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23
ENGLISH
Pipe Connection Method/Precautions for
Series connections between Outdoor units
- Separate Y branch joints are needed for series connections between
outdoor units.
- Y-branches between the outside units must be installed horizontally.
- 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
Oil Trap
Pipes between outdoor units
are 2 m [6.6 ft] or less
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.
Examples of Wrong Pipe Connections
- If outside units are located at different level, oil trap must be installed
after each Y branch.
- Oil trap should be located at same level of Y branch. (Heat Pump :
High Pressure Vapor / Heat Recovery : High Pressure Vapor & Low
Pressure Vapor)
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
Level
Level
Oil Trap
Level Level
Oil Trap
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]
Toward indoor unit
≤ 2 m [6.6 ft]
≥ 2 m [6.6 ft]
≥ 0.2 m [0.66 ft]
Oil Trap
(Example 2)
- If pipe is higher than outside unit, oil trap must be installed after each
Y branch.
- Oil trap should be located at same level of Y branch. (Heat Pump :
High Pressure Vapor / Heat Recovery : High Pressure Vapor & Low
Pressure Vapor)
- The pipes between the outdoor units must maintain horizontal
levelness or give an inclination to prevent a back flow toward the
slave outdoor unit. Otherwise, the unit may not operate properly.
1,MFL68980308,영영 2018. 11. 13. 영영 3:23 Page 23
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