LG Multi V ARWN Series, Installation Manual

Page 1: ...etely 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 your set and retain it for future reference MODELS ARWN Series ENGLISH ...

Page 2: ...ified 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 and operated forcibly or parts other than those specified by LGE are used fire or explosion may res...

Page 3: ...transportation Only one person should not carry the product if it weighs more than 20 kg Some products use PP bands for packaging Do not use any PP bands for a means of transportation It is dangerous Do not touch the heat exchanger fins Doing so may cut your fingers When transporting the outside unit suspending it at the specified positions on the unit base Also support the outside unit at four po...

Page 4: ... unit s 130 OUTSIDE UNITS INFORMATION Power Supply 3Φ 380 415V 50Hz Model Name ARWN LAS4 Unit 1 Unit System Capacity HP 8 10 12 Model Combination Unit ARWN080LAS4 ARWN100LAS4 ARWN120LAS4 Independent Unit ARWN080LAS4 ARWN100LAS4 ARWN120LAS4 RefrigerantPrechargedAmount kg 5 5 3 4 3 5 MaximumConnectableNumberofIndoorUnits 13 16 20 Net Weight kg 127 x 1 127 x 1 127 x 1 lbs 280 x 1 280 x 1 280 x 1 Dime...

Page 5: ...AS4 ARWN120LAS4 3 0 3 5 3 4 3 0 3 5 3 5 3 0 5 8 3 5 64 64 64 140 x 1 127 x 2 140 x 1 127 x 2 140 x 1 127 x 2 309 x 1 280 x 2 309 x 1 280 x 2 309 x 1 280 x 2 755 997 500 x 3 755 997 500 x 3 755 997 500 x 3 29 23 32 x 39 1 4 x 19 11 16 x 3 29 23 32 x 39 1 4 x 19 11 16 x 3 29 23 32 x 39 1 4 x 19 11 16 x 3 19 05 3 4 19 05 3 4 19 05 3 4 41 3 1 5 8 41 3 1 5 8 41 3 1 5 8 PT 40 PT 40 PT 40 PT 40 PT 40 PT ...

Page 6: ...y generate electric noise Keep the body from computer stereo etc at enough distance Specially leave space from indoor remote controller to shoes electric devices at the above 3m in weak electric wave area Insert the power cable and other wire into separate conduit Unit 4 Unit System Capacity HP Model Combination Unit Independent Unit RefrigerantPrechargedAmount kg MaximumConnectableNumberofIndoorU...

Page 7: ...th the pump before dropping the tempera ture Keep the normal temperature by boiler When the cooling tower is not operated for a long time drain the water in the cooling tower Use an anti freeze For using an anti freeze change the DIP switch on main PCB in outside unit Refer to the additive amount about freezing temperature as in the table given below In addition to anti freeze it may cause the cha...

Page 8: ...water temperature is 40 C or above or when un coated iron is exposed to the water it can result in corrosion Therefore adding anti corrosion agent or removing the air can be very effective In case of using the closed type cooling tower the cooling water and supplementing water must satisfy the water quality criteria of closed type system in the table Supplementing water and supplied water must be ...

Page 9: ...the cable 1 5m longer than the pipe length Pipe Reamer Point down Copper tube 90 Slanted Uneven Rough Preparation of Piping Burrs removal Completely remove all burrs from the cut cross section of pipe tube Put the end of the copper tube pipe to downward direction as you re move burrs in order to avoid to let burrs drop in the tubing Flaring work Carry out flaring work using flaring tool as shown b...

Page 10: ...rant pipe EPDM heat insulation material thickness Classification Air conditioned location Non air conditioned location Note1 General location Note2 Special location Note3 General location Note4 Negative condition Liquid pipe Ø6 35 Above t9 Above t9 Above t9 Above t9 Ø9 52 Above Ø12 7 Above t13 Above t13 Above t13 Above t13 Gas pipe Ø9 52 Above t13 Above t19 Above t19 Above t25 Ø12 7 Ø15 88 Ø19 05 ...

Page 11: ...n dioxide and a Chevron gas Please use the following nitrogen 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 2 Always use a pressure reducing valve 3 Please do not use commercially available antioxidan...

