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P/NO : MFL67221416

INSTALLATION MANUAL

AIR

CONDITIONER

www.lg.com

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.

Original instruction

For more information, Refer to the CD or LG Web site (www.lg.com).

[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V.

Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si,

Gyeongsangnam-do, KOREA

ENGLISH

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Содержание ARUB120LTE4

Страница 1: ...manual for future reference after reading it thoroughly Original instruction For more information Refer to the CD or LG Web site www lg com Representative LG Electronics Inc EU Representative LG Electronics European Shared Service Center B V Krijgsman 1 1186 DM Amstelveen The Netherlands Manufacturer LG Electronics Inc Changwon 2nd factory 84 Wanam ro Seongsan gu Changwon si Gyeongsangnam do KOREA...

Страница 2: ...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 Authorized Serv ice Center There is risk of fire electric shock explo sion or injury Do not install remove or re install the unit by yourself customer T...

Страница 3: ...e appropri ate measures to prevent the safety limit from being exceeded Should the refriger ant leak and cause the safety limit to be ex ceeded harzards due to lack of oxygen in the room could result Operation Do not damage or use an unspecified power cord There is risk of fire electric shock explo sion or injury Use a dedicated outlet for this appliance There is risk of fire or electrical shock B...

Страница 4: ... deteri orate 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 cause water leak age Be very careful about product transportation Only one person should not carry the prod uct if it wei...

Страница 5: ... public electric power supply 26 Field Wiring 27 Checking the setting of outdoor units 28 HR Unit PCB 28 Switch for setup of HR Unit 29 Automatic Addressing 30 The Procedure of Automatic Addressing 30 Flow chart of auto addressing for pipe detection 31 Flow chart of manual addressing for pipe detection 31 Example of manual valve addressing Non Zoning setting 31 Example of manual valve addressing Z...

Страница 6: ...rigerant piping work Check model name to make sure the ﬁtting is made correctly Installation of indoor unit Take account of gradient of drain piping Sleeve and insert work Make connection clearly between outdoor indoor remote controller and option Preparation of contract drawings Indicate clearly who will be responsible for switch setting Determination of division work The vacuum pump used must ha...

Страница 7: ... 100 more Serviceing space 100 more 100 more Serviceing space Serviceing space 300more Servicing space 300more Servicing space 100 more Serviceing space Inspection door servicing space 481 345 1 2 3 7 450 450 453 174 174 182 218 Unit mm No Part Name Description PRHR041 031 PRHR021 1 Low pressure Gas pipe connection port Ø28 58 Brazing con nection Ø22 2 Brazing con nection 2 High pressure Gas pipe ...

Страница 8: ...lated on the upper part of the Outdoor Unit by more than 10cm always remove snow for operation Seasonal wind and cautions in winter Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well Get ready for seasonal wind or snow in winter even in other areas Install a suction and discharge duct not to let in snow or rain Install the outdoor uni...

Страница 9: ...rt of the bottom side of the outdoor unit Base Pan 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 operations Be sure to remove the Pallet Wood Support of the bottom side of the outdoor unit before welding Not removing Pal let Wood Support causes hazard of fire during welding WARNING Install where i...

Страница 10: ...2 A R 0 4 0 8 Ø12 7 55 6 16 2 16 6 Ø15 88 75 7 19 3 19 7 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 flar...

Страница 11: ...gen pressure 0 02MPa Oxygen Promotes oxidative degradation of refrigerant oil Because it is flammable it is strictly prohibited to use Carbon dioxide Degrade the drying characteristics of gas Chevron Gas Toxic gas occurs when exposed to direct flame Always use a pressure reducing valve Please do not use commercially available antioxidant The residual material seems to be the oxide scale is observe...

Страница 12: ...Flat washer Flat washer M10 Hanging bolt Hanging bolt Hanging bolt M10 or M8 A Insulation Gas pipe Gas pipe Liquid pipe Liquid pipe HR Unit 1 2 3 4 Low pressure Gas pipe Liquid pipe High pressure Gas pipe Whenever connecting the indoor units with the HR unit install the in door units in numerical order from No 1 Ex In case of installing 3 indoor units No 1 2 3 O No 1 2 4 X No 1 3 4 X No 2 3 4 X CA...

Страница 13: ...its per a branch pipe of HR unit are 8 indoor units There is not operate Auto changeover Mode override func tion in the zoning group When there are operating indoor units on cooling heating mode another indoor units aren t changed on heating cooling mode in the zoning group Reducers for indoor unit and HR unit Unit mm Models High pressure Gas pipe Low pressure Liquid pipe Indoor unit reducer HR un...

Страница 14: ...r insuffi cient 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 perform a pump down This will not only damage the com pressor but also deteriorate the performance 11 Never use refrigerant to perform an air purge Always evacuate air by using a vacuum pump 12 Always in...

