520139 LB WHITE SENSOR FLAME W/HARDWARE

LB White part number 520139 is a Flame Sensor with hardware, used as a replacement part for various LB White forced-air heaters, particularly Hot Surface Ignition (HSI) models like the Guardian 250 (AW250), and it replaces the older part number 20139. This sensor is a crucial safety component that confirms the presence of a flame and shuts off fuel if no flame is detected, suitable for both LP (propane) and NG (natural gas) units.

Key Details:

Description: Flame Sensor with Hardware.

Function: Detects flame; part of the safety circuit.

Replaces: Part #20139.

Used On: LB White Guardian 250 (AW250) HSI models, among others.

Type: Available for LP & NG (Propane & Natural Gas).