Hitachi RCI-1.0FSN4 Service Manual page 156

4 Electrical and control settings
Unit electrical wiring and connection
Electrical connection
Check that the power supply for the RPI indoor unit is 230 V. If not, replace connectors CN on the TF transformers in the
electrical box.
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N O T E
The service panel for the indoor unit fan motor is at the bottom of the unit and the electrical box service panel is on the right-hand side.
Open the service panel.
Cut the centre of the rubber bushing in the wiring connection hole.
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N O T E
• To prevent the screws from falling from the terminal box, do not remove them completely, hold onto the terminal and check that the
screw is secure through the hole in the terminal.
• Use the following screws for the terminal box:
- M4 screw for the power supply.
- M3.5 screw for the operating line.
Follow the steps below to connect the remote control cable or the optional extension wire:
1 Pass the cable through the knock-out hole in the cabinet.
2 Connect the cable to terminals A and B of the terminal strip (TB).
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 (TB):
1 Where necessary, loosen the screws on terminals L1 and N on
the terminal strip (TB).
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 (TB):
1 Where necessary, loosen the screws on terminals 1 and 2 on the
terminal strip (TB).
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.
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.
Firmly secure the cables using a tie inside the electrical box.
142 SMGB0099 rev.0 - 12/2016
Rubber bushing
Cut inside
From 0.6 to 6.0 hp
Remote control
Power supply wires
(PC-ARFPE)
(single phase)
Transmission
wires
From 8.0 to 20.0 hp
Earth wiring
Earth screw
Remote control
(PC-ARFPE)
Transmission wires
Power supply wires
(single phase)