LG ARUB290DT2 Installation Manual Download Page 58

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Outdoor Unit

Electrical Wiring

◆

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).

HR unit

Summary of Contents for ARUB290DT2

Page 1: ...ase 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 R410A ENGLISH FRANÇAIS ESPAÑOL ...

Page 2: ...late any tubing run inside a room to prevent sweating that can cause dripping and water damage to wall and floors in moist or uneven locatinons Use a raised concrete pad or concrete blocks provide a solid level foundation for the outdoor unit This prevents water damage and abnormal vibration in an area with high winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a sui...

Page 3: ...tallation Process 8 Outdoor units Information 9 Environment friendly Alternative Refrigerant R410A 12 Select the Best Location 12 Installation Space 13 Lifting method 17 Installation 18 Refrigerant piping installation 20 Electrical Wiring 47 Test Run 69 Caution For Refrigerant Leak 87 Installation guide at the seaside 89 ENGLISH ...

Page 4: ...lt 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 contact...

Page 5: ...stalling 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 ...

Page 6: ...he 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 product malfu...

Page 7: ...g so may 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 par...

Page 8: ...ings Indicate clearly who 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 cei...

Page 9: ...necting Pipes Liquid Pipes mm inch Gas Pipes mm inch 2 Outdoor Units 18 20 22 24 14 5 16 0 17 5 19 0 ARUN173DT2 ARUN192DT2 ARUN211DT2 ARUN230DT2 ARUN096DT2 ARUN115DT2 ARUN134DT2 ARUN154DT2 ARUN076DT2 ARUN076DT2 ARUN076DT2 ARUN076DT2 8 8 17 6 17 6 8 8 17 6 17 6 8 8 17 6 17 6 8 8 17 6 17 6 1 2 2 0 0 1 2 2 2 4 4 29 32 35 39 285 240 285 240 285 240 285 240 628 529 628 529 628 529 628 529 1 280x1 607x7...

Page 10: ... 42 44 46 48 33 5 35 0 36 5 38 0 ARUN410DT2 ARUN430DT2 ARUN450DT2 ARUN470DT2 ARUN154DT2 ARUN154DT2 ARUN154DT2 ARUN154DT2 ARUN154DT2 ARUN154DT2 ARUN154DT2 ARUN154DT2 ARUN096DT2 ARUN115DT2 ARUN134DT2 ARUN154DT2 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 6 13 2 7 15 4 8 17 6 9 19 8 64 64 64 64 285x3 285x3 285x3 285x3 628x3 628x3 628x3 628x3 1280x1607x730 x3 12...

Page 11: ...necting Pipes Liquid Pipes mm inch Gas Pipes mm inch 3 Outdoor Unit 26 28 30 32 20 5 22 5 24 0 25 5 ARUN250BT2 ARUN270BT2 ARUB290DT2 ARUB310DT2 ARUN096BT2 ARUN096BT2 ARUN096BT2 ARUN115BT2 ARUN076BT2 ARUN096BT2 ARUN096BT2 ARUN096BT2 ARUN076BT2 ARUN076BT2 ARUN096BT2 ARUN096BT2 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 2 4 4 1 2 2 0 0 1 2 2 42 45 49 52 285 28...

Page 12: ...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 higher o...

Page 13: ... Front Side Rear Side B A B Front Side Rear Side Side view Top view 915mm 36 inches or more Control box is open close type 250mm 9 13 16 inch or more Top discharge open in principle Front inlet open in principle Rear inlet open in principle A B C D E A B C 915mm 36 inches or more Control box is open close type 250mm 9 13 16 inch or more 150mm 5 7 8 inch from the wall A B 250mm 9 13 16 inch or more...

Page 14: ...ront view E D F Side view Air guide 587 6 23 1 8 587 6 23 1 8 587 6 23 1 8 372 5 14 11 16 390 15 3 8 125 4 15 16 723 5 28 1 2 A B C Front view C When unit is surrounded by walls 915mm 36 inches or more Control box is of a open close type 250mm 9 13 16 inch 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 When there is an obstruction above the unit ...

Page 15: ...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 D D D D D D Front Side Rear Side Front...

Page 16: ...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 more than...

Page 17: ...s more than 20 kg 44 lbs PP bands are used to pack some products Do not use them 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 U...

