LG multi V JRUN Series Installation Manual Download Page 75

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Outdoor Unit

Electrical Wiring

Location of setting dip switch

7 - Segment

SW02V
(Auto Addressing)

SW01B

SW02B

Summary of Contents for multi V JRUN Series

Page 1: ...t 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 your set and retain it for future reference P No MFL67163401 ENGLISH www lg com MODELS JRUN Series JRUV Series ...

Page 2: ...dly Alternative Refrigerant R410A 14 Select the Best Location 14 Installation Space 15 Lifting method 17 Installation 18 Refrigerant piping installation 23 Pipe connections between indoor and outdoor unit 27 Electrical Wiring 53 Test Run 85 New Function 111 Caution For Refrigerant Leak 120 Installation guide at the seaside 122 2 Outdoor Unit 2 Outdoor Unit ...

Page 3: ...r an authorized technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Always intstall a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock For re installation of the installed product always contact a dealer or an Aut...

Page 4: ...nditioner to another site do not charge it with a different refrigerant from the refrigerant specified on the unit If a different refrigerant or air is mixed with the original refrigerant the refrigerant cycle may malfunction and the unit may be damaged Do not reconstruct to change the settings of the protection devices If the pressure switch thermal switch or other protection device is shorted an...

Page 5: ...perate erroneously or fail to operate On the other hand the air conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcasting Do not install the product where it is exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient op...

Page 6: ...g so may cut your fingers When transporting the outdoor unit suspending it at the specified positions on the unit base Also support the outdoor unit at four points so that it cannot slip sideways Do not touch any of the refrigerant piping during and after operation It can cause a burn or frostbite Do not operate the air conditioner with the panels or guards removed Rotating hot or high voltage par...

Page 7: ...le for switch setting 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 i...

Page 8: ...s Pipes mm inch 1 Outdoor unit 8 10 12 JRUN80LN3 JRUN100LN3 JRUN120LN3 JRUN80LN3 JRUN100LN3 JRUN120LN3 5 0 6 4 6 4 13 20 16 25 20 30 190 x 1 240 x 1 240 x 1 418 x 1 529 x 1 529 x 1 920 x 1 680 x 760 x 1 920 x 1 680 x 760 x 1 920 x 1 680 x 760 x 1 36 2 x 66 1 x 29 9 x 1 36 2 x 66 1 x 29 9 x 1 36 2 x 66 1 x 29 9 x 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 System HP Model Produ...

Page 9: ... 48 8 x 66 1 x 29 9 x 2 19 05 3 4 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 41 3 1 5 8 Unit System HP Model Product Charge kg Max Connectable No of Indoor Units Net Weight kg lbs Dimensions WxHxD mm inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inch 2 Outdoor Unit 3 Outdoor Unit 38 40 42 44 JRUN380LN3 JRUN400LN3 JRUN420LN3 JRUN440LN3 JRUN200LN3 JRUN200LN3 JRUN160LN3 ...

Page 10: ... 680 x 760 x 4 1 240 x 1 680 x 760 x 4 1 240 x 1 680 x 760 x 4 48 8 x 66 1 x 29 9 x 4 48 8 x 66 1 x 29 9 x 4 48 8 x 66 1 x 29 9 x 4 48 8 x 66 1 x 29 9 x 4 22 2 7 8 22 2 7 8 22 2 7 8 22 2 7 8 44 5 1 3 4 44 5 1 3 4 53 98 2 53 98 2 Unit System HP Model Product Charge kg Max Connectable No of Indoor Units Net Weight kg lbs Dimensions WxHxD mm inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inc...

Page 11: ... 8 9 52 3 8 12 7 1 2 19 05 3 4 19 05 3 4 22 2 7 8 28 58 1 1 8 Unit System HP Model Product Charge kg Max Connectable No of Indoor Units Net Weight kg lbs Dimensions WxHxD mm inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inch 1 Outdoor Unit 14 16 18 20 JRUV140LT3 JRUV160LT3 JRUV180LT3 JRUV200LT3 JRUV140LT3 JRUV160LT3 JRUV180LT3 JRUV200LT3 6 4 7 0 7 5 9 0 23 35 26 40 29 45 32 44 235 x 1 25...

