GIA giatsu MAMBA Manuel De L'utilisateur Et D'installation page 48

Configuration of connection pipe
1. Standard length of connection pipe
● 5m, 7.5m, 8m.
2. Min length of connection pipe
For the unit with standard connection pipe of 5m, there is no limitation for the min length
of connection pipe. For the unit with standard connection pipe of 7.5m and 8m, the min
length of connection pipe is 3m.
3. Max. length of connection pipe and max. high difference.
Cooling capacity
5000Btu/h (1465W)
7000Btu/h (2051W)
9000Btu/h (2637W)
12000Btu/h (3516W)
18000Btu/h (5274W)
4. The additional refrigerant oil and refrigerant charging required after prolonging connection
pipe
● After the length of connection pipe is prolonged for 10m at the basis of standard length,
you should add 5ml of refrigerant oil for each additional 5m of connection pipe.
● The calculation method of additional refrigerant charging amount (on the basis of liquid
pipe): Additional refrigerant charging amount = prolonged length of liquid pipe ×
● Basing on the length of standard pipe, add refrigerant according to the requirement
as shown in the table. The additional refrigerant charging amount per meter is different
according to the diameter of liquid pipe. See the following sheet.
Diameter of connection pipe Indoor unit throttle
Liquid pipe(mm)
Φ6
Φ6 or Φ9.52
Φ12
Φ16
Φ19
Φ22.2
Note:
The additional refrigerant charging amount in Sheet is recommended value, not compulsory.
Max length of
connection pipe
15
15
15
20
25
additional refrigerant charging amount per meter
Additional refrigerant charging amount for R32
Gas pipe(mm)
Φ9.52 or Φ12
Φ16 or Φ19
Φ19 or Φ22.2
Φ25.4 or Φ31.8
-
-
Cooling capacity
24000Btu/h (7032W)
28000Btu/h (8204W)
36000Btu/h (10548W)
42000Btu/h (12306W)
48000Btu/h (14064W)
Cooling only,
cooling and heating
(g/m)
16
40
80
136
200
280
46
Max length of
connection pipe
25
30
30
30
30
Outdoor unit throttle
Cooling and
Cooling only
heating
(g/m)
12
12
24
48
200
280
(g/m)
16
40
96
96
200
280