Page 18: ... 10 3 8 383 15 1 16 10 3 8 383 15 1 16 700 2 27 9 16 1 16 900 2 35 7 16 1 16 900 2 35 7 16 1 16 900 2 35 7 16 1 16 UW1 UW1 UW1 383 15 1 16 383 15 1 16 700 2 27 9 16 1 16 900 2 35 7 16 1 16 900 2 35 7 16 1 16 900 2 35 7 16 1 16 UW1 UW1 UW1 10 3 8 10 3 8 383 15 1 16 383 15 1 16 900 2 35 7 16 1 16 900 2 35 7 16 1 16 900 2 35 7 16 1 16 UW1 UW1 UW1 10 3 8 10 3 8 150 533 20 15 16 UW1 900mm 35 7 16 inch ...

Page 19: ...nsure that anti vibration may be done in a wide area Pipe and wiring space in case of piping and wiring on the floor surface H Beam support Concrete base support G 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 earthq...

Page 20: ...ogen blow into the service valve port Releasing pressure 0 29 psi 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 r...

Page 21: ... 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 s...

Page 22: ... direction of arrow Within 10 Unit mm inch Main pipe Slave1 outdoor unit Master outdoor Ø 12 7 1 2 Ø 9 52 3 8 Ø 12 7 1 2 Ø 12 7 1 2 Ø 15 88 5 8 Ø 19 05 3 4 Ø 12 712 7 1 2 Ø 19 05 3 4 Ø 12 7 1 2 Ø 15 88 5 8 Ø 22 2 7 8 Ø 19 05 3 4 Slave1 outdoor gas pipe Ø 31 8 1 1 4 Ø 28 58 1 1 8 Ø 28 58 1 1 8 Ø 19 05 3 4 Ø 22 2 7 8 Ø 28 58 1 1 8 Main pipe Ø 34 9 1 3 8 Don t cut the pipe less than 70mm 2 3 4inch Bl...

Page 23: ... by 9 The Multi V will stop due to an abnormality like excessive or insufficient refrigerant At such a time always properly charge the unit When servicing always check the notes concerning both the piping length and the amount of additional refrigerant 10 Never use refrigerant to perform an air purge Always evacuate using a vacuum pump 11 Always insulate the piping properly Insufficient insulation...

Page 24: ...ts Unit mm inch Product length 10 0 4 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 Outdo...

Page 25: ...90m 295ft Conditional application 100m 328ft L150m 492ft 200m 656ft Conditional application 15m 49ft Master Slave 10m 32 8ft or less l 40m 131ft 90m 295ft Conditional application 100m 328ft L150m 492ft 200m 656ft Conditional application 15m 49ft 2 Outdoor Units Example 5 Indoor Units connected Outdoor Unit 1st branch Y branch Indoor Units Downward Indoor Unit Connection branch pipe between Outdoor...

Page 26: ...h 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 3 281 ft 3 Length of pipe from each indoor unit to the closest branch a b c d e 40m 131ft 4 Length of pipe from outdoor unit to the farthest indoor unit 5 A B C D e Length of pipe outdoor unit to the closest indoor unit 1 A a 40m 131ft 10m ...

Page 27: ...f header to be 1m 3 3ft calculation purpose To apply Conditional Application Downward Indoor Unit total capacity kW Btu h 22 4 76 400 Ø9 52 3 8 Ø19 05 3 4 33 112 600 Ø9 52 3 8 Ø22 2 7 8 47 160 400 Ø12 7 1 2 Ø28 58 1 1 8 71 242 300 Ø15 88 5 8 Ø28 58 1 1 8 104 354 900 Ø19 05 3 4 Ø34 9 1 3 8 104 354 900 Ø19 05 3 4 Ø41 3 1 5 8 Liquid pipe mm inch Gas pipe mm inch Upward Outdoor Unit total capacity HP ...

Page 28: ...L 150m 492ft 40m 131ft H 100m 328ft 15m 49ft 10m 32 8ft or less H 100m 328ft L 150m 492ft 40m 131ft Slave Master 15m 49ft 2 Outdoor Units Example 6 Indoor Units connected Outdoor Unit Header branch Indoor Units Sealing Connection branch pipe between Outdoor units ARCNN20 Header Method Refrigerant piping installation ...

