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Can I control DHW and Pool loop with just the Munchkin boiler (no external control)

BVD202004 Member Posts: 2
edited March 26 in THE MAIN WALL
I have an existing Munchkin boiler and wanted to know if I could control the DHW and Pool loop with just the boiler and no external controller. Both loops operate at 140 degrees. DHW loop takes priority over pool.


  • hot_rod
    hot_rod Member Posts: 22,103
    What temperature do you want the pool? That needs to be set into a control somewhere.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • pedmec
    pedmec Member Posts: 968
    it depends on how its pipe. if the domestic hot water is piped with a branch off the boiler loop you could. DHW sensor will go directly to the 925 control board. set point control lands on t-t on the 925. Eliminate the outdoor sensor so you can set the system temperature to 140 and don't have the warm weather shutdown shutting the pool loop.

    This only works if this is the only two zones on the boiler. if you have more zones it will get more involved
  • HomerJSmith
    HomerJSmith Member Posts: 2,434
    You need a heat exchanger between the Munchkin circuit and the pool circuit if chlorine is in the pool water. That may mean an extra pump.
  • BVD202004
    BVD202004 Member Posts: 2
    I have a circulator pump along with the DHW and Pool pump. I see landing spots for the CHW and DHW Pumps. Where would I tie in the pool pump?