| CHAPTER 14 | |
| SOLAR SYSTEMS | |
| SECTION MC 1401 | |
| GENERAL | |
| 1401.1 Scope. | |
| This chapter shall govern the design, construction, installation, alteration and repair of systems, equip- | |
| ment and appliances intended to utilize solar energy for space heating or | |
| cooling, domestic hot water heating, swim- | |
| ming pool heating or process heating. | |
| 1401.2 Potable water supply. | |
| Potable water supplies to solar systems shall be protected against contamination in | |
| accordance with the | |
| New York City | |
| Plumbing Code | |
| . | |
| Exception: | |
| Wher | |
| e all solar system piping is a part of the potable water distribution system, in accordance with the | |
| requirements of the | |
| New York City | |
| Plumbing Code | |
| , and all components of the piping system are listed for potable | |
| water use, cross | |
| - | |
| connection protection meas | |
| ures shall not be required. | |
| 1401.3 Heat exchangers. | |
| Heat exchangers used in domestic water | |
| - | |
| heating systems shall be approved for the intended | |
| use. The system shall have adequate protection to ensure that the potability of the water supply and distribution | |
| system | |
| is properly safeguarded. | |
| 1401.4 Solar energy equipment and appliances. | |
| Solar energy equipment and appliances shall conform to the re- | |
| quirements of this chapter and shall be installed in accordance with the manufacturer’s instructions. | |
| 1401.5 Ducts. | |
| D | |
| ucts utilized in solar heating and cooling systems shall be constructed and installed in accordance | |
| with Chapter 6 of this code. | |
| SECTION | |
| MC | |
| 1402 | |
| INSTALLATION | |
| 1402.1 Access. | |
| Access shall be provided to solar energy equipment and appliances for maintenance. | |
| Solar systems | |
| and appurtenances shall | |
| be installed in accordance with the requirements of Chapter 5 of the | |
| New York City Fire | |
| Code | |
| regarding rooftop access and obstructions, and shall | |
| not obstruct or interfere with | |
| fire | |
| - | |
| fighting operations or | |
| the operation | |
| of any doors, windows | |
| , fire escapes, or other means of egress | |
| or other building components requiring | |
| operation or access. | |
| 1402.2 Protection of equipment. | |
| Solar equipment exposed to vehicular traffic shall be installed not less than 6 feet | |
| (1828.8 mm) abov | |
| e the finished floor. | |
| Exception: | |
| This section shall not apply where the equipment is protected from motor vehicle impact. | |
| 1402.3 Controlling condensation. | |
| Where attics or structural spaces are part of a passive solar system, ventilation of | |
| such spaces, as | |
| required by Section 406, is not required where other approved means of controlling condensation are | |
| provided. | |
| 1402.4 Roof | |
| - | |
| mounted collectors. | |
| Roof | |
| - | |
| mounted solar collectors that also serve as a roof covering shall conform to | |
| the requirements for roof coveri | |
| ngs in accordance with the | |
| New York City | |
| Building Code | |
| . | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the require- | |
| ments for plastic roof panels in the | |
| New York City | |
| Building Code | |
| . | |
| 1402.4.1 Collector | |
| s mounted above the roof. | |
| Where mounted on or above the roof covering, the collector array | |
| and supporting construction shall be constructed of noncombustible materials or fire | |
| - | |
| retardant | |
| - | |
| treated wood con- | |
| forming to the | |
| New York City | |
| Building Cod | |
| e to the exte | |
| nt required for the type of roof construction of the building | |
| to which the collectors are accessory. | |
| SOLAR SYSTEMS | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the | |
| requirements for plastic roof panels in the | |
| Ne | |
| w York City | |
| Building Code | |
| . | |
| 1402.5 Equipment. | |
| The solar energy system shall be equipped in accordance with the requirements of Sections | |
| 1402.5.1 through 1402.5.4. | |
| 1402.5.1 Pressure and temperature. | |
| Solar energy system components containing pressurized fluids shall be pro- | |
| tected against pressures and temperatures exceeding design limitations with a pressure and temperature relief valve. | |
| Each section of the system in which excessive pressures are capabl | |
