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Installation of Outside Unit
6. Field Wiring
6.2 Schematic Diagram of Individual wiring
!! This System is representative Example.
!! * : Actual combination of outdoor unit may be different
Outdoor
Power Supply
(Main Switch)
**
Indoor
Power supply
Power Line
**
Power Line
Pull Box
(Installer option)
Power Line
HR unit
or Indoor Unit
(for Indoor Unit)
■ Connecting Power and Communication Cable
• 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.
• If individual power supply is necessary for each indoor unit, MPM (Multi-tenant Power Module) should be applied at each
indoor unit. (Optional Accessory)
• 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.
by Product line-up of region or Product Type.
Pull Box
Pull Box
(Installer option)
(Installer option)
Power Line
Indoor Unit
**
R S T N
Switch
Fuse
3 Phase
4 Wires
*
[Master]
[Slave1]
Power Supply
Communication T/B
Power Supply
Communication T/B
T/B
T/B
Outdoor Indoor
Outdoor Indoor
Power Line
Power Line
Indoor Unit
Communication Line
20
Installation
R S T
L
N
Switch
Switch
Fuse
Fuse
3 Phase
1 Phase
3 Wires
2 Wires
[Slave2]
[Slave ...]
Power Supply
Communication T/B
T/B
Outdoor Indoor
...
Communication Line
(2 core shield cable)
Indoor Unit
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