Description
The Reznor RZ204327 Pressure Switch IS20310-5473 is a protection control unit that verifies proper air pressure before allowing burner operation and maintains safe system conditions in HVAC systems during heating cycles. It operates by sensing differential pressure changes within the airflow or venting path and signaling the control circuit to permit or stop ignition accordingly. Mounted within the unit and connected to pressure tubing, it monitors draft performance and airflow continuity. It supports reliable operation, prevents unsafe firing conditions, and contributes to proper ventilation and pressure regulation.
