This part is functionally identical to the 14506635-001/U

Lennox 12W64 Ignition/Fan Control Board

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5" WC manifold pressure settings for optimized two-stage heating cycles

Professionals should note the 5

McDonnell & Miller 354089 Switch Assembly 322056-301 This part is functionally identicalThe McDonnell & Miller 354089 Switch Assembly, also designated as the Model SWA 150S M, is a critical replacement component engineered specifically for Series 150S and 157S low water cut offs and pump controllers. For technicians servicing steam boilers, this snap action switch assembly is the standard for maintaining precise liquid level control and ensuring high limit safety. Featuring a manual reset mechanism, this assembly requires professional