| thermocouple |
Heat from the pilot will generate 24mv to 30mv. This in turn holds the electomagnetic coil open, allowing gas to enter the valve body and hold a pilot flame. It also acts as a safety device that will shut off the gas supply to the main burner and pilot when no flame (heat) is sensed.
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| thermocouple |
A small electric generator. Electron flow between the hot junction of 1200 degrees F and the cold junction of 600 degrees F creates millivoltage
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