SC Air Conditioning Practice Questions - South Carolina Air Conditioning Contractor Examination Exam

Closed-loop chilled-water (or other closed mechanical hydronic) systems require water treatment primarily to:

Raise the loop pressure above the refrigerant high-side pressure Control corrosion, scale, and biological growth that foul tubes and destroy pumps Convert the loop into a potable-water supply Eliminate the need for an expansion tank

Correct Answer:

Control corrosion, scale, and biological growth that foul tubes and destroy pumps

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