Page 12: ...4 64 64 235 2 310 1 235 2 310 1 235 1 255 1 310 1 235 1 310 2 518 2 683 1 518 2 683 1 518 1 562 1 683 1 518 1 683 2 920 x 1 680 x 760 x 2 920 x 1 680 x 760 x 2 920 x 1 680 x 760 x 1 920 x 1 680 x 760 x 1 1 240 x 1 680 x 760 x 1 1 240 x 1 680 x 760 x 1 1 240 x 1 680 x 760 x 2 1 240 x 1 680 x 760 x 2 36 2 x 66 1 x 29 9 x 2 36 2 x 66 1 x 29 9 x 2 36 2 x 66 1 x 29 9 x 1 36 2 x 66 1 x 29 9 x 1 48 8 x 6...

Page 13: ...ght kg lbs Dimensions WxHxD mm inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inch 4 Outdoor Unit 70 72 74 76 JRUV700LT3 JRUV720LT3 JRUV740LT3 JRUV760LT3 JRUV200LT3 JRUV200LT3 JRUV200LT3 JRUV200LT3 JRUV200LT3 JRUV200LT3 JRUV200LT3 JRUV200LT3 JRUV160LT3 JRUV180LT3 JRUV200LT3 JRUV200LT3 JRUV140LT3 JRUV140LT3 JRUV140LT3 JRUV160LT3 31 4 31 9 33 4 34 0 64 64 64 64 235 1 255 1 310 2 235 1 310 3...

Page 14: ...ed 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 there is always sunshine The refrigerant R410A has the property of higher operating pressure in comparison with R22 Therefore all materials have the characteristics of higher resisting pressure than R22 ones and this characteristic should be also co...

Page 15: ...wall No limit to the height of the wall Front The height of the wall on the front side must be 1500mm or less The height of the wall on the inlet side must be 500mm or less There is no limit to the wall on the side If the height of the walls on the front and the side 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 A...

Page 16: ...may malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the higher installation console by 50cm than the average snowfall annual average snowfall if it is installed at the area with much snowfall Where snow accumulated on the upper part of the Outdoor Unit by more than 10cm always remove snow for operation 1 The height of H frame must be more than...

Page 17: ... 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 8 m long Place extra cloth or boards in the loc...

Page 18: ...t least 75mm At le st 10 a 0mm t e t m A l as 100 m At le st 0 a 1 0mm l t 1 0 m At eas 0 m le st 1 0mm At a 0 At least 100mm Needed for outdoor units of 23kW or above Center of the Unit For outdoor units of 23kW or above should not be supported only by the corner supports Outdoor units of 14 5 16kW can be supported only by the corner supports Needed for outdoor units of 23kW or above Center of th...

Page 19: ...lowing out of the outdoor unit in operation and the passages of the pipe and wiring when making the ground support Do not use tube or pipe for water outlet in the Base pan Use drainage instead for water outlet The tube or pipe may freeze and the water may not be drained WARNING Be sure to remove the Pallet Wood Support of the bottom side of the outdoor unit Base Pan before fixing the bolt It may c...

Page 20: ...ng tool as shown below Firmly hold copper tube in a bar or die as indicated dimension 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 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 1 2 ...

Page 21: ...fter all the piping has been connected use nitrogen to perform a gas leak check Tightening torque Union 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 flar...

Page 22: ...lt However if it is operated for a long time in high humid atmosphere dew 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 EPDM Ethylene Propylene Diene Methylene over 120 C the heat resistance temperature Add the insulation over 10mm thickness at high humidity envi...

Page 23: ...g pipes and the refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor unit Flare connection 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 common pipe connect pipes using connecting elbows Detach knock outs according the usages Detac...

