Lochinvar & A.O. Smith 100109908 Flame Sensor 320819-301 Always verify the airflow direction

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

Reduced Maintenance: Minimizes the need for frequent manual packing adjustments by automatically compensating for wear

For systems requiring the valve to close on temperature rise

color codes signify specific temperature ratings

This 2C configuration is ideal for technicians looking to optimize HVAC system efficiency in cold-weather applications where low ambient temperatures threaten internal lubrication

Lochinvar & A.O. Smith 100109908 Flame Sensor 320819-301 Always verify the airflow directionThe 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