Hitachi RCI Service Manual page 131

4 Electrical wiring
Electrical connection
Check that the power supply for the RCD indoor unit is 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 Connector for the swing louver motor
2 Fan motor connector
3 Terminal strip (TB2)
4 Terminal strip (TB1)
5 Wiring
6 Power wiring
Follow the steps below to connect the earth wire to the earth
connection in the electrical box:
1 Where necessary, loosen the screw on the earthing connection
in the electrical box.
2 Connect the shielded part of the power supply earth wire and
the signal wiring earth wire to the earth connection.
3 Tighten the screw on the earthing connection in the electrical box.
4 Check that the shielded part of the earthing cables are correctly secured.
Nº
1 Tie
Communication wiring between the indoor and
2
outdoor units and between indoor units
Operating control wiring. In the case of group
3
operations using a remote control
4 Remote control wiring
119
SMGB0063 rev. 1 - 10/2010
Part
Part
4