meaning the contacts will re-close once the temperature drops to the 110F reset point

it provides an exact drop-in fit for specific furnace models

Replacing the user interface board often resolves communication faults between the main processor and the display

extending the service life in harsh water conditions

and the valve assembly

Lochinvar & A.O. Smith 100171922 Valve 328140-751 meaning the contacts will re-closeThe Lochinvar & A. O. Smith 100171922 is a heavy duty 3 way control valve assembly engineered for precise hydronic flow management in high capacity commercial boiler systems. This 2 inch NPT mixing and diverting valve features a robust brass body with plated brass trim, delivering a high 109 Cv flow coefficient. It utilizes an equal percentage flow characteristic on Port A to AB for accurate modulation and a linear flow profile on Port B to AB. Driven