LG Multi V Plus II ARUN100LT2 Installation Manual Download Page 63

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Electrical Wiring

ENGLISH

Installation Manual

◆

Example Connection of Communication Cable

[BUS type]

• Connection of communication cable must be

installed like below figure between indoor unit to out-
door unit.

[STAR type]

• Abnormal operation can be caused by communica-

tion defect, when connection of communication cable
is installed like below figure(STAR type).

Summary of Contents for Multi V Plus II ARUN100LT2

Page 1: ... 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 R410A ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH PORTUGUESE ...

Page 2: ...n Process 7 Outdoor units Information 8 Environment friendly Alternative Refrigerant R410A 13 Select the Best Location 13 Installation Space 14 Lifting method 18 Installation 19 Refrigerant piping installation 24 Electrical Wiring 52 Test Run 71 Caution For Refrigerant Leak 93 Installation guide at the seaside 95 ...

Page 3: ...ay result Ask the dealer or an authorized technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Always intstall a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock For re installation of the installed product always ...

Page 4: ... and moving the air condition er to another site do not charge it with a different refrigerant from the refrigerant specified on the unit If a different refrigerant or air is mixed with the original refrigerant the refrigerant cycle may malfunction and the unit may be damaged Do not reconstruct to change the settings of the protection devices If the pressure switch thermal switch or other protecti...

Page 5: ... cause the air condition er to operate erroneously or fail to operate On the other hand the air conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcasting Do not install the product where it is exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause produ...

Page 6: ...y cut your fingers When transporting the outdoor unit suspending it at the specified positions on the unit base Also support the outdoor unit at four points so that it cannot slip sideways Do not touch any of the refrigerant piping during and after operation It can cause a burn or frostbite Do not operate the air conditioner with the panels or guards removed Rotating hot or high voltage parts can ...

Page 7: ...ho is to be responsible for switch settings Determination of division work The vacuum pump used must have a capacity of reaching at least 5 torr more than 1 hour Vacuum drying Recharge correctly as calculated in this manual and record the amount of added refrigerant Additional charge of refrigerant Make sure there are no gaps left between the facing materials used on the ceiling Fit facing panels ...

Page 8: ... ARUN120LT2 ARUN140LT2 ARUN160LT2 ARUN180LT2 ARUN120LT2 ARUN140LT2 ARUN160LT2 ARUN120LT2 ARUN60LT2 8 8 8 4 5 8 1 2 3 1 20 30 23 35 26 40 29 36 285 285 285 175 285 1280x1607x730 1280x1607x730 1280x1607x730 1280x1607x730 806X1607X730 50 4x63 3x28 7 50 4x63 3x28 7 50 4x63 3x28 7 50 4x63 3x28 7 31 7x63 3x28 7 12 7 1 2 12 7 1 2 12 7 1 2 15 88 5 8 28 58 1 1 8 28 58 1 1 8 28 58 1 1 8 28 58 1 1 8 Ratio of...

Page 9: ...63 3x28 7 x2 50 4x63 3x28 7 x2 31 7x63 3x28 7 19 05 3 4 19 05 3 4 19 05 3 4 19 05 3 4 34 9 1 3 8 34 9 1 3 8 34 9 1 3 8 34 9 1 3 8 Unit System HP Model Combination unit Independent unit Product Charge kg CF Correction Factor kg Max Connectable No of Indoor Units Net Weight kg mm Dimensions WxHxD inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inch 2 Units 20 22 24 26 ARUN200LT2 ARUN220LT2 A...

Page 10: ...06X1607X730 806X1607X730 x 3 x 3 50 4x63 3x28 7 x2 50 4x63 3x28 7 x2 50 4x63 3x28 7 50 4x63 3x28 7 31 7x63 3x28 7 31 7x63 3x28 7 x 3 x 3 19 05 3 4 19 05 3 4 19 05 3 4 19 05 3 4 41 3 1 5 8 41 3 1 5 8 41 3 1 5 8 41 3 1 5 8 Unit System HP Model Combination unit Independent unit Product Charge kg CF Correction Factor kg Max Connectable No of Indoor Units Net Weight kg Dimensions mm WxHxD inch Connecti...

Page 11: ...2 ARUV140LT2 ARUV160LT2 ARUV180LT2 ARUV120LT2 ARUV140LT2 ARUV160LT2 ARUV120LT2 ARUV60LT2 8 8 8 4 5 8 1 2 3 1 20 30 23 35 26 40 29 36 285 285 285 175 285 1280x1607x730 1280x1607x730 1280x1607x730 1280x1607x730 806X1607X730 50 4x63 3x28 7 50 4x63 3x28 7 50 4x63 3x28 7 50 4x63 3x28 7 31 7x63 3x28 7 12 7 1 2 12 7 1 2 12 7 1 2 15 88 5 8 28 58 1 1 8 28 58 1 1 8 28 58 1 1 8 28 58 1 1 8 Unit System HP Mod...

