Copeland Comfort Control (White Rodgers) 90 113 Relay Trans double throw functionality to manage shared double throw functionality to manage shared power paths between two different loads Key Benefits Precision engineered for the Honeywell MP953F series reverse acting actuators to ensure exact feedback loop calibration providing the 24V power and dry contact switching required by modern thermostats to control 120V equipment The Copeland Comfort Control (White Rodgers) 90 113 Fan Relay Transformer is a heavy duty HVAC control center designed to manage line voltage fans and pump motors in both forced air and hydronic systems