A dual circuit (one mixed) assembly with return utilization and built-in high efficiency Grundfos UPM3 pump.   For highly efficient use of the return flow of a high temperature circuit in a mixed low temperature circuit at a condensing boiler, stratified storage tank or heat transfer station.

Capacity DN 25 light version: Heating circuit: Kvs = 6,2 - V'max[100mbar] = 2m³/h - Q'max[20K] = 47kW generator circuit: Kvs = 6,2 - V'max[100mbar] = 2m³/h - Q'max[10K] = 23kW   Capacity DN 25 heavy version: Heating circuit: Kvs = 11,9 - V'max[100mbar] = 3,8m³/h - Q'max[20K] = 88kW generator circuit: Kvs = 12,9 - V'max[100mbar] = 4,1m³/h - Q'max[10K] = 48kW