Page 29: ...es connected to the Indoor Units is minimized Performance difference between Indoor Units may occur Assume equivalent piping length of Y branch to be 0 5m 1 6ft that of header to be 1m 3 3ft calculation pur pose Indoor Unit should be installed at lower position than the header Piping length from outdoor branch to outdoor unit 10m 32 8ft equivalent length max 13m 42 6ft for 18HP or more Branch pipe...

Page 30: ...e between Outdoor units ARCNN20 Header Sealed piping 10m 32 8ft or less H 100m 328ft L 150m 492ft 40m 131ft Master Slave h 15m 49ft Combination of Y branch header method Refrigerant piping installation 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 C...

Page 31: ...d pipe mm inch Gas pipe mm inch Assume equivalent pipe length of Y branch to be 0 5m 1 6ft that of header to be 1m 3 3ft calculation purpose Indoor Unit should be installed at lower position than the header WARNING It is recommended that difference of piping length for pipes connected to the Indoor Unit is minimized Performance difference between Indoor Units may occur Upward Outdoor Unit total ca...

Page 32: ...ng the indoor units to the 22 HP 61 5 kW outdoor unit to 120 of its system capacity 73 8 kW and branching 7k 2 2kW indoor unit at the 1st branch Main pipe diameter 22 HP outdoor unit Ø28 58 1 1 8 inch Gas pipe Ø15 88 5 8 inch Liquid pipe Pipe diameter between 1st and 2nd branch 71 7kW indoor units Ø34 9 1 3 8 inch Gas pipe Ø19 05 3 4 inch Liquid pipe in conformity with downward indoor units Since ...

Page 33: ...2 7 8 inch 10HP Ø22 2 7 8 inch Ø25 4 1 inch 12 14HP Ø28 58 1 1 8 inch Not increased 16 18 20 22HP Ø28 58 1 1 8 inch Ø31 8 1 1 4 inch 24HP Ø34 9 1 3 8 inch Not increased 26 28 30 32HP Ø34 9 1 3 8 Ø38 1 1 1 2 inch Liquid pipe 8 10HP Ø9 52 3 8 inch Ø12 7 1 2 inch 12 14 16HP Ø12 7 1 2 inch Ø15 88 5 8 inch 18 20 22 24HP Ø15 88 5 8 inch Ø19 05 3 4 inch 26 28 30 32 Ø19 05 3 4 inch Ø22 2 7 8 inch Indoor U...

Page 34: ... case pipe length between outdoors is less than 2m 6 6ft Differnce in height between outdoor units Less than 5m 16ft h1 5m 16ft Longest Pipe Length between Outdoors Less than 10m 32 8ft after 1st branch CAUTION Apply oil trap between outdoor unit installed Higher level and outdoor unit installed lower level Oil may be accumulated in stopped outdoor unit Refrigerant piping installation ...

Page 35: ...nits Is 2 m 6 6ft or more prepare a oil trap 200 mm 0 7ft or more as shown below on the gas pipe line location Less than 2 m 6 6ft from branch 4 Example of wrong connection Less than 2m 6 6ft 2m 6 6ft or more Less than 2m 6 6ft 2m 6 6ft or more Oil Trap 200mm 0 7ft or more Oil Trap Oil is accumulating in outdoor units when system stops Oil is accumulating in lower level outdoor units when system s...

Page 36: ... B 0 041 C 0 041 a b c d e 0 015 CF 40 0 041 20 0 041 65 6 0 041 32 8 5 0 015 0 CF 7 61 lb a ø6 35 1 4 10m 32 8ft b ø6 35 1 4 10m 32 8ft c ø6 35 1 4 10m 32 8ft d ø6 35 1 4 10m 32 8ft e ø6 35 1 4 10m 32 8ft 36 Outdoor Unit 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...

Page 37: ...6 17 6 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 8 8 8 17 6 17 6 17 6 24 26 28 30 32 34 36 2 4 4 2 4 4 1 2 2 0 0 1 2 2 2 4 4 3 6 6 WARNING Regulation for refrigerant leakage the amount of refrigerant leakage should satisfy the following equation for human safety If the above equation can not be satisfied then follow the following steps Selection of air conditioning system select one of the next 1 ...

Page 38: ...bution Ensure 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 39: ... below There 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...

Page 40: ...should 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 pip...

Page 41: ... D31 8 1 1 4 I D31 8 1 1 4 I D22 2 7 8 I D22 2 7 8 O D22 2 7 8 I D15 88 5 8 I D15 88 5 8 I D12 7 1 2 I D19 05 3 4 I D19 05 3 4 O D19 05 3 4 I D12 7 1 2 I D15 88 5 8 I D15 88 5 8 I D15 88 5 8 I D19 05 3 4 I D19 05 3 4 I D19 05 3 4 I D12 7 1 2 I D12 7 1 2 I D9 52 3 8 O D12 7 1 2 O D12 7 1 2 I D9 52 3 8 I D6 35 1 4 I D34 9 1 3 8 I D41 3 1 5 8 I D38 1 1 1 2 O D22 2 7 8 I D19 05 3 4 I D15 88 5 8 I D41 ...

Page 42: ...I D Ø6 35 1 4 O D Ø12 7 1 2 I D Ø9 52 3 8 I D Ø15 88 5 8 I D Ø12 7 1 2 I D Ø28 58 1 1 8 I D Ø19 05 3 4 I D Ø15 88 5 8 O D Ø28 58 1 1 8 I D Ø22 2 7 8 I D Ø25 4 1 I D Ø9 52 3 8 I D Ø6 35 1 4 I D Ø9 52 3 8 I D Ø12 7 1 2 I D Ø6 35 1 4 O D Ø12 7 1 2 I D Ø9 52 3 8 I D Ø15 88 5 8 I D Ø12 7 1 2 I D Ø28 58 1 1 8 I D Ø19 05 3 4 I D Ø15 88 5 8 O D Ø28 58 1 1 8 I D Ø22 2 7 8 I D Ø25 4 1 I D Ø9 52 3 8 I D Ø6 3...

Page 43: ...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 1MPa 14 5 psi for each 1 C 33 8 F of temperature difference Correction Temp...

Page 44: ...with nitrogen gas and then evacuate it again with the vacuum pump for 1hr to 100 7kPa vacuum drying If the system cannot be evacuated to 14 6 psi 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 perf...

Page 45: ...Master 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 cancella...

Page 46: ...t 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 poss...

Page 47: ...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 electrical part box of Indoor and Outdoor Units because the box is some times removed at the time of servic...

Page 48: ...ler Indoor Unit Outdoor Unit Outdoor Unit Outdoor Unit Outdoor Unit Indoor Unit Remote controller Remote controller Indoor Unit Indoor Unit Remote controller Remote controller Indoor Unit Indoor Unit Indoor Unit Indoor Unit 2 Core Shield Cable Multi Core Cable 2 Core Shield Cable Multi Core Cable 2 Core Shield Cable Multi Core Cable CAUTION Use the 2 core shield cables for communication lines Neve...

Page 49: ... 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 UW1 Chassis 460V Main PCB Magnet switch Onlybelow models ARUN115DT2 ARUN134DT2 ARUN154DT2 Inverter PCB Reactor Inv...

Page 50: ...re based on assumed length of parallel cabling up to 100m 328ft For length in excess of 100m 328ft 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 point must also...

Page 51: ...isconnect 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 caus...

Page 52: ... exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running the product in reversed phase may break the compressor and other parts 3 Phase 3 Wires Power supply 60Hz 460V Power supply switch Switch fuse ELCB 3 Phase 3 Wires Power line R S T Communication line 3 line Wir...

Page 53: ...Indoor and Master Outdoor unit IDU SODU DRY1 DRY2 GND 12V INTERNET B A B A Master Outdoor unit IDU SODU DRY1 DRY2 GND 12V INTERNET B A B A Master Outdoor unit IDU SODU DRY1 DRY2 GND 12V INTERNET B A B A 3 A 4 B 3 A 4 B 3 A 4 B Pull Box Installer Option Pull Box Installer Option 2 Outdoor Units 3Ø 460V WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during cur...

Page 54: ... Phase 60Hz 208 230V Power supply switch Switch Power supply switch Switch fuse ELCB 3 Phage 3 Wires Power supply 60Hz 460V Power supply 1 Phase 60Hz 208 230V When the power source is supplied to Each outdoor unit individually Main Switch Pull Box Installer Option Pull Box Installer Option 3 Outdoor Units 3Ø 460V WARNING Indoor Unit ground Lines are required for preventing electrical shock acciden...

