What is the pressure drop through the brazed plate heat exchanger (both for the DHW side and for the boiler side)?
The design pressure drop through the brazed plate heat exchanger is the same for both the boiler side and the DHW side for any given flow rate. The DHW side flow rate is a maximum of 5 GPM and the pressure drop at that flow rate is 1.82 PSI (4.2 FT. W.C.). The boiler side flow rate and pressure drop are approximately the same.