The factory charge in a split system, using R-22, shows 6 lb. 8 oz. in the outdoor condensing unit and 2 oz. in the evaporator. The 3/8" liquid line contains 0.48 oz. per foot and the 7/8" suction line contains 0.10 oz. per foot. The refrigerant lines are 30' long. What is the correct refrigerant charge for this system?
A. 6 lb. 10 oz.
B. 6 lb. 15 oz.
C. 7 lb. 7 oz.
D. 7 lb. 11 oz.
Answer: D
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