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6. ELECTRICAL WIRING
6. 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 of 1-phase, 2-cable. Use a voltage
within the range of 198-264V.
Before connecting the cables, make sure the power supply is OFF.
Select a breaker (Included with earth leakage circuit breaker) of appropriate capacity
and install one at every power supply of an outdoor unit. Wrong selection of breakers
or transition wiring will lead to electric shock and fi re.
Do not connect AC power supply to the transmission line terminal board.
Improper wiring can damage the entire system.
Install a breaker (Included with earth leakage circuit breaker) in accordance with the
related laws and regulations.
Connect the connector cord securely to the terminal.
Faulty installation can cause a fi re.
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 elec-
tric parts for 10 minutes due to the risk of electric shock.
Make sure to perform grounding work. Improper grounding work can cause electric
shocks.
Always use a separate power supply line protected by a circuit breaker operating on
all cables with a distance between contact of 3mm for this unit.
Do not modify power cable, use extension cable or branch wiring. Improper use may
cause electric shock or fi re by poor connection, insuffi cient insulation or over current.
Use crimp-type terminals and tighten the terminal screws to the specifi ed torques,
otherwise, abnormal overheating may be produced and possibly cause serious dam-
age inside the unit.
Securely install the electrical box cover on the unit. An improperly installed service
panel can cause serious accidents such as electric shock or fi re through exposure to
dust or water.
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 (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
earth leakage circuit 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 cable 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 maxi-
mum 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.
En-9
WARNING
CAUTION
6. 2.
Knockout hole
Be careful not to deform or scratch the panel while opening the knockout holes.
After opening the knockout hole, remove the burr on the edges to prevent snapping of
cables.
It is recommended to apply rust proof paint on the edges to prevent rust.
Knockout holes are provided for wiring. (Fig. A)
Knockout holes are provided 2 each in the same size in front, lateral and rear sides. (Fig. B)
Fig. A
Service panel
Fig. B
Front connection
Lateral connection
CAUTION
Rear connection
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