Also known as the type b this vent is operating on the natural air convection.
Pvc furnace roof vent.
That way should there be a problem with the furnace that causes the exhaust temperature to exceed design the exhaust vent system has almost 40 more capacity to handle the excess heat before it reaches the point where it can fail.
Basic instructions on how to run pvc flue venting on high efficiency furnaces.
The black finish helps this vent blend into your home s rooftop.
This type is an ideal alternative to natural vent systems.
It s made of zinc coated galvanized steel for durability and reliability.
The patented new flue cap is designed to improve air flow and eliminate excessive moisture and debris that can rust or damage high efficiency gas furnaces tankless hot water tanks plumbing or other pvc vented installations.
When the vent is withdrawing air from the house it expels the gas outside through the vent.
This vent features a heavy duty screen which helps protect against small animals from entering your home through the vent.
This piping system incorporates two pipes of different sizes in one unit.
Despite the confusion the safe practice would suggest the use of pvc schedule 40 pipes for the air intake vent on the furnace and cpvc for the exhaust flue vent given its higher service temperature.
This vent is designed to be used on 4 in.