Service manual

22
Max. Length
A
Max. Height
difference
B
Indoor
unit
Outdoor unit
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
Refrigerant piping: ft. Piping size O.D: in.
Max. Length
A
Max. Height difference
B
Gas Liquid
MUZ-A09NA
MUZ-A12NA
65 40
3/8 1/4
MUZ-A15NA
MUY-A15NA
MUZ-A17NA
MUY-A17NA
1/2 1/4
MUZ-A24NA
MUY-A24NA
MUZ-GA24NA
MUY-GA24NA
100 50 5/8 1/4
ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)
Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Model
Outdoor unit
precharged
Refrigerant piping length (one way): ft.
25 30 40 50 60 65
MUZ-A09NA
MUZ-A09NA -
U1
MUZ-A12NA
2 lb. 5 oz.
0 1.62 4.86 8.10 11.34 12.96
MUZ-A09NA -
1
MUZ-A09NA -
U2
2 lb.
MUZ-A15NA
MUY-A15NA
MUZ-A17NA
MUY-A17NA
2 lb. 7 oz.
Calculation: X oz. = 1.62/5 oz. / ft. × (Refrigerant piping length (ft.) - 25)
Model
Outdoor unit
precharged
Refrigerant piping length (one way): ft.
25 30 40 50 60 70 80 90 100
MUZ-A24NA
MUY-A24NA
MUZ-GA24NA
MUY-GA24NA
4 lb. 0 1.08 3.24 5.40 7.56 9.72 11.88 14.04 16.20
Calculation: X oz. = 1.08/5 oz. / ft. × (Refrigerant piping length (ft.) - 25)
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.