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Installation Manual

15

Installation Space

Installation

Foundation for Installation

[Unit:mm]Z
Z

Foundation bolt executing method

200

Nut

75

75

200

Spring washer

Frame

Anti-vibrationZ

materials

Four bolt are Z
requiredZ
3 thread ridgesZ
Z

H-Beam

ConcreteZ

base

100

• Check the strength and level of the installation ground so that the unit will not cause any operating vibration or

noise after installation.

• Fix the unit securely by means of the foundation bolts. (Prepare 4sets of M12 foundation bolts, nuts and

washers each which are available on the market.)

• It is best to screw in the foundation bolts until their length are 20mm from the foundation surface.

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Содержание ARUN50LH2A

Страница 1: ...letely 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 P NO MFL62603703 www lg com TYPE System ...

Страница 2: ...11 Installation 15 Refrigerant piping 19 Electrical Wiring 38 Test Run 53 Caution For Refrigerant Leak 63 Installation guide at the seaside 65 Safety Precautions 3 Installation Process 7 Outdoor Units Information 8 Before installation 9 Select the Best Location 10 Installation Space 11 Installation 15 Refrigerant piping 19 Electrical Wiring 38 Test Run 53 Caution For Refrigerant Leak 63 Installati...

Страница 3: ...ate or electric work is performed improperly electric shock or fire may result Ask the dealer or an authorized technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Always intstall a dedicated circuit and breaker Improper wiring or installation may cause fire o...

Страница 4: ...e 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 Safety Precautions When installing and moving the air conditioner to another site do not charge it with a different refrigerant from the refrigerant specified on the unit...

Страница 5: ...he unit in a hospital communication station or similar place provide sufficient protection against noise The inverter equipment private power generator high frequency medical equipment or radio communication equipment may cause the air conditioner to operate erroneously or fail to operate On the other hand the air conditioner may affect such equipment by creating noise that disturbs medical treatm...

Страница 6: ... may result in water leakage or other problems Auto addressing should be done in condition of connecting the power of all indoor and outdoour units Auto addressing should also be done in case of changing the indoor unit PCB Use a firm stool or ladder when cleaning or maintaining the air conditioner Be careful and avoid personal injury Do not insert hands or other objects through the air inlet or o...

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

Страница 8: ...oor Within 50 100 Power Supply Outdoor Unit 3Ø 380 415 V 50 Hz 3Ø 380 V 60 Hz n Heat Pump Model 4 5 6 HP Equivalent horsepower ARUN40LH2A ARUN50LH2A ARUN60LH2A Chassis Refrigerant Product charge kg 3 3 3 Max Connectable No of Indoor Units 6 8 9 Net Weight Gross Weight kg 107 118 107 118 107 118 Dimensions W x H x D mm 950 1 380 330 950 1 380 330 950 1 380 330 inch 37 4 54 3 13 0 37 4 54 3 13 0 37 ...

Страница 9: ...o prevent environment pollution When carrying the suspended unit pass the ropes between legs of base panel under the unit 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 Use only accessories and parts which are of the designated specification when installing Product appearance may be different ...

Страница 10: ...ventilated and having a lot of sunshine in case of installing the product at a place with a high humidity in winter near beach coast lake etc Ex Rooftop where sunshine always shines 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 Shade position with a narrow space Location with much ...

Страница 11: ...ice space The unit of values is mm In case of obstacles on the suction side 1 Stand alone installation 2 Collective installation 100 or more 100 or more 100 or 100 or more more 500 or less more 1000 or 100 or more 500 or less more 1000 or 150 or more 150 or 150 or more more 500 or less more 1000 or 300 or more 100 or more 200 or more 1000 or more 300 or more 100 or more 1000 or more 200 or more Un...

Страница 12: ...le height of discharge side is higher than the unit 1 Stand alone installation 2 Collective installation 500 or more 500 or less more 1000 or 500 or more 1000 or more 500 or less 1000 or more 1000 or more H L L H L H 100 or more 500 or more 500 or less more 1000 or L H 250 or more 1000 or more 100 or more 100 or more Unit mm Unit mm Installation Space ...

