Wiring Specifications; Field Electrical Wiring; Synchronized Twin And Triple System Electrical Wiring - Mitsubishi Electric Mr.SLIM PU-P71VHA Service Manual

9

WIRING SPECIFICATIONS

9-1. FIELD ELECTRICAL WIRING (power wiring specifications)
Outdoor unit model
Outdoor unit Power supply
Outdoor unit input capacity
Main switch (Breaker)
Max. Permissive System Impedance ( )
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L-N
Outdoor unit L1-N, L2-N, L3-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
*2. Max. 45 m
If 2.5 mm used, Max. 50 m
2
If 2.5 mm 2 used and S3 separated, Max. 80 m
*3. The 10 m wire is attached in the remote controller accessory.
*4. 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. Power supply cords and Indoor/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.
Caution:
Do not push the contactor button (52C) on the outdoor unit, otherwise the compressor may be damaged.
1:1 system
Outdoor
unit
Unit
L
power
N
supply
Indoor/outdoor
unit connection
cable
S1
Earth leakage breaker
S2
wiring circuit breaker or
S3
isolating switch
OC379F
P71V
~/N (single), 50 Hz, 230 V
*1 32 A
0.06
2 Min. 4
1 Min. 4
*2
*3
*4
*4
*4
*4
Power supply
Isolator
S1
A-Control
S2
Outdoor Unit
S3
Indoor
unit
1
Remote
controller
2
S1
S2
S3
P100V P71Y
16 A
0.23
4 Min. 1.5
1 Min. 1.5
3 1.5 (polar)
1 Min. 1.5
2 0.3 (Non-polar)
AC 230 V
AC 230 V
DC 24 V
DC 12 V
3 poles isolator

Synchronized twin and triple system Electrical wiring

• Synchronized twin
Unit
power
supply
Earth leakage breaker
wiring circuit breaker or
isolating switch
• Synchronized triple
Unit
power
supply
Earth leakage breaker
wiring circuit breaker or
isolating switch
23
P100Y P125Y
3N~(3phase), 50 Hz, 400 V
25 A
0.22 0.14
4 Min. 2.5
1 Min. 2.5
S1
A-Control
S2
Indoor Unit
S3
Outdoor Indoor
unit unit
L 1
Remote
controller
N 2
Indoor/outdoor
unit connection
cable
S1 S1
S2 S2
S3 S3
Outdoor Indoor
unit unit
L 1
Remote
controller
N 2
Indoor/outdoor
connection cable
S1 S1
S2 S2
S3 S3
P140Y
0.12
Indoor
unit
1
2
S1
S2
S3
Indoor Indoor
unit unit
1
1
2 2
S1 S1
S2 S2
S3 S3