Electrical Connection Of Indoor Unit - Hitachi RAS-H(V)RNME-AF Service Manual

4 Electrical wiring

4.1.3 Electrical connection of indoor unit

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Wiring connection
The correct electrical wiring connection for the outdoor unit is shown below:
1 Using the appropriate cable, connect the power circuit to the appropiatre terminals as shown on the wiring label and
the illustration bellow.
Earth Terminal
Power wires
C A U T I O N
Be sure to use a dedicated power circuit for the indoor unit. Never use a power circuit shared by another
appliance (Outdoor unit).
2 Using the appropiate cables, connect the power source cables L1 and N (for 230V 50Hz) or L1, L2, L3 and N (for
400V 50Hz) and the ground cable to the earthing screw in the electrical box base plate.
3 Connect the transmission wires between the outdoor unit and the indoor unit to the terminals 1 and 2 on the terminal
board 2 (TB2).
4 Fix the cable with the clamp supplied in the Electrical Box to ensure strain relief.
5 When routing out cable, make sure that it does not obstruct mounting of the outdoor service cover.
79
SMGB0070 rev.1 - 08/2011
Transmission wires
Rear cover
Keep a distance between each
wiring terminal and attach insulation
tape or sleeve as shown in the
figure.
Earth screw
Wiring method with clamp
1. Insert the wires into the cord
clamp and clamp them as shown in
the figure.
2. Perform wiring so that wires do not
touch the refrigerant pipes or edge of
the covers.
Control cable
Earth wire
Power supply cable
Power terminals
Power supply: 1~ 230V 50Hz
Power supply: 3N~ 400V 50Hz
Wiring method
Tape or sleeve
C A U T I O N
Do not use a solderless terminal when
a single wire is used. If used, it causes
abnormal heating at the caulking
portion of the terminal. If a single wire
is used, connect the wire directly as
shown in the figure.
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