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6. ELECTRICAL WIRING
6.1. The precautions of electrical wiring
WARNING
Wiring connections must be performed by a qualified person in accordance with speci-
fications.
Power source (V) 380-415 (50 Hz) 400 (60 Hz)
Available voltage range (V) 342-456 (50 Hz) 342-440 (60 Hz)
Make sure to perform grounding work. Improper grounding work can cause electric
shocks.
Before connecting the cables, make sure the power supply is OFF.
Be sure to install a ground leakage breaker. Otherwise, it will cause electric shock or
fire.
Be sure to install a breaker of the specified capacity. When selecting breaker, please
comply with the laws and the regulations of each country. One breaker must be installed
on the power supply of the outdoor unit. Wrong selection and setup of the breaker will
cause electric shock or fire.
Do not connect AC power supply to the transmission line terminal board.
Improper wiring can damage the entire system.
Connect the connector cord securely to the terminal.
Faulty installation can cause a fire.
Donotmodifypowercable,useextensioncableorbranchwiring.Improperusemay
cause electric shock or fire by poor connection, insufficient electrical insulation or over
current.
Make sure to secure the insulation portion of the connector cable with the cord clamp. A
damaged insulation can cause a short circuit.
Never install a power factor improvement condenser. Instead of improving the power factor,
the condenser may overheat.
Before servicing the unit, turn the power supply switch off. Then, do not touch electric
parts for 10 minutes due to the risk of electric shock.
Always use a separate power supply line protected by a circuit breaker operating on all
cables with a distance between contact of 3 mm for this unit.
Use Ring terminals and tighten the terminal screws to the specified torques, otherwise,
abnormal overheating may be produced and possibly cause serious damage inside the
unit.
Securelyinstalltheelectricalboxcoverontheunit.Animproperlyinstalledservicepanel
cancauseseriousaccidentssuchaselectricshockorfirethroughexposuretodustor
water.
If the supply cable is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
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. If they are connected in negative
phase sequence, an error will be displayed. If there is a missing phase connection, the
unit will not operate normally. Do not connect a N phase (neutral phase) cable to other
phases (misconnection). 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
exposedtohightemperatures.
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.
Alwayskeeptothemaximumlengthofthetransmissioncable.Exceedingthemaximum
length may lead to erroneous operation.
The static electricity that is charged to the human body can damage the control PC
board when handling the control PC board for address setting, etc.
Please keep caution to the following points.
Provide the earthing (grounding) of Indoor unit, Outdoor unit and Option equipment.
Cut off the power supply (breaker).
Touchthemetalsection(suchastheunpaintedcontrolboxsection)oftheindooror
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.
6.2. Wiring method
6.2.1 Connection diagrams
Thewiringexampleforoutdoorunitsandindoorunitsisshowninthefigure.
(*1) (*1) (*1)
(*2) (*2) (*2)
Power supply
3N~ 380-415V
50/60Hz
Power supply
3N~ 380-415V
50/60Hz
Power supply
3N~ 380-415V
50/60Hz
Power supply
3N~ 380-415V
50/60Hz
Outdoor unit 1
(Primary)
Power supply Power supply Power supplyPower supply
Indoor unitIndoor unitIndoor unit
Transmission Transmission Transmission
Transmission
Transmission Transmission Transmission
Outdoor unit 2
(Subordinate 1)
Outdoor unit 3
(Subordinate 2)
Outdoor unit 4
(Subordinate 3)
Breaker Breaker
Breaker Breaker
Power supply Power supply Power supply
Remote control
Remote control
Remote control
Power supply
230V ~ 50Hz
Power supply
230V ~ 50Hz
Power supply
230V ~ 50Hz
Remote
controller
(2-wire)
Remote
controller
(2-wire)
Remote
controller
(3-wire)
To other refrigerant
circuit outdoor unit
Breaker Breaker Breaker
*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.
*2: Earth (Ground) the remote controller if it has an earth (ground) cable.
• 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.)
6.3. Opening for wiring
CAUTION
Seal the wiring route hole with putty (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
electricalcomponentbox.
Be careful not to deform or scratch the panel while opening the knockouts.
After opening the knockouts, remove burr on the edges, and attach the conduit or grom-
met edging (accessories) to prevent damaging the cables.
It is recommended to apply rust proof paint on the edges to prevent rust.
Ø 34.5
Ø 50
Ø 43.7
Ø 22.2
(Unit: mm)
9378945746-02_IM_En_240404_2.indd 129378945746-02_IM_En_240404_2.indd 12 2024/04/04 16:26:052024/04/04 16:26:05
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Productinformatie
| Merk | Fujitsu |
| Model | AJG090JATAH |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 5576 MB |
