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Rugged Build Quality: Built for industrial use and high-cycle applications in demanding HVACR environments
As a Maneurop MT series motor
Compatibility depends on the specific Infinity User Interface model
Contractors favor this technical specification for its ANSI Class IV leakage rating
or an "Open Ignitor" fault code on the integrated furnace control board
Lennox 12W49 Pressure Switch 321702-401 Rugged Build Quality: Built forThe Lennox 12W49 Pressure Switch (Model R20558702) is a critical OEM safety component engineered for precise combustion air monitoring in Lennox gas furnaces. This SPST pressure switch is factory calibrated to actuate at 1. 35" W. C., ensuring the inducer motor generates sufficient draft for safe venting before the ignition sequence begins. Designed for professional grade reliability, it features a standardized 1 4" barb connection for secure
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