Replacing water heater

Discussion in 'Water Heater Forum, Tanks' started by cag9228, Aug 8, 2011.

  1. cag9228

    cag9228 New Member

    Messages:
    3
    Location:
    Texas
    All,

    I am replacing a water heater that developed a slight leak at the cold inlet. At first I thought it was the nipple, but after disassembling and reassembling the connections (used Rectorseal #5 on the threaded connections) I realized it was a leak on a weld.

    So when installing the new one, do they come with the T&P already installed? If so, do I need to remove it, dope it, and screw it back in? Ditto with the nipples. And should I be worried about over tightening threaded connections?


    Regards,

    Andy
  2. Terry

    Terry Administrator Staff Member

    Messages:
    15,416
    Location:
    Bothell, Washington
    Most new water heaters that I'm installing have the T&P and the nipples preinstalled.
  3. cag9228

    cag9228 New Member

    Messages:
    3
    Location:
    Texas
    Ah ok. So then I just leave them alone.

    I'll attach the dielectric unions to the nipples and run copper from the unions up. That's pretty easy.
  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,313
    Location:
    New England
    Depending on the one you buy, the nipples may already BE a dielectric union...no reason to add another one. Also, depending on where you live, some places REQUIRE the connection to be made with a flexible supply, and some PROHIBIT it. It's much easier to screw the flexible copper supply pipe in rather than try to align it with hard copper, but either can work, depending on what your inspector wants.
  5. cag9228

    cag9228 New Member

    Messages:
    3
    Location:
    Texas
    Yeah the flexible connectors are out as an option due to code. Aligning the copper isn't that big of a deal.
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