1
/
4
-
inch (
6.4
mm) insulating millboard covered with sheet metal not less than 0.0122 inch (0.3 mm) thick.
2.
A metal ventilating hood constructed of sheet metal not less than 0.0122 inch (0.3 mm) thick is installed above 
the cooking top with a clearance of not less tha
n 
1
/
4
inch (6.4 mm) between the hood and the underside of the 
combustible material or metal cabinet. The hood shall have a width not less than the width of the appliance and 
shall be centered over the appliance.
3.
A listed cooking appliance or microwave o
ven is installed over a listed cooking appliance and in compliance 
with the terms of the manufacturer’s installation instructions for the upper appliance.
SECTION FGC 624
WATER HEATERS
624.1 General.
Water heaters shall be tested in accordance with 
ANSI Z21.10.1
/CSA 4.1
and ANSI Z21.10.3
/CSA 
4.3
and shall be installed in accordance with the manufacturer’s 
instructions
. Water heaters utilizing fuels other than 
fuel gas shall be regulated by the 
New Yor
k City Mechanical Code
. Approval for water heaters 350,000 Btu/h input 
(
102.6
kW) and above shall be obtained from the New York City Department of Environmental Protection.
624.1.1 Installation requirements.
The requirements for water heaters relative to s
izing, relief valves, drain pans 
and scald protection shall be in accordance with the 
New York City
Plumbing Code
and the following:
1.
No person shall install or maintain in any dwelling unit a gas fuel
-
fired water heater unless the heater obtains 
combust
ion air directly from the outside of the building.
2.
No person shall install or maintain a gas
-
fueled water heater in a room occupied for sleeping purposes, or 
cause or permit to be occupied for sleeping purposes any room in which a gas
-
fueled heater is i
nstalled.
3.
Each heater shall be connected to a flue or outlet pipe.
624.2 Water heaters utilized for space heating.
Water heaters utilized both to supply potable hot water and provide 
hot water for space
-
heating applications shall be listed and labeled f
or such applications by the manufacturer, and shall 
be 
built in accordance with Section IV of the ASME 
Boiler and Pressure Vessel Code
with an “H” code stamp. They 
shall be
installed in accordance with the manufacturer’s 
instructions
, the ASME 
Boiler and Pressure Vessel Code
and 
the 
New York City
Plumbing Code
.
SECTION FGC 625
REFRIGERATORS
625.1 General.
Refrigerators shall be tested in accordance with ANSI Z21.19
/CSA 1.4
a
nd shall be installed in ac-
cordance with the manufacturer’s 
instructions
.
Refrigerators shall be provided with adequate clearances for ventilation at the top and back, and shall be installed 
in accordance with the manufacturer’s instructions. If such instr
uctions are not available, 
not less than
2 inches (
50.8
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
6
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11
mm) shall be provided between the back of the refrigerator and the wall and 
not less than
12 inches (
304.8
mm) above 
the top.
SECTION FGC 626
GAS
-
FIRED TOILETS
626.1 General.
Gas
-
fired toilets are 
not
approved
for use 
in New York City
.
626.2 Reserved.
SECTION FGC 627
AIR CONDITIONING APPLIANCES
627.1 General.
Gas
-
fired air
-
conditioning appliances shall be tested in accordance with ANSI Z21.40.1
/CGA 2.91
or 
ANSI Z21.40.2
/CGA 2.92
and shall be installed in accordance with the manufacturer’s 
instructions
.
627.2 Independent piping.
Gas piping serving heating appli
ances shall be permitted to also serve cooling appliances 
where such heating and cooling appliances cannot be operated simultaneously (see Section 402).
627.3 Connection of gas engine
-
powered air conditioners.
To protect against the effects of normal vibra
tion in 
service, gas engines shall not be rigidly connected to the gas supply piping. 
Where units are powered by internal 
combustion engines and turbines, installation shall comply with Section 616.1.
627.4 Clearances for indoor installation.
Air
-
condition
ing appliances installed in rooms other than alcoves and 
closets shall be installed with clearances not less than those specified in Section 
308.3
.
Exceptions:
1.
Air
-
conditioning appliances listed for installation at lesser clearances than those specified
in Section 308.3 
shall be permitted to be installed in accordance with such listing and the manufacturer’s instructions
.
Air
-
conditioning appliances installed in rooms other than alcoves and closets shall be permitted to be installed 
with reduced clearanc
es to combustible material, provided that the combustible material is protected in ac-
cordance with Table 308.2.
2.
Air
-
conditioning
appliances listed for installation at greater clearances than those specified in Section 308.3 
shall be installed in accorda
nce with such listing and the manufacturer’s instructions.
627.5 Alcove and closet installation.
Air
-
conditioning appliances installed in spaces such as alcoves and closets shall 
be specifically listed for such installation and installed in accordance with
the terms of such listing. The installation 
clearances for air
-
conditioning appliances in alcoves and closets shall not be reduced by the protection methods de-
scribed in Table 308.2.
627.6 Installation.
Air
-
conditioning appliances shall be installed in ac
cordance with the manufacturer’s instructions. 
Unless the appliance is listed for installation on a combustible surface such as a floor or roof, or unless the surface is 
protected in an approved manner, 
the appliance
shall be installed on a surface of nonc
ombustible construction with 
noncombustible material and surface finish and with no combustible material against the underside thereof.
627.7 Plenums and air ducts.
A plenum supplied as a part of the air
-
conditioning appliance shall be installed in 
accorda
nce with the appliance manufacturer’s instructions. Where a plenum is not supplied with the appliance, such 
plenum shall be installed in accordance with the fabrication and installation instructions provided by the plenum and 
appliance manufacturer. The me
thod of connecting supply and return ducts shall facilitate proper circulation of air.
Where 
the
air
-
conditioning appliance is installed within a space separated from the spaces served by the appliance, 
the air circulated by the appliance shall be conveyed
by ducts that are sealed to the casing of the appliance and that 
separate the circulating air from the combustion and ventilation air.
627.8 Refrigeration coils.
A refrigeration coil shall not be installed in conjunction with a forced
-
air furnace where 
circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the 
external static resistance imposed by the duc
t system and cooling coil at the air throughput necessary for heating or 
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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2022 NEW YORK CITY FUEL GAS CODE
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608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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2022 NEW YORK CITY FUEL GAS CODE
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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6
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
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7
616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
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2022 NEW YORK CITY FUEL GAS CODE
2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
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2022 NEW YORK CITY FUEL GAS CODE
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9
Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
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2022 NEW YORK CITY FUEL GAS CODE
623.5.1 Clearances.
A minimum clearance of 24 inches (
609.6
mm) shall be maintained between the cooking top 
and combustible material above th
e hood. The hood shall be at least as wide as the open
-
top broiler unit and be 
centered over the unit.
623.6 Commercial cooking appliance venting.
Commercial cooking appliances, other than those exempted by Sec-
tion 501.8, shall be vented by connecting the 
appliance to a vent or chimney in accordance with this code and the 
appliance manufacturer’s instructions or the appliance shall be vented in accordance with Section 505.1.1.
623.7 Domestic ventilation.
When a hood is provided for a domestic cooking applia
nce, the exhaust and make
-
up air 
systems shall be properly engineered and designed in accordance with Chapter 5 of this code and the 
New York City 
Mechanical Code
.
Household cooking appliances shall have a vertical clearance above the cooking top of not le
ss 
than 30 inches (760 mm) to combustible material and metal cabinets. A minimum clearance of 24 inches (
609.6
mm)
, 
measured to the underside of the above cabinet or combustible material,
is permitted where one of the following is 
installed:
1.
The undersi
de of the combustible material or metal cabinet above the cooking top is protected with not less than 
1
/
4
-
inch (
6.4
mm) insulating millboard covered with sheet metal not less than 0.0122 inch (0.3 mm) thick.
2.
A metal ventilating hood constructed of sheet metal not less than 0.0122 inch (0.3 mm) thick is installed above 
the cooking top with a clearance of not less tha
n 
1
/
4
inch (6.4 mm) between the hood and the underside of the 
combustible material or metal cabinet. The hood shall have a width not less than the width of the appliance and 
shall be centered over the appliance.
3.
A listed cooking appliance or microwave o
ven is installed over a listed cooking appliance and in compliance 
with the terms of the manufacturer’s installation instructions for the upper appliance.
SECTION FGC 624
WATER HEATERS
624.1 General.
Water heaters shall be tested in accordance with 
ANSI Z21.10.1
/CSA 4.1
and ANSI Z21.10.3
/CSA 
4.3
and shall be installed in accordance with the manufacturer’s 
instructions
. Water heaters utilizing fuels other than 
fuel gas shall be regulated by the 
New Yor
k City Mechanical Code
. Approval for water heaters 350,000 Btu/h input 
(
102.6
kW) and above shall be obtained from the New York City Department of Environmental Protection.
624.1.1 Installation requirements.
The requirements for water heaters relative to s
izing, relief valves, drain pans 
and scald protection shall be in accordance with the 
New York City
Plumbing Code
and the following:
1.
No person shall install or maintain in any dwelling unit a gas fuel
-
fired water heater unless the heater obtains 
combust
ion air directly from the outside of the building.
2.
No person shall install or maintain a gas
-
fueled water heater in a room occupied for sleeping purposes, or 
cause or permit to be occupied for sleeping purposes any room in which a gas
-
fueled heater is i
nstalled.
3.
Each heater shall be connected to a flue or outlet pipe.
624.2 Water heaters utilized for space heating.
Water heaters utilized both to supply potable hot water and provide 
hot water for space
-
heating applications shall be listed and labeled f
or such applications by the manufacturer, and shall 
be 
built in accordance with Section IV of the ASME 
Boiler and Pressure Vessel Code
with an “H” code stamp. They 
shall be
installed in accordance with the manufacturer’s 
instructions
, the ASME 
Boiler and Pressure Vessel Code
and 
the 
New York City
Plumbing Code
.
SECTION FGC 625
REFRIGERATORS
625.1 General.
Refrigerators shall be tested in accordance with ANSI Z21.19
/CSA 1.4
a
nd shall be installed in ac-
cordance with the manufacturer’s 
instructions
.
Refrigerators shall be provided with adequate clearances for ventilation at the top and back, and shall be installed 
in accordance with the manufacturer’s instructions. If such instr
uctions are not available, 
not less than
2 inches (
50.8
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2022 NEW YORK CITY FUEL GAS CODE
6
-
11
mm) shall be provided between the back of the refrigerator and the wall and 
not less than
12 inches (
304.8
mm) above 
the top.
SECTION FGC 626
GAS
-
FIRED TOILETS
626.1 General.
Gas
-
fired toilets are 
not
approved
for use 
in New York City
.
626.2 Reserved.
SECTION FGC 627
AIR CONDITIONING APPLIANCES
627.1 General.
Gas
-
fired air
-
conditioning appliances shall be tested in accordance with ANSI Z21.40.1
/CGA 2.91
or 
ANSI Z21.40.2
/CGA 2.92
and shall be installed in accordance with the manufacturer’s 
instructions
.
627.2 Independent piping.
Gas piping serving heating appli
ances shall be permitted to also serve cooling appliances 
where such heating and cooling appliances cannot be operated simultaneously (see Section 402).
627.3 Connection of gas engine
-
powered air conditioners.
To protect against the effects of normal vibra
tion in 
service, gas engines shall not be rigidly connected to the gas supply piping. 
Where units are powered by internal 
combustion engines and turbines, installation shall comply with Section 616.1.
627.4 Clearances for indoor installation.
Air
-
condition
ing appliances installed in rooms other than alcoves and 
closets shall be installed with clearances not less than those specified in Section 
308.3
.
Exceptions:
1.
Air
-
conditioning appliances listed for installation at lesser clearances than those specified
in Section 308.3 
shall be permitted to be installed in accordance with such listing and the manufacturer’s instructions
.
Air
-
conditioning appliances installed in rooms other than alcoves and closets shall be permitted to be installed 
with reduced clearanc
es to combustible material, provided that the combustible material is protected in ac-
cordance with Table 308.2.
2.
Air
-
conditioning
appliances listed for installation at greater clearances than those specified in Section 308.3 
shall be installed in accorda
nce with such listing and the manufacturer’s instructions.
627.5 Alcove and closet installation.
Air
-
conditioning appliances installed in spaces such as alcoves and closets shall 
be specifically listed for such installation and installed in accordance with
the terms of such listing. The installation 
clearances for air
-
conditioning appliances in alcoves and closets shall not be reduced by the protection methods de-
scribed in Table 308.2.
627.6 Installation.
Air
-
conditioning appliances shall be installed in ac
cordance with the manufacturer’s instructions. 
Unless the appliance is listed for installation on a combustible surface such as a floor or roof, or unless the surface is 
protected in an approved manner, 
the appliance
shall be installed on a surface of nonc
ombustible construction with 
noncombustible material and surface finish and with no combustible material against the underside thereof.
627.7 Plenums and air ducts.
A plenum supplied as a part of the air
-
conditioning appliance shall be installed in 
accorda
nce with the appliance manufacturer’s instructions. Where a plenum is not supplied with the appliance, such 
plenum shall be installed in accordance with the fabrication and installation instructions provided by the plenum and 
appliance manufacturer. The me
thod of connecting supply and return ducts shall facilitate proper circulation of air.
Where 
the
air
-
conditioning appliance is installed within a space separated from the spaces served by the appliance, 
the air circulated by the appliance shall be conveyed
by ducts that are sealed to the casing of the appliance and that 
separate the circulating air from the combustion and ventilation air.
627.8 Refrigeration coils.
A refrigeration coil shall not be installed in conjunction with a forced
-
air furnace where 
circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the 
external static resistance imposed by the duc
t system and cooling coil at the air throughput necessary for heating or 
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2022 NEW YORK CITY FUEL GAS CODE
cooling, whichever is greater. Furnaces shall not be located upstream from cooling units, unless the cooling unit is 
designed or equipped so as not to develop excessive temperature or
pressure. Refrigeration coils shall be installed in 
parallel with or on the downstream side of central furnaces to avoid condensation in the heating element, unless the 
furnace has been specifically listed for downstream installation. With a parallel flow
arrangement, the dampers or 
other means used to control flow of air shall be sufficiently tight to prevent any circulation of cooled air through the 
furnace.
Means shall be provided for disposal of condensate and to prevent dripping of condensate onto the
heating element.
627.9 Cooling units used with heating boilers.
Boilers, where used in conjunction with refrigeration systems, shall 
be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent 
th
e chilled medium from entering the heating boiler. Where hot water heating boilers are connected to heating coils 
located in air
-
handling units where they might be exposed to refrigerated air circulation, such boiler piping systems 
shall be equipped with f
low control valves or other automatic means to prevent gravity circulation of the boiler water 
during the cooling cycle.