Page 24: ...58 I D 44 48I D 53 98 134 70 83 314 331 I D 22 2 O D 19 05 I D 15 88 I D 19 05 I D 15 88 I D 12 7 I D 12 7 I D 15 88 I D 9 52 334 281 83 I D 19 05 I D 12 7 I D 15 88 I D 19 05 I D 22 2 334 281 83 8 0 I D 25 4 O D 22 2 I D 19 05 I D 12 7 I D 15 88 I D 19 05 Outdoor units Model Gas pipe Liquid pipe I D 22 2 For more information refer accessory installation manual Unit mm Y branch A B To outdoor unit...

Page 25: ... for connecting different diameters to connect the piping 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...

Page 26: ...installation pipe drawing 12 Always insulate the piping properly Insufficient insulation will result in a decline in heating cooling performance 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 Indoor Un...

Page 27: ...ing Valve 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...

Page 28: ...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 inside 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 with the pip...

Page 29: ... pipes 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 30: ...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 Ø6 35 Ø 9 52 Ø 12 7 Ø 15 88 Ø 19 05 Ø 22 2 Ø 25 4 Ø 28 58 Ø 31 8 Ø 34 9 Ø 38 1 It is not necessary to size up 2 While calculating whole refrigerant pipe length pipe B C D length should be calculated twice A Bx2 Cx2 Dx2 a b c...

Page 31: ...ipe between Outdoor units ARCNN41 Connection branch pipe between Outdoor units ARCNN31 Connection branch pipe between Outdoor units ARCNN21 Piping length form outdoor branch to outdoor unit 10 m equivalent length max 13 m for 22 HP or more Additional Application To satisfy below condition to make 40 m 90 m of pipe length after first branch 1 Diameter of pipes between first branch and the last bran...

Page 32: ...it 1 Indoor Unit H 110m Difference in height Indoor Unit 1 Indoor Unit h 15m Difference in height Outdoor Unit 1 Outdoor Unit h1 5m L l H h h1 h available on site it use this size Otherwise it can t be increased WARNING If overall equivalent pipe length is more than 90m from ODU to the longest IDU The diameter of the main pipe Gas and Liquid pipes must be increased as follow ò Refrigerant pipe dia...

Page 33: ...oor Unit 1st branch Indoor Units Sealed piping L 200m 40m H 110m 10m or less L 110m L 200m 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 between Outdoor units ARCNN21 u Header Method D C D C ...

Page 34: ...should be installed at lower position than the header Piping length from outdoor branch to outdoor unit 10m equivalent length max 13m for 22HP or more Branch pipe can not be used after header Branch pipe can not be used after header 3 Outdoor Units Example 6 Indoor Units connected Outdoor Unit Header branch Indoor Units Sealing Connection branch pipe between Outdoor units ARCNN31 Connection branch...

Page 35: ...nal application 40m 90m Conditional application L 110m 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 between Outdoor units ARCNN21 Header Sealed piping 10m or less H 110m Master Slave Master Slave Master Slave L 150m 200m Conditional application 4...

Page 36: ...ty Master Slave1 Slave2 L 150m 200m Conditional application 40m 90m Conditional application Branch pipe can not be used after header 4 Outdoor Units Example 5 Indoor Units connected Outdoor Unit 1st branch Y branch Y branch Indoor Unit Connection branch pipe between Outdoor units ARCNN41 Connection branch pipe between Outdoor units ARCNN31 Connection branch pipe between Outdoor units ARCNN21 Heade...

Page 37: ...67 2 229 400 Ø15 88 5 8 Ø28 58 11 8 72 8 248 500 Ø15 88 5 8 Ø34 9 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 mm inch Gas pipe mm inch h available on site it use this size Otherwise it can t be increased WARNING If overall equivalent pipe length is more than 90m from ODU to the longest ...

