The White-Rodgers 90-486 Fan Relay is a specialized SPNO/SPNC enclosed relay engineered for heavy-duty switching in commercial HVACR and industrial motor control applications

Key Benefits Precise Thermal Control: Maintains a strict 160-230°F operating window to prevent heat exchanger damage or unsafe cabinet temperatures

with nominal liquid capacities of 1

Does the kit include all necessary hardware

Reznor 221228 Switch The White-Rodgers 90-486 Fan RelayMaintaining unit heater performance requires precise safety interlocks. The Reznor 221228 Switch is a high tolerance single pole single throw (SPST) safety device engineered to verify proper venting and combustion airflow before allowing the ignition sequence to proceed. This Reznor 221228 2. 30" WC SPST Pressure Switch is set to trigger at 2. 30 inches of water column, making it a critical component for Reznor unit heater maintenance and ensuring