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En-5

6.6.2. Bending pipes

•  If pipes are shaped by hand, be careful not to collapse them.
•  Do not bend the pipes in an angle more than 90°.
•  When pipes are repeatedly bend or stretched, the material will harden, making it 

dif

fi

 cult to bend or stretch them any more. 

•  Do not bend or stretch the pipes more than 3 times.

  CAUTION

To prevent breaking of the pipe, avoid sharp bends. 

If the pipe is bent repeatedly at the same place, it will break.

6.6.3. Pipe connection

  CAUTION

 Be sure to Install the pipe against the port on the indoor unit correctly. If the centering 
is improper, the 

fl

 are nut cannot tighten smoothly. If the 

fl

 are nut is forced to turn, the 

threads will be damaged.

Do not remove the flare nut from the indoor unit pipe until immediately before 
connecting the connection pipe.

Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to 
tighten the 

fl

 are nut correctly.

 Tighten the 

fl

 are nuts with a torque wrench using the speci

fi

 ed tightening method. 

Otherwise, the 

fl

 are nuts could break after a prolonged period, causing refrigerant to 

leak and generate hazardous gas if the refrigerant comes into contact with a 

fl

 ame.

Connect the piping so that the control box cover can easily be removed for servicing 
when necessary.

In order to prevent water from leaking into the control box, make sure that the piping is 
well insulated.

When the 

fl

 are nut is tightened properly by your hand, hold the body side coupling with a 

wrench, then tighten with a torque wrench. (See the table below for the 

fl

 are nut tightening 

torques.)

Torque wrench

Connection pipe

Flare nut 

Wrench (

fi

 xed)

Tighten with two wrenches.

Indoor unit pipe 
(Body side)

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)

7. ELECTRICAL WIRING

Cable

Cable size (mm

2

)

Type

Remarks

Connection cable

1.5

Type 60245 IEC57

Earth (Ground), 1

φ

230V

Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop 
is 2% or more.

]1

7.1.  Wiring system diagram

 

INDOOR UNIT

TERMINAL

Power line

Control line

Earthing (Grounding) line

Type 60245 IEC57
Cable size 1.5 mm

2

 

(Inter-unit) Power lines

OUTDOOR UNIT 
or BRANCH BOX

Please connect it to 
the speci

fi

 ed terminal. 

 CAUTION

Every wire must be connected 

fi

 rmly.

No wire should be allowed to touch refrigerant tubing, the compressor or any 
moving part.

Loose wiring may cause the terminal to overheat or result in unit malfunction. A 

fi

 re hazard may also exist. Therefore, be sure all wiring is tightly connected.

Connect wires to the matching numbers of terminals.

7.2.  Indoor unit wiring

(1) Remove the cable clamp.
(2) Bend the end of the connection cable as shown in the 

fi

 gure.

(3) Connect the end of the connection cable fully inserting into the terminal block.
(4) Fasten the connection cable with a cable clamp.

1 2

3 4

 

 

  

Cable clamp 
(There is a 
terminal block 
inside.) 

Connection 
cable

Cable clamp

Square hole

Insert the tab into the square hole of the 
indoor unit and fasten with a screw.

Connection cable

Screw

Screw

Tab

35 mm

25 mm

Earth (Ground) wire

7.3.  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, carefully strip the insulation with a knife etc.

(1)  Use crimp-type terminals with insulating sleeves as shown in the 

fi

 gure below to con-

nect to the terminal block.

(2)  Securely clamp the crimp-type terminals to the wires using an appropriate tool so that 

the wires do not come loose.

Strip : 10 mm

Sleeve

Crimp-type terminal

(3)  Use the speci

fi

 ed wires, connect them securely, and fasten them so that there is no 

stress placed on the terminals.

(4)  Use an appropriate screwdriver to tighten the terminal screws. Do not use a screw-

driver that is too small, otherwise, the screw heads may be damaged and prevent the 
screws from being properly tightened.

(5)  Do not tighten the terminal screws too much, otherwise, the screws may break.

Wire

Screw with 
special washer

Screw with 
special washer

Crimp-type 
terminal

Crimp-type 
terminal

Terminal blocks

Wire

(6)  See the table for the terminal 

screw tightening torques.

Tightening torque [N·m (kgf·cm)]

M4 screw

1.2 to 1.8 (12 to 18)

 CAUTION

Match the terminal block numbers and connection cable colors with those of the 
outdoor unit or branch box.
Erroneous wiring may cause burning of the electric parts.

