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12 Installation Instruction

12.1. INDOOR UNIT

Required tools for Installation Works

SAFETY PRECAUTIONS

WARNING

This indication shows the possibility of causing death or serious injury.

CAUTION

This indication shows the possibility of causing injury or damage to properties only.

The items to be followed are classified by the symbols:

Symbol with background white denotes item that is PROHIBITED from doing.

WARNING

1) Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or fire.

2) Install according to this installation instruction strictly. If installation is defective, it will cause water leakage, electrical shock or fire.

3) Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

4) Install at a strong and firm location which is able to withstand the set's weight. If the strength is not enough or installation is not properly done, the set

will drop and cause injury.

5) For electrical work, follow the local national wiring standard, regulation and this installation instruction. An independent circuit and single outlet must be

used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

6) Use the specified cable (1.5 mm

) and connect tightly for indoor/outdoor connection. Connect tightly and clamp the cable so that no external force will

be acted on the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at the connection.

7) Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up at

connection point of terminal, fire or electrical shock.

8) When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration

cycle.

Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosion and injury.

9) When connecting the piping, do not allow air or any substances other than the specified refrigerant (R410A) to enter the refrigeration

cycle. Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and possibly result in

explosion and injury.

10) • When connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause abnormally high

pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials.

• Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.

• It is desirable that the amount of residual oil is less than 40 mg/10 m.

11) Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with other electrical

appliances. Otherwise, it will cause fire or electrical shock.

CAUTION

1) This equipment must be earthed. It may cause electrical shock if grounding is not perfect.

2) Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding

of the unit, it may cause fire.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

ATTENTION

1) Selection of the installation location.

Select a installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

2) Power supply connection to the room air conditioner.

Connect the power supply cord of the room air conditioner to the mains using one of the following method.

Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency.

In some countries, permanent connection of this room air conditioner to the power supply is prohibited.

1) Power supply connection to the receptacle using a power plug.

Use an approved 15A/16A power plug with earth pin for the connection to the socket.

2) Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A circuit breaker for the permanent connection. It

must be a double pole switch with a minimum 3 mm contact gap.

3) Do not release refrigerant.

Do not release refrigerant during piping work for installation, reinstallation and during repairing a refrigeration parts. Take care of the liquid refrigerant,

it may cause frostbite.

4) Installation work.

It may need two people to carry out the installation work.

5) Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

•

Read the following “SAFETY PRECAUTIONS” carefully before installation.

•

Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed.

•

The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as

below.Incorrect installation due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

• Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and

maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

1. Philips screw driver

2. Level gauge

3. Electric drill, hole core drill

(ø70 mm)

4. Hexagonal wrench (4 mm)

5. Spanner

6. Pipe cutter

7. Reamer

8. Knife

9. Gas leak detector