Page 55: ... 3 A 4 B 3 A 4 B 1 Outdoor Unit 3Ø 208 230V 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 ca...

Page 56: ...Hz 208 230V Power supply 1 Phase 60Hz 208 230V Main Switch Master Slave When the power source is supplied to Each outdoor unit individually When the power source is connected In series between the units Pull Box Installer Option Pull Box Installer Option 2 Outdoor Units 3Ø 208 230V WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communi...

Page 57: ...ply 1 Phase 60Hz 208 230V Power supply switch Switch Power supply switch Switch fuse ELCB 3 Phase 3 Wires Power supply 60Hz 208 230V Power supply 1 Phase 60Hz 208 230V When the power source is supplied to Each outdoor unit individually Main Switch Pull Box Installer Option Pull Box Installer Option 3 Outdoor Units 3Ø 208 230V WARNING Indoor Unit ground Lines are required for preventing electrical ...

Page 58: ...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 HR unit HR unit HR unit HR unit ...

Page 59: ...original position with the screw WARNING Be sure to comply with local codes while running the wire from indoor unit to outdoor unit size of wire and wiring method etc Every wire must be connected firmly No wires should be allowed to touch refrigerant tubing the compressor or any moving parts T S R T S R Master unit Slave unit AC Power input AC Power input To indoor unit Outdoor unit connection SOD...

Page 60: ...2 1 2 Knockout Diameter inch 7 8 7 8 7 8 7 8 7 8 Model name ARUN173DT2 ARUN192DT2 ARUN211DT2 ARUN230DT2 ARUN250DT2 ARUN270DT2 ARUN290DT2 ARUN310DT2 AWG 12 12 12 10 8 8 6 6 Conduit inch 1 2 1 2 1 2 1 2 1 1 1 1 Knockout Diameter inch 7 8 7 8 7 8 7 8 1 23 64 1 23 64 1 23 64 1 23 64 Model name ARUN330DT2 ARUN350DT2 ARUN370DT2 ARUN390DT2 ARUN410DT2 ARUN430DT2 ARUN450DT2 ARUN470DT2 AWG 6 6 6 6 4 4 4 4 C...

Page 61: ...Installation Manual 61 ENGLISH Electrical Wiring Location of setting Switch Main PCB SW01B DIP S W SW02B DIP S W 7 Segment SW02V Auto addressing ...

Page 62: ... This Number represents the setting condition For example represents 3Ø 208 230V 20HP heat pump Master model code Slave1 model code total capacity 2 25 140 1 255 Master model code 1 255 Master model code 1 255 Master model code 5 48 HP HP number Sum of Master capacity and Slave capacity No display cooling only 2 Heat pump 3 Sync 25 Normal 140 3Ø 208 230V 160 3Ø 460V Example 3Ø 208 230V 20HP heat p...

Page 63: ... 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 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 ...

Page 64: ... 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 Night Low Noise Ni...

Page 65: ...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 Pump Out Inv Back Up Remarks SW02B Setting Function Unit Back Up SW01B Setting Pump Out 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 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7...

Page 66: ...g 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 of indoor unit connection set whose a...

Page 67: ...roup and 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 gro...

Page 68: ...llation 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 Mode Change Air circulation Cooling Back Heating Outdoor Unit Electrical Wiring ...

Page 69: ...g 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 of indoor units or remote controls and LED in outdoor units Checks Before Test Run CAUTION when cutting main power of the Mult...

Page 70: ...ror 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 terminals and chass...

Page 71: ... button 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 Senso...

Page 72: ...umber 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 3 Heat Exchanger 2 4 Inverter Comp Discharge Temperature 5 Const Speed Comp Discharge Temp...

Page 73: ...c after 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 refri...

Page 74: ...harging function 1 Temperature Range Error In case that IDU or ODU is out of range 2 Low Pressure Descent Error In case the system runs at low pressure limit for over 10 minutes 3 Judging rapid refrigerant inflow In case the liquid refrigerant flows in because of not using desig nated Capillary Assembly 4 Instability Error In case the high low pressure target doesn t get satisfied for some time af...

Page 75: ...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 76: ... 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 range Error occurs ou...

Page 77: ...power 3 If ODU RPM changes cooling capacity may go down Main PCB Power Reset Dip S W No 12 14 ON Master ODU SW01S Master ODU SW01B STEP 1 Max RPM 510 Black button 1 time red button 1 time STEP 2 Max RPM 450 Black button 2 times red button 1 time STEP 3 Max RPM 400 Black button 3 times red button 1 time Setting Complete SW01V SW02V 8 hours after max ODU temp sensing Operates with setting RPM 9 hour...

Page 78: ...o 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 switch set...

Page 79: ...mpressor IPM Fault Slave1 Outdoor Unit Inverter Compressor IPM Fault Slave2 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 Air temperature sensor of indoor unit is open or short Inlet pipe temperature sensor of indoor uni...

Page 80: ...Master Outdoor Unit Inverter Compressor High 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 Master Outdoor Unit Inverter Compressor DC link Low Voltage Slave1 Outdoor Unit Inverter Compressor DC link Low Voltage Slave2 Outdoor Unit Inverter Co...

Page 81: ...r Unit Low Pressure Sensor open or short Slave1 Outdoor Unit Low Pressure Sensor open or short Slave2 Outdoor Unit Low Pressure Sensor open or short Master Outdoor Unit High Pressure Sensor open or short Slave1 Outdoor Unit High Pressure Sensor open or short Slave2 Outdoor Unit High Pressure Sensor open or short Master Outdoor Unit Constant Speed Compressor High Discharge Temperature Slave1 Outdoo...

Page 82: ...ction of Slave1 Outdoor Unit Omitting connection of Slave2 Outdoor Unit Excessive connection of indoor units compared to capacity of Outdoor Unit Master Outdoor Unit Air Temperature Sensor Fault Slave1 Outdoor Unit Air Temperature Sensor Fault Slave2 Outdoor Unit Air Temperature Sensor Fault Master Outdoor Unit Heat Exchanger Temperature Sensor Front side Fault Slave1 Outdoor Unit Heat Exchanger T...

Page 83: ...of Master Outdoor Unit PFC Instant Over Current Peak of Slave1 Outdoor Unit PFC Instant Over Current Peak of Slave2 Outdoor Unit PFC Master Outdoor Unit R T Phase Difference is over 5A Slave1 Outdoor Unit R T Phase Difference is over 5A Slave2 Outdoor Unit R T Phase Difference is over 5A Communication error inverter PCB Main PCB Communication error inverter PCB Main PCB Communication error inverte...

Page 84: ...and EEPROM or omitting EEPROM Communication Fail Between Master Outdoor Unit Fan MICOM and EEPROM or omitting 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 Master Outdoor Unit Fan CT Sensor Error Slave1 Outdoor Unit Fan CT Sensor Error Slave2 Outdoor Unit Fan CT Se...

Page 85: ...t Pressure unbalance between Outdoor Units Pressure unbalance between Outdoor Units Pressure unbalance between Outdoor Units Communication Error Between Master Outdoor Unit and Other Outdoor Unit Communication Error Between Slave1 Outdoor Unit and Other Outdoor Unit Communication Error Between Slave2 Outdoor Unit and Other Outdoor Unit Master Outdoor Unit Fan PCB Communication Error Slave1 Outdoor...

Page 86: ...erature Sensor open or short Slave2 Outdoor Unit Fan PCB Heat Sink Temperature Sensor open or short Master Outdoor Unit Constant Speed Compressor Fault Slave1 Outdoor Unit Constant Speed Compressor Fault Slave2 Outdoor Unit Constant Speed Compressor Fault Excessive increase of Master Outdoor Unit Fan PCB Heat Sink Temperature Excessive increase of Slave1 Outdoor Unit Fan PCB Heat Sink Temperature ...

Page 87: ...ocedure 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 lb ft3 Freon gas weight per unit air volume for facilitating calculation Limiting concentration 0 028 lb ft3 R410A Outdoor unit No 1 system Fl...

Page 88: ...hanical 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 lb ft 3 Total amount of replenished refrigerant in refrigerant facility lb Capacity of smallest room where indoor unit is installed ft3 In case the ...

Page 89: ...e 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 the...

Page 90: ...90 Outdoor Unit ...

Page 91: ...P No MFL46912303 Printed in Korea After reading this manual keep it in a place easily accessible to the user for future reference ...

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