- (02 - 14) -
O
U
TD
O
O
R U
N
IT
AO
A
72
-9
0L
A
LT
O
U
TD
O
O
R U
N
IT
AO
A
72
-9
0L
A
LT
PIPE SIZE SELECTION & LIMITATION
7.
MODEL : AO
A72LALT, AO
A90LALT
ADDITIONAL CHARGE CALCULATION
8.
MODEL : AO
A72LALT, AO
A90LALT
Refrigerant charge
z
Refrigerant type
R410A
Refrigerant amount
g
11,200
Refrigerant pipe size
[mm (in.)]
Piping length
Standard
~20 m
30 m
40 m
50 m
60 m
70 m
75 m
g/m
Liquid
Gas
12.70 (1/2)
25.40 (1)
None
1,100 g
2,200 g
3,300 g
4,400 g
5,500 g
6,050 g
110 g/m
Size down
~20 m
30 m
40 m
50 m
60 m
70 m
75 m
g/m
Liquid
Gas
12.70 (1/2)
22.22 (7/8)
None
1,100 g
2,200 g
3,300 g
4,400 g
5,500 g
6,050 g
110 g/m
Size up
~20 m
30 m
40 m
50 m
g/m
Liquid
Gas
12.70 (1/2)
28.58 (9/8)
None
1,100 g
2,200 g
3,300 g
110 g/m
Size down
Standard
Size up
Pipe diameter
Liquid pipes
12.70 (1/2)
[mm (in.)] Gas pipes
22.22
(7/8)
25.40
(1)
28.58
(9/8)
Piping length
Max. piping length (L1)
(Max. chargeless length)
[m (m)]
75 (20)
75 (20)
50 (20)
Min. piping length (L1)
[m]
5
Max. height difference (H1)
<Indoor unit to outdoor unit>
[m]
30
L1
H1
