Gas Furnace Roof Vent
The air is then vented outside through a b vent pipe which is set vertically to expel combustion air through the roof.
Gas furnace roof vent. Adhere to them even if you are building the vent on your own. Hold the vent pipe still and turn. Gases produced during combustion are very hot and as such easily rise through the flue. A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace.
Remove the screws holding the termination cap on the end of the vent pipe using the correct size screwdriver to. When the vent is withdrawing air from the house it expels the gas outside through the vent. Vents must be tall enough so burned gases exit above a roof line and cannot filter back into a house. Type b vents are a standard design that most modern gas furnaces use.
The diameter of the vent pipe should always be larger than that of the gas furnace flue ensuring that no gas escapes from the pipe. Grip the vent pipe with one hand and the termination cap with the other hand. All gas furnaces must be vented to allow exhaust gases from the combustion process to escape. It draws air from within the house for combustion.
Also known as the type b this vent is operating on the natural air convection. Gas furnaces usually come with their own specifications. The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber.