LG Multi V Installation Manual Download Page 101

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ENGLISH

Installation Manual

101

New Function

New Function

Multi V III provides as following new functions.

If you want to get more details, refer to each installation Manuals.

Out Feature

• Cool/ Heat Selector

• ODU Dry contact

New Function

Applied item

Cool/Heat selector (PRDSBM)

Cooling/ Heating/ Fan
Cooling/ Heating/ All OFF

ODU
Solution Accessory

ODU Dry contact (PQDSBDCVM0)

Demand control
-. Low load operation
-. DDC control (DC0~10V Input)

ODU
Solution Accessory

ODU Fan Low speed control
(Night low noise operation)

Error alarm

Summary of Contents for Multi V

Page 1: ...nstallation 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 your set and retain it for future reference P NO MFL67221404 www lg com MODELS ARUN Series ENGLISH FRANÇAIS ESPAÑOL ...

Page 2: ... support in a room Properly insulate 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...

Page 3: ...tion 9 Environment friendly Alternative Refrigerant R410A 14 Select the Best Location 15 Installation Space 16 Lifting method 18 Installation 19 Refrigerant piping installation 24 Pipe connections between indoor and outdoor unit 28 Electrical Wiring 54 Test Run 81 New Function 101 Caution For Refrigerant Leak 109 Installation guide at the seaside 111 ...

Page 4: ... 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 al ways contact a dealer or an ...

Page 5: ...liance There is risk of fire or electrical shock Be cautious that water could not enter the product There is risk of fire electric shock or product damage Do not touch the power switch with wet hands There is risk of fire electric shock explosion or injury When installing and moving the air condi tioner to another site do not charge it with a different refrigerant from the refrigerant specified on...

Page 6: ... 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 malfunction or inefficient operation n Operation Do not use the air conditioner in special environments Oil steam sulfuric smoke etc can significantly reduce the performance of the air cond...

Page 7: ...ing 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 p...

Page 8: ... 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 Run each indoor unit in turn to make sure t...

Page 9: ...15 88 5 8 15 88 5 8 28 58 1 1 8 28 58 1 1 8 28 58 1 1 8 Outdoor units Information n Heat pump n Combination Ration 50 130 Notes We can guarantee the operation only within 130 Combination Outdoor Number Connection Capacity Single outdoor unit 130 Double outdoor units 130 Triple outdoor units 130 Power Supply Outdoor Unit 3Ø 208 230V 60Hz Unit 1 Outdoor Unit System HP 8 10 12 Ton 6 8 10 Model ARUN07...

Page 10: ...N072BT3 ARUN144BT3 ARUN096BT3 ARUN121BT3 ARUN144BT3 ARUN144BT3 19 24 3 24 3 41 53 5 53 5 42 45 49 280 2 190 1 280 2 190 1 280 2 617 2 418 1 617 2 418 1 617 2 1 240 1 680 760 2 920 1 680 760 1 920 1 680 760 1 1 240 1 680 760 2 1 240 1 680 760 2 48 8 66 1 29 9 2 36 2 66 1 29 9 1 36 2 66 1 29 9 1 48 8 66 1 29 9 2 48 8 66 1 29 9 2 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 Unit 1 O...

Page 11: ...120DT3 5 5 9 4 9 4 12 1 20 7 20 7 13 16 20 190 x 1 270 1 270 1 418 x 1 595 1 595 1 920 1 680 760 1 1 240 1 680 760 1 1 240 1 680 760 1 36 2 66 1 29 9 1 48 8 66 1 29 9 1 48 8 66 1 29 9 1 9 52 3 8 9 52 3 8 12 7 1 2 19 05 3 4 22 2 7 8 28 58 1 1 8 Unit 1 Outdoor Unit 2 Outdoor Unit System HP 14 18 20 Ton 12 14 16 Model ARUN144DT3 ARUN168DT3 ARUN192DT3 ARUN144DT3 ARUN072DT3 ARUN072DT3 ARUN096DT3 ARUN12...

Page 12: ...53 5 Max Connectable No of Indoor Units 42 45 49 Net Weight kg 270 2 190 1 270 2 190 1 270 2 lbs 595 2 418 1 595 2 418 1 595 2 Dimensions WxHxD mm 1 240 1 680 760 2 920 1 680 760 1 1 240 1 680 760 2 920 1 680 760 1 1 240 1 680 760 2 inch 48 8 66 1 29 9 2 36 2 66 1 29 9 1 48 8 66 1 29 9 2 36 2 66 1 29 9 1 48 8 66 1 29 9 2 Connecting Pipes Liquid Pipes mm inch 19 05 3 4 19 05 3 4 19 05 3 4 Gas Pipes...

Page 13: ...Model Product Charge kg lbs Max Connectable No of Indoor Units Net Weight kg lbs Dimensions WxHxD mm inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inch 42 36 ARUN432DT3 ARUN144DT3 ARUN144DT3 ARUN144DT3 28 2 62 1 61 270 3 595 3 1 240 1 680 760 3 48 8 66 1 29 9 3 19 05 3 4 41 3 1 5 8 ...

Page 14: ...ing should comply with the relevant local and national regulations for the designed pressure 3 8MPa 551 1psi Since R410A is a mixed refrigerant the required additional refrigerant must be charged in its liquid state If the refrigerant is charged in its gaseous state its composition changes and the system will not work properly Do not place the refrigerant container under the direct rays of the sun...

Page 15: ...tallation in a place where acidic solution and spray sulfur are often used Do not use unit under any special environment where oil steam and sulfuric gas exist It is recommended to fence round the outdoor unit in order to prevent any person or animal from accessing the outdoor unit If installation site is area of heavy snowfall then the following directions should be observed Make the foundation a...

Page 16: ...s no limit to the wall on the side If the height of the walls on the front and the inlet are higher than the limit there must be additional space on the front and the side Additional Space on the inlet side by 1 2 of h1 Additional Space on the front side by 1 2 of h2 h2 A Actual height 59 1 16 h1 B Actual height 19 11 16 A 10 13 32 A 50 1 31 32 B 300 11 13 16 B 100 3 15 16 C 10 13 32 C 50 1 31 32 ...

Page 17: ...nction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the higher installation console by 500mm 19 11 16inch inch 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 100mm 3 15 16inch always remove snow for operation 1 The height of H ...

Page 18: ...ise 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 support may make Outdoor Unit unstable resulting in a fall Use 2 belts of at least 3m 26 2ft long Place extra cloth or ...

Page 19: ...hor bolts M10 must be inserted at least 75mm 2 15 16 inch At least 100mm At least 100mm At least 100mm At least 100mm At least 100mm Set up supports under center of the unit Center of the Unit At least 100mm At least 200mm The outdoor unit should not be supported only by the corner supports Set up supports under center of the unit Center of the Unit At least 200mm 730 28 3 4 760 29 29 32 65 2 9 16...

Page 20: ...iciently support the weight of the outdoor unit If the support strength is not enough the outdoor unit may drop and hurt people Install where the outdoor unit may not fall in strong wind or earthquake If there is a fault in the supporting conditions the outdoor unit may fall and hurt people Please take extra cautions on the supporting strength of the ground liquid outlet treatment treatment of the...

Page 21: ...ow models carry out flaring work using flaring tool as shown below Applicable Indoor unit models ARNU093TN 2 ARNU123TN 2 ARNU153TN 2 ARNU183TM 2 ARNU243TM 2 ARNU153BG 2 ARNU183BG 2 ARNU243BG 2 n Firmly hold copper tube in a bar or die as indicated di mension in the table above 4 Check n Compare the flared work with figure below n If flare is noted to be defective cut off the flared section and do ...

Page 22: ... flare shape Ø3 8 9 52 289 4 3270 353 1 3990 0 5 12 8 0 52 13 2 Ø1 2 12 7 438 1 4950 533 7 6030 0 64 16 2 0 65 16 6 Ø5 8 15 88 547 0 6180 667 3 7540 0 76 19 3 0 78 19 7 1 Remove the cap and turn the valve counter clockwise with the hexagon wrench 2 Turn it until the shaft stops Do not apply excessive force to the shutoff valve Doing so may break the valve body as the valve is not a backseat type A...

Page 23: ...ver if it is operated for a long time in high humid atmosphere dew point tempera ture more than 73 23 water drops are liable to fall In this case add heat insulation material accord ing to the following procedure EPDM Ethylene Propylene Diene Methylene NBR Nitrile Butadiene Rubber over 248 120 the heat resistance temperature Add the insulation over 10mm 13 32inch thickness at high humidity environ...

Page 24: ...e refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor unit Flare connec tion for the indoor unit and welding connection for the outdoor pipe and the branching parts Use hexagonal wrench to open close the valve h When connecting to high low pressure com mon pipe connect pipes using connecting elbows Detach knock outs according the usages Detach knock outs...

Page 25: ... 110 4 11 32 120 4 23 32 120 4 23 32 I D 22 2 7 8 I D 12 7 1 2 I D 12 7 1 2 I D 12 7 1 2 I D 12 7 1 2 I D 9 52 3 8 I D 41 3 1 5 8 70 2 3 4 83 3 9 32 334 13 5 32 281 11 1 16 83 3 9 32 Outdoor units Model Gas pipe Liquid pipe I D 9 52 3 8 O D 19 05 3 4 I D 15 88 5 8 O D 12 7 1 2 I D 12 7 1 2 I D 6 35 1 4 X2 110 4 11 32 110 4 11 32 I D 9 52 3 8 I D 22 2 7 8 I D 19 05 3 4 O D 28 58 1 1 8 I D 22 2 7 8 ...

Page 26: ...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 abnormality like excessive or insufficient refrigerant At such a time always properl...

