Table of Contents
Advertisement
• 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.
Terminal block for remote controller
and transmission wirings
Terminal for power supply
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
Main
switch
Branch Selector
unit
(Only for
Heat
recovery system)
Indoor unit
Remote controller
1. When using 1 remote controller for 1 indoor unit.
(Normal operation)
Power supply
Outdoor unit
Power supply
single phase
single phase
Control box
IN/D OUT/D
208/230 V
208/230 V
F
1
F
2
F
1
F
2
L
L
L
L
1
2
1
2
60 Hz
No. 1
System
L
L
P
P
F
F
T
T
L
L
P
2
1
1
2
1
2
1
2
2
1
1
Indoor
Indoor
unit A
unit B
P
P
1
2
3P086154-3R
English
Tightening torque
[lbf·ft. (N·m)]
0.65 ± 0.07
(0.88 ± 0.08)
0.965 ± 0.095
(1.31 ± 0.13)
Power supply wiring
Transmission wiring
Switch
Fuse/Breaker
Power supply
Power supply
single phase
single phase
208/230 V
208/230 V
L
L
L
L
1
2
1
2
60 Hz
60 Hz
60 Hz
P
F
F
T
T
L
L
P
P
F
F
T
T
L
L
P
P
F
F
T
T
2
1
2
1
2
2
1
1
2
1
2
1
2
2
1
1
2
1
2
1
2
Indoor
Most
downstream
unit C
indoor unit
P
P
P
P
P
P
1
2
1
2
1
2
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.
Power supply
Power supply
Outdoor unit
single phase
single phase
208/230 V
208/230 V
Control box
IN/D OUT/D
60 Hz
60 Hz
F
1
F
2
F
1
F
2
L
L
L
L
1
2
1
2
No. 2
System
Indoor
unit A
L
L
P
P
F
F
T
T
L
L
P
P
F
2
1
2
1
1
2
1
2
1
2
1
2
Indoor
unit B
P
P
1
2
3. When including Branch Selector unit
Power supply
Outdoor unit
single phase
Branch
Control box
208/230 V
IN/D OUT/D
Selector
F
1
F
2
F
1
F
2
L
L
60 Hz
1
2
unit
No. 3
Control box
System
OUT/D
F
Indoor unit A
L
L
P
P
F
F
T
T
2
1
1
2
1
2
1
2
P
P
1
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.
Power supply
Power supply
single phase
single phase
208/230 V
208/230 V
60 Hz
60 Hz
L
L
L
L
1
2
1
2
Most
downstream
indoor unit
F
T
T
L
L
P
P
F
F
T
T
L
L
P
P
F
F
T
T
2
1
2
1
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
Indoor
unit C
P
P
P
P
1
2
1
2
For use with 2
remote controllers
Power supply
single phase
Branch
208/230 V
Selector
L
L
60 Hz
1
2
unit
Control box
IN/D
OUT/D
IN/D
F
F
F
F
F
F
F
1
2
1
2
1
2
1
2
Most
L
L
P
P
F
F
T
T
1
2
2
1
1
2
1
2
downstream
indoor unit
P
P
1
2
10
Advertisement
Table of Contents
