AHU-KIT
16
Use copper wire only as unit’s power cord. Operating temperature should be within its rated value
①
Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at 40°C(104
℉
)ambient temperature when laying across plastic pipe. Air switch is D type and used at 40°C(104
℉
). If
actual installation condition varies, please lower the capacity appropriately according to the specifications of
power cord and air switch provided by manufacturer.
②
Install cut-off device near the unit. The minimum distance between each stage of cut-off device should be 3
mm(1/8 in) (The same for both indoor unit and outdoor unit)
3.5 Piping Requirements
3.5.1 Selection of Piping Requirements
(1) Ensure the inside of the pipes is clean and no foreign materials.
(2) Pipe specifications:
R410A System
Pipe Diameter mm(in.
）
Wall Thickness mm(in.)
Temper grade of piping material
Φ6.35
（
1/4
）
≥0.8(1/32)
O
Φ9.52
（
3/8
）
≥0.8(1/32)
O
Φ12.70
（
1/2
）
≥0.8(1/32)
O
Φ15.9
（
5/8
）
≥1.0(3/76)
O
Φ19.05
（
3/4
）
≥1.0(3/76)
1/2H
Φ22.2
（
7/8
）
≥1.2(1/21)
1/2H
Φ28.6
（
1-1/8
）
≥1.2(1/21)
1/2H
Φ34.90
（
1-3/8
）
≥1.3(2/39)
1/2H
Φ41.30
（
1-5/8
）
≥1.5(1/17)
1/2H
3.5.2Piping Design
When one AHU-KIT is connected to one AHU, the piping diagram is as follows:
Fig.3.5.1 One AHU-KIT to one AHU
