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ELECTRICAL WIRING
15.3 WIRING CONNECTION
!
D A N G E R
•
Tightly clamp wires by the cord clamp after the wiring is
completed to the terminal board. If not completed, it may cause
a fire by biting wires.
•
Ensure that L1 and N cables part, between the cord anchorage
and terminal board connection, become taut before the earthing
conductor if the cords slips out of the cord anchorage. When
connecting power supply cables, the wire shall be covered by a
fixed wired duct (field supplied).
1 The wiring connection for the indoor unit is shown below.
Cap
2 The wiring connection for electrical box is as follows.
a. Open the air inlet grille.
b. Remove the electrical box cover.
c. Connect the control cable, power source cable and
remote control switch cable.
Electrical box
15.4 DIP SWITCH SETTING
1 Turn OFF all the power supply to the indoor and the outdoor
units before dip switch setting. If not, the setting is invalid.
2 The positions of dip switches on PCB are shown in the figure
below.
28
PMML0551 rev.4 - 07/2023 - A10762310A
Upper side
Wire connection
Rear side
Wire connection
Cap
PCB1
Terminal board
(white)
A B
Remote control
Control
switch cable
Transition wiring between indoor
units
(Case that multiple indoor units are operated
by one remote control switch.)
This is not required for the simultaneous
operation of UTOPIA series at a maximum of
4 indoor units.
d. After the wiring is completed, attach the electrical box
cover again with care in order not to bite wires.
Wire for fan motor
DSW4
(Unit model code setting)
Indoor unit PCB
(Refrigerant cycle number setting)
DSW9
(Optional function setting)
(Indoor unit number setting)
Terminal board (white)
Terminal board (black)
Earth terminal
Power source line
Controller cable
1
2
cable
RSW1 & DSW5
DSW7
(Fuse recover)
DSW3
(Capacity setting)
RSW2 & DSW6
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