| e of developing shall have a relief device located | |
| so that a section cannot be valved off or otherwise isolated from a relief device. Relief valves shall comply with | |
| the requirements of Section 1006.4 and discharge in accordance with Section 1006.6. | |
| 1402.5 | |
| .2 Vacuum. | |
| The solar energy system components that are subjected to a vacuum while in operation or during | |
| shutdown shall be designed to withstand such vacuum or shall be protected with vacuum relief valves. | |
| 1402.5.3 Protection from freezing. | |
| System compone | |
| nts shall be protected from damage by freezing of heat trans- | |
| fer liquids at the lowest ambient temperatures that will be encountered during the operation of the system. | |
| 1402.5.4 Expansion tanks. | |
| Liquid single | |
| - | |
| phase solar energy systems shall be equipped wit | |
| h expansion tanks sized | |
| in accordance with Section 1009. | |
| 1402.6 Penetrations. | |
| Roof and wall penetrations shall be flashed and sealed to prevent entry of water, rodents and | |
| insects. | |
| 1402.7 Filtering. | |
| Air transported to occupied spaces through rock or dust | |
| - | |
| p | |
| roducing materials by means other than | |
| natural convection shall be filtered at the outlet from the heat storage system. | |
| SECTION | |
| MC | |
| 1403 | |
| HEAT TRANSFER FLUIDS | |
| 1403.1 Flash point. | |
| The flash point of the actual heat transfer fluid utilized in a solar system sh | |
| all be not less than | |
| 50°F (10°C) above the design maximum nonoperating (no | |
| - | |
| flow) temperature of the fluid attained in the collector. | |
| 1403.2 Flammable gases and liquids. | |
| A flammable liquid or gas shall not be utilized as a heat transfer fluid. | |
| SECTION | |
| MC | |
| 1404 | |
| MATERIALS | |
| 1404.1 Collectors. | |
| Factory | |
| - | |
| built collectors shall be listed and labeled, and bear a label showing the manufacturer’s | |
| name and address, model number, collector dry weight, collector maximum allowable operating and nonoperating | |
| temp | |
| eratures and pressures, minimum allowable temperatures and the types of heat transfer fluids that are compatible | |
| with the collector. The label shall clarify that these specifications apply only to the collector. | |
| 1404.1.1 Types of collectors. | |
| The following | |
| types of collectors may be installed: | |
| 1. | |
| Flat | |
| - | |
| plate collectors. | |
| 2. | |
| Evacuated | |
| - | |
| tube collectors. | |
| 3. | |
| Integral collector storage systems. | |
| 4. | |
| Alternative collectors as approved by the commissioner in accordance with Section 28 | |
| - | |
| 113.2 of the | |
| Admin- | |
| istrative Code | |
| . | |
| 1 | |
| 404.2 Thermal storage units. | |
| Pressurized thermal storage units shall be listed and labeled, and bear a label showing | |
| the manufacturer’s name and address, model number, serial number, storage unit maximum and minimum allowable | |
| operating temperatures, storag | |
| e unit maximum and minimum allowable operating pressures and the types of heat | |
| transfer fluids compatible with the storage unit. The label shall clarify that these specifications apply only to the | |
| thermal storage unit. | |
| CHAPTER 14 | |
| SOLAR SYSTEMS | |
| SECTION MC 1401 | |
| GENERAL | |
| 1401.1 Scope. | |
| This chapter shall govern the design, construction, installation, alteration and repair of systems, equip- | |
| ment and appliances intended to utilize solar energy for space heating or | |
| cooling, domestic hot water heating, swim- | |
| ming pool heating or process heating. | |
| 1401.2 Potable water supply. | |
| Potable water supplies to solar systems shall be protected against contamination in | |
| accordance with the | |
| New York City | |
| Plumbing Code | |
| . | |
| Exception: | |
| Wher | |
| e all solar system piping is a part of the potable water distribution system, in accordance with the | |
| requirements of the | |
| New York City | |
| Plumbing Code | |
| , and all components of the piping system are listed for potable | |
| water use, cross | |
| - | |
| connection protection meas | |
| ures shall not be required. | |
| 1401.3 Heat exchangers. | |
| Heat exchangers used in domestic water | |
| - | |
| heating systems shall be approved for the intended | |
