GMV5 Compact Series VRF Outdoor Unit
14
200mm. the pipes cannot be repeatedly bent or stretched; otherwise the material will get harden. Do not bend
or stretch the pipe over three times at the same position.
(4) Please use a torque wrench to connect union nut on the indoor unit. See Fig.9.
Fig.9 Installation of fitting pipe
1) Align the expansion end of copper pipe with the center of threaded joint. Tighten the flare nuts with your
hands;
2) Tighten the flare nuts with torque wrench until you hear “click” sound;
3) Use sponge to wrap the connecting pipe and joints without thermal insulation and tie it up with plastic
tape;
4) A mounting support for the connection pipe is required;
5) The curvature degree of connection pipe should not be small, otherwise the pipe might crack. Installation
personnel should use tube bender when bending the pipe;
6) Don’t forcibly stretch the pipe joint, otherwise indoor capillary or other pipes might be damaged and lead
to refrigerant leakage.
4.4.2 Y-type Manifold
（1） Y-type manifold
到其它分支管
或到室内机
现场用管
室外
现场用管
口2
进口
出口1
Y型分歧管
Fig.10 Y-type manifold
(2) Y-type manifold has several pipe sections with different pipe size, which facilitates to match with various
copper pipes. Use pipe cutter to cut in the middle of the pipe section with different pipe size and deburr as well.
See Fig.11.
Outdoor unit
Inlet
Field supplied pipe
Outlet 1
Outlet 2
Y-type manifold
Field supplied pipe
To the connection
pipe or indoor unit
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