Hitachi RCIM-0.4FSRE Installations- Und Betriebshandbuch Seite 55

ELECTRICAL WIRING
12.3 POSITION OF ELECTRICAL WIRING CONNECTION
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C A U T I O N
• Ensure that the wiring terminals are tightened securely with the
specified torques. Loose terminals may cause heat generation at the
terminal connection part, a fire or an electric shock.
• Fix the cables securely. External forces from the cables applied on
the terminals could lead to heat generation and a fire.
• Make sure that the wires are securely fixed in order not to apply an
external force to the terminal connections of the wirings. If fixing is not
completed, heat generation or a fire will occur.
Refer to
"13.5 Electrical Wiring"
intermediate connection between the indoor unit and the air
panel.
The connections at the terminal board for the indoor unit
are shown in the figure below. Check the outdoor unit to be
combined before wiring work. The tightening torque for terminals
is shown in the table below.
Tightening Torque for terminals:
Screw Size
TB1 M4
TB2 M3.5
Terminal board for power source
cable TB1 (black)
-
R/L1 S/N
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N O T E
When using the stranded wire for field-wiring connection, M4 crimping
terminal is required. When using the single wire, make it into the shape
shown in the figure below before connecting it in order to tighten the
washer uniformly.
Connect it with
Connect it with crimping
Crimping Terminal.
terminal
Stranded wire
Stranded Wire
19 PMML0550 rev.0 - 12/2020
chapter for details of the
Tightening Torque
1.0 - 1.3 (N-m)
1.2 (N-m)
Terminal board for control cable
TB2 (white)
A B 1 2
Connect it Direct
Connect it direct as As Shown Below.
shown below
Single wire
Single Wire
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.
Connect the power supply and the earth wires to the terminals
in the electrical box.
Connect the wires between the indoor unit and the outdoor unit
to the terminals in the electrical box.
Tie the wires together with the cord clamp inside the electrical
box.
Perform wiring work for the indoor unit according to the electrical
wiring diagram and Installation and Operation Manual of the
outdoor unit.
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N O T E
• Connect the cables correctly according to the marks and numbers on
terminal board.
• Install the transition wiring between indoor units connected to the
same outdoor unit.
• Do not connect the main power source cables to the control line
(Terminals A, B, 1 and 2 of TB2). If it is connected, the printed circuit
board (PCB) will be broken.
• Comply with the following points when connecting wires to the
terminal board.
- (A) Attach an insulation tape or a sleeve to each terminal.
- (B) Make sure that the terminals are not too close to the electrical
box, to prevent a short circuit.
- (C) Make sure that the terminals are not too close to each other.
Attach an insulation tape or a sleeve to each terminal.
(B)
(C)
Screw
(A)