Page 38: ...nection 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 5 kW outdoor unit to 120 of its system capacity 73 8 kW and branching 7k 2 1kW indoor unit at the 1st branch Main pipe diameter 22 HP outdoor unit Ø28 58 Gas pipe Ø15 88 Liquid pipe Pipe diameter between 1st and 2nd branch 71 7kW indoor units Ø34 9...

Page 39: ...longer 2m or longer If the distance between the outdoor units becomes more than 2m 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 lower outdoor unit Oil Trap ...

Page 40: ... unit may not operate properly Apply Oil Trap as shown below when the length of the pipe between the outdoor units is more than 2m Otherwise the unit may not operate properly Toward indoor unit Toward indoor unit Pipe inclination 2 or more Toward indoor unit Toward indoor unit Toward indoor unit Toward indoor unit Example 1 Example 2 Example 3 Example 1 Example 2 Toward indoor unit Toward indoor u...

Page 41: ...lation 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 Toward indoor unit Toward indoor unit Toward indoor unit Oil Trap Pipe connections between indoor and outdoor unit ...

Page 42: ...4 4 2 12 kg v lu o indoor unit CF a e f unit k g Capac ty Btu h kW i 7k k 1 15k 1 k 24 8k 3 42 k 7 6k 5k 9 2k 8 k 2 6k k 48 6k 9 Type 1 6 2 2 2 8 3 6 4 5 5 6 7 1 8 10 6 12 3 14 1 22 4 28 0 2 Ceil ng oncea ed uct Low ta ic i C l D S t 7 1 0 7 37 0 1 0 7 0 17 17 0 3 0 Ceiling Concealed Duct High Static 26 0 2 0 6 0 26 26 26 0 4 0 4 0 44 62 00 1 0 0 6 2 0 0 4 4 0 1 0 l M t Wal oun ed 0 8 0 24 0 24 0 ...

Page 43: ...ilation system 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 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 n...

Page 44: ...bution Ensure that the branch pipes are attached vertically 3 The others Header Slave Master Slave Master 1st 1st 1st Main pipe Distribution 2nd 2nd 3rd Slave Master Slave Master Slave Master Slave Master 2nd Main pipe Distribution Slave Master 1st 3rd 3rd main pipe distribution 2nd Distribution Method ...

Page 45: ...diagram below There is no limitation on the joint mounting configuration If the diameter of the refrigerant piping selected by the procedures described is different from the size of the joint the connecting section should be cut with a pipe cutter Branch pipe should be insulated with the insulator in each kit When the number of pipes to be connected is smaller than the number of header branches in...

Page 46: ...should be insulated with the insulator in each kit Joints between branch and pipe should be sealed with the tape included in each kit Any cap pipe should be insulated using the insulator provided with each kit and then taped as described above B Pinched pipe Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pip...

Page 47: ...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 1 2 3 3 1 2 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 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 I D31 8 2 2 2 D I 8 5 8 2 D I I D19 05 I D15 88 I D12 7 I D19 05 I D15 88 2 3 1 2 1 3 2 5 9 D I 2 5 9 D I 7 2 1 D O I D15 88 I D19 05 I D12 7 I D...

Page 48: ... 05 ID15 88 ID22 2 ID28 58 ID25 4 120 120 150 360 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 72...

Page 49: ... 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 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 1 kg cm2 0 01 MPa for each 1 C of temperature...

Page 50: ...05MPa vacuum break with nitrogen gas and then evacuate it again with the vacuum pump for 1hr to 100 7kPa vacuum drying If the system cannot be evacuated to 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 When installing and moving the air conditioner to another site ...

Page 51: ... switch on 11 14 Cooling only switch on 10 12 13 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 Master unit PCB DIP switch off Heat pump switch off 11 14 Cooling only switch off 10 12 13 Power reset Vacuum mode cancellation CAUTION ODU operation stops during vacuum mode Compressor can t operate ENG...

Page 52: ... 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 there is a ...

Page 53: ...anization 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...

Page 54: ...ating 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 terminal block Slack in the power wiring may cause abnormal heat When connecting wiring which is the same thickness...

