I have a building design with a large condenser water loop and the DHW design uses a heat exchanger with the condenser loop (60F-80F deadband) to preheat the incoming mains water before reaching the water heater inlet. Is there a way to model this natively in OpenStudio? Could I just add an HX in series before the Water Heater on the DHW supply side and then place that HX on the demand side of the condenser loop?