the 440-540-000 includes the burner tube and the attached pilot bracket

Simplified Wiring: Standardized terminal layout allows for straightforward integration into existing parallel circuit 240V systems

This genuine Lennox part (also identified as 39F9501) ensures the gas valve remains open only when a stable ignition is detected

By utilizing OEM valve accessories like the AM-732

Lochinvar & A.O. Smith 100170488 Lower Sensor 30067439-890 the 440-540-000 includes the burnerThe Lochinvar & A. O. Smith 100170488 Lower Sensor is a critical thermistor based component engineered for precise thermal monitoring in high efficiency water heating systems. As an exact replacement for the TST1188 sensor, this part ensures the control board receives accurate resistance feedback from the lower portion of the tank. For technicians troubleshooting Lochinvar water heater error codes or A. O. Smith temperature sensor faults, installing