On Sept. 1,2012, standing pilots on new equipment were done away with. This only pertains, however, to new equipment, not existing equipment. There are still many systems, both heating and hot water, that use a thermocouple as a pilot safety system. This series of articles will address these systems as to how they operate, their many uses arid how to diagnose and troubleshoot thermocouple systems. These systems appear on both propane and natural gas equipment. The fact that so many are still operating makes this presentation very important.
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