Страница 13: ...e installation L H L H L H L H L H L H L H 300 or more 1000 or more 500 or less 50 more 1000 or L 300 or more 1250 or more H L 100 or more 500 or more 500 or less more 1000 or H L 300 or more 1000 or more H L 300 or more 1500 or more 500 or less more 1000 or H L 300 or more 1500 or more 100 or more 100 or more 5 5 5 100 or more e e 100 or more e e Unit mm Unit mm ...

Страница 14: ...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 unit not to come in contact with snow directly If snow piles up and freezes on the air suction hole the system may malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the higher inst...

Страница 15: ...d ridgesZ Z H Beam ConcreteZ base 100 Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation Fix the unit securely by means of the foundation bolts Prepare 4sets of M12 foundation bolts nuts and washers each which are available on the market It is best to screw in the foundation bolts until their length are 20mm f...

Страница 16: ...d dimension in the table above 4 Check Compare the flared work with figure right If flare is noted to be defective cut off the flared section and do flaring work again Main cause of gas leakage is defect in flaring work Carry out correct flaring work in the following procedure Pipe A Gas Liquid Gas Liquid 5 6 19 100 12 7 1 2 6 35 1 4 1 6 1 8 1 1 1 3 0 63 0 71 0 43 0 51 16 0 54 600 15 88 5 8 9 52 3...

Страница 17: ...ning torque Applying too much torque may cause the flares to crack After all the piping has been connected use nitrogen to perform a gas leak check 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 torq...

Страница 18: ... point temperature more than 23 C water drops are liable to fall In this case add heat insulation material according to the following procedure Heat insulation material to be prepared Adiabatic glass wool with thickness 10 to 20mm Stick glass wool on all air conditioners that are located in ceiling atmosphere In addition to the normal heat insulation thickness more than 8mm for refrigerant piping ...

Страница 19: ...e a short circuit in the electrical box Braze suitable field piping with service valve of gas pipe Gas pipe Liquid pipe Wet towel Forward Sideways Backward Base pan Downward Knock out Figure 1 Figure 2 Figure 4 Gas side piping Bigger Dia Liquid side piping Smaller Dia Putty or insulating material produced locally Drain hose Connecting wire Connection pipe CAUTION Take care so that there is no ther...

Страница 20: ...the factory How to use the Shut Off valve The names of parts of the service valve are shown in the figure Use hexagonal wrenches 4mm or 6mm Opening the valve 1 Place the hexagon wrench on the valve bar and turn counter clockwise 2 Stop when the valve bar no longer turns It is now open Closing the valve 1 Place the hexagon wrench on the valve bar and turn clockwise 2 Stop when the valve bar no long...

Страница 21: ...own 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 insulat...

Страница 22: ...on and the unit may be damaged After selecting diameter of the refrigerant pipe to suit total capacity of the indoor unit connected after branching use an appropriate branch pipe set according to the pipe diameter of the indoor unit and the installation pipe drawing WARNING Do not use anti oxidants when brazing the pipe joints Residue can clog pipes and break equipment 3 2 1 4 5 6 1 Refrigerant pi...

Страница 23: ...nit capacity kW Btu h Liquid pipe Gas pipe mm inch mm inch 11 0 37 500 Ø9 52 3 8 Ø15 88 5 8 14 5 49 500 Ø9 52 3 8 Ø15 88 5 8 16 0 54 600 Ø9 52 3 8 Ø19 05 3 4 Indoor unit capacity kW Btu h Liquid pipe Gas pipe mm inch mm inch 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 600 Ø9 52 3 8 Ø15 88 5 8 Indoor unit capacity kW Btu h Liquid pipe Gas pipe mm inch mm inch 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 600 Ø...

Страница 24: ...300m Longest pipe length Equivalent pipe length A B C D e 150m A B C D e 175m Longest pipe length after 1st branch B C D e 40m Difference in height Outdoor Unit Indoor Unit H 50m 40m Outdoor Unit is lower than Indoor Units Difference in height Indoor Unit Indoor Unit h 15m L l H h CAUTION Indoor Unit should be installed at lower position than the header Assume equivalent pipe length of Y branch to...

