Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
One of the challenges of attaching a water to water heat pump to a solar hot water collector is that currently (Version 8.3.3) the water to water heat pump will only accept a CondenserLoop on the source source side. See this thread on GitHub:
https://github.com/NREL/EnergyPlus/issues/4972
I've been able to mitigate this issue by creative use of the HeatExchanger:FluidToFluid object. You could probably connect your water to water heat pump to the solar connector by putting a heat exchanger just after the solar collector and on the solar collector branch. Put the other side of the heat exchanger just before the water to water heat pump and on the same branch.