Page 27: ...nd the in stallation pipe drawing 12 Always insulate the piping properly Insufficient insulation will result in a decline in heating cooling per formance drip of condensate and other such problems 13 When connecting the refrigerant piping make sure the service valves of the Outdoor Unit is completely closed the factory setting and do not operate it until the refrigerant piping for the Outdoor and ...

Page 28: ...alve Removal Area for common pipe bottom side connections Removal Area for Liquid Gas pipe bottom side connections 1 Open the front panel 2 Remove Brackets 3 Fix with only nut and washer as shown in the figure Brackets for Transportation Washer Nut Pipe connections between indoor and outdoor unit Preparation Work CAUTION Do not give damage to the pipe base during the Knock Out work Proceed to pipe...

Page 29: ...ipe cap provided into the common pipe 4 Place high low pressure flare nut cap under the pipe cap so that the pipe cap does not move 5 Weld the pipe cap h If not wrapped with a wet towel there may be damages in side the valve h If the unit is operated without pipe cap work there may be abnormality in the cycle caused by refrigerant leakage n Method of drawing out pipes on the front side Proceed wit...

Page 30: ...ipes on the bottom side Drawing out common pipe through side panel n Figure of Sides when drawing out through bottom pipe Drawing out common pipe through bottom pipe Remove Pipe Knock Out Hole i Single outdoor unit ii Series outdoor units Draw out common pipes through bottom iii Series outdoor units Draw out common pipes through side panel Pipe connections between indoor and outdoor unit ...

Page 31: ... outdoor unit 33ft 10m equivalent length max 43ft 13m for 12ton 14HP or more Additional Application To satisfy below condition to make 131ft 40m 295ft 90m 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 A Ø1 4 6 35mm Ø3 8 9 52mm Ø1 2 12 7mm Ø5 8 15 88mm Ø3 4 19 05mm Ø7 8 22...

Page 32: ...ow condition to make 131ft 40m 295ft 90m 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 A Ø1 4 6 35mm Ø3 8 9 52mm Ø1 2 12 7mm Ø5 8 15 88mm Ø3 4 19 05mm Ø7 8 22 2mm Ø1 25 4 Ø1 1 8 28 58mm Ø1 1 4 31 8mm Ø1 3 8 34 9mm Ø1 1 2 38 1mm It is not necessary to size up h If the step...

Page 33: ...oor Unit Indoor Unit H 361ft 110m Difference in height Indoor Unit Indoor Unit h 49ft 15m Difference in height Outdoor Unit Outdoor Unit h1 16 4ft 5m L l H h h1 WARNING If overall equivalent pipe length is greater than or equal to 295ft 90m from ODU to the longest IDU The diameter of the main pipe Gas and Liquid pipes must be increased as follow Ú Refrigerant pipe diameter from outdoor unit to fir...

Page 34: ...ealed piping L 656ft 200m 131ft 40m H 361ft 110m 49ft 15m 33ft 10m or less L 361ft 110m 49ft 15m L 656ft 200m 131ft 40m Slave Master Slave Master Slave Master ODU Capacity Master Slave 2 Outdoor Units Example 6 Indoor Units connected Ⓐ Outdoor Unit Ⓑ Header branch Ⓒ Indoor Units Ⓓ Sealing Ⓔ Connection branch pipe be tween Outdoor units ARCNN21 u Header Method ...

Page 35: ...ch Ⓒ Indoor Units Ⓓ Sealing Ⓔ Connection branch pipe between Outdoor units ARCNN31 Ⓕ Connection branch pipe between Outdoor units ARCNN21 33ft 10m or less H 361ft 110m 49ft 15m L 656ft 200m 131ft 40m Master Slave2 Slave1 ODU Capacity Master Slave1 Slave2 WARNING If overall equivalent pipe length is greater than or equal to 295ft 90m from ODU to the longest IDU The diameter of the main pipe Gas and...

Page 36: ...m Conditional application L 361ft 110m 49ft 15m Branch pipe can not be used after header Branch pipe can not be used after header 2 Outdoor Units Example 5 Indoor Units connected Ⓐ Outdoor Unit Ⓑ 1st branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Connection branch pipe be tween Outdoor units ARCNN21 Ⓕ Header Ⓖ Sealed piping 33ft 10m or less H 361ft 110m 49ft 15m Master Slave Master Slave Master Slave L 492ft 1...

Page 37: ...or Unit Ⓑ 1st branch Y branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Connection branch pipe be tween Outdoor units ARCNN31 Ⓕ Connection branch pipe be tween Outdoor units ARCNN21 Ⓖ Header Ⓗ Sealing 33ft 10m or less H 361ft 110m 49ft 15m Master Slave2 Slave1 F E F E ODU Capacity Master Slave1 Slave2 L 492ft 150m 656ft 200m Conditional application 131ft 40m 295ft 90m Conditional application ...

