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    batkins61's Avatar
    batkins61 Posts: 3, Reputation: 1
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    #1

    May 29, 2009, 02:46 PM
    Physical mounting of hot water recirc pump
    I purchased a grundfos recirculation pump for my hot water system and I'm planning the installation. The thing is pretty heavy and there are no attach points to mount the pump itself. I'm installing it on a wall with 16" center studs. With only 1/2" copper spanning the 16" with the pump somewhere in the middle, will there be enough support? What are my other options?

    Thanks!
    Batkins61
    afaroo's Avatar
    afaroo Posts: 4,006, Reputation: 251
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    #2

    May 29, 2009, 03:10 PM

    Can you tell me what model grundfos recirculation pump did you buy? Thanks.

    John
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #3

    May 29, 2009, 03:33 PM

    you could span the 16" studs with horizontal 2x4s, then run unistrut in the vertical on top of the added 2x4s. Place the unistrut right up tight to each side of pump, then use half inch copper tubing unistrut clamps to mount the copper tubing to the unistrut. This will ensure a solid mount, and also give you room between the pump and wall. Of course this is only one of many ways to mount the pump to wall. Hope this all makes sense.

    You could also just put up some plywood to span the studs and put anchors closer to pump by anchoring the pipe to the plywood.
    batkins61's Avatar
    batkins61 Posts: 3, Reputation: 1
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    #4

    Jun 6, 2009, 05:07 PM
    Quote Originally Posted by afaroo View Post
    Can you tell me what model grundfos recirculation pump did you buy?, Thanks.

    John
    Sorry John. I saw this post but didn't have access to the information and then got sidetracked.

    I got a UP15-10BUC5/TLC. I got this one because it has enough power for moving the water around the loop in my 1 story ranch. I also wanted a line corde, timer, check valve and sweat fittings.

    If I were to do it again, I might go for one with union fittings. As it is, I'm putting a union and valve on each side.

    The problem is that the motor spindle must be horizontal, which means it's cantilevered out from the mounting service, hence my concern about how to mount it.
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
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    #5

    Jun 6, 2009, 05:11 PM

    Hot circ-pump hangs on the 1/2" pipe itself. No special support is needed.
    afaroo's Avatar
    afaroo Posts: 4,006, Reputation: 251
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    #6

    Jun 6, 2009, 10:39 PM

    Yep I agree with Milo, no need for any other support, Thanks.

    John
    batkins61's Avatar
    batkins61 Posts: 3, Reputation: 1
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    #7

    Jun 7, 2009, 06:52 AM
    Ok, thanks guys!
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