Lochinvar & A.O. Smith 100163257 Bypass Assembly 320788-704 80" WC threshold is met

80" WC threshold is met but the circuit remains open

ensuring the combustion air signal remains within the manufacturer’s specified range

Easy Installation: The slender body design facilitates the use of deep-socket wrenches in tight mechanical spaces

or refrigerant dilution in the oil

Lochinvar & A.O. Smith 100163257 Bypass Assembly 320788-704 80" WC threshold is metThe 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