627.10 Switches in electrical supply line.
Means for interrupting the electrical supply to the air
-
conditioning appli-
ance and to its associated cooling tower (if supplied and installed in a location remote from the air conditioner) shall 
be provided within sight of and not over 50 feet (15 240 mm)
from the air conditioner and cooling tower.
SECTION FGC 628
ILLUMINATING APPLIANCES
628.1 General.
Illuminating appliances shall be tested in accordance with ANSI Z21.42 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
628.2 Moun
ting on buildings.
Illuminating appliances designed for wall or ceiling mounting shall be securely at-
tached to substantial structures in such a manner that they are not dependent on the gas piping for support.
628.3 Mounting on posts.
Illuminating applianc
es designed for post mounting shall be securely and rigidly attached 
to a post. Posts shall be rigidly mounted 
in accordance with the requirements of the 
New York City Building Code
. 
Drain openings
shall be provided near the base of posts where there is a 
possibility of water collecting inside them.
628.4 Appliance pressure regulators.
Where an appliance pressure regulator is not supplied with an illuminating 
appliance and the service line is not equipped with a service pressure regulator, an appliance pres
sure regulator shall 
be installed in the line to the illuminating appliance. For multiple installations, one regulator of adequate capacity shall 
be permitted to serve more than one illuminating appliance.
SECTION FGC 629
CERAMIC
KILNS
629.1 General.
Kilns
shall be 
listed and labeled unless otherwise approved
in accordance with 
Section 105.1. Electric 
kilns
shall comply with 
UL 499. The approval of unlisted appliances in accordance with Section 105.1 shall be based 
on an approved engineering evaluation.
SEC
TION FGC 630
INFRARED RADIANT HEATERS
630.1 General.
Infrared radiant heaters shall be tested in accordance with 
ANSI Z83.19
/CSA 2.35
or ANSI 
Z83.20
/CSA 2.34
and shall be installed in accordance with the manufacturer’s 
instructions
.
630.2 Support.
Infrared radiant heaters shall be 
safely and adequately
fixed in 
an approved
position independent of 
gas and electric supply lines. Hangers and brackets shall be of 
noncombustible material.
630.3 Combustion and ventilation air.
Where unvented infrared heaters are installed, natural or mechanical means 
shall provide outdoor ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h (0.38 m
3
/min/kW) of the aggrega
te 
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
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SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
SPECIFIC APPLIANCES
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
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2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
SPECIFIC APPLIANCES
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Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
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623.5.1 Clearances.
A minimum clearance of 24 inches (
609.6
mm) shall be maintained between the cooking top 
and combustible material above th
e hood. The hood shall be at least as wide as the open
-
top broiler unit and be 
centered over the unit.
623.6 Commercial cooking appliance venting.
Commercial cooking appliances, other than those exempted by Sec-
tion 501.8, shall be vented by connecting the 
appliance to a vent or chimney in accordance with this code and the 
appliance manufacturer’s instructions or the appliance shall be vented in accordance with Section 505.1.1.
623.7 Domestic ventilation.
When a hood is provided for a domestic cooking applia
nce, the exhaust and make
-
up air 
systems shall be properly engineered and designed in accordance with Chapter 5 of this code and the 
New York City 
Mechanical Code
.
Household cooking appliances shall have a vertical clearance above the cooking top of not le
ss 
than 30 inches (760 mm) to combustible material and metal cabinets. A minimum clearance of 24 inches (
609.6
mm)
, 
measured to the underside of the above cabinet or combustible material,
is permitted where one of the following is 
installed:
1.
The undersi
de of the combustible material or metal cabinet above the cooking top is protected with not less than 
1
/
4
-
inch (
6.4
mm) insulating millboard covered with sheet metal not less than 0.0122 inch (0.3 mm) thick.
2.
A metal ventilating hood constructed of sheet metal not less than 0.0122 inch (0.3 mm) thick is installed above 
the cooking top with a clearance of not less tha
n 
1
/
4
inch (6.4 mm) between the hood and the underside of the 
combustible material or metal cabinet. The hood shall have a width not less than the width of the appliance and 
shall be centered over the appliance.
3.
A listed cooking appliance or microwave o
ven is installed over a listed cooking appliance and in compliance 
with the terms of the manufacturer’s installation instructions for the upper appliance.
SECTION FGC 624
WATER HEATERS
624.1 General.
Water heaters shall be tested in accordance with 
ANSI Z21.10.1
/CSA 4.1
and ANSI Z21.10.3
/CSA 
4.3
and shall be installed in accordance with the manufacturer’s 
instructions
. Water heaters utilizing fuels other than 
fuel gas shall be regulated by the 
New Yor
k City Mechanical Code
. Approval for water heaters 350,000 Btu/h input 
(
102.6
kW) and above shall be obtained from the New York City Department of Environmental Protection.
624.1.1 Installation requirements.
The requirements for water heaters relative to s
izing, relief valves, drain pans 
and scald protection shall be in accordance with the 
New York City
Plumbing Code
and the following:
1.
No person shall install or maintain in any dwelling unit a gas fuel
-
fired water heater unless the heater obtains 
combust
ion air directly from the outside of the building.
2.
No person shall install or maintain a gas
-
fueled water heater in a room occupied for sleeping purposes, or 
cause or permit to be occupied for sleeping purposes any room in which a gas
-
fueled heater is i
nstalled.
3.
Each heater shall be connected to a flue or outlet pipe.
624.2 Water heaters utilized for space heating.
Water heaters utilized both to supply potable hot water and provide 
hot water for space
-
heating applications shall be listed and labeled f
or such applications by the manufacturer, and shall 
be 
built in accordance with Section IV of the ASME 
Boiler and Pressure Vessel Code
with an “H” code stamp. They 
shall be
installed in accordance with the manufacturer’s 
instructions
, the ASME 
Boiler and Pressure Vessel Code
and 
the 
New York City
Plumbing Code
.
SECTION FGC 625
REFRIGERATORS
625.1 General.
Refrigerators shall be tested in accordance with ANSI Z21.19
/CSA 1.4
a
nd shall be installed in ac-
cordance with the manufacturer’s 
instructions
.
Refrigerators shall be provided with adequate clearances for ventilation at the top and back, and shall be installed 
in accordance with the manufacturer’s instructions. If such instr
uctions are not available, 
not less than
2 inches (
50.8
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2022 NEW YORK CITY FUEL GAS CODE
6
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11
mm) shall be provided between the back of the refrigerator and the wall and 
not less than
12 inches (
304.8
mm) above 
the top.
SECTION FGC 626
GAS
-
FIRED TOILETS
626.1 General.
Gas
-
fired toilets are 
not
approved
for use 
in New York City
.
626.2 Reserved.
SECTION FGC 627
AIR CONDITIONING APPLIANCES
627.1 General.
Gas
-
fired air
-
conditioning appliances shall be tested in accordance with ANSI Z21.40.1
/CGA 2.91
or 
ANSI Z21.40.2
/CGA 2.92
and shall be installed in accordance with the manufacturer’s 
instructions
.
627.2 Independent piping.
Gas piping serving heating appli
ances shall be permitted to also serve cooling appliances 
where such heating and cooling appliances cannot be operated simultaneously (see Section 402).
627.3 Connection of gas engine
-
powered air conditioners.
To protect against the effects of normal vibra
tion in 
service, gas engines shall not be rigidly connected to the gas supply piping. 
Where units are powered by internal 
combustion engines and turbines, installation shall comply with Section 616.1.
627.4 Clearances for indoor installation.
Air
-
condition
ing appliances installed in rooms other than alcoves and 
closets shall be installed with clearances not less than those specified in Section 
308.3
.
Exceptions:
1.
Air
-
conditioning appliances listed for installation at lesser clearances than those specified
in Section 308.3 
shall be permitted to be installed in accordance with such listing and the manufacturer’s instructions
.
Air
-
conditioning appliances installed in rooms other than alcoves and closets shall be permitted to be installed 
with reduced clearanc
es to combustible material, provided that the combustible material is protected in ac-
cordance with Table 308.2.
2.
Air
-
conditioning
appliances listed for installation at greater clearances than those specified in Section 308.3 
shall be installed in accorda
nce with such listing and the manufacturer’s instructions.
627.5 Alcove and closet installation.
Air
-
conditioning appliances installed in spaces such as alcoves and closets shall 
be specifically listed for such installation and installed in accordance with
the terms of such listing. The installation 
clearances for air
-
conditioning appliances in alcoves and closets shall not be reduced by the protection methods de-
scribed in Table 308.2.
627.6 Installation.
Air
-
conditioning appliances shall be installed in ac
cordance with the manufacturer’s instructions. 
Unless the appliance is listed for installation on a combustible surface such as a floor or roof, or unless the surface is 
protected in an approved manner, 
the appliance
shall be installed on a surface of nonc
ombustible construction with 
noncombustible material and surface finish and with no combustible material against the underside thereof.
627.7 Plenums and air ducts.
A plenum supplied as a part of the air
-
conditioning appliance shall be installed in 
accorda
nce with the appliance manufacturer’s instructions. Where a plenum is not supplied with the appliance, such 
plenum shall be installed in accordance with the fabrication and installation instructions provided by the plenum and 
appliance manufacturer. The me
thod of connecting supply and return ducts shall facilitate proper circulation of air.
Where 
the
air
-
conditioning appliance is installed within a space separated from the spaces served by the appliance, 
the air circulated by the appliance shall be conveyed
by ducts that are sealed to the casing of the appliance and that 
separate the circulating air from the combustion and ventilation air.
627.8 Refrigeration coils.
A refrigeration coil shall not be installed in conjunction with a forced
-
air furnace where 
circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the 
external static resistance imposed by the duc
t system and cooling coil at the air throughput necessary for heating or 
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2022 NEW YORK CITY FUEL GAS CODE
cooling, whichever is greater. Furnaces shall not be located upstream from cooling units, unless the cooling unit is 
designed or equipped so as not to develop excessive temperature or
pressure. Refrigeration coils shall be installed in 
parallel with or on the downstream side of central furnaces to avoid condensation in the heating element, unless the 
furnace has been specifically listed for downstream installation. With a parallel flow
arrangement, the dampers or 
other means used to control flow of air shall be sufficiently tight to prevent any circulation of cooled air through the 
furnace.
Means shall be provided for disposal of condensate and to prevent dripping of condensate onto the
heating element.
627.9 Cooling units used with heating boilers.
Boilers, where used in conjunction with refrigeration systems, shall 
be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent 
th
e chilled medium from entering the heating boiler. Where hot water heating boilers are connected to heating coils 
located in air
-
handling units where they might be exposed to refrigerated air circulation, such boiler piping systems 
shall be equipped with f
low control valves or other automatic means to prevent gravity circulation of the boiler water 
during the cooling cycle.
627.10 Switches in electrical supply line.
Means for interrupting the electrical supply to the air
-
conditioning appli-
ance and to its associated cooling tower (if supplied and installed in a location remote from the air conditioner) shall 
be provided within sight of and not over 50 feet (15 240 mm)
from the air conditioner and cooling tower.
SECTION FGC 628
ILLUMINATING APPLIANCES
628.1 General.
Illuminating appliances shall be tested in accordance with ANSI Z21.42 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
628.2 Moun
ting on buildings.
Illuminating appliances designed for wall or ceiling mounting shall be securely at-
tached to substantial structures in such a manner that they are not dependent on the gas piping for support.
628.3 Mounting on posts.
Illuminating applianc
es designed for post mounting shall be securely and rigidly attached 
to a post. Posts shall be rigidly mounted 
in accordance with the requirements of the 
New York City Building Code
. 
Drain openings
shall be provided near the base of posts where there is a 
possibility of water collecting inside them.
628.4 Appliance pressure regulators.
Where an appliance pressure regulator is not supplied with an illuminating 
appliance and the service line is not equipped with a service pressure regulator, an appliance pres
sure regulator shall 
be installed in the line to the illuminating appliance. For multiple installations, one regulator of adequate capacity shall 
be permitted to serve more than one illuminating appliance.
SECTION FGC 629
CERAMIC
KILNS
629.1 General.
Kilns
shall be 
listed and labeled unless otherwise approved
in accordance with 
Section 105.1. Electric 
kilns
shall comply with 
UL 499. The approval of unlisted appliances in accordance with Section 105.1 shall be based 
on an approved engineering evaluation.
SEC
TION FGC 630
INFRARED RADIANT HEATERS
630.1 General.
Infrared radiant heaters shall be tested in accordance with 
ANSI Z83.19
/CSA 2.35
or ANSI 
Z83.20
/CSA 2.34
and shall be installed in accordance with the manufacturer’s 
instructions
.
630.2 Support.
Infrared radiant heaters shall be 
safely and adequately
fixed in 
an approved
position independent of 
gas and electric supply lines. Hangers and brackets shall be of 
noncombustible material.
630.3 Combustion and ventilation air.
Where unvented infrared heaters are installed, natural or mechanical means 
shall provide outdoor ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h (0.38 m
3
/min/kW) of the aggrega
te 
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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2022 NEW YORK CITY FUEL GAS CODE
6
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3
608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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2022 NEW YORK CITY FUEL GAS CODE
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
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2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
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2022 NEW YORK CITY FUEL GAS CODE
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Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
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623.5.1 Clearances.
A minimum clearance of 24 inches (
609.6
mm) shall be maintained between the cooking top 
and combustible material above th
e hood. The hood shall be at least as wide as the open
-
top broiler unit and be 
centered over the unit.
623.6 Commercial cooking appliance venting.
Commercial cooking appliances, other than those exempted by Sec-
tion 501.8, shall be vented by connecting the 
appliance to a vent or chimney in accordance with this code and the 
appliance manufacturer’s instructions or the appliance shall be vented in accordance with Section 505.1.1.
623.7 Domestic ventilation.
When a hood is provided for a domestic cooking applia
nce, the exhaust and make
-
up air 
systems shall be properly engineered and designed in accordance with Chapter 5 of this code and the 
New York City 
Mechanical Code
.
Household cooking appliances shall have a vertical clearance above the cooking top of not le
ss 
than 30 inches (760 mm) to combustible material and metal cabinets. A minimum clearance of 24 inches (
609.6
mm)
, 
measured to the underside of the above cabinet or combustible material,
is permitted where one of the following is 
installed:
1.
The undersi
de of the combustible material or metal cabinet above the cooking top is protected with not less than 
1
/
4
-
inch (
6.4
mm) insulating millboard covered with sheet metal not less than 0.0122 inch (0.3 mm) thick.
2.
A metal ventilating hood constructed of sheet metal not less than 0.0122 inch (0.3 mm) thick is installed above 
the cooking top with a clearance of not less tha
n 
1
/
4
inch (6.4 mm) between the hood and the underside of the 
combustible material or metal cabinet. The hood shall have a width not less than the width of the appliance and 
shall be centered over the appliance.
