Description
The Dual Circuit NP Variable Spped Flow Center is the appropriate strategy to use a single loop field to serve 2 heat pumps and still have all the benefits of a non-pressurized flow center. Using at least one of the Grundfos UPMXL 25-124 and possibly one or more UPS26-99 pumps the NPDVS Flow Centers will serve 2 heat pumps with at least one of them having a variable speed compressor. Once you calculate the required full load flow rate & corresponding pressure drop you can use the pump curves to help select whether you need (1) or (2) pumps for each of the two circuits.
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