Страница 25: ...difference between Indoor Units may occur Longest pipe length Equivalent pipe length A f 150m A f 175m Longest pipe length after 1st branch f 40m Difference in height Outdoor Unit Indoor Unit H 50m 40m Outdoor Unit is lower Difference in height Indoor Unit Indoor Unit h 15m L l H h Total pipe length A a b c d e f 300m CAUTION Indoor Unit should be installed at lower position than the header Assume...

Страница 26: ...rence in height Outdoor Unit Indoor Unit H 50m 40m Outdoor Unit is lower than Indoor Units Difference in height Indoor Unit Indoor Unit h 15m L l H h Downward Indoor Unit total capacity kW Btu h 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 600 Ø9 52 3 8 Ø15 88 5 8 22 4 76 400 Ø9 52 3 8 Ø19 05 3 4 Liquid pipe mm inch Gas pipe mm inch WARNING It is recommended that difference of piping length for pipes co...

Страница 27: ...igerant Correction factor of Indoor unit Refrigerant Piping Note Fill in the f gas Label attached on outdoor about the quantity of the fluorinated greenhouse gases Manufacturing site See Model Name label Installation site If possible being placed adjacent to the service points for the addition or removal of refrigerant The total Charge CF value of indoor unit unit kg Capacity Btu kW 5k 7k 9k 12k 1...

Страница 28: ...tion of 2 or more security device alarm for gas leakage Change Indoor Unit type installation position should be over 2m from the floor Wall mounted type Cassette type Adoption of ventilation system choose ordinary ventilation system or building ventilation system Limitation in piping work Prepare for earthquake and thermal stress WARNING Refer to model information since the CF Value of correction ...

Страница 29: ...tical Distribution Ensure that the branch pipes are attached vertically 3 The others Header 1st 1st 1stZ Main pipeZ Distribution 2nd 2nd 3rd 3ndZ Main pipeZ Distribution 1st 3rd 3rd main pipe distributionZ Z 2nd Distribution Method Refrigerant Piping ...

Страница 30: ...ontally or vertically see the diagram below When the number of pipes to be connected is smaller than the number of header branches install a cap to the unconnected branches Ⓐ To indoor unit Ⓑ To outdoor unit ⓒ Pipe cutter The indoor unit having larger capacity must be installed closer to Ⓐ than smaller one If the diameter of the refrigerant piping selected by the procedures described is different ...

Страница 31: ...nsulator 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 Pinched pipe B Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure I...

Страница 32: ...I D15 88 I D19 05 I D22 2 I D28 58 O D25 4 I D22 2 O D19 05 O D19 05 I D22 2 I D25 4 70 80 110 I D9 52 I D12 7 5 3 6 D I 2 5 9 D I I D9 52 I D12 7 I D6 35 I D12 7 332 321 74 376 404 96 471 517 125 416 444 96 371 394 83 I D34 9 O D31 8 I D22 2 O D22 2 I D28 58 I D31 8 O D19 05 I D28 58 120 90 120 130 120 110 70 O D15 88 I D9 52 I D12 7 O D12 7 I D6 35 I D9 52 I D15 88 I D19 05 I D22 2 I D22 2 I D19...

Страница 33: ...0 ID9 52 ID9 52 ID6 35 ID6 35 ID9 52 ID12 7 120 150 120 ID15 88 ID12 7 ID15 88 ID12 7 ID15 88 ID19 05 120 150 120 ID6 35 ID9 52 ID9 52 ID12 7 120 150 160 580 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 700 120 ID6 35 ID9 52 ID9 52 ID6 35 ID9 52 ID12 7 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 120 720 ID6 35 ID9 52 ID9 52 ID6 35 ID12 7 ID9 52 120 ...

Страница 34: ...e valves closed Be also sure to pressurize liquid pipe gas pipe and high low pressure common pipe The test result can be judged good if the pressure has not be reduced after leaving for about one day after completion of nitrogen gas pressurization During this test set DIP switch as Vacuum Mode Note If the ambient temperature differs between the time when pressure is applied and when the pressure d...

Страница 35: ...acuum pump for 1hr to 100 7kPa vacuum drying If the system cannot be evacuated to 100 7kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after maintaining the system in vacuum for 1 hr WARNING If the primary charging is not performed after vacuum wet air may go into the outdoor unit If air is mixed with the refrigerant the refri...

