En-11
Fig. B
Joint pipe
(Locally
purchased)
Knockout hole
Joint pipe D
(Accessory or locally purchased) *1
Joint pipe B
(Accessory or locally purchased) *1
*1) Locally purchased and acces-
sory depend on the model, so for
details, refer "2.3. Accessories".
5. 4. Multiple connections
CAUTION
• When connecting multiple (maximum 3) units, be sure to install the unit with the
largest capacity nearest to the indoor unit.
For example) AOUA96TLBV (Outdoor Unit1) + AOUA96TLBV (Outdoor Unit2) +
AOUA72TLBV (Outdoor Unit3)
• When connecting multiple units, set the unit with the largest capacity as the master
unit, and the rest as the slave units.
(Refer to “7. FIELD SETTING”)
• When connecting multiple units, use the optional outdoor unit branch kit.
Outdoor unit
branch kit
(Optional)
Liquid pipe
(Locally purchased)
Discharge gas pipe
(Locally purchased)
Suction gas pipe
(Locally purchased)
Joint pipe
(Accessory)
To indoor unit
(To main pipe)
To outdoor unit
To outdoor unit
Outdoor Capacity
2 Units : Unit 1 ≥ Unit 2
3 Units : Unit 1 ≥ Unit 2 ≥ Unit 3
Outdoor unit 1
(Master unit)
Outdoor unit 2
(Slave unit 1)
Outdoor unit 3
(Slave unit 2)
To indoor unit
Branch kit restriction when install
Be sure following restriction.
1) Installation angle
Outdoor unit branch kit
A
C
B
A
B
C
C
Horizontal
To indoor unit
To outdoor unit
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.
2) Field pipe length
To indoor unit
(To main pipe)
To outdoor unit
To outdoor unit
To outdoor unit
2 ft (0.5 m) or more
2 ft (0.5 m) or more
To indoor unit (To main pipe)
To outdoor unit
To outdoor
unit
• Leave the distance 2 ft (0.5 m) or more for straight part to outdoor unit branch kit.
3) About the connecting curvature of fi eld pipe and branch kit:
The fi eld pipe should be connected to the branch kit so that the curved angle on each
side is 3 degree or less.
19-11/16 in (0.5 m)
*: Allowed value based on “A” (center of
fi eld pipe) at 19-11/16 in (0.5 m) from
“B” (junction of the branch kit).
* 0 to 1 in
(0 to 26 mm)
* 0 to 1 in
(0 to 26 mm)
4) For details, refer to the Installation manual of the outdoor unit branch kit.
Fig. Examples of multiple unit installation
Master
unit
Slave
unit1
Slave
unit2
(Example 3)
(Example 1)
(Example 2)
Master unit Slave unit1 Slave unit2
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.
(1) Examples of multiple unit installation are shown below.
a) Installable patterns
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 indoor unit
To indoor unit
To indoor unit
9378945159-04_IM.indb 119378945159-04_IM.indb 11 2015/12/1 10:50:552015/12/1 10:50:55
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