System Sensor WFD30N Detector R-410A If voltage is present but

If voltage is present but the load terminals fail to show continuity within the specified timing window—usually 1 to 110 seconds—the internal heater or bimetal disc has failed

Always verify mounting dimensions before attempting cross-application

Constructed with a chrome metal bonnet and plastic handle to withstand the high temperatures of commercial hot water tanks

this 12x11 blower wheel provides the precise balance required to protect the blower motor bearings and maximize CFM output

this OEM Lennox capacitor ensures proper phase shift and motor efficiency

System Sensor WFD30N Detector R-410A If voltage is present butThe System Sensor WFD30N is a heavy duty vane type waterflow detector engineered specifically for integration into 3 inch schedule 10 through 40 steel piping systems. Designed for wet pipe fire protection and hydronic installations, this flow switch utilizes a durable polyethylene vane and a mechanical pneumatic retard mechanism to minimize false alarms caused by pressure surges or trapped air. With a static pressure rating of 450 PSI and a NEMA 4