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Thread: Trane XV95 new install

  1. #1
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    Trane XV95 new install

    Found this in an attic. Both the fresh air intake and the flue pipe tied together. Was there on a social visit.

    HO is supposed to call the installing contactor to fix....
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    Never seen a concentric kit before?

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  4. #3
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    Concentric pipe. Intake and exhaust are separated in that 4-inch pipe. The benefit is that you only need one hole leaving the roof. Looks clean to me.

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    I have but dont agree with it. Why take the risk? To save a roof hole? Fresh air in on its own is how the furnace is designed.
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    I think most manufacturers approve of the concentric kit.

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  8. #6
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    If it ever dips below freezing I could see issues with a condensing furnace in an unheated attic.

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    Quote Originally Posted by Artietech View Post
    I have but dont agree with it. Why take the risk? To save a roof hole? Fresh air in on its own is how the furnace is designed.
    Concentric kits bring fresh air in on there own. They aren't tied together. It's a pipe inside of a pipe design and are used in many applications with zero issues. I would call off that pipe replacement if I was you. You're doing someone a disservice by charging them for it.

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  11. #8
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    Not my install nor my customer. So how am I doing someone a disservice? I said it was a social call to someones house. They asked my opinion and I gave then an opinion. Last installation manual I read did not mention a concentric kit, maybe I'm biased and missed it?

    This is currently an unfinished attic. BUT it is being turned into the second floor.

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  13. #9
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    Wow, look at all the head room in that attic.

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    Can someone show me where Trane or any other brand endorses this product? What about venting requirements under building codes? And no just because it passed inspection does not make it approved. The same inspector who oked this also passed over no secondary drain installed at all. The emergency pan not drained. It does have a float switch. And one of those Safety Tees from rectorseal, but that is still in the package and not on the unit.

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  16. #11
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    Lots of room. Furnace is installed in upflow to blow air downstairs....

    Quote Originally Posted by Bazooka Joey View Post
    Wow, look at all the head room in that attic.

  17. #12
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    Just a concentric vent, I've used them quite often. Very popular around here.
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  19. #13
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    Lets see here. Crown Boiler makes a boiler specific to work with a concentric kit. Rheem offers a concentric kit for their furnaces.

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  21. #14
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    Quote Originally Posted by Artietech View Post
    Can someone show me where Trane or any other brand endorses this product?
    Page 5 of manual it's labeled BAYVENT from Trane
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  23. #15
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    FWIW:
    XV95 manual:
    Page 5 & Page 20 reference the concentric termination.

    So, unless the AHJ has a policy in place, it is an approved installation.

    As you said you offered your opinion. You also said : "HO is supposed to call the installing contractor to fix...

    I suspect the majority of respondents were stating their opinions and experience(s) also.

  24. #16
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    Exhaust goes out the top, combustion air gets pulled in through the bottom. I don't understand what the big deal is. They're used just about everywhere around here and I've never seen an issue with them.

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  26. #17
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    I don't think this guy understands the way this device is constructed.

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    I hope these pictures help. Once you use one, you'll never do it any other way.

  27. #18
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    I am pretty sure that bigger part you see going though the roof is double-walled. There is an inner pipe and an outer pipe. I am drawing a blank right now on what this is called but it's a standard item.

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    Quote Originally Posted by Artietech View Post
    Found this in an attic. Both the fresh air intake and the flue pipe tied together. Was there on a social visit.

    HO is supposed to call the installing contactor to fix....
    PHM
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    The conventional view serves to protect us from the painful job of Thinking

  28. #19
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    Just call your friends and say something like "I did some research on that piping as I just couldn't believe anyone would do something that dangerous...turns out it's a perfectly acceptable concentric kit."

    Then wipe the humble pie crumbs off you face and move on...now you know.
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  30. #20
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    BAYAIR30AVENTA

    Trane's part # for a concentric.

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