WebMaster or others: Please-Double Wall Pipe Question

Nokoni Posted By Nokoni, Dec 5, 2005 at 7:22 PM

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  1. Nokoni

    Nokoni
    New Member 2.
    NULL
    

    Nov 28, 2005
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    WebMaster, you said:
    Let’s be clearer....

    two kinds of double wall:

    1. Class A (CHimney)
    2. Interior Double wall close clearance stovepipe.

    #1 can go through walls no problem as long as it meets the distance to combustibles.

    I suspect, although I don’t have any manuals handy, that #2 CANNOT pass through combustible walls.

    That said, your install may still be safe since you might be passing through a non-combustible wall and might still be maintaining clearances....

    The reason that #2 would ne be allowed to pass through walls is that the exterior of said pipe can be plain black steel, which could rot (undetected) inside the wall. Also the clearances are usually further to this pipe - far enough that it would not properly fit between studs.

    Sounds like you are on the case.


    I'm wondering this:
    My pipe info. says: Close Clerance Connector HT and I am passing through one layer of Micore 300-as far as I understand this product it is non combustible. Like I said before-behind the micore is 3’x3’ of air space and the chimney connector. Do you still think it sounds like I am “on the case” or am I fired?
    Thanks so much for your help. I appreciate all of the expert advice-this stuff is like brain surgery to me. I’m trying to hang in there!
     
  2. Metal

    Metal
    Minister of Fire 2.
    NULL
    

    Nov 18, 2005
    698
    16
    Double Wall Black Pipe (DWB) is designed as the connector between the stove and a listed chimney system. The DWB has an advantage over single wall black stove pipe because of reduced clearance to combustible materials, of six inches (may vary by manufacturer). The DWB incorporates a stainless steel flue (may vary by manufacturer) for longer service life, greater safety and hotter flue temperatures to improve draft. NEVER enclose this connector pipe or use it as a chimney to install through ceilings or walls or in inaccessible or enclosed areas.
     
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