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Nice ECM upgrade for 3 piece circulators

hot_rod Member Posts: 20,827
wonder how much $$$
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream


  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,645
    Wow, that's a nice bolt up solution.

    Interesting to how it plans out.
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!