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5.1.4 Horizontal Alignment
After the indoor unit is installed, remember to check the horizontal status of the whole unit. It
should be horizontal from front to back and slant 1% from left to right, following the drainage direction,
as shown in Fig.5.1.5.
5.2 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.5.2.1.
(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.
5.3 Installation and Test of Drain Pipe
5.3.1 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
Fig.5.2.1
Multi Variable Air Conditioners Duct Type Indoor Unit
Fig 5.1.5
Pipe diameter (mm)
Φ6.35
Φ9.52
Φ12.7
Φ15.9
12
Torque for tightening nut
Torque (N·m)
15~30
35~40
45~50
60~65
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