Page 12: ...Pipes mm inch 3 Units 36 38 40 42 ARUV360LT2 ARUV380LT2 ARUV400LT2 ARUV420LT2 ARUV160LT2 ARUV160LT2 ARUV160LT2 ARUV160LT2 ARUV140LT2 ARUV160LT2 ARUV140LT2 ARUV160LT2 ARUV60LT2 ARUV60LT2 ARUV100LT2 ARUV100LT2 4 5 8x2 4 5 8x2 8x3 8x3 5 6 5 6 58 64 61 64 64 64 64 64 175 285x2 175 285x2 240 285x2 240 285x2 1280x1607x730 x2 1280x1607x730 x2 1280x1607x730 1280x1607x730 806x1607x730 806x1607x730 x 3 x 3 ...

Page 13: ...shines 2 Performance of heating will be reduced and preheat time of the indoor unit may be lengthened in case of installing the outdoor unit in winter at following location 1 Shade position with a narrow space 2 Location with much moisture in neighboring floor 3 Location with much humidity around 4 Location where water gathers since the floor is not even The refrigerant R410A has the property of h...

Page 14: ...open close type 250 mm or more 150 mm from the wall C A B C A B h H Front Side Rear Side C A B C Front Side Rear Side C A B C Front Side Rear Side C A B C B A Control Box Front Side Rear Side B A Control Box Front Side Rear Side Front Side Rear Side Side view Top view Side view Top view C E D A B 250 mm or more 350 mm or more at the coastal area 150 mm from the wall B A B A h H Front Side Rear Sid...

Page 15: ...guide Air outlet guide procured at the side A B D E Side view E D A Front Side B Rear Side Door When unit is surrounded by walls 700 mm or more Control box is of a open close type 250 mm or more A B A B B B Front Side Rear Side A B B B Front Side Rear Side A B B B Front Side Rear Side A B B B Front Side Rear Side A B B B Front Side Rear Side Front Side Rear Side A B B B When there is an obstructio...

Page 16: ...t Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear Side Front Side Rear...

Page 17: ...system may malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the higher installation console by 50cm than the average snowfall annual average snowfall if it is installed at the area with much snowfall Where snow accumulated on the upper part of the Outdoor Unit by more than 10cm always remove snow for operation 1 The height of H frame must be mo...

Page 18: ...em as a mean for transportation because they are dangerous Do not touch heat exchanger fins with your bare hands Otherwise you may get a cut in your hands Tear plastic packaging bag and scrap it so that children cannot play with it Otherwise plastic packaging bag may suffocate children to death When carrying in Outdoor Unit be sure to support it at four points Carrying in and lifting with 3 point ...

Page 19: ...allation Installation foot Location of anchor bolt 10 383 10 383 700 2 900 2 900 2 900 2 UW1 UW1 UW1 383 383 700 2 900 2 900 2 900 2 UW1 UW1 UW1 10 383 500 2 700 2 900 2 900 2 10 383 UY2 UW1 UW1 10 383 500 2 700 2 900 2 900 2 10 10 383 383 900 2 900 2 900 2 UW1 UW1 UW1 10 10 10 10 10 150 150 383 UY2 UW1 UW1 383 533 533 500 2 900 2 900 2 383 UY2 UW1 UW1 UY2 UW1 ...

Page 20: ...eam Concrete base 100 WARNING Be sure to install unit in a place strong enough to withstand its weight Any lack of strength may cause unit to fall down resulting in a personal injury Have installation work in order to protect against a strong wind and earthquake Any installation deficiency may cause unit to fall down resulting in a personal injury Especially take care for support strength of the f...

Page 21: ...laring tool as shown below Firmly hold copper tube in a bar or die as indicated dimension in the table above 4 Check Compare the flared work with figure below If flare is noted to be defective cut off the flared section and do flaring work again Main cause of gas leakage is defect in flaring work Carry out correct flaring work in the following procedure Pipe A Gas Liquid Gas Liquid 5 6 19 100 1 2 ...

Page 22: ...l the piping has been connected use nitrogen to perform a gas leak check Tightening torque Union CAUTION Always use a charge hose for service port connection After tightening the cap check that no refrigerant leaks are present When loosening a flare nut always use two wrenches in combination When connecting the piping always use a spanner and torque wrench in combination to tighten the flare nut W...

Page 23: ...y default However if it is operated for a long time in high humid atmosphere dew point tempera ture more than 23 C water drops are liable to fall In this case add heat insulation material according to the following procedure Heat insulation material to be prepared EPDM Ethylene Propylene Diene Methylene over 120 C the heat resistance temperature Add the insulation over 10mm thickness at high humid...

