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  1. #1
    Join Date
    Jun 2007
    Location
    Jersey
    Posts
    190

    Why does my CO detector go off?

    New water heater + chimney linear. 90% furnace.
    CO level low but 0 draft.
    Attached Images Attached Images  
    Any fool can know. The point is to understand. Albert Einstein

  2. #2
    Join Date
    Jun 2003
    Location
    Virginia
    Posts
    376
    What the heck is that in there??

  3. #3
    Join Date
    Feb 2010
    Location
    In a boiler room
    Posts
    6,914
    I'm assuming the inlet to the liner does not quite line up with the flue pipe from the water heater?

    Looks like the tail of a hose clamp in there.

  4. #4
    Join Date
    Aug 2004
    Location
    S.E. Pa
    Posts
    6,050

    Cool

    Yep, looks like a removeable snout to the liner tee that got misaligned.

    You mentioned something about a 90% furnace. I hope it is not vented into this liner as that is a major safety issue. You cannot vent positive flue gas pressure combustion appliances with any other appliance much less an atmospherically vented one. Also, there are only two liners listed for positive flue gas pressure as most are Not approved for such use.

  5. #5
    Join Date
    Jun 2007
    Location
    Jersey
    Posts
    190
    What your looking at is base of chimney where flue pipe and linear meet. Linear was never properly connected to flue. Gas furnace is vented properly via pvc through side wall.
    Any fool can know. The point is to understand. Albert Einstein

  6. #6
    Join Date
    Aug 2004
    Location
    S.E. Pa
    Posts
    6,050

    Wink terminology

    Dude, sorry but your terminology is killing me! Please forgive me while I make a few corrections:
    The 'chimney' is the vertical structure. Inside the chimney is a flue, which should be lined but isn't always and most terra cotta liners fail requiring 'relining'. You may also need to reline for sizing. Now the pipe from the appliance to the flue liner (whether terra cotta, stainless steel, aluminum or poured cementitious liner) is called the 'connector'. For oil, it is referred to as the 'chimney connector' while gas appliances use a 'vent connector'. The vent connector in the case of a liner with a tee would include the snout of the tee, which is ajar in the OP's photo and not properly engaged into the tee body. Properly done, the male crimped end would have a full even reveal inside the tee and the stainless steel band clamp drawn tight pulling it into the tee. The 'flue' is the liner itself in this case.

    Glad the 90%'er is not common vented into this liner. Whew!

    BTW, 'linear' means in a straight line as opposed to wandering or abstract.

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