Stove Ductwork

[jjgrappler]

I am getting a new coal stoker stove delivered at the end of the week. My old stove I had to heat the air and let it rise out of my basement and through my house. It worked but not efficiently. My new stove has a 8 inch duct ring cut into it. Question is what do I need to know to install rigid 8 inch ductwork? Should I tape the seams after I screw them together. I am getting conflicting reports on floor register placement. Some people say heating registers on interior walls and cold air returns under windows. While others state heating registers under windows to prevent drafts. I am only putting two registers in but want it to be as efficient as possible. Any help is appreciated.

 

[alwaysFlOoReD]

I've always seen heat registers under windows and returns on inside walls.

 

[6768rogues]

I've always seen heat registers under windows and returns on inside walls.

That seems to be the modern way. 50 years ago it was the opposite.

 

[tab2]

Use tape or brush on duct seal at joints. Returns towards the middle and diffusers on perimeter walls/windows.

 

[Bretny]

Personaly i would try not useing any duct work first. I run a wood stove for my primary heat. Put a fan blowing cold air down the basement steps. Hot air rises to let it rise by its self. Also forcing hot air anywhere with a fan will cool it.

I would only use the duct work to get hot air to a distant area of the house.

 

[Jackfre]

I built a wood boiler for my father years ago. We built a sheet metal surround and piped it up to a 2x2 floor register in the hall way and it was just gravity fed. It would blow you out of the house in short order. That one also ran the baseboard. There are a lot of ways you can go on this. With the 8" you can attach it and see how the gravity operates. If it needs some help you could go with a Fan tech in line fan. They are good and quiet. You could also go to a remote (from where the 8"riser comes up) area and cut a floor grill through to the basement. The air wants to move. You just need to give it a path to do so. I no longer am a fan of using basement air to heat the upstairs. I would suggest a radon test prior to doing this. You may as well know what is there. Sitting on top of a coal stove I think you will have such velocity up the 8" stack that sealing won't be much of an issue. Coal heats like hell, but can make mass quantities of CO. Get a CO detector upstairs and down. Safety first.

 

[jjgrappler]

I have co and smoke detectors on each floor. This is replacing a stove that I just used an open basement door to circulate

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[jjgrappler]

I am upgrading to a stoker 2 from alaska with the upgraded fan blower. My longest run will be maybe 20 feet for the ductwork so I am not concerned with losing any heat from the fan blowing it.

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[Bretny]

You will loose heat any time you move it fast.