Lochinvar & A.O. Smith 100109908 Flame Sensor 320819-301 Simple plug-and-play wiring harness reduces

Simple plug-and-play wiring harness reduces field labor time and prevents common wiring errors during installation

Always verify the airflow direction of the existing fan blade before installation

The Over-Pressure Protection Device (OPD) is a safety mechanism required for regulators used on piping systems with inlet pressures exceeding 2 PSI (up to 5 PSI) to protect downstream equipment in the event of a regulator failure

For systems requiring the valve to close on temperature rise

the 110851 is calibrated with a natural gas pilot orifice

Lochinvar & A.O. Smith 100109908 Flame Sensor 320819-301 Simple plug-and-play wiring harness reducesThe Lochinvar & A. O. Smith 100109908 Flame Sensor is a critical OEM replacement part designed for precise flame rectification in high efficiency water heaters and boilers. As a seasoned tech, you know that a failing flame sensor rod is the primary culprit behind intermittent data signals and "no flame detected" lockouts. This genuine factory part (formerly identified as part number 9004520215) ensures the flame sensing circuit maintains the microamp