Return Protection

Mass Heat Posted By Mass Heat, Apr 10, 2012 at 7:57 PM

  1. Mass Heat

    Mass Heat
    New Member 2.

    Feb 16, 2012
    Southern Mass
    Where does the return protection valve go on an Outdoor set-up with a standard 50 plate heat exchanger? My local dealers don't typically install them. I was thinking the point of return outdoors would make the most sense. However, I'd prefer the least amount of connections outdoors. How about adding one where the pex comes thru the foundation? I'm picturing a thermostatic valve on the return side , a short piece of ppie, and a tee to create a loop. Is that sufficient? Any specific valve models would be appreciated as well. I read up on Danfoss and it appears that there are several to choose from with the 140 degree protection.
  2. woodsmaster

    Minister of Fire 2.

    Jan 25, 2010
    N.W. Ohio
    I dont see why it couldn't be in the house as long as you have good undeground lines that don't loose much heat.

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