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The die-cast aluminum housing protects a high-quality rolling diaphragm
This heavy-duty switch is a direct replacement for Lennox 57M6701 and is compatible with several Lennox and Allied Air platforms
technicians should also verify there are no blocked flue vents
Contractor Friendly: Pre-wired leads and external mounting nipple streamline the control circuit integration
This SPST open on rise switch features a versatile 135 to 175 degrees F adjustable temperature range with a fixed 20 degrees F differential
Lennox 53K80 Fan Timer Kit Els PW 17895 The die-cast aluminum housing protectsThe Lennox 53K80 Fan Timer Kit (replaces LB 90157A) is a critical OEM replacement component engineered for precise fan motor orchestration in Lennox Pulse G21 and high efficiency furnace series. This HVAC control board integrates a sophisticated fan timer control circuit that manages the post purge and pre purge cycles of the blower motor to optimize heat exchanger thermal discharge. Designed for high duty cycle applications, the kit includes the
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