General ASH12LA, ASH12LSACW, AOH12LSAC, ASH9LA, ASH9LSACW Installation Manual

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SPLIT TYPE ROOM AIR CONDITIONER

INSTALLATION MANUAL

(PART NO. 9312557011-01)

This air conditioner uses new refrigerant HFC (R410A).

The basic installation work procedures are the same as conventional refrigerant (R22) models.

However, pay careful attention to the following points:

(1) 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 flare nuts with the R410A piping and flare nuts.

(2) 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 threads per inch.]

(3) 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.

(4) 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 side whose composition is stable.

Special tools for R410A

Tool name

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous

Gauge manifold

Charge hose

Vacuum pump

Gas leakage detector

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/10m. 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 necessary to choose adequate materials. Thicknesses of copper pipes used with R410A are as shown in Table1.Never us copper pipes thinner than 0.8mm even when it is available on the market.

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. To increase pressure resistance, the hose material and base size were changed. A conventional vacuum pump can be used by installing a vacuum pump adapter. Special gas leakage detector for HFC refrigerant R410A.

Contents of change

Table 1 Thicknesses of Annealed Copper Pipes

Nominal

diameter

1/4

3/8

Outer diameter

(mm)

6.35

9.52

Thickness (mm)

R410A

0.80

[ref.] R22

0.80

WARNING

(1) 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 breakage, injury, etc.(Use the special R410A materials.)

(2) When installing and relocating the air conditioner, do not mix gases other than the specified refrigerant(R410A)

to enter the refrigerant cycle.

• If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an abnormally high value and cause breakage, injury, etc.

SELECTING THE MOUNTING

INSTALLATION DIAGRAM OF

POSITION

Decide the mounting position with the customer as follows:

1. INDOOR UNIT

(1) Install the indoor unit level on a strong wall which is not subject to

vibration.

(2) The inlet and outlet ports should not be obstructed : the air should

be able to blow all over the room. (3) Install the unit near an electric outlet or special branch circuit. (4) Do not install the unit where it will be exposed to direct sunlight. (5) Install the unit where connection to the outdoor unit is easy. (6) Install the unit where the drain pipe can be easily installed. (7) Take servicing, etc. into consideration and leave the spaces shown

in (Fig. 2). Also install the unit where the filter can be removed.

2. OUTDOOR UNIT

(1) If possible, do not install the unit where it will be exposed to direct

sunlight. (If necessary, install a blind that does not interfere with

the air flow.) (2) Do not install the unit where a strong wind blows or where it is very

dusty. (3) Do not install the unit where people pass. (4) Take you neighbors into consideration so that they are not disturbed

by air blowing into their windows or by noise. (5) Provide the space shown in Fig. 2 so that the air flow is not blocked.

Also for efficient operation, leave open three of the four directions

front, rear, and both sides.

INDOOR AND OUTDOOR UNITS

Fig. 2

[INDOOR UNIT]

6 cm or over

150 cm or over

5 cm or over

230 cm or over

Remote

control unit

Wall hook bracket

9 cm or over

Wall cap

WARNING

Install at a place that can withstand the weight of the indoor and outdoor units and install positively so that the units will not topple or fall.

CAUTION

(1) Do not install where there is the danger of com-

bustible gas leakage. (2) Do not install near heat sources. (3) If children under 10 years old may approach the

unit, take preventive measures so that they can-

not reach the unit. (4) Install the indoor unit on the wall where the height

from the floors more than 230 cm.

[Indoor unit piping direction]

The piping can be connected in the five directions indicated by 1, 2, 3, 4, and 5 in (Fig. 1). When the piping is connected in

direction 2 or 5, cut along the piping groove in the side of the front cover with a hacksaw. When connecting the piping in direction 3, cut a notch in the thin wall at the front bottom of the front cover.

Connection Cord

Conform to Type245 IEC57

[OUTDOOR UNIT]

60 cm or over

10 cm or over

60 cm or over

5 cm or over

25 cm or over

Outdoor unit bottom

Fig. 1

2 Right

outlet

1 Rear outlet

3 Bottom outlet

(Rear)

4 Left rear

outlet

5 Left

outlet

Fig. 3

Drain hose

50 cm

26.5 cm

For authorized service personnel only.

WARNING

(1) For the room air conditioner to operate satisfactory, install it as outlined in this installation manual. (2) Connect the indoor unit and outdoor unit with the air conditioner piping and cords available standards parts. This

installation manual describes the correct connections using the standard accessories and the parts specified in

this installation manual. (3) Have installation work done by authorized service personnel only. (4) Never cut the power cord, lengthen or shorten the cord, or change the plug. (5) Also do not use an extension cord. (6) Plug in the power cord plug firmly. If the receptacle is loose, repair it before using the room air conditioner.

(7) Do not turn on the power until all installation work is complete.

● Be careful not to scratch the air conditioner when handling it.

● After installation, explain correct operation to the customer, using the operating manual.

● Let the customer keep this installation manual because it is used when the air conditioner is serviced or

moved.

● The maximum length of the piping is 15 m. The maximum height difference of the piping is 8 m, if the units are further apart than these, correct operation can not be guaranteed.

STANDARD ACCESSORIES

The following installation accessories are supplied. Use them as required.

Name and Shape Q’ty Name and Shape Q’ty

Wall hook bracket

Remote control unit

Battery Tapping screw (big)

Drain pipe

Cloth tape

(ø4 X 20)

One set of following parts are necessary in istallation of this product.

Name

Connection pipe assembly

Connection cord

Wall pipe

Decorative tape

Vinyl tape

Wall cap

Saddle

Drain hose

Tapping screws

Sealant

ELECTRICAL REQUIREMENT

Always make the air conditioner power supply a special branch circuit and provide a special switch and receptacle. Do not extend the power cord.

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