LG Multi V miniARUN Series Installation Manual
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LG Multi V miniARUN Series Installation Manual

Outdoor system
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Outdoor Unit
INSTALLATION MANUAL
MODELS: ARUN Series ARUV Series
(1Ø, 220~240V, 50Hz / 1Ø, 220V, 60Hz)
website http://www.lgservice.com
System
R410A
IMPORTANT
• 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.
LG

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  • Page 1 website http://www.lgservice.com System Outdoor Unit R410A INSTALLATION MANUAL MODELS: ARUN Series ARUV Series (1Ø, 220~240V, 50Hz / 1Ø, 220V, 60Hz) IMPORTANT • 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.

  • Page 2: Table Of Contents

    ARUN Series Outdoor Unit Installation Manual TABLE OF CONTENTS 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 ......18 Electrical Wiring ......37 Test Run ...........51 Caution For Refrigerant Leak..60 Installation guide at the seaside..62 Outdoor Unit...

  • Page 3: Safety Precautions

    Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. This symbol indicates the possibility of death or serious injury.
  • Page 4 Safety Precautions When installing and moving the air conditioner Do not reconstruct to change the settings of to another site, do not charge it with a the protection devices. different refrigerant from the refrigerant specified on the unit. • If a different refrigerant or air is mixed with the •...
  • Page 5 Safety Precautions I Installation Always check for gas (refrigerant) leakage Do not install the product where the noise or after installation or repair of product. hot air from the outdoor unit could damage the neighborhoods. • Low refrigerant levels may cause failure of •...
  • Page 6 Safety Precautions 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 leakage. Be very careful about product transportation. • Only one person should not carry the product if it weighs more than 20 kg. •...

  • Page 7: Installation Process

    Installation Installation Process Indicate clearly who is to be responsible for switch settings Determination of division work Make relationship between outdoor, indoor, remote controller, and option connections clear. Preparation of contract drawings (Prepare control circuit diagram) Take account of gradient The foundation must be level even Sleeve and insert work Outdoor unit foundation work...

  • Page 8: Outdoor Units Information

    Outdoor Units Information Outdoor Units Information CAUTION Ratio of the connectable Indoor Units to the Outdoor: Within 50 ~ 130% Ratio of running Indoor Units to the Outdoor: Within 10 ~ 100% A combination operation over 100% cause to reduce each indoor unit capacity. Power Supply: Outdoor Unit (1Ø, 220~240V, 50Hz/1Ø, 220V, 60Hz) System(HP) Model...

  • Page 9: Before Installation

    Before Installation Before Installation Environment-friendly Alternative Refrigerant R410A • 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 considered during the installation. R410A is an azeotrope of R32 and R125 mixed at 50:50, so the ozone depletion potential (ODP) of R410A is 0.

  • Page 10: Select The Best Location

    Select the Best Location Select the Best Location 1. Select space for installing outdoor unit, which will meet the following conditions: • No direct thermal radiation from other heat sources • No possibility of annoying neighbors by noise from unit •...

  • Page 11: Installation Space

    Installation Space Installation Space • The following values are the least space for installation. If any service area is needed for service according to field circumstance, obtain enough service space. • The unit of values is mm. I In case of obstacles on the suction side 1.
  • Page 12 Installation Space I In case of obstacles on the discharge side 1. Stand alone installation 2. Collective installation [Unit:mm] I In case of obstacles on the suction and the discharge side ➲ Obstacle height of discharge side is higher than the unit 1.
  • Page 13 Installation Space 2. Collective installation L > H L > H [Unit:mm] ➲ Obstacle height of discharge side is lower than the unit 1. Stand alone installation L ≤ H L ≤ H 2. Collective installation L ≤ H L ≤ H [Unit:mm] Installation Manual 13...
  • Page 14 Installation Space Collective / Continuous Installation for roof top use Space required for collective installation and continuous installation: When installing several units, leave space between each block as shown below considering passage for air and people. 1. One row of stand alone installation [Unit:mm] 2.

  • Page 15: Installation

    Installation Installation Foundation for Installation • 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.) •...

  • Page 16: Preparation Of Piping

    Installation Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. 1) Cut the pipes and the cable. I Use the accessory piping kit or the pipes purchased Copper Slanted Uneven Rough locally.
  • Page 17 Installation FLARE SHAPE and FLARE NUT TIGHTENING TORQUE Precautions when connecting pipes • See the following table for flare part machining dimensions. • When connecting the flare nuts, apply refrigerant oil to the inside and outside of the flares and turn them three or four times at first.

  • Page 18: Refrigerant Piping

    Refrigerant Piping Refrigerant Piping I Connecting the pipes to the outdoor unit 1. Liquid pipe • Align the center of the pipings and sufficiently tighten the flare nut with fingers. • Finally, tighten the flare nut with torque wrench until the wrench clicks.
  • Page 19 Refrigerant Piping Cautions for Handling Service Valve • The service valves are closed at shipment from the factory CAUTION Make sure to keep the valve open during operation The names of parts of the service valve are shown in the figure. 1.
  • Page 20 Refrigerant Piping Caution 1. Use the following materials for refrigerant piping. • Material: Seamless phosphorous deoxidized copper pipe • Wall thickness : Comply with the relevant local and national regulations for the designed pressure 3.8MPa. We recommend the following table as the minimum wall thickness. Outer diameter 6.35 9.52...
  • Page 21 Refrigerant Piping Refrigerant piping Taping Pipe to be brazed Valve Nitrogen Pressure-reducing valve WARNING When installing and moving the air conditioner to another site, be sure to make recharge refrigerant after perfect evacuation. - If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.
  • Page 22 Refrigerant Piping Selection of Refrigerant Piping Outdoor unit Gas pipe Liquid pipe Branching pipe Main pipe Indoor unit Branching pipe Piping parts Name Selection of pipe size Size of main pipe Liquid pipe Gas pipe Outdoor unit Outdoor unit capacity type [mm(inch)] [mm(inch)] Main pipe...
  • Page 23 Refrigerant Piping Allowable Length/Height Difference of Refrigerant Piping I Y Branch Method Example : 5 Indoor Units connected : Outdoor Unit : 1st branch (Y branch) : Indoor Units L150m l 40m ➲ Total pipe length = A+B+C+D+a+b+c+d+e ≤ 300m Longest pipe length Equivalent pipe length A+B+C+D+e ≤...
  • Page 24 Refrigerant Piping I Header Method Example : 6 Indoor Units connected : Outdoor Unit : 1st branch : Indoor Units : Sealed piping L 150m ➲ Total pipe length = A+a+b+c+d+e+f ≤ 300m Longest pipe length * Equivalent pipe length A+f ≤...
  • Page 25 Refrigerant Piping I Combination of Y branch/header method Example : 5 Indoor Units connected : Outdoor Unit : 1st branch (Y branch) : Y branch : Indoor Unit : Header : Sealed piping L 150m Branch pipe can not be used after header ➲...
  • Page 26 Refrigerant Piping The Amount of Refrigerant 1. Normal condition The calculation of the additional charge should take into account the length of pipe. Product Charge(kg) Example : 5 HP Additional charge (kg) Total liquid pipe (m) Additional refrigerant charge amