Exam (elaborations)
G2 Gas Technician Module 12 Questions and Answers(A+ Solution guide)
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What does an Aquastat do? - Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? - Automatic safety control (normally closed). Senses water level in the boiler. If level drops the switch opens ...
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