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

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A fixed-orifice R-410A system has a suction pressure corresponding to 40°F saturated evaporator temperature. The suction-line temperature at the evaporator outlet is 58°F. Manufacturer target superheat is 12°F. What is the superheat and the most likely charge condition?

18°F superheat; overcharged 98°F superheat; compressor floodback 12°F superheat; charge is correct 18°F superheat; undercharged or underfed

Correct Answer:

18°F superheat; undercharged or underfed

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