Simulation time explodes with AirLoopHVAC:UnitarySystem
I just added an AirLoopHVAC
with an Outdoor Air System and an AirLoopHVAC:UnitarySystem
.
The AirLoopHVAC:UnitarySystem
itself contains a Coil:Cooling:WaterToAirHeatPump:EquationFit
, aCoil:Heating:WaterToAirHeatPump:EquationFit
and a supplemental heating Coil:Heating:Water
as well as a Fan:VariableVolume
, and it is set to Control Type Load
with one of the two zones it serves (a lobby and a vestibule) as a control zone.
My simulation time completely bloated. It went 08min50 to 1h35min (and 15 minutes later it's still writing the SQL file...), and I'm getting convergence issues during the warmup. I didn't change anything else.
Is there anything I can do to avoid having such a long simulation time?
Any workarounds I could use such as wrapping a single coil in a dedicted unitary system set to Setpoint or something? This is making my model completely useless.