Key Benefits Precision OEM Fit: Designed as a direct drop-in replacement for Carrier 326600-751

37" WC setpoint is accurate to factory specs

This universal interchangeable hub is optimized for 3-blade

The 100165930 is the updated Lochinvar flame sensor part number for the older PLT3022 designation

Lochinvar & A.O. Smith 100163257 Bypass Assembly 322056-301 Key Benefits Precision OEM Fit:The Lochinvar & A. O. Smith 100163257 Bypass Assembly is a critical OEM component engineered for precise flow management in high efficiency pool and spa heating systems. Built to withstand the rigorous demands of commercial and residential hydronic applications, this 1 2" NPT bypass kit ensures optimal heat exchanger performance by regulating water velocity and preventing thermal shock. This assembly is a direct replacement part designed specifically