Hitachi RPC-1.5FSN3 - Position of Electrical Wiring Connection

P5416543
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7.3 Position of Electrical Wiring Connection
l
Tightly secure wirings to the terminal
block according to the specied torque. If
tightening the terminals is not completed,
heat generation, an electric shock or a re
will occur at the terminal connection.
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Make sure that the wires are securely xed
in order not to apply an external force to the
terminal connection of the wirings. If xing is
not completed, heat generation or a re will
occur.
• The electrical wiring connection for the indoor
unit is shown in the item 7.2.2.
• The connection at the terminal block for the
indoor unit is shown in the gure below. Check
the outdoor unit for the combination before the
wiring work. The screws at the terminal block
should be performed according to the tightening
torque as shown in the table below.
(1) Connect the cable for the optional remote
control switch or the optional extension cable
to the terminals inside the electrical box
through the connecting hole in the cabinet.
(2) Connect the power supply and the earth
wires to the terminals in the electrical box.
(3) Connect the wires between the indoor unit
and the outdoor unit to the terminals in the
electrical box.
(4) Connect cables correctly to match the
terminal No. and the mark band.
(5) Connect the transition wires between indoor
units connected to the same outdoor unit.
(6) Do not connect the main power source
cables to the control line (Terminals A, B,
1 and 2 of TB2). If connected, the printed
circuit board (PCB) will be broken.
(7) Tightly clamp the wires using the cord clamp
inside the electrical box.
Tightening Torque for Terminals
Tightening Torque
M4 1.0 - 1.3 (N-m)
Terminal Block for
Power Source Cable
TB1 (black)
Terminal Block for
Control Cable
TB2 (white)
(8) When installing the unit in Australia, connect
the both ends of shielded twist pair cable
(remote control switch cable and control
cable) to the earth as shown bellow.
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Do not connect the main power source cables to
the control line (Terminals A, B, 1 and 2 of TB2).
If connected, the printed circuit board (PCB) will
be broken.
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Pay attention to followings when wires are
connected to terminal block.
(A) Attach an insulation tape or a sleeve to each
terminal.
(B) Maintain the distance between the electrical
box and the terminals to prevent a short
circuit.
(C) Maintain the distance between the terminals.
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S/NR/L1
AB
12
Shielded Twist Pair Cable
Shield
EarthEarth
Wires
(A)
(B)
(C)
Screw