| use. The system shall have adequate protection to ensure that the potability of the water supply and distribution | |
| system | |
| is properly safeguarded. | |
| 1401.4 Solar energy equipment and appliances. | |
| Solar energy equipment and appliances shall conform to the re- | |
| quirements of this chapter and shall be installed in accordance with the manufacturer’s instructions. | |
| 1401.5 Ducts. | |
| D | |
| ucts utilized in solar heating and cooling systems shall be constructed and installed in accordance | |
| with Chapter 6 of this code. | |
| SECTION | |
| MC | |
| 1402 | |
| INSTALLATION | |
| 1402.1 Access. | |
| Access shall be provided to solar energy equipment and appliances for maintenance. | |
| Solar systems | |
| and appurtenances shall | |
| be installed in accordance with the requirements of Chapter 5 of the | |
| New York City Fire | |
| Code | |
| regarding rooftop access and obstructions, and shall | |
| not obstruct or interfere with | |
| fire | |
| - | |
| fighting operations or | |
| the operation | |
| of any doors, windows | |
| , fire escapes, or other means of egress | |
| or other building components requiring | |
| operation or access. | |
| 1402.2 Protection of equipment. | |
| Solar equipment exposed to vehicular traffic shall be installed not less than 6 feet | |
| (1828.8 mm) abov | |
| e the finished floor. | |
| Exception: | |
| This section shall not apply where the equipment is protected from motor vehicle impact. | |
| 1402.3 Controlling condensation. | |
| Where attics or structural spaces are part of a passive solar system, ventilation of | |
| such spaces, as | |
| required by Section 406, is not required where other approved means of controlling condensation are | |
| provided. | |
| 1402.4 Roof | |
| - | |
| mounted collectors. | |
| Roof | |
| - | |
| mounted solar collectors that also serve as a roof covering shall conform to | |
| the requirements for roof coveri | |
| ngs in accordance with the | |
| New York City | |
| Building Code | |
| . | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the require- | |
| ments for plastic roof panels in the | |
| New York City | |
| Building Code | |
| . | |
| 1402.4.1 Collector | |
| s mounted above the roof. | |
| Where mounted on or above the roof covering, the collector array | |
| and supporting construction shall be constructed of noncombustible materials or fire | |
| - | |
| retardant | |
| - | |
| treated wood con- | |
| forming to the | |
| New York City | |
| Building Cod | |
| e to the exte | |
| nt required for the type of roof construction of the building | |
| to which the collectors are accessory. | |
| SOLAR SYSTEMS | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the | |
| requirements for plastic roof panels in the | |
| Ne | |
| w York City | |
| Building Code | |
| . | |
| 1402.5 Equipment. | |
| The solar energy system shall be equipped in accordance with the requirements of Sections | |
| 1402.5.1 through 1402.5.4. | |
| 1402.5.1 Pressure and temperature. | |
| Solar energy system components containing pressurized fluids shall be pro- | |
| tected against pressures and temperatures exceeding design limitations with a pressure and temperature relief valve. | |
| Each section of the system in which excessive pressures are capabl | |
| e of developing shall have a relief device located | |
| so that a section cannot be valved off or otherwise isolated from a relief device. Relief valves shall comply with | |
| the requirements of Section 1006.4 and discharge in accordance with Section 1006.6. | |
| 1402.5 | |
| .2 Vacuum. | |
| The solar energy system components that are subjected to a vacuum while in operation or during | |
| shutdown shall be designed to withstand such vacuum or shall be protected with vacuum relief valves. | |
| 1402.5.3 Protection from freezing. | |
| System compone | |
| nts shall be protected from damage by freezing of heat trans- | |
| fer liquids at the lowest ambient temperatures that will be encountered during the operation of the system. | |
| 1402.5.4 Expansion tanks. | |
| Liquid single | |
| - | |
| phase solar energy systems shall be equipped wit | |
| h expansion tanks sized | |
| in accordance with Section 1009. | |
| 1402.6 Penetrations. | |
| Roof and wall penetrations shall be flashed and sealed to prevent entry of water, rodents and | |
| insects. | |
| 1402.7 Filtering. | |
