Gree GWH09ACC-K6DNA1A/I Manuel D'utilisateur page 67

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
Sheet 1 Max length of connection pipe
capacity
5000Btu/h
(1465W)
7000Btu/h
(2051W)
9000Btu/h
(2637W)
12000Btu/h
(3516W)
18000Btu/h
(5274W)
4. The calculation method of additional refrigerant oil and refrigerant charging amount
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):
(1) Additional refrigerant charging amount= prolonged length of liquid pipe × additional
refrigerant charging amount per meter
(2) 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 Sheet 2.
Max length of
connection pipe
15
15
15
20
25
capacity
24000Btu/h
(7032W)
28000Btu/h
(8204W)
36000Btu/h
(10548W)
42000Btu/h
(12306W)
48000Btu/h
(14064W)
19
Unit: m
Max length of
connection pipe
25
30
30
30
30