Page 38: ...13 8 100 8 344 000 Ø19 05 3 4 Ø34 9 13 8 173 6 592 500 Ø19 05 3 4 Ø41 3 15 8 184 8 630 700 Ø22 2 7 8 Ø44 5 13 4 224 0 764 400 Ø22 2 7 8 Ø53 98 2 Liquid pipe inch mm Gas pipe inch mm h If available on site it use this size Otherwise it can t be increased WARNING If overall equivalent pipe length is greater than or equal to 295ft 90m from ODU to the longest IDU The diameter of the main pipe Gas and ...

Page 39: ...n pipe from branch to branch exceed the main pipe diameter chosen by outdoor unit model name EX Where connecting the indoor units to the 22 HP 61 6kW outdoor unit to 120 of its system capacity 73 8 kW and branching 7k Btu h 2 2kW indoor unit at the 1st branch Main pipe diameter 22 HP outdoor unit Ø28 58 1 1 8 Gas pipe Ø15 88 5 8 Liquid pipe Pipe diameter between 1st and 2nd branch 71 7kW indoor un...

Page 40: ...ger 2m 6 6ft or longer 2m 6 6ft or longer If the distance between the outdoor units becomes more than 2m 6 6ft apply Oil Traps between the gas pipes If the outdoor unit is located lower than the main pipe apply Oil Trap If the main pipe is higher than the outdoor units oil is accumulated in the outdoor unit If there are differences in the height between the outdoor units oil is accumulated in the ...

Page 41: ...o gas pipe as shown below when the length of the pipe between the outdoor units is over 2m 6 6ft Otherwise the unit may not operate properly Toward indoor unit Example 1 Example 2 Example 3 Toward indoor unit Pipe inclination 2 or more Toward indoor unit Toward indoor unit Toward indoor unit Toward indoor unit Toward indoor unit Toward indoor unit 2m 6 6ft 2m 6 6ft 2m 6 6ft 0 2m 6 6ft Oil Trap Exa...

Page 42: ... to 5m 16 4ft When connecting the pipes between the outdoor units the accumulation of oil in the slave outdoor unit should be avoided Otherwise the unit may not operate properly Toward indoor unit Toward indoor unit Example 1 Example 2 Example 3 h h h 0 2m 6 6ft Toward indoor unit Toward indoor unit Toward indoor unit Oil Trap ...

Page 43: ...k 18k 24k 28k 36k 42k 48k 76k 96k Type Ceiling Concealed Duct Low Static Ceiling Concealed Duct High Static Wall Mounted 1Way Ceiling Cassette 2Way Ceiling Cassette 4Way Ceiling Cassette ARTCOOL Gallery Floor Standing Ceiling Floor Ceiling Suspended Console Fresh Air Intake Unit Heat recovery ventilator DX Hydro kit Vertical AHU 0 37 0 37 0 37 0 37 0 82 0 82 0 57 0 57 0 57 0 57 0 57 0 57 0 97 0 97...

Page 44: ...or building ventilation system Limitation in piping work Prepare for earthquake and thermal stress Total amount of refrigerant in the system 0 44 kg m3 0 028 lbs ft Volume of the room at which Indoor Unit of the least capacity is installed Add exact amount of refrigerant calculated by the installation pipe diameter length and the indoor combination If the refrigerant amount is not exact it may not...

Page 45: ...l Distribution 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 3rd Main pipe Distribution Slave Master 1st 3rd 3rd main pipe distribution 2nd Distribution Method ...

Page 46: ...elow 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 in stall a ...

Page 47: ... Header 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 br...

Page 48: ...1 3 1 5 8 I D41 3 1 5 8 I D38 1 1 1 2 I D38 1 1 1 2 I D38 1 1 1 2 O D38 1 1 1 2 O D15 88 5 8 1 2 2 3 3 2 2 3 3 2 3 3 3 376 14 13 16 404 15 29 32 120 4 23 32 120 4 23 32 120 4 23 32 120 4 23 32 90 3 17 32 90 3 17 32 I D15 88 5 8 I D15 88 5 8 2 3 1 2 1 3 3 41616 3 8 444 17 15 32 O 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 D19 05 3 4 I D19 05 3 4 I D19 05 3 4 I D19 05 3 4 I D19...

Page 49: ... 1 2 ID15 88 5 8 ID19 05 3 4 120 4 23 32 ID6 35 1 4 ID9 52 3 8 ID9 52 3 8 ID12 7 1 2 160 6 5 16 580 22 27 32 ID19 05 3 4 ID15 88 5 8 ID15 88 5 8 ID15 88 5 8 ID12 7 1 2 ID12 7 1 2 ID15 88 5 8 ID12 7 1 2 ID22 2 7 8 ID28 58 1 1 8 ID25 4 1 700 27 9 16 120 4 23 32 ID6 35 1 4 ID9 52 3 8 ID9 52 3 8 ID9 52 3 8 ID6 35 1 4 ID6 35 1 4 ID9 52 3 8 ID6 35 1 4 ID9 52 3 8 ID12 7 1 2 ID15 88 5 8 ID12 7 1 2 120 4 2...

