1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
    Caluwe - Passion for Fire and Water ( Pellet and Wood Hydronic and Space Heating)

Venting pellet stove through existing chimney?

Post in 'The Pellet Mill - Pellet and Multifuel Stoves' started by MikeP, Sep 20, 2011.

  1. MikeP

    MikeP Member

    Joined:
    Mar 15, 2006
    Messages:
    88
    Loc:
    Northern NY
    Friend has an existing factory built 6" stainless steel chimney, currently being used for a wood stove. He would like to swap out the wood for a pellet stove. Any reason or code that says you cannot do this? Also if allowed what type of pipe would you use to connect the pellet stove to the chimney? Regular black 4", typical pellet vent pipe with some sort of adapter to go from the pellet to chimney connector??? Thanks for any help.

    Helpful Sponsor Ads!





  2. DexterDay

    DexterDay Guest

    They sell a 3"-6" or a 4"-6" pellet vent adapter. I believe Simpson does, othed Manufacturers probably do also. Do a search and it should come up. There are a few members here that have a similar set up.
  3. imacman

    imacman Guest

    I adapted my stove into the existing 8" woodstove pipe:

    Attached Files:

  4. MikeP

    MikeP Member

    Joined:
    Mar 15, 2006
    Messages:
    88
    Loc:
    Northern NY
    Now is that just black single wall pipe? Or is it regular pellet stove pipe, painted, with an adapter to the factory built chimney?
  5. imacman

    imacman Guest

    It's regular 4" pellet pipe with adapters to mate with 8" double wall stove pipe.
  6. Don2222

    Don2222 Minister of Fire

    Joined:
    Feb 1, 2010
    Messages:
    6,960
    Loc:
    Salem NH
    That was a nice stove imacman!

    I used a 4" to 8" adapter to go into my block chimney.

    The pellet pipe goes into the adapter and should go in a couple inches or so, then seal with high temp RTV.

    Attached Files:

  7. MikeP

    MikeP Member

    Joined:
    Mar 15, 2006
    Messages:
    88
    Loc:
    Northern NY
    Ok... Thanks
  8. pellet_pyretic

    pellet_pyretic Member

    Joined:
    Jan 28, 2011
    Messages:
    2
    Loc:
    Jersey
    I did this last year at my mothers house. She had a 8" duravent (double wall) pipe attached to a woodstove and wanted to convert to a pellet stove, I used the 8"x4" adapter as described. However I used a 4" flexible stainless steel liner for the remainder of the 8" pipe. The guy at my fireplace shop suggested that even with the forced draft from the combustion blower I may have draft issues. 8" pipe is pretty big for a pellet stove which creates much less heat (hence less draft) than a woodstove.
  9. BrotherBart

    BrotherBart Hearth.com LLC Mid-Atlantic Division Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    27,724
    Loc:
    Northern Virginia
    Just installed my pellet stove tonight. Into a 32 foot chimney lined with a 5.5" stainless liner previously used for a wood stove. I used Simpson pellet pipe to the existing thimble. Really don't know why I didn't use three inch stove pipe but I had the pellet pipe already.

    Which brings up a question. Why necessarily does one need to use pellet pipe for the connector in an installation like that? Except for clearance issues. In my case there is nothing behind the stove but a concrete wall.

Share This Page