Lennox 78H74 Limit Switch 322838-753 preventing catastrophic shell and tube

preventing catastrophic shell and tube damage

This industrial HVAC compressor is designed for high-ambient performance and 3-phase motor protection

Because the actuator can be installed or replaced without draining the system or using tools

Self-Powered Reliability: Utilizes a standing pilot and thermopile configuration

Lennox 78H74 Limit Switch 322838-753 preventing catastrophic shell and tubeThe Lennox 78H74 is a critical OEM L185F limit switch designed for precision thermal protection in residential and commercial Lennox heating systems. As a primary safety control, this high limit switch monitors internal heat exchanger temperatures and is engineered to open the electrical circuit if the ambient temperature reaches the L185F set point. This rapid response prevents internal overheating and ensures the system operates within safe HVAC