Example of wiring connection
combinations for individual operation
ELB + CB
ELB + CB
E
E
L2L3 N
L1
N
1 2
A B
L1
3N~
400V / 50Hz
1N~
230V / 50 Hz
L1
N
1 2
A B
E
1 2
E
L1
N
1 2
A B
E
L1
N
1 2
A B
*8
*1, *2
*3
*5
*6
*3
*8
*8
*8
*6
*6
*5
*5
*5
*7
E
*7
E
*7
E
*7
E
E
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)
S
hielded twisted 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 one end 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
Remote control
switch (Option)
Remote control
switch (Option)
Control cable
(Field supplied)
S
hielded twisted 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.
Remote control
switch (Option)
Earth
wiring
For SET-FREE Series
Select wiring capacity according to the following table. Install the ELB and the main switch to each as shown in the figures below.
Total indoor
unit capacity
Power Source
Earth wire
size (mm
2
)
*12
Transition wire
size for control
circuit (mm
2
)
*13
Remote control
switch cable
(mm
2
)
ELB
Main Switch
Minimum
wire size
(mm
2
)
Wiring
length (m)
*1)
*11
n / A / mA
Switch
capacity (A)
*10
Fuse
capacity (A)
or CB *10
< 7A
2 / 40 / 30
30
15
2.5
30
3.5
Shielded twisted
pair cable
0.75 ~ 1.25
Connect to both
ends of shield
tube to earth.
Shielded twisted
pair cable
0.75
Connect to one
end of shield
tube to earth
<10A
30
20
4.0
34
< 15A
30
30
6.0
34
ELB: Earth Leakage Breaker
; CB: Circuit Breaker
*
1):
The above wiring line length shows the case that the indoor units are connected in series. (The voltage drop is within 2%.) When the power
source wiring is longer than the above value, select the minimum wiring size which the voltage drop is within 2%.
?
N O T E
• On the outside indoor unit, the power source cable, control cable and remote control cable shall be installed separately as possible.
• The dip switches setting in the outdoor unit should be performed according to “Installation & Operation Manual” of the outdoor unit.Pay attention
that the transition wiring for the remote control switch is required in the following cases.:
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
ELECTRICAL WIRING
PMML0552 rev.1 - 02/2021 - A10635790A
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