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40 Outdoor Unit
• 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.
• Apply Oil Trap only to gas pipe as shown below when the length of the pipe between the outdoor units is over 2m(6.6ft).
Otherwise, the unit may not operate properly.
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)
(Example 1)
(Example 2)
Toward indoor unit
Toward indoor unit
2m(6.6ft)
2m(6.6ft)
> 2m(6.6ft)
0.2m(0.66ft)
Oil Trap
* Install Oil trap if the ODU is at lower level than main piping.
Refrigerant piping system
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