Safety Precautions
• The precautions described herein are classified as WARNING and CAUTION. They both contain important
information regarding safety. Be sure to observe all precautions without fail.
• Meaning of WARNING and CAUTION notices
� WARNING Failure to follow these instructions properly may result in personal injury or loss of life.
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CAUTION
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Failure to follow these instructions properly may result in property damage or personal injury, which may be serious depending on the circumstances.
• The safety marks shown in this manual have the following meanings:
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Be sure to follow the instructions.
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Be sure to establish an earth connection,
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Never attempt.
• After completing installation, conduct a trial operation to check for faults and explain to the user how to
operate the air conditioner and take care of it with the aid of the operation manual.
� WARNING
• Ask your dealer or qualified personnel to carry out installation work.
Do not attempt to install the air conditioner yourself. Improper installation may result in water leakage, electric shock or fire.
• Install the air conditioner in accordance with the instructions in this installation manual. Improper installation may result in water leakage, electric shock or fire.
• Be sure to use only the specified accessories and parts for installation work. Failure to use the specified parts may result in the unit falling, water leakage, electric shock or fire.
• Install the air conditioner on a foundation strong enough to hold the weight of the unit. A foundation of insufficient strength may result in the equipment lalluig and causing injury.
• Electrical work must be pertormed in accordance with relevant local and national regulations and with the instructions in this installation manual.
Be sure to use a dedicated power supply circuit only. Insufficient power supply and improper workmanship may result in electric shock or fire.
• Use a cable of suitable length. Do not use tapped wires or an extension lead, as this may cause overheating, electric shock or fire.
• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the terminal
connections or wires. Improper connections or securing of wires may result in abnormal heat build-up or fire.
• When wiring the power supply and connecting the wiring between the indoor and outdoor units, position the wires so that the electrical
wiring box cover can be securely fastened. Improper positioning of the electrical wiring box cover may result in electric shock, fire or overheating terminals.
• If refrigerant gas leaks during installation, ventilate the area immediately.
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Toxic gas may be produced if the refrigerant comes into contact with fire.
• After completing installation, check for refrigerant gas leakage. Toxic gas may be produced if the refrigerant gas
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leaks into the room and comes into contact with a source of fire, such as a fan heater, stove or cooker.
• When installing or relocating the air conditioner, do not let any other substances besides R32, such as air, enter the refrigerant circuit.
The presence of air or foreign matter in the refrigerant circuit causes an abnormal pressure rise, which may result in equipment damage and even injury.
• During installation, attach the refrigerant piping securely before operating the compressor. If the refrigerant pipes are not attached and the stop
valve is open when the compressor is operated, air will be sucked in, causing abnormal pressure in the refrigeration cycle, which may result in equipment damage and even injury.
• During pump down, stop the compressor before removing the refrigerant piping. If the compressor is still operating and the stop valve is open during pump down,
air will be sucked in when the refrigerant piping is removed, causing abnormal pressure in the refrigeration cycle, which may result in equipment damage and even injury.
• Be sure to earth the air conditioner.
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Do not earth the unit to a utility pipe, lightning conductor or telephone earth lead. lmperiect earthing may result in electric shock.
• Be sure to install an earth leakage circuit breaker. Failure to install an earth leakage circuit breaker may result in electric shock or fire.
• Do not pump down when the refrigerant has leaked, otherwise the compressor may be damaged.
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� CAUTION
• Do not install the air conditioner at any place where there is a danger of flammable gas leakage.
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In the event of a gas leakage, build-up of gas near the air conditioner may cause a fire to break out.
• While following the instructions in this installation manual, install drain piping to ensure proper drainage and insulate
the piping to prevent condensation. Improper drain piping may result in indoor water leakage and property damage.
• Tighten the flare nut as specified, such as with a torque wrench. If the flare nut is too tight, it may crack after prolonged use, causing refrigerant leakage.
• Take adequate steps to prevent the outdoor unit being used as a shelter by small animals.
If small animals or birds come into contact with electrical parts, this can cause malfunctions, smoke or fire. Please instruct the customer to always keep the area around the unit clean.
• The refrigerant circuit temperature will be high, therefore the inter-unit wire must be kept away from copper pipes that are not thermally insulated.