Page 50: ...an be judged good if the pressure has not be reduced after leaving for about one day after completion 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 01Mpa 1 5psi for each 1 C of temperature difference Correction ...

Page 51: ...si vacuum break with nitrogen gas and then evacuate it again with the vacuum pump for 1hr to 100 7kPa 14 6psi vacuum dry ing If the system cannot be evacuated to 100 7kPa 14 6psi 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 or moving the air conditioner to ...

Page 52: ... only switch on 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 Vacuum mode setting method Vacuum mode cancellation method Master unit PCB DIP switch off Heat pump switch off 11 14 Cooling only switch off 11 14 Power reset Vacuum mode cancellation CAUTION ODU operation stops during vacuum mode Compressor can t operate D...

Page 53: ...cutting 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 ther...

Page 54: ...n for technical standard related to electrical equipment wiring regulations and guidance of each electric power company 2 Install the Outdoor Unit transmission 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 ...

Page 55: ...ng capacitor not only will deteriorate power factor improvement effect but also may cause capacitor abnormal heating 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 term...

Page 56: ...rew WARNING The temperature sensor for outdoor air should not be exposed to direct sunlight Provide an appropriate cover to intercept direct sunlight Front Panel UX3 UX2 Main PCB Fan PCB Noise filter Bridge diode Magnet switch Inverter PCB Take care of the phase sequence of 3 phase 3 wire power system Take care of the phase sequence of 3 phase 3 wire power system Main PCB Reactor Fan PCB Noise fil...

Page 57: ...ct 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 be taken into account when grouping various lines together for introduction into the conduits Power lines including power supply to air conditione...

Page 58: ...individual switch or electrical outlet to disconnect 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 co...

Page 59: ...ident 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 interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multipl...

Page 60: ...Wires Cable Power Line 2 Wires Cable Master Indoor Units Power supply 3 Phase 3 Wires 60Hz 208 230V Power Supply 1phase 60Hz 220 240V Main Switch Slave Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option R S T Switch Commu 2 W ommunication Line Cable 2 Pow 2 W Master y Hz 0V ption Pull Box aller...

Page 61: ...or 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 interrupt all the power sources in an integrated manner because this system consists of t...

Page 62: ...able Power Line 2 Wires Cable Power Line 2 Wires Cable Master Indoor Units Power supply 3 Phase 3 Wires 60Hz 208 230V Power supply 1 Phase 60Hz 220 240V Main Switch Slave1 Slave2 Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option ELCB ation Line Powe 2 Wire Powe 2 Wires Ca Power Line 2 Wires Ca...

Page 63: ...r 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 interrupt all the power sources in an integrated manner...

Page 64: ...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 interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the...

Page 65: ...ne 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Master Indoor Units Power Supply 3phase 3wires 60Hz 460V Power Supply 1phase 60Hz 220 240V Main Switch Slave Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option R S T Switch R S T Switch L N ELCB ELCB L N...

Page 66: ...enting 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 interrupt all the power sources in an integrated manner because this system consists of the equi...

Page 67: ...s Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Master Indoor Units Power supply 3 Phase 3 Wires 60Hz 460V Power supply 1 Phase 60Hz 220 240V Main Switch Slave1 Slave2 Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option R S T Switch R S...

Page 68: ...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 interrupt all the power sources in an integrated manner becaus...

Page 69: ...S type STAR type Connection of transmission cable must be in stalled like below figure between indoor unit to outdoor unit Abnormal operation can be caused by communi cation defect when connection of transmission cable is installed like below figure STAR type Electrical Wiring ...

Page 70: ...ound lines Over 50mm Gap Main Power Main Power Terminal Block Terminal Block Main Power Terminal Block Front Side 1 Main Power Terminal Block Insulation sleeves attachments Fix firmly not to be displaced Ground Cable Ground Cable Ground Cable ODU ODU Communication line ODU IDU Communication line Ground Cable ODU ODU ODU ODU Communication line Communication line ODU ODU Communication line Communica...

Page 71: ...erminal Block Front Side 1 Insulation sleeves attachments Insulation sleeves attachments Insulation sleeves attachments Ground Cable Ground Cable Ground Cable Fix firmly not to be displaced Main Power Terminal Block Main Power Terminal Block Main Power Terminal Block ODU ODU Communication line Insulation sleeves attachments Ground Cable Main Power Terminal Block ODU ODU ODU ODU Communication line ...

Page 72: ... 50mm Gap Main Power Terminal Block Main Power Main Power Terminal Block Terminal Block Main Power Terminal Block Front Side 1 Main Power Main Power Terminal Block Terminal Block Main Power Terminal Block Insulation sleeves attachments Fix firmly not to be displaced ODU ODU Communication line Ground Cable Ground Cable Ground Cable Main Power Terminal Block ODU IDU Communication line ODU ODU ODU OD...

