18.2.2
Details of electrical wiring connection
The electrical wiring capacity of the outdoor unit should be
referred according to “Installation & Operation Manual” of the
outdoor unit. Setting dip switch may be required depending on
the combination with the outdoor unit.
1
Connect the power source cables (L1 and N (L2) phases
(1~ 220-240V 50/60Hz)) to the terminal board correctly.
A
B
1
2
L1
(Mp)
N
TB2
TB1
L1
TB1
L2
Remote
Control
Transmission
wires (H-LINK)
Power source line
3-Phase 4 Wires: L1, N
Power source line
3-Phase 3 Wires: L1, L2
2
Connect the control cables between the indoor unit and the
outdoor unit correctly. Check to ensure that the terminal
for power source cable (Terminals “L1” to “L1” and “N(L2)”
to “N(L2)” of each terminal board (1~ 220-240V 50/60Hz))
between the indoor unit and the outdoor unit coincide
correctly. If not, some component will be damaged.
3
Use the shielded twist pair cable for control between the
outdoor unit and the indoor units. They are connected to the
terminals 1 and 2 of t he terminal boards. The remote control
switch cable is connected to the terminals A and B of each
indoor unit terminal board.
Earth
Earth
Shielded twist pair cable
Wires
Shield
!
D A N G E R
• Tightly secure wirings to the terminal board according to the
specified torque. If tightening the terminals is not completed,
heat generation, an electric shock or a fire will occur at the
terminal connection.
•
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.
• Fix the terminals that do not touch to the electrical box surface. If
the terminals are closed to the surface, it may cause activation of
ELB, heat generation at terminal connection, a fire or an electric
shock.
!
C A U T I O N
•
Separate the power supply wiring from the terminal block for controller
and
communication cables (TB2).
•
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.
•
Pay attention to followings when wires are connected to terminal board.
(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.
(A)
(B)
(C)
Screw
For UTOPIA Series
Example of Wiring Connection (Combinations for Simultaneous Operation)
Control cable
Shielded twist pair cable 0.75mm
2
This cable dose not need any polarity.
Do not apply an excessively high voltage
to this cable. (Rated voltage: 5V)
Connect to both ends of shield tube to
earth.
E
E
L2L3 N
L1
N
1 2
A B
L1
3N~
400V / 50Hz
1N~
230V 50Hz
L1
N
1 2
A B
ELB + CB
E
1 2
E
L1
N
1 2
A B
E
L1
N
1 2
A B
*8
*1, *2
*3
*5
*3
*5
*5
*5
*6
*6
*6
*6
*6
*7
E
*7
*7
*7
E
ELB + CB
Remote control
switch (Option)
Outdoor unit
Indoor unit number 1
Main
switch
Power source cable
Pay attention to the
phase of power
source when wiring.
Indoor unit number 4
Indoor unit number 3
Indoor unit number 2
Main switch
Pull box
Remote control switch cable
(Field supplied)
2 core twist pair cable 0.75mm
2
. This
cable dose not need any polarity.
Do not apply an excessively high voltage
to this cable. (Rated voltage: 5V)
Connect to both ends of shield tube to
earth.
The details of wire, ELB and main
switch for outdoor unit shall be
referred to “Installation & Operation
Manual” of connected outdoor unit.
Pull box
Pull box
Earth
wiring
ELECTRICAL WIRING
PMML0498 rev.1 - 11/2018 - P5417093
25
ENGLISH
