the water level must be restored to the "Normal" operating range before the manual reset button on the head assembly can be depressed to restore power to the burner circuit

The Utica-Dunkirk 240009863 is a high-limit immersion aquastat engineered for precise thermal regulation in hydronic boiler systems

Manual Reset Safety: Featuring a manual reset mechanism that prevents automatic cycling

making it a versatile component for professional service calls

maximizing thermal output while reducing carbon monoxide risks

Lochinvar & A.O. Smith 100338899 Gasket 322027-701 the water level must beThe Lochinvar & A. O. Smith 100338899 Gasket is a critical OEM replacement part engineered for high performance Low NOx heating systems. Specifically designed for use as a Spark Rod BTL Gasket, this component ensures a high integrity seal between the spark igniter assembly and the burner tube locator (BTL). As a veteran technician knows, maintaining a precise seal in the combustion chamber is vital for preventing gas leaks and ensuring consistent