Field Electrical Wiring (Power Wiring Specifications) - Mitsubishi Electric PUHZ-HRP71VHA 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)
Outdoor unit power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit ear th
Remote controller-Indoor unit
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. A breaker with at least 3 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV).
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
The breaker shall be provided to ensure disconnection of all active phase conductor of the supply.
*2. Refer to 9-3.
*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 insulated by the transformer or other device.
Caution:
Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
Notes: 1. Wiring size must comply with the applicable local and national code. .
2. Power supply cables and Indoor/Outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable.
(Design 60245 IEC 57)
3. Use an earth wire which is longer than other cables so that it wil not become disconnected when tension is applied.
Power supply
A-Control
Outdoor Unit
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.
1:1 system Electrical wiring
Outdoor
unit
Unit
L
power
N
supply
Indoor/outdoor
unit connection
cable
S1
Earth leakage breaker
S2
Wiring circuit breaker or
S3
isolating switch
OCH425F
HRP71VHA(2), HRP100VHA
~/N (single), 50 Hz,
230 V
*1
32 A
3 Min. 4
*2 3 1.5 (Polar
*2
1 Min. 1.5
*3
2 0.3 (Non-polar
*4
AC 230 V
*4
AC 230 V
*4
DC 24 V
*4
DC 12 V
Isolator
S1
S2
S3
Indoor
unit
1
Remote
controller
2
S1
S2
S3
21
HRP100VHA2
~/N (single), 50 Hz,
230 V
40 A
3 Min. 6
) 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
S1
S2
Indoor Unit
S3
Synchronized twin system Electrical wiring
• Synchronized twin
Outdoor
unit
L
Unit
power
N
supply
S1
Earth leakage breaker
S2
Wiring circuit breaker or
S3
isolating switch
HRP100, 125YHA(2)
3N ~ (3phase), 50 Hz,
400 V
16 A
5 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
A-Control
Indoor
unit
1
Remote
controller
2
Indoor/outdoor
unit connection
cable
S1
S2
S3
Indoor
unit
1
2
S1
S2
S3