Gas Furnace Vent Above Roof

Metal b vent chimney clearance distances above and on the roof.

Gas furnace vent above roof. The different types of venting. For many homes a gas furnace is the preferred heating device it has proven to be an efficient and reliable way of meeting household heating needs over the years. Gas vents 12 inches 305 mm in size or smaller with listed caps shall be permitted to be terminated in accordance with figure g2427 6 5 provided that such vents are at least 8 feet 2438 mm from a vertical. If your furnace has an afue rating of 90 percent or above it will have a flue pipe that goes out of the side of your house.

Above the roof surface with a listed cap or listed roof assembly. Always replace a gas furnace s roof vent with a compatible flue pipe storm collar and termination cap. Vents must be tall enough so burned gases exit above a roof line and cannot filter back into a house. All gas furnaces must be vented to allow exhaust gases from the combustion process to escape.

When we are talking about gas furnace vent pipe code we need to talk about the different types of the vents first after all you want to keep your family safe from harm. Vents can also be terminated above the roof. The inner liner carries the furnace s exhaust fumes outside and the outer liner insulates and protects the inner liner. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation.

It s made of zinc coated galvanized steel for durability and reliability. Well making sure that you choose the right venting style will protect them. It provides a vent pipe for exhaust gases but uses unconditioned not cooled or heated air from the space around the furnace for combustion air. Goose neck vent the master flow 6 in.

A gas vent shall terminate in accordance with one of the following. This article series describes b vent metal chimneys used for gas fired appliances. This vent is designed to be used on 6 in. We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys.

The master flow 6 in. A gas furnace uses a double wall flue pipe for its vent. The single pipe non direct vent system is used where there is no real need for a separate combustion air intake vent.