Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The best way to model a system is to look at how it works in real life. Most rooftop units that serve a single zone have constant volume fans; therefore, the temperature of the air varies between a maximum and a minimum.
You can control your Airloop in this fashion using a SetpointManager:SingleZone:Reheat object. You will set your Minimum Supply Air Temperature and your Maximum Supply Air Temperature.
In your case, because you have a single zone system it does not make a difference to use the SetpointManager:Warmest to reset the supply air temperature, as there is only one zone and the SetpointManager:SingleZone:Reheat will also do that reset to accommodate your constant airflow.
