Lennox 49M50 Pressure Switch 318518-761 Designed for LP gas heating

Designed for LP gas heating systems

or 240V) and purchase a compatible AM or ASC2 coil separately

and warming cabinets

The onboard LED status indicators provide real-time diagnostic feedback for system calls

While it functions as a standard control relay

Lennox 49M50 Pressure Switch 318518-761 Designed for LP gas heatingThe Lennox 49M50 is a high performance HVAC high pressure switch designed for critical system monitoring in residential and commercial cooling applications. This genuine OEM Lennox pressure switch functions as a primary safety control, specifically calibrated for a 640 psig cut out (C O) threshold. When refrigerant pressures exceed this safety limit, the switch breaks the electrical circuit to the compressor, preventing catastrophic component failure