The Heat Recovery Enthalpy Suitability Determination module determines whether the conditions are suitable for using the heat recovery function for heating or cooling. This module uses outdoor air and return/exhaust air enthalpy to determine whether to use heat recovery. The return/exhaust air dry bulb temperature is adjusted by the amount of the Deadband/2 to make sure enough energy can transfer to justify the operation of heat recovery. The module compares the return/exhaust air temperature with the outdoor air temperature to make the decision. If any of the temperature or humidity inputs are unreliable, the heat recovery is set to not suitable.
You can view and modify the modules in this group’s logic.