3.
A listed cooking appliance or microwave o
ven is installed over a listed cooking appliance and in compliance 
with the terms of the manufacturer’s installation instructions for the upper appliance.
SECTION FGC 624
WATER HEATERS
624.1 General.
Water heaters shall be tested in accordance with 
ANSI Z21.10.1
/CSA 4.1
and ANSI Z21.10.3
/CSA 
4.3
and shall be installed in accordance with the manufacturer’s 
instructions
. Water heaters utilizing fuels other than 
fuel gas shall be regulated by the 
New Yor
k City Mechanical Code
. Approval for water heaters 350,000 Btu/h input 
(
102.6
kW) and above shall be obtained from the New York City Department of Environmental Protection.
624.1.1 Installation requirements.
The requirements for water heaters relative to s
izing, relief valves, drain pans 
and scald protection shall be in accordance with the 
New York City
Plumbing Code
and the following:
1.
No person shall install or maintain in any dwelling unit a gas fuel
-
fired water heater unless the heater obtains 
combust
ion air directly from the outside of the building.
2.
No person shall install or maintain a gas
-
fueled water heater in a room occupied for sleeping purposes, or 
cause or permit to be occupied for sleeping purposes any room in which a gas
-
fueled heater is i
nstalled.
3.
Each heater shall be connected to a flue or outlet pipe.
624.2 Water heaters utilized for space heating.
Water heaters utilized both to supply potable hot water and provide 
hot water for space
-
heating applications shall be listed and labeled f
or such applications by the manufacturer, and shall 
be 
built in accordance with Section IV of the ASME 
Boiler and Pressure Vessel Code
with an “H” code stamp. They 
shall be
installed in accordance with the manufacturer’s 
instructions
, the ASME 
Boiler and Pressure Vessel Code
and 
the 
New York City
Plumbing Code
.
SECTION FGC 625
REFRIGERATORS
625.1 General.
Refrigerators shall be tested in accordance with ANSI Z21.19
/CSA 1.4
a
nd shall be installed in ac-
cordance with the manufacturer’s 
instructions
.
Refrigerators shall be provided with adequate clearances for ventilation at the top and back, and shall be installed 
in accordance with the manufacturer’s instructions. If such instr
uctions are not available, 
not less than
2 inches (
50.8
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2022 NEW YORK CITY FUEL GAS CODE
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mm) shall be provided between the back of the refrigerator and the wall and 
not less than
12 inches (
304.8
mm) above 
the top.
SECTION FGC 626
GAS
-
FIRED TOILETS
626.1 General.
Gas
-
fired toilets are 
not
approved
for use 
in New York City
.
626.2 Reserved.
SECTION FGC 627
AIR CONDITIONING APPLIANCES
627.1 General.
Gas
-
fired air
-
conditioning appliances shall be tested in accordance with ANSI Z21.40.1
/CGA 2.91
or 
ANSI Z21.40.2
/CGA 2.92
and shall be installed in accordance with the manufacturer’s 
instructions
.
627.2 Independent piping.
Gas piping serving heating appli
ances shall be permitted to also serve cooling appliances 
where such heating and cooling appliances cannot be operated simultaneously (see Section 402).
627.3 Connection of gas engine
-
powered air conditioners.
To protect against the effects of normal vibra
tion in 
service, gas engines shall not be rigidly connected to the gas supply piping. 
Where units are powered by internal 
combustion engines and turbines, installation shall comply with Section 616.1.
627.4 Clearances for indoor installation.
Air
-
condition
ing appliances installed in rooms other than alcoves and 
closets shall be installed with clearances not less than those specified in Section 
308.3
.
Exceptions:
1.
Air
-
conditioning appliances listed for installation at lesser clearances than those specified
in Section 308.3 
shall be permitted to be installed in accordance with such listing and the manufacturer’s instructions
.
Air
-
conditioning appliances installed in rooms other than alcoves and closets shall be permitted to be installed 
with reduced clearanc
es to combustible material, provided that the combustible material is protected in ac-
cordance with Table 308.2.
2.
Air
-
conditioning
appliances listed for installation at greater clearances than those specified in Section 308.3 
shall be installed in accorda
nce with such listing and the manufacturer’s instructions.
627.5 Alcove and closet installation.
Air
-
conditioning appliances installed in spaces such as alcoves and closets shall 
be specifically listed for such installation and installed in accordance with
the terms of such listing. The installation 
clearances for air
-
conditioning appliances in alcoves and closets shall not be reduced by the protection methods de-
scribed in Table 308.2.
627.6 Installation.
Air
-
conditioning appliances shall be installed in ac
cordance with the manufacturer’s instructions. 
Unless the appliance is listed for installation on a combustible surface such as a floor or roof, or unless the surface is 
protected in an approved manner, 
the appliance
shall be installed on a surface of nonc
ombustible construction with 
noncombustible material and surface finish and with no combustible material against the underside thereof.
627.7 Plenums and air ducts.
A plenum supplied as a part of the air
-
conditioning appliance shall be installed in 
accorda
nce with the appliance manufacturer’s instructions. Where a plenum is not supplied with the appliance, such 
plenum shall be installed in accordance with the fabrication and installation instructions provided by the plenum and 
appliance manufacturer. The me
thod of connecting supply and return ducts shall facilitate proper circulation of air.
Where 
the
air
-
conditioning appliance is installed within a space separated from the spaces served by the appliance, 
the air circulated by the appliance shall be conveyed
by ducts that are sealed to the casing of the appliance and that 
separate the circulating air from the combustion and ventilation air.
627.8 Refrigeration coils.
A refrigeration coil shall not be installed in conjunction with a forced
-
air furnace where 
circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the 
external static resistance imposed by the duc
t system and cooling coil at the air throughput necessary for heating or 
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cooling, whichever is greater. Furnaces shall not be located upstream from cooling units, unless the cooling unit is 
designed or equipped so as not to develop excessive temperature or
pressure. Refrigeration coils shall be installed in 
parallel with or on the downstream side of central furnaces to avoid condensation in the heating element, unless the 
furnace has been specifically listed for downstream installation. With a parallel flow
arrangement, the dampers or 
other means used to control flow of air shall be sufficiently tight to prevent any circulation of cooled air through the 
furnace.
Means shall be provided for disposal of condensate and to prevent dripping of condensate onto the
heating element.
627.9 Cooling units used with heating boilers.
Boilers, where used in conjunction with refrigeration systems, shall 
be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent 
th
e chilled medium from entering the heating boiler. Where hot water heating boilers are connected to heating coils 
located in air
-
handling units where they might be exposed to refrigerated air circulation, such boiler piping systems 
shall be equipped with f
low control valves or other automatic means to prevent gravity circulation of the boiler water 
during the cooling cycle.
627.10 Switches in electrical supply line.
Means for interrupting the electrical supply to the air
-
conditioning appli-
ance and to its associated cooling tower (if supplied and installed in a location remote from the air conditioner) shall 
be provided within sight of and not over 50 feet (15 240 mm)
from the air conditioner and cooling tower.
SECTION FGC 628
ILLUMINATING APPLIANCES
628.1 General.
Illuminating appliances shall be tested in accordance with ANSI Z21.42 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
628.2 Moun
ting on buildings.
Illuminating appliances designed for wall or ceiling mounting shall be securely at-
tached to substantial structures in such a manner that they are not dependent on the gas piping for support.
628.3 Mounting on posts.
Illuminating applianc
es designed for post mounting shall be securely and rigidly attached 
to a post. Posts shall be rigidly mounted 
in accordance with the requirements of the 
New York City Building Code
. 
Drain openings
shall be provided near the base of posts where there is a 
possibility of water collecting inside them.
628.4 Appliance pressure regulators.
Where an appliance pressure regulator is not supplied with an illuminating 
appliance and the service line is not equipped with a service pressure regulator, an appliance pres
sure regulator shall 
be installed in the line to the illuminating appliance. For multiple installations, one regulator of adequate capacity shall 
be permitted to serve more than one illuminating appliance.
SECTION FGC 629
CERAMIC
KILNS
629.1 General.
Kilns
shall be 
listed and labeled unless otherwise approved
in accordance with 
Section 105.1. Electric 
kilns
shall comply with 
UL 499. The approval of unlisted appliances in accordance with Section 105.1 shall be based 
on an approved engineering evaluation.
SEC
TION FGC 630
INFRARED RADIANT HEATERS
630.1 General.
Infrared radiant heaters shall be tested in accordance with 
ANSI Z83.19
/CSA 2.35
or ANSI 
Z83.20
/CSA 2.34
and shall be installed in accordance with the manufacturer’s 
instructions
.
630.2 Support.
Infrared radiant heaters shall be 
safely and adequately
fixed in 
an approved
position independent of 
gas and electric supply lines. Hangers and brackets shall be of 
noncombustible material.
630.3 Combustion and ventilation air.
Where unvented infrared heaters are installed, natural or mechanical means 
shall provide outdoor ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h (0.38 m
3
/min/kW) of the aggrega
te 
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input rating of all such heaters installed in the space. Exhaust openings for removing flue products shall be above the 
level of the heaters.
630.4 Installation in commercial garages and 
air
-
craft
hangars.
Overhead infrared heaters installed in garages 
for 
more than three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 
305.11.
SECTION FGC 631
BOILERS
631.1 Standards.
Boilers shall be listed in accordance with the requirements of ANSI Z21.13
/CSA 4.9
o
r UL 795. If 
applicable, the boiler shall be designed and constructed in accordance with the requirements of ASME CSD
-
1 and as 
applicable, the ASME 
Boiler and Pressure Vessel Code
, Sections I, II, IV, V, 
VI and
IX 
and
NFPA 
85
. Low
-
pressure 
boilers shall co
nform to the requirements of 12 NYCRR Part 4 and high
-
pressure boilers shall conform to the require-
ments of 12 NYCRR Part 14.
631.2 Installation.
In addition to the requirements of this code, the installation of boilers shall be in accordance with 
the manu
facturer’s instructions and the 
New York City
Mechanical Code
. Operating instructions of a permanent type 
shall be attached to the boiler. 
Spill switches must be installed on all flue gas draft openings and interlocked with all 
vented 
appliances.
Boilers shall have all controls set, adjusted and tested by the installer. A complete control diagram 
together with complete boiler operating instructions shall be furnished by the installer. The manufacturer’s rating data 
and the nameplate sha
ll be attached to the boiler.
631.3 Clearance to combustible materials.
Clearances to combustible materials shall be in accordance with Section 
308.4.
SECTION FGC 632
EQUIPMENT INSTALLED IN EXISTING UNLISTED
BOILERS
632.1 General.
Gas equipment installed i
n existing unlisted boilers shall comply with Section 631.1 and shall be 
installed in accordance with the manufacturer’s instructions and the 
New York City
Mechanical Code
.
SECTION FGC 633
STATIONARY FUEL CELL POWER SYSTEMS
633.1 General.
Stationary 
fuel c
ell
power systems having a power output not exceeding 
10
MW shall be tested in 
accordance with ANSI/CSA America FC 1 and shall be installed in accordance with the manufacturer’s 
instructions
, 
NFPA 853, the 
New York City Building Code
, the 
New York City Fir
e Code
and 
the 
New York City Electrical Code
. 
Indoor stationary fuel cell power systems used in hydrogen generating systems shall be located in accordance with the 
requirements of Section 706 of this code.
SECTION FGC 634
CHIMNEY DAMPER OPENING AREA
634.1 
Free opening area of chimney dampers.
Where an unlisted decorative appliance for installation in a vented 
fireplace is installed, the fireplace damper shall have a permanent free opening equal to or greater than specified in 
Table 634.1.
TABLE 634.1
FREE OPENING AREA OF CHIMNEY DAMPER FOR VENTING FLUE GASES 
FROM 
UNLISTED DECORATIVE APPLIANCES FOR INSTALLATION IN VENTED FIREPLACES
CHIMNEY 
HEIGHT
(feet)
MINIMUM PERMANENT FREE OPENING (square inches)
a
8
13
20
29
39
51
64
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2022 NEW YORK CITY FUEL GAS CODE
Appliance input rating 
(Btu per hour)
6
7,800
14,000
23,200
34,000
46,400
62,400
80,000
8
8,400
15,200
25,200
37,000
50,400
68,000
86,000
10
9,000
16,800
27,600
40,400
55,800
74,400
96,400
15
9,800
18,200
30,200
44,600
62,400
84,000
108,800
20
10,600
20,200
32,600
50,400
68,400
94,000
122,200
30
11,200
21,600
36,600
55,200
76,800
105,800
138,600
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 square inch = 645.
16 m
2
, 1 British thermal unit per hour = 0.2931 W.
a.
The first six minimum permanent free 
openings (8 to 51 square inches) correspond approximately to the cross
-
sectional areas of chimneys having 
diameters of 3 through 8 inches, respectively. The 64
-
square
-
inch opening corresponds to the cross
-
sectional area of standard 8
-
inch by 8
-
inch 
chimney
tile.
SECTION FGC 635
GASEOUS HYDROGEN SYSTEMS
635.1 Installation.
The installation of gaseous hydrogen systems shall be in accordance with the applicable require-
ments of the 
New York City
Fire Code
, the 
New York City
Building Code
, and Chapter 7 of this 
code
.
SECTION FGC 636
OUTDOOR DECORATIVE APPLIANCES
636.1 General.
Permanently fixed
-
in
-
place outdoor decorative appliances shall be tested in accordance with ANSI 
Z21.97
/CSA 2.41
and shall be installed in accordance with the manufacturer’s instructions.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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2022 NEW YORK CITY FUEL GAS CODE
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608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
SPECIFIC APPLIANCES
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SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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2022 NEW YORK CITY FUEL GAS CODE
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
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2022 NEW YORK CITY FUEL GAS CODE
2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
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2022 NEW YORK CITY FUEL GAS CODE
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9
Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
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2022 NEW YORK CITY FUEL GAS CODE
623.5.1 Clearances.
A minimum clearance of 24 inches (
609.6
mm) shall be maintained between the cooking top 
and combustible material above th
e hood. The hood shall be at least as wide as the open
-
top broiler unit and be 
centered over the unit.
623.6 Commercial cooking appliance venting.
Commercial cooking appliances, other than those exempted by Sec-
tion 501.8, shall be vented by connecting the 
appliance to a vent or chimney in accordance with this code and the 
appliance manufacturer’s instructions or the appliance shall be vented in accordance with Section 505.1.1.
623.7 Domestic ventilation.
When a hood is provided for a domestic cooking applia
nce, the exhaust and make
-
up air 
systems shall be properly engineered and designed in accordance with Chapter 5 of this code and the 
New York City 
Mechanical Code
.
