Mitsubishi Electric SVZ-KP18NA Service Manual page 10

ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)
Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Outdoor unit
Model
precharged
SUZ-KA09NA 1 lb. 16 oz.
SUZ-KA12NA
2 lb. 9 oz.
SUZ-KA15NA
Outdoor unit
Model
precharged
SUZ-KA18NA 3 lb. 16 oz.
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
TCH022
Refrigerant piping length (one way): ft.
25 30
0 1.62
Calculation: X oz. = 1.62/5 oz. / ft. × (Refrigerant piping length (ft.) - 25)
Refrigerant piping length (one way): ft.
25 30 40
0 1.08 3.24
Calculation: X oz. = 1.08/5 oz. / ft. × (Refrigerant piping length (ft.) - 25)
40 50
4.86 8.10
50 60 70
5.40 7.56 9.72
10
60 65
11.34 12.96
80 90 100
11.88 14.04 16.20