Страница 15: ... C3 length should be calculated twice A B x 2 C3 x 2 C1 C2 a b c d e f g i j k l m n 1 000 m WARNING Serial connection of HR units Capacity sum of indoor units 192 4 kBtu hr Refer to the HR unit PCB part for the valve group control setting It is recommended that difference in pipe lengths between an HR unit and indoor units for example difference in length of a b c and d be minimized The larger di...

Страница 16: ...3 4 22 2 7 8 28 30 32 34 36 41 3 1 5 8 44 5 1 3 4 38 40 42 34 9 1 3 8 38 1 1 1 2 44 46 48 50 52 54 56 58 60 62 22 2 7 8 44 5 1 3 4 41 3 1 5 8 25 4 1 53 98 2 1 8 44 5 1 3 4 64 66 53 98 2 1 8 44 5 1 3 4 53 98 2 1 8 68 70 72 74 76 78 80 If available on site it use this size Otherwise it can t be increased Pattern 1 HR1 48k 48k 1 2 HR2 48k 48k 3 4 B Impossible installation Head branch pipe HR unit Pat...

Страница 17: ...nit Ø28 58 Low pressure gas pipe Ø15 88 Liquid pipe Ø22 2 High pressure gas pipe Pipe diameter between 1st and 2nd branch 71 7kW indoor units Ø34 9 Gas pipe Ø19 05 Liquid pipe in conformity with down ward indoor units Since the main pipe diameter of 22HP outdoor unit is Ø28 58 Low pressure gas pipe Ø15 88 Liquid pipe Ø22 2 High pressure gas pipe is used as the main pipe and the connection pipe bet...

Страница 18: ... Trap 2m or less 2m or less 2m or less 0 2m or more 2m or longer 2m or longer 2m or longer 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 lower outdoor unit OilTrap Toward indoor unit Toward indoor unit Pipe inclination 2 or more Toward indoor unit Toward indoor unit...

Страница 19: ...equation can not be satisfied then follow the follow ing steps Selection of air conditioning system select one of the next Installation of effective opening part Reconfirmation of Outdoor Unit capacity and piping length Reduction of the amount of refrigerant Installation of 2 or more security device alarm for gas leakage Change Indoor Unit type installation position should be over 2m from the floo...

Страница 20: ...3 ARBLN 23220 O D 28 58 I D 22 2 115 X2 100 O D15 88 I D12 7 70 O D 22 2 I D 15 88 I D 19 05 120 O D 38 1 I D 34 9 I D 28 58 O D 44 48 X2 175 I D31 8 I D 53 98 I D 25 4 I D 44 48 I D 44 48 I D38 1 I D41 3 I D 44 48 I D38 1 I D41 3 I D 53 98 420 490 134 1 2 3 3 2 3 3 3 3 2 O D 19 05 I D 12 7 I D 15 88 O D12 7 I D6 35 I D9 52 X2 110 110 I D25 4 I D22 2 I D 19 05 I D 19 05 I D 22 2 I D 25 4 I D 25 4 ...

Страница 21: ... the time of pressurization 3 8 MPa is 27 C 24 hour later 3 73 MPa 20 C In this case the pressure drop of 0 07 is because of tem perature drop And hence there is no leakage in pipe oc curred CAUTION To prevent the nitrogen from entering the refrigeration system in the liquid state the top of the cylinder must be at higher position than the bottom when you pressurize the system Usually the cylinder...

Страница 22: ...aterial ⓔ Communication lines Communication lines Separation Power lines E D D B A C NOTE Always add an appropriate 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 l...

Страница 23: ...ield cable for communication cable mark in the fig ure below If communication cable of different systems are wired with the same multiplecore cable the resultant poor transmitting and receiving will cause erroneous operations mark in the figure below Only the communication cable specified should be connected to the terminal block for Outdoor Unit communication CAUTION Be sure to correct the outdoo...

Страница 24: ...ow 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 block Use an appropriate screwdriver...

Страница 25: ...k Do not use anything other than breaker and fuse with correct ca pacity Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire WARNING Follow ordinance of your governmental organization for techni cal standard related to electrical equipment wiring regulations and guidance of each electric power company Make sure to use specified cables for connections ...

Страница 26: ...it Outdoor Power supply 3Ø 4wires Indoor Power supply 1Ø 2wires Main Switch R S T N Switch Fuse L N Communication Line 2 Wires Cable Power Line 4 Wires Cable Communication Line 3 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Master Indoor Units Slave1 Slave2 Slave3 R S T N Switch Fuse R S T N Switch Fuse R S...

Страница 27: ...ound wire Power Ground cable Over 50mm 1 97 gap Communication cable Main power terminal block Insulation sleeves attachments Fix ﬁrmly not to be displaced ODU IDU Communication cable ODU ODU Communication cable e Main power terminal block Ground wire Power Ground cable Over 50mm 1 97 gap Communication cable Left Side Right Side Front Side 1 Front Side 2 Main Power Connection Communication Connecti...

