The Johnson Controls S66AA-1 is specifically designed for permanent split capacitor (PSC) and shaded pole motors that are rated for phased-array speed control

Always verify the Micro Board version before ordering

Serviceable Design: The two-bolt take-apart configuration allows for rapid TXV orifice assembly replacement or cleaning without breaking line connections

such as signaling a fan to start or a boiler to fire once the actuator has reached its position

Lochinvar & A.O. Smith 100109597 Bracket 319852-301 The Johnson Controls S66AA-1 isThe Lochinvar & A. O. Smith 100109597 Bracket is a critical OEM replacement part designed specifically for securing the water heater thermostat against the tank for precise thermal conductivity. As a veteran technician knows, the integrity of the thermostat mounting bracket determines the accuracy of temperature sensing; if the thermostat is not held flush against the vessel, it risks delayed response times or high limit (ECO) trips. This genuine