Page 55: ...nsmission line between outdoor unit and indoor units with shielded wire connect the shield ground to the earth screw WARNING The temperature sensor for outdoor air should not be exposed to direct sunlight Provide an appropriate cover to intercept direct sunlight Front Panel UX3 Noise filter Main PCB Magnet switch Reactor Bridge diode Inverter PCB Inverter fan PCB Take care of the phase sequence of...

Page 56: ...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 conditioner and signal line...

Page 57: ...stall an 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 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 connectio...

Page 58: ...tary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running the product in reversed phase may break the compressor and other parts 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 ...

Page 59: ...380 415V Power supply 1 Phase 50Hz 220 240V Main Switch Slave 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 3 Phase 4 Wires Power supply 50Hz 380 415V Power supply 1 Phase 50Hz 220 240V ...

Page 60: ...sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally Running the product in reversed phase may break the compressor and other parts The GND terminal at the main PCB is a terminal for dry contact It is not the point to make ground connection Make sure tha...

Page 61: ...ply 1 Phase 50Hz 220 240V Main Switch Slave1 Slave2 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 3 Phase 4 Wires Power supply 50Hz 380 415V Power supply 1 Phase 50Hz 220 240V Main Switc...

Page 62: ... 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 interrupt all the power sources in an integrated ...

Page 63: ...tion Pull Box Installer option Pull Box Installer option Pull Box Installer option 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 3 Phase 4 Wires Power supply 50Hz 380 415V Power supply 1...

Page 64: ... A A B B 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 interrupt all the power sources i...

Page 65: ...d Master Outdoor unit B SODU IDU INTERNET DRY1 DRY2 GND 12V A B A B A Master Outdoor Unit 3 4 3 4 3 4 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 separa...

Page 66: ...n 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 3 Phase 4 Wires Power supply 60Hz 380V Power supply 1 Phase 60Hz 220V Main Switch Slave R S T N Switch Fuse Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer opt...

Page 67: ...eventing 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 eq...

Page 68: ...ires 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 3 Phase 4 Wires Power supply 60Hz 380V Power supply 1 Phase 60Hz 220V Main Switch Slave1 Slave2 R S T N Switch Fuse R S T N Switch Fuse Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull Box Installer option Pull...

Page 69: ...it 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 bec...

Page 70: ...ion Pull Box Installer option Pull Box Installer option 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 3 Phase 4 Wires Power supply 60Hz 380V Power supply 1 Phase 60Hz 220V Main Switch Sl...

Page 71: ... matched A A B B 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 interrupt all the power s...

Page 72: ...STAR type Connection of communication cable must be installed like below figure between indoor unit to outdoor unit Abnormal operation can be caused by communication defect when connection of communication cable is installed like below figure STAR type Electrical Wiring ...

Page 73: ...m 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 ODU Co...

Page 74: ...inal Block Main Power Terminal Block Ground Cable Power Ground lines Over 50mm Gap Communication line Main Power Terminal Block Front Side 1 6 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 li...

Page 75: ...76 Outdoor Unit Electrical Wiring Location of setting dip switch 7 Segment SW02V Auto Addressing SW01B SW02B ...

Page 76: ...r This number represents the setting condition For example represents R410A 30HP Master model code Slave1 model code Slave2 model code total capacity 2 25 150 1 255 Master model code 1 255 Slave 1 model code 1 255 Slave 2 model code 1 255 Slave 3 model code 6 80HP HP number sum of master capacity and slave capacity No display cooling only 2 heat pump 25 normal 153 Model Type JRUNxxxN3 Example 30Hp...

Page 77: ... use 5 Cooling Only model is not working on functions of Heat Pump model 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 target subcooling...

