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2.2. 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 
(30 inHg to 768 psi) for high pressure.
-0.1 to 3.8 MPa (30 inHg to 551 psi) 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 (0.004 oz/100 ft.). 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 nec-
essary to choose adequate materials. 

 WARNING

Do not use the existing (for R22) piping and 

fl

 are 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 
speci

fi

 ed 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 failure, injury, etc.

2.3. For authorized service personnel only.

 WARNING

For the air conditioner to operate satisfactorily, install it as outlined in this installation 
manual.

Connect the indoor unit and outdoor unit or branch box with the air conditioner piping 
and cables available from your local distributor. This installation manual describes the 
correct connections using the installation set available from your local distributor.

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

 CAUTION

This installation manual describes how to install the indoor unit only. 
To install the outdoor unit or branch box, refer to the installation manual included with 
the outdoor unit or branch box.

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

2.4. Accessories

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

Name and Shape

Q’ty

Name and Shape

Q’ty

Operating manual

1

Remote controller 

holder

1

Installation manual 

(This manual)

1

Cloth tape

1

Wall hook bracket

1

Tapping screw
(big)

5

Name and Shape

Q’ty

Name and Shape

Q’ty

Remote controller

1

Tapping screw
(small)

2

Battery

2

Air cleaning filter

2

Seal A

It is used when the diameter of 
gas pipe is Ø12.70 or more.
It is necessary when using AS15.

1

The following items are necessary to install this air conditioner. (The items are not includ-
ed with the air conditioner and must be purchased separately.)

Name Q’ty

Name Q’ty

Connection pipe assembly

1

Wall cap

1

Connection cable (4-conductor)

1

Saddle

1 set

Wall pipe

1

Drain hose

1

Decorative tape

1

Tapping screws

1 set

Vinyl tape

1

Sealant

1

2.5. Optional parts

Refer to each installation manual for the method of installing optional parts.

Parts name

Model No.

Application

Wired remote controller *

UTY-RNNUM

For air conditioner operation

Simple remote controller *

UTY-RSNUM

For air conditioner operation

External connect kit *

UTY-XWZXZ5

For control input/output port

Communication kit

UTY-TWBXF

For the installation of optional parts

* Optional communication kit is necessary for the installation.

3. GENERAL SPECIFICATION

This installation manual brie

fl

 y outlines where and how to install the air conditioning system. Please 

read over the entire set of instructions for the indoor and outdoor units and make sure all accessory 
parts listed are with the system before beginning.

3.1. Type of copper pipe and insulation material

 CAUTION

Refer to the installation manual for the outdoor unit for description of allowable pipe length 
and height difference.

Selecting pipe sizes

The diameters of the connection pipes according to the capacity of the indoor unit.
Refer to the following table for the proper diameters of the connection pipes between the 
indoor unit and outdoor unit or branch box.

Indoor unit 
capacity

Gas pipe outside diameter 

[mm (in.)]

Liquid pipe outside diameter 

[mm (in.)]

Thickness 

[mm (in.)]

9, 12

9.52 (3/8)

6.35 (1/4)

0.8

(0.0315)

15

12.70 (1/2)

 CAUTION

Install heat insulation around both the gas and liquid pipes. Failure to do so may 
cause water leaks.
Use heat insulation with heat resistance above 120 °C (248 °F). (Reverse cycle model 
only.)
In addition, if the humidity level at the installation location of the refrigerant piping is 
expected to exceed 70%, install heat insulation around the refrigerant piping. If the 
expected humidity level is 70-80%, use heat insulation that is 15 mm (19/32 in.) or 
thicker and if the expected humidity exceeds 80%, use heat insulation that is 20 mm 
(25/32 in.) or thicker.
If heat insulation is used that is not as thick as speci

fi

 ed, condensation may form on the surface 

of the insulation.
In addition, use heat insulation with heat conductivity of 0.045 W/(m•K) or less 20 °C (68 °F).

3.2. Additional materials required for installation

A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire (See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping

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Summary of Contents for 9319357041

Page 1: ...çais Español INSTALLATION MANUAL MANUEL D INSTALLATION MANUAL DE INSTALACIÓN For authorized service personnel only Pour le personnel agréé uniquement Solo para personal autorizado PART NO 9319357041 AIR CONDITIONER ...

