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Indirect WH plumbed backwards

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Librarian
Librarian Member Posts: 4
in THE MAIN WALL
Howdy,

They are here now, replacing the old demand oil boiler with a new WM boiler and indirect hot water tank. I noticed the boiler water in and return were plumbed backwards. Is this a problem that they should address or is it nothing?

Comments

  • Brad White_9
    Brad White_9 Member Posts: 2,440
    Correct it

    The flow positions are there for a reason, generally in that you want to promote counterflow and convection within the tank. On my SuperStor for example, the hottest water enters the top and leaves the bottom so the coldest incoming water sees the coldest leaving boiler water. This also helps condensing (heat extraction) at the boiler level.

    If "In" and "Out", so specifically lableled, are ignored, what else might be? That is my take.
  • ScottMP
    ScottMP Member Posts: 5,882
    Make sure

    that they are backwards. They may be "pumping away" and have the circulator on the supply pumping towards the indirect. That may be backwards from what your used to seeing.

    On the other hand as Brad says, its backwards it should be corrected.

    Scott

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  • Librarian
    Librarian Member Posts: 4
    I made sure

    and I'll ask them to fix it. Thanks guys.
  • Unknown
    Unknown
    Even the pros make mistakes

    And in their own homes too . I piped the boiler in and boiler out wrong on my own Weil McLain Gold Plus 30 . So far we haven't run out of hot water yet .... But you are doing the right thing by asking the contractor to pipe it to specs .

  • Leo
    Leo Member Posts: 772
    There is one brand

    There is one brand that we don't use but on occasion will get one for a same for same replacement. But they switched the supply and return at some point so there goes that theory. I asked the rep about it at a trade show and he said just reverse them and remove the in/out sticker so no one complains. My question was is it critical and if switching is ok why didn't the install manual (yes I read them) mention it. He had no response. It isn't a brand highly talked about here but a few years ago it was highly criticized.
    Leo
  • kevin coppinger_4
    kevin coppinger_4 Member Posts: 2,124
    IF you look....

    at the Superstor Lit. it shows the stickers one way in the picture and then the opposite in the drawing......I called and they said it did not make a differ.....kpc

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  • hr
    hr Member Posts: 6,106
    If it is a Weil

    indirect it is a tank in a tank style. I would send the hottest supply to the bottom of the tank, as that is where the cold water goes in.

    But like Ron mentioned, I'll bet it would work fine backwards. Have you tried it for output and recovery?

    hot rod

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