Page 73: ...ck Main Power Terminal Block Ground Cable Power Ground lines Over 50mm Gap Communication line Main Power Terminal Block Front Side 1 Insulation sleeves attachments Ground Cable Fix firmly not to be displaced Main Power Terminal Block Main Power Terminal Block Main Power Terminal Block ODU ODU Communication line Main Power Terminal Block ODU ODU ODU ODU Communication line Communication line ODU ODU...

Page 74: ...74 Outdoor Unit Electrical Wiring Location of setting dip switch 7 Segment SW02V Auto Addressing SW01B SW02B n Heat Pump Main PCB ...

Page 75: ...fter applying the power This number represents the setting condition For example represents R410A 28HP Master model code Slave1 model code Slave2 model code total capacity 2 25 140 or 160 1 255 Master model code 1 255 Slave1 model code 1 255 Slave2 model code 1 255 Slave3 model code 8 42HP HP number sum of master capacity and slave capacity No display cooling only 2 heat pump 25 normal 140 or 160 ...

Page 76: ...y The changed setting will be enabled only when Power is reset or by pressing Reset button Index 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Heating capacity up IDU Fan RPM Control Auto charging ⅹ ⅹ Refrigerant Checking Function ⅹ Integrated test operation function Cooling ⅹ ⅹ Integrated test operation function Heating ⅹ Inverter backup Unit backup Non operation indoor unit EEV adjustment ⅹ ⅹ ⅹ ⅹ Indoor unit...

Page 77: ... completed are indicated for 30 seconds on 7 segment LED of the outdoor unit PCB 6 After completing addressing address of each indoor unit is indicated on the wired remote control display window CH00 CH01 CH02 CH06 Indicated as number of connected indoor units CAUTION In replacement of the indoor unit PCB always perform Auto addressing setting again At that time please check about using Independen...

Page 78: ...n wired remote control or indoor unit display window It is not an error message will disappeared when on off button is pressed on remote control ex Display of 01 02 15 means connection of 15 indoor units and auto addressing is completed normally Auto addressing start Waiting 3 minutes Power On Press RED Button for 5 sec H P SW02V 7 segment LED 88 Don t press RED Button H P SW02V Waiting about 2 7 ...

Page 79: ...To control several sets of Indoor Units into a group set the group ID from 0 to F for this purpose Example Group number setting 1st number indicate the group number 2nd number point out indoor unit number Heat Pump B D A C B A B SODU IDU INTERNET DRY1 DRY2 GND 12V A 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 grou...

Page 80: ...onnector Push Button Outdoor Dry Contact Back Side GND GND GND 1 2 3 4 1 2 3 4 Communication line length can be maximum 300m use communication line as thick as 1 25mm2 Without Cool Heat Selector Installation and Connection In case try to set mode without Cool Heat Selector and try to use other switch except from LG Outdoor Cool Heat Selector in field Connect signal terminal block as below figure a...

Page 81: ... on the 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 d...

Page 82: ...changer 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 chassis Check compressor R S T connection Check the outdoor fan operation after being turned the outdoor units off for some time Remove obstacles around the outdoor units Check connector Chec...

Page 83: ...lack button for 2 seconds Press black button for 5 seconds End Data Reset and Wait All DIP switches OFF and press black button for 2 seconds Setting 1 Setting 2 Setting 3 Setting 4 Refrigerant Auto Recharge Refrigerant Auto decide E Cooling F Heating Start Inspection of each Function Setting 1 Setting 2 Setting 3 Setting 4 Note 3 DIP Switch Settings Warning Please reset before starting this functi...

Page 84: ...for 2 sec after turning off all of dip S W Yes No IDU runs with cooling mode In designated order 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 Completed 2 DIP Switch Settings Warning Please reset Main PCB before starting this function Note 1 After installing the refrigerant charging devic...

Page 85: ...t of range IDU 20 C 68 F 32 C 90 F ODU 0 C 32 F 43 C 109 F This temperature range is specifically for accurate refrigerant charging and is irrelative of opera tion temperature range 2 For refrigerant charging use designated device only Capillary Assembly Set 3 Set the IDU wired remote controller temperature sensing mode as IDU 4 Be careful that IDU should not be thermo off n Error contents about a...

Page 86: ...quid pipe direct connection Based on Refrigerant Quantity NO NO YES YES Display Error Display Error Press black button for 2 seconds Press black button for 2 seconds Data Reset and Wait End Note 1 In case air temperature is out of guaranteed temperature refrigerant checking function may end without performing refrigerant checking Use guaranteed temperature range only 2 During the process of judgin...

Page 87: ...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 range Error occ...

