DC Inverter Multi VRF System User Manual
10
Outdoor
Indoor
Pipe between
indoor branches
Fig.8
Total capacity of downstream indoor units C (kW)
Gas pipe(mm)
Liquid pipe(mm)
C
≤
5.6
Φ12.7
Φ6.35
5.6
＜
C
≤
14.2
Φ15.9
Φ9.52
14.2
＜
C
≤
22.0
Φ19.05
Φ9.52
4.2.6 Dimension of Pipe between Indoor Branch and IDU
Dimension of pipe between indoor branch and IDU should be consistent with the dimension of
indoor pipe.
Outdoor
Indoor
Indoor branches
Pipe between indoor branch and IDU
Fig.9
Rated capacity of IDU C(kW)
Gas pipe(mm)
Liquid pipe(mm)
C
≤
2.8
Φ9.52
Φ6.35
2.8
＜
C
≤
5.0
Φ12.7
Φ6.35
5.0
＜
C
≤
14.0
Φ15.9
Φ9.52
14.0
＜
C
≤
16.0
Φ19.05
Φ9.52
16.0
＜
C
≤
28.0
Φ22.2
Φ9.52
Note:
If the distance between IDU and its nearest branch is over 10m, then the liquid pipe of IDU
(rated capacity ≤5.0kW) shall be enlarged.
