This option uses the zone or return temperature sensor to reset the discharge air temperature setpoint. The Zone or Return Control of Staged Cooling, Reset of Heating setting controls the cooling based on zone or return air temperature, and discharge control of heating. Selecting the Add Return/Zone Reset by OA option adds an additional reset loop so that the zone or return setpoint is reset by the outdoor air temperature, while the zone or return air temperature is used to reset the discharge air setpoint.
If Discharge Air Temperature Reset by Zone or Return is selected, Cycle During Occupied cannot be selected.