Hitachi RPC-1.5FSR Installations- Und Betriebshandbuch Seite 65

ELECTRICAL WIRING
d. Connecting remote control switch in case of connecting
between refrigerant cycles.
Indoor unit
Indoor unit
Outdoor
unit
Remote control
switch
Individual
Simultaneous
(Thermo ON/OFF individually)
?
N O T E
• The dip switches setting in the outdoor unit should be performed
according to Installation and Operation Manual of the outdoor unit.
• Pay attention that the transition wiring for the remote control switch is
required in the following cases:
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.
Remote control switch cable
Shielded twist pair cable 0.75mm
cable 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.
25 PMML0551 rev.1 - 02/2021 - A10762310A
Indoor unit Indoor unit
Outdoor
unit
Remote
Remote control switch
control switch
Individual
Case A
Remote control switch (Option)
(Field supplied)
. This
2
Earth
wiring
Control cable
Shielded twist pair cable 0.75mm
This cable does not need any polarity.
Do not apply an excessively high voltage
to this cable. (Rated voltage: 5V)
a The following functions are set to the sub unit which is not
installed the remote control switch.
- "Remote ON/OFF function, 1, 2 and 3" (External Input /
Output Function)
- "Power supply ON/OFF function, 1 and 2" (Function
Selection)
- "Prohibiting remote control after manual stoppage"
(External Input / Output Function)
- "Group setting by the centralized controller"
b The combination of twin, triple or quad is controlled by one
remote control switch.
c The address of the indoor unit is changed from the remote
control switch.
d The multiple panels with the motion sensor are controlled by one
remote control switch.
Main
switch
Power source 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
2
excessively high voltage to this
cable. (Rated voltage: 5V)
Case B
Remote control switch
(Option)
Control cable Remote control switch cable
(Field supplied)
2
Shielded twist pair cable
0.75mm . This cable does
2
not need any polarity. Do not
apply an excessively high
voltage to this cable. (Rated
voltage: 5V)