Page 12: ...rant piping differs use a pipe cutter to cut the connecting section and then use an adapter 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 heat ing cooling performance 9 The Multi V will stop due to an a...

Page 13: ...ROTECTION UNIT Upper graph is a theoretical value for selection and it may be different according to specification of strainer To protect the water cooling type product you must install a strainer with 50 mesh or more on the heat water supply pipe If not installed it can result in damage of heat exchanger by the follow ing situation 1 Heat water supply within the plate type heat exchanger is com p...

Page 14: ... heat exchanger When the product operates while the flow switch touches the contact point at the flow rate range out of the permitted range it can cause product performance deterioration or serious prod uct problem Must use the normal closed type flow switch Circuit of outside unit is normal closed type Y branch method Combination of Y branch header method Header method Ⓐ Outside Unit Ⓑ 1st branch...

Page 15: ...ave 1 Slave 2 Slave 3 C C C C C C Pipe Connection Method between outside unit indoor unit h See Table 2 A Refrigerant pipe diameter from outside unit to first branch E Refrigerant pipe diameter for outside unit capacity Slave 1 Slave 2 Slave 3 F Refrigerant pipe diameter for outside unit capacity Slave 2 Slave 3 G Refrigerant pipe diameter for outside unit capacity Slave 3 L1 L2 L3 L4 H1 E G F Sla...

Page 16: ...ipe connection between outside unit s General Case The maximum pipe length after the first branching between the outside unit is 10m or les Pipes between outside unit s are 2m or less 2m or less Pipes between outside unit s are 2m or longer Oil Trap Oil Trap Oil Trap 2m or less 2m or less 2m or less 0 2m or more 2m or longer 2m or longer 2m or longer Oil trap application method between outside unit...

Page 17: ...oward indoor unit Oil Trap Example 3 The amount of Refrigerant The calculation of the additional charge should take into account the length of pipe and CF correction Factor value of indoor unit Total liquid pipe Ø25 4 mm Additional charge kg Total liquid pipe Ø22 2 mm Total liquid pipe Ø19 05 mm Total liquid pipe Ø15 88 mm Total liquid pipe Ø12 7 mm Total liquid pipe Ø9 52 mm Total liquid pipe Ø6 ...

Page 18: ...stribution Method WARNING Regulation for refrigerant leakage the amount of refrigerant leakage should satisfy the following equation for human safety If the above 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 Outside Unit capacity and piping length Reduction of the ...

Page 19: ...n taped as described above Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure Insulator Insulator of field pipe Tape Tape Cap pipe Insulator for cap pipe Y branch pipe Models Gas pipe Liquid pipe ARBLN 01621 I D19 05 O D15 88 I D12 7 I D15 88 I D12 7 I D15 88 I D15 88 I D12 7 292 281 74 70 I D12 7 O D9 52 I D6 35 I D9 52 I D 9 52 I D 6 35 I D9 52...

Page 20: ...ture at 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 c...

Page 21: ...r unit PCB Vacuum Mode DIP SWITCH 7 Segment SW01C confirm SW02C backward forward SW04C X cancel SW01D reset SW03C ȭ ȯ Ɨ Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat resistant poly ethylene so that no gap is observed in the joint between indoor unit and insulating material and insulating materials themselves When in ...

Page 22: ...re shield cable for communication cable O mark in the figure below If communication cable of different systems are wired with the same multiplecore cable the resultant poor transmitting and re ceiving will cause erroneous operations mark in the figure below Only the communication cable specified should be connected to the terminal block for Outside Unit communication CAUTION Be sure to correct the...

Page 23: ...in the signal wiring caused by electrostatic and electro magnetic coupling The tables below indicates our recommendation as to appropriate spacing of communication and power cables where these are to be run side by side Current capacity of power cable Spacing 100V or more 10A 300mm 50A 500mm 100A 1000mm Exceed 100A 1500mm Main PCB Noise Filter External PCB Take care of the phase sequence of 3 phas...