Page 24: ...en blow into the service valve port Releasing pressure 0 02 MPa or less Flare nut Loose or tighten flare nut by using the wrench with both ends Coat the flare connection part with oil for the compressor Cap Remove caps and operate valve etc After opera tion always reattach caps tightening torque of valve cap 25Nm 250kg cm or more Don t remove the internal part of the port Service port Make the ref...

Page 25: ...Slave2 Outdoor Unit Master Outdoor Unit Knock out Communication Line Hole Power Cable Hole Pipe Hole Side Front 2 outdoor units 3 outdoor units WARNING After installing the pipe clog the pipe excavation inlet of the front panel and the side panel Wire may be damaged due to entry of rats animals etc CAUTION When you use the Hi Low pressure common pipe to connect 2 3 ODU please remove the factory su...

Page 26: ...pipe Ø 34 9 OD28 58 Ø19 05 Ø22 2 OD34 9 Ø38 1 Ø15 88 OD19 05 Don t cut the pipe less than 70mm Blow nitrogen while brazing Main outdoor gas pipe Ø 38 1 Ø 34 9 Ø 34 9 Ø 28 58 Ø 28 58 Ø 41 3 Don t cut the pipe less than 70mm Blow nitrogen while brazing OD28 58 Ø19 05 Ø22 2 Ø38 1 OD34 9 Ø15 88 OD19 05 OD12 7 Ø9 52 Ø22 2 OD19 05 OD28 58 Ø19 05 Ø22 2 Ø22 2 OD19 05 Ø9 52 OD12 7 Ø9 52 OD12 7 Connection o...

Page 27: ... then use an adapter for connecting different diameters to connect the piping 7 Always observe the restrictions on the refrigerant piping such as rated length difference in height and piping diameter Failure to do so can result in equipment failure or a decline in heating cooling performance 8 A second branch cannot be made after a header These are shown by 9 The Multi V will stop due to an abnorm...

Page 28: ...Max 10 Max 10 Product length Max 10 distance between Outdoor Units Pipe length between Outdoor Units Gas pipe Liquid pipe High Low Pressure Common pipe 12 Always insulate the piping properly Insufficient insulation will result in a decline in heating cooling perfor mance drip of condensate and other such problems 13 When connecting the refrigerant piping make sure the service valves of the Outdoor...

Page 29: ...r first branch 1 Diameter of pipes between first branch and the last branch should be increased by one step except pipe diameter B C D is same as Diameter A Ø6 35 Ø 9 52 Ø 12 7 Ø 15 88 Ø 19 05 Ø 22 2 Ø 25 4 Ø 28 58 Ø 31 8 Ø 34 9 Ø 38 1 It is not necessary to size up 2 While calculating whole refrigerant pipe length pipe B C D length should be calculated twice A Bx2 Cx2 Dx2 a b c d e 1 000 m 3 Leng...

Page 30: ...CNN30 Connection branch pipe between Outdoor units ARCNN20 Piping length form outdoor branch to outdoor unit 10 m equivalent length max 13 m for 18 HP or more Additional Application To satisfy below condition to make 40 m 90 m of pipe length after first branch 1 Diameter of pipes between first branch and the last branch should be increased by one step except pipe diameter B C D is same as Diameter...

Page 31: ...gth A B C D e 150m 200 m A B C D e 175m 225 m Longest pipe length after 1st branch B C D e 40m 90 m Difference in height Outdoor Unit Indoor Unit H 100m Difference in height Indoor Unit Indoor Unit h 15m Difference in height Outdoor Unit Outdoor Unit h1 5m L l H h h1 Upward Outdoor Unit total capacity HP 5 Ø9 52 3 8 Ø15 88 5 8 6 8 Ø9 52 3 8 Ø19 05 3 4 10 Ø9 52 3 8 Ø22 2 7 8 12 16 Ø12 7 1 2 Ø28 58 ...

Page 32: ...cted Outdoor Unit 1st branch Indoor Units Sealed piping L 150m 40m H 100m 10m or less L 100m L 150m 40m Slave Master Slave Master 2 Outdoor Units Example 6 Indoor Units connected Outdoor Unit Header branch Indoor Units Sealing Connection branch pipe between Outdoor units ARCNN20 Header Method ...

Page 33: ...branch to be 0 5m that of header to be 1m calculation purpose Indoor Unit should be installed at lower position than the header Piping length from outdoor branch to outdoor unit 10m equivalent length max 13m for 18HP or more Branch pipe can not be used after header Branch pipe can not be used after header 3 Outdoor Units Example 6 Indoor Units connected Outdoor Unit Header branch Indoor Units Seal...

