Mitsubishi Electric Mr.Slim MUZ-FE09NA Service Manual page 8

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
MUZ-FE09NA
MUZ-FE12NA
MUZ-FE18NA
ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Model Outdoor unit precharged
MUZ-FE09NA
MUZ-FE12NA
NOTE: Refrigerant piping exceeding 33 ft. requires additional refrigerant charge according to the calculation.
Outdoor unit
Model
precharged
MUZ-FE18NA 4 lb. 3 oz.
Refrigerant piping: ft.
Max. Length Max. Height difference
A
65
100
Indoor
unit
Max. Height
difference
B
2 lb. 9 oz.
33 40
0 4.14
B
40
50
Max. Length
A
Outdoor unit
Refrigerant piping length (one way): ft.
25 30
0 1.62
Calculation: X oz. = 1.08/5 oz. / ft. × (Refrigerant piping length (ft.) - 25)
Refrigerant piping length (one way): ft.
50 60
10.06 15.98
Calculation: X oz. = 2.96/5 oz. / ft. × (Refrigerant piping length (ft.) - 33)
8
Piping size O.D: in.
Gas
3/8
5/8
40 50 60
4.86 8.10 11.34
70 80
21.90 27.82 33.74
Liquid
1/4
3/8
65
12.96
90 100
39.66