DC Inverter Duct Type Air Conditioner Installation and Operation Manual
40
8.2.8 Selection of Connecting Pipe
The refrigerant is R410A, GWP=2020 ODP=0
Table 8
Item
Model
Size of Fitting Pipe
(Inch)
Max.
Pipe
Length
(m)
Max. Height
Difference
between
Indoor Unit and
Outdoor Unit
(m)
Amount of Additional
Refrigerant to be Filled
(For Extra Length of
Pipe)
Liquid Gas
20 15 30g/m
1/4 1/2
ASD-18AIA, ASGE-18AIA WK
3/8 5/8
30 15
60 g/m
ASD-24AIA, ASGE-24AIA WK
ASD-36AIA, ASGE-36AIA WK
ASD-36AIA, ASGE-36AIA-3 WK
50 30
ASD-42AIA, ASGE-42AIA-3 WK
Note:
1. The standard pipe length is 5m. When the length (L) of the connecting pipe is less than or equals 7m,
there is no need to add refrigerant. If the connecting pipe is longer than7m, it is required to add refrigerant. In
the above table, the amounts of refrigerant to be added for the models are listed for each additional meter of
pipe length.
2. The pipe wall thickness shall be 0.5-1.0 mm and the pipe wall shall be able to withstand the pressure of
6.0 MPa.
3. The longer the connecting pipe, the lower the cooling effect and the heating effect.
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