Appliancemate 52W29 Lennox Flame Sensor Replacement Part for Armstrong, Ducane Furnaces - Replaces 52W2901 31L7101 31L71 LB-74940A 28PV41

Rod max temperature: 2190 deg. F Ceramic max temperature: 1000 deg. F Insulation max temperature: 250 deg. F Fit Lennox Model :G40, G41, G51, G60, G61 and G71,etc. Not all applicable models are listed,if you have any question please contact us. A furnace flame sensor is a safety designed to detect flame. If the sensor does not detect flame, it shuts the gas valve off, preventing raw gas from dumping into your home. Over time, a flame sensor may loose it's ability to sense the flame, even when the flame is present. The distance from the base (metal tab where you fasten the sensor down) to the very tip of the sensor, is 3 5/8".   If the sensor you are replacing is of a different length or orientation, your furnace probably uses a different model of sensor.  If you send me the model number of your furnace,  i would be happy to look up which flame sensor you need. There are no instructions included in this.If you want too know how to use or install it,Please contact us,we will provide help as much as possible.

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