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1. SAFETY PRECAUTIONS

• Be sure to read this manual thoroughly before installation.
• The warnings and precautions indicated in this manual contain important information

pertaining to your safety. Be sure to observe them.

• Hand this manual, together with the operating manual, to the customer. Request the

customer to keep them on hand for future use, such as for relocating or repairing the
unit.

WARNING

Indicates a potentially or imminently hazardous situation
which, if not avoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation that may result in
minor or moderate injury or damage to property.

WARNING

• Installation of this product must be done by experienced service technicians or profes-

sional installers only in accordance with this manual. Installation by non-professional
or improper installation of the product might cause serious accidents such as injury,
water leakage, electric shock, or

re. If the product is installed in disregard of the

instructions in this manual, it will void the manufacturer’s warranty.

• Do not turn on the power until all work has been completed. Turning on the power be-

fore the work is completed can cause serious accidents such as electric shock or

re.

• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant

is exposed to a direct

ame, it may produce a toxic gas.

• Installation must be performed in accordance with regulations, codes, or standards for

electrical wiring and equipment in each country, region, or the installation place.

• Do not use means to accelerate the defrosting process or to clean, other than those

recommended by the manufacturer.

• This appliance is not intended for use by persons (including children) with reduced

physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with the appliance.

CAUTION

• Read carefully all safety information written in this manual before you install or use the

air conditioner.

• Install the product by following local codes and regulations in force at the place of

installation, and the instructions provided by the manufacturer.

• This product is part of a set constituting an air conditioner. The product must not be

installed alone or be installed with non-authorized device by the manufacturer.

• Always use a separate power supply line protected by a circuit breaker operating on all

wires with a distance between contact of 3 mm for this product.

• To protect the persons, earth (ground) the product correctly, and use the power cable

combined with an Earth Leakage Circuit Breaker (ELCB).

CAUTION

• This product is not explosion proof, and therefore should not be installed in explosive

atmosphere.

• To avoid getting an electric shock, never touch the electrical components soon after

the power supply has been turned off. After turning off the power, always wait 5 min-
utes or more before you touch the electrical components.

• This product contains no user-serviceable parts. Always consult experienced service

technicians for repairing.

• When moving or relocating the air conditioner, consult experienced service technicians

for disconnection and reinstallation of the product.

• Do not place any other electrical products or household belongings under the product.

Condensation dripping from the product might get them wet, and may cause damage
or malfunction to the property.

• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.

2. ABOUT THIS PRODUCT

2.1. Precautions for using R410A refrigerant

The basic installation work procedures are the same as conventional refrigerant (R22)
models.
However, pay careful attention to the following points:

Since the working pressure is 1.6 times higher than that of conventional refrigerant (R22)
models, some of the piping and installation and service tools are special. (See the table
below.)
Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant
R410A model, always replace the conventional piping and

are nuts with the R410A

piping and

are nuts.

Models that use refrigerant R410A have a different charging port thread diameter
to prevent erroneous charging with conventional refrigerant (R22) and for safety.
Therefore, check beforehand. [The charging port thread diameter for R410A is
1/2-20 UNF]

Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant (R22) models. Also, when storing the piping, securely seal the opening by
pinching, taping, etc.

When charging the refrigerant, take into account the slight change in the composition of
the gas and liquid phases. And always charge from the liquid phase where refrigerant
composition is stable.

AIR CONDITIONER
Wall Mounted Type

INSTALLATION MANUAL

Contents

1. SAFETY

PRECAUTIONS

.................................................................. 1

2. ABOUT

THIS

PRODUCT................................................................... 1

3. GENERAL

SPECIFICATION

............................................................. 2

4. ELECTRICAL

REQUIREMENT

......................................................... 2

5. SELECTING THE MOUNTING POSITION ....................................... 3
6. INSTALLATION

WORK

..................................................................... 3

7. ELECTRICAL WIRING ..................................................................... 5
8. FINISHING

........................................................................................ 6

9. FRONT PANEL REMOVAL AND INSTALLATION ............................. 6
10. TEST RUN

......................................................................................... 7

11.  REMOTE CONTROLLER INSTALLATION ........................................ 7
12.  OPTIONAL KIT INSTALLATION ........................................................ 7
13.  INSTALLATION WORK (option) ........................................................ 8
14.  SPECIAL INSTALLATION METHODS ............................................... 9
15.  REMOTE CONTROLLER CUSTOM CODE SETTING ................... 10
16. FUNCTION SETTING...................................................................... 10
17. CUSTOMER GUIDANCE

................................................................ 12

18. ERROR CODES

.............................................................................. 12

PART No. 9387082050-02

For authorized service personnel only.

[Original instructions]

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