Multiple Connections - Fujitsu AIRSTAGE K00250LW Addendum

Fig. B
Joint pipe
(Locally
purchased)
5. 4.

Multiple connections

• 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 1
(Master unit)
To indoor unit
Outdoor unit
branch kit
(Optional)
To indoor unit
(To main pipe)
To outdoor unit
To outdoor unit
Branch kit restriction when install
Be sure following restriction.
1) Installation angle
Outdoor unit branch kit
Horizontal
A
To indoor unit
PROHIBITED
A
GOOD:
0° to -10°
PROHIBITED
Vertical
PROHIBITED
• 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.
En-11
Joint pipe D
(Accessory or locally purchased) *1
Joint pipe B
(Accessory or locally purchased) *1
Knockout hole
*1) Locally purchased and acces-
sory depend on the model, so for
details, refer "2.3. Accessories".
CAUTION
Outdoor Capacity
2 Units : Unit 1 ≥ Unit 2
3 Units : Unit 1 ≥ Unit 2 ≥ Unit 3
Outdoor unit 2
(Slave unit 1)
Outdoor unit 3
(Slave unit 2)
Joint pipe
(Accessory)
Liquid pipe
(Locally purchased)
Discharge gas pipe
(Locally purchased)
Suction gas pipe
(Locally purchased)
To outdoor unit
B
To outdoor unit or
C
next branch kit
PROHIBITED
C B GOOD:
C
0° to -10°
PROHIBITED
PROHIBITED PROHIBITED
2) Field pipe length
To indoor unit
To outdoor unit
(To main pipe)
2 ft (0.5 m) or more
To indoor unit (To main pipe)
2 ft (0.5 m) or more
• 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.
*: Allowed value based on "A" (center of
19-11/16 in (0.5 m)
4) For details, refer to the Installation manual of the outdoor unit branch kit.
Fig. Examples of multiple unit installation
(Example 1)
Master unit Slave unit1 Slave unit2
(Example 2)
Master unit Slave unit1 Slave unit2
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
Master Slave
GOOD
unit unit 1
To indoor unit
Master Slave
GOOD
unit unit 1
To indoor unit
Slave
GOOD
Master
unit 1
unit
To indoor unit
To outdoor unit
To outdoor unit
To outdoor unit
To outdoor
unit
fi eld pipe) at 19-11/16 in (0.5 m) from
"B" (junction of the branch kit).
(Example 3)
Master
unit
Slave
unit1
Slave
unit2
CAUTION
Slave
unit 2
Slave
unit 2
Slave
unit 2