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Real quick question on 6" stove pipe damper.

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by buckwheat12n, Sep 6, 2006.

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  1. buckwheat12n

    buckwheat12n New Member

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    Forgive me for asking, I'm sure this is a dumb question but I have to ask.....I'm installing 6" stove pipe for my wood furnace. I got a 6" piece of double walled stove pipe/damper and I'm trying to figure out how smoke doesn't leak out the sides of it once it's installed. Whats to keep the smoke from coming out of the two holes they drill to install the damper in the pipe? Am I supposed to seal these up somehow?

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  2. Shane

    Shane Minister of Fire

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    It can come out if draft is not sufficient. If you have good draft the smoke will be drawn straight up the chimney and not have to find other places to leak out. If your not using the damper and the holes are just open you can fill them in with furnace cement or you can put sheet metal screws in to plug up the holes.
  3. BrotherBart

    BrotherBart Hearth.com LLC Mid-Atlantic Division Staff Member

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    If your chimney drafts properly smoke coming out the space around the damper shaft won't be a problem. You will have some unheated air making its way into the flue from the space around the shaft but if the furnace is cranking it won't dilute the heated draft much.

    Why are you using double wall pipe inside the basement? Single wall is fine up to the connection to a combustible wall or chimney. And releases additional heat into the room.

    What is the chimney setup for that furnace?
  4. Shane

    Shane Minister of Fire

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    But the double wall will retain heat to ensure proper and/or better chimney draft.
  5. BrotherBart

    BrotherBart Hearth.com LLC Mid-Atlantic Division Staff Member

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    Ageed. That is why I wondered what the total chimney setup is. Retaining that heat is pretty much an issue just until the flue is up to temp. After that it only matters how hot the main run of the chimney is. That is where the draft will be coming from for the rest of the burn.
  6. Shane

    Shane Minister of Fire

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    I would agree with that except in a situation where there is more than 8-10' of connector. I always have to clean those stoves 2 times per year where the double wall guys are 1 timers.
  7. BrotherBart

    BrotherBart Hearth.com LLC Mid-Atlantic Division Staff Member

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    Do you find that with the straight up single wall connectors to double wall through the roof too Shane?
  8. Robbie

    Robbie Minister of Fire

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    Shane, could you explain why 1 time for double, and what kind of stove/pipe again takes 2 ? Thanks.

    Edit: I have double wall black from stove almost to wall, then double wall stainless out through wall and all the up the side of the house.


    Robbie
  9. Shane

    Shane Minister of Fire

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    The ones I have to clean twice per year are the ones with large vaulted ceilings and 10+ feet of single wall (Not necesarily every one). The pipe loses alot of heat and does build up more when compared to other stoves in similar installations using double wall stove pipe. On older stoves where more of the heat is lost up the flue this is not as prevalent but with a 70+ efficient stove you can see huge difference.
  10. Robbie

    Robbie Minister of Fire

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    Thanks, that helps a lot. :)

    Robbie
  11. buckwheat12n

    buckwheat12n New Member

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    Ah, Ok. Thanks for the info. My main reason for double wall is my kids sometimes play in the basement and I thought the double wall pipe would reduce the chance of them getting burned if they touched the pipe.
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