I used the Daikin guide to simulate VRF in equest. There are two questions. 1, PSZ was used as the system which only allow one zone for each system. But in my model, each system served several zones. Which system shall be chose for multiply zones? 2, Because the question one, I chose PTAC as the system, and changed the curves based on Daikin guide. If, I chose heat pump as the heating source, but I got a very high heating consumption at winter. If, I chose electric as the heating source, the heating consumption was almost zero at winter. Who can explain it and which one is correct for VRF heating.