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more heat out of the hot blast furnaces.

Discussion in 'Non-EPA Woodstoves and Fireplaces' started by Zachb91, Feb 3, 2017.

  1. Zachb91

    Zachb91

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    Mines only puts about 65 to 70 degree heat out the duct work. Granted it is in a shed attached to my house uninsulated would insulation help it put out more heat?

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  2. Zachb91

    Zachb91

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    Would it being ran in flex duct make a difference mind you all this was free so I just put it in the back room. Eventually I'll put it in the basement.

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  3. chris

    chris

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    What is the return intake being fed by? from in the house or just outside air? Best way to run that is with the return hooked to cold air return of the house. Pulling outside air and forcing that into the house isn't going to work to well- un-insulated duck work -just heating the outside.
     
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  4. Zachb91

    Zachb91

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    It's pulling the air from outside around the stove. I'm using insulated flex duct

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  5. fox9988

    fox9988

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    This is super inefficient.
     
  6. Zachb91

    Zachb91

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    Only place I got right now. Gonna try an save the money an put it in the basement. This year

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  7. chris

    chris

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    When you move it to basement hook the cold air return system of the home to the heat ex-changer intake. not doing that will give very poor preformance although world better than your current set up. Likely have to make a connection box of some type to do that. You will also need to add a back draft damper to the hot side between the reg furnace and the hot blast. Should be able to find a manual on line for the hot blast.
     
  8. brenndatomu

    brenndatomu

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    So there is no return air duct hooked up? Yeah that will drop your air temps for sure. Get a return duct on there, it needs to be same size or preferably bigger than the supply duct. So if you have (2) 8" supply ducts. that's ~100 sq inches, so (1) 12" return duct would work (113 sq in.) And yeah, insulating that shed would help.
     
  9. Zachb91

    Zachb91

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    Ok I'll try that.

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  10. Zachb91

    Zachb91

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    Ok right now the I have 1 duct blocked off put plan on running both down in to the basement. Then running 1 to the kids room and 1 to are bedroom.

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  11. Zachb91

    Zachb91

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    [​IMG]

    Ignore the mess but here's my setup right now.

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  12. brenndatomu

    brenndatomu

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    Don't load more than about half a load of wood in it with using only one supply duct, you'll get things glowing red inside...literally...not good! There is just not enough air flow there to cool the firebox. You'll get much more heat out of it by using both ducts too...and hooking up the return air as mentioned earlier.
    Also, if you can get at least inside the window before going to flex, it would be really good...you're actually not supposed to use flex on the supply duct of a solid fuel furnace at all...but if you can get 10-15' from the furnace, it would lessen the chance of melting it...which is going to blow toxic fumes all through your house, also not good!
    Saving money with wood heat is not worth burning the house down over, or making someone sick (or worse)!
     
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  13. Zachb91

    Zachb91

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    My plan is to run both ducts down out of steel duct work just gotta save up the money.

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