Lochinvar & A.O. Smith 100111982 Transformer 340155-7024 the MC-421 actuator is a

the MC-421 actuator is a direct replacement for the MC-421-0-0-1

while factory-set for natural gas (typically 3

and safety switches to ensure precise chiller sequence control

this sensor delivers highly accurate and stable temperature feedback in hydronic applications

Use a backup wrench to avoid twisting the copper spun housing and apply a small amount of refrigerant oil to the flare face to ensure a gas-tight seal without over-torquing

Lochinvar & A.O. Smith 100111982 Transformer 340155-7024 the MC-421 actuator is aThe 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