8
6. Electrical work
6.1.1. Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1 System
* Affix label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cords
F Remote controller
G Indoor unit
*1. Max. 45 m
If 2.5 mm
2
used, Max. 50 m
If 2.5 mm
2
used and S3 separated, Max. 80 m
*2. The 10 m wire is attached in the remote controller accessory. Max. 500 m
*3. The figures are NOT always against the ground.
S3 terminal has 24 VDC against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2.
Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord.
(Design 60245 IEC 57)
3. Install an earth longer than other cables.
4. Indoor and outdoor connecting wires have polarities. Make sure to match the terminal number (S1, S2, S3) for correct wirings.
5. Wiring for remote controller cable shall be apart (5 cm or more) from power source wiring so that it is not influenced by electric noise
from power source wiring.
6.
The unit shall be installed in accordance with Electrical installation code of The Engineering Institute of Thailand under His Majesty
the King’s Patronage (EIT).
1:1 System
S1
S2
L
N
1
2
S1
S2
S3
S3
A
B
C
D
E
F
G
Indoor unit-Outdoor unit
Indoor unit model
*1
Indoor unit-Outdoor unit earth
*1
Indoor unit earth
Remote controller-Indoor unit
*2
Indoor unit (Heater) L-N
*3
Indoor unit-Outdoor unit S1-S2
*3
Indoor unit-Outdoor unit S2-S3
*3
Remote controller-Indoor unit
*3
PCY
3
×
1.5 (polar)
1
×
Min.1.5
1
×
Min.1.5
2
×
0.3 (Non-polar)
-
220 V AC
24 VDC
12 VDC
Circuit
rating
Wiring
Wire No
.
×
si
ze
(mm
2
)
