Electrical Wiring; The Precautions Of Electrical Wiring; Electrical Requirement - Fujitsu aoyg18lac2 Installation Manual

(1) Detach the caps and plugs from the pipes.
(2) Center the pipe against the port on the outdoor unit, and then turn the fl are nut by hand.
To prevent gas leakage, coat the fl are
surface with alkylbenzene oil (HAB).
Do not use mineral oil.
(3) Attach the connection
pipe.
2-way valve (Liquid)
3-way valve (Gas)
Flare nut
Flare nut
(4) When the fl are nut is
tightened properly by your
hand, use a torque wrench
to fi nally tighten it.
Hold the torque wrench at its grip, keeping it in a right angle with the pipe, in order to
tighten the fl are nut correctly.
• Outer panel may be distorted if fastened only with a wrench. Be sure to fi x the elementary
part with a holding wrench (spanner) and fasten with a torque wrench (refer to below
diagram). Do not apply force to the blank cap of the valve or hang a wrench, etc., on the
cap. If blank cap is broken, it may cause leakage of refrigerant.
Flare nut [mm (in.)]
6.35 (1/4) dia.
9.52 (3/8) dia.
12.70 (1/2) dia.
15.88 (5/8) dia.
19.05 (3/4) dia.
4. 1. 3. How to use adapter (Connection ports of outdoor unit)
• When using the ADAPTER, be careful not to overtighten the nut, or the smaller pipe may
be damaged.
• Apply a coat of refrigeration oil to the threaded connection port of the outdoor unit where
the fl are nut comes in.
• Use appropriate wrenches to avoid damaging the connection thread by overtightening the
fl are nut.
• Apply wrenches on both of fl are nut (local part), and ADAPTER to tighten them.
Adapter type [mm]
ø9.52 → ø12.7
5.

ELECTRICAL WIRING

5. 1.

The precautions of electrical wiring

Wiring connections must be performed by a qualifi ed person in accordance with
specifi cations.
The rated supply of this product is 50Hz, 230V. Use a voltage within the range of
198-264V.
Before connecting the wires, make sure the power supply is OFF.
Connection pipe
(Liquid)
UNIT B
UNIT A
Connection pipe (Gas)
Holding spanner
Body side
Torque wrench
CAUTION
Tightening torque [N·m (kgf·cm)]
16 to 18 (160 to 180)
32 to 42 (320 to 420)
49 to 61 (490 to 610)
63 to 75 (630 to 750)
90 to 110 (900 to 1100)
Tightening torque [N·m (kgf·cm)]
32 to 42 (320 to 420)
WARNING
Be sure to install a breaker of the specifi ed 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 fi re.
Be sure to install an earth leakage breaker. Otherwise, it will cause electric shock or
fi re.
Do not connect AC power supply to the transmission line terminal board.
Improper wiring can damage the entire system.
Connect the connector cable securely to the terminal.
Faulty installation can cause a fi re.
Make sure to secure the insulation portion of the connector cable with the cable 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 5 minutes due to the risk of electric shock.
Make sure to perform grounding work. Improper grounding work can cause electric
shocks.
The primary power supply capacity is for the air conditioner itself, and does not include
the concurrent use of other devices.
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 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.
This system uses an inverter which means that it must be used an earth leakage
breaker that can handle harmonics in order to prevent malfunctioning of the earth
leakage breaker itself.
When the electrical switchboard is installed outdoors, place it under lock and key so
that it is not easily accessible.
Do not fasten the power supply cable and connection cable together.
Always keep to the maximum length of the connection cable. Exceeding the maximum
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 grounding 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.
5. 2.

Electrical requirement

Be sure to install a breaker of the specifi ed capacity.
Regulation of cables and breaker differs from each locality, refer in accordance with
local rules.
Voltage rating
Operating range
Cable size
Cable
*1
2
(mm )
Power supply cable 2.5
Connection cable 1.5
*1
Selected sample: Select the correct cable type and size according to the country or
region's regulations.
Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the
wire diameter when the wire length is long.
Breaker
Circuit breaker (over current)
Earth leakage breaker
*2
Select the appropriate breaker of the described specifi cation according to the national
or regional standards.
*3
Select the breaker that enough load current can pass through it.
• Before starting work check that power is not being supplied to all poles of the indoor unit
and outdoor unit.
• Install all electrical works in accordance to standard.
• Install the disconnect device with a contact gap of at least 3mm in all poles nearby the
units. (Both indoor unit and outdoor unit)
• Wiring size must comply with the applicable local and national code.
WARNING
CAUTION
CAUTION
1Φ 230V (50Hz)
198-264V
Type Remarks
2 cable + Earth (Ground),
Type 60245 IEC 57
1 Ø 230V
3 cable + Earth (Ground),
Type 60245 IEC 57
1 Ø 230V
*2
Specifi cation
Current : 15 (A)
Leakage current : 30mA 0.1sec or less
*3
En-6