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replacing 491221B-00
technicians must verify that the manifold pressure and voltage requirements match the heater’s rating plate exactly to prevent delayed ignition or soot accumulation
Check the casting on the hydrant body or the identification tag
or 240V) dictated by the onsite control circuit
Common Installation Questions: Is the Reznor 147830 compatible with Propane (LP)
Lochinvar & A.O. Smith 100111982 Transformer 319825-402 replacing 491221B-00The Lochinvar & A. O. Smith 100111982 Transformer is a critical 100VA control circuit component designed for high demand commercial water heater and boiler applications. Built to handle the rigorous duty cycles of industrial heating systems, this step down transformer provides stable 24V secondary output from a standard 120V primary source, ensuring the reliable operation of ignition modules, gas valves, and integrated SMART SYSTEM controls. As a