11
•
If stranded wires are used, do not solder the front end of the
wires.
•
•
Connect proper wires securely and fix the wires so that exter-
nal force will not be imposed on the terminals.
Use an appropriate screwdriver to tighten the terminal
screws. The screw heads may be damaged if the screwdriver
is too small and the terminal screws will not be tightened
properly.
•
•
Do not tighten the terminal screws excessively, or otherwise
the screw heads may be damaged.
Refer to the table below for the required tightening torque
values of the terminal screws.
Tightening torque (N·m)
Terminal block for remote controller
and transmission wires
0.80 - 0.96
Terminal block for power supply
1.18 - 1.44
Install an earth leakage breaker.
The installation of an earth leakage breaker is imperative for the
prevention of electric shocks and fire accidents.
No. 1 system
When using 1 remote controller for 1 indoor uni t
No. 2 system
For group controller use with 2 remote controllers
No. 3 system
When inc luding BS unit
1. If no earth leakage breaker is required, install a breaker or
load switch with a fuse for the wiring. If an earth leakage
breaker is required, make sure that the earth leakage
breaker is designed to protect the air conditioner from
ground faults, overloads, and short circuiting.
2. The remote controller wiring (P1 and P2) and transmission
wiring (F1 and F2) have no polarity.
• Set one of the remote controllers to main and the other to sub
in the case of remote control with two remote controllers.
Switching Main/Sub
(1) Insert a screwdriver into the clearance between the
grooves of the lower casing and the upper casing to remove
the upper casing. (2 grooves) (The remote controller PCB is
attached to the upper casing.)
Note)
There is no need to set the indoor unit
address when using group control.
(It is automatically set when the power
is turned on.)
Lower part of
remote controller
Upper part of
remote controller
Insert the screwdriver here and gently work
off the upper part of remote controller.
(2) Set the main/sub switch on one of the remote controller
PCBs to sub. (Keep the switch of the other remote controller
PCB set to main.)
Only one remote
controller needs to be
changed if factory
settings have
remained untouched.
M
S
S
S
M
(Factory setting)
Remote controller
PC board
10-
2
WIRING EXAMPLE
!
WARNING
PRECAUTIONS
P1 P2 F1 F2 T1 T2
P1 P2
P1 P2 F1 F2 T1 T2
P1 P2
L N
P1 P2 F1 F2 T1 T2
P1 P2
F1 F2 F1F2
OUT/D
IN/D
L
LLL NN
NN
Indoor
unit A
Indoor
unit B
Indoor
unit C
Power
supply
230V
50 Hz
Most downstream
indoor unit
Control
box
L N
L N
P1 P2 F1 F2 T1 T2
P1 P2
P1 P2 F1 F2 T1T2
P1 P2
P1 P2
P1 P2 F1 F2 T1 T2
F1 F2 F1F2
IN/D
OUT/D
Outdoor unit
Power
supply
230V
50 Hz
Indoor
unit A
Indoor
unit B
Most downstream
indoor unit
Control
box
(Option)
For use with 2 remote
controllers
L N
N
L
L N
L N
In case of
group control
Remote controller
Remote controller
P1 P2 F1 F2 T1 T2
P1 P2
F1 F2 F1F2
OUT/D
IN/D
F1 F2 F1 F2
OUT/D
IN/D
Control
box
Control
box
Outdoor
unit
BS
unit
Power
supply
230V
50 Hz
Indoor
unit A
L
LLL NN
NN
L N
10-
3
CONTROL BY 2 REMOTE CONTROLLERS
(C
ontrolling 1 unit by 2 remote controllers)
Remote controller
(Option)
Remote controller
(Option)
Remote controller
(Option)
Remote controller(Option)
Remote controller
(Option)
