Natural Gas Vent Roof

Gas vents that are 12 inches 305 mm or less in size and located not less than 8 feet 2438 mm from a vertical wall or similar obstruction shall terminate above the roof in accordance with figure 503 6 4.

Natural gas vent roof.

This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. When the vent is withdrawing air from the house it expels the gas outside through the vent. Aluminum 012 inner wall galvanized 018 outer wall. Gas vents that are over 12 inches 305 mm in size or are located less than 8 feet 2438 mm from a vertical wall or similar obstruction shall terminate not less than 2 feet 610 mm above the highest point where they pass through the roof and not less than 2 feet 610.

Use with natural gas or liquid propane category i and draft hood equipped appliances and appliances tested and listed to use type b gas vent. Above the roof surface with a listed cap or listed roof assembly. Materials and construction round type b gas vent 3 8 and oval 4 6. Gas vents that are 12 inches 305 mm or less in size and located not less than 8 feet 2438 mm from a vertical wall or similar obstruction shall terminate above the roof in accordance with figure 802 6 2 and table 802 6 2.

Duravent s type b gas vent system. Kits in this category include those designed for natural draft appliances using gas oil or wood. Also known as the type b this vent is operating on the natural air convection. As well as those suitable for category i gas fired appliances with b vent or appliances with a draft hood.

Natural gas fireplaces gas fired furnaces boilers water heaters and wall or space heating applications. A gas vent shall terminate in accordance with one of the following.