Omega OTEC ICHD009J0A-DMG026, Technical Manual

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requirements of the product (including reliable grounding, power leakage, and wire-diameter electrical load).
Do not install the product before the modification if the electrical installation requirements of the product are
not met.
◼
Air conditioners must use a dedicated power supply. The power voltage must conform to the rated voltage.
◼
The external power supply circuit of the air conditioner must include a grounding line, and the grounding line
of the power cable connecting to the indoor unit must be securely connected to the grounding line of the
external power supply.
◼
Electrical wiring work must be carried out by a professional technician, and must comply with the labels stated
in the circuit diagram.
◼
The fixed wiring connected must be equipped with an all-pole disconnection device with a minimum 3mm of
contact separation.
◼
Leakage protection devices must be configured according to national standards for electrical equipment.
◼
The power cord and signal cables must be neatly and properly arranged without interfering with one another
or contacting with any connecting pipes or valves.
◼
When multiple air conditioners are installed in a centralized manner, ensure load balance of the three-phase
power supply, and avoid installing multiple units at the same phase of the three-phase power supply.
◼
In general, two wires cannot be connected unless the joint is securely welded and wrapped with insulation
tape.

Power the system on only after all the completed wiring operations have been carefully
checked.
8.2 Power Supply Specifications
Four-way Cassette
:
IECS018(24,31,36,42,48)J3A-DWG053(71,90,105,120,140)
Model
Power supply
Switch capacity of the
main power supply(A)
power cable includes
grounded wire
(mm 2 )
Indoor/Outdoor
unit power
cable includes
grounded wire(mm
2
)
Voltage and
frequency
53 220V-240V~50Hz 20 2X2.5+1X2.5 4×2.5
71 220V-240V~50Hz 25 2X4.0+1X4.0 4×2.5
Model
Power supply Switch capacity of
the main power
supply(A)
power cable includes
grounded wire
(mm 2 )
Connective
wire(mm
2
)
Voltage and
frequency
90
IDU
220V-240V~50Hz
6 2X1.0+1X1.0
3X0.75
ODU 25 2X2.5+1X2.5
105
IDU
220V-240V~50Hz
6 2X1.0+1X1.0
3X0.75
ODU 32 2X4.0+1X4.0
120
IDU
220V-240V~50Hz
6 2X1.0+1X1.0
3X0.75
O DU 32 2X4.0+1X4.0
140
IDU
220V-240V~50Hz
6 2X1.0+1X1.0
3X0.75
O DU 40 2X6.0+1X6.0