15.2.4
Details of electrical wiring connection
The electrical wiring capacity of the outdoor unit should be referred according to Installation and Operation Manual of the outdoor
unit. Dip switch setting may be required depending on the combination with the outdoor unit.
For UTOPIA series
Select wiring capacity according to the table. Install the ELB, CB and the main switch to each as shown in the following figures. The
control cable length between the outdoor unit and the indoor unit shall be less than 75m.
Case A
Case B
*
*
*
Main
switch
Remote control switch cable (Field supplied)
Shielded twist pair cable 0.75mm
2
. This cable
does not need any polarity. Do not apply an
excessively high voltage to this cable (Rated
voltage: 5V)
Remote control switch
(Option)
Control cable
Shielded twist pair cable 0.75mm
2
.
This cable does not need any polarity.
Do not apply an excessively high voltage
to this cable. (Rated voltage: 5V)
Power source cable
Pay attention to the phase of
power source when wiring.
Earth wiring
Earth wiring
(*)The details of wire, ELB, CB and main switch for outdoor unit shall be referred
to Installation and Operation Manual of connected outdoor unit.
*
*
*
*
Main
switch
Remote control switch cable
(Field supplied)
Shielded twist pair cable
0.75mm
2
. This cable does not
need any polarity. Do not apply
an excessively high voltage to
this cable. (Rated voltage: 5V)
Connect both ends of shield
tube to earth.
Power source cable
Pay attention to
the phase of power
source when wiring.
Control cable
Shielded twist pair cable 0.75mm
2
This cable does not need
any polarity. Do not apply an
excessively high voltage to
this cable. (Rated voltage: 5V)
Connect both ends of shield tube
to earth.
Remote control switch
(Option)
• Example of Wiring Connection (Twin, Triple and Quad Combinations for Simultaneous Operation)
*
*
*
*
*
Control cable
Shielded twist pair cable 0.75mm
2
This cable does 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.
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
does 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, CB and main
switch for outdoor unit shall be referred
to Installation and Operation Manual of
connected outdoor unit.
Pull box
Pull box
Earth
wiring
ENGLISH
ELECTRICAL WIRING
PMML0549 rev.1 - 02/2021 - A10761230A
29
Summary of Contents for RCD-2.0FSR
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