
52
Electrical Wiring
Wiring system diagram – PACi systems
For single-phase outdoor units
Remote
controller
WHT
BLK
Power supply
220 – 240V ~50/60Hz
Power supply
220 – 240V ~50/60Hz
Ground
Ground Ground
Ground
Ground
AHU Kit
Outdoor unit
INV unit
For three-phase outdoor units
Remote
controller
WHT
BLK
Power supply
220 – 240V ~50/60Hz
Power supply
380 – 415V 3N ~50/60Hz
Ground
Ground Ground
Ground
Ground
AHU Kit
Outdoor unit
INV unit
Notes on wiring system diagrams – All systems
1. Refer to the previous section (Recommended wire lengths and diameters) for
the explanation of “A”, “B”, “C”, “D”, “E” and “F” in the above diagrams.
2. The connection diagram below shows the power supply connector (Section D)
of the AHU Kit’s terminal board (actual appearance may differ slightly).
10P Connector / Section D
1 2 3 4 5 6 7 8 9 10
1 L Power supply
2 N Neutral conductor
3 PE Protective earthing
4 IZ-5 Blower out
5 IZ-3 Blower out
6 OP3 Blower protection
7 2Z-7 Blower protection
8 HU1Humidier
9 HU2Humidier
10 Blind
3. Refrigerant Circuit (R.C.) address should be set on the outdoor unit before turn-
ing the power on.
4. Regarding R.C. address setting, refer to the installation instructions supplied
with the remote controller unit. Auto address setting can be executed by remote
controller automatically. Refer to the installation instructions supplied with the
remote controller unit.
5. Use shielded wires for inter-unit control wiring (C) with shielded woven mesh
grounded on both sides, otherwise misoperation from noise may occur.
Shielded wire
Ground Ground
Connect wiring as shown in the section “Wiring System Diagram”.
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