Page 34: ...der Sealed piping L 150m 40m L 100m Branch pipe can not be used after header Branch pipe can not be used after header Example 5 Indoor Units connected Outdoor Unit 1st branch Y branch Indoor Unit Connection branch pipe between Outdoor units ARCNN30 Connection branch pipe between Outdoor units ARCNN20 Header Sealed piping 10m or less H 100m L 150m 40m Master Master Slave Slave ...

Page 35: ...units ARCNN30 Connection branch pipe between Outdoor units ARCNN20 Header Sealing 10m or less H 100m L 150m 40m Master Slave2 Slave1 Branch pipe can not be used after header 3 Outdoor Units Example 5 Indoor Units connected Outdoor Unit 1st branch Y branch Y branch Indoor Unit Connection branch pipe between Outdoor units ARCNN30 Connection branch pipe between Outdoor units ARCNN20 Header Sealing 10...

Page 36: ...2 7 8 47 160 400 Ø12 7 1 2 Ø28 58 11 8 71 242 300 Ø15 88 5 8 Ø28 58 11 8 104 354 900 Ø19 05 3 4 Ø34 9 13 8 104 354 900 Ø19 05 3 4 Ø41 3 15 8 Liquid pipe mm inch Gas pipe mm inch Assume equivalent pipe length of Y branch to be 0 5m that of header to be 1m calculation purpose Indoor Unit should be installed at lower position than the header Upward Outdoor Unit total capacity HP 5 Ø0 52 3 8 Ø15 88 5 ...

Page 37: ...mity with downward indoor units Since the main pipe diameter of 22HP outdoor unit is Ø28 58 Gas pipe and Ø15 88 Liquid pipe Ø28 58 Gas pipe and Ø15 88 Liquid pipe is used as the main pipe and the connection pipe between 1st and 2nd branch WARNING When the equivalent length between the outdoor unit and a indoor unit is 90 m or more the size of main pipes Liquid pipe and Gas pipe must be increased o...

Page 38: ...Example of Pipe Connection between Outdoor 1 Pipe Connection between Outdoors Less than 10 m h1 Less than 2 m 2 In case pipe length between outdoors is less than 2m Differnce in height between outdoor units Less than 5m h1 5m Longest Pipe Length between Outdoors Less than 10m after 1st branch ...

Page 39: ...oor units Is 2 m or more prepare a oil trap 200 mm or more as shown below on the gas pipe line location Less than 2 m from branch 4 Example of wrong connection Less than 2m 2 m or more Less than 2 m 2 m or more Less than 2m 2 m or more Oil Trap 200 mm or more Oil Trap Oil Trap Oil is accumulating in outdoor units when system stops Oil is accumulating in lower level outdoor units when system stops ...

Page 40: ...c d e x 0 022 CF 40 x 0 061 20 x 0 061 20 x 0 061 10 x 5 x 0 022 0 CF 5 98 kg a ø6 35 10m b ø6 35 10m c ø6 35 10m d ø6 35 10m e ø6 35 10m Special condition In case of the No of CST TQ RAC SE ARTCOOL SF models are over than 50 of the connected indoor units when the total No of connected indoor units are over than 50 of the max connectable indoor units Additional refrigerant charging amount kg A x B...

Page 41: ...RNING Refer to model information since the CF Value of correction factor differs depending on model Total amount of refrigerant in the system 0 44 kg m3 Volume of the room at which Indoor Unit of the least capacity is installed Cooling Only Heat Pump Note Fill in the f gas Label attached on outdoor about the quantity of the fluorinated greenhouse gases Manufacturing site See Model Name label Insta...

Page 42: ...nsure that the branch pipes are attached vertically 3 The others Header Slave Master Slave Master 1st 1st 1st Main pipe Distribution 2nd 2nd 3rd Slave Master Slave Master Slave Master Slave Master 2nd Main pipe Distribution Slave Master 1st 3rd 3rd main pipe distribution 2nd Distribution Method ...

Page 43: ...rante original o ciclo do refrigerante pode apresentar anomalias ou a unidade pode ficar danificada Após seleccionar o diâmetro do tubo de refrigerante para se adequar à capacidade total da unidade interna ligada depois da ramificação use um tubo bifurcado adequado ao diâmetro do tubo da unidade interna e ao esquema de instalação do tubo 3 2 1 4 5 6 1 Tubagem do refrigerante 4 Isolante 2 Tubo a so...

Page 44: ...here is no limitation on the joint mounting configuration If the diameter of the refrigerant piping selected by the procedures described is different from the size of the joint the connecting section should be cut with a pipe cutter Branch pipe should be insulated with the insulator in each kit When the number of pipes to be connected is smaller than the number of header branches install a cap to ...

Page 45: ...hould be insulated with the insulator in each kit Joints between branch and pipe should be sealed with the tape included in each kit Any cap pipe should be insulated using the insulator provided with each kit and then taped as described above B Pinched pipe Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pipe...

