Weil McLain 511-624-403 Pressure Switch Els PW 17895 Lennox 38F91 Defrost Thermostat

Lennox 38F91 Defrost Thermostat

meaning it can switch or isolate two separate circuits simultaneously

This heat pump defrost sensor is essential for preventing compressor slugging and maintaining the structural integrity of the outdoor coil assembly throughout the heating season

000 PSI makes it fully compatible with R410A and other high-pressure systems

maintaining reliable proportional output signals for pneumatic valves and damper actuators across various heating and cooling applications

Weil McLain 511-624-403 Pressure Switch Els PW 17895 Lennox 38F91 Defrost ThermostatThe Weil McLain 511 624 403 Pressure Switch is a critical OEM safety component specifically calibrated for CGi 5 Series gas boilers and select CGs 5 models. Operating with a precise fixed set point of 1. 22" W. C., this air pressure differential switch ensures that the inducer fan is generating sufficient draft before allowing the ignition sequence to proceed. It is designed for standard altitude installations ranging from 0 to 1,999 feet. This