Household cooking appliances shall have a vertical clearance above the cooking top of not le
ss 
than 30 inches (760 mm) to combustible material and metal cabinets. A minimum clearance of 24 inches (
609.6
mm)
, 
measured to the underside of the above cabinet or combustible material,
is permitted where one of the following is 
installed:
1.
The undersi
de of the combustible material or metal cabinet above the cooking top is protected with not less than 
1
/
4
-
inch (
6.4
mm) insulating millboard covered with sheet metal not less than 0.0122 inch (0.3 mm) thick.
2.
A metal ventilating hood constructed of sheet metal not less than 0.0122 inch (0.3 mm) thick is installed above 
the cooking top with a clearance of not less tha
n 
1
/
4
inch (6.4 mm) between the hood and the underside of the 
combustible material or metal cabinet. The hood shall have a width not less than the width of the appliance and 
shall be centered over the appliance.
3.
A listed cooking appliance or microwave o
ven is installed over a listed cooking appliance and in compliance 
with the terms of the manufacturer’s installation instructions for the upper appliance.
SECTION FGC 624
WATER HEATERS
624.1 General.
Water heaters shall be tested in accordance with 
ANSI Z21.10.1
/CSA 4.1
and ANSI Z21.10.3
/CSA 
4.3
and shall be installed in accordance with the manufacturer’s 
instructions
. Water heaters utilizing fuels other than 
fuel gas shall be regulated by the 
New Yor
k City Mechanical Code
. Approval for water heaters 350,000 Btu/h input 
(
102.6
kW) and above shall be obtained from the New York City Department of Environmental Protection.
624.1.1 Installation requirements.
The requirements for water heaters relative to s
izing, relief valves, drain pans 
and scald protection shall be in accordance with the 
New York City
Plumbing Code
and the following:
1.
No person shall install or maintain in any dwelling unit a gas fuel
-
fired water heater unless the heater obtains 
combust
ion air directly from the outside of the building.
2.
No person shall install or maintain a gas
-
fueled water heater in a room occupied for sleeping purposes, or 
cause or permit to be occupied for sleeping purposes any room in which a gas
-
fueled heater is i
nstalled.
3.
Each heater shall be connected to a flue or outlet pipe.
624.2 Water heaters utilized for space heating.
Water heaters utilized both to supply potable hot water and provide 
hot water for space
-
heating applications shall be listed and labeled f
or such applications by the manufacturer, and shall 
be 
built in accordance with Section IV of the ASME 
Boiler and Pressure Vessel Code
with an “H” code stamp. They 
shall be
installed in accordance with the manufacturer’s 
instructions
, the ASME 
Boiler and Pressure Vessel Code
and 
the 
New York City
Plumbing Code
.
SECTION FGC 625
REFRIGERATORS
625.1 General.
Refrigerators shall be tested in accordance with ANSI Z21.19
/CSA 1.4
a
nd shall be installed in ac-
cordance with the manufacturer’s 
instructions
.
Refrigerators shall be provided with adequate clearances for ventilation at the top and back, and shall be installed 
in accordance with the manufacturer’s instructions. If such instr
uctions are not available, 
not less than
2 inches (
50.8
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2022 NEW YORK CITY FUEL GAS CODE
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mm) shall be provided between the back of the refrigerator and the wall and 
not less than
12 inches (
304.8
mm) above 
the top.
SECTION FGC 626
GAS
-
FIRED TOILETS
626.1 General.
Gas
-
fired toilets are 
not
approved
for use 
in New York City
.
626.2 Reserved.
SECTION FGC 627
AIR CONDITIONING APPLIANCES
627.1 General.
Gas
-
fired air
-
conditioning appliances shall be tested in accordance with ANSI Z21.40.1
/CGA 2.91
or 
ANSI Z21.40.2
/CGA 2.92
and shall be installed in accordance with the manufacturer’s 
instructions
.
627.2 Independent piping.
Gas piping serving heating appli
ances shall be permitted to also serve cooling appliances 
where such heating and cooling appliances cannot be operated simultaneously (see Section 402).
627.3 Connection of gas engine
-
powered air conditioners.
To protect against the effects of normal vibra
tion in 
service, gas engines shall not be rigidly connected to the gas supply piping. 
Where units are powered by internal 
combustion engines and turbines, installation shall comply with Section 616.1.
627.4 Clearances for indoor installation.
Air
-
condition
ing appliances installed in rooms other than alcoves and 
closets shall be installed with clearances not less than those specified in Section 
308.3
.
Exceptions:
1.
Air
-
conditioning appliances listed for installation at lesser clearances than those specified
in Section 308.3 
shall be permitted to be installed in accordance with such listing and the manufacturer’s instructions
.
Air
-
conditioning appliances installed in rooms other than alcoves and closets shall be permitted to be installed 
with reduced clearanc
es to combustible material, provided that the combustible material is protected in ac-
cordance with Table 308.2.
2.
Air
-
conditioning
appliances listed for installation at greater clearances than those specified in Section 308.3 
shall be installed in accorda
nce with such listing and the manufacturer’s instructions.
627.5 Alcove and closet installation.
Air
-
conditioning appliances installed in spaces such as alcoves and closets shall 
be specifically listed for such installation and installed in accordance with
the terms of such listing. The installation 
clearances for air
-
conditioning appliances in alcoves and closets shall not be reduced by the protection methods de-
scribed in Table 308.2.
627.6 Installation.
Air
-
conditioning appliances shall be installed in ac
cordance with the manufacturer’s instructions. 
Unless the appliance is listed for installation on a combustible surface such as a floor or roof, or unless the surface is 
protected in an approved manner, 
the appliance
shall be installed on a surface of nonc
ombustible construction with 
noncombustible material and surface finish and with no combustible material against the underside thereof.
627.7 Plenums and air ducts.
A plenum supplied as a part of the air
-
conditioning appliance shall be installed in 
accorda
nce with the appliance manufacturer’s instructions. Where a plenum is not supplied with the appliance, such 
plenum shall be installed in accordance with the fabrication and installation instructions provided by the plenum and 
appliance manufacturer. The me
thod of connecting supply and return ducts shall facilitate proper circulation of air.
Where 
the
air
-
conditioning appliance is installed within a space separated from the spaces served by the appliance, 
the air circulated by the appliance shall be conveyed
by ducts that are sealed to the casing of the appliance and that 
separate the circulating air from the combustion and ventilation air.
627.8 Refrigeration coils.
A refrigeration coil shall not be installed in conjunction with a forced
-
air furnace where 
circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the 
external static resistance imposed by the duc
t system and cooling coil at the air throughput necessary for heating or 
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
cooling, whichever is greater. Furnaces shall not be located upstream from cooling units, unless the cooling unit is 
designed or equipped so as not to develop excessive temperature or
pressure. Refrigeration coils shall be installed in 
parallel with or on the downstream side of central furnaces to avoid condensation in the heating element, unless the 
furnace has been specifically listed for downstream installation. With a parallel flow
arrangement, the dampers or 
other means used to control flow of air shall be sufficiently tight to prevent any circulation of cooled air through the 
furnace.
Means shall be provided for disposal of condensate and to prevent dripping of condensate onto the
heating element.
627.9 Cooling units used with heating boilers.
Boilers, where used in conjunction with refrigeration systems, shall 
be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent 
th
e chilled medium from entering the heating boiler. Where hot water heating boilers are connected to heating coils 
located in air
-
handling units where they might be exposed to refrigerated air circulation, such boiler piping systems 
shall be equipped with f
low control valves or other automatic means to prevent gravity circulation of the boiler water 
during the cooling cycle.
627.10 Switches in electrical supply line.
Means for interrupting the electrical supply to the air
-
conditioning appli-
ance and to its associated cooling tower (if supplied and installed in a location remote from the air conditioner) shall 
be provided within sight of and not over 50 feet (15 240 mm)
from the air conditioner and cooling tower.
SECTION FGC 628
ILLUMINATING APPLIANCES
628.1 General.
Illuminating appliances shall be tested in accordance with ANSI Z21.42 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
628.2 Moun
ting on buildings.
Illuminating appliances designed for wall or ceiling mounting shall be securely at-
tached to substantial structures in such a manner that they are not dependent on the gas piping for support.
628.3 Mounting on posts.
Illuminating applianc
es designed for post mounting shall be securely and rigidly attached 
to a post. Posts shall be rigidly mounted 
in accordance with the requirements of the 
New York City Building Code
. 
Drain openings
shall be provided near the base of posts where there is a 
possibility of water collecting inside them.
628.4 Appliance pressure regulators.
Where an appliance pressure regulator is not supplied with an illuminating 
appliance and the service line is not equipped with a service pressure regulator, an appliance pres
sure regulator shall 
be installed in the line to the illuminating appliance. For multiple installations, one regulator of adequate capacity shall 
be permitted to serve more than one illuminating appliance.
SECTION FGC 629
CERAMIC
KILNS
629.1 General.
Kilns
shall be 
listed and labeled unless otherwise approved
in accordance with 
Section 105.1. Electric 
kilns
shall comply with 
UL 499. The approval of unlisted appliances in accordance with Section 105.1 shall be based 
on an approved engineering evaluation.
SEC
TION FGC 630
INFRARED RADIANT HEATERS
630.1 General.
Infrared radiant heaters shall be tested in accordance with 
ANSI Z83.19
/CSA 2.35
or ANSI 
Z83.20
/CSA 2.34
and shall be installed in accordance with the manufacturer’s 
instructions
.
630.2 Support.
Infrared radiant heaters shall be 
safely and adequately
fixed in 
an approved
position independent of 
gas and electric supply lines. Hangers and brackets shall be of 
noncombustible material.
630.3 Combustion and ventilation air.
Where unvented infrared heaters are installed, natural or mechanical means 
shall provide outdoor ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h (0.38 m
3
/min/kW) of the aggrega
te 
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2022 NEW YORK CITY FUEL GAS CODE
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13
input rating of all such heaters installed in the space. Exhaust openings for removing flue products shall be above the 
level of the heaters.
630.4 Installation in commercial garages and 
air
-
craft
hangars.
Overhead infrared heaters installed in garages 
for 
more than three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 
305.11.
SECTION FGC 631
BOILERS
631.1 Standards.
Boilers shall be listed in accordance with the requirements of ANSI Z21.13
/CSA 4.9
o
r UL 795. If 
applicable, the boiler shall be designed and constructed in accordance with the requirements of ASME CSD
-
1 and as 
applicable, the ASME 
Boiler and Pressure Vessel Code
, Sections I, II, IV, V, 
VI and
IX 
and
NFPA 
85
. Low
-
pressure 
boilers shall co
nform to the requirements of 12 NYCRR Part 4 and high
-
pressure boilers shall conform to the require-
ments of 12 NYCRR Part 14.
631.2 Installation.
In addition to the requirements of this code, the installation of boilers shall be in accordance with 
the manu
facturer’s instructions and the 
New York City
Mechanical Code
. Operating instructions of a permanent type 
shall be attached to the boiler. 
Spill switches must be installed on all flue gas draft openings and interlocked with all 
vented 
appliances.
Boilers shall have all controls set, adjusted and tested by the installer. A complete control diagram 
together with complete boiler operating instructions shall be furnished by the installer. The manufacturer’s rating data 
and the nameplate sha
ll be attached to the boiler.
631.3 Clearance to combustible materials.
Clearances to combustible materials shall be in accordance with Section 
308.4.
SECTION FGC 632
EQUIPMENT INSTALLED IN EXISTING UNLISTED
BOILERS
632.1 General.
Gas equipment installed i
n existing unlisted boilers shall comply with Section 631.1 and shall be 
installed in accordance with the manufacturer’s instructions and the 
New York City
Mechanical Code
.
SECTION FGC 633
STATIONARY FUEL CELL POWER SYSTEMS
633.1 General.
Stationary 
fuel c
ell
power systems having a power output not exceeding 
10
MW shall be tested in 
accordance with ANSI/CSA America FC 1 and shall be installed in accordance with the manufacturer’s 
instructions
, 
NFPA 853, the 
New York City Building Code
, the 
New York City Fir
e Code
and 
the 
New York City Electrical Code
. 
Indoor stationary fuel cell power systems used in hydrogen generating systems shall be located in accordance with the 
requirements of Section 706 of this code.
SECTION FGC 634
CHIMNEY DAMPER OPENING AREA
634.1 
Free opening area of chimney dampers.
Where an unlisted decorative appliance for installation in a vented 
fireplace is installed, the fireplace damper shall have a permanent free opening equal to or greater than specified in 
Table 634.1.
TABLE 634.1
FREE OPENING AREA OF CHIMNEY DAMPER FOR VENTING FLUE GASES 
FROM 
UNLISTED DECORATIVE APPLIANCES FOR INSTALLATION IN VENTED FIREPLACES
CHIMNEY 
HEIGHT
(feet)
MINIMUM PERMANENT FREE OPENING (square inches)
a
8
13
20
29
39
51
64
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2022 NEW YORK CITY FUEL GAS CODE
Appliance input rating 
(Btu per hour)
6
7,800
14,000
23,200
34,000
46,400
62,400
80,000
8
8,400
15,200
25,200
37,000
50,400
68,000
86,000
10
9,000
16,800
27,600
40,400
55,800
74,400
96,400
15
9,800
18,200
30,200
44,600
62,400
84,000
108,800
20
10,600
20,200
32,600
50,400
68,400
94,000
122,200
30
11,200
21,600
36,600
55,200
76,800
105,800
138,600
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 square inch = 645.
16 m
2
, 1 British thermal unit per hour = 0.2931 W.
a.
The first six minimum permanent free 
openings (8 to 51 square inches) correspond approximately to the cross
-
sectional areas of chimneys having 
diameters of 3 through 8 inches, respectively. The 64
-
square
-
inch opening corresponds to the cross
-
sectional area of standard 8
-
inch by 8
-
inch 
chimney
tile.
SECTION FGC 635
GASEOUS HYDROGEN SYSTEMS
635.1 Installation.
The installation of gaseous hydrogen systems shall be in accordance with the applicable require-
ments of the 
New York City
Fire Code
, the 
New York City
Building Code
, and Chapter 7 of this 
code
.
SECTION FGC 636
OUTDOOR DECORATIVE APPLIANCES
636.1 General.
Permanently fixed
-
in
-
place outdoor decorative appliances shall be tested in accordance with ANSI 
Z21.97
/CSA 2.41
and shall be installed in accordance with the manufacturer’s instructions.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
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SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
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SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
SPECIFIC APPLIANCES
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
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2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
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Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
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623.5.1 Clearances.
A minimum clearance of 24 inches (
609.6
mm) shall be maintained between the cooking top 
and combustible material above th
e hood. The hood shall be at least as wide as the open
-
top broiler unit and be 
centered over the unit.
