Max. Refrigerant Piping Length; Max. Height Difference; Additional Refrigerant Charge - Mitsubishi Electric MUZ-FH09NA Service Manual

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
MUZ-FH09NA
MUZ-FH09NAH
MUZ-FH12NA
MUZ-FH12NAH
MUZ-FH15NA
MUZ-FH15NAH
ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Outdoor unit
Model
precharged
MUZ-FH09NA
2 lb. 9 oz.
MUZ-FH09NAH
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Outdoor unit
Model
precharged
MUZ-FH12NA
2 lb. 9 oz.
MUZ-FH12NAH
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Outdoor unit
Model
precharged
MUZ-FH15NA
3 lb. 7 oz.
MUZ-FH15NAH
OBH584A
Refrigerant piping: ft.
Max. Length

Max. Height difference

A
65
100
Indoor
unit
Max. Height
difference
B
25
0
25
0
25 30
0 1.08
B
40
50
Max. Length
A
Outdoor unit
Refrigerant piping length (one way): ft.
30 40
1.08 3.24
Calculation: X oz. = 1.08/5 oz./ft. × (Refrigerant piping length (ft.) - 25)
Refrigerant piping length (one way): ft.
30 40
1.62 4.86
Calculation: X oz. = 1.62/5 oz./ft. × (Refrigerant piping length (ft.) - 25)
Refrigerant piping length (one way): ft.
40 50 60
3.24 5.40 7.56
Calculation: X oz. = 1.08/5 oz./ft. × (Refrigerant piping length (ft.) - 25)
12
Piping size O.D: in.
Gas Liquid
3/8
1/2
50 60
5.40 7.56
50 60
8.10 11.34
70 80 90
9.72 11.88 14.04
1/4
1/4
65
8.64
65
12.96
100
16.20