Page 78: ...essure mode ⅹ ⅹ ⅹ ⅹ Nigh low noise operation Cooling only ⅹ Pump down ⅹ Forced oil return operation ⅹ ⅹ ⅹ Vacuum mode ⅹ ⅹ ODU setting Master unit ⅹ ⅹ ⅹ Slave 1 unit ⅹ Slave 2 unit ⅹ Slave 3 unit CAUTION 1 X mark within the table means that the dip switch must be pulled down If not the function may not work properly 2 If the applicable dip switch is not set properly the product may not work properl...

Page 79: ...sing is 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 CH01 CH02 CH03 CH06 Indicated as numbers 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 In...

Page 80: ... 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 Waiting 3 minutes Auto addressing start Power On Press RED Button for 5 sec H P SW0B C O SW02V 7 segment LED 88 Don t press RED Button H P SW0B C O SW02V W...

Page 81: ...trol 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 st 1 number indicate the group number nd 2 number point out indoor unit number 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 group 4...

Page 82: ... 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 All OFF Mode Setting Off Open GND Connection GND GND GND Outdoor Main PCB Insert wire method shows field wiring connected w...

Page 83: ...ever carry out megaohm check over terminal control board Otherwise the control board would be broken Immediately after mounting the unit or after leaving it turned off for an extended length of time the resistance of the insulation between the power supply terminal board and the ground may decrease to approx 2 MOas a result of refrigerant accumulating in the internal compressor If the insulation r...

Page 84: ... Low pressure error or discharge temperature error Motor insulation broken Strainer clogged Oil leakage Motor insulation failure R S T misconnection Motor failure bad ventilation around outdoor heat exchanger Bad connector contact Coil failure EEV clogged EEV clogged Check resistance between terminals and chassis Change strainer Check oil amount after opening oil port Check resistance between term...

Page 85: ...Please confirm if auto addressing function was executed Check the number of installed indoor units 2 Error may occur when the sensor is normal according to the installed location and the temperature conditions When error occurs please check each sensor and decide faultiness DIP Switch Settings Warning Please reset Main PCB before starting this function Setting1 Refrigerant Auto Recharge Setting2 R...

Page 86: ...ndoor unit number follows auto addressing number To check the LGMV Data ex Indoor unit No 2 Pipe inlet temperature sensor error ex Outdoor Master Unit Liquid pipe temperature sensor error No Sensor type 1 Outdoor Air Temperature 2 Heat Exchanger Temperature 5 Liquid Pipe Temperature 6 SC pipe out 7 Suction Temperature 8 Inverter Comp Discharge Temperature 9 Constant Comp 1 Discharge Temperature 10...

Page 87: ...button 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 Main PCB SW01V Completed 2 DIP Switch Settings Warning Please reset Main PCB before starting this function Note 1 After installing the refr...

Page 88: ...aranteed temperature range Error will occur if temperature is out of range IDU 20 C 68 F 32 C 90 F ODU 0 C 32 F 43 C 77 F 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 n Error contents about auto refrigerant charging function 1 Temperature Range Error In ...

Page 89: ...as Liquid 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 j...

Page 90: ...system 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 ran...

Page 91: ...an 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 switch Compl...

Page 92: ...data 10min Temp Condition Press the black button for 2 sec This function is checking process for normal operation of parts and system On operating system All processes carry out included refrigerant amount judge logic and check normal condition of parts on heating mode This function check only normal condition of parts on heating mode Saved data can check using LGMV Note 1 Judge the normal conditi...

Page 93: ...FF 2 Excess of Refrigerant 619 After remove the 20 of calculated total refrigerant recharge the refrigerant by using Refrigerant Auto Charging Function 3 Scarcity of Refrigerant 629 Charge the refrigerant by using Refrigerant Auto Charging Function 4 Impossible to Judge 639 IF the system is not in order check the other problem except refrigerant CAUTION 1 Guaranteed Temperature range Error occurs ...