| Air transported to occupied spaces through rock or dust | |
| - | |
| p | |
| roducing materials by means other than | |
| natural convection shall be filtered at the outlet from the heat storage system. | |
| SECTION | |
| MC | |
| 1403 | |
| HEAT TRANSFER FLUIDS | |
| 1403.1 Flash point. | |
| The flash point of the actual heat transfer fluid utilized in a solar system sh | |
| all be not less than | |
| 50°F (10°C) above the design maximum nonoperating (no | |
| - | |
| flow) temperature of the fluid attained in the collector. | |
| 1403.2 Flammable gases and liquids. | |
| A flammable liquid or gas shall not be utilized as a heat transfer fluid. | |
| SECTION | |
| MC | |
| 1404 | |
| MATERIALS | |
| 1404.1 Collectors. | |
| Factory | |
| - | |
| built collectors shall be listed and labeled, and bear a label showing the manufacturer’s | |
| name and address, model number, collector dry weight, collector maximum allowable operating and nonoperating | |
| temp | |
| eratures and pressures, minimum allowable temperatures and the types of heat transfer fluids that are compatible | |
| with the collector. The label shall clarify that these specifications apply only to the collector. | |
| 1404.1.1 Types of collectors. | |
| The following | |
| types of collectors may be installed: | |
| 1. | |
| Flat | |
| - | |
| plate collectors. | |
| 2. | |
| Evacuated | |
| - | |
| tube collectors. | |
| 3. | |
| Integral collector storage systems. | |
| 4. | |
| Alternative collectors as approved by the commissioner in accordance with Section 28 | |
| - | |
| 113.2 of the | |
| Admin- | |
| istrative Code | |
| . | |
| 1 | |
| 404.2 Thermal storage units. | |
| Pressurized thermal storage units shall be listed and labeled, and bear a label showing | |
| the manufacturer’s name and address, model number, serial number, storage unit maximum and minimum allowable | |
| operating temperatures, storag | |
| e unit maximum and minimum allowable operating pressures and the types of heat | |
| transfer fluids compatible with the storage unit. The label shall clarify that these specifications apply only to the | |
| thermal storage unit. | |
| CHAPTER 14 | |
| SOLAR SYSTEMS | |
| SECTION MC 1401 | |
| GENERAL | |
| 1401.1 Scope. | |
| This chapter shall govern the design, construction, installation, alteration and repair of systems, equip- | |
| ment and appliances intended to utilize solar energy for space heating or | |
| cooling, domestic hot water heating, swim- | |
| ming pool heating or process heating. | |
| 1401.2 Potable water supply. | |
| Potable water supplies to solar systems shall be protected against contamination in | |
| accordance with the | |
| New York City | |
| Plumbing Code | |
| . | |
| Exception: | |
| Wher | |
| e all solar system piping is a part of the potable water distribution system, in accordance with the | |
| requirements of the | |
| New York City | |
| Plumbing Code | |
| , and all components of the piping system are listed for potable | |
| water use, cross | |
| - | |
| connection protection meas | |
| ures shall not be required. | |
| 1401.3 Heat exchangers. | |
| Heat exchangers used in domestic water | |
| - | |
| heating systems shall be approved for the intended | |
| use. The system shall have adequate protection to ensure that the potability of the water supply and distribution | |
| system | |
| is properly safeguarded. | |
| 1401.4 Solar energy equipment and appliances. | |
| Solar energy equipment and appliances shall conform to the re- | |
| quirements of this chapter and shall be installed in accordance with the manufacturer’s instructions. | |
| 1401.5 Ducts. | |
| D | |
| ucts utilized in solar heating and cooling systems shall be constructed and installed in accordance | |
| with Chapter 6 of this code. | |
| SECTION | |
| MC | |
| 1402 | |
| INSTALLATION | |
| 1402.1 Access. | |
| Access shall be provided to solar energy equipment and appliances for maintenance. | |
| Solar systems | |
| and appurtenances shall | |
| be installed in accordance with the requirements of Chapter 5 of the | |
| New York City Fire | |
| Code | |
| regarding rooftop access and obstructions, and shall | |
| not obstruct or interfere with | |
| fire | |
| - | |
| fighting operations or | |
| the operation | |
| of any doors, windows | |
| , fire escapes, or other means of egress | |
