SC HVAC Contractor Practice Questions - South Carolina HVAC Contractor License Exam

What is the proper refrigerant charge verification method for a system with a TXV in South Carolina's warm climate?

Superheat method only Subcooling method — measure liquid line temperature and compare to manufacturer's specified subcooling Add refrigerant until the sight glass is clear Use the ambient temperature only

Correct Answer:

Subcooling method — measure liquid line temperature and compare to manufacturer's specified subcooling

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