Page 94: ... 9 8 6 5 10 5 5 9 8 6 5 10 5 12 12 12 5 730 620 510 620 780 680 800 900 Step Cooling Only Heat Pump Capacity Fan Maximum RPM Judgment Time Hr Operation Time Hr 16kW 16 23kW 23 35kW 29 41kW 41 58kW 46 58kW 790 3 4 5 6 7 8 9 56 58 62 53 55 59 50 52 56 47 49 53 Capacity Noise dB 16kW 16 23kW 23 35kW 29 41kW 41 58kW 46 58kW Standard Step Heat Pump Cooling Only Reset the power Setting the Fan Max RPM S...

Page 95: ...N 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 Compressor can t operate DIP Switch Settings Warning Please reset Main PCB before starting this function ...

Page 96: ...gh static pressure mode Set DIP S W Static pressure compensation mode 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 compensation mode is cancelled DIP Switch Settings Warning Please reset SVC Heat Pump Main PCB Cooling only befo...

Page 97: ...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 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 O...

Page 98: ...t DC Voltage Over Charging Master Outdoor Unit Inverter Compressor Fault OR Drive Fault Slave1 Outdoor Unit Inverter Compressor Fault OR Drive Fault Slave2 Outdoor Unit Inverter Compressor Fault OR Drive Fault Slave3 Outdoor Unit Inverter Compressor Fault OR Drive Fault Master Outdoor Unit Inverter Compressor DC link Low Voltage Slave1 Outdoor Unit Inverter Compressor DC link Low Voltage Slave2 Ou...

Page 99: ...by Slave2 Outdoor Unit Constant Speed Compressor2 High Discharge Temperature System is turned off by Slave3 Outdoor Unit Constant Speed Compressor2 High Discharge Temperature System is turned off by Master Outdoor Unit Inverter Compressor High Discharge Temperature System is turned off by Slave1 Outdoor Unit Inverter Compressor High Discharge Temperature System is turned off by Slave2 Outdoor Unit...

Page 100: ... Pressure Sensor open or short Slave1 Outdoor Unit High Pressure Sensor open or short Slave2 Outdoor Unit High Pressure Sensor open or short Slave3 Outdoor Unit High Pressure Sensor open or short Master Outdoor Unit Air Temperature Sensor open or short Slave1 Outdoor Unit Air Temperature Sensor open or short Slave2 Outdoor Unit Air Temperature Sensor open or short Slave3 Outdoor Unit Air Temperatu...

Page 101: ...rge Temperature Sensor open or short Slave3 Outdoor Unit Constant Speed Compressor 2 Discharge Temperature Sensor open or short Master Outdoor Unit Heat Exchanger Temperature Sensor Front side Fault Slave1 Outdoor Unit Heat Exchanger Temperature Sensor Front side Fault Slave2 Outdoor Unit Heat Exchanger Temperature Sensor Front side Fault Slave3 Outdoor Unit Heat Exchanger Temperature Sensor Front...

Page 102: ...Unit Controller part cannot receive inverter control signals usually happens after on boarding Slave3 Outdoor Unit Controller part cannot receive inverter control signals usually happens after on boarding In the case of installing smaller outdoor unit as master unit Master Outdoor Unit Faulty IPM Temperature Sensor Slave1 Outdoor Unit Faulty IPM Temperature Sensor Slave2 Outdoor Unit Faulty IPM Te...

Page 103: ...r of Master Outdoor Unit Constant2 CT Sensor Error of Slave1 Outdoor Unit Constant2 CT Sensor Error of Slave2 Outdoor Unit Constant2 CT Sensor Error of Slave3 Outdoor Unit Instant Over Current Peak of Master Outdoor Unit PFC Instant Over Current Peak of Slave1 Outdoor Unit PFC Instant Over Current Peak of Slave2 Outdoor Unit PFC Instant Over Current Peak of Slave3 Outdoor Unit PFC Master Outdoor U...

Page 104: ...Outdoor Unit Fan MICOM and EEPROM or omitting EEPROM Master Outdoor Unit Fan Over Current Error Slave1 Outdoor Unit Fan Over Current Error Slave2 Outdoor Unit Fan Over Current Error Slave3 Outdoor Unit Fan Over Current Error Master Outdoor Unit Fan Start Failure Error Slave1 Outdoor Unit Fan Start Failure Error Slave2 Outdoor Unit Fan Start Failure Error Slave3 Outdoor Unit Fan Start Failure Error...