623.6 Commercial cooking appliance venting.
Commercial cooking appliances, other than those exempted by Sec-
tion 501.8, shall be vented by connecting the 
appliance to a vent or chimney in accordance with this code and the 
appliance manufacturer’s instructions or the appliance shall be vented in accordance with Section 505.1.1.
623.7 Domestic ventilation.
When a hood is provided for a domestic cooking applia
nce, the exhaust and make
-
up air 
systems shall be properly engineered and designed in accordance with Chapter 5 of this code and the 
New York City 
Mechanical Code
.
Household cooking appliances shall have a vertical clearance above the cooking top of not le
ss 
than 30 inches (760 mm) to combustible material and metal cabinets. A minimum clearance of 24 inches (
609.6
mm)
, 
measured to the underside of the above cabinet or combustible material,
is permitted where one of the following is 
installed:
1.
The undersi
de of the combustible material or metal cabinet above the cooking top is protected with not less than 
1
/
4
-
inch (
6.4
mm) insulating millboard covered with sheet metal not less than 0.0122 inch (0.3 mm) thick.
2.
A metal ventilating hood constructed of sheet metal not less than 0.0122 inch (0.3 mm) thick is installed above 
the cooking top with a clearance of not less tha
n 
1
/
4
inch (6.4 mm) between the hood and the underside of the 
combustible material or metal cabinet. The hood shall have a width not less than the width of the appliance and 
shall be centered over the appliance.
3.
A listed cooking appliance or microwave o
ven is installed over a listed cooking appliance and in compliance 
with the terms of the manufacturer’s installation instructions for the upper appliance.
SECTION FGC 624
WATER HEATERS
624.1 General.
Water heaters shall be tested in accordance with 
ANSI Z21.10.1
/CSA 4.1
and ANSI Z21.10.3
/CSA 
4.3
and shall be installed in accordance with the manufacturer’s 
instructions
. Water heaters utilizing fuels other than 
fuel gas shall be regulated by the 
New Yor
k City Mechanical Code
. Approval for water heaters 350,000 Btu/h input 
(
102.6
kW) and above shall be obtained from the New York City Department of Environmental Protection.
624.1.1 Installation requirements.
The requirements for water heaters relative to s
izing, relief valves, drain pans 
and scald protection shall be in accordance with the 
New York City
Plumbing Code
and the following:
1.
No person shall install or maintain in any dwelling unit a gas fuel
-
fired water heater unless the heater obtains 
combust
ion air directly from the outside of the building.
2.
No person shall install or maintain a gas
-
fueled water heater in a room occupied for sleeping purposes, or 
cause or permit to be occupied for sleeping purposes any room in which a gas
-
fueled heater is i
nstalled.
3.
Each heater shall be connected to a flue or outlet pipe.
624.2 Water heaters utilized for space heating.
Water heaters utilized both to supply potable hot water and provide 
hot water for space
-
heating applications shall be listed and labeled f
or such applications by the manufacturer, and shall 
be 
built in accordance with Section IV of the ASME 
Boiler and Pressure Vessel Code
with an “H” code stamp. They 
shall be
installed in accordance with the manufacturer’s 
instructions
, the ASME 
Boiler and Pressure Vessel Code
and 
the 
New York City
Plumbing Code
.
SECTION FGC 625
REFRIGERATORS
625.1 General.
Refrigerators shall be tested in accordance with ANSI Z21.19
/CSA 1.4
a
nd shall be installed in ac-
cordance with the manufacturer’s 
instructions
.
Refrigerators shall be provided with adequate clearances for ventilation at the top and back, and shall be installed 
in accordance with the manufacturer’s instructions. If such instr
uctions are not available, 
not less than
2 inches (
50.8
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2022 NEW YORK CITY FUEL GAS CODE
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11
mm) shall be provided between the back of the refrigerator and the wall and 
not less than
12 inches (
304.8
mm) above 
the top.
SECTION FGC 626
GAS
-
FIRED TOILETS
626.1 General.
Gas
-
fired toilets are 
not
approved
for use 
in New York City
.
626.2 Reserved.
SECTION FGC 627
AIR CONDITIONING APPLIANCES
627.1 General.
Gas
-
fired air
-
conditioning appliances shall be tested in accordance with ANSI Z21.40.1
/CGA 2.91
or 
ANSI Z21.40.2
/CGA 2.92
and shall be installed in accordance with the manufacturer’s 
instructions
.
627.2 Independent piping.
Gas piping serving heating appli
ances shall be permitted to also serve cooling appliances 
where such heating and cooling appliances cannot be operated simultaneously (see Section 402).
627.3 Connection of gas engine
-
powered air conditioners.
To protect against the effects of normal vibra
tion in 
service, gas engines shall not be rigidly connected to the gas supply piping. 
Where units are powered by internal 
combustion engines and turbines, installation shall comply with Section 616.1.
627.4 Clearances for indoor installation.
Air
-
condition
ing appliances installed in rooms other than alcoves and 
closets shall be installed with clearances not less than those specified in Section 
308.3
.
Exceptions:
1.
Air
-
conditioning appliances listed for installation at lesser clearances than those specified
in Section 308.3 
shall be permitted to be installed in accordance with such listing and the manufacturer’s instructions
.
Air
-
conditioning appliances installed in rooms other than alcoves and closets shall be permitted to be installed 
with reduced clearanc
es to combustible material, provided that the combustible material is protected in ac-
cordance with Table 308.2.
2.
Air
-
conditioning
appliances listed for installation at greater clearances than those specified in Section 308.3 
shall be installed in accorda
nce with such listing and the manufacturer’s instructions.
627.5 Alcove and closet installation.
Air
-
conditioning appliances installed in spaces such as alcoves and closets shall 
be specifically listed for such installation and installed in accordance with
the terms of such listing. The installation 
clearances for air
-
conditioning appliances in alcoves and closets shall not be reduced by the protection methods de-
scribed in Table 308.2.
627.6 Installation.
Air
-
conditioning appliances shall be installed in ac
cordance with the manufacturer’s instructions. 
Unless the appliance is listed for installation on a combustible surface such as a floor or roof, or unless the surface is 
protected in an approved manner, 
the appliance
shall be installed on a surface of nonc
ombustible construction with 
noncombustible material and surface finish and with no combustible material against the underside thereof.
627.7 Plenums and air ducts.
A plenum supplied as a part of the air
-
conditioning appliance shall be installed in 
accorda
nce with the appliance manufacturer’s instructions. Where a plenum is not supplied with the appliance, such 
plenum shall be installed in accordance with the fabrication and installation instructions provided by the plenum and 
appliance manufacturer. The me
thod of connecting supply and return ducts shall facilitate proper circulation of air.
Where 
the
air
-
conditioning appliance is installed within a space separated from the spaces served by the appliance, 
the air circulated by the appliance shall be conveyed
by ducts that are sealed to the casing of the appliance and that 
separate the circulating air from the combustion and ventilation air.
627.8 Refrigeration coils.
A refrigeration coil shall not be installed in conjunction with a forced
-
air furnace where 
circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the 
external static resistance imposed by the duc
t system and cooling coil at the air throughput necessary for heating or 
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2022 NEW YORK CITY FUEL GAS CODE
cooling, whichever is greater. Furnaces shall not be located upstream from cooling units, unless the cooling unit is 
designed or equipped so as not to develop excessive temperature or
pressure. Refrigeration coils shall be installed in 
parallel with or on the downstream side of central furnaces to avoid condensation in the heating element, unless the 
furnace has been specifically listed for downstream installation. With a parallel flow
arrangement, the dampers or 
other means used to control flow of air shall be sufficiently tight to prevent any circulation of cooled air through the 
furnace.
Means shall be provided for disposal of condensate and to prevent dripping of condensate onto the
heating element.
627.9 Cooling units used with heating boilers.
Boilers, where used in conjunction with refrigeration systems, shall 
be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent 
th
e chilled medium from entering the heating boiler. Where hot water heating boilers are connected to heating coils 
located in air
-
handling units where they might be exposed to refrigerated air circulation, such boiler piping systems 
shall be equipped with f
low control valves or other automatic means to prevent gravity circulation of the boiler water 
during the cooling cycle.
627.10 Switches in electrical supply line.
Means for interrupting the electrical supply to the air
-
conditioning appli-
ance and to its associated cooling tower (if supplied and installed in a location remote from the air conditioner) shall 
be provided within sight of and not over 50 feet (15 240 mm)
from the air conditioner and cooling tower.
SECTION FGC 628
ILLUMINATING APPLIANCES
628.1 General.
Illuminating appliances shall be tested in accordance with ANSI Z21.42 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
628.2 Moun
ting on buildings.
Illuminating appliances designed for wall or ceiling mounting shall be securely at-
tached to substantial structures in such a manner that they are not dependent on the gas piping for support.
628.3 Mounting on posts.
Illuminating applianc
es designed for post mounting shall be securely and rigidly attached 
to a post. Posts shall be rigidly mounted 
in accordance with the requirements of the 
New York City Building Code
. 
Drain openings
shall be provided near the base of posts where there is a 
possibility of water collecting inside them.
628.4 Appliance pressure regulators.
Where an appliance pressure regulator is not supplied with an illuminating 
appliance and the service line is not equipped with a service pressure regulator, an appliance pres
sure regulator shall 
be installed in the line to the illuminating appliance. For multiple installations, one regulator of adequate capacity shall 
be permitted to serve more than one illuminating appliance.
SECTION FGC 629
CERAMIC
KILNS
629.1 General.
Kilns
shall be 
listed and labeled unless otherwise approved
in accordance with 
Section 105.1. Electric 
kilns
shall comply with 
UL 499. The approval of unlisted appliances in accordance with Section 105.1 shall be based 
on an approved engineering evaluation.
SEC
TION FGC 630
INFRARED RADIANT HEATERS
630.1 General.
Infrared radiant heaters shall be tested in accordance with 
ANSI Z83.19
/CSA 2.35
or ANSI 
Z83.20
/CSA 2.34
and shall be installed in accordance with the manufacturer’s 
instructions
.
630.2 Support.
Infrared radiant heaters shall be 
safely and adequately
fixed in 
an approved
position independent of 
gas and electric supply lines. Hangers and brackets shall be of 
noncombustible material.
630.3 Combustion and ventilation air.
Where unvented infrared heaters are installed, natural or mechanical means 
shall provide outdoor ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h (0.38 m
3
/min/kW) of the aggrega
te 
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
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13
input rating of all such heaters installed in the space. Exhaust openings for removing flue products shall be above the 
level of the heaters.
630.4 Installation in commercial garages and 
air
-
craft
hangars.
Overhead infrared heaters installed in garages 
for 
more than three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 
305.11.
SECTION FGC 631
BOILERS
631.1 Standards.
Boilers shall be listed in accordance with the requirements of ANSI Z21.13
/CSA 4.9
o
r UL 795. If 
applicable, the boiler shall be designed and constructed in accordance with the requirements of ASME CSD
-
1 and as 
applicable, the ASME 
Boiler and Pressure Vessel Code
, Sections I, II, IV, V, 
VI and
IX 
and
NFPA 
85
. Low
-
pressure 
boilers shall co
nform to the requirements of 12 NYCRR Part 4 and high
-
pressure boilers shall conform to the require-
ments of 12 NYCRR Part 14.
631.2 Installation.
In addition to the requirements of this code, the installation of boilers shall be in accordance with 
the manu
facturer’s instructions and the 
New York City
Mechanical Code
. Operating instructions of a permanent type 
shall be attached to the boiler. 
Spill switches must be installed on all flue gas draft openings and interlocked with all 
vented 
appliances.
Boilers shall have all controls set, adjusted and tested by the installer. A complete control diagram 
together with complete boiler operating instructions shall be furnished by the installer. The manufacturer’s rating data 
and the nameplate sha
ll be attached to the boiler.
631.3 Clearance to combustible materials.
Clearances to combustible materials shall be in accordance with Section 
308.4.
SECTION FGC 632
EQUIPMENT INSTALLED IN EXISTING UNLISTED
BOILERS
632.1 General.
Gas equipment installed i
n existing unlisted boilers shall comply with Section 631.1 and shall be 
installed in accordance with the manufacturer’s instructions and the 
New York City
Mechanical Code
.
SECTION FGC 633
STATIONARY FUEL CELL POWER SYSTEMS
633.1 General.
Stationary 
fuel c
ell
power systems having a power output not exceeding 
10
MW shall be tested in 
accordance with ANSI/CSA America FC 1 and shall be installed in accordance with the manufacturer’s 
instructions
, 
NFPA 853, the 
New York City Building Code
, the 
New York City Fir
e Code
and 
the 
New York City Electrical Code
. 
Indoor stationary fuel cell power systems used in hydrogen generating systems shall be located in accordance with the 
requirements of Section 706 of this code.
SECTION FGC 634
CHIMNEY DAMPER OPENING AREA
634.1 
Free opening area of chimney dampers.
Where an unlisted decorative appliance for installation in a vented 
fireplace is installed, the fireplace damper shall have a permanent free opening equal to or greater than specified in 
Table 634.1.
TABLE 634.1
FREE OPENING AREA OF CHIMNEY DAMPER FOR VENTING FLUE GASES 
FROM 
UNLISTED DECORATIVE APPLIANCES FOR INSTALLATION IN VENTED FIREPLACES
CHIMNEY 
HEIGHT
(feet)
MINIMUM PERMANENT FREE OPENING (square inches)
a
8
13
20
29
39
51
64
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2022 NEW YORK CITY FUEL GAS CODE
Appliance input rating 
(Btu per hour)
6
7,800
14,000
23,200
34,000
46,400
62,400
80,000
8
8,400
15,200
25,200
37,000
50,400
68,000
86,000
10
9,000
16,800
27,600
40,400
55,800
74,400
96,400
15
9,800
18,200
30,200
44,600
62,400
84,000
108,800
20
10,600
20,200
32,600
50,400
68,400
94,000
122,200
30
11,200
21,600
36,600
55,200
76,800
105,800
138,600
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 square inch = 645.
16 m
2
, 1 British thermal unit per hour = 0.2931 W.
a.
The first six minimum permanent free 
openings (8 to 51 square inches) correspond approximately to the cross
-
sectional areas of chimneys having 
diameters of 3 through 8 inches, respectively. The 64
-
square
-
inch opening corresponds to the cross
-
sectional area of standard 8
-
inch by 8
-
inch 
chimney
tile.
SECTION FGC 635
GASEOUS HYDROGEN SYSTEMS
635.1 Installation.
The installation of gaseous hydrogen systems shall be in accordance with the applicable require-
ments of the 
New York City
Fire Code
, the 
New York City
Building Code
, and Chapter 7 of this 
code
.
