Hitachi RCI-1.0FSN3 Service Manual page 147

4 Electrical wiring
C A U T I O N
• Risk of fire: cables must never touch the refrigerant pipes, printed circuit boards (PCB), sharp edges or elec-
trical components inside the unit to avoid damaging them.
• Loose connection terminals may lead to cable and terminal overheating. The unit may operate incorrectly,
leading to a risk of fire. Check that the cables are firmly secured to the connection terminals.
Electrical connection
Check that the power supply for the RCD indoor unit is 220 - 240 V.
If not, replace connectors CN27 and CN28 on the TF transformers
in the electrical box.
Follow the steps below to connect the remote control cable or the
optional extension wire:
1 Pass the cable through the knockout hole in the cabinet.
2 Connect the cable to terminals A and B of the terminal strip
(TB2).
3 Tighten the screw on terminals A and B.
4 Check that the cables are correctly secured.
Follow the steps below to connect the power cables to the terminal strip (TB1):
1 Where necessary, loosen the screws on terminals L1 and N on the terminal strip (TB1)
2 Connect the power cables to terminals L1 and N.
3 Tighten the screws on terminals L1 and N.
4 Check that the cables are correctly secured.
Follow the steps below to connect the communication cables between the outdoor and indoor unit to the terminal strip
(TB2):
1 Where necessary, loosen the screws on terminals 1 and 2 on the terminal strip (TB2).
2 Connect the communication cables to terminals 1 and 2.
3 Tighten the screw on terminals 1 and 2.
4 Check that the cables are correctly secured.
Nº
1 Control Cable
2 Remote Control Cable
3 Power Source Cable
4 Earth Screw
135
SMGB0077 rev.0 - 01/2013
Part
2
1
4
4
1N 220-240V/50Hz
3