Nstallation Of Onnection Ipe - Gree GMV-S120WL/A-S Manuel Du Propriétaire

4.2.6 Dimension of Pipe between Indoor Branch and Indoor Unit
Dimension of pipe between indoor branch and indoor unit should be consistent with the dimension of
indoor pipe.
Rated capacity of indoor unit 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 indoor unit and its nearest branch is over 10m, then for the indoor unit whose
rated capacity is equal to or below 5.0kW, its liquid pipe shall be enlarged to a bigger size.
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 unit, outdoor unit and hydro box. Keep the
number of bends as little as possible. Radius of curvature should be as large as possible.
(2) Install the connection pipe by braze welding. Please strictly follow the requirements for welding
process. Rosin joint or pin hole is not allowed.
(3) When laying the pipe, be careful not to distort it. Radius of bending parts should be over 200mm.
Note that pipes cannot be repeatedly bent or stretched; otherwise the material will get harder. Do not
bend or stretch the pipe for more than 3 times at the same position.
4.3.2 Flaring Process
(1) Cut the connection pipe with a pipe cutter to prevent it from being unshaped.
(2) Remove burrs with the cut surface facing downward so that the chips do not enter the pipe.
(3) Remove the flare nuts that are connecting indoor connection pipe, hydro box connection pipe and
outdoor unit. Then use flaring tool to put the flare nut onto the pipe (as shown in Fig.10).
(4) Check if the flare part is flaring evenly and if there is any crack.
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C≤2.8
Fig.11
Gas pipe (mm)
Φ9.52
Φ12.7
Φ15.9
Φ19.05
Φ22.2
13
Liquid pipe (mm)
Φ6.35
Φ6.35
Φ9.52
Φ9.52
Φ9.52