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P/NO : MFL40910624

www.lg.com

INSTALLATION MANUAL

AIR CONDITIONER

• 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.

TYPE : HIGH EFFICIENCY INVERTER

ENGLISH

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Содержание UU48WH

Страница 1: ...ion 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 TYPE HIGH EFFICIENCY INVERTER ENGLISH ...

Страница 2: ...condi tioner 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 weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number You c...

Страница 3: ...fective 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 cover...

Страница 4: ...duct CAUTION Installation Always check for gas refrigerant leakage after 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 a...

Страница 5: ...r Unit and Outdoor Unit 12 THE OUTDOOR UNIT INSTALLATION 12 Connecting the cable to Outdoor Unit 14 CONNECTING PIPES 14 Preparation of Piping 15 Connecting the pipings to the indoor unit and drain hose to drain pipe 15 Connecting the pipes to the Outdoor unit 17 Forming the piping 18 LEAKAGE TEST AND EVACUATION 18 Preparation 18 Leakage test 19 Evacuation 20 TEST RUNNING 22 NIGHT SILENT OPERA TION...

Страница 6: ... 50 5 30 40 UU36WH UU42WH UU48WH Ø15 88 5 8 Ø9 52 3 8 5 75 5 30 40 Piping length and the elevation Single Operation Outdoor unit If an awning is built over the unit to prevent direct sunlight or rain exposure make sure that heat radiation from the condenser is not restricted Ensure that the spaces indicated by arrows around front back and side of the unit Do not place animals and plants in the pat...

Страница 7: ...hose by cutting or direct insertion to the diameter of pipe 7 ENGLISH CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Improper refrigerant charge may result in abnormal cycle NOTE b Rated performance for refrigerant line length C Additional charging Refrigerant of Branch Liquid Pipe B Additional charging Refrigerant of Main Liquid Pipe Selec...

Страница 8: ...IT BD BRANCH DIS TRIBUTOR UNIT REMO WIRED RE MOTE CON TROLLER ODU BD IDU IDU REMO ODU BD IDU IDU IDU REMO BD IDU IDU IDU IDU ODU REMO MODEL Cassette Duct Cassette Duct Cassette Duct UU36WH UT18H UTN18WH NP1 x 2 UB18H NG1 2 UT12H UTN12WH NP1 x 3 UU42WH UT21H UTN21WH NN1 x 2 UB21H NG1 2 UT18H UTN18WH NP1 x 3 UB18H NG1 3 UT12H UTN12WH NP1 x 4 UU48WH UT24H UTN24WH NN1 x 2 UB24H NG1 2 UT18H UTN18WH NP1...

Страница 9: ...kers When Addressing work is done green LED is off else LED LED01G stops flick ering and lights continuously Address of indoor unit is indicated on the wired re mote control display window CH01 CH02 CH03 CH04 Press button to turn on the indoor If you fail to perform the Addressing work repeat step 2 5 1 means S W on 0 means S W off Night Silent Operation setting 1 Open the side panel of outdoor un...

Страница 10: ... board individually according to the outdoor unit connection Ensure that the color of the wires of outdoor unit and the terminal No are the same as those of indoor unit respectively Outdoor Indoor Main power source Switch box ELCB 2 N 3 1 L S CN REMO CN REMO CN REMO Terminals on the indoor unit 4 2 N 3 1 L S Terminals on the indoor unit 3 2 N 3 1 L S Terminals on the indoor unit 2 2 N 3 1 L M Term...

Страница 11: ...the power terminal block Slack in the power wiring may cause abnormal heat When connecting wiring which is the same thickness do as shown in the figure below WIRING CONNECTION 11 ENGLISH WARNING Make sure that the screws of the terminal are free from looseness Round pressure terminal Power wire CAUTION Installation work must be performed in accordance with the national wiring stan dards by authori...

Страница 12: ...en with earth screw Capacity 6 7 kW CAUTION The circuit diagram is not subject to change without notice Be sure to connect wires according to the wiring diagram Connect the wires firmly so that not to be pulled out easily Connect the wires according to color codes by referring the wiring diagram Make sure the rubber bushes are Properly used in knock out holes after connecting main Power cable Conn...

