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SPNO Close-On-Fall Logic: Prevents furnace ignition unless the inducer motor establishes sufficient negative pressure
Leaving Water Temperature (LWT)
Always verify the model and serial number of the furnace to ensure the 1172824 matches the required static pressure curve for your specific heat exchanger configuration
is a 2-way normally closed solenoid valve engineered for liquid line service in light-commercial refrigeration systems
HVAC contractors frequently utilize the Carrier HK06MB023 to resolve common Carrier error code 31 or fault code 23
Lochinvar & A.O. Smith 100166325 Pump 321894-709 SPNO Close-On-Fall Logic: Prevents furnaceThe Lochinvar & A. O. Smith 100166325 Pump Less Volute is a heavy duty centrifugal circulator pump component engineered for high efficiency commercial water heating systems. This replacement pump motor and impeller assembly is designed for rapid integration into existing volutes, minimizing downtime during critical hydronic repairs. Built with a high torque motor and precision balanced impeller, it maintains optimal flow rates in Lochinvar Knight and