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Installation Manual 49
ENGLISH
Electrical Wiring
Master Slave1 Slave2
Master Slave1 Slave2
Master Slave1 Slave2
Master Slave1 Slave2
Remote
controller
Remote
controller
Indoor
Unit
Indoor
Unit
Remote
controller
Outside Unit
Outside Unit
Outside Unit
Outside Unit
Remote
controller
Indoor
Unit
Indoor
Unit
Remote
controller
Remote
controller
Indoor
Unit
Indoor
Unit
Remote
controller
Remote
controller
Indoor
Unit
Indoor
Unit
2-Core Shield Cable Multi-Core Cable
When none are available, follow the instructions below.
• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring
may cause abnormal heat.)
• When connecting wiring which is the same thickness, do as shown in the figure below.
• For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure
being exerted on the terminal block.
• Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will
strip the head and make proper tightening impossible.
• Over-tightening the terminal screws may break them.
◆ Precautions when laying power wiring
Round pressure terminal
Power wire
Use round pressure terminals for connections to the power terminal block.
• Use the 2-core shield cables for transmission lines. Never use them together with power cables.
• The conductive shielding layer of cable should be grounded to the metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading capacitor not only will deteriorate
power factor improvement effect, but also may cause capacitor abnormal heating. Therefore, never
install a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than 2%. If it is greater the units lifespan will
be reduced.
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