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Indirect fired water heator

Rich_36 Member Posts: 1
I would like to install a WM indirect hot water heater gold plus 60 gal I have a WM cga5 102.000 net ibr btu boiler and the heat load from the house is 75.000. can I run a zone valve to the hotwater heater or do i need a extra pump for the hot water heater also do i have to priority wire this type of set up.


  • Brad White_138
    Brad White_138 Member Posts: 4

    I prefer to give an indirect it's own circulator and priority. Zone valves (some, not all) take too long to open so they are not as resonsive. Also when using zone valves, if not set up with priority, the DHW is just another zone... you may wait for a shower. A dedicated circulator is a good thing. A bit bossy too. Oh, if you can, make it first in line off the boiler. First dibs!

    My own home setup has a 3-way diverting valve. It directs 100% of boiler capacity to making DHW then gets back to heating the house without a hiccup.
  • burninben
    burninben Member Posts: 33

    Rich, dont forget a check valve to prevent flow when space heating is taking place.
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