SECTION FGC 636
OUTDOOR DECORATIVE APPLIANCES
636.1 General.
Permanently fixed
-
in
-
place outdoor decorative appliances shall be tested in accordance with ANSI 
Z21.97
/CSA 2.41
and shall be installed in accordance with the manufacturer’s instructions.
CHAPTER 6
SPECIFIC APPLIANCES
SECTION FGC 601
GENERAL
601.1 Scope.
This chapter shall govern the approval, design, installation, construction, maintenance, alteration and 
repair of the appliances and equipment specifically identified herein. 
The approval, design, installation, construction, 
maintenance, alteration and re
pair of nongas
-
fired appliances shall be regulated by the 
New York City Mechanical 
Code
.
601.2 Fireplaces.
Fireplaces (solid fuel type or ANSI Z21.50
/CSA 2.22
) shall be installed with tight
-
fitting noncom-
bustible fireplace doors to control infiltration los
ses in construction type listed here:
1.
Masonry or factory
-
built fireplaces designed to allow an open burn.
2.
Whenever a decorative appliance (ANSI Standard Z21.60
/CSA 2.26
gas
-
log style unit) is installed in a vented 
solid fuel fireplace.
3.
Vented deco
rative gas fireplace appliances (ANSI Standard Z21.50
/CSA 2.22
units).
Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of 
the 
New York City Building Code
.
601.3 Flame safeguard device.
All f
uel gas space
-
heating appliances installed or used in a building occupied as a 
residence shall be equipped with an automatic flame safeguard device that shall shut off the fuel supply to the main 
burner or group of burners when the flame or pilot light the
reof is extinguished.
SECTION FGC 602
DECORATIVE 
GAS
-
FIRED
APPLIANCES FOR
INSTALLLATION IN FIREPLACES
602.1 General.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces shall be tested in ac-
cordance with ANSI Z21.60
/CSA 2.26
an
d shall be installed in accordance with the manufacturer’s 
instructions
. Man-
ually lighted natural gas decorative appliances shall be tested in accordance with ANSI Z21.84.
602.2 Flame safeguard device.
Decorative appliances for installation in approved solid fuel
-
burning fireplaces, with 
the exception of those tested in accordance with ANSI Z21.84, shall utilize a direct ignition device, an ignitor or a 
pilot flame to ignite the fuel at the main burner,
and shall be equipped with a flame safeguard device. The flame 
safeguard device shall automatically shut off the fuel supply to a main burner or group of burners when the means of 
ignition of such burners becomes inoperative.
602.3 Prohibited installation
s.
Decorative appliances for installation in fireplaces shall not be installed where pro-
hibited by Section 303.3.
SECTION FGC 603
LOG LIGHTERS
603.1 General.
Log lighters shall 
be installed
in accordance with the manufacturer’s 
instructions
.
603.2 Automati
c valves.
Automatic valves or semiautomatic valves shall be provided and shall comply with the 
applicable provisions of ANSI Z21.21/CSA 6.5.
SPECIFIC APPLIANCES
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 604
VENTED GAS FIREPLACES
(DECORATIVE APPLIANCES)
604.1 General.
Vented gas fireplaces shall be tested 
in accordance with ANSI Z21.50
/CSA 2.22
, shall be installed 
in accordance with the manufacturer’s 
instructions
and shall be designed and equipped as specified in Section 
602.2.
604.2 Access. 
Panels, grilles and access doors that are required to be 
removed for normal servicing operations shall 
not be attached to the building.
SECTION FGC 605
VENTED GAS FIREPLACE HEATERS
605.1 General.
Vented gas fireplace heaters shall be installed in accordance with the manufacturer’s 
instructions
, 
shall be tested i
n accordance with ANSI Z21.88
/CSA 2.33
and shall be designed and equipped as specified in Section 
602.2. 
The installation of unvented gas fired space heaters, gas stoves, gas logs, gas fireplaces and gas fireplace inserts 
is prohibited.
605.2 Separate flue
s.
Separate flues shall be provided for every fireplace and fireplace stove.
605.3 Combustion air supply.
The requirements of the 
New York City Energy Conservation Code
concerning com-
bustion air supply shall be followed.
SECTION FGC 606
RESERVED
SECTION FGC 607
COMMERCIAL
-
INDUSTRIAL INCINERATORS
AND CREMATORIES
607.1 Incinerators 
and crematories
, commercial
-
industrial.
Commercial
-
industrial
-
type incinerators 
and cremato-
ries
shall be constructed and installed in accordance with NFPA 82.
607.2 Compliance.
All new and existing refuse disposal systems shall be installed, altered and maintained in buildings 
in conformity wit
h the applicable provisions of the 
Administrative Code
and the 
New York City Air Pollution Control 
Code
.
SECTION FGC 608
VENTED WALL FURNACES
608.1 General.
Vented wall furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed
in accordance with the manufacturer’s 
instructions
.
608.2 Venting.
Vented wall furnaces shall be vented in accordance with Section 503.
608.3 Location.
Vented wall furnaces shall be located so as not to cause a fire hazard to walls, floors, combustible 
fu
rnishings or doors. Vented wall furnaces installed between bathrooms and adjoining rooms shall not circulate air 
from bathrooms to other parts of the building.
608.4 Door swing.
Vented wall furnaces shall be located so that a door cannot swing within 12 in
ches (
304.8
mm) of 
an air inlet or air outlet of such furnace measured at right angles to the opening. Doorstops or door closers shall not 
be installed to obtain this clearance.
608.5 Ducts prohibited.
Ducts shall not be attached to wall furnaces. 
Casing extension boots shall not be installed 
unless listed as part of the appliance.
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2022 NEW YORK CITY FUEL GAS CODE
6
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3
608.6 Access.
Vented wall furnaces shall be provided with access for cleaning of heating surfaces, removal of burners, 
replacement of sections, motors, controls, filters 
and other working parts, and for adjustments and lubrication of parts 
requiring such attention. Panels, grilles and access doors that are required to be removed for normal servicing opera-
tions shall not be attached to the building construction.
SECTION FGC
609
FLOOR FURNACES
609.1 General.
Floor furnaces shall be tested in accordance with ANSI Z21.86/CSA 2.32 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
609.2 Placement.
The following provisions apply to floor 
furnaces
:
1.
Floor
s.
Floor furnaces shall not be installed in the floor of any doorway, stairway landing, aisle or passageway 
of any enclosure, public or private, or in 
a means of egress
from any such room or space.
2.
Walls and corners.
The register of a floor furnace with
a horizontal warm
-
air outlet shall not be placed closer 
than 6 inches (
152
.4
mm) to the nearest wall. A distance of 
not less than
18 inches (
457
.2
mm) from two adjoin-
ing sides of the floor furnace register to walls shall be provided to eliminate the neces
sity of occupants walking 
over the warm
-
air discharge. The remaining sides shall be permitted to be placed not closer than 6 inches (
152
.4
mm) to a wall. 
Wall
-
register
models shall not be placed closer than 6 inches (
152
.4
mm) to a corner.
3.
Draperies.
Th
e furnace shall be placed so that a door, drapery or similar object cannot be nearer than 12 inches 
(
304.8
mm) to any portion of the register of the furnace.
4.
Floor construction.
Floor furnaces shall 
be located so as to
be readily accessible. Means shall be provided for 
supporting the furnace when the grille is removed. Floor furnaces
shall be installed 
only on floors of noncom-
bustible
construction 
having at least a 2
-
hour fire rating, except that floor furnace enclosure
s in one
-
and two
-
family dwellings shall be constructed of noncombustible materials with a fire
-
resistance rating 
not less than
1 
hour.
5.
Thermostat.
The controlling thermostat for a floor furnace shall be located within the same room or space as 
the floo
r furnace or shall be located in an adjacent room or space that is permanently open to the room or space 
containing the floor furnace.
609.3 Bracing.
The floor around the furnace shall be braced and headed with a support framework designed in accordance 
wi
th 
the 
New York City
Building Code
.
609.4 Clearance.
The lowest portion of the floor furnace shall have not less than a 6
-
inch (
152
.4
mm) clearance from 
the grade level; except where the lower 
6 inch
(
152
.4
mm) portion of the floor furnace is sealed by the
manufacturer 
to prevent entrance of water, the minimum clearance shall be not less than 2 inches (
50.8
mm). Where such clearances 
cannot be provided, the ground below and to the sides shall be excavated to form a pit under the furnace so that the 
required
clearance is provided beneath the lowest portion of the furnace. A 
12 inch
(
304.8
mm) minimum clearance 
shall be provided on all sides except the control side, which shall have an 18 inch (
457
.2
mm) minimum clearance.
609.5 Reserved.
609.6 Reserved.
609.7 Enclosures.
Enclosures of floor furnaces shall be
constructed 
entirely
of noncomb
ustible materials 
with a fire
-
resistance rating of at least 1
-
hour and the enclosure shall be provided with adequate outdoor air to ensure proper 
combustion. The enclosure
shall be provided with 
adequate means of
access 
for servicing the furnace.
609.8 Duc
t temperature.
The outlet duct temperature of warm
-
air heating furnaces shall
not 
be greater
than 
250°F 
(
121.1
°C).
609.9 One
-
and two
-
family dwellings.
Floor furnace enclosures shall be constructed of noncombustible materials 
with a fire
-
resistance rating 
of at least 1
-
hour. Means shall be provided for supporting the furnace when the grille is 
removed. Clearances shall be provided as per NFPA 54.
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2022 NEW YORK CITY FUEL GAS CODE
SECTION FGC 610
DUCT FURNACES
610.1 General.
Duct furnaces shall be tested in accordance with ANSI Z83.8
/CSA 2.6
or UL 795 and shall be installed 
in accordance with the manufacturer’s 
instructions
.
610.2 Access panels.
Ducts connected to duct furnaces shall have removable access panels on both the upstream and 
downstream sides of the furnace.
610.3 Location of draft hood and controls.
The controls, combustion air inlets and draft hoods for duct furnaces 
shall be located
outside of the ducts. The draft hood shall be located in the same enclosure from which combustion air 
is taken.
610.4 Circulating air.
Where a duct furnace is installed so that supply ducts convey air to areas outside the space 
containing the furnace, the
return air 
shall be
conveyed by a duct(s) sealed to the furnace casing and terminating 
outside the space containing the furnace. 
The duct furnace shall be installed on the positive pressure side of the circu-
lating air blower.
610.5 Unvented duct furnaces.
Unvented duct furnaces are prohibited.
SECTION FGC 611
NONRECIRCULATING DIRECT
-
FIRED 
INDUSTRIAL AIR HEATERS
611.1 General.
Nonrecirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.4/CSA 3.7 and shall be 
installed in accordance with the manufacturer’s instructions.
611.2 Installation.
Nonrecirculating direct
-
fired industrial air heaters shall not be use
d to supply any area containing 
sleeping quarters. Nonrecirculating direct
-
fired industrial air heaters shall be installed only in industrial or commercial 
occupancies. Nonrecirculating direct
-
fired industrial air heaters shall be permitted to provide vent
ilation air.
611.3 Clearance from combustible materials.
Nonrecirculating direct
-
fired industrial air heaters shall be installed 
with a clearance from combustible materials of not less than that shown on the rating plate and in the manufacturer’s 
instructi
ons.
611.4 Supply air.
All air handled by a nonrecirculating direct
-
fired industrial air heater, including combustion air, 
shall be ducted directly from the outdoors.
611.5 Outdoor air louvers.
If outdoor air louvers of either the manual or automatic type 
are used, such devices shall 
be proven to be in the open position prior to allowing the main burners to operate.
611.6 Atmospheric vents and gas reliefs or bleeds.
Nonrecirculating direct
-
fired industrial air heaters with valve 
train components equipped wi
th atmospheric vents or gas reliefs or bleeds shall have their atmospheric vent lines or 
gas reliefs or bleeds lead to the outdoors. Means shall be employed on these lines to prevent water from entering and 
to prevent blockage by insects and foreign matter
. An atmospheric vent line shall not be required to be provided on a 
valve train component equipped with a listed vent limiter.
611.7 Relief opening.
The design of the installation shall include provisions to permit nonrecirculating direct
-
fired 
industrial
air heaters to operate at rated capacity without overpressurizing the space served by the heaters by taking 
into account the structure’s designed infiltration rate, providing properly designed relief openings or an interlocked 
power exhaust system, or a c
ombination of these methods. The structure’s designed infiltration rate and the size of 
relief openings shall be determined by approved engineering methods. Relief openings shall be permitted to be louvers 
or counterbalanced gravity dampers. Motorized damp
ers or closable louvers shall be permitted to be used, provided 
they are verified to be in their full open position prior to main burner operation.
611.8 Access.
Nonrecirculating direct
-
fired industrial air heaters shall be provided with access for removal
of burners; 
replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring 
maintenance.
611.9 Purging.
Inlet ducting, where used, shall be purged by not less than four air changes prior to an igniti
on attempt.
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611.10 Controls.
Direct
-
fired make
-
up air heaters shall be equipped with airflow
-
sensing devices, safety shutoff de-
vices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their lis
ting.
SECTION FGC 612
RECIRCULATING DIRECT
-
FIRED INDUSTRIAL AIR
HEATERS
612.1 General.
Recirculating direct
-
fired industrial air heaters shall be listed to ANSI Z83.18 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
612.2 Locatio
n.
Recirculating direct
-
fired industrial air heaters shall be installed only in industrial and commercial 
occupancies. Recirculating direct
-
fired air heaters shall not serve any area containing sleeping quarters. Recirculating 
direct
-
fired industrial air h
eaters shall not be installed in hazardous locations or in buildings that contain flammable 
solids, liquids or gases, explosive materials or substances that can become toxic when exposed to flame or heat.
612.3 Installation.
Direct
-
fired industrial air hea
ters shall be permitted to be installed in accordance with their listing 
and the manufacturer’s instructions. Direct
-
fired industrial air heaters shall be installed only in industrial or commer-
cial occupancies. Direct
-
fired industrial air heaters shall be 
permitted to provide fresh air ventilation.
612.4 Clearance from combustible materials.
Direct
-
fired industrial air heaters shall be installed with a clearance 
from combustible material of not less than that shown on the label and in the manufacturer’s ins
tructions.
612.5 Air supply.
Air to direct
-
fired industrial air heaters shall be taken from the building, ducted directly from out-
doors, or a combination of both. Direct
-
fired industrial air heaters shall incorporate a means to supply outside venti-
lation a
ir to the space at a rate of not less than 4 cubic feet per minute per 1,000 Btu per hour (0.38 m
3
per min per 
kW) of rated input of the heater. If a separate means is used to supply ventilation air, an interlock shall be provided so 
as to lock out the mai
n burner operation until the mechanical means is verified. Where outside air dampers or closing 
louvers are used, they shall be verified to be in the open position prior to main burner operation.