Page 46: ...2 I D25 4 I D25 4 I D12 7 I D12 7 I D12 7 I D6 35 I D9 52 I D9 52 I D9 52 I D6 35 I D28 58 I D28 58 I D28 58 I D31 8 I D31 8 I D22 2 I D22 2 O D22 2 I D15 88 I D15 88 I D12 7 I D19 05 I D19 05 O D19 05 I D12 7 I D15 88 I D15 88 I D15 88 I D19 05 I D19 05 I D19 05 I D12 7 I D12 7 I D9 52 O D12 7 O D12 7 I D9 52 I D6 35 I D34 9 I D41 3 I D38 1 O D22 2 I D19 05 I D15 88 I D12 7 O D15 88 2 X I D41 3 O...

Page 47: ... 35 I D Ø9 52 I D Ø12 7 I D Ø6 35 O D Ø12 7 I D Ø9 52 I D Ø15 88 I D Ø12 7 I D Ø28 58 I D Ø19 05 I D Ø15 88 O D Ø28 58 I D Ø22 2 I D Ø25 4 I D Ø9 52 I D Ø6 35 I D Ø9 52 I D Ø12 7 I D Ø6 35 O D Ø12 7 I D Ø9 52 I D Ø15 88 I D Ø12 7 I D Ø28 58 I D Ø19 05 I D Ø15 88 O D Ø28 58 I D Ø22 2 I D Ø25 4 I D Ø9 52 I D Ø6 35 I D Ø9 52 I D Ø12 7 I D Ø6 35 O D Ø12 7 I D Ø9 52 I D Ø15 88 I D Ø15 88 I D Ø19 05 I D...

Page 48: ...high low pressure common pipe The test result can be judged good if the pressure has not be reduced after leaving for about one day after com pletion of nitrogen gas pressurization Note If the ambient temperature differs between the time when pressure is applied and when the pressure drop is checked apply the following correction factor There is a pressure change of approximately 0 1 kg cm2 0 01 M...

Page 49: ...t again with the vacuum pump for 1hr to 100 7kPa vacuum drying If the system cannot be evacuated to 100 7kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after maintaining the system in vacuum for 1 hr WARNING When installing and moving the air conditioner to another site recharge after perfect evacuation If a different refrige...

Page 50: ...main PCB DIP switch ON No 11 14 Vacuum mode setting ODU V V OPEN Main EEV SC EEV OPEN IDU EEV OPEN ODU power reset Press the black button Main PCB 5 sec Main PCB SW01S Main PCB SW02B Main PCB SW01V ODU operation stops during vacuum mode Compressor can t operate Vacuum mode setting method Vacuum mode cancellation method Master main PCB DIP switch OFF No 11 14 Power reset Vacuum mode cancellation Ca...

Page 51: ...g part of heat insulation material with a finishing tape Power lines E D D B A C Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat resistant polyethylene so that no gap is observed in the joint between indoor unit and insulating material and insulating materials themselves When insulation work is insufficient there is a...

Page 52: ...r technical standard related to electrical equipment wiring regulations and guidance of each electric power company 2 Install the Outdoor Unit communication line away from the power source wiring so that it is not affected by electric noise from the power source Do not run it through the same conduit 3 Be sure to provide designated grounding work to Outdoor Unit 4 Give some allowance to wiring for...

Page 53: ...ating Therefore never install a phase leading capacitor Make sure that the power unbalance ratio is not greater than 2 If it is greater the units lifespan will be reduced When none are available follow the instructions below Do not connect wiring of different thicknesses to the power terminal block Slack in the power wiring may cause abnormal heat When connecting wiring which is the same thickness...

Page 54: ...be connected between them When connecting communication line between out door unit and indoor units with shielded wire con nect the shield ground to the earth screw WARNING The temperature sensor for outdoor air should not be exposed to direct sunlight Provide an appropriate cover to intercept direct sunlight UY2 Chassis Inverter FAN PCB Main PCB Noise Filter Take care of the phase sequence of 3 p...

Page 55: ...ide Note 1 The figures are based on assumed length of parallel cabling up to 100m For length in excess of 100m the figures will have to be recalculated in direct proportion to the additional length of line involved 2 If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased If the lines are laid inside conduits then the following poi...

Page 56: ...ct each of indoor unit separately from the power supply WARNING Follow ordinance of your governmental organization for technical standard related to electrical equipment wiring reg ulations and guidance of each electric power company Make sure to use specified wires for connections so that no external force is imparted to terminal connections If con nections are not fixed firmly it may cause heati...

Page 57: ...onnection of Communication Cable 1 Outdoor Unit Half size WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main ...

Page 58: ...tion of Communication Cable 1 Outdoor Unit WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main switch that can...

Page 59: ...DU DRY1 DRY2 GND INTERNET B A 12V Master Outdoor unit IDU SODU DRY1 DRY2 GND INTERNET B B B B A A A A 12V Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Example Connection of Communication Cable 2 Outdoor Unit WARNING Indoor Unit ground Lines are required for preventing ...

