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Rosewood paper grain — description and returns beneath the overlapping buy card.
and MC-321-103 models
or system lockouts caused by pressure switches detecting out-of-range parameters
Key Benefits: Precision Alignment: Engineered with a 3-leg configuration to provide a stable housing for 1-9/16" bearings
ensuring exact bolt-on compatibility with existing burner assemblies
It is fully compatible with HF9-16 series housings and serves as a direct cross-reference for part numbers HK-E9-16 and HKN-E9-16
Lochinvar & A.O. Smith 100288429 Switch Refrigerant and MC-321-103 modelsThe Lochinvar & A. O. Smith 100288429 Switch is a critical safety component designed for precise air pressure sensing in high efficiency heating systems. This OEM replacement part is factory calibrated to a 3. 90" water column (WC) set point, serving as a primary air proving switch to ensure the blower motor is moving sufficient combustion air before the ignition sequence begins. Engineered for compatibility with specific Lochinvar boilers and A. O.