10
3P086154-3R
English
•
Use a proper screw driver for tightening the terminal
screws.
If an improper screw driver is used, it may damage the
screw head and a proper tightening cannot be car ried out.
•
If a terminal is over tightened, it may be damaged.
Refer to the table shown below for tightening torque of
terminals.
Tightening torque
[lbf·ft. (N·m)]
Terminal block for remote controller
and transmission wirings
0.65 ± 0.07
(0.88 ± 0.08)
Terminal for power supply
0.965 ± 0.095
(1.31 ± 0.13)
Ground terminal
•
Do not carry out soldering finish when stranded wirings
are used.
9-2 WIRING EXAMPLE
•
Fit the power supply wiring of each unit with a switch and
fuse as shown in the drawing.
COMPLETE SYSTEM EXAMPLE (3 systems)
Power supply wiring
Transmission wiring
Switch
Fuse/Breaker
Power supply
Main
switch
Remote controller
Indoor unit
Branch Selector
unit
(Only for
Heat
recovery system)
1. When using 1 remote controller for 1 indoor unit.
(Normal operation)
L
1
L
2
L
1
L
2
IN/D OUT/D
F1 F2 F1 F2
Control box
L
1
L
2
F
1
P
2
P
1
F
2
T
1
T
2
F
1
F
2
T
1
T
2
F
1
F
2
T
1
T
2
F
1
F
2
T
1
T
2
L
1
L
2
Outdoor unit
No. 1
System
Indoor
unit A
Indoor
unit B
Indoor
unit C
Most
downstream
indoor unit
Power supply
single phase
208/230 V
60 Hz
Power supply
single phase
208/230 V
60 Hz
Power supply
single phase
208/230 V
60 Hz
Power supply
single phase
208/230 V
60 Hz
L
2
L
1
L
2
L
1
L
2
L
1
L
2
L
1
P
2
P
1
P
2
P
1
P
2
P
1
P
2
P
1
P
2
P
1
P
2
P
1
P
2
P
1
2. For group control or use with 2 remote controllers
Note: It is not necessary to designate
indoor unit address when using group
control. The address is automatically
set when power is activated.
L
1
L
2
L
1
L
2
L
1
L
2
Control box
Outdoor unit
No. 2
System
Indoor
unit A
Indoor
unit B
Indoor
unit C
Most
downstream
indoor unit
For use with 2
remote controllers
IN/D OUT/D
F
1
F
2
F
1
F
2
F
1
F
2
P
1
P
2
T
1
T
2
F
1
F
2
T
1
T
2
F
1
F
2
T
1
T
2
F
1
F
2
T
1
T
2
L
2
L
1
L
2
L
1
L
2
L
1
L
2
L
1
Power supply
single phase
208/230 V
60 Hz
Power supply
single phase
208/230 V
60 Hz
Power supply
single phase
208/230 V
60 Hz
Power supply
single phase
208/230 V
60 Hz
L
1
L
2
P
2
P
1
P
2
P
1
P
2
P
1
P
1
P
2
P
1
P
2
P
1
P
2
3. When including Branch Selector unit
IN/D OUT/D
F
1
F
2
F
1
F
2
IN/D
OUT/D
F
1
F
2
F
1
F
2
L
1
L
2
F
1
F
2
P
1
P
2
T
1
T
2
Branch
Selector
unit
No. 3
System
Outdoor unit
Indoor unit A
Most
downstream
indoor unit
Control box
Control box
IN/D
OUT/D
F
1
F
2
F
1
F
2
Branch
Selector
unit
Control box
L
1
L
2
F
1
F
2
T
1
T
2
L
2
L
1
L
2
L
1
Power supply
single phase
208/230 V
60 Hz
Power supply
single phase
208/230 V
60 Hz
P
1
P
2
P
1
P
2
P
1
P
2
[ PRECAUTIONS ]
1.
Do not ground the equipment on gas pipes, water pipes
or lightning rods, or crossground with telephones. Im-
proper grounding could result in electric shock.
WARNING
This equipment can be installed with a Ground-Fault
Circuit Interrupter (GFCI). Although this is a recognized
measure for additional protection, with the grounding
system in North America, a dedicated GFCI is not nec-
essary.
9-3 FOR CONTROL WITH 2 REMOTE CONTROL-
LERS (TO CONTROL 1 INDOOR UNIT WITH 2
REMOTE CONTROLLERS)
•
For control with 2 remote controllers, set one remote con-
troller as Main and the other remote controller as Sub.
< Changeover method from Main to Sub and vice versa >
Refer to the installation manual attached to the remote
controller.
< Wiring method >
(1)
Remove the control box cover.
(2)
Carry out additional wiring from the remote controller
2 (Sub) to the terminals (P1, P2) for remote controller
wiring on the terminal block (X2M) in the control box.
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