Mitsubishi Electric MUZ-GL12NA Service Manual page 23

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
MUZ-GL09NA
MUZ-GL09NAH
MUY-GL09NA
MUZ-GL12NA
MUZ-GL12NAH
MUY-GL12NA
MUZ-GL15NA
MUZ-GL15NAH
MUY-GL15NA
MUZ-GL18NA
MUZ-GL18NAH
MUY-GL18NA
MUZ-GL24NA
MUZ-GL24NAH
MUY-GL24NA
ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Outdoor unit
Model
precharged
MUZ-GL09NA -
U1
MUZ-GL09NA -
U2
MUZ-GL09NAH - 2 lb. 5 oz.
U1
MUZ-GL09NAH -
U2
MUY-GL09NA -
U2
MUZ-GL09NA -
U8
MUZ-GL09NAH -
U8
MUY-GL09NA -
U1
MUZ-GL12NA
MUZ-GL12NAH 2 lb. 9 oz.
MUY-GL12NA
MUZ-GL15NA
MUZ-GL15NAH
MUY-GL15NA
OBH733J
Refrigerant piping: ft.
Max. Length Max. Height difference
A
65
65
100
100
Indoor
unit
Max. Height
difference
B
25
0
B
40
40
50
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)
23
Piping size O.D: in.
Gas Liquid
3/8
1/2
1/2
5/8
50 60
5.40 7.56
1/4
1/4
1/4
3/8
65
8.64