Pipe Size Selection & Limitation; Additional Charge Calculation - Fujitsu AR C72LHTA Series Design & Technical Manual

7. PIPE SIZE SELECTION & LIMITATION
MODEL : AO  A72LALT, AO  A90LALT
„ „
Pipe diameter
[mm (in.)] Gas pipes
Piping length
Max. height difference (H1)
<Indoor unit to outdoor unit>
8.

ADDITIONAL CHARGE CALCULATION

MODEL : AO  A72LALT, AO  A90LALT
„ „
Refrigerant type
Refrigerant amount
Refrigerant charge
z „
Refrigerant pipe size
[mm (in.)]
Standard
Liquid 12.70 (1/2)
Gas 25.40 (1)
Size down
Liquid 12.70 (1/2)
Gas 22.22 (7/8)
Size up
Liquid 12.70 (1/2)
Gas 28.58 (9/8)
L1
Liquid pipes
Max. piping length (L1)
(Max. chargeless length)
Min. piping length (L1)
R410A
g 11,200
~20 m 30 m 40 m
None 1,100 g 2,200 g
~20 m 30 m 40 m
None 1,100 g 2,200 g
~20 m 30 m 40 m
None 1,100 g 2,200 g
- (02 - 14) -
H1
Size down Standard
12.70 (1/2)
22.22
(7/8)
[m (m)] 75 (20)
[m]
[m]
Piping length
50 m 60 m 70 m
3,300 g 4,400 g 5,500 g
50 m 60 m 70 m
3,300 g 4,400 g 5,500 g
50 m
3,300 g
Size up
25.40 28.58
(1) (9/8)
75 (20) 50 (20)
5
30
75 m g/m
6,050 g 110 g/m
75 m g/m
6,050 g 110 g/m
g/m
110 g/m