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INSTALLATION MANUAL

AIR

CONDITIONER

www.lg.com

Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved.

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

Heat Pump
Original instruction

MFL67221438

Rev.00_092118

ENGLISH

ESP

AÑOL

POR

TUGUÊS

1,MFL67221438,영영  2018. 10. 4.  영영 11:29  Page 1

Summary of Contents for MULTI V 5 ARUN100BTE5

Page 1: ...efore 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 Heat Pump Original instruction MFL67221438 Rev 00_092118 ENGLISH ESPAÑOL PORTUGUÊS 1 MFL67221438 영영 2018 10 4 영영 11 29 Page 1 ...

Page 2: ...t refrigerant from the refrigerant speci fied 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 dam aged Do not reconstruct to change the settings of the protection devices If the pressure switch thermal switch or other protection device is shorted and operated forcibly or parts other than those speci fied...

Page 3: ...erminals Inadequate connection and fastening may generate heat and cause a fire Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure or personal injury Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual A bad connection may caus...

Page 4: ...ethods 11 REFRIGERANT PIPING INSTALLATION 11 Precautions on Pipe connection Valve operation 11 Connection of Outdoor units 11 Caution 12 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 12 Preparation Work 13 Pipe Drawing Out during Single Series connection 13 Refrigerant piping system 14 Pipe Connection Method between outdoor unit indoor unit 16 Branch pipe Fitting 18 Distribution Method 18 Vacuu...

Page 5: ...ressure refrigerant any unapproved pipe must not be used Do not heat pipes more than necessary to prevent them from softening Be careful not to install wrongly to minimize economic loss be cause it is expensive in comparison with R22 OUTDOOR UNITS INFORMATION The foundation must be level even Outdoor unit foundation work Avoid short circuits and ensure sufficient space is allowed for service Insta...

Page 6: ...B 500 19 11 16 C 50 1 31 32 D 500 19 11 16 E 100 3 15 16 F 900 35 7 16 A 10 13 32 B 500 19 11 16 C 10 13 32 D 500 19 11 16 E 20 25 32 F 1800 70 7 8 A 50 1 31 32 B 500 19 11 16 C 50 1 31 32 D 500 19 11 16 E 100 3 15 16 F 1200 47 1 4 Only 2 sides are walls A 10 13 32 B 300 11 13 16 A 10 13 32 B 300 11 13 16 E 20 25 32 500 19 11 16 D F E G 500 19 11 16 D H H F E G 500 19 11 16 D H F E I G 500 19 11 1...

Page 7: ...s under the unit and use the two suspension points each at the front and rear Always lift the unit with ropes attached at four points so that impact is not applied to the unit Attach the ropes to the unit at an angle of 40 or less Locking points for transportation ropes Forklift Carrying Guide Forklift Carrying Hole LIFTING METHOD CAUTION Be very careful while carrying the product Do not have only...

Page 8: ... Ⓔ H beam support Ⓕ Concrete support CAUTION Be sure to remove the Pallet Wood Support of the bottom side of the outdoor unit Base panel before fixing the bolt It may cause the unstable state of the outdoor settlement and may cause freezing of the heat exchanger resulting in abnormal oper ations Be sure to remove the Pallet Wood Support of the bottom side of the outdoor unit before welding Not rem...

Page 9: ...0 76 19 7 0 78 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 When connecting a flare nut coat the flare inner and outer faces with oil for R410A...

Page 10: ...is formed on the internal piping The oxide film is a caused by clogging EEV Capillary oil hole of accu mulator and suction hole of oil pump in compressor It prevents normal operation of the compressor In order to avoid this problem Welding should be done after replacing air by nitrogen gas When welding plumbing pipe the work is required Always use the nitrogen not use oxygen carbon dioxide and a C...

Page 11: ...ranch A B To outdoor unit To branch piping or indoor unit A B Facing upwards Facing downwards Within 3 Within 3 Viewed from point A in direction of arrow Within 10 2 Commercially available piping often contains dust and other materi als Always blow it clean with a dry inert gas 3 Use care to prevent dust water or other contaminants from entering the piping during installation 4 Reduce the number o...

Page 12: ...s and do not use flux If not oxidized film can cause clogging or dam age to the compressor unit and flux can harm the copper piping or refrigerant oil A B WARNING When installing and moving the air conditioner to another site be sure to make recharge refrigerant after perfect evacuation If a different refrigerant or air is mixed with the original refriger ant the refrigerant cycle may malfunction ...

Page 13: ...pe between Outdoor units ARCNN31 Ⓖ Connection branch pipe between Outdoor units ARCNN21 Y branch method Slave3 Slave2 Slave1 Master Indoor Unit l 40 m 131 ft 90m 295 ft H 110 m 361 ft L 150 m 492 ft 200 m 656 ft h 40 m 131 ft 10m or less ODU Capacity Master Slave 1 Slave 2 Slave 3 F E G C C C C C h See Table 4 Series Outdoor Units 2 Units 4 Units Combination of Y branch header Method Ⓐ Outdoor Uni...

