Wiring Specifications - Mitsubishi Electric PUZ-HA30NHA4 Service Manual

8

WIRING SPECIFICATIONS

8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
L1
L2
GR
S1
S2
S3
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Outdoor unit model
Outdoor unit power supply
Breaker size
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit earth
Remote controller-Indoor unit
Outdoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. Max. 45 m, 147 ft
If AWG13 used, Max. 50m, 164ft
If AWG13 used and S3 separated, Max. 80m, 262ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max 1500 ft
*3. 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.
*4. Use earth leakage breaker (NV)
Notes: 1.Wiring size must comply with the applicable local and national code.
2.Use copper supply wires.
3.Use wires rated 600V or more for the power supply cables and the indoor/outdoor unit connecting cables.
4.Install an earth longer than other cables.
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.
• Turn on the main power when the ambient temperature is -20 °C, -4 °F or higher.
• In below -20 °C, -4 °F condition, it needs at least 4 hr standby to operate in order to warm the electrical parts.
Simultaneous twin system
L1
L2
GR
S1 S1
S2 S2
S3 S3
1
2
PLA-A18, 30
PCA-A30, PKA-A18, 30, 36
–
1A
15A
HA30
Single, 208/230 V, 60 Hz
*4
30A
28A
40A
2 Min. AWG 10
1 Min. AWG 10
*1
3 AWG 16 (polar)
1 Min. AWG 16
*2
2 AWG 22 (Non-polar)
*3
AC 208/230 V
*3
AC 208/230 V
*3
DC 24 V
*3
DC 12 V
208/230V
Single phase
Isolator
S1
A-Control
S2
Outdoor Unit
S3
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
S1 S1
S2 S2
Indoor unit
S3 S3
Indoor unit earth
1 1
2 2
PLA-A36
PCA-A36
–
2A
15A
3 poles isolator
S1
S2
S3
1
A-Control
Indoor Unit