franco b wrote:Something strong enough to hold the power vent will dictate what you use. i would not use sheetrock.
Pipes should not need to be airtight assuming that the power vent goes at the end of the pipe outside. If it mounts at the stoker then it is called a direct vent and the pipes should be sealed. You will need a manometer to set draft and your vacuum gauge is not sensitive enough. Dwyer Mark II model 25, about $25 at Amazon.
The damper would depend on the type of vent.
Others more familiar with that stoker can better answer further questions.
I have some Duroc that I can use, and caulk around it.
The powervent is to be mounted on the outside of the window, so I'm hoping that I can just leave the pipe sitting on top of the Pocono flue outlet with some 600 degree caulk.
Ordering the Dwyer tonight.
I'll hold off on the damper until I hear some more.
Meanwhile I can get started.