Page 14: ...eter from outdoor unit to first branch A ODU capacity hp Pipe diameter when pipe length is 90m 295ft Standard Pipe diameter when pipe length is 90m 295ft Pipe diameter when height differ ential ODU IDU is 50m 164ft Liquid Pipe mm inch Gas Pipe mm inch Liquid Pipe mm inch Gas Pipe mm inch Liquid Pipe mm inch Gas Pipe mm inch 8 Ø9 52 3 8 Ø19 05 3 4 Ø12 7 1 2 Ø22 2 7 8 Ø12 7 1 2 Not increased 10 Ø9 5...

Page 15: ... units is 10 m 32 8 ft or less Pipes between outdoor units are 2 m 6 6 ft or less 2 m 6 6 ft or less If the distance between the outdoor units becomes more than 2 m 6 6 ft apply Oil Traps between the gas pipes If the outdoor unit is located lower than the main pipe apply Oil Trap Pipes between outdoor units are 2 m 6 6 ft or longer Oil Trap Oil Trap Oil Trap 2 m 6 6 ft or less 2m 6 6ft orless 2m 6...

Page 16: ...r of the refrigerant piping selected by the procedures described is different from the size of the joint the connecting sec tion should be cut with a pipe cutter Branch pipe should be insulated with the insulator in each kit Branch pipe Fitting When the number of indoor units to be connected to the branch pipes is less than the number of branch pipes available for connec tion then cap pipes should...

Page 17: ...52 3 8 I D 9 52 3 8 I D 6 35 1 4 ARBLN23220 O D 28 58 1 1 8 I D 22 2 7 8 115 4 17 32 X2 100 4 11 32 O D 15 88 5 8 I D 12 7 1 2 70 2 3 4 O D 22 2 7 8 I D 15 88 5 8 I D 19 05 3 4 120 4 23 32 O D 38 1 1 1 2 I D 34 9 1 3 8 I D 28 58 1 1 8 O D 44 48 1 3 4 X2 175 6 7 8 I D 31 8 1 1 4 I D 53 98 2 1 4 I D 25 4 1 I D 44 48 1 3 4 I D 44 48 1 3 4 I D 38 1 1 1 2 I D 41 3 1 5 8 I D 44 48 1 3 4 I D 38 1 1 1 2 I...

Page 18: ...id side Gas side Close Close Close Close When inserting nitrogen gas of high pressure it must be used with reg ulator This function is used for creating vacuum in the system after compres sor replacement ODU parts replacement or IDU addition replacement Vacuum mode setting method SW01C Ɨ Confirm Automatic Addressing SW02C ȭ backward SW04C X cancel DIP SW01 7 Segment SW01D reset SW03C ȯ forward Vac...

Page 19: ...amount of refrigerant For the refrigerant addi tional charge Too much or too little refrigerant will cause trouble To use the Vacuum Mode If the Vacuum mode is set all valves of Indoor units and Outdoor units will be opened WARNING Use a vacuum pump or Inert nitrogen gas when doing leakage test or air purge Do not compress air or Oxygen and do not use Flamma ble gases Otherwise it may cause fire o...

Page 20: ...on system or building ventilation sys tem Limitation in piping work Prepare for earthquake and thermal stress Volume of the room at which Indoor Unit of the least capacity is installed Total amount of refrigerant in the system 0 44 kg m3 0 028 lbs ft3 Attach the additional refrigerant table of IDU Bad example Do not insulate gas or low pressure pipe and liquid or highpres sure pipe together Be sur...

Page 21: ...t box of Indoor and Outdoor Units because the box is sometimes removed at the time of service work Never connect the main power source to terminal block of communi cation cable If connected electrical parts will be burnt out Use the 2 core shielded wires for communication cable mark in the figure below If communication cable of different systems are wired with the same multiplecore cable the resul...

Page 22: ...cable 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 cable which is the same thickness do as shown in the figure below For wiring use the designated power cable and connect firmly then secure to prevent outside pressure being exerted on the terminal bl...

Page 23: ...loping due to interference in the signal wiring caused by electrostatic and elec tromagnetic coupling The tables below indicates our recommendation as to appropriate spacing of communication and power cables where these are to be run side by side Communication and Power Cables Communication cable Types shielded wires or unshielded wires Cross section 1 0 1 5 mm2 1 55 10 3 2 32 10 3 in2 Maximum all...

Page 24: ...0V 50Hz 380 415V 220 240V Wiring of main power supply and equipment capacity Use a separate power supply for the Outdoor Unit and Indoor Unit Bear in mind ambient conditions ambient temperature direct sun light rain water etc when proceeding with the wiring and connec tions The cable size is the minimum value for metal conduit wiring The power cord size should be 1 rank thicker taking into account...

Page 25: ...ely 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 mo mentary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running th...

Page 26: ...nes Ground wire from front guide panel Gap Over 50mm 1 97 Front Side Fix firmly with cable tie or clamp cord not to be displaced Main power line connection Communication Ground wire connection Quick control Setting In the factory setting main PCB dip switch setting is all OFF Check and make sure that all the indoor unit model name are ARNU 4 Change the main PCB Dip switch No 3 OFF ON like below pi...

