Chimney for wood stove


Old 01-14-08, 11:10 AM
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Chimney for wood stove

Going out through my wall and straight up...But I have a small soffit thats at peak of roof..Am I allowed to angle the outside chimney pipe at all or must it be straight all the way up?
Old 05-06-08, 01:39 AM
Join Date: Apr 2008
Location: Fox, Alaska
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According to my Vermont Castings manual:

1. Best performance is obtained by having 16' (connector pipe plus chimney) above the flue collar

2. Straight up is best

3. No pipe or flue expansions, i.e. same diameter all the way up

4. If you use elbows, then the horizontal section should incline at 1/4" per foot of horizontal section.

The reason for the slight incline on horizontal sections is for condensation. Wood had moisture and the route that the smoke goes through is cooler than the stove want condensation to be able to run downhill back to the stove. This is also why pipe sections are installed so that upper sections fit into lower sections. The draft will keep the smoke out of the room.


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