Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Controlling the heating coil based on outdoor air temperature can be done easily with AvailabilityManager:HighTemperatureTurnOff and AvailabilityManager:HighTemperatureTurnOn using an outdoor air node as the sensor.
Controlling based on enthalpy is a bit trickier. You could either output the outdoor air enthalpy for every hour of the year, create an hourly on/off schedule based on the enthalpy, and use AvailabilityManager:Scheduled. Or the better but more complicated way to do it is using an EMS program that uses an EnergyManagementSystem:Sensor to track OA enthalpy and uses an EnergyManagementSystem:Actuator to control the coil availability. You could also just make an EMS program that uses both OA temperature and enthalpy to control the coil availability. If you're not familiar with EMS programs/controls, check out the EMS Application Guide documentation.
