Lennox 69W37 Fan Control 321894-709 It features a 15-second pre-purge

It features a 15-second pre-purge cycle to clear the combustion chamber and a 10-second Trial for Ignition (TFI) period

Key Benefits: Prevents oil dilution by maintaining temperatures above the refrigerant’s saturation point

Does the 24SV require periodic maintenance

this replacement control board provides the robust electronic architecture required for commercial and industrial 120V/24V interfacing

Lennox 69W37 Fan Control 321894-709 It features a 15-second pre-purgeThe Lennox 69W37 Fan Control, also identified as a L165 30F limit control, is a critical safety and operational component designed for precise thermal regulation in Lennox furnaces and air handling units. This fixed temperature limit switch features a 165 degree Fahrenheit open and 130 degree Fahrenheit close calibration, ensuring the heat exchanger remains within safe operating parameters while maintaining consistent blower cycles. Engineered for