6. Electrical work
6.1.1. Indoor unit power supplied from outdoor unit (A-control application)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit-Outdoor unit
Indoor unit earth
Wired remote controller-Indoor unit
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Wired remote controller-Indoor unit
*1. Max. 50 m, 165 ft
*2. The 3 m, 9 ft wire is attached in the wired remote controller accessory. Max. 500 m, 1500 ft
*3. The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulataed by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 300V or more for the power supply cords and the indoor unit/outdoor unit connecting cords.
4. Install an earth longer than other cords.
ON/OFF
MODE
CHECK
TEST RUN
2,4
10
C
L1
A
B
L2
GR
S1
S2
S3
Simultaneous twin/triple/four system
C
L1
A
B
L2
GR
S1
S2
S3
*1
*2
*3
*3
*3
A
TEMP
3
FAN
AUTO STOP
VANE
AUTO START
LOUVER
h
min
SET
RESET
CLOCK
Fig. 6-7
1:1 System
F
CN105
(RED)
D
I
S1
S2
H
S3
1
E
G
2
F
F
D
S1
S1
S2
S2
S3
S3
1
1
E
G
G
2
2
PKA-A·HA4
1A
15A
3 × AWG16 (Polar)
1 × Min. AWG16
2 × AWG22 (Non-polar, unshielded)
AC 208/230 V
DC24 V
DC12 V
6.2. Remote controller
6.2.1. For wired remote controller
1) Two wired remote controllers setting
If two wired remote controllers are connected, set one to "Main" and the other to
"Sub". For setting procedures, refer to "Function selection of remote controller" in
the operation manual for the indoor unit.
6.2.2. For IR wireless remote controller
1) Setting (Fig. 6-7)
Insert batteries.
Press the SET button with something sharp at the end.
blinks and Model No. is lighted.
Press the temp
Press the SET button with something sharp at the end.
and Model No. are lighted for three seconds, then turned off.
PKA (A12, A18)
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Wired remote controller
Indoor unit
Indoor unit earth
Indoor controller board
Radio frequency interface for RF thermostat
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Wired remote controller
Indoor unit
Indoor unit earth
■
Only for wired remote controller.
button to set the Model No.
heat pump models
cooling only models
002
034