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    imac567's Avatar
    imac567 Posts: 5, Reputation: 1
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    #1

    Dec 4, 2012, 04:34 PM
    Expansion tank in NC, max distance from Wtr Htr?
    Can someone please tell me how far from my water heater I can install a 2g thermal expansion tank? I would like it to be outside of the house in my pump shed. We will be connecting to county water and the valve, dual check, PRV and gauge will be in the shed, can I put the tank in there also? It will only be about 15 feet from the water heater. Thank you.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Dec 4, 2012, 06:25 PM
    How will you keep it from freezing?
    imac567's Avatar
    imac567 Posts: 5, Reputation: 1
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    #3

    Dec 4, 2012, 07:22 PM
    Quote Originally Posted by ma0641 View Post
    How will you keep it from freezing?
    If it ever got cold enough for ANYTHING in there to freeze then I'll have more problems than a frozen expansion tank!
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #4

    Dec 4, 2012, 07:28 PM
    Quote Originally Posted by imac567 View Post
    If it ever got cold enough for ANYTHING in there to freeze then I'll have more problems than a frozen expansion tank!
    You should be OK. Anywhere after check valve and before heater. Mine is about 5 ft away and 2 ft above HW heater.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #5

    Dec 5, 2012, 08:39 AM
    It don't get cold enough to freeze in North Carolina? You can feel thermal expansion by simply placing you hand on the cold water feed line. If it's warm or hot then that's the water expanding and that's where I'd cut in a tee for the expansion tank. Good luck, Tom
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    jlisenbe's Avatar
    jlisenbe Posts: 5,020, Reputation: 157
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    #6

    Dec 5, 2012, 05:00 PM
    Well systems don't need those since the pressure tank performs the job of the little expansion tank you are thinking of installing. That tank is a long ways from the hot water heater. Since water pressure is dynamic, I'd think putting it outside would work. But Speedball's suggestion would be about as easy as putting it anywhere else, so you might want to go with it.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #7

    Dec 6, 2012, 07:34 AM
    If you really want to do it right you'll install the expansion tank close to the heater and install a check valve just ahead of it, good luck, Tom
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