612.6 Atmospheric vents, gas reliefs or bleeds.
Direct
-
fired
industrial air heaters with valve train components 
equipped with atmospheric vents, gas reliefs or bleeds shall have their atmospheric vent lines and gas reliefs or bleeds 
lead to the outdoors.
Means shall be employed on these lines to prevent water from 
entering and to prevent blockage by insects and 
foreign matter. An atmospheric vent line shall not be required to be provided on a valve train component equipped 
with a listed vent limiter.
612.7 Relief opening.
The design of the installation shall include
adequate provision to permit direct
-
fired industrial 
air heaters to operate at rated capacity by taking into account the structure’s designed infiltration rate, providing 
properly designed relief openings or an interlocked power exhaust system, or a combi
nation of these methods. The 
structure’s designed infiltration rate and the size of relief openings shall be determined by a registered design profes-
sional. Relief openings shall be permitted to be louvers or counterbalanced gravity dampers. Motorized damp
ers or 
closable louvers shall be permitted to be used, provided they are verified to be in their full open position prior to main 
burner operation.
612.8 Controls.
Recirculating direct
-
fired air heaters shall be equipped with airflow
-
sensing devices, safet
y shutoff 
devices, operating temperature controls and thermally actuated temperature limit controls in accordance with the terms 
of their listing.
SECTION FGC 613
CLOTHES DRYERS
613.1 General.
Clothes dryers shall be tested in accordance with ANSI Z21.5.1
/CSA 7.1
or ANSI Z21.5.2
/CSA 7.2
, 
and shall be installed in accordance with the manufacturer’s 
instructions
.
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SECTION FGC 614
CLOTHES DRYER EXHAUST
614.1 
Clothes dryer exhaust.
Clothes dryer exhaust 
shall be
in accordance with Section 
504
of the 
New York City
Mechanical Code
.
SECTION FGC 615
SAUNA HEATERS
615.1 General.
Sauna heaters shall be installed in accordance with the manufacturer’s 
instructions
.
615.2 Location and protect
ion.
Sauna heaters shall be located so as to minimize the possibility of accidental contact 
by a person in the room.
615.2.1 Guards.
Sauna heaters shall be protected from accidental contact by an approved guard or barrier of ma-
terial having a low coefficient of thermal conductivity. The guard shall not substantially affect the transfer of heat 
from the heater to the room.
615.3 Access.
Panels, grilles and access doors that are required to be removed for normal servicing operations shall 
not be attached to the building.
615.4 Combustion and dilution air intakes.
Sauna heaters of other than the direct
-
vent type shall be installed with 
the
draft hood and combustion air intake located outside the sauna room. Where the combustion air inlet and the draft 
hood are in a dressing room adjacent to the sauna room, there shall be provisions to prevent physically blocking the 
combustion air inlet and
the draft hood inlet, and to prevent physical contact with the draft hood and vent assembly, 
or warning notices shall be posted to avoid such contact. Any warning notice shall be easily readable, shall contrast 
with its background and the wording shall be
in letters not less than 
1
/
4
inch
(6.4 mm) high.
615.5 Combustion and ventilation air.
Combustion air shall not be taken from inside the sauna room. Combustion 
and ventilation air for a sauna heater not of the direct
-
vent type shall be provided to the are
a in which the combustion 
air inlet and draft hood are located in accordance with Section 304.
615.6 Heat and time controls.
Sauna heaters shall be equipped with a thermostat which will limit room temperature 
to 194°F (90°C). If the thermostat is not an in
tegral part of the sauna heater, the heat
-
sensing element shall be located 
within 6 inches (
152
.4
mm) of the ceiling. If the heat
-
sensing element is a capillary tube and bulb, the assembly shall 
be attached to the wall or other support, and shall be protec
ted against physical damage.
615.6.1 Timers.
A timer, if provided to control main burner operation, shall have a maximum operating time of 1 
hour. The control for the timer shall be located outside the sauna room.
615.7 Sauna room.
A ventilation opening in
to the sauna room shall be provided. The opening shall be not less than 
4 inches by 8 inches (
101.6
mm by 
203
.2
mm) located near the top of the door into the sauna room.
615.7.1 Warning notice.
Warning notice. The following permanent notice, constructed of
approved material, shall 
be mechanically attached to the sauna room on the outside:
WARNING: DO NOT EXCEED 30 MINUTES IN SAUNA. EXCESSIVE EXPOSURE CAN BE HARMFUL 
TO HEALTH. ANY PERSON WITH POOR HEALTH SHOULD CONSULT A PHYSICIAN BEFORE USING 
SAUNA.
The wor
ds shall contrast with the background and the wording shall be in letters not less than 
1
/
4
inch (6.4 mm) 
high.
Exception:
This section shall not apply to one
-
and two
-
family dwellings.
SECTION FGC 616
ENGINE AND GAS TURBINE
-
POWERED
EQUIPMENT 
AND APPLIANCE
S
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616.1 Powered equipment.
Permanently installed equipment powered by internal combustion engines and turbines 
shall be installed in accordance with the manufacturer’s 
instructions
and NFPA 37. Stationary engine generator as-
semblies shall meet the requirements of UL 2200.
616.2 Gas
supply connection.
Equipment powered by internal combustion engines and turbines shall not be rigidly 
connected to the gas supply piping.
SECTION FGC 617
POOL AND SPA HEATERS
617.1 General.
Pool and spa heaters shall be tested in accordance with ANSI Z21.
56
/CSA 4.7
and shall be installed 
in accordance with the manufacturer’s 
instructions
.
SECTION FGC 618
FORCED
-
AIR WARM
-
AIR FURNACES
618.1 General.
Forced
-
air warm
-
air furnaces shall be tested in accordance with ANSI Z21.47
/CSA 2.3
or UL 795 
and shall be ins
talled in accordance with the manufacturer’s instructions.
618.2 Forced
-
air furnaces.
The minimum unobstructed total area of 
outdoor
and return air ducts or openings to a 
forced
-
air
warm
-
air furnace shall be not less than 2 square inches for each 1,000 Btu
/h (4402 mm
2
/W) output rating 
capacity of the furnace and not less than that specified in the furnace manufacturer’s instructions. The minimum un-
obstructed total area of supply ducts from a forced
-
air warm
-
air furnace shall be not less than 2 square inches
(1290.32 
mm
2
)
for each 1,000 Btu/h (4402 mm
2
/W) output rating capacity of the furnace and not less than that specified in the 
furnace manufacturer’s 
instructions
.
Exception:
The total area 
of supply
air ducts and 
outdoor
and return air ducts shall not be 
required to be larger 
than the minimum size required by the furnace manufacturer’s 
instructions
.
618.3 Dampers.
Volume dampers shall not be placed in the air inlet to a furnace in a manner that will reduce the 
required air to the furnace.
618.4
Prohibited 
sources. 
Outdoor or return air 
for forced
-
air heating
or forced
-
air
heating and cooling systems
shall 
not be taken from the following locations:
1.
Closer
than 10 feet (3048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system 
or the discharge outlet of an exhaust fan, unless the outlet is 3 feet 
914
.4
mm) above the 
outside
air inlet.
2.
Where there is the presence of objectiona
ble odors, fumes or flammable vapors; or where located less than 10 
feet (3048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a 
sidewalk, street, alley or driveway.
3.
A hazardous or insanitary location or a refrigeration machinery room as defined in the 
New York City
Mechanical 
Code
.
4.
A room or space, the volume of which is less than 25 percent of the entire volume served by such system. Where 
connected by a permanent
opening having an area sized in accordance with Section 618.2, adjoining rooms or 
spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms 
or spaces.
Exception:
The minimum volume requirement shall not a
pply where the amount of return air taken from a 
room or space is less than or equal to the amount of supply air delivered to such room or space.
5.
A room or space containing an appliance where such a room or space serves as the sole source of return air.
Exception:
This shall not apply where:
1.
The appliance is a direct
-
vent appliance or an appliance not requiring a vent in accordance with Section 
501.8.
2.
The room or space complies with the following requirements:
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2.1.
The return air shall be taken fro
m a room or space having a volume
exceeding 1 cubic foot for each 
10 Btu/h (9.
6 L
/W) of combined input rating of all fuel
-
burning appliances therein.
2.2.
The volume of supply air discharged back into the same space shall be approximately equal to the 
volu
me of return air taken from the space.
2.3.
Return
-
air inlets shall not be located within 10 feet (3048 mm) 
of a
draft hood in the same room or 
space 
or the combustion chamber of any atmospheric burner appliance in the same room or space
.
3.
Rooms or space
s containing solid fuel
-
burning appliances, provided that return
-
air inlets are located 
not less than 10 feet (3048 mm) from the firebox of such appliances.
6.
A closet, bathroom, toilet room, kitchen, garage, 
boiler
room, furnace room or 
unconditioned
att
ic.
Exceptions
:
1.
Where return air intakes are located not less than 10 feet (3048 mm) from cooking appliances and serve 
only the kitchen area, taking return air from a kitchen area shall not be prohibited.
2.
Dedicated forced
-
air systems serving only a g
arage shall not be prohibited from obtaining return air 
from the garage.
7.
A crawl space by means of direct connection to the return side of 
forced
-
air
system. Transfer openings in the 
crawl space enclosure shall not be prohibited.
618.5
Screen.
Required outdoor air inlets for residential portions of a building shall be covered with a screen having 
1
/
4
-
inch (6.4 mm) openings. Required outdoor air inlets 
serving a nonresidential portion of a building shall be 
covered with screen having openings larger than 
1
/
4
inch (6.4 mm) and not larger than 1 inch 
25
.4
mm).
618.6
Return
-
air limitation.
Return air from one dwelling unit shall not be discharged into anoth
er dwelling unit.
618.7
Furnace plenums and air ducts.
Where a furnace is installed so that supply ducts carry air circulated by the 
furnace to areas outside of the space containing the furnace, the return air 
shall be
handled by a duct(s) sealed to the 
furnace casing and terminating outside of the space containing the furnace.
SECTION FGC 619
CONVERSION BURNERS
619.1 Conversion burners.
The installation of conversion burners shall conform to ANSI Z21.8 
and ASME CSD
-
1, 
including Appendix C
.
SECTION FGC 620
UNIT HEATERS
620.1 General.
Unit heaters shall be tested in accordance with ANSI Z83.8
/CSA 2.6
and shall be installed in accord-
ance with the manufacturer’s 
instructions
.
620.2 Support.
Suspended
-
type unit heaters shall
be supported by elements that are designed and constructed to ac-
commodate the weight and dynamic loads. Hangers and brackets shall be of noncombustible material.
620.3 Ductwork.
Ducts shall not be connected to a unit heater unless the heater is listed for
such installation.
620.4 Clearance.
Suspended
-
type unit heaters shall be installed with clearances to combustible materials of not less 
than 18 inches (
457
.2
mm) at the sides, 12 inches (
304.8
mm) at the bottom and 6 inches (
152
.4
mm) above the top 
where 
the unit heater has an internal draft hood or 1 inch (
25
.4
mm) above the top of the sloping side of the vertical 
draft hood.
Floor
-
mounted
-
type unit heaters shall be installed with clearances to combustible materials at the back and one 
side only of not le
ss than 6 inches (
152
.4
mm). Where the flue gases are vented horizontally, the 6
-
inch (
152
.4
mm) 
clearance shall be measured from the draft hood or vent instead of the rear wall of the unit heater. Floor
-
mounted
-
type 
unit heaters shall not be installed on 
combustible floors unless listed for such installation.
Clearances for servicing all unit heaters shall be in accordance with the manufacturer’s 
instructions
.
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Exception:
Unit heaters listed for reduced clearance shall be permitted to be installed with such clearances in 
accordance with their listing and the manufacturer’s instructions 
and as approved by the department
.
620.5 Installation in commercial garages and aircraft
hangars.
Unit heaters installed in garages for more than 
three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 305.11.
SECTION FGC 621
UNVENTED ROOM HEATERS
621.1 General.
The installation of unvented
room heaters is prohibited.
621.2 Reserved.
621.3 Reserved.
621.4 Reserved.
621.5 Reserved.
621.6 Reserved.
621.7 Reserved.
SECTION FGC 622
VENTED ROOM HEATERS
622.1 General.
Vented room heaters shall be tested in accordance with ANSI Z21.86/CSA 2.32, 
installed
in accord-
ance with the manufacturer’s instructions
, and shall be
designed and equipped as specified in Section 602.2
of this 
code
.
SECTION FGC 623
COOKING APPLIANCES
62
3.1 Cooking appliances.
Cooking appliances that are designed for permanent installation, including ranges, ovens, 
stoves, broilers, grills, fryers, griddles, hot plates and barbecues, shall be tested in accordance with ANSI Z21.1
/CSA 
6.5
, ANSI Z21.58
/CSA 1
.6
or ANSI Z83.11
/CSA 1.8
and shall be installed in accordance with the manufacturer’s 
instructions
.
623.1.1 LPG.
Except as may be permitted by the 
New York City Fire Code
, cooking appliances using LPG are 
prohibited.
623.2 Prohibited location.
Cooking app
liances designed, tested, listed and labeled for use in commercial occupancies 
shall not be installed within dwelling units or within any area where domestic cooking operations occur.
Exception:
Appliances that are also listed as domestic cooking appliances.
623.2.1 Barbeque grills.
Barbeque grills piped to natural gas shall not be installed or operated within 10 feet (3048 
mm) of any combustible waste or combustible material including combustibl
e building surfaces, balconies and 
decks.
623.3 Domestic appliances.
Cooking appliances installed within dwelling units and within areas where domestic 
cooking operations occur shall be listed and labeled as household
-
type appliances for domestic use.
623.
4 Domestic range installation.
Domestic ranges installed on combustible floors shall be set on their own bases 
or legs and shall be installed with clearances of not less than that shown on the label.
623.5 Open
-
top broiler unit hoods.
A ventilating hood sh
all be provided above a domestic open
-
top broiler unit, 
unless otherwise listed for forced down draft ventilation.
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623.5.1 Clearances.
A minimum clearance of 24 inches (
609.6
mm) shall be maintained between the cooking top 
and combustible material above th
e hood. The hood shall be at least as wide as the open
-
top broiler unit and be 
centered over the unit.
623.6 Commercial cooking appliance venting.
Commercial cooking appliances, other than those exempted by Sec-
tion 501.8, shall be vented by connecting the 
appliance to a vent or chimney in accordance with this code and the 
appliance manufacturer’s instructions or the appliance shall be vented in accordance with Section 505.1.1.
623.7 Domestic ventilation.
When a hood is provided for a domestic cooking applia
nce, the exhaust and make
-
up air 
systems shall be properly engineered and designed in accordance with Chapter 5 of this code and the 
New York City 
Mechanical Code
.
