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venting through thick wall

Post in 'The Pellet Mill - Pellet and Multifuel Stoves' started by serveprotect, Oct 6, 2012.

  1. serveprotect

    serveprotect Member

    Joined:
    Sep 26, 2012
    Messages:
    81
    Will soon be installing quad mt vernon. My dealer ordered me a 12 inch horizontal pipe which will go thru the wall and then connect to a 5 ft vertical on ext wall. Have not started install yet but the wall is a solid 12 inches alone and i believe i need to be 6 inches from ext wall for the vertical piece. What are my options here. Using duravent with orange seal. Was at lowes lookin for extension pieces and they had duravent with rope. Not sure if compatible. Also do i need to be sealing, screwing together pipe? Thanks this wil be first stove.

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  2. Buc White

    Buc White New Member

    Joined:
    Sep 13, 2012
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    Connecticut
    i just had a quad classic bay installed this season and to my knowledge, the reason for the 5 ft verticle piece is because you have combustables in the area. I took out a bush and replanted it in the backyard and laid down some nice rock after taking out the mulch. The vent pipe comes straight out of my 15 inch thick foundation and angles down at a 45 degree angle about 15 inches above the rock. the vent pipe is no more than 1 ft out of the foundation. Not an eye sore at all.Do you want that large piece coming up?
  3. tsmith

    tsmith Minister of Fire

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    Kutztown, PA
    I would probably use a piece of 24" for the vertical. 12" certainly will not work if your wall is 12". Also you will want the stove away from the wall according to the listed clearances as well as to have room to work in the back. My Mt. Vernon is a corner install so I have a 45 degree bend on the stove then a 24" piece going through the wall. I sealed my dura vent with high temp silicone.
  4. serveprotect

    serveprotect Member

    Joined:
    Sep 26, 2012
    Messages:
    81
    I do plan on keeping the 5 ft vertical. It is out back of house and not too worried about asthetics. My main question is on how much pipe i need to run on piece thru wall. I was unsure if i could attach another 12 in piece to current piece or get a larger piece such as 24 as suggested. Also how does that hopper lid sit on top?? I guess it just rests on there to seal but there is not really anything to line up with???
  5. serveprotect

    serveprotect Member

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    A few more questions maybe u guys can help me out. It looks like the thimble will be a tad short as well. Is it necessary to have both sides connected? ?
  6. mithesaint

    mithesaint Feeling the Heat

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    Not sure on the thimble question. I'd get a longer piece of pipe to go through the wall though. Joints inside of a wall are a bad idea. How do you know if it's leaking or not?
  7. tsmith

    tsmith Minister of Fire

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    Loc:
    Kutztown, PA
    Yea, you want the thimble pieces connected, they gotta make one that will work for you. I am sure a lot of people in older farm homes go through thick stone walls etc.
  8. smoke show

    smoke show Guest

    If your talikng about the entire top of the stove, you can tell when its seated by feel, and by reveal.
  9. SmokeyTheBear

    SmokeyTheBear Minister of Fire

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    Standish, ME
    Joints inside of a wall are a potential fire cause if the joint opens up the flue gases get directed into the wall cavity and are a lot hotter than the outside of the double walled vent would lead you to expect. In addition the open joint will inject CO plus possible sparks into the wall cavity.

    Nasty, nasty things happen then like CO poisoning and house fires.

    You can see if the vent manufacturer has a longer pass through for the venting you want to use. The pass through has to be fully sleeved as it is that sleeve that maintains the required clearance to combustibles by keeping any combustible the proper distance from the outside of the vent passing through the thimble in order to meet the testing labs safety certification and thus listing. Do not mix thimbles from one manufacture with venting from another.

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