Gree GMVVQ224WM/C-X Owner's Manual page 34

(4) When laying the pipes, be careful not to deform them. The radius of bending parts should be
more than 200mm. The pipes can't 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.
(5) Please use a torque wrench to connect union nut on the indoor unit. See the Fig. 3.4.1 as
below.
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.
3.4.2 Installation of the manifold
The main function of manifold is used to shunt the refrigerant. Pay attention to the following points
when installing it:
(1) When installing the manifold, it should be as close as possible to the indoor unit to reduce
the influence of the indoor unit manifold on the refrigerant distribution.
(2) The manifold must be matched with the equipment. The other products which are not
specified by the manufacturer shall not be used.
(3) Check the model before installing the manifold. Do not use it incorrectly.
1） Y-type manifold is as follows. Y-type manifold can be installed vertically or horizontally.
GMV Heat Recovery DC Inverter VRF
Fig.3.4.1
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