Fujitsu AOUA72ULBV5 - Wiring Method

En-16
CAUTION
The primary power supply capacity is for the air conditioner itself, and does not include the
concurrent use of other devices.
Connect the power cables in positive phase sequence. Wrong wiring will lead to parts
damage.
Do not use crossover power supply wiring for the outdoor unit.
If the electrical power is inadequate, contact your electric power company.
Install a breaker (Included with earth leakage circuit breaker) in a location that is not
exposed to high temperatures.
If the temperature surrounding the breaker is too high, the amperage at which the
breaker cuts out may decrease.
Use a breaker (Included with earth leakage circuit breaker) that is capable of handling
high frequencies. Because the outdoor unit is inverter controlled, a high-frequency
breaker is necessary to prevent a malfunction of the breaker itself.
When the electrical switchboard is installed outdoors, place it under lock and key so that
it is not easily accessible.
Never bundle the power supply cable and transmission cable, remote control cable
together. Separate these cables by 50 mm or more. Bundling these cables together will
cause miss operation or breakdown.
Always keep to the maximum length of the transmission cable. Exceeding the maximum
length may lead to erroneous operation.
The static electricity that is charged to the human body can damage the main PC board
when handling the main PC board for address setting, etc.
Please keep caution to the following points.
Provide the grounding (earthing) of Indoor unit, outdoor unit and option equipment.
Cut off the power supply (breaker).
Touch the metal section (such as the unpainted control box section) of the indoor or
outdoor unit for more than 10 seconds. Discharge the static electricity in your body.
Never touch the component terminal or pattern on the PC board.
7.2. Wiring method
The wiring example for outdoor units and indoor units is shown in the figure.
Connection diagram example for Heat Pump system
AOUA72/96/120/144/168/192ULBV5: 208/230 V, 3 ~, 60 Hz
AOUA72/96/120/144/168/192ULCV5: 460 V, 3 ~, 60 Hz
208/230 V ~ 60 Hz 208/230 V ~ 60 Hz 208/230 V ~ 60 Hz
T
T
TT T
TT
P
P
PP
RC
PRC P RC
(*1) (*1) (*1)
Power supply
Power supply Power supply Power supply
Outdoor unit 1
(Primary unit)
Outdoor unit 2
(
Subordinate unit 1 )
Outdoor unit 3
( Subordinate unit 2 )
Breaker 1 Breaker 1 Breaker 1
Breaker 2 Breaker 2 Breaker 2
Breaker 1 Breaker 1 Breaker 1
Breaker 2 Breaker 2 Breaker 2
Indoor
unit
Indoor
unit
Indoor
unit
Remote
controller
(2-wire)
Remote
controller
(2-wire)
Remote
controller
(3-wire)
Breaker 1: Ground Fault Equipment
Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker
(MAX. CKT. BKR)
P: Power supply terminal
T: Transmission terminal
RC: Remote control terminal
To other refrigerant circuit
outdoor unit
*1: The number of power supply terminals is different depending on the indoor unit
model. For the wiring, refer to the indoor unit installation manual.
• There are two types of remote controller: the 2-wire type and the 3-wire type. For details,
see the relevant remote controller installation manual. (When connecting the 2-wire type
remote controller, Y3 is not used.)
Connection diagram example for heat recovery system
208/230 V ~ 60 Hz 208/230 V ~ 60 Hz
(*1)
(*1)
AOUA72/96/120/144/168/192ULBV5: 208/230 V, 3 ~, 60 Hz
AOUA72/96/120/144/168/192ULCV5: 460 V, 3 ~, 60 Hz
208/230 V ~ 60 Hz 208/230 V ~ 60 Hz208/230 V ~ 60 Hz
T
T
TT
T
TTT
T
P
PP P
RC
P
RC
PRC PRC PRC
(*1)
(*1)
P
(*1)
208/230 V ~ 60 Hz
208/230 V ~ 60 Hz
P
Power supply
Power supply Power supply
Power supply Power supply
Power supplyPower supply
Power supply
Outdoor unit 1
(Primary unit)
Outdoor unit 2
(
Subordinate unit 1 )
Refrigerant piping
(Cooling only)
Outdoor unit 3
( Subordinate unit 2 )
Breaker 1 Breaker 1 Breaker 1
Breaker 2 Breaker 2 Breaker 2
Breaker 1
Breaker 1
Breaker 2
Breaker 2
Breaker 1 Breaker 1 Breaker 1
Breaker 2 Breaker 2 Breaker 2
Indoor
unit
RB unit RB unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Breaker 1 Breaker 1
Breaker 2 Breaker 2
Remote
controller
(2-wire)
Remote
controller
(3-wire)
Remote
controller
(2-wire)
Remote
controller
(2-wire)
Remote
controller
(3-wire)
Breaker 1: Ground Fault Equipment
Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker
(MAX. CKT. BKR)
P: Power supply terminal
T: Transmission terminal
RC: Remote control terminal
To other refrigerant circuit
outdoor unit
*2: The number of power supply terminals is different depending on the indoor unit
model. For the wiring, refer to the indoor unit installation manual.
• There are two types of remote controller: the 2-wire type and the 3-wire type. For details,
see the relevant remote controller installation manual. (When connecting the 2-wire type
remote controller, Y3 is not used.)
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