Installation Of Connection Pipe - Gree GMV-140WL/A-T User Manual

DC Inverter Multi VRF System User Manual
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.
Rated capacity of IDU C(kW)
2.8＜C≤5.0
5.0＜C≤14.0
14.0＜C≤16.0
16.0＜C≤28.0
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.

4.3 Installation of Connection Pipe

4.3.1 Precautions for the Installation of Connection Pipe
(1) Conform to the following principles during pipe connection: Connection pipe should be as
short as possible, so is the height difference between indoor and outdoor units. Keep the
number of bends as little as possible. Radius of curvature should be as large as possible.
(2) Weld the connection pipe between indoor and outdoor units. Please strictly follow the
requirements for welding process. Rosin joint or pin hole is not allowed.
(3) Radius of bending parts should be over 200mm. Note that pipes cannot be repeatedly
C≤2.8
Fig. 9
Gas pipe (mm)
Φ9.52
Φ12.7
Φ15.9
Φ19.05
Φ22.2
11
Liquid pipe (mm)
Φ6.35
Φ6.35
Φ9.52
Φ9.52
Φ9.52