SC Heating Practice Questions - South Carolina Heating Contractor Examination Exam

Every hot-water heating system shall have which of the following, except in a drain-back collector loop?

A steam header and Hartford loop An expansion tank, closed or open type, rated for the system pressure A superheater Two bottom blowoff valves in series on every residential wall-hung boiler

Correct Answer:

An expansion tank, closed or open type, rated for the system pressure

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