Page 60: ...DU DRY1 DRY2 GND INTERNET B A 12V IDU SODU DRY1 DRY2 GND INTERNET B B B B A A A A 12V Master Outdoor unit Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Example Connection of Communication Cable 2 Outdoor Units WARNING Indoor Unit ground Lines are required for preventing...

Page 61: ...ODU DRY1 DRY2 GND INTERNET B A 12V IDU SODU DRY1 DRY2 GND INTERNET B A 12V IDU SODU DRY1 DRY2 GND INTERNET B B B B B A A A A A 12V Master Outdoor unit Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Example Connection of Communication Cable 3 Outdoor Units WARNING Indoor ...

Page 62: ...RY2 GND INTERNET B A 12V IDU SODU DRY1 DRY2 GND INTERNET B B B B B A A A A A 12V Master Outdoor unit Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Power supply 1 Phase 50Hz 220 240V Power supply switch Switch Pull Box Installer Option Example Connection of Communication Cable 3 Outdoor Units WARNING Indoor Unit ground Lines are required for preventing elec...

Page 63: ...nication Cable BUS type Connection of communication cable must be installed like below figure between indoor unit to out door unit STAR type Abnormal operation can be caused by communica tion defect when connection of communication cable is installed like below figure STAR type ...

Page 64: ...64 Outdoor Unit Electrical Wiring Location of setting Switch Main PCB SW01B DIP S W SW02B DIP S W 7 Segment SW02V Auto addressing SW01V Data confirm ...

Page 65: ... seconds after applying the power This number represents the setting condition For example represents R410A 30HP Master model code Slave1 model code Slave2 model code total capacity 2 25 150 1 255 Master model code 1 255 Slave1 model code 1 255 Slave2 model code 5 48HP HP number sum of master capacity and slave capacity No display cooling only 2 heat pump 25 normal 150 Model Type ARUN T2 ARUV T2 E...

Page 66: ... 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 ...

Page 67: ...3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pump Out 1 2 3 4 5 ...

Page 68: ...3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Unit Back Up SW01B Setting Inv Back Up Remarks SW02B Setting Function Unit Back Up SW01B Setting Inv Back Up Remarks SW02B Setting Function 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 ...

Page 69: ...2V Auto addressing SW01V Data confirm CAUTION In replacement of the indoor unit PCB always perform auto address setting again If power supply is not applied to the indoor unit operation error occurs Auto addressing is only possible on the main PCB Auto addressing has to be performed after 3 minutes to improve communication The Procedure of Automatic Addressing Auto addressing setting end Numbers o...

Page 70: ...d Indoor Unit number with a wired remote control To control several sets of Indoor Units into a group set the group ID from 0 to F for this purpose Terminal block on the main PCB SODU IDU INTERNET DRY1 DRY2 B A B D A C GND 12V B A B A Group recognizing the simple central controller No 0 group 00 0F No 1 group 10 1F No 2 group 20 2F No 3 group 30 3F No 4 group 40 4F No 5 group 50 5F No 6 group 60 6...

Page 71: ...installation and connection Connect wires as below figure at the hole of backside of Outdoor Unit Dry Contact Insert the wire in the connection hole pushing the Push button Setting Main PCB Dip SW of Master Outdoor Unit Mode Change Push Button Heating Outdoor Unit Fan Cooling ...

Page 72: ... main power supply and energizing the crankcase heater for more than 6 hours will cause the refrigerant to evaporate increasing the insulation resistance Check if high low pressure common pipe liquid pipe and gas pipe valves are fully opened NOTE Be sure to tighten caps Check if there are any problems in automatic addressing or not Check and confirm that there are no error messages in the display ...

Page 73: ... Low pressure error or discharge temper ature error Motor insulation broken Strainer clogged Oil leakage Motor insulation failure R S T misconnection Motor failure bad ventilation around outdoor heat exchanger Bad connector contact Coil failure EEV clogged EEV clogged Check resistance between terminals and chassis Change strainer Check oil amount after opening oil port Check resistance between ter...

Page 74: ... until 508 is displayed Judging sensor normality Error Display Refrigerant Auto Charging Main pcb LED Note 4 Press the black button on the main PCB for 2 sec Main PCB SW01V Press the black button for 2 sec after turning off all of dip S W Refrigerant Checking Press the black button until 608 is displayed Refrigerant Checking Don t Perform Sensor Checking No Yes Yes No Completed Note 1 Sensor check...

Page 75: ...Last number represents outdoor unit number 1 Master 2 Slave 1 3 Slave 2 4 Slave 3 Indoor unit number follows auto addressing number To check the LGMV Data ex Indoor unit No 2 Pipe inlet temperature sensor error ex Outdoor Master Unit Liquid pipe temperature sensor error 1 Outdoor Air Temperature 2 Heat Exchanger 1 Front side 3 Heat Exchanger 2 Rear side 4 Inverter Comp Discharge Temperature 5 Cons...

