Description
The Reznor RZ205442 Pressure Switch 0.20″WC White Label is an essential safety and control component used in gas-fired heating systems to monitor air pressure within combustion or venting circuits. It operates by responding to small pressure changes measured in inches of water column, ensuring that airflow conditions remain within the required range for safe burner operation. In HVAC systems, it is commonly installed in unit heaters and furnace assemblies to check proper inducer fan performance and venting integrity before ignition. The switch supports the system by enabling or interrupting operation based on detected pressure conditions.
