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26
NOTE
!
- Field wiring diagram is to be used as a guidelineonly. Wiring
should comply with applicable local and national codes
- ELCB must have function to prevent electrical short and over
current at the same time .
- Use copper wires only.
- Unit must be grounded in compliance with the applicable local
and national codes.
- ELCB and fuse/breaker must install to the power line
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally.
Running the product in reversed phase may break the compressor
and other parts.
Between Indoor and Master Outdoor unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
A
B
3(A) 4(B)
3(A) 4(B)
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
• It is not the point to make ground connection.
- Make sure that terminal number of master and slave outdoor units
are matched.(A-A,B-B)
Master
GND
12V
Outdoor Unit
3(A) 4(B)
3(A) 4(B)
Master
DRY2
GND
12V
Outdoor Unit
Slave1
DRY2
GND
12V
Outdoor Unit
Slave2
DRY2
GND
12V
Outdoor Unit
460V
Example Connection of Communication Cable
1 Outdoor Unit-3 Ø, 460 V
Power supply
3 Phase 3 Wires
60 Hz 460 V
[Outdoor Unit]
(Main Switch)
R(L1) S(L2) T(L3)
Switch
Power supply
ELCB
1 Phase
50 Hz 220-240 V
60 Hz 220 V
L(L1) N(L2)
Power Line
(3 Wires Cable)
ELCB
Power Line
(2 Wires Cable)
Pull box
Pull box
(Installer option)
(Installer option)
Power Line
Power Line
(2 Wires Cable)
(2 Wires Cable)
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally.
Running the product in reversed phase may break the compressor
and other parts.
Between Indoor and Master Outdoor unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
A
B
3(A) 4(B)
3(A) 4(B)
2 Outdoor Units-3 Ø, 460 V
When the power source is connected In series between the units.
Power supply
3 Phase 3 Wires
60Hz 460V
[Master]
(Main Switch)
R(L1) S(L2) T(L3)
Switch
Power supply
ELCB
1 Phase
50Hz 220-240V
60Hz 220V
L(L1) N(L2)
Power Line
(3 Wires Cable)
ELCB
Power Line
(2 Wires Cable)
Pull Box
Pull Box
Pull Box
(Installer option)
(Installer option)
(Installer option)
Power Line
Power Line
(2 Wires Cable)
(2 Wires Cable)
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull box
(Installer option)
Power Line
Power Line
(2 Wires Cable)
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
Master
GND
12V
Outdoor Unit
3(A) 4(B)
3(A) 4(B)
[Slave]
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
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