4.9 Oil Trap Application
10 m (33 ft) or less
2 m(6.6 ft) or less 2 m(6.6 ft) or less
10 m (33 ft) or less
Oil Trap
2 m(6.6 ft) or less
2 m(6.6 ft) or less
0.2 m(0.66 ft) or more
Oil Trap
0.2 m(0.66 ft) or more
when 2 m(6.6 ft) or longer
* 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.
* 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)
Level
Level
Oil Trap
Level
Oil Trap
Oil trap application
Example of series connection
Toward indoor unit
Pipe inclination (2″ or more)
Toward indoor unit
Toward indoor unit
Toward indoor unit
Toward indoor unit
Horizontal level
Main pipe above units without Oil Trap
Main pipe above units without Oil Trap Piping upward to Unit
Installation with Oil Trap
Upward to Slave unit Downward to Slave unit
h
Toward indoor unit
h
Toward indoor unit
h
0.2m
Toward indoor unit
Oil Trap
Installation of Outdoor Unit
4. Refrigerant Piping System
Installation
18
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