Configuration of connection pipe and additional volume of refrigerant
1. Standard length of connection pipe
5 m - 7.5 m - 8 m
2. Min length of connection pipe
For the unit with standard connection pipe of 5 m, there is no limitation for the min length of connection
pipe. For the unit with standard connection pipe of 7.5 m and 8 m, the min length of connection pipe is
3 m.
3. Max length of connection pipe
Sheet 1 Max length of connection pipe Unit: m
Max length of
connection pipe
Max length of
connection pipe
Capacity
Capacity
24000 Btu/h
(
7032 W
)
5000 Btu/h
(1465 W)
15
25
7000 Btu/h
(2051 W)
28000 Btu/h
(
8204 W
)
15
30
9000 Btu/h
(2637 W)
36000 Btu/h
(
10548 W)
15
30
42000 Btu/h
(
12306 W
)
12000 Btu/h
(3516 W)
30
20
48000 Btu/h
(14064 W)
18000 Btu/h
(5274 W)
30
25
4. The calculation method of additional refrigerant oil and refrigerant charging amount after prolonging con-
nection pipe After the length of connection pipe is prolonged for 10 m at the basis of standard length, you
should add 5 ml of refrigerant oil for each additional 5 m of connection pipe.
The calculation method of additional refrigerant charging amount (on the basis of liquid pipe):
(1) Additional refrigerant charging amount = prolonged length of liquid pipe additional refrigerant charging
amount per meter.
(2) When the length of connection pipe is above 5 m, 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 Sheet 2.
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