Installation Of Connection Pipe - Gree GMV-80WL A-T Manuel De L'utilisateur

DC Inverter Multi VRF System User Manual

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
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) Use pipe cutter to cut the connection pipe in case it is unshaped.
(2) Keep the pipe downward in case cutting scraps get into the pipe. Clear away the burrs
after cutting.
(3) Remove the flared nut connecting indoor connection pipe and outdoor unit. Then use
flaring tool to fix the flared nut into the pipe (as shown in Fig.12).
(4) Check if the flared part is flaring evenly and if there is any crack.
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Fig. 12
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