Hitachi RCD-0.8FSN3 Installation And Operation Manual page 33

ELECTRICAL WIRING
17.2.4 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.
Remote control switch cable (Field supplied)
Shielded twist pair cable 0.75mm
does not need any polarity. Do not apply an
excessively high voltage to this cable (Rated
* voltage: 5V)
*
Main
switch
*
Earth wiring
Power source cable
Pay attention to the phase of
power source when 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.
• Example of Wiring Connection (Twin, Triple and Quad Combinations for Simultaneous Operation)
*
Main
*
Main switch
switch
Outdoor unit
Earth
*
wiring
Power source cable
Control cable
Pay attention to the
phase of power source
Shielded twist pair cable 0.75mm
when wiring.
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.
29 PMML0425A rev.0 - 02/2016 - P5415720
Case A
Remote control switch
(Option)
. This cable
2
Earth 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)
Remote
control switch
*
(Option)
Indoor unit number 1
Pull box
2
*
*
Main
switch
*
Power source cable
Control cable
Pay attention to
Shielded twist pair cable 0.75mm
the phase of power
This cable does not need
source when wiring.
any polarity. Do not apply an
excessively high voltage to
this cable. (Rated voltage: 5V)
Connect both ends of shield tube
to earth.
Indoor unit number 2 Indoor unit number 3
Pull box
Remote control switch cable (Field supplied)
2 core twist pair cable 0.75mm . This cable
2
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.
Case B
*
Remote control switch
(Option)
Remote control switch cable
(Field supplied)
2
Shielded twist pair cable
0.75mm . This cable does not
2
need any polarity. Do not apply
an excessively high voltage to
this cable. (Rated voltage: 5V)
Connect both ends of shield
tube to earth.
Indoor unit number 4
Pull box
The details of wire, ELB, CB and main
*
switch for outdoor unit shall be referred
to Installation and Operation Manual of
connected outdoor unit.