Multi Variable Air Conditioners Fresh Air Series Indoor Unit
11
4.1.4 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 4.1.7.
Fig 4.1.7
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.
Torque for tightening nut
Pipe diameter
(mm)
Torque (N·m)
Ф6.35
15~30
Ф9.52
35~40
Ф12.7
45~50
Ф15.9
60~65
Fig 4.2
（
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
）
It is not allowed to connect the condensate drain pipe into waste pipe or other
pipelines which are likely to produce corrosive or peculiar smell to prevent the smell
from entering indoors or corrupt the unit.
（
2
）
It is not allowed to connect the condensate drain pipe into rain pipe to prevent rain
water from pouring in and cause property loss or personal injury.
（
3
）
Condensate drain pipe should be connected into special drain system for air
conditioner.
Summary of Contents for VEOA042N432U
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