Thanks to the ingenious two layer design that keeps the outside of the pipe relatively cool the vents from direct vent fireplaces can run straight out through the wall or up through the roof allowing great flexibility in design and placement of the fireplace.
Installing direct vent fireplace through roof.
For instance superior direct vent gas appliances will have the vertical flue collar covered by a plate and the back collar covered by a cap.
In terms of versatility you can vent a direct vent fireplace horizontally or through the roof.
Direct vent fireplaces are best for newer more air tight homes.
Almost all gas vent pipes will use a twist lock attachment method.
You can go with a horizontal flue wherein the vent goes through a wall to the outside or a vertical flue where the vent goes up through the roof like a chimney.
Set fireplace in its desired location and determine route your horizontal venting will take.
Gas fireplace direct vent termination cap clearance distances clearances between the gas fireplace exhaust vent and other building components or features.
Installing the flue is one of the most important jobs when you plan to install a direct vent fireplace.
For shingles the trailing edge of the flashing base should sit on top.
When passing through the roof you need to use a flashing that matches the roof pitch.
In this video i start my diy fireplace by installing a flexible direct vent system through the wall behind the fireplace watch the next episode https y.
Do not secure fireplace until all venting has been installed.
Use whatever works best for you depending on the available space in your.
Finally determine how you ll get the vent from the fireplace to the outdoors.
Depending on how you are venting the appliance you may need to uncover or rotate the venting collar on the appliance for your application.
Combustion air enters through the outer pipe and the inner pipe acts as the vent for hot gases.
If you are venting the appliance vertically you ll need to remove the plate and discard the insulation and pipe plug within.
The vent pipe can terminate through a wall or a roof.
They can be installed almost anywhere.
This article gives typical clearance distance requirements between the termination cap of a gas fireplace or fireplace insert and other building or site features such as windows doors other mechanical system components air intakes.
Nail the flashing in place right after you put down the tar paper or weather membrane.
From a heating standpoint a direct vent fireplace will be around 70 85 efficient.