I am using a PlantComponent:TemperatureSource connected to a WaterHeater:Mixed which is then connected to a ZoneHVAC:Baseboard:Convective:Water. I had a few of these components set to autosize but realize they might not be receiving enough information during the design days. I am running the energy model in a co-simulation with another program that, during runtime, feeds in the temperature of the PlantComponent:TemperatureSource and the Mass Flow rate of a pump. Unfortunately, none of this information is passed during the design days.
My question is, how does EnergyPlus autosize equipment? Does it only look at the design days to find the most extreme conditions?
Additionally, because I'm not feeding in the temperature and flowrate values prior to the run period, is there anyway I can still have parts of the connected plant loops autosize?