| or other building components requiring | |
| operation or access. | |
| 1402.2 Protection of equipment. | |
| Solar equipment exposed to vehicular traffic shall be installed not less than 6 feet | |
| (1828.8 mm) abov | |
| e the finished floor. | |
| Exception: | |
| This section shall not apply where the equipment is protected from motor vehicle impact. | |
| 1402.3 Controlling condensation. | |
| Where attics or structural spaces are part of a passive solar system, ventilation of | |
| such spaces, as | |
| required by Section 406, is not required where other approved means of controlling condensation are | |
| provided. | |
| 1402.4 Roof | |
| - | |
| mounted collectors. | |
| Roof | |
| - | |
| mounted solar collectors that also serve as a roof covering shall conform to | |
| the requirements for roof coveri | |
| ngs in accordance with the | |
| New York City | |
| Building Code | |
| . | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the require- | |
| ments for plastic roof panels in the | |
| New York City | |
| Building Code | |
| . | |
| 1402.4.1 Collector | |
| s mounted above the roof. | |
| Where mounted on or above the roof covering, the collector array | |
| and supporting construction shall be constructed of noncombustible materials or fire | |
| - | |
| retardant | |
| - | |
| treated wood con- | |
| forming to the | |
| New York City | |
| Building Cod | |
| e to the exte | |
| nt required for the type of roof construction of the building | |
| to which the collectors are accessory. | |
| SOLAR SYSTEMS | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the | |
| requirements for plastic roof panels in the | |
| Ne | |
| w York City | |
| Building Code | |
| . | |
| 1402.5 Equipment. | |
| The solar energy system shall be equipped in accordance with the requirements of Sections | |
| 1402.5.1 through 1402.5.4. | |
| 1402.5.1 Pressure and temperature. | |
| Solar energy system components containing pressurized fluids shall be pro- | |
| tected against pressures and temperatures exceeding design limitations with a pressure and temperature relief valve. | |
| Each section of the system in which excessive pressures are capabl | |
| e of developing shall have a relief device located | |
| so that a section cannot be valved off or otherwise isolated from a relief device. Relief valves shall comply with | |
| the requirements of Section 1006.4 and discharge in accordance with Section 1006.6. | |
| 1402.5 | |
| .2 Vacuum. | |
| The solar energy system components that are subjected to a vacuum while in operation or during | |
| shutdown shall be designed to withstand such vacuum or shall be protected with vacuum relief valves. | |
| 1402.5.3 Protection from freezing. | |
| System compone | |
| nts shall be protected from damage by freezing of heat trans- | |
| fer liquids at the lowest ambient temperatures that will be encountered during the operation of the system. | |
| 1402.5.4 Expansion tanks. | |
| Liquid single | |
| - | |
| phase solar energy systems shall be equipped wit | |
| h expansion tanks sized | |
| in accordance with Section 1009. | |
| 1402.6 Penetrations. | |
| Roof and wall penetrations shall be flashed and sealed to prevent entry of water, rodents and | |
| insects. | |
| 1402.7 Filtering. | |
| Air transported to occupied spaces through rock or dust | |
| - | |
| p | |
| roducing materials by means other than | |
| natural convection shall be filtered at the outlet from the heat storage system. | |
| SECTION | |
| MC | |
| 1403 | |
| HEAT TRANSFER FLUIDS | |
| 1403.1 Flash point. | |
| The flash point of the actual heat transfer fluid utilized in a solar system sh | |
| all be not less than | |
| 50°F (10°C) above the design maximum nonoperating (no | |
| - | |
| flow) temperature of the fluid attained in the collector. | |
| 1403.2 Flammable gases and liquids. | |
| A flammable liquid or gas shall not be utilized as a heat transfer fluid. | |
| SECTION | |
| MC | |
| 1404 | |
| MATERIALS | |
| 1404.1 Collectors. | |
| Factory | |
| - | |
| built collectors shall be listed and labeled, and bear a label showing the manufacturer’s | |
| name and address, model number, collector dry weight, collector maximum allowable operating and nonoperating | |
| temp | |
| eratures and pressures, minimum allowable temperatures and the types of heat transfer fluids that are compatible | |
