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the McDonnell & Miller 310452 is the current standard for Series 51 and 851 units
Optimized Airflow: The 30-degree pitch is calibrated to move maximum CFM at standard RPMs
this kit includes the necessary wiring harness adaptor to ensure a secure interface with existing pilot assemblies and ECO (Energy Cut-Off) circuits
supporting ambient temperatures from -40°F to 140°F
the CNT1859 ensures the compressor contactor and reversing valve operate in perfect synchronization during heating mode transitions
Lochinvar & A.O. Smith 100061541 Gasket 322055-301 the McDonnell & Miller 310452The Lochinvar & A. O. Smith 100061541 Gasket is a critical OEM replacement part designed for high performance hydronic heating systems and commercial boilers. This header gasket (part number 210779 000) is engineered to provide a robust, pressure tight seal within the waterways and combustion chamber interfaces of Lochinvar Power Fin and A. O. Smith Legend series units. High output copper tube boilers and volume water heaters rely on these precision
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