En-17
7.3. Knockout hole for wiring
CAUTION
Seal the wiring route hole with duct seal (locally purchased) such that there are no
gaps.
Small insects or animals that are trapped in the outdoor unit may cause a short circuit
in the electrical component box.
Be careful not to deform or scratch the panel while opening the knockout holes.
After opening the knockout holes, remove burr on the edges to prevent damaging the
cables. It is recommended to apply rust proof paint on the edges to prevent rust.
[Unit: in (mm)] [Unit: in (mm)]
AOUA72/96 AOUA120 AOUA144/168/192
1-15/16 (50)
1-15/16 (50)
1-3/8 (34.5)
1-3/8 (34.5)
1-3/4 (43.7) 1-3/4 (43.7)
7/8 (22.2)
7/8 (22.2)
7.4. Selecting power supply cable and breaker
CAUTION
Obtain the distribution network operator's agreement about the power capacity of the
power supply system, specification of the cable and etc. when you connect the outdoor
unit with the power supply.
Regulation of wire size and circuit breaker differs from each locality, please refer in ac-
cordance with local rules.
• Select the power cable type and size in accordance with relevant local and national
regulations.
• Make sure the specifications for local wiring power cable and branch wiring are in com-
pliance with local code.
• Select the correct cable type and size according to the country or region’s regulations.
• Use copper conductors only.
• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the wire
diameter when the wire length is longer.
(1) Selecting power supply cable and breaker when connecting 1 outdoor unit.
Refer to the table for the wiring and breaker specifications of each installation condition.
Model Power source MCA MAX. CKT. BKR GFEB
AOUA72ULBV5
208/230 V, 3~,
60 Hz
29.3 A 40 A
30-100 mA
0.1 s or less
AOUA96ULBV5 37.7 A 50 A
AOUA120ULBV5 43.9 A
60 A
AOUA144ULBV5 49.8 A
AOUA168ULBV5 59.8 A 70 A
AOUA192ULBV5 71.0 A 80 A
AOUA72ULCV5
460 V, 3~,
60 Hz
17.3 A 20 A
AOUA96ULCV5 21.9 A 25 A
AOUA120ULCV5 24.9 A 30 A
AOUA144ULCV5 29.8 A 35 A
AOUA168ULCV5 34.8 A 40 A
AOUA192ULCV5 41.5 A 50 A
MCA: Minimum Circuit Amp.
MAX. CKT. BKR: Maximum Circuit Breaker
• Select the appropriate breaker of the described specification according to the national or
regional standards.
• Select the breaker that enough load current can pass through it.
In case of connected outdoor unit
Breaker 1: Ground Fault Equipment Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker (MAX. CKT. BKR)
For Heat Pump system
208/230 V ~ 60 Hz
• AOUA72/96/120/144/168/192ULBV5: 208/230 V, 3 ~, 60 Hz
• AOUA72/96/120/144/168/192ULCV5: 460 V, 3 ~, 60 Hz
Transmission cable
Remote controller cable
Breaker 1
Breaker 1
Breaker 2
Breaker 2
Outdoor unit power supply cable
Indoor unit power
supply cable
For Heat Recovery system
208/230 V ~ 60 Hz
208/230 V ~ 60 Hz
• AOUA72/96/120/144/168/192ULBV5: 208/230 V, 3 ~, 60 Hz
• AOUA72/96/120/144/168/192ULCV5: 460 V, 3 ~, 60 Hz
Transmission cable
Remote controller cable
Breaker 1
Breaker 1
Breaker 1
Breaker 2
Breaker 2
Breaker 2
Outdoor unit power supply cable
RB unit power
supply cable
Indoor unit power
supply cable
(2) Selecting main breaker and main power supply cable when connecting multiple
outdoor units
• Be sure to use the sub-breaker.
• Select the main breaker capacity greater than the total of the capacity of the sub-
breaker.
Main-breaker ≥ Total of sub-breaker
(Refer to the table in item (1) for the sub breaker capacity)
• Crossover wiring of power supply cable is prohibited.
In case of connected 3 outdoor unit
Breaker 1: Ground Fault Equipment Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker (MAX. CKT. BKR)
GOOD
[Sub breaker]
Breaker 1
Breaker 1
Breaker 2
Breaker 2
Outdoor unit power
supply cable
[Main breaker]
Breaker 1
Breaker 2
Crossover wiring of power supply
cable is PROHIBITED.
Installing a set of breaker with one
line for multiple outdoor unit is
PROHIBITED.
PROHIBITED
7.5. Transmission line
CAUTION
Caution when wiring cable:
When stripping off the coating of lead wire, always use the exclusive tool such as a
wire stripper. If there is no exclusive tool available necessarily, carefully strip the coat-
ing by a cutter etc. so that the conductive wire is not damaged.
If it is damaged, it may lead to an open circuit and a communication error.
Pay attention to the following points while attaching wires on the terminal block.
• Do not attach 2 wires on one side.
• Do not twist wires.
• Do not cross the wires.
• Do not shorted at edge at root.
GOOD PROHIBITED
1 wire 2 pcs at one side Wires twisted
2 wires Shorted at edge Shorted at root
9378945722-05_IM_L3.indb 179378945722-05_IM_L3.indb 17 2023/3/24 9:23:492023/3/24 9:23:49
To Next Page
Loading...
