En-18
ELECTRICAL WIRING
6.
The precautions of electrical wiring
6. 1.
WARNING
Wiring connections must be performed by a quali
fi
ed person in accordance with speci
fi
cations.
•
The rated supply of this product is 50Hz, 400V of 3-phase, 4-wire. Use a voltage within the range of 342-456V.
Before connecting the wires, make sure the power supply is OFF.
•
Select a breaker (earth leakage breaker) of appropriate capacity and install one at every power supply of an outdoor
•
unit. Wrong selection of breakers (earth leakage 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 (earth leakage breaker) in accordance with the related laws and regulations.
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Connect the connector cord securely to the terminal.
•
Faulty installation can cause a
fi
re.
Do not modify power cable, use extension cable or branch wiring. Improper use may cause electric shock or
fi
re
•
by poor connection, insuf
fi
cient 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.
Make sure to perform grounding work. Improper grounding work can cause electric shocks.
•
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.
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Install a breaker (earth leakage breaker) in a location that is not exposed to high temperatures.
•
If the temperature surrounding the breaker (earth leakage breaker) is too high, the amperage at which the breaker
(earth leakage breaker) cuts out may decrease.
Use a breaker (earth leakage breaker) that is capable of handling high frequencies. Because the outdoor unit is
•
inverter controlled, a high-frequency earth leakage 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.
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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 maximum length may lead to er-
•
roneous 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.
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2011-9-20 16:25:54
2011-9-20 16:25:54
