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Lv 4
? asked in Home & GardenMaintenance & Repairs · 9 years ago

Change thermal couple on propane tank heater?

Does the length of thermal couple matter?

2 Answers

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  • Propane Guy
    Lv 7
    9 years ago
    Favorite Answer

    Actually it is called a "thermocouple"...

    Anyway, I assume you mean the length of the tube between the tip and the threaded connection. That distance is not critical, but should be kept as short as practical. The length of the tip however CAN be important. The pilot flame must contact the tip properly or it will not generate the required output to hold the gas valve open. Especially when using universal thermocouples rather than original manufacturer parts, you need to pay close attention to this.

    Source(s): 22 years experience in the propane business and a licenced gas fitter.
  • ?
    Lv 5
    9 years ago

    No, but don't get one that is so long that you have to bend it in circles.

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