Page 76: ...r turning off all of dip S W Yes No Press the black button on main PCB Press until 508 is displayed Main PCB SW01V IDU runs with cooling mode In designated order Main PCB SW01V Press the black button IDU and ODU are turned off when Auto Charging is completed Close the valve Press the black button 1 Refrigerant Auto Charging Process Main PCB SW01V Completed 2 Note 1 After installing the refrigerant...

Page 77: ...e range Error will occur if temperature is out of range IDU 20 C 32 C ODU 0 C 43 C 2 For refrigerant charging use designated device only Capillary Assem Set 3 Set the IDU wired remote controller temperature sensing mode as IDU 4 Be careful that IDU should not be thermo off Error contents about auto refrigerant charging function 1 Temperature Range Error In case that IDU or ODU is out of range 2 Lo...

Page 78: ...r turning off all of dip S W Completed Press the black button on main PCB Press until 608 is displayed Main PCB SW01V IDU runs with cooling mode in order Main PCB SW01V Press the black button on main PCB Main PCB SW01V Note 1 IDU ODU are turned off Note Judging Refrigerant Amount Note 1 In case air temperature is out of guaranteed temperature refrigerant checking function may end without performin...

Page 79: ...system will be OFF 2 Excess of Refrigerant 619 After remove the 20 of calculated total refrigerant recharge the refrigerant by using Refrigerant Auto Charging Function 3 Scarcity of Refrigerant 629 Charge the refrigerant by using Refrigerant Auto Charging Function 4 Impossible to Judge 639 IF the system is not in order check the other problem except refrigerant CAUTION 1 Guaranteed Temperature ran...

Page 80: ...mp sensing the fan max RPM is operated setting RPM Night silent operation end 9 hours after Night silent operation is started the function should be stopped automatically Main PCB Power Reset Setting the Fan Max RPM Setting Complete Dip S W No 12 14 ON Master ODU SW01S Master ODU SW01B SW01V SW02V Note 1 Max RPM setting method Example of Max RPM Setting 1 time 1 time 1 time 1 time 1 time 1 time 1 ...

Page 81: ...ch ON No 11 14 Vacuum mode setting ODU V V OPEN Main EEV SC EEV OPEN IDU EEV OPEN ODU power reset Press the black button Main PCB 5 sec Main PCB SW01S Main PCB SW02B Main PCB SW01V ODU operation stops during vacuum mode Compressor can t operate Vacuum mode setting method Vacuum mode cancellation method Master main PCB DIP switch OFF No 11 14 Power reset Vacuum mode cancellation Power Reset DIP swi...

Page 82: ...r Compressor IPM Fault Slave2 Outdoor Unit Inverter Compressor IPM Fault Slave3 Outdoor Unit Inverter Compressor IPM Fault Inverter Board Input Over Current RMS of Master Outdoor Unit Inverter Board Input Over Current RMS of Slave1 Outdoor Unit Inverter Board Input Over Current RMS of Slave2 Outdoor Unit Inverter Board Input Over Current RMS of Slave3 Outdoor Unit Air temperature sensor of indoor ...

Page 83: ...nit DC Voltage Over Charging Master Outdoor Unit Inverter Compressor Fault OR Drive Fault Slave1 Outdoor Unit Inverter Compressor Fault OR Drive Fault Slave2 Outdoor Unit Inverter Compressor Fault OR Drive Fault Slave3 Outdoor Unit Inverter Compressor Fault OR Drive Fault Master Outdoor Unit Inverter Compressor DC link Low Voltage Slave1 Outdoor Unit Inverter Compressor DC link Low Voltage Slave2 ...

Page 84: ...igh Discharge Temperature System is turned off by Slave1 Outdoor Unit Inverter Compressor High Discharge Temperature System is turned off by Slave2 Outdoor Unit Inverter Compressor High Discharge Temperature System is turned off by Slave3 Outdoor Unit Inverter Compressor High Discharge Temperature System is turned off by Master Outdoor Uunit Constant Speed High Discharge Temperature System is turn...

Page 85: ...Pressure Sensor open or short Slave1 Outdoor Unit High Pressure Sensor open or short Slave2 Outdoor Unit High Pressure Sensor open or short Slave3 Outdoor Unit High Pressure Sensor open or short Master Outdoor Unit Air Temperature Sensor open or short Slave1 Outdoor Unit Air Temperature Sensor open or short Slave2 Outdoor Unit Air Temperature Sensor open or short Slave3 Outdoor Unit Air Temperatur...

