Lochinvar & A.O. Smith 100297134 Flame Sensor 321702-401 this 550001927 pilot assembly includes

this 550001927 pilot assembly includes the necessary LP orifice (PB00208 / H/W 390686-36)

Versatile Installation: Supports both NPT threaded and flange mounting options to simplify integration into existing gas trains

protecting sensitive downstream gas valves and burner orifices

Its 2-wire configuration significantly reduces cabling requirements and commissioning time for contractors managing large-scale HVAC current sensing projects

The TEFC (Totally Enclosed Fan Cooled) design protects internal components from airborne debris and moisture

Lochinvar & A.O. Smith 100297134 Flame Sensor 321702-401 this 550001927 pilot assembly includesThe Lochinvar & A. O. Smith 100297134 Flame Sensor is a critical genuine OEM replacement part engineered for precision flame rectification in high efficiency gas fired systems. Designed for use in Lochinvar boilers and A. O. Smith water heaters, this sensor monitors the burner flame to ensure the ignition control module receives a continuous microamp signal. If the flame signal is lost or carries high resistance, the system initiates a safety lockout