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(4) As for the unused branches, do not cut the pipes with a pipe cutter to avoid refrigerant
leakage.
4.2.3 Precautions for the Installation of Connection Pipe
(1) Please comply with the following rules during pipe connection: Connection pipe should be as
short as possible, so is the height difference between indoor and outdoor units. Keep the pipe
bends as less as possible and the bend radius as large as possible.
(2) Install the connection pipes by welding. Please strictly follow the requirements for welding
process. Rosin joints, weak joints or pin holes are not allowed.
(3) When laying the pipe, be careful not to distort it. Radius of bending parts must be over
200mm. Please do not bend or stretch the pipes frequently, otherwise the pipes will become
hard. A pipe shall not be bent or stretched for more than 3 times at the same position.
(4) Please use moment wrench to connection the union nut of Mode Exchange Box. See below
figure.
Fig.4.2.6
Fig 4.2.7
18
GMV6 HR Mode Exchange Box
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