Page 105: ...Master Outdoor Unit Fan DC Link Input Voltage is under 380V Slave1 Outdoor Unit Fan DC Link Input Voltage is under 380V Slave2 Outdoor Unit Fan DC Link Input Voltage is under 380V Slave3 Outdoor Uni Fan DC Link Input Voltage is under 380V Liquid pipe temperature sensor of Master Outdoor Unit is open or short Liquid pipe temperature sensor of slave1 Outdoor Unit is open or short Liquid pipe tempera...

Page 106: ...t Display Title Cause of Erro r 1 2 1 1 5 3 4 1 2 1 5 1 3 4 Comp locking Check Valve leakage comp dielectric break down at Master Outdoor Unit Comp locking Check Valve leakage comp dielectric at Slave1 Outdoor Unit Comp locking Check Valve leakage comp dielectric at Slave2 Outdoor Unit Comp locking Check Valve leakage comp dielectric at Slave3 Outdoor Unit Master Outdoor Unit Constant Speed Compre...

Page 107: ... of Slave1 Outdoor Unit Fan PCB Heat Sink Temperature Slave1 Outdoor Unit Fan Inverter PCB Temperature is Over 95 C 3 Excessive increase of Slave2 Outdoor Unit Fan PCB Heat Sink Temperature Slave2 Outdoor Unit Fan Inverter PCB Temperature is Over 95 C 4 Excessive increase of Slave3 Outdoor Unit Fan PCB Heat Sink Temperature Slave3 Outdoor Unit Fan Inverter PCB Temperature is Over 95 C 1 9 4 1 Mast...

Page 108: ...ature Cool Heat Selector 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 Independent Power module Independent power module Solution Accessory ...

Page 109: ...CB and Cool Heat Selector Connect terminals on the back side of Cool Heat Selector to terminal of Outdoor as show k GND GND k GND Outdoor Main PCB Insert wire method shows field wiring connected wiring Push arrow direction Insert wire to connector Push Button Outdoor Dry Contact Back Side k k GND GND GND 1 2 3 4 1 2 3 4 Communication line length can be maximum 300m use communication line as thick ...

Page 110: ...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 111: ...New Function 2 ODU Dry contact with Central controller With Single Outdoor unit With Series Outdoor units _ U CN O T TL T u i V M lt WIRE ASSY 1 1EA BUS_B BUS_A Central Control Devices Multi V WIRE ASSY 1 1EA CN_OUT TTL ...

Page 112: ...ng methods 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 Inp...

Page 113: ...V 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 C...

Page 114: ... 0 1 0 50 0 0 1 COMP OFF 3 0 0 0 No control 1 0 0 7 0 0 1 0 4 0 0 0 1 ALL OFF 4 0 0 0 No control 1 0 0 7 0 0 1 0 5 0 0 0 1 ALL OFF 5 0 0 0 No control 1 0 0 8 0 0 1 0 5 0 0 0 1 ALL OFF 6 0 0 0 No control 1 0 0 5 0 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 1 0 Comp OFF System OFF Signal ...

Page 115: ... Dry contact has 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 30Vv 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...

Page 116: ...ols the EEV kit when the power is turn off If the power Cut off then product need to close EEV power Plug 1st 2nd 3rd A C Switch Main Switch 3 phase 400V 4th 1st 2nd 3rd A C Switch Main Switch 1 phase 220V ODU Each room Switch BOX Each room power Plug Switch BOX Concept of independent power module independent power module option independent power module option ...

Page 117: ...cedure 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 of ...

Page 118: ...d with 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 m 3 Total amount of replenished refrigerant in refrigerant facility kg Capacity of smallest room where 3 indoor unit is installed m In ...

Page 119: ...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 opposite side of the ...

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