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IS
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Installation Manual
65
2. 60Hz
u
Example Connection of Communication Cable
n
1 Outdoor Unit - 3Ø, 380V
R S T N
Switch
Fuse
L
N
Communication Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Outdoor Unit]
[Indoor Units]
3 Phase 4 Wires
Power supply
60Hz 380V
Power supply
1 Phase 60Hz
220V
(Main Switch)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
The GND terminal at the main PCB is a ‘-’ terminal for day contact, it is not the point to make
ground connection.
Between Indoor and Master Outdoor unit
B
SODU
IDU
INTERNET DRY1 DRY2 GND 12V
A
B
A
B
A
Master
Outdoor Unit
3
4
3
4
3
4
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.
Electrical Wiring
Summary of Contents for multi V JRUN Series
Page 120: ......