Page 86: ...at Exchanger Temperature Sensor Rear side open or short Slave3 Outdoor Unit Heat Exchanger Temperature Sensor Rear side open or short Master Outdoor Unit Heat Exchanger Temperature Sensor Front side Fault Slave1 Outdoor Unit Heat Exchanger Temperature Sensor Front side Fault Slave2 Outdoor Unit Heat Exchanger Temperature Sensor Front side Fault Slave3 Outdoor Unit Heat Exchanger Temperature Sensor...

Page 87: ...nit Access Error of Inverter PCB of Slave3 Outdoor Unit Restriction of Master Outdoor Unit Restriction of Slave1 Outdoor Unit Restriction of Slave2 Outdoor Unit Restriction of Slave3 Outdoor Unit Omitting connection of R S T power of Master Outdoor Unit Omitting connection of R S T power of Slave1 Outdoor Unit Omitting connection of R S T power of Slave2 Outdoor Unit Omitting connection of R S T p...

Page 88: ...Voltage Error Slave2 Outdoor Unit Fan DC Link High Voltage Error Slave3 Outdoor Unit Fan DC Link High Voltage Error Constant CT Sensor Error of Master Outdoor Unit Constant CT Sensor Error of Slave1 Outdoor Unit Constant CT Sensor Error of Slave2 Outdoor Unit Constant CT Sensor Error of Slave3 Outdoor Unit PFC CT Sensor Error of Master Outdoor Unit PFC CT Sensor Error of Slave1 Outdoor Unit PFC CT...

Page 89: ...ting EEPROM Communication Fail Between Slave1 Outdoor Unit Fan MICOM and EEPROM or omitting EEPROM Communication Fail Between Slave2 Outdoor Unit Fan MICOM and EEPROM or omitting EEPROM Communication Fail Between Slave3 Outdoor Unit Fan MICOM and EEPROM or omitting EEPROM Master Outdoor Unit Fan Over Current Error Slave1 Outdoor Unit Fan Over Current Error Slave2 Outdoor Unit Fan Over Current Erro...

Page 90: ...an IPM Master Outdoor Unit Fan DC Link Input Voltage is under 380V Slave1 Outdoor Unit Fan DC Link Input Voltage is under 380V Slave2 Outdoor Unit Fan DC Link Input Voltage is under 380V Slave3 Outdoor Uni Fan DC Link Input Voltage is under 380V Liquid pipe temperature sensor of Master Outdoor Unit is open or short Liquid pipe temperature sensor of slave1 Outdoor Unit is open or short Liquid pipe ...

Page 91: ... is Over 95 C Slave3 Outdoor Unit Fan Inverter PCB Temperature is Over 95 C Master Outdoor Unit Subcooling Inlet Temperature Sensor Error Slave1 Outdoor Unit Subcooling Inlet Temperature Sensor Error Slave2 Outdoor Unit Subcooling Inlet Temperature Sensor Error Slave3 Outdoor Unit Subcooling Inlet Temperature Sensor Error Master Outdoor Unit Subcooling Outlet Temperature Sensor Error Slave1 Outdoo...

Page 92: ...emperature Sensor open or short Slave3 Outdoor Unit Fan PCB Heat Sink Temperature Sensor open or short Master Outdoor Unit Fan PCB Heat Sink Temperature Sensor Error Slave1 Outdoor Unit Fan PCB Heat Sink Temperature Sensor Error Slave2 Outdoor Unit Fan PCB Heat Sink Temperature Sensor Error Slave3 Outdoor Unit Fan PCB Heat Sink Temperature Sensor Error Display Title Cause of Error 1 2 1 9 4 3 4 Ou...

Page 93: ... procedure of limiting concentration Limiting concentration is the limit of Freon gas concentration where immediate measures can be taken with out hurting human body when refrigerant leaks in the air The limiting concentration shall be described in the unit of kg m3 Freon gas weight per unit air volume for facilitating calculation Limiting concentration 0 3kg m3 R410A Outdoor unit No 1 system Flow...

Page 94: ... with mechanical ventilator Reducing the outdoor refrigerant qty Pay a special attention to the place such as a basement etc where refrigerant can stay since refrigerant is heavier than air Outdoor unit Indoor unit Smallest room R410A Refrigerant concentration kg m3 Total amount of replenished refrigerant in refrigerant facility kg Capacity of smallest room where indoor unit is installed m3 In cas...

Page 95: ...ide line in the seaside installation please contact LG Electronics for the additional anticorrosion treatment 2 Periodic more than once year cleaning of the dust or salt particles stuck on the heat exchanger by using water Selecting the location Outdoor Unit 1 If the outdoor unit is to be installed close to the seaside direct exposure to the sea wind should be avoided Install the outdoor unit on t...

Page 96: ...P No MFL46912301 Printed in Korea After reading this manual keep it in a place easily accessible to the user for future reference ...

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