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ENGLISH
Pipe Connection Method/Precautions for
Series connections between Outdoor units
- Separate Y branch joints are needed for series connections between
outdoor units.
- Please refer to the below connection examples to install pipe
connections between outdoor units.
Pipe connection between outdoor
units (General Case)
The maximum pipe
length after the first
branching between the
outdoor units is 10 m
[32.8 ft] or less
Pipes between outdoor units
are 2 m [6.6 ft] or less
- If the distance between the outdoor units becomes more than 2 m
[6.6 ft], apply Oil Traps between the gas pipes.
- If the outdoor unit is located lower than the main pipe, apply Oil Trap.
Pipes between outdoor units
are 2 m [6.6 ft] or longer
Oil Trap
Oil Trap Oil Trap
2 m [6.6 ft] or less
2 m [6.6 ft] or less 2 m [6.6 ft] or less
0.2 m [0.66 ft]
2 m [6.6 ft] or longer
2 m [6.6 ft] or longer
2 m [6.6 ft] or longer
CAUTION
• Bending radius should be
at least twice the diameter
of the pipe.
• Bend pipe after 500 mm
[19.7 inch] or more from
branch(or header).
Do not bend U type.
It may affect performance
or result in noise. If U type
bending is required the R
should be more than 200
mm [7.9 inch]
!
500mm [19.7 inch]
or more
500mm [19.7 inch]
or more
R
Toward indoor unit
Toward indoor unit
Pipe inclination (2° or more)
Toward indoor unit
Toward indoor unit
Toward indoor unit
Toward indoor unit
(Example 1)
(Example 2)
(Example 3)
- Apply Oil Trap as shown below when the length of the pipe between
the outdoor units is more than 2 m [6.6 ft]. Otherwise, the unit may
not operate properly.
(Example 1)
Toward indoor unit
2 m [6.6 ft]
2 m [6.6 ft]
0.2 m [0.66 ft]
Oil Trap
(Example 2)
Examples of Wrong Pipe Connections
If the main pipe is
higher than the
outdoor units, oil is
accumulated in the
outdoor unit.
If there are differences in the height
between the outdoor units, oil is
accumulated in the lower outdoor unit.
Oil Trap
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