En-10
Outdoor unit 1
(Master unit)
To indo o r u n it
Outdoor unit 2
(Slave unit 1)
Outdoor unit 3
(Slave unit 2)
Outdoor unit branch kit
(Optional)
Liquid pipe
(Field supply)
Gas pipe
(Field supply)
Joint pipe
(Accessory)
To indo o r u n it
(To main pipe)
To outdoo r u n i t
To outdoo r u n i t
Outdoor Capacity
2 Units : Unit 1 ≥ Unit 2
3 Units : Unit 1 ≥ Unit 2 ≥ Unit 3
Branch kit restriction when install
Be sure following restriction.
Installation angle 1)
Outdoor unit branch kit
A
C
B
A
B
C
C
Horizontal
To indo o r u n it
To outdoo r u n i t
To outdoor unit or
next branch kit
PROHIBITED
PROHIBITED
PROHIBITED
PROHIBITED
GOOD:
0° to -10°
GOOD:
0° to -10°
PROHIBITED PROHIBITED PROHIBITED
Vertical
Install the outdoor unit branch kit horizontally level, within 0° to -10°, so that the •
refrigerant separates evenly.
Do not install the outdoor unit branch kit vertically.•
Straight pipe length 2)
To indo o r u n it
(To main pipe)
To outdoo r u n i t
To outdoo r u n i t
To outdoo r u n i t
0.5 m or more
0.5 m or more
To indoor unit (To main pipe)
To outdoo r u n i t
To outdoo r
unit
Leave the distance 0.5 m or more for straight part to outdoor unit branch kit.•
For details, refer to the Installation Instruction Sheet of the outdoor unit branch kit. 3)
Examples of multiple unit installationFig.
(Example 1)
Master unit Slave unit1 Slave unit2
(Example 3)
Master
unit
Slave
unit1
Slave
unit2
(Example 2)
Master unit Slave unit1 Slave unit2
CAUTION
To prevent the oil from settling in the stopped unit, install the pipes between the
outdoor units so that they are level or are tilted upward to the outdoor units.
Examples of multiple unit installation are shown below.(1)
Installable patterns a)
GOOD
GOOD
GOOD
Master
unit
Slave
unit 1
Slave
unit 2
Master
unit
Slave
unit 1
Slave
unit 2
Master
unit
Slave
unit 1
Slave
unit 2
To indo o r u n it
To indo o r u n it
To indo o r u n it
Non-installable patterns b)
PROHIBITED
Master
unit
Slave
unit 1
Slave
unit 2
To indo o r u n it
PROHIBITED
Master
unit
Slave
unit 1
Slave
unit 2
To indo o r u n it
PROHIBITED
Master
unit
Slave
unit 1
Slave
unit 2
To indo o r u n it
If the pipe length between outdoor unit branch kit and outdoor unit branch kit (2)
(or slave unit) is longer than 2 m, or a lower pipe line exists between outdoor
units, rise for gas pipe should be arranged to eliminate oil from entering into and
remaining at pipes and the stopped outdoor unit. However, there is no need to
provide a rise on the pipe connecting between the master unit and the indoor unit
even if the length exceeds 2m.
Master
unit
Slave
unit 1
Slave
unit 2
To indo o r u n it
2 m or less2 m or less
Gas pipe
Master
unit
Slave
unit1
Slave
unit2
To indo o r u n it
Rise
(200 mm or more)
2 m or more 2 m or more
2 m or less 2 m or less
Gas pipe
Master
unit
Slave
unit1
Slave
unit2
Rise
lower pipe
To indo o r u n it
500 mm or less
Gas pipe
9378945104-01_IM.indb Sec1:109378945104-01_IM.indb Sec1:10 2013-3-12 14:08:222013-3-12 14:08:22
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