| with the collector. The label shall clarify that these specifications apply only to the collector. | |
| 1404.1.1 Types of collectors. | |
| The following | |
| types of collectors may be installed: | |
| 1. | |
| Flat | |
| - | |
| plate collectors. | |
| 2. | |
| Evacuated | |
| - | |
| tube collectors. | |
| 3. | |
| Integral collector storage systems. | |
| 4. | |
| Alternative collectors as approved by the commissioner in accordance with Section 28 | |
| - | |
| 113.2 of the | |
| Admin- | |
| istrative Code | |
| . | |
| 1 | |
| 404.2 Thermal storage units. | |
| Pressurized thermal storage units shall be listed and labeled, and bear a label showing | |
| the manufacturer’s name and address, model number, serial number, storage unit maximum and minimum allowable | |
| operating temperatures, storag | |
| e unit maximum and minimum allowable operating pressures and the types of heat | |
| transfer fluids compatible with the storage unit. The label shall clarify that these specifications apply only to the | |
| thermal storage unit. | |
| CHAPTER 14 | |
| SOLAR SYSTEMS | |
| SECTION MC 1401 | |
| GENERAL | |
| 1401.1 Scope. | |
| This chapter shall govern the design, construction, installation, alteration and repair of systems, equip- | |
| ment and appliances intended to utilize solar energy for space heating or | |
| cooling, domestic hot water heating, swim- | |
| ming pool heating or process heating. | |
| 1401.2 Potable water supply. | |
| Potable water supplies to solar systems shall be protected against contamination in | |
| accordance with the | |
| New York City | |
| Plumbing Code | |
| . | |
| Exception: | |
| Wher | |
| e all solar system piping is a part of the potable water distribution system, in accordance with the | |
| requirements of the | |
| New York City | |
| Plumbing Code | |
| , and all components of the piping system are listed for potable | |
| water use, cross | |
| - | |
| connection protection meas | |
| ures shall not be required. | |
| 1401.3 Heat exchangers. | |
| Heat exchangers used in domestic water | |
| - | |
| heating systems shall be approved for the intended | |
| use. The system shall have adequate protection to ensure that the potability of the water supply and distribution | |
| system | |
| is properly safeguarded. | |
| 1401.4 Solar energy equipment and appliances. | |
| Solar energy equipment and appliances shall conform to the re- | |
| quirements of this chapter and shall be installed in accordance with the manufacturer’s instructions. | |
| 1401.5 Ducts. | |
| D | |
| ucts utilized in solar heating and cooling systems shall be constructed and installed in accordance | |
| with Chapter 6 of this code. | |
| SECTION | |
| MC | |
| 1402 | |
| INSTALLATION | |
| 1402.1 Access. | |
| Access shall be provided to solar energy equipment and appliances for maintenance. | |
| Solar systems | |
| and appurtenances shall | |
| be installed in accordance with the requirements of Chapter 5 of the | |
| New York City Fire | |
| Code | |
| regarding rooftop access and obstructions, and shall | |
| not obstruct or interfere with | |
| fire | |
| - | |
| fighting operations or | |
| the operation | |
| of any doors, windows | |
| , fire escapes, or other means of egress | |
| or other building components requiring | |
| operation or access. | |
| 1402.2 Protection of equipment. | |
| Solar equipment exposed to vehicular traffic shall be installed not less than 6 feet | |
| (1828.8 mm) abov | |
| e the finished floor. | |
| Exception: | |
| This section shall not apply where the equipment is protected from motor vehicle impact. | |
| 1402.3 Controlling condensation. | |
| Where attics or structural spaces are part of a passive solar system, ventilation of | |
| such spaces, as | |
| required by Section 406, is not required where other approved means of controlling condensation are | |
| provided. | |
| 1402.4 Roof | |
| - | |
| mounted collectors. | |
| Roof | |
| - | |
| mounted solar collectors that also serve as a roof covering shall conform to | |
| the requirements for roof coveri | |
| ngs in accordance with the | |
| New York City | |
| Building Code | |
| . | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the require- | |
| ments for plastic roof panels in the | |
| New York City | |
| Building Code | |
| . | |
| 1402.4.1 Collector | |
| s mounted above the roof. | |
