3
6
Configuration of connection pipe
1. Standard length of connection pipe
● 5m, 7.5m, 8m.
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 ×
additional refrigerant charging amount per meter
● When the length of connection pipe is above 5m, add refrigerant according to
the prolonged length of liquid pipe. The additional refrigerant charging amount
per meter is different according to the diameter of liquid pipe. See the
following sheet.
Cooling
capacity
Cooling
capacity
5000Btu/h
(1465W)
24000Btu/h
(7032W)
7000Btu/h
(2051W)
28000Btu/h
(8204W)
9000Btu/h
(2637W)
36000Btu/h
(10548W)
12000Btu/h
(3516W)
42000Btu/h
(12306W)
18000Btu/h
(5274W)
48000Btu/h
(14064W)
Max height
difference
Max height
difference
Max length
of connec-
tion pipe
Max length
of connec-
tion pipe
15
25
5
10
15
30
5
10
15
30
5
20
20
30
10
20
25
30
10
20
2.Min. length of connection pipe is 3m.
3.Max. length of connection pipe and max. high difference.