Page 2: ... runs as short as possible Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before opening the refrigerant valves When Servicing Turn the power OFF at the main circuit breaker panel before opening the unit ...

Page 3: ...ket 1 Tapping screw big 5 Name and Shape Q ty Name and Shape Q ty Remote controller 1 Tapping screw small 2 Battery 2 Air cleaning filter 2 Seal A It is used when the diameter of gas pipe is Ø12 70 or more It is necessary when using AS15 1 The following items are necessary to install this air conditioner The items are not includ ed with the air conditioner and must be purchased separately Name Q t...

Page 4: ...such as storing food raising animals growing plants or preserving precision devices or art objects It can degrade the quality of the preserved or stored objects Do not install where there is the danger of combustible gas leakage Do not install the unit near a source of heat steam or flammable gas Install the unit where drainage does not cause any trouble Install the indoor unit outdoor unit branch...

Page 5: ... the outside with decorative tape For Left rear piping Left piping Interchange the drain cap and the drain hose CAUTION Insert drain hose and drain cap securely Drain should slope down to avoid water leakage When inserting be sure not to attach any material besides water If any other material is attached it will cause deterioration and water leakage After removing drain hose be sure not to forget ...

Page 6: ...an 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 Width across flats of Flare nut mm in 6 35 1 4 17 21 32 9 52 3 8 22 7 8 12 70 1 2 26 1 1 32 15 88 5 8 29 1 5 32 19 05 3 4 36 1 13 32 6 9 2 Bending pipes If pipes are shaped by hand be careful not to collapse th...

Page 7: ...rminal block 5 Fasten the connection cable with a cable clamp Attach the 1 screw Insert the wire cover tab into the square hole of the indoor unit and fasten with a screw Cable clamp Connection cable Screw Screw Wire cover Connection cable Terminal block Cable clamp Connection cable Screw Screw Wire cover Earth Ground wire Earth Ground screw Indoor unit terminal block Disconnect switch Please conn...

Page 8: ...Connection cable Left piping For connection from the left rear PROHIBITED Pipe Connection pipe heat insulation Bind the pipes together so that there is no gap Indoor unit pipe heat insulation 7 4 How to connect wiring to the terminals Caution when wiring cable When stripping off the insulation of a lead wire always use a special tool such as a wire stripper If there is no special tool available ca...

Page 9: ... Center hooks 2 position Top hooks 2 position Top holes 2 position Indoor unit Front panel Bottom hooks 2 position Bottom hooks 2 position Front panel 2 Attach the 4 screws 3 Attach the wire cover Attach the 1 screw 4 Attach the intake grille CAUTION Install the Front panel and Intake grille securely If installation is imperfect the Front panel or Intake grille may fall off and cause injury 10 TES...

Page 10: ...controller holder installation Install the remote controller a maximum distance of 6 m from the remote control signal receiver However when installing the remote controller check that it operates cor rectly Install the remote controller holder to a wall pillar etc with the tapping screw Remote controller holder fixing Remote controller mounting Remote controller holder Tapping screw small 1 Set Re...

Page 11: ...ART STOP button until only the clock is displayed on the remote controller display 2 Press the MODE button for at least 5 seconds to display the current signal code initially set to 3 Press the SET TEMP buttons to change the signal code between Match the code on the display to the air conditioner signal code 4 Press the MODE button again to return to the clock display The signal code will be chang...

Page 12: ... to the installation conditions Incorrect settings can cause the indoor unit to malfunction After the power is turned on perform the FUNCTION SETTING according to the installation conditions using the remote controller The settings may be selected between the following two Function Number or Setting Value Settings will not be changed if invalid numbers or setting values are selected Refer to the i...

Page 13: ...nsor error 4 2 Indoor unit Heat Ex Middle temp sensor error 5 1 Indoor unit fan motor error 5 3 Drain pump error 5 7 Damper error 5 8 Intake grille error 5 15 Indoor unit error 6 2 Outdoor unit main PCB model information error or communication error 6 3 Inverter error 6 4 Active filter error PFC circuit er ror 6 5 Trip terminal L error 6 10 Display PCB microcomputers communication error 7 1 Discha...

Page 14: ......

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