Lennox 49M50 Pressure Switch 318518-761 Simplified Installation: Features a standard

Simplified Installation: Features a standard 3/4" x 3/4" connection and a compact

While it functions as a standard control relay

Engineered to facilitate efficient refrigerant pump down and system isolation

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

this ClimateMaster thermistor should read approximately 10

Lennox 49M50 Pressure Switch 318518-761 Simplified Installation: Features a standardThe 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