Page 88: ...ed data can check using LGMV Note 1 Judge the normal condition refer to report of Test Running Thermo off IDU judge Start Temp Condition 1 IDU operation 1 IDU operation data 10min Refrigerant amount judge during all IDU operation data on Test Runing 15min Error Display Error Display Press the black button for 2 sec Yes No Note 1 End Press the black button for 2 sec after turning off all of Dip swi...

Page 89: ...de This function check only normal condition of parts on heating mode Saved data can check using LGMV Start Yes No Note 1 Note 1 Error Display End Completed Press the black button for 2 sec after turning off all of Dip switch Error Display 1 IDU operation 1 IDU operation data 10min All IDU operation data 10min Temp Condition Press the black button for 2 sec Note 1 Judge the normal condition refer ...

Page 90: ...5 12 9 8 6 5 10 5 12 5 620 780 680 800 900 Step Capacity Hp Capacity Fan Maximum RPM Judgment Time Hr Operation Time Hr 8 10 14 790 3 4 5 6 7 8 9 Reset the power Setting the Fan Max RPM Note 1 Setting Complete Set the DIP S W DIP Switch Settings Warning Please reset Main PCB before starting this function Step Black Button Red Button 1 1 time 1 time 2 2 time 1 time 3 3 time 1 time 4 4 time 1 time 5...

Page 91: ...ode Set the DIP S W ON 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 Vacuum mode setting method Vacuum mode cancellation method Set the DIP S W OFF Power reset Vacuum mode cancellation CAUTION ODU operation stops during vacuum mode DIP Switch Settings Warning Please reset Main PCB before starting this function ...

Page 92: ... high ESP 1 Standard ESP External Static Pressure 4mmH2O 39 2Pa 2 High ESP External Static Pressure 8mmH2O 78 4Pa The setting of dip S W is needed Refer to above operating method Power Reset Set the DIP S W ON Static pressure compensation mode setting method Static pressure compensation mode cancellation method DIP switch OFF Power Reset Static pressure compensation mode is set Static pressure com...

Page 93: ...f drain pump 0 5 Communication error outdoor unit in door unit Failing to receive outdoor unit signal in indoor unit PCB 0 6 Outlet pipe temperature sensor of indoor unit Outlet pipe temperature sensor of indoor unit is open or short 0 9 Indoor EEPROM Error In case when the serial number marked on EEPROM of In door unit is 0 or FFFFFF 1 0 Poor fan motor operation Disconnecting the fan motor connec...

Page 94: ...Master Outdoor Unit High Pres sure Switch Slave1 Outdoor Unit High Pres sure Switch Slave2 Outdoor Unit High Pres sure Switch Master Outdoor Unit Input Voltage High Low Voltage Slave1 Outdoor Unit Input Voltage High Low Voltage Slave2 Outdoor Unit Input Voltage High Low Voltage Master Outdoor Unit Inverter Com pressor Start Failure Slave1 Outdoor Unit Inverter Com pressor Start Failure Slave2 Outd...

Page 95: ...ure Slave1 Outdoor Unit Constant Speed Com pressor1 High Discharge Temperature Slave2 Outdoor Unit Constant Speed Com pressor1 High Discharge Temperature Display Title Cause of Error 1 3 3 2 3 Outdoor unit related error Master Outdoor Unit Inverter Compressor CT Sensor open or short Slave1 Outdoor Unit Inverter Compressor CT Sensor open or short Slave2 Outdoor Unit Inverter Compressor CT Sensor op...

Page 96: ...pen or short Master Outdoor Unit IPM Temperature Sensor short open Slave1 Outdoor Unit IPM Temperature Sensor short open Slave2 Outdoor Unit IPM Temperature Sensor short open Master Outdoor Unit Air Tempera ture Sensor Fault Slave1 Outdoor Unit Air Tempera ture Sensor Fault Slave2 Outdoor Unit Air Tempera ture Sensor Fault Master Outdoor Unit Heat Ex changer Temperature Sensor Front side Fault Sla...

Page 97: ...triction of Slave1 Outdoor Unit Restriction of Slave2 Outdoor Unit Constant1 CT Sensor open or short of Master Outdoor Unit Constant1 CT Sensor open or short of Slave1 Outdoor Unit Constant1 CT Sensor open or short of Slave2 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 O...

Page 98: ...C Link High Voltage Error Slave1 Outdoor Unit Fan DC Link High Voltage Error Slave2 Outdoor Unit Fan DC Link High Voltage Error Master Outdoor Unit Fan Current is over 10A Slave1 Outdoor Unit Fan is over 10A Slave2 Outdoor Unit Fan is over 10A Master Outdoor Unit Fan Over Current Error Slave1 Outdoor Unit Fan Over Current Error Slave2 Outdoor Unit Fan Over Current Error Master Outdoor Unit Fan Fir...

Page 99: ...et Temperature Sensor open or short Slave2 Outdoor Unit Subcooling Outlet Temperature Sensor open or short 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 ...

