Bento board · neon hairline · brutal drop
SKU: 40306669929
Ships within 48 hours · Estimated delivery Sep 6 - Sep 11
and MC-321-103 models
ensuring consistent superheat control and maximizing coil efficiency
Key Benefits: Precision Alignment: Engineered with a 3-leg configuration to provide a stable housing for 1-9/16" bearings
System Efficiency: Accurate thermal sensing allows for proper modulation
56-inch bolt holes
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.