SC Boiler Installation Practice Questions - South Carolina Boiler Installation Contractor Examination Exam

On an automatically fired steam heating boiler, the low-water fuel cutoff shall cut off the fuel supply:

Before the water surface falls below the lowest visible part of the water gage glass Only when the operating pressure control also trips When stack temperature exceeds 400°F After the gage glass has run completely dry for two minutes

Correct Answer:

Before the water surface falls below the lowest visible part of the water gage glass

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