Hitachi RCI Service Manual page 129

Indoor units system free series & complementary systems
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4 Electrical wiring
Follow the steps below to connect the power cables to the terminal strip (TB1):
C A U T I O N
To connect a power supply with neutral, connect the cables to terminals L1 and N on the terminal strip (TB1).
To connect a power supply without neutral: make the connection to terminals L1 and L2 on the terminal strip
(TB1).
1
Where necessary, loosen the screws on terminals L1 and N or L1 and L2, as applicable, on the terminal strip (TB1).
2
Connect the power cables to terminals L1 and N or L1 and L2, as applicable.
3
Tighten the screws on terminals L1 and N or L1 and L2, as applicable.
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
(TB1):
1
Where necessary, loosen the screws on terminals 1 and 2 on the terminal strip (TB1).
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.
Cover the cables and the hole using a sealant to protect them from
condensation and insects.
1
Terminal box (TB1)
2
Terminal box (TB2)
3
Outlet air thermistor
4
Connector for the swing louver motor
5
Printed circuit board (PCB)
6
Earthing screw
7
Remote control wiring
8
Communication wiring
9
Power wiring
10
Tie
117
SMGB0063 rev. 1 - 10/2010
Part
4

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