NV C-1 Plumbing And Heating Practice Questions - Nevada C-1 Plumbing And Heating Contractor Examination Exam

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A steam heating boiler is being placed in service. Which safety control is required to shut off the fuel if the water level in the boiler drops below a safe point?

A high-limit aquastat only A listed low-water fuel cutoff A circulating-pump flow switch only A flue-gas carbon-monoxide sensor

Correct Answer:

A listed low-water fuel cutoff

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