Household cooking appliances shall have a vertical clearance above the cooking top of not le
ss 
than 30 inches (760 mm) to combustible material and metal cabinets. A minimum clearance of 24 inches (
609.6
mm)
, 
measured to the underside of the above cabinet or combustible material,
is permitted where one of the following is 
installed:
1.
The undersi
de of the combustible material or metal cabinet above the cooking top is protected with not less than 
1
/
4
-
inch (
6.4
mm) insulating millboard covered with sheet metal not less than 0.0122 inch (0.3 mm) thick.
2.
A metal ventilating hood constructed of sheet metal not less than 0.0122 inch (0.3 mm) thick is installed above 
the cooking top with a clearance of not less tha
n 
1
/
4
inch (6.4 mm) between the hood and the underside of the 
combustible material or metal cabinet. The hood shall have a width not less than the width of the appliance and 
shall be centered over the appliance.
3.
A listed cooking appliance or microwave o
ven is installed over a listed cooking appliance and in compliance 
with the terms of the manufacturer’s installation instructions for the upper appliance.
SECTION FGC 624
WATER HEATERS
624.1 General.
Water heaters shall be tested in accordance with 
ANSI Z21.10.1
/CSA 4.1
and ANSI Z21.10.3
/CSA 
4.3
and shall be installed in accordance with the manufacturer’s 
instructions
. Water heaters utilizing fuels other than 
fuel gas shall be regulated by the 
New Yor
k City Mechanical Code
. Approval for water heaters 350,000 Btu/h input 
(
102.6
kW) and above shall be obtained from the New York City Department of Environmental Protection.
624.1.1 Installation requirements.
The requirements for water heaters relative to s
izing, relief valves, drain pans 
and scald protection shall be in accordance with the 
New York City
Plumbing Code
and the following:
1.
No person shall install or maintain in any dwelling unit a gas fuel
-
fired water heater unless the heater obtains 
combust
ion air directly from the outside of the building.
2.
No person shall install or maintain a gas
-
fueled water heater in a room occupied for sleeping purposes, or 
cause or permit to be occupied for sleeping purposes any room in which a gas
-
fueled heater is i
nstalled.
3.
Each heater shall be connected to a flue or outlet pipe.
624.2 Water heaters utilized for space heating.
Water heaters utilized both to supply potable hot water and provide 
hot water for space
-
heating applications shall be listed and labeled f
or such applications by the manufacturer, and shall 
be 
built in accordance with Section IV of the ASME 
Boiler and Pressure Vessel Code
with an “H” code stamp. They 
shall be
installed in accordance with the manufacturer’s 
instructions
, the ASME 
Boiler and Pressure Vessel Code
and 
the 
New York City
Plumbing Code
.
SECTION FGC 625
REFRIGERATORS
625.1 General.
Refrigerators shall be tested in accordance with ANSI Z21.19
/CSA 1.4
a
nd shall be installed in ac-
cordance with the manufacturer’s 
instructions
.
Refrigerators shall be provided with adequate clearances for ventilation at the top and back, and shall be installed 
in accordance with the manufacturer’s instructions. If such instr
uctions are not available, 
not less than
2 inches (
50.8
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2022 NEW YORK CITY FUEL GAS CODE
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mm) shall be provided between the back of the refrigerator and the wall and 
not less than
12 inches (
304.8
mm) above 
the top.
SECTION FGC 626
GAS
-
FIRED TOILETS
626.1 General.
Gas
-
fired toilets are 
not
approved
for use 
in New York City
.
626.2 Reserved.
SECTION FGC 627
AIR CONDITIONING APPLIANCES
627.1 General.
Gas
-
fired air
-
conditioning appliances shall be tested in accordance with ANSI Z21.40.1
/CGA 2.91
or 
ANSI Z21.40.2
/CGA 2.92
and shall be installed in accordance with the manufacturer’s 
instructions
.
627.2 Independent piping.
Gas piping serving heating appli
ances shall be permitted to also serve cooling appliances 
where such heating and cooling appliances cannot be operated simultaneously (see Section 402).
627.3 Connection of gas engine
-
powered air conditioners.
To protect against the effects of normal vibra
tion in 
service, gas engines shall not be rigidly connected to the gas supply piping. 
Where units are powered by internal 
combustion engines and turbines, installation shall comply with Section 616.1.
627.4 Clearances for indoor installation.
Air
-
condition
ing appliances installed in rooms other than alcoves and 
closets shall be installed with clearances not less than those specified in Section 
308.3
.
Exceptions:
1.
Air
-
conditioning appliances listed for installation at lesser clearances than those specified
in Section 308.3 
shall be permitted to be installed in accordance with such listing and the manufacturer’s instructions
.
Air
-
conditioning appliances installed in rooms other than alcoves and closets shall be permitted to be installed 
with reduced clearanc
es to combustible material, provided that the combustible material is protected in ac-
cordance with Table 308.2.
2.
Air
-
conditioning
appliances listed for installation at greater clearances than those specified in Section 308.3 
shall be installed in accorda
nce with such listing and the manufacturer’s instructions.
627.5 Alcove and closet installation.
Air
-
conditioning appliances installed in spaces such as alcoves and closets shall 
be specifically listed for such installation and installed in accordance with
the terms of such listing. The installation 
clearances for air
-
conditioning appliances in alcoves and closets shall not be reduced by the protection methods de-
scribed in Table 308.2.
627.6 Installation.
Air
-
conditioning appliances shall be installed in ac
cordance with the manufacturer’s instructions. 
Unless the appliance is listed for installation on a combustible surface such as a floor or roof, or unless the surface is 
protected in an approved manner, 
the appliance
shall be installed on a surface of nonc
ombustible construction with 
noncombustible material and surface finish and with no combustible material against the underside thereof.
627.7 Plenums and air ducts.
A plenum supplied as a part of the air
-
conditioning appliance shall be installed in 
accorda
nce with the appliance manufacturer’s instructions. Where a plenum is not supplied with the appliance, such 
plenum shall be installed in accordance with the fabrication and installation instructions provided by the plenum and 
appliance manufacturer. The me
thod of connecting supply and return ducts shall facilitate proper circulation of air.
Where 
the
air
-
conditioning appliance is installed within a space separated from the spaces served by the appliance, 
the air circulated by the appliance shall be conveyed
by ducts that are sealed to the casing of the appliance and that 
separate the circulating air from the combustion and ventilation air.
627.8 Refrigeration coils.
A refrigeration coil shall not be installed in conjunction with a forced
-
air furnace where 
circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the 
external static resistance imposed by the duc
t system and cooling coil at the air throughput necessary for heating or 
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2022 NEW YORK CITY FUEL GAS CODE
cooling, whichever is greater. Furnaces shall not be located upstream from cooling units, unless the cooling unit is 
designed or equipped so as not to develop excessive temperature or
pressure. Refrigeration coils shall be installed in 
parallel with or on the downstream side of central furnaces to avoid condensation in the heating element, unless the 
furnace has been specifically listed for downstream installation. With a parallel flow
arrangement, the dampers or 
other means used to control flow of air shall be sufficiently tight to prevent any circulation of cooled air through the 
furnace.
Means shall be provided for disposal of condensate and to prevent dripping of condensate onto the
heating element.
627.9 Cooling units used with heating boilers.
Boilers, where used in conjunction with refrigeration systems, shall 
be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent 
th
e chilled medium from entering the heating boiler. Where hot water heating boilers are connected to heating coils 
located in air
-
handling units where they might be exposed to refrigerated air circulation, such boiler piping systems 
shall be equipped with f
low control valves or other automatic means to prevent gravity circulation of the boiler water 
during the cooling cycle.
627.10 Switches in electrical supply line.
Means for interrupting the electrical supply to the air
-
conditioning appli-
ance and to its associated cooling tower (if supplied and installed in a location remote from the air conditioner) shall 
be provided within sight of and not over 50 feet (15 240 mm)
from the air conditioner and cooling tower.
SECTION FGC 628
ILLUMINATING APPLIANCES
628.1 General.
Illuminating appliances shall be tested in accordance with ANSI Z21.42 and shall be installed in 
accordance with the manufacturer’s 
instructions
.
628.2 Moun
ting on buildings.
Illuminating appliances designed for wall or ceiling mounting shall be securely at-
tached to substantial structures in such a manner that they are not dependent on the gas piping for support.
628.3 Mounting on posts.
Illuminating applianc
es designed for post mounting shall be securely and rigidly attached 
to a post. Posts shall be rigidly mounted 
in accordance with the requirements of the 
New York City Building Code
. 
Drain openings
shall be provided near the base of posts where there is a 
possibility of water collecting inside them.
628.4 Appliance pressure regulators.
Where an appliance pressure regulator is not supplied with an illuminating 
appliance and the service line is not equipped with a service pressure regulator, an appliance pres
sure regulator shall 
be installed in the line to the illuminating appliance. For multiple installations, one regulator of adequate capacity shall 
be permitted to serve more than one illuminating appliance.
SECTION FGC 629
CERAMIC
KILNS
629.1 General.
Kilns
shall be 
listed and labeled unless otherwise approved
in accordance with 
Section 105.1. Electric 
kilns
shall comply with 
UL 499. The approval of unlisted appliances in accordance with Section 105.1 shall be based 
on an approved engineering evaluation.
SEC
TION FGC 630
INFRARED RADIANT HEATERS
630.1 General.
Infrared radiant heaters shall be tested in accordance with 
ANSI Z83.19
/CSA 2.35
or ANSI 
Z83.20
/CSA 2.34
and shall be installed in accordance with the manufacturer’s 
instructions
.
630.2 Support.
Infrared radiant heaters shall be 
safely and adequately
fixed in 
an approved
position independent of 
gas and electric supply lines. Hangers and brackets shall be of 
noncombustible material.
630.3 Combustion and ventilation air.
Where unvented infrared heaters are installed, natural or mechanical means 
shall provide outdoor ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h (0.38 m
3
/min/kW) of the aggrega
te 
SPECIFIC APPLIANCES
2022 NEW YORK CITY FUEL GAS CODE
6
-
13
input rating of all such heaters installed in the space. Exhaust openings for removing flue products shall be above the 
level of the heaters.
630.4 Installation in commercial garages and 
air
-
craft
hangars.
Overhead infrared heaters installed in garages 
for 
more than three motor vehicles or in aircraft hangars shall be installed in accordance with Sections 305.9, 305.10 and 
305.11.
SECTION FGC 631
BOILERS
631.1 Standards.
Boilers shall be listed in accordance with the requirements of ANSI Z21.13
/CSA 4.9
o
r UL 795. If 
applicable, the boiler shall be designed and constructed in accordance with the requirements of ASME CSD
-
1 and as 
applicable, the ASME 
Boiler and Pressure Vessel Code
, Sections I, II, IV, V, 
VI and
IX 
and
NFPA 
85
. Low
-
pressure 
boilers shall co
nform to the requirements of 12 NYCRR Part 4 and high
-
pressure boilers shall conform to the require-
ments of 12 NYCRR Part 14.
631.2 Installation.
In addition to the requirements of this code, the installation of boilers shall be in accordance with 
the manu
facturer’s instructions and the 
New York City
Mechanical Code
. Operating instructions of a permanent type 
shall be attached to the boiler. 
Spill switches must be installed on all flue gas draft openings and interlocked with all 
vented 
appliances.
Boilers shall have all controls set, adjusted and tested by the installer. A complete control diagram 
together with complete boiler operating instructions shall be furnished by the installer. The manufacturer’s rating data 
and the nameplate sha
ll be attached to the boiler.
631.3 Clearance to combustible materials.
Clearances to combustible materials shall be in accordance with Section 
308.4.
SECTION FGC 632
EQUIPMENT INSTALLED IN EXISTING UNLISTED
BOILERS
632.1 General.
Gas equipment installed i
n existing unlisted boilers shall comply with Section 631.1 and shall be 
installed in accordance with the manufacturer’s instructions and the 
New York City
Mechanical Code
.
SECTION FGC 633
STATIONARY FUEL CELL POWER SYSTEMS
633.1 General.
Stationary 
fuel c
ell
power systems having a power output not exceeding 
10
MW shall be tested in 
accordance with ANSI/CSA America FC 1 and shall be installed in accordance with the manufacturer’s 
instructions
, 
NFPA 853, the 
New York City Building Code
, the 
New York City Fir
e Code
and 
the 
New York City Electrical Code
. 
Indoor stationary fuel cell power systems used in hydrogen generating systems shall be located in accordance with the 
requirements of Section 706 of this code.
SECTION FGC 634
CHIMNEY DAMPER OPENING AREA
634.1 
Free opening area of chimney dampers.
Where an unlisted decorative appliance for installation in a vented 
fireplace is installed, the fireplace damper shall have a permanent free opening equal to or greater than specified in 
Table 634.1.
TABLE 634.1
FREE OPENING AREA OF CHIMNEY DAMPER FOR VENTING FLUE GASES 
FROM 
UNLISTED DECORATIVE APPLIANCES FOR INSTALLATION IN VENTED FIREPLACES
CHIMNEY 
HEIGHT
(feet)
MINIMUM PERMANENT FREE OPENING (square inches)
a
8
13
20
29
39
51
64
SPECIFIC APPLIANCES
6
-
14
2022 NEW YORK CITY FUEL GAS CODE
Appliance input rating 
(Btu per hour)
6
7,800
14,000
23,200
34,000
46,400
62,400
80,000
8
8,400
15,200
25,200
37,000
50,400
68,000
86,000
10
9,000
16,800
27,600
40,400
55,800
74,400
96,400
15
9,800
18,200
30,200
44,600
62,400
84,000
108,800
20
10,600
20,200
32,600
50,400
68,400
94,000
122,200
30
11,200
21,600
36,600
55,200
76,800
105,800
138,600
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 square inch = 645.
16 m
2
, 1 British thermal unit per hour = 0.2931 W.
a.
The first six minimum permanent free 
openings (8 to 51 square inches) correspond approximately to the cross
-
sectional areas of chimneys having 
diameters of 3 through 8 inches, respectively. The 64
-
square
-
inch opening corresponds to the cross
-
sectional area of standard 8
-
inch by 8
-
inch 
chimney
tile.
SECTION FGC 635
GASEOUS HYDROGEN SYSTEMS
635.1 Installation.
The installation of gaseous hydrogen systems shall be in accordance with the applicable require-
ments of the 
New York City
Fire Code
, the 
New York City
Building Code
, and Chapter 7 of this 
code
.
SECTION FGC 636
OUTDOOR DECORATIVE APPLIANCES
636.1 General.
Permanently fixed
-
in
-
place outdoor decorative appliances shall be tested in accordance with ANSI 
Z21.97
/CSA 2.41
and shall be installed in accordance with the manufacturer’s instructions.