15
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
m
ethod of additional refrigerant charging
am
ount (on the
b
asis
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 di
f
ferent according to the diameter of liquid pipe. See the
following sheet.
Additional refrigerant charging amount
=
prolonged length of liquid pipe
×
additional refrigerant charging amount per meter
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 di
fference.
Configuration of connection pipe
