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// CODE SNIPPET

509.4.3 Special Gas Vents

2021 Oregon Plumbing Specialty Code > 5 Water Heaters > 509.0 Venting of Appliances > 509.4 Type of Venting System to Be Used > 509.4.3 Special Gas Vents
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Special gas vents shall be listed and labeled in accordance with UL 1738 and installed in accordance with the special gas vent manufacturer's installation instructions. [NFPA 54:12.5.4]

Related Code Sections


509.4.3 Water Heaters, Special Gas Vents
Special gas vents shall be listed and labeled in accordance with UL 1738 and installed in accordance with the special gas vent manufacturer's ...
2021 Oregon Plumbing Specialty Code > 5 Water Heaters > 509.0 Venting of Appliances > 509.4 Type of Venting System to Be Used > 509.4.3 Special Gas Vents
G2427.4.2 Fuel Gas, (503.4.2) Special Gas Vent
Special gas vent shall be listed and labeled in accordance with UL 1738 and installed in accordance with the special gas vent manufacturer's ...
2021 Oregon Residential Specialty Code (ORSC) > 24 Fuel Gas > G2427 (503) Venting of Appliances > G2427.4 (503.4) Type of Venting System to Be Used > G2427.4.2 (503.4.2) Special Gas Vent
G2427.3.5 Fuel Gas, (503.3.6) Above-Ceiling Air-Handling Spaces
shall conform to one of the following requirements: The venting system shall be a listed special gas vent; other venting system serving ...
2021 Oregon Residential Specialty Code (ORSC) > 24 Fuel Gas > G2427 (503) Venting of Appliances > G2427.3 (503.3) Design and Construction > G2427.3.5 (503.3.6) Above-Ceiling Air-Handling Spaces
509.3.6 Water Heaters, Above-Ceiling or Nonducted Air Handling System
of the following requirements: The venting system shall be a listed special gas vent, other system serving a Category III or Category IV appliance ...
2021 Oregon Plumbing Specialty Code > 5 Water Heaters > 509.0 Venting of Appliances > 509.3 Minimum Safe Performance > 509.3.6 Above-Ceiling or Nonducted Air Handling System
G2407.11 Fuel Gas, (304.11) Combustion Air Ducts
air ducts shall not slope downward toward the source of combustion air . The remaining space surrounding a chimney liner, gas vent, special gas ...
2021 Oregon Residential Specialty Code (ORSC) > 24 Fuel Gas > G2407 (304) Combustion, Ventilation and Dilution Air > G2407.11 (304.11) Combustion Air Ducts
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