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Accessories

21 21 

 WARNING

For installation purposes, be sure to use the parts supplied by the manufacturer or 

other prescribed parts.  

The use of non-prescribed parts can cause serious accidents such as the unit falling, 

water leakage, electric shock, or fire.

The following installation parts are furnished. Use them as required.

 

Keep the Installation Manual in a safe place and do not discard any other accessories 

 

until the installation work has been completed.

Name and Shape

Q’ty

Description

Special nut A

(Large flange)

4

For suspending the indoor unit 

from ceiling

Special nut A

(small flange)

4

Coupler heat insulation (Large)

1

For indoor side pipe joint

(Gas pipe)

Coupler heat insulation (Small)

1

For indoor side pipe joint

(Liquid pipe)

Cable tie (Large)

4

For fixing the heat insulation

Cable tie (Medium)

4

For fixing the remote controller 

cable and connection cable 

Cable tie (Small)

1

For fixing the remote controller 

cable

Remote  controller

1

For Air conditioner operation

Screw

(Flush heads)

2

For installing indoor unit remote 

controller

Remote controller cable

1

For connecting the remote 

controller

Optional parts

21 

4

Parts name

Model No.

Summary

Wired remote controller

UTY-RVN*M

For Air conditioner 

operation

Wired remote controller

UTY-RNN*M

For Air conditioner 

operation

Simple remote controller

UTY-RSN*M

For Air conditioner 

operation

Remote sensor

UTY-XSZX

New amenity space can 

be offered by installing 

the Remote sensor in the 

remote controller

External control set

UTD-ECS5A

Use to connect various 

peripheral devices and air 

conditioner PC board

INSTALLATION WORK

21 

Especially, the installation place is very important for the split type air conditioner because 

it is very difficult to move from place to place after the first installation. 

Selecting an installation location

21 

1

Decide the mounting position together with the customer as follows.

 WARNING

Select installation locations that can properly support the weight of the indoor unit. 

Install the units securely so that they do not topple or fall.

 CAUTION

Do not install the indoor unit in the following areas:

Area with high salt content, such as at the seaside.  

 

It will deteriorate metal parts, causing the parts to fall or the unit to leak water.

Area filled with mineral oil or containing a large amount of splashed oil or steam, 

 

such as a kitchen.  

It will deteriorate plastic parts, causing the parts to fall or the unit to leak water.

Area that generates substances that adversely affect the equipment, such as sulfuric 

 

gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to 

corrode, which can cause refrigerant leakage.

Area that can cause combustible gas to leak, contains suspended carbon fibers or 

 

flammable dust, or volatile inflammables such as paint thinner or gasoline. If gas 

leaks and settles around the unit, it can cause a fire.

Area where animals may urinate on the unit or ammonia may be generated.

 

Do not use the unit for special purposes, 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, power supply cable, transmission cable, and remote 

control cable at least 1 m away from a television or radio receivers. The purpose of this 

is to prevent TV reception interference or radio noise.  

(Even if they are installed more than 1 m apart, you could still receive noise under 

some signal conditions.)

Install the unit where ambient temperature does not reach 60°C or more. 

 

Take a measure such as ventilation for an environment in which heat is retained.
If children under 10 years old may approach the unit, take preventive measures so that 

they cannot reach the unit.
Take precautions to prevent the unit from falling.

Install the indoor unit on a place having a sufficient strength so that it withstands 

(1) 

against the weight of the indoor unit.

The inlet and outlet ports should not be obstructed; the air should be able to blow all 

(

2

over the room.

Leave the space required to service the air conditioner.

(3) 

Install the unit where connection to the outdoor unit is easy.

(4) 

Install the unit where the connection pipe can be easily installed.

(5) 

Install the unit where the drain pipe can be easily installed.

(

6

Install the unit where noise and vibrations are not amplified.

(7) 

Take servicing, etc., into consideration and leave the spaces. Also install the unit where 

(8) 

the filter can be removed.

Do not install the unit where it will be exposed to direct sunlight. 

 

(9) 

 

Installation dimension

21 21 

 Installation by which service space is made on top of the unit 

21 21 

1

(recommended)

Install the unit away from the ceiling by 350 mm or more.

350 

or 

more

2500 or more

(When no ceiling)

Service

space

Unit : mm

Service access

500 or more

Floor

 

9380441038_IM.indb   2

28/1/2556   13:44:24

Summary of Contents for INDOOR UNIT Duct Type

Page 1: ...os Solo para personal autorizado MANUALE D INSTALLAZIONE UNITÀ INTERNA Tipo di condotto Ad uso esclusivo del personale autorizzato ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ ΕΣΩΤΕΡΙΚΗ ΜΟΝΑΔΑ Τύποςαγωγού Гια εξουσιοδοτημένο προσωπικό σέρβις MANUAL DE INSTALAÇÃO UNIDADE INTERIOR Tipo conduta Apenas para técnicos autorizados РУКОВОДСТВО ПО УСТАНОВКЕ ВНУТРЕННИЙ МОДУЛЬ Канального типа Для yпoлнoмoчeнного персонала KURULU...