Page 27: ... power supply is not applied to the indoor unit operation error occur Automatic Addressing has to be performed after more than 3 min utes to improve indoor unit communition when initial power is sup plied Please be sure that all the dip switch 1 7 of master outdoor unit is OFF before Automatic Addressing setting Setting the optional function Select the mode function option value using Button and c...

Page 28: ...6 on on oFF Central Control Con nection at Indoor Unit side Fn 19 oFF oFF on Compressor Input Current Limit mode Fn 20 oFF oFF oP1 oP10 Power Consump tion Display on wired remote con troller Fn 21 SPL0 SPL0 SPL1 Pd10 Pd11 Overall Defrost Op erating in Low tem perature Heating Fn 22 oFF on oFF Optional Base panel Heater Fn 23 oFF on oFF User Idu Comfort Cooling Mode setting Id 10 EAch Refer Com for...

Page 29: ...0 op4 op6 op11 52 56 57 op7 op9 op12 49 53 55 CAUTION Request installer to set the function during installation If ODU RPM changes cooling capacity may go down Master unit PCB DIP switch on No 5 Select the mode using Button Func Push the button Select the Function using Button Fn4 Push the button Select the Option using Button on oFF Push the button Overall defrost mode is set Mode setting on Oper...

Page 30: ...ect the Option using Button on oFF Push the button Low Ambient Kit Mode setting method h Reference for functional logic of I O Module CAUTION Ask an authorized technician to setting a function If do not use a function set an off mode Change a power consumption or capacity Setting Mode Purpose Condensing temperature variation Evaporating temperature variation Heat Cool op1 Increase capacity Increas...

Page 31: ...1 Push the button Select the Option using Button oFF op1 op5 Push the button Auto Dust Removal Mode is set Function setting Setting Inverter Hz oFF op1 143 Hz op2 135 Hz op3 128 Hz op4 120 Hz op5 113 Hz op6 105 Hz op7 98 Hz op8 90 Hz op9 83 Hz CAUTION Ask an authorized technician to setting a function If use a function first install a Central controller Master unit PCB DIP switch on No 5 Select th...

Page 32: ... temperature wll be decreased When used heating operation in case of high humidity condition de forest will be delayed because target high low pressure will be changed Master unit PCB DIP switch on No 5 Select the mode using Button Func Push the button Select the Function using Button Fn16 Push the button Select the Option using Button Fn19 Push the button Select the Option using Button on oFF Pus...

Page 33: ...g capacity mid Power consumption mid 3 Cooling capacity high Power consumption high Master unit PCB DIP switch on No 5 Select the mode using Button Idu Push the button Select the Function using Button Id10 Push the button EEV pulse appearing seg1 seg2 Idu No seg3 seg4 Mode Select the Function using Button Idu No setting and Push the button Select the Function using Button Mode setting and Push the...

Page 34: ...ror outdoor unit indoor 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 8 Hydro Kit Hot water storage tank Temperature sensor Pipe temperature sensor is open or short 0 9 Indoor EEPROM Error In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF 1...

Page 35: ...S T power of Outdoor Unit Omitting connection of outdoor unit 5 1 Excessive capacity of indoor units Excessive connection of indoor units compared to capacity of Out door Unit 5 2 Communication error inverter PCB Main PCB Failing to receive inverter signal at main PCB of Outdoor Unit 5 3 Communication error indoor unit Main PCB of Outdoor Unit Failing to receive indoor unit signal at main PCB of O...

Page 36: ... 1 5 1 Failure of operation mode conversion at Outdoor Unit Failure of operation mode conversion at Outdoor Unit 1 5 3 Outdoor Unit Heat Exchanger Temperature Sen sor upper part Fault Outdoor Unit Heat Exchanger Temperature Sensor upper part Fault 1 5 4 Outdoor Unit Heat Exchanger Temperature Sen sor lower part Fault Outdoor Unit Heat Exchanger Temperature Sensor lower part open or short 1 8 2 Out...

Page 37: ...ows out CAUTION FOR REFRIGERANT LEAK The installer and system specialist shall secure safety against leakage according to local regulations or standards The following standards may be applicable if local regulations are not available Introduction Though the R410A refrigerant is harmless and incombustible itself the room to equip the air conditioner should be large to such an extent that the refrig...

Page 38: ... areas where corrosive gases such as acid or alkaline gas are produced Avoid installing the product where it could be exposed to sea wind salty wind directly It can result corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation If outdoor unit is installed close to the seaside should avoid direct exposure to the ...

Page 39: ...lizar o descarte ade quado de parelhos celulares pilhas e baterias 3 Através do Programa Coleta Inteligente a LG disponíbiliza pontos de coleta em localidades diversas incluindo assistências técnicas autorizadas da LG Electron ics Para mais informações visite o site www lge com br coleta seletivaou contate nosso SAC através do número 4004 5400 Capitais e Regiòs metropolitanas ou 0800 707 5454 dema...

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