SC Heating Practice Questions - South Carolina Heating Contractor Examination Exam

A low-water cutoff on a steam or hot-water boiler must automatically do which of the following?

Increase firing rate when the water line drops Stop the combustion operation when the water level drops below the lowest safe water level established by the manufacturer Open the safety valve Bypass the operating aquastat

Correct Answer:

Stop the combustion operation when the water level drops below the lowest safe water level established by the manufacturer

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