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

On a steam heating boiler, a Hartford loop is installed in the return piping primarily to do which of the following?

Increase the boiler’s steaming rate by raising the water line Prevent the boiler water from being siphoned out through the return if a return line fails Replace the need for a low-water fuel cutoff Convert the steam boiler to a closed hot-water heating system

Correct Answer:

Prevent the boiler water from being siphoned out through the return if a return line fails

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