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  1. #1

    Question Fluepipe routed through ductwork

    Hello all,

    This is the issue. Here is a high efficiency forced air furnace and the exhaust fluepipe has been routed through the return duct above the furnace on its way to the outside. The fluepipe is a PVC plastic pipe.

    I had experience before with a draft induced furnace fluepipe routed through ductwork and I called it out as a problem and it was. The fluepipe in that instance was a metal pipe.

    I contacted the local building inspection department to get some clarification on this issue but haven’t gotten a response yet. The home is approximately 15 years old.

    My question is that I want to confirm that this is an issue and wanted to know if it is written somewhere in the code and what the code says.

    I have included a couple of pictures.

    Thanks,

    Scott

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  2. #2
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    2,048

    Default Re: Fluepipe routed through ductwork

    IRC M1801.8 Duct penetrations: Chimneys, vents and vent connectors shall not extend into or through supply or return air ducts or plenums.
    Stick it to that idiot contractor.
    Beyond the obvious, you should also explain to your client, based on the pic, that there is a coupling joint located with that return cavity. Do you know that the glue joint is properly done and fully sealed? No, don't have x-ray vision? Then out it must come to avoid contaminating the system.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  3. #3

    Default Re: Fluepipe routed through ductwork

    Thanks Markus. I did get a call back from the local building inspector and he confirmed the issue and the same reference you did. Ive always been able to get a faster response on Inspection News than ever with a direct phone call.


  4. #4
    Join Date
    Jul 2008
    Location
    Utah
    Posts
    390

    Default Re: Fluepipe routed through ductwork

    Are you sure that is not a sleeve thru the duct and that the vent pipe is not completely isolated from the air stream?


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