6 Electrical Wiring
!
WARNING
•
Turn OFF the main power switch to the indoor unit and the outdoor unit before electrical wiring work or a periodical check is
performed.
• Check to ensure that the indoor fan and the outdoor fan have stopped before electrical wiring work or a periodical check is
performed.
•
Protect the wires, drain pipe, electrical parts, etc. from rats or other small animals. If not protected, rats may gnaw at unprotected
parts and at the worst, a fire will occur.
• Check the item below before turning ON the main switch.
•
Tighten screws according to the following torque.
M3.5: 1.2Nm
M5: 2.0~2.4Nm
!
CAUTION
•
Wrap the accessory packing around the wires, and plug the wiring connection hole with the seal material to protect the product
from any condensate water or insects.
•
Tightly secure the wires with the cord clamp inside the indoor unit.
•
Secure the cable of the remote control switch using the cord clamp inside the electrical box.
6.1 General Check
1
Make sure that the field-selected electrical components (main power switches, circuit breakers, wires, conduit connectors and
wire terminals) have been properly selected according to the electrical data given in “7. Electrical Installation”. Make sure that the
components comply with National Electrical Code (NEC).
2
Check to ensure that the power supply voltage is within ±10% of the rated voltage.
3
Check the capacity of the electrical wires. If the power source capacity is too low, the system cannot be started due to the
voltage drop.
4
Check to ensure that the ground wire is connected.
5
Power source main switch: install a multi-pole main switch with a space of 3.5mm or more between each phase.
6.2 Electrical Wiring Connection
The intermediate connection between the indoor unit and the air panel should be conducted by referring to Installation Manual
for Air Panel.
1
Connect the power supply and earth wires to the terminals in the electrical box.
2
Connect the wires between the indoor unit and the outdoor unit to the terminals in the electrical box.
4(SI)
4( )
SI
1(L)
1(L)
2(N)
2(N)
Electrical Wiring Diagram
Outdoor unit
Indoor unit
Transmission cable
Terminals
Terminals
INSTALLATION AND MAINTENANCE
HO2019289HA
21
EN
