Installation guide

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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 unit must be installed by qualied personnel with a capacity certicate for han-

dling refrigerant uids. Refer to regulation and laws in use on installation place.

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

installed alone or be installed with a device not authorized 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).

• This product is not explosion proof, and therefore should not be installed in an explo-

sive 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 touch the aluminum ns of heat exchanger built-in the indoor or outdoor unit to

avoid personal injury when you install or maintain the unit.

• 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.

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 refriger-

ant 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 pre-

vent 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.

2. ABOUT THIS PRODUCT

2.1. Special tools for R410A

Tool name Contents of change

Gauge manifold

Pressure is high and cannot be measured with a conven-

tional (R22) gauge. To prevent erroneous mixing of other

refrigerants, the diameter of each port has been changed.

It is recommended the gauge with seals -0.1 to 5.3 MPa

(-1 to 53 bar) for high pressure.

-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.

Charge hose

To increase pressure resistance, the hose material and base

size were changed.

Vacuum pump

A conventional vacuum pump can be used by installing a

vacuum pump adapter.

Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.

Copper pipes

It is necessary to use seamless copper pipes and it is desirable that the amount of residual

oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or

discolored portion (especially on the interior surface). Otherwise, the expansion value or

capillary tube may become blocked with contaminants.

As an air conditioner using R410A incurs pressure higher than when using R22, it is neces-

sary to choose adequate materials.

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

6. INSTALLATION WORK ..................................................................... 3

7. ELECTRICAL WIRING ..................................................................... 5

8. FINISHING ........................................................................................ 6

9. REMOVING AND REPLACING PARTS ............................................ 6

10. TEST RUN ......................................................................................... 7

11. REMOTE CONTROLLER INSTALLATION ........................................ 7

12. FUNCTION SETTING........................................................................ 7

13. OPTIONAL KIT INSTALLATION ........................................................ 9

14. SPECIAL INSTALLATION METHODS ............................................. 10

15. CUSTOMER GUIDANCE ................................................................ 10

16. ERROR CODES .............................................................................. 10

PART No. 9387603033

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.

• 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.

For authorized service personnel only.

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Summary of content (12 pages)

PAGE 1
AIR CONDITIONER Wall Mounted Type INSTALLATION MANUAL PART No. 9387603033 For authorized service personnel only. CAUTION Contents 1. SAFETY PRECAUTIONS................................................................... 1 2. ABOUT THIS PRODUCT................................................................... 1 3. GENERAL SPECIFICATION.............................................................. 2 4. ELECTRICAL REQUIREMENT.......................................................... 2 5.
PAGE 2
3. GENERAL SPECIFICATION WARNING Do not use the existing (for R22) piping and flare nuts. If the existing materials are used, the pressure inside the refrigerant cycle will rise and cause failure, injury, etc. (Use the special R410A materials.) When installing and relocating the air conditioner, do not mix gases other than the specified refrigerant (R410A) to enter the refrigerant cycle.
PAGE 3
To lay the pipe out at the right, bottom, left bottom, or left outlet, remove the piping cut-out. 6. INSTALLATION WORK ■■ For right and left piping layout • P repare the cut-out area with a utility knife and remove it using a nipper. WARNING During transportation or relocation of the indoor unit, pipes shall be covered with the wall hook bracket for protection. Do not move the appliance by holding the indoor unit pipes.
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• For left piping, left bottom piping and left rear piping, align the marks on the wall hook bracket and shape the connection pipe. • Bend the connection piping at a bend radius of 70 mm or more and install no more than 35 mm from the wall Connection pipe small Removing the drain hose Installing the drain hose Remove the screw at the left of drain hose and pull out drain hose.
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Pipe outside diameter [mm (in.)] 6.35 (1/4) 9.52 (3/8) 12.70 (1/2) 15.88 (5/8) 19.05 (3/4) Dimension A [mm] Flare tool for R410A, clutch type Dimension B [mm] 0 to 0.5 9.1 13.2 16.6 19.7 24.0 When using conventional flare tools to flare R410A pipes, the dimension A should be approximately 0.5 mm more than indicated in the table (for flaring with R410A flare tools) to achieve the specified flaring. Use a thickness gauge to measure the dimension A. Width across flats Pipe outside diameter [mm (in.
PAGE 6
7.3. How to connect wiring to the terminals PROHIBITED GOOD Caution when wiring cable Drain hose To strip off the insulation of a lead wire, always use a special tool such as a wire stripper. If there is no special tool, carefully strip off the insulation by using a knife or other utensil. Saddle (1) Use ring terminals with insulating sleeves as shown in the figure to connect to the terminal block.
PAGE 7
11. REMOTE CONTROLLER INSTALLATION Screws (4 places) Check that the indoor unit correctly receives the signal from the remote controller, then install the remote controller holder. CAUTION Screw covers Markings (triangle) Markings (triangle) Under covers Markings (triangle) Do not install the remote controller holder in the following conditions: • Any places exposed in direct sunlight • Positions affected by the heat from a stove or heater 11.1.
PAGE 8
Selecting the Function Number and Setting Value (1) While pressing the [POWERFUL] and [TEMP. ( to enter the Function Setting mode. Room temperature control for wired remote controller sensor )] simultaneously, press the [RESET] (2) Press the [ECONOMY]. (3) Press the [TEMP. ( / )] to select the function number. (Press the [ECONOMY] to switch between the left and right digits.) Function Number Setting Value (4) Press the [POWERFUL] to proceed to setting value.
PAGE 9
Room temperature sensor switching (Aux.) To use the temperature sensor on the wired remote controller only, change the setting to “Wired remote controller” (01). This function will only work if the function setting 42 is set at “Both” (01). (♦... Factory setting) Function Number Setting Value 48 Setting Description 00 Both 01 Wired remote controller 13.2. Installing the External input/output PCB (1) Remove the Intake grille, front panel, and control cover. Refer to “9.
PAGE 10
16. ERROR CODES 14. SPECIAL INSTALLATION METHODS Group control system A number of indoor units can be operated at the same time using a single remote controller. *When different types of indoor units (such as wall mounted type and cassette type, cassette type and duct type, or other combinations) are connected using group control system, some functions may no longer be available. (1) Connect up to 16 indoor units in a system. I.U. I.U. B A C I.U. D I.U. E A, B, C, D, E : Remote controller cable.
PAGE 11
[Troubleshooting with the indoor unit display] Error display OPERATION TIMER lamp lamp (green) (orange) ECONOMY lamp (green) Error code Description Indoor unit fan motor 3 error (Right side fan) ●(5) ●(10) (5) (15) (6) (1) Outdoor unit reverse/missing phase and wiring error (6) (2) Outdoor unit main PCB model information error or communication error Indoor unit error Inverter error (6) (3) (6) (4) (6) (5) (6) (8) Outdoor unit rush current limiting resister temp.
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