Weil McLain 511-624-643 Sensor Assembly Refrigerant 5 inch water column calibration

5 inch water column calibration

this 008171F switch prevents unsafe operation by monitoring the air pressure differential across the blower assembly to ensure proper venting and flue gas evacuation

This control is designed for a maximum working pressure of 250 PSIG and has been tested up to 290 PSIG to ensure safety during system surges

No Neutral Required: Simplifies retrofitting in older buildings where neutral wires may not be present in the switch box

replacing it with the Carrier 320725-756 often corrects the draft issue

Weil McLain 511-624-643 Sensor Assembly Refrigerant 5 inch water column calibrationThe Weil McLain 511 624 643 Pressure Sensor Assembly is a critical OEM replacement component designed for high performance hydronic systems. This burner pressure sensor kit includes the transducer and junction box, providing the precise feedback necessary for modulating boiler control and combustion safety. Unlike standard switches, this assembly integrates a no siphon sensor design to deliver accurate static and dynamic pressure differential readings