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

What is the purpose of a Hartford loop on a gravity-return low-pressure steam heating system?

To arrange the return so water in the boiler cannot be forced out below the safe water level To replace the steam safety valve To provide combustion air to the burner To superheat the steam leaving the boiler

Correct Answer:

To arrange the return so water in the boiler cannot be forced out below the safe water level

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