GAS SAFETY CONTROLS part 4 looking at zero gas valves, thermistors, and gas meter controls.

Описание к видео GAS SAFETY CONTROLS part 4 looking at zero gas valves, thermistors, and gas meter controls.

Derek shows us in this final part of gas safety controls how zero governor gas valves work, how a gas meter is controlled and finally how thermistors and high limit stats work and how to test them.

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