Страница 28: ...o 2 and No 3 pre adjusted as above in the factory For 2 branches PRHR021 For 3 branches PRHR031 For 4 branches PRHR041 Initial Setting 1 branches Connected 2 branches Connected 3 branches Connected 4 branches Connected 1 2 3 1 2 1 3 2 4 WARNING If you want to use a PRHR031 for 2 branches HR unit after clos ing the 3rd pipes set the dip switch for 2 branches HR unit If you want to use a PRHR041 for...

Страница 29: ...ddress of each indoor unit is indicated on the wired remote control display window CH01 CH02 CH03 CH06 Indicated as numbers of connected indoor units MAIN PCB Automatic pipe detection 1 Turn No 1 of SW02M of HR unit PCB off 2 Confirm that the setting of No 2 3 of SW02M corresponds with the number of indoor units 3 Reset the power of HR unit PCB 4 Master unit PCB DIP switch on No 5 5 Select the mod...

Страница 30: ...ing for pipe detec tion Completion of auto pipe detection It is possible to be generated mode changing noise of heating and cooling which is normal There is no mode changing noise at normal operation Are the number of indoor units connected to the outdoor unit wiring and displayed one equal Reset the power of HR unit PCB Confirm that the setting of No 2 3 of SW02M corresponds with the number of in...

Страница 31: ...R unit Zoning control is connecting 2 or more indoor units at one pipe of HR unit In case of Zoning control in order to set controls with multiple in door units connection uses the rotary switch Namely only the rotary switch changes from same valve set condition and set indoor units connection 1 On dip switch of the corresponding valves and sets the rotary switch at 0 2 Setting the number with tac...

Страница 32: ...e mode function option value using Button and con firm that using the button after dip switch No 5 is turned on DIP SW01 7 Segment SW01C conﬁrm SW02C ඔ backward SW03C ඖ forward SW04C cancel SW01D reset No Display and setup Setup and Contents 1 Operation Turn dip S W No 1 on Display 11 is displayed in 7 SEG 2 Operation Turn dip S W No 1 on 7 SEG disappeared 7 SEG SW01M 7 SEG SW01M No Display and se...

Страница 33: ...tion using Button op1 op12 Push the button Start the Night low noise function Save the selected option value in EEPROM Step Judgment Time Hr Operation Time Hr op1 8 9 op2 6 5 10 5 op3 5 12 op4 8 9 op5 6 5 10 5 op6 5 12 op7 8 9 op8 6 5 10 op9 5 12 op10 Continuous operation op11 Continuous operation op12 Continuous operation Noise Capacity Heat Pump 8 12HP 14 20HP Step Noise dB op1 op3 op10 55 59 op...

Страница 34: ...t the Option using Button oFF op1 op3 Push the button Mode is set CAUTION Ask an authorized technician to setting a function Step Mode OFF Not setting ON Low capacity mode Master unit PCB DIP switch on No 5 Select the mode using Button Func Push the button Select the Function using Button Fn7 Push the button Select the Option using Button on oFF Push the button IDU capacity adjusting is set Comfor...

Страница 35: ...indoor unit 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 0 Poor fan motor operation Disconnecting the fan motor connector Failure of indoor fan motor lock 1 7 Inlet Air temperature sensor of FAU Air temperature sensor of indoor unit is open or short Outdoor unit related error 2 1 Master Outdoor Unit Inverter Compressor IPM...

Страница 36: ...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 Master Outdoor Unit 5 3 Communication error indoor unit Main PCB of Outdoor Unit Failing to receive indoor unit signal at main PCB of Outdoor Unit 5 7 Communication error Main PCB inverter PCB Failing to receive signal main PCB at inverter...

Страница 37: ...Outdoor Unit Fan PCB Communication Error Failing to receive fan signal at main PCB of Master unit 1 0 6 Master Outdoor Unit FAN IPM Fault Error Instant Over Current at Master Outdoor Unit Fan IPM 1 0 7 Master Outdoor Unit Fan DC Link Low Voltage Error Master Outdoor Unit Fan DC Link Input Voltage is under 380V 1 1 3 Master Outdoor Unit Liquid pipe Temperature Sen sor Error Liquid pipe temperature ...

Страница 38: ...nt can stay since refrigerant is heavier than air CAUTION Air conditioners should not be installed in areas where corrosive gases such as acid or alkaline gas are produced Do not install 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 inefficie...

Страница 39: ...emission level and are not necessarily safe working levels Whilst there is a correlation between the emission and exposure levels this cannot be used reliably to determine whether or not further precautions are required Factor that influence the actual level of exposure of the workforce include the characteristics of the work room and the other sources of noise i e the number of equipment and othe...

Страница 40: ...40 ENGLISH ...

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