Lochinvar & A.O. Smith 100111010 Control 321894-709 Turning the screw counter-clockwise decreases

Turning the screw counter-clockwise decreases the pressure setting

preventing intermittent signal loss that can lead to unexpected lockout or short-cycling

Accurate Rectification: Provides high-sensitivity flame detection to prevent the control module from cutting the gas valve during operation

The Watts R75-03C is a professional-grade 3/8" NPT air regulator engineered for precision pressure management in demanding pneumatic and industrial air handling systems

Precise Control Logic: The 4-8 PSI spring range allows for accurate sequencing and calibrated response to pneumatic signals

Lochinvar & A.O. Smith 100111010 Control 321894-709 Turning the screw counter-clockwise decreasesThe Lochinvar & A. O. Smith 100111010 Electronic Control is a critical integrated component designed for high efficiency commercial water heater systems, specifically engineered for the SUF300N model series. As a veteran grade HVAC replacement part, this SUF300N control board manages the complex sequence of operations, including ignition timing, flame sensing, and blower speed regulation. It serves as the central intelligence for condensing water