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P/NO : MFL68588802

www.lg.com

INSTALLATION MANUAL

AIR CONDITIONER

TYPE : FLOOR STANDING

• Please read this installation manual completely before installing the product.
• Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
• Please retain this installation manual for future reference after reading it
thoroughly.

ENGLISH

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Содержание APUC488TLA0

Страница 1: ...lease read this installation manual completely before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly ENGLISH ...

Страница 2: ...irection of the air flow vertically or horizontally to circulate indoor air Speed up the fan to cool or warm indoor air quickly in a short period of time Open windows regularly for ventilation as the indoor air quality may deteriorate if the air con ditioner is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weak...

Страница 3: ... a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electrician or an Authorized Service Center Do not disassemble or repair the product There is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the ...

Страница 4: ...fter installation or repair of product Low refrigerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product To avoid vibration or water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause...

Страница 5: ...rts and tools 11 Plumbing materials and storage meth ods 12 Nitrogen substitution method 13 Preparation of Piping 14 Connection of piping 14 Precautions in bending 15 Form the Piping 15 Connecting the Cable to Indoor Unit 16 Connecting the cables to the outdoor unit 17 Power Supply and Wiring 18 Vacuum Drying of the Connecting Pipes and the Indoor Unit 19 Checking the Drainage 20 FINAL CHECK AND T...

Страница 6: ...y Ensure the spaces indicated by arrows from the wall ceiling or other obstacles The indoor unit must keep the maintenance space 40 cm 40 cm 5 cm 100 cm Fence or obstacles More than 50 cm More than 50 cm More than 50 cm More than 100 cm Sunroof Outdoor unit If an awning is built over the unit to prevent direct sunlight or rain exposure be careful that heat radiation from the condenser is not restr...

Страница 7: ...levation A B Indoor unit Outdoor unit ATTENTION Capacity is based on standard length and maximum allowance length is on the basis of reli ability MODEL PIPE SIZE mm inch Max Length A m Max Elevation B m GAS SIDE LIQUID SIDE 48 k Ø15 88 5 8 Ø9 52 3 8 50 30 ...

Страница 8: ...ng length exceeds 7 5 meters additional charge is required ac cording to the following table Example In case of 10 m long pipe one way the amount of refrigerant to be replenished is 10 7 5 x 25 62 5 g MODEL REFRIGERANT CHARGE 48 k Btu h 25 per 1 m Unit g The Indoor Unit Installation 1 The mounting floor should be strong and solid enough to prevent it from vibration 2 Drill the piping hole with 70 ...

Страница 9: ...e flare nut indoor To remove dust and scale in working 8 Check a gas leakage of the connecting part of the pipings Connecting the pipings of the indoor unit 9 Vacuum drying of the piping and indoor unit 10 Open the 3 way liquid side and 3 way gas side valves The air which contains moisture and which re mains in the refrigeration cycle may cause a malfunction on the compressor 11 Form the pipings 1...

Страница 10: ... amount 11 Bombe R410A Gas charge Cleaning the pipe 12 Spanner To tighten the connecting parts of the pipings 13 Monkey spanner 14 Driver Cutting the wires 15 Benchi 150 mm To measure the length 16 Tapeline To make holes through the concrete wall and blocks 17 Core drill 18 Voltmeter Amperemeter Clampmeter To measure the current and voltage 19 Insulation resistance tester To measure the insulation...

Страница 11: ...not cold and warm Clogging of EEV Capillary Gas shortages Degradation of refrigerant oil Poor insulation of the compressor Do not cold and warm Coun termea sure No moisture in the pipe Until the connection is completed the plumbing pipe entrance should be strictly controlled Stop plumbing at rainy day Pipe entrance should be taken side or bottom When removal burr after cutting pipe pipe entrance s...

Страница 12: ...en the internal pressure in pipe is abo ve the atmospheric pressure pinhole is o ccurred and it is a leakage cause Oxide scale Nitrogen CAUTION Always use the nitrogen not use oxygen carbon dioxide and a Chevron gas Please use the following nitrogen pressure 0 02 MPa Oxygen Promotes oxidative degradation of refrigerant oil Because it is flammable it is strictly prohibited to use Carbon dioxide Deg...

Страница 13: ... outdoor units than put them on pipe tube having completed burr removal Not possible to put them on after flaring work Flaring work Carry out flaring work using dedicated flaring tool for R410A as shown below Firmly hold copper tube in a bar or die as in dicated dimension in the table above Check Compare the flared work with figure below If flare is noted to be defective cut off the flared section...

Страница 14: ...e the tubing holder into original posi tion 3 Route the tubing and the drain hose staight backwards 4 Insert the connecting cable into the indoor unit through the hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy connection later 5 Tape the tubing and the connecting cable 6 Indoor unit installation 7 Connecting the pipings to the indoor unit Align the cente...

Страница 15: ...le from down to up 2 In order to prevent water from entering the room form a trap and tape the piping 3 Fix the piping onto the wall with saddle or bracket Connecting the Cable to In door Unit In order to protect cable it should be in serted Bushing Rubber The inside and outside connecting cable can be connected after opening the inlet grille 1 Open the inlet grille manually Fig 1 2 Open the contr...

Страница 16: ...trol board individually 2 Secure the cable onto the control board with the cord clamp 3 Refix the front panel Right to the original position with the screw Connecting cable Power cable Case 1 Case 2 Connecting cable Power cable Over 5mm Perform grounding This product should be grounded Defective grounding could cause an electric shock CAUTION Over 5mm Round pressure terminal Power wire ...

Страница 17: ...burn out of the wires See to it that the starting voltage is main tained at more than 90 percent of the rated voltage marked on the name plate The following troubles would be caused by voltage drop down Vibration of a magnetic switch damage on the contact point there of fuse break ing disturbance to the normal function of a overload protection device 2 Wiring After the confirmation of the above co...

Страница 18: ...the service port nut and connect the gauge manifold and the vacuum pump to the service port by the charge hose 4 Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below 76 cmHg 5 Remove the valve stem nuts and fully open the stems of the 2 way and 3 way valves with a hexagon wrench 6 Tighten the valve stem nuts of the 2 way valve and 3 way valve 7 Disconnect the ...

Страница 19: ...g the Drainage 1 Remove the inlet grille with your hands as shown right and left and pull in the direction indi cated by the arrow 2 Check the drainage Pour a glass of water into the drain pan Ensure if water flows drain hose of indoor unit ...

Страница 20: ...repare the running test as follows Connect compound gauges to the check joints at discharge and suction sides of the compres sor Turn all switches OFF Turn the main switch ON Running test should be accomplished as follows Set operation switch at FAN and the fan will start Check to ensure that the fan sounds nor mal Next set it at COOL and the compressor will start Check to ensure that the compress...

Страница 21: ...vent damage from localized heavy rain and avoid frequent flooded area If you can t meet above guide line in the seaside installation please contact LG Electronics for the additional anticorro sion Periodic more than once year clean ing of the dust or salt particles stuck on the heat exchanger by using water CAUTION Air conditioners should not be installed in areas where corrosive gases such as aci...

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