Wiring Specifications - Mitsubishi Electric PUZ-A12NKA7 Service Manual

WIRING SPECIFICATIONS

8
8-1. 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.
1:1 System
C
L1
B
A
L2
GR
D
S1
S2
S3
E
G
Note: Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
O u d t o r o u n t i m o d l e
Outdoor unit power supply
Outdoor unit input capacity Main switch (Breaker) *1
Outdoor unit power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L1-L2 (single)
Indoor unit-Outdoor unit S1-S2 (single) *5
Indoor unit-Outdoor unit S2-S3 (single) *5
Remote controller-Indoor unit
*1. Be sure to earth ground construction work. As required to the leakage prevention measures.
*2. Max. 50 m, 164 ft
S3 separated, Max. 262 ft [80 m]
*3. Max. 100 ft [30 m]
*4. The 30 ft [10 m] wire is attached in the remote controller accessory.
*5. The figures are NOT always against the ground.
S3 terminal has 24 V DC 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, the Indoor-Outdoor connecting cable and the water heater-Outdoor connecting cable shall not be lighter than polychloroprene
sheathed flexible cord. (Design 60245 IEC 57)
3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied.
Warning:
In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power
line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power
is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire, or communication failure.
OCH636A
A Outdoor unit power supply
F
B Wiring circuit breaker or isolating switch
C Outdoor unit
D Indoor unit/outdoor unit connecting cords
E Remote controller
S1
F Indoor unit
S2
S3
G Indoor unit earth
1
2
A 1 2 A 1 8
~/N (single), 60Hz, ~/N (single), 60Hz,
208/230 V 208/230 V
15 A 15 A
2 x Min. AWG 14 2 × Min. AWG 14
*2 3 x AWG 14 (polar) 3 x AWG 14 (polar)
*2 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar) 1 x Min. AWG 14 (polar)
*4 2 × AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar) 2 x AWG 22 (Non-polar)
*5 208/230 V AC 208/230 V AC
208/230 V AC 208/230 V AC
24 V DC 24 V DC
*5 12 V DC 12 V DC
208/230V
Single phase
Isolator
S1
A-Control
S2
Outdoor Unit
S3
.
A 2 4 A 3 0
~/N (single), 60Hz, ~/N (single), 60Hz,
208/230 V 208/230 V
25 A 25 A
2 × Min. AWG 12 2 × Min. AWG 12
3 x AWG 14 (polar) 3 x AWG 14 (polar)
208/230 V AC 208/230 V AC
208/230 V AC 208/230 V AC
24 V DC 24 V DC
12 V DC 12 V DC
3 poles isolator
S1
S2
S3
20
A 3 6 A 4 2
~/N (single), 60Hz, ~/N (single), 60Hz,
208/230 V 208/230 V
30 A 30 A
2 × Min. AWG 10 2 × Min. AWG 10
3 x AWG 14 (polar) 3 x AWG 14 (polar)
208/230 V AC 208/230 V AC
208/230 V AC 208/230 V AC
24 V DC 24 V DC
12 V DC 12 V DC
A-Control
Indoor Unit