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Safety precautions

English

Installation instruction (Safety precautions)

SAFETY PRECAUTIONS

• 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.
• Incorrect installation due to ignoring of the instruction will cause harm or damage, and the seriousness is
classi

ed by the following indications.

• The Caution Items stated here must be followed because these important contents are related to Safety.
The meaning of each indication is used as below.

Do not install the unit in a place where leakage of

ammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause

re.

Prevent liquid or vapor from entering sumps or sewers since vapor is heavier than air and may form suffocating atmospheres.
Do not release refrigerant during piping work for installation, re-installation and during repairing refrigeration parts. Take care of the liquid refrigerant, it may cause
frostbite.
Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
Do not touch the sharp aluminium

n, sharp parts may cause injury.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.
Select an installation location which is easy for maintenance. Incorrect installation, service or repair of this air conditioner may increase the risk of rupture and this may
result in loss damage or injury and/or property.
Power supply connection to the room air conditioner.
Use power supply cord 3 x 1.5 mm² (1.5 ~ 2.0HP), 3 x 2.5 mm² (2.5HP) type designation ISO 694 or 60245 IEC 57 or heavier cord.
Connect the power supply cord of the air conditioner to the mains using one of the following method.
Power supply point should be in easily accessible place for power disconnection in case of emergency.
In some countries, permanent connection of this air conditioner to the power supply is prohibited.

Installation work. It may need two people to carry out the installation work.
Keep any required ventilation openings clear of obstruction.

1) Power supply connection to the receptacle using power plug.
Use an approved 15/16A (1.0 ~ 1.5HP) or 16A (2.0HP) or 20A (2.5HP) 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 (1.0 ~ 2.0HP) or 20A (2.5HP) circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm contact gap.

•

CAUTION

•

Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit on veranda of a high rise building, child may climb up to outdoor unit and cross
over the handrail causing an accident.
Do not insert your

ngers or other objects into the unit, high speed rotating fan may cause injury.

Do not sit or step on the unit, you may fall down accidentally.
Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.
When installing or relocating air conditioner, do not let any substance other than the speci

ed refrigerant, eg. air etc mix

into refrigeration cycle (piping). Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.
Do not add or replace refrigerant other than speci

ed type. It may cause product damage, burst and injury etc.

Do not perform

are connection inside a building or dwelling or room, when joining the heat exchanger of indoor unit with interconnecting piping. Refrigerant

connection inside a building or dwelling or room must be made by brazing orwelding. Joint connection of indoor unit by

aring method can only be made at outdoor

or at outside of a buidling or dwelling or room. Flare connection may cause gas leak and

ammable atmospheres.

For R32/R410A model, use piping,

are nut and tools which is speci

ed for R32/R410A refrigerant. Using of existing (R22) piping,

are nut and tools may cause

abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury. For R32 and R410A, the same

are nut on the outdoor unit

side and pipe can be used.
Since the working pressure for R32/R410A is higher than that of refrigerant R22 model, replacing conventional piping and

are nuts on the outdoor unit side are

recommended.
If reuse piping is unavoidable, refer to instruction “IN CASE OF REUSING EXISTING REFRIGERANT PIPING”
Thickness of copper pipes used with R32/R410A must be more than 0.6 mm. Never use copper pipes thinner than 0.5 mm.
It is desirable that the amount of residual oil less than 40 mg/10 m.
Engage authorized dealer or specialist for installation. If installation done by the user is incorrect, it will cause water leakage, electrical shock or

re.

For refrigeration system work, install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or

re.

Use the attached accessories parts and speci

ed parts for installation. Otherwise, it will cause the set to fall, water leakage,

re or electrical shock.

Install at a strong and

rm location which is able to withstand weight of the set. If the strength is not enough or installation is not properly done, the set will drop and

cause injury.
For electrical work, follow the national regulation, legislation and this installation instructions. An independent circuit and single outlet must be used. If electrical circuit
capacity is not enough or defect found in the electrical work, it will cause electrical shock or

re.

Do not use joint cable for indoor / outdoor connection cable. Use the speci

ed indoor/outdoor connection cable, refer to instruction

CONNECT THE CABLE TO

THE INDOOR UNIT

and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will have impact on the terminal. If connection or

xing is not perfect, it will cause heat up or

re at the connection.

Wire routing must be properly arranged so that control board cover is

xed properly. If control board cover is not

xed perfectly, it will cause

re or electrical shock.

This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD), with sensitivity of 30mA at
0.1 sec or less. Otherwise, it may cause electrical shock and

re in case of equipment breakdown or insulation breakdown.

During installation, install the refrigerant piping properly before running the compressor. Operation of compressor without

xing refrigeration piping and valves at

opened position will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.
During pump down operation, stop the compressor before removing the refrigeration piping. Removal of refrigeration piping while compressor is operating and valves
are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.
Tighten the

are nut with torque wrench according to speci

ed method. If the

are nut is over-tightened, after a long period, the

are may break and cause refrigerant

gas leakage.
After completion of installation, con

rm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with

re.

Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with

re.

Be aware that refrigerants may not contain an odour.

WARNING