EN
EN-8
7. Electrical work
Indoor unit model
SLZ-M
Wiring Wire No. × size
(mm
2
)
Indoor unit-Outdoor unit
*1
3 × 1.5 (polar)
Indoor unit-Outdoor unit earth
*1
1 × Min. 1.5
Indoor unit earth
1 × Min. 1.5
Remote controller-Indoor unit
*2
2 × 0.3 (Non-polar)
Circuit rating
Indoor unit (Heater) L-N
*3
—
Indoor unit-Outdoor unit S1-S2
*3
230 VAC
Indoor unit-Outdoor unit S2-S3
*3
24 VDC
Remote controller-Indoor unit
*3
12 VDC
7.1. Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
S1
S2
L
N
1
2
S1
S2
S3
S3
A
B
C
D
E
F
G
S1
S2
L
N
1
2
S1
S2
S3
1
2
S1
S2
S3
S3
1
2
S1
S2
S3
1
2
S1
S2
S3
D
E
F
G
G
G
G
A
B
C
* 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 cables
F Remote controller
G Indoor unit
* Affix label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Note:
Some units cannot be used in a simultaneous twin/triple/quadruple system. Refer to the outdoor unit installation manual for details.
*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. Max. 500 m
(When using 2 remote controllers, the maximum wiring length for the remote controller cables is 200 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.
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 cables
F Remote controller
G Indoor unit
Simultaneous twin/triple/quadruple system
1:1 System
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
Warning:
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