So I added in a number of Packaged Rooftop Heat Pumps to my model, and I was wondering if anyone had any good control strategies for the supplemental electric heater which is included when you bring in the heat pump to your model? My model is using ridiculous amounts of electric heating energy when the coils are a part of each heat pump, and I'm looking for a good control strategy to control that extra electric heating coil.
I am looking to have most of the heating done by the DX heating and cooling coils, with the supplemental electric coil picking up the load on particularly cold days. This is for a reference building, so the coils are all being autosized, located in southern Ontario.
I've tried using a couple of FollowOutdoorAirTemperature setpoint managers before and after the supplemental coil, to no success. I've tried combinations of other setpoint managers too, again with little success.
Ideally, this extra electric coil only is used on the coldest days, when the DX heating heating coil cannot meet the load.