| Where mounted on or above the roof covering, the collector array | |
| and supporting construction shall be constructed of noncombustible materials or fire | |
| - | |
| retardant | |
| - | |
| treated wood con- | |
| forming to the | |
| New York City | |
| Building Cod | |
| e to the exte | |
| nt required for the type of roof construction of the building | |
| to which the collectors are accessory. | |
| SOLAR SYSTEMS | |
| Exception: | |
| The use of plastic solar collector covers shall be limited to those approved plastics meeting the | |
| requirements for plastic roof panels in the | |
| Ne | |
| w York City | |
| Building Code | |
| . | |
| 1402.5 Equipment. | |
| The solar energy system shall be equipped in accordance with the requirements of Sections | |
| 1402.5.1 through 1402.5.4. | |
| 1402.5.1 Pressure and temperature. | |
| Solar energy system components containing pressurized fluids shall be pro- | |
| tected against pressures and temperatures exceeding design limitations with a pressure and temperature relief valve. | |
| Each section of the system in which excessive pressures are capabl | |
| e of developing shall have a relief device located | |
| so that a section cannot be valved off or otherwise isolated from a relief device. Relief valves shall comply with | |
| the requirements of Section 1006.4 and discharge in accordance with Section 1006.6. | |
| 1402.5 | |
| .2 Vacuum. | |
| The solar energy system components that are subjected to a vacuum while in operation or during | |
| shutdown shall be designed to withstand such vacuum or shall be protected with vacuum relief valves. | |
| 1402.5.3 Protection from freezing. | |
| System compone | |
| nts shall be protected from damage by freezing of heat trans- | |
| fer liquids at the lowest ambient temperatures that will be encountered during the operation of the system. | |
| 1402.5.4 Expansion tanks. | |
| Liquid single | |
| - | |
| phase solar energy systems shall be equipped wit | |
| h expansion tanks sized | |
| in accordance with Section 1009. | |
| 1402.6 Penetrations. | |
| Roof and wall penetrations shall be flashed and sealed to prevent entry of water, rodents and | |
| insects. | |
| 1402.7 Filtering. | |
| Air transported to occupied spaces through rock or dust | |
| - | |
| p | |
| roducing materials by means other than | |
| natural convection shall be filtered at the outlet from the heat storage system. | |
| SECTION | |
| MC | |
| 1403 | |
| HEAT TRANSFER FLUIDS | |
| 1403.1 Flash point. | |
| The flash point of the actual heat transfer fluid utilized in a solar system sh | |
| all be not less than | |
| 50°F (10°C) above the design maximum nonoperating (no | |
| - | |
| flow) temperature of the fluid attained in the collector. | |
| 1403.2 Flammable gases and liquids. | |
| A flammable liquid or gas shall not be utilized as a heat transfer fluid. | |
| SECTION | |
| MC | |
| 1404 | |
| MATERIALS | |
| 1404.1 Collectors. | |
| Factory | |
| - | |
| built collectors shall be listed and labeled, and bear a label showing the manufacturer’s | |
| name and address, model number, collector dry weight, collector maximum allowable operating and nonoperating | |
| temp | |
| eratures and pressures, minimum allowable temperatures and the types of heat transfer fluids that are compatible | |
| with the collector. The label shall clarify that these specifications apply only to the collector. | |
| 1404.1.1 Types of collectors. | |
| The following | |
| types of collectors may be installed: | |
| 1. | |
| Flat | |
| - | |
| plate collectors. | |
| 2. | |
| Evacuated | |
| - | |
| tube collectors. | |
| 3. | |
| Integral collector storage systems. | |
| 4. | |
| Alternative collectors as approved by the commissioner in accordance with Section 28 | |
| - | |
| 113.2 of the | |
| Admin- | |
| istrative Code | |
| . | |
| 1 | |
| 404.2 Thermal storage units. | |
| Pressurized thermal storage units shall be listed and labeled, and bear a label showing | |
| the manufacturer’s name and address, model number, serial number, storage unit maximum and minimum allowable | |
| operating temperatures, storag | |
| e unit maximum and minimum allowable operating pressures and the types of heat | |
| transfer fluids compatible with the storage unit. The label shall clarify that these specifications apply only to the | |
| thermal storage unit. |