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Visual Identification: Brown color coding ensures you have the correct 2-7# spring before starting the teardown
Precise Pressure Regulation: Optimized for sensitive electronic ignition systems
allowing for the fine-tuning of stroke length and torque delivery between the actuator and the damper blades
This specific pneumatic reversing relay is factory-calibrated to a 9 PSI crossover point
Lennox 79J89 Limit Switch Visual Identification: Brown color codingThe Lennox 79J89 Limit Switch is a critical OEM replacement part designed for precise thermal regulation in Lennox residential and commercial furnaces. This 140 170F AUTO Limit Switch functions as a primary safety mechanism, monitoring internal plenum temperatures to prevent heat exchanger damage or unsafe operating conditions. Engineered with a 170F cut out temperature and a 140F cut in temperature, this automatic reset limit switch ensures the