Страница 36: ...When unit starts to run and the unit will display ch26 error If trying to keep running under this condition compressor will be broken Refrigerant cylinder Open Open Charging during cooling operation Liquid pipe Gas pipe 3 Refrigerant charging Follow following procedure to charge the refrigerant 1 Open all service valves 2 Run the unit with cooling mode 3 Charging the refrigerant to gas service val...

Страница 37: ...th 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 possibility of condensation drip etc...

Страница 38: ...h 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 sometimes removed at the time of service work 5 Never connect the main power source to terminal block of communication line If connected electrical parts will be burnt out 6 Use 2 core shield cable for communication...

Страница 39: ...se them together with power lines The conductive shielding layer of cable should be grounded to the metal part of both units Never use multi core cable As this unit is equipped with an inverter to install a phase leading 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 ...

Страница 40: ...igures are based on assumed length of parallel cabling up to 100m For length in excess of 100m the figures will have to be recalculated in direct proportion to the additional length of line involved 2 If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased If the lines are laid inside conduits then the following point must also be ...

Страница 41: ...cal 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 regulations 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 connections are not fixed firml...

Страница 42: ...ropriate screwdriver for tightening the terinal screws A screwdriver with a small head will strip the head and make proper tighterning impossible Over tightening the terminal screws may break them Precautions when laying power wiring How to connect wiring U3 Chassis 2 Fan Model 1 Connect power supply wire to terminal block of control case using clamps on the supporter and control case as shown fig...

Страница 43: ... 3 4 3 4 Pull Box Installer Option WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main switch that can interru...

Страница 44: ... 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 ...

Страница 45: ...ation Cable BUS type Connection of communication cable must be installed like below figure between indoor unit to outdoor unit STAR type Abnormal operation can be caused by communication defect when connection of communication cable is installed like below figure STAR type ...

Страница 46: ...9 Model Code In case of 3Φ 5HP model Seqence NO Content 1 118 Model code 1 255 2 5 Total capacity HP 3 2 2 heatpump No display cooling only 4 25 Normal 5 127 Model type 1 255 Phase Capacity HP Model code Model type 127 3ø WARNING Main PCB power should be reset in order to recognize the changed function after handling the DIP switch for configuration of additional functions Main PCB power should be...

Страница 47: ...13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Short Pipe Length Long Pipe Length Refrigerant Auto Charging Refrigerant Checking Cool Heat Selector Snow Forced Defrosting Snow Forced Defrosting Night Silent Operation Pump Down Pump Out Forced Oil Return Vacuum Mode CAUTION 1 X mark means dip switch must be off Otherwise the function may not operates correctly 2 If each dip switch doesn t set correctly uni...

Страница 48: ... unit connection set 5 Numbers of indoor unit connection set whose addressing is completed are indicated for 30seconds 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 CH01 CH02 CH03 CH06 Indicated as numbers of indoor unit connection set CAUTION In replacement of the indoor unit PCB always pe...

Страница 49: ...on 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 SW02V for 5 sec 7 segment LED 88 Waiting about 2 7 minutes 7 segment LED OK YES NO Check the conne...

Страница 50: ...t communication lines between outdoor unit and indoor units through the terminal block When connecting communication line between outdoor unit and indoor units with shielded wire connect the shield ground to the earth screw When connecting the central control system with shielded wire connect the shield ground to the earth screw Terminal block on the main PCB SODU IDU INTERNET DRY1 DRY2 B A B D A ...

Страница 51: ...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 Outdoor Units Group recognizing the simple central controller No 0 group 00 0F No 1 group 10 1F No 2 group 20 2F No 3 group 30 3F No 4 group 40 4F No 5 group 50 5F No 6 group 60 6F No 7 g...

Страница 52: ...r 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 and description How to set mode without Cool Heat Selector Cooling Mode Setting GND Connection Off Open Heating Mode Setting GND Connection GND Connection Fan Mode Setting Off Open GND Connectio...

Страница 53: ...ped and 938 is displayed after 90 seconds 7 To perform FDD logic test proceeds when 3 minutes passed after reset Step 0 Check order signal Select the function of tust run Step 1 Sensor checking Check sensor abnormality Step 2 Refrigerant auto charging In case of adding additional refrigerant this function helps adding refrigerant automatically Step 3 Refrigerant checking Check refrigerant amount i...

