By cycling the fan motor

The 7-inch probe is strategically positioned to sense temperatures at a specific point in the airflow

This is a single-timing heat sequencer

This 1-5/8 inch copper elbow is compatible with standard 95/5 solder as well as high-temperature silver brazing alloys typically used in refrigeration

Utica-Dunkirk 14662052 Gas Valve Els PW 17895 By cycling the fan motorReplace worn or malfunctioning ignition controls with the Utica Dunkirk 14662052 Gas Valve, a field proven intermittent pilot gas valve designed for high efficiency boiler and furnace applications. This 24V gas valve is engineered for a 3. 5" WC pressure setting and features a standard 1 2" NPT connection, making it an essential OEM replacement for Dunkirk PWB, PWXL, and XEB Series II boilers, as well as several Utica SVB and UH16 Series steam units.