How do I set the differential by pass valve on the T2 UFH Heat Pump?

  • Adjust primary / secondary pumps  to give the total design flow rate for the manifold with the differential bypass valve set to maximum – 8
  • Commission the manifold circuits as normal with the lockshield or flowmeters to give the design flow rate in each circuit
  • Close off all circuits but one – with the highest resistance –  then reduce the setting of the differential pressure bypass valve to give the designed flow rate
  • Open up the other circuits and check that the design flow rate is still being achieved