Страница 54: ...utton until 508 is displayed Judging sensor normality Error Display Refrigerant Auto Charging Main pcb LED Note 4 Press the black button on the main PCB for 2 sec Main PCB SW01V Press the black button for 2 sec after turning off all of DIP S W Refrigerant Checking Press the black button until 608 is displayed Refrigerant Checking Don t Perform Sensor Checking No Yes Yes No Completed Note 1 Sensor ...

Страница 55: ...r 3 Air temperature sensor Error display during sensor inspection process is composed of 3 stages as shown below and is proceeded by repeating these stages Step 1 Display of error existence 309 or 319 309 Inspect sensors of outdoor unit 319 Inspect sensors of indoor unit Step 2 Display of error location In case of 309 outdoor unit sensors 2 digits on the left among 7 segments Sensor Type Table1 1 ...

Страница 56: ...rigerant 4 Refrigerant Charging Time may change according to the charging amount Refrigerant Charging Time about 3 min kg Wait for 3 min after power reset Start Main PCB SW01S Set the DIP swtich Refrigerant Auto Changing 1 2 7 ON Main PCB SW01B SW02B Press the black button on main PCB Is it necessary to charge refrigerant Press the black button for 2 sec after turning off all of DIP swtich Yes No ...

Страница 57: ...ature range Error will occur if temperature is out of range IDU 20 32 C ODU 0 43 C 2 For refrigerant charging use designated device only Capillary Assem Set 3 Set the IDU wired remote controller temperature sensing mode as IDU 4 Be careful that IDU should not be thermo off Error contents about auto refrigerant charging function 1 Temperature Range Error In case that IDU or ODU is out of range 2 Lo...

Страница 58: ...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 2 Judging Refrigerant Amount Note 1 In case air temperature is out of guaranteed temperature refrigerant checking function may end without performing refrigerant checking Use guaranteed...

Страница 59: ...em will be OFF 2 Excess of Refrigerant 619 After remove the 20 of calculated total refrigerant recharge the refrigerant by using Refrigerant Auto Charging Function 3 Scarcity of Refrigerant 629 Charge the refrigerant by using Refrigerant Auto Charging Function 4 Impossible to Judge 639 IF the system is not in order check the other problem except refrigerant CAUTION 1 Guaranteed Temperature range E...

Страница 60: ...2 In case the function is not used set the DIP switch OFF and reset the power 3 If ODU RPM changes cooling capacity may go down Main PCB power reset DIP switch No 12 14 ON ODU SW01S ODU SW01B Setting complete Setting the Fan Max RPM SW01V SW02V Note 1 U3 Chassis Note 1 Setting RPM 1 time 1 time 1 time SW02V Red 9 9 9 Operation hr 8 8 8 420 370 320 1 2 3 Judgment hr Fan Max RPM Setting Step SW01V B...

Страница 61: ... RMS of Outdoor Unit Outdoor Unit Inverter Compressor DC link Low Voltage Outdoor Unit High Pressure Switch Outdoor Unit Input Voltage High Low Voltage Outdoor Unit Inverter Compressor Start Failure PSC PFC Fault error Outdoor Unit Inverter DC link High Voltage Outdoor Unit Inverter Compressor Over Current Air temperature sensor of indoor unit is open or short Inlet pipe temperature sensor of indo...

Страница 62: ... MICOM and EEPROM or omitting EEPROM Outdoor Unit Inverter Compressor High Discharge Temperature High Pressure of Outdoor Unit Low Pressure of Outdoor Unit Low pressure ratio Outdoor Unit Inverter Compressor CT Sensor Fault Outdoor Unit Inverter Compressor Discharge Temperature Sensor Fault Outdoor Unit Low Pressure Sensor Fault Outdoor Unit High Pressure Sensor Fault Outdoor Unit Air Temperature ...

Страница 63: ...procedure of limiting concentration Limiting concentration is the limit of Freon gas concentration where immediate measures can be taken without 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 Flow ...

Страница 64: ...rm linked with mechanical ventilator Pay special attention to the place such as a basement etc where refrigerant can be present 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 result of calculat...

Страница 65: ... 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 ...

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