Page 100: ...it Main Board Main Sub Micom commu nication failed 2 Slave1 outdoor unit Main Board Main Sub Micom communication error Slave1 Outdoor Unit Main Board Main Sub Micom commu nication failed 3 Slave2 outdoor unit Main Board Main Sub Micom communication error Slave2 Outdoor Unit Main Board Main Sub Micom commu nication failed 1 9 3 1 Excessive increase of Master Outdoor Unit Fan PCB Heat Sink Temperatu...

Page 101: ...stallation Manuals n Out Feature Cool Heat Selector ODU Dry contact New Function Applied item Cool Heat selector PRDSBM Cooling Heating Fan Cooling Heating All OFF ODU Solution Accessory ODU Dry contact PQDSBDCVM0 Demand control Low load operation DDC control DC0 10V Input ODU Solution Accessory ODU Fan Low speed control Night low noise operation Error alarm ...

Page 102: ...Main PCB Insert wire method shows field wiring connected wiring Push arrow direction Insert wire to connector Push Button Outdoor Dry Contact Back Side GND GND GND 1 2 3 4 1 2 3 4 Communication line length can be maximum 300m use communication line as thick as 1 25mm2 Front Case Outdoor Dry Contact Main Body setting 1 Set DIP S W according to DIP S W setting table 5 6 11 12 2 Push Black button on ...

Page 103: ...door unit 3 SW_Address1 Switch to set a lower address of the outdoor unit 4 SW_STEP Switch to select a control mode 5 CN_PWR DC Input terminal 6 ERROR Error display with relay contact 7 BUS A RS 485 Terminal 8 BUS B RS 485 Terminal 9 CN_CAPACITY Signal input terminal to control a capacity of outdoor unit 10 CN_SPEED CAP Signal input terminal for Analog Input Low noise operation 11 CN_OUT Outdoor u...

Page 104: ...nit New Function 2 ODU Dry contact with Central controller With Single Outdoor unit With Series Outdoor units CN_OUT TTL Multi V WIRE ASSY 1 1EA BUS_B BUS_A Central Control Devices Multi V WIRE ASSY 1 1EA CN_OUT TTL ...

Page 105: ...s 1 Using Contact signal Without External power source With External power source Setting SW_STEP Input Signal 0 1 2 3 4 5 6 Contact signal D E Analog signal SW_STEP Using Contact signal Using Analog signal with DDC Module LG does not supply this section Field supply Notes Do not input the voltage signal in NON VOLT setting mode otherwise it will cause serious damage SW_VOLT2 SW_VOLT1 Input_3 Inpu...

Page 106: ...10V 9 8 7 6 5 4 3 2 1 1 1 Signal Input Step Performance output of the ODU Control Value Using Contact signal Rotary S W Volt Cooling Heating Step Control Step Control D 0 0 Not Control 0 Not Control 1 1 100 0 100 2 2 90 0 90 3 3 80 0 80 4 4 70 0 0 70 5 5 60 0 60 6 6 50 0 50 7 7 45 0 45 8 8 40 0 40 9 9 Comp OFF 0 Comp OFF 10 10 All OFF 0 All OFF Rotary S W Volt Cooling Heating Step Control Step Con...

Page 107: ... 0 0 1 COMP OFF 3 0 0 0 No control 1 0 0 70 0 1 0 40 0 0 1 ALL OFF 4 0 0 0 No control 1 0 0 70 0 1 0 50 0 0 1 ALL OFF 5 0 0 0 No control 1 0 0 80 0 1 0 50 0 0 1 ALL OFF 6 0 0 0 No control 1 0 0 50 0 1 0 COMP OFF 0 0 1 ALL OFF Using Analog signal with DDC Module Non Control 100 90 80 70 60 50 45 40 0V 1V 2V 3V 4V 5V 6V 7V 8V 9V 10V 0 1 2 3 4 5 6 7 8 9 10 Comp OFF System OFF Signal Input Step Perfor...

Page 108: ...as provided Error Alarm monitoring function Notice for system fault information by buzzer or warning lamp Occurring fault is not only ODUs but also IDUs Setting Note AC Power 3A 250V DC Power 3A 30V ON L1 2 3 4 Connect with S W or Timer for Night Low Noise Control Notes Default State is L1 ON L2 ON Position Function ON L1 2 3 4 ON Master Mode OFF Slave Mode ON L1 2 3 4 ON Enable Low Noise Operatio...

Page 109: ...ing 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 44kg m3 R410A Outdoor unit No 1 system ...

Page 110: ... 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 case the...

Page 111: ...corrosion treatment on the heat exchanger 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 opposite side of the sea wind direction 2 In case to install the outdoor unit on the seaside set up a windbreak not to be exposed to the sea wind 3 Select a well drained place It...

Page 112: ...112 Outdoor Unit ...

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Summary of Contents for Multi V

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LG Multi V, Installation Manual, Page: 101 / 113

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Summary of Contents for Multi V

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