Weil McLain 511-624-643 Sensor Assembly Refrigerant No Neutral Required: Simplifies retrofitting

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

Its robust insulation class ensures consistent performance under continuous duty cycles

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

and FS6536-866

cutting power to the burner circuit to prevent heat exchanger damage or flame rollout in the event of a blower failure or restricted airflow

Weil McLain 511-624-643 Sensor Assembly Refrigerant No Neutral Required: Simplifies retrofittingThe 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