Страница 13: ... sulation material procured locally to stop up all gaps as shown in the figure 2 Insects or small animals entering the outdoor unit may cause a short circuit in the electrical box 13 ENGLISH Forward Sideways Backward Figure 1 Gas side piping Bigger Dia Liquid side pipi Smaller Dia Drain hose Connecting wire Connection pipe Figure 2 Putty or insulating material produced locally ...

Страница 14: ...ttached to indoor and 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 indi cated dimension in the table above Check Compare the flared work with figure below If flare is noted to be defective cut o...

Страница 15: ...s When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench Outside diameter Torque mm inch kgf m Ø6 35 1 4 1 8 2 5 Ø9 52 3 8 3 4 4 2 Ø12 7 1 2 5 5 6 6 Ø15 88 5 8 6 6 8 2 Indoor unit tubing Flare nut Pipings Torque wrench Indoor unit tubing Spanner fixed Connection pipe Flare nut Vinyl tape narrow Adhesive Drain pipe Indoor unit drain hose...

Страница 16: ...base pan refer to figure 2 Preventing foreign objects from entering Fig ure3 Plug the pipe through holes with putty or in sulation material procured locally to stop up all gaps as shown in the figure 3 Forward Sideways Backward Downward Figure 1 Knock out Base pan Figure 2 Gas side piping Liquid side pip Drain hose Connecting wire Connection pipe Figure 3 Putty or insulating material produced loca...

Страница 17: ...astic band band Plastic band Seal a small Seal a small opening around opening around the pipings with the pipings with gum type sealer gum type sealer Seal a small opening around the pipings with gum type sealant Trap Seal a small opening around the pipings with gum type sealer OUTDOOR OUTDOOR UNIT UNIT OUTDOOR UNIT O Trap Trap Trap Trap Seal a small opening Seal a small opening around the pipings...

Страница 18: ...an 3 8 Mpa with dry nitrogen gas and close the cylinder valve when the gauge reading reached 3 8 MPa Next test for leaks with liq uid soap 1 Do a leakage test of all joints of the tub ing both Indoor unit and outdoor unit and both gas and liquid side service valves Bubbles indicate a leak Be sure to wipe off the soap with a clean cloth 2 After the system is found to be free of leaks relieve the ni...

Страница 19: ...o fully open the valve 3 Loosen the charge hose connected to the gas side service port slightly to release the pressure then remove the hose 4 Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench This process is very important to prevent leakage from the system 5 Replace the valve caps at both gas and liq uid side service val...

Страница 20: ...plete refrigerant and drain piping Is there any leakage of refrigerant Is the remote controller switch oper ated Is there any faulty wiring Are not terminal screws loosened M4 118N cm 12kgf cm M5 196N cm 20kgf cm M6 245N cm 25kgf cm M8 588N cm 60kgf cm 2 Connection of power supply Connect the power supply cord to the in dependent power supply Circuit breaker is required Operate the unit for fiftee...

Страница 21: ... burn out of the wires 4 Specification of power source 5 Confirm that electrical capacity is sufficient 6 Be sure that the starting voltage is maintained at more than 90 percent of the rated volt age marked on the name plate 7 Confirm that the cable thickness is as specified in the power sources specification Particularly note the relation between cable length and thickness 8 Never fail to equip a...

Страница 22: ...LENT OPERATION SETTING 1 Open the panel of outdoor unit 2 Set the DIP SW01N as below Fig 3 Close the panel ON 1 2 3 4 DIP SW01N DIP Switch2 Function ON Night Silent Operation ON OFF Night Silent Operation OFF ON 1 2 3 4 DIP SW01N 22 ENGLISH ...

Страница 23: ...times 8times OFF 29 Comp Over Current 2times 9times OFF 32 D Pipe High Inv 3times 2times OFF 41 Inv D Pipe Th Error Open Short 4times 1time OFF 44 Outdoor air Th Error Open Short 4times 4times OFF 45 Cond Middle Pipe Th Error Open Short 4times 5times OFF 46 Suction Pipe Th Error Open Short 4times 6times OFF 48 Cond Out Pipe Th Error Open Short 4times 8times OFF 51 Capacity over 5times 1time OFF 53...

Страница 24: ... meet above guide line in the seaside installation please contact LG Electronics for the additional anticorrosion Periodic more than once year cleaning of the dust or salt particles stuck on the heat exchanger by using water INSTALLATION GUIDE AT THE SEASIDE CAUTION Air conditioners should not be installed in areas where corrosive gases such as acid or alkaline gas are produced Do not install the ...

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