Page 24: ... firmly it may cause heating or fire Make sure to use the appropriate type of overcurrent protection switch Note that generated overcurrent may include some amount of direct current Field Wiring Single outside unit R S T N Switch Fuse L N Communication cable 2 Wires Cable Power cable 4 Wires Cable Communication cable 3 Wires Cable Power cable 2 Wires Cable Power cable 2 Wires Cable Power cable 2 W...

Page 25: ...round wires 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 because...

Page 26: ... on 7 segment LED after completing setting Indoor address number is displayed 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 Automatic addressing is completed normally Automatic addressing start Waiting 3 minutes Power On Press RED Button...

Page 27: ...s set Function setting Switch control Function Switch Phase Switch Bottom OFF op1 mode op2 mode Right Left Not operate Cooling Cooling Right Right Not operate Heating Heating Left Not operate Fan mode Off CAUTION Request the function settings to the installation specialist during the outside unit installation When the function is not used set it to OFF If use a function first install a Cool Heat s...

Page 28: ...220V output It is the function to select 220V output when you want solenoid valve control How to set the mode Geothermal mode setting If you want to use the product with heat source water of the low tem perature such as ground heat it is the function that enables the use of ground heat mode How to set the mode Mode setting ON Set to operate in geothermal mode OFF Set to operate in general mode Tur...

Page 29: ...power consumption 2 5 C 4 C op4 Decrease power consumption Decrease power consumption 4 5 C 6 C CAUTION Request the function settings to the installation specialist during the outside unit installation When the function is not used set it to OFF If the temperature of the outside unit installation place is 0 C or less we recommend the connection and usage of Sump Heater Use Sump Heater It is the fu...

Page 30: ... outside units Execute the test of water supply system without operating the product Check whether outside unit inlet outlet flow rate complies to the product specification Standard Water volume is 96LPM based on 10HP and 196LPM based on 20HP Check the water supply temperature whether is OK After checking the normal condition of the water supply execute the test run of the product To prevent the fre...

Page 31: ...checking can be required depending on the oper ating condition water quality condition When cleaning the heat exchanger make sure to take parts out or lock the value so that chemical detergent does not penetrate into the pressure gauge etc When cleaning the heat exchanger check the connecting part of the water pipes prior to cleaning so that the chemical detergent does not leak After sufficiently ...

Page 32: ...er compressor operation failure error Master outside unit inverter DC link over voltage error Master outside unit inverter compressor overcurrent Master outside unit inverter compressordischarge temperature over rise Master outside unit high pressure over rise Air temperature sensor of indoor unit is open or short Inlet pipe temperature sensor of indoor unit is open or short Failing to receive wir...

Page 33: ...under low Compression limit for 3 minutes Master Outside unit inverter compressor current detection CT sen sor disconnection or short circuit Master outside unit inverter compressor current detection CT sen sor disconnection or short circuit Master outside unit inverter compressor discharge temperature sensor disconnection or short circuit Master Outside Unit Low Pressure Sensor open or short Mast...

Page 34: ...scribed in the unit of kg m3 Freon gas weight per unit air volume for facilitating calculation Limiting concentration 0 44kg m3 R410A Amount of additional replenished refrigerant Total amount of replenished refrigerant in refrigerant facility kg Note In case one refrigerant facility is divided into 2 or more refrigerant systems and each system is independent amount of replenished refrigerant of ea...

Page 35: ...ning effective to ventilation Indoor unit Pay a special attention to the place such as a basement etc where refrigerant can stay since refrigerant is heavier than air WATER SOLENOID VALVE CON TROL COOLING TOWER APPLIED METHOD Central Control Use DDC Port Individual Control Use 220V Output Port Water In BMS Building Management System Water Out Solenoid Valve CN_18 220 V Out CN_22 to DDC PI 485 DDC ...

Page 36: ...ls the requirement above If necessary the user can ask the public power supply com pany for the system impedance at the interface point The below Installation guide is limited applicable only for model Model ARWN200LAS4 ARWN180LAS4 ARWN160LAS4 Installation Guide for Harmonics EN 61000 3 2 EN 61000 3 12 Installation Guide for Flicker EN 61000 3 3 EN 61000 3 11 This equipment complies with IEC EN 61...

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