Connect the connection cables 

fi

 rmly to the terminal block. Imperfect installation may 

cause a 

fi

 re.

Always fasten the outside covering of the connection cable with the cable clamp. 
(If the insulator is chafed, electric discharge may occur.)

Always connect the earth (ground) wire.

Do not use the earth (ground) screw of the indoor unit for the connection other than a 
speci

fi

 ed outdoor unit or branch box.

9318739084_IM.indb   5

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9/27/2012   1:43:53 PM

9/27/2012   1:43:53 PM

Summary of Contents for AOYG18LFC

Page 1: ...e autorizzato ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ Μόνο για εξουσιοδοτημένο προσωπικό του σέρβις MANUAL DE INSTALAÇÃO Apenas para técnicos de assistência autorizados РУКОВОДСТВО ПО УСТАНОВКЕ Только для авторизованного обслуживающего персонала MONTAJ KILAVUZU Sadece yetkili servis personeli içindir INSTALLATION MANUAL AIR CONDITIONER INDOOR UNIT Wall Mounted Type PART NO 9318739084 h c s t u e D s i a ç n a r F...

Page 2: ... 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 inch 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...

Page 3: ...arts Parts name Model No Application Wired Remote Controller UTY RNN M For air conditioner operation Simple Remote Controller UTY RSN M For air conditioner operation External connect kit UTY XWZX For control input output port 3 GENERAL This INSTALLATION MANUAL briefly outlines where and how to install the air conditioning system Please read over the entire set of instructions for the indoor and ou...

Page 4: ...e installed more than 1 m apart you could still receive noise under some signal conditions If children under 10 years old may approach the unit take preventive measures so that they cannot reach the unit Install the indoor unit on the wall where the height from the floors more than 1800 mm 6 INSTALLATION WORK 1 6 1 Installation dimensions Remote controller Remote controller holder Tapping screw sm...

Page 5: ...r piping and drain hose through the wall hole hang the indoor unit on the hooks at the top and bottom of the wall hook bracket Installing the indoor unit Hang the indoor unit from the hooks at the top of the wall hook bracket Insert the spacer etc between the indoor unit and the wall hook bracket and separate the bottom of the indoor unit from the wall Indoor unit Wall hook bracket Spacer Wall hoo...

Page 6: ...wire must be connected firmly No wire should be allowed to touch refrigerant tubing the compressor or any moving part Loose wiring may cause the terminal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected Connect wires to the matching numbers of terminals 7 2 Indoor unit wiring 1 Remove the cable clamp 2 Bend the end of the conn...

Page 7: ...n pipe heat insulation Vinyl tape Indoor unit pipe heat insulation Wrap with cloth tape Pipe Drain hose Cloth tape Left piping Connection cable Pipe Drain hose For connection from the left rear Connection cable Wall pipe Connection pipe Drain hose Check the following GOOD Saddle Drain hose Lifted up Wave End in water PROHIBITED 1 9 FRONT PANEL REMOVAL AND INSTALLATION 9 1 Intake grille removal 1 O...

Page 8: ...rts External input output wire Cable Field supply Insulated connection 10 TEST RUN WARNING Do not turn on the power until all installation work is complete CAUTION When restarting after a long period of disuse in the winter turn the power switch on at least 12 hours before starting the unit Check items 1 Is operation of each button on the remote controller normal 2 Does each lamp light normally 3 ...

Page 9: ...de Use the following steps to select the signal code of the re mote controller Note that the air conditioner cannot receive a signal code if the air conditioner has not been set for the signal code The signal codes that are set through this process are ap plicable only to the signals in the FUNCTION SETTING For details on how to set the signal codes through the normal process refer to Remote contr...

Page 10: ...onditioner signal code setting try each of the signal codes until you find the code which operates the air conditioner 14 CUSTOMER GUIDANCE Explain the following to the customer in accordance with the operating manual 1 Starting and stopping method operation switching temperature adjustment timer air flow switching and other remote control unit operations 2 Air filter removal and cleaning and how ...

Page 11: ...door unit main PCB model information error or communication error 6 3 Inverter error 6 4 Active filter error PFC circuit error 6 5 Trip terminal L error 6 10 Display PCB microcomputers communication error 7 1 Discharge temp sensor error 7 2 Compressor temp sensor error 7 3 Outdoor unit Heat Ex liquid temp sensor error 7 4 Outdoor temp sensor error 7 5 Suction Gas temp sensor error 7 6 2 way valve ...

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