Pipe Connection; Installation And Test Of Drain Pipe - Gree GMV-ND22PL/B-T Owner's Manual

4.2 Pipe Connection

（1） Direct the flaring of copper pipe to the center of screwed connection and then screw the flaring nut
tight as shown in Fig.4.2.
（2） Use a torque wrench to tighten up the flaring nut until the wrench gives out a click sound.
（3） The pipe should not be bent too much or it may crack. Use a pipe bender when bending the pipe.
（4） Use a sponge to wrap the uninsulated connection pipe and the joint. Then tie it tight with a plastic
tape.

4.3 Installation and Test of Drain Pipe

4.3.1 Notice for Installation of Drain Pipe
（1） The drain pipe should be as short as possible and slope downward for at least 1%~2% so that
condensate can drain out easily.
（2） Size of the drainage hose must not be smaller than that of the drain pipe.
（3） Install the drain pipe according to the following diagram and make it insulated. Improper installation
will lead to water leakage and furniture and other objects may get wet.
（4） You can buy local hard PVC pipe as drain pipe. When connecting the pipe, insert the end of PVC
pipe into the drain hole and then tighten it up with a drain hose and cable tie. Do not use adhesives
to connect drain hole and drain hose.
（5） When the drain pipe is used for several equipment, the shared pipe should be about 100mm lower
than the drain hole of each equipment. In this case, use thicker pipe.
4.3.2 Installation of Drain Pipe
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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
Fig 4.1.5
Fig.4.2
Fig 4.3.1
9
Torque for tightening nut
Pipe diameter (mm) Torque (N·m)
φ6.35
φ9.52
Φ12.7
φ15.9
15~30
35~40
45~50
60~65