DC INVERTER U-MATCH AIR CONDITIONERS INSTALLATION
Connect the power cable to the terminal and earthing screws marked “L1, L2, L3 & N”.
Use cable fastener to bundle and fix the cable.
Caution:
For air-conditioner with auxiliary heater, it is required to connect the power cable to the “L1, L2
L3”terminals and the grounding screw.
4.1.4 Connection of Signal Line of Wire Controller
Caution:
Take great care when carrying out the following connections, so as to avoid malfunction of the
air-conditioning unit because of electromagnetic interference.
The signal line of the wire controller must be separated from the power line and the connecting line
between the indoor unit and the outdoor unit.
In case the unit is installed in a place vulnerable by electromagnetic interference, it is better to ◆
use shielded cable or double-twisted cable as the signal line of the wire controller.
Open the cover of the electric box of the indoor unit.
Pull the signal cable of the wire controller through the rubber ring.
Plug the signal line of the wire controller onto the 4-bit pin socket at the circuit board of the indoor
unit.
Use cable fastener to bundle and fix the signal cable of the wire controller.
4.1.5 Cable Connection
Remove the right side plate of the indoor unit and punch through the cable-cross hole. Mount the
cable-cross loop.
Remove the cable clamp. Connect the power cable to the terminal and fix it.
Fix the power cable and signal control wire with cable clamp. Then, connect to corresponding
connector properly.
Confirm if the cables are securely fixed.
Mount the front side plate.
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