identical replacement for the C-309-S-T-HH

the 117-7114 is built to withstand rigorous commercial cycles

this hardwired thermostat requires both the R (24 VAC) and C (Common) wires for operation

Inspect the tray for cracks

Specifically engineered for seamless integration with Reznor UDAP

Lochinvar & A.O. Smith 100109972 Control Box 319825-402 identical replacement for the C-309-S-T-HHThe Lochinvar & A. O. Smith 100109972 Control Box is a critical replacement component designed for precise sequence control and safety monitoring in high efficiency commercial boilers and water heaters. Engineered to interface seamlessly with the integrated control system, this module manages ignition timing, flame sensing, and temperature modulation. Technicians frequently utilize this OEM replacement part to resolve control board failure symptoms