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Installation of Outside Unit
4. Refrigerant Piping System
Oil trap application
2 m(6.6 ft) or less
2 m(6.6 ft) or less
10 m (33 ft) or less
* If the distance between the outside units becomes more than 2 m (6.6 ft), apply Oil Traps between the gas pipes.
* If the outside unit is located lower than the main pipe, apply Oil Trap.
Level
* If the Outdoor / Outside units are located at different level or pipe is higher than Outdoor / Outside units,
OIL TRAP must be installed after each Y branch at same level of Y branch.
(Pipe line : Gas pipe for Heat Pump / High Pressure & Low Pressure Gas pipe for Heat Recovery)
Example of series connection
Toward indoor unit
Horizontal level
Toward indoor unit
Main pipe above units without Oil Trap
Toward indoor unit
Main pipe above units without Oil Trap
2 m(6.6 ft) or less
Oil Trap
Level
Toward indoor unit
Pipe inclination (2" or more)
Upward to Slave unit
Toward indoor unit
h
Toward indoor unit
Piping upward to Unit
14
Oil Trap
0.2 m(0.66 ft) or more
2 m(6.6 ft) or less
Toward indoor unit
h
Toward indoor unit
Installation
Oil Trap
0.2 m(0.66 ft) or more
when 2 m(6.6 ft) or longer
10 m (33 ft) or less
Oil Trap
Level
Level
Downward to Slave unit
Oil Trap
Installation with Oil Trap
h
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