The SAT setpoint reset helps improve control for the system zones that may have a tendency to overcool or overheat. By monitoring the operation of those zones, the system may adjust the SAT setpoint accordingly to move the zone back to its user-set occupied or unoccupied setpoints.
You can select a representative zone at the Zone Coordinator. The system monitors the status of the cooling and heating for the selected zone and determines if heating or cooling is at full capacity. If the cooling capacity of the zone is fully used, the SAT setpoint is lowered by 1°F. If the heating capacity of the zone is fully used, the SAT setpoint is raised by 1°F. The system then adjusts the SAT setpoint after 30 minutes. The SAT setpoint is gradually reset to its default value when heating or cooling is no longer at full capacity. This reset prevents the system from getting stuck at a setpoint when the representative zone is readjusted. A user-set maximum SAT setpoint adjustment parameter limits the range of adjustment. The user can disable the SAT reset strategy if desired.