Page 2: ... person responsible for their safety Children should be supervised to ensure that they do not play with the appliance ABOUT THE UNIT 222 Precautions for using R410A refrigerant 222222 WARNING Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle If air enters the refrigeration cycle the pressure in the refrigeration cycle will become abnormally high and ...

Page 3: ...s to fall or the unit to leak water Area that generates substances that adversely affect the equipment such as sulfuric gas chlorine gas acid or alkali It will cause the copper pipes and brazed joints to corrode which can cause refrigerant leakage Area that can cause combustible gas to leak contains suspended carbon fibers or flammable dust or volatile inflammables such as paint thinner or gasolin...

Page 4: ...n of the indoor unit If maintenance work is to be done from the top keep the space of the more than 450 mm between the indoor unit and ceiling 800 or more 500 or more 30 or more 500 or more 200 or more Service access size of 3 2 1 Drain pan Unit mm Service access size of 3 2 2 Installation the unit 333333 WARNING Install the air conditioner in a location which can withstand a load of at least 5 ti...

Page 5: ...than those indicated in the table even if they are available on the market Pipe outside diameter mm in Thickness mm 6 35 1 4 0 8 9 52 3 8 0 8 12 70 1 2 0 8 15 88 5 8 1 0 19 05 3 4 1 2 Pipe requirement 444444 CAUTION Refer to the Installation Manual of the outdoor unit for description of the length of connecting pipe or for difference of its elevation Diameter mm in Liquid 9 52 3 8 Gas 15 88 5 8 Us...

Page 6: ...y side Flare nut Holding Wrench Flare nut mm in Tightening torque N m kgf cm 6 35 1 4 dia 16 to 18 160 to 180 9 52 3 8 dia 32 to 42 320 to 420 12 70 1 2 dia 49 to 61 490 to 610 15 88 5 8 dia 63 to 75 630 to 750 19 05 3 4 dia 90 to 110 900 to 1 100 Installing heat insulation 444444 Install the heat insulation material after performing a refrigerant leak check see the Installation Manual for the out...

Page 7: ...led electrical box cover can cause serious accidents such as electric shock or fire through exposure to dust or water Install sleeves into any holes made in the walls for wiring Otherwise a short circuit could result Install a ground leakage breaker In addition install the ground leakage breaker so that the entire AC main power supply is cut off at the same time Otherwise electric shock or fire co...

Page 8: ...und the remote controller if it has a earth ground wire 2 After wiring is complete secure the remote controller cable connection cable and power supply cable with the cable clamps Connection cable to outdoor unit Remote controller cable Cable tie Medium Accessory Control box 3 Seal the cable outlet or other gaps with putty to prevent dew condensation or insect from entering the electric control bo...

Page 9: ...ing Refer to 11 3 Dual remote controllers 3 Cannot be used Do not change 4 Cannot be used Do not change 5 Cannot be used Do not change 6 Invalidity Validity Memory backup setting Set to ON to use batteries for the memory backup If batteries are not used all of the settings stored in memory will be deleted if there is a power failure Factory setting FUNCTION SETTING 888 CAUTION Confirm whether the ...

Page 10: ... Setting Description Function Number Setting Value Standard No correction 30 00 Low control 1 0 C 01 Slightly lower control 0 5 C 02 Slightly warmer control 0 5 C 03 Warmer control 1 0 C 04 Setting the Heater Room Temperature Correction Depending on the installed environment the room temperature sensor may require a correction The settings may be selected as shown in the table below The unit is fa...

Page 11: ...e control unit normal Is the drain normal Is there any abnormal noise and vibration during operation Do not operate the air conditioner in the running state for a long time Operation method For the operation method refer to the Operating Manual Stop the air conditioner operation Press the MODE button and the FAN button simultaneously for 2 seconds or more to start the test run Test run display Pre...

Page 12: ...oller Indoor unit Outdoor unit 1 Outdoor unit 2 Outdoor unit 3 Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit R C address DIP switch setting Transmission cable Power supply cable Remote controller cable Bus wire Power supply cable Primary Secondary Function number 51 Refrigerant circuit address Function number 02 Simultaneous triple Make sure that the indoor unit with the R C address ...

Page 13: ...ng for room temperature control setting When a remote sensor is connected set the function setting of indoor unit as indicated below Set Function Number 48 Room temperature setting to 01 Setting for room temperature correction When a remote sensor is connected set the function setting of indoor unit as indicated below Set Function Number 30 Cooler air temperature correction to 01 Set Function Numb...

Page 14: ... 1 Indoor unit Indoor unit fan motor1 error 5 3 Indoor unit Drainage error 5 7 Damper error 5 9 Indoor unit Indoor unit fan motor2 error 5 15 Indoor unit Indoor unit error 6 2 Outdoor unit Outdoor unit model information error 6 3 Outdoor unit Inverter error 6 4 Active filter error PFC circuit error 6 5 Outdoor unit I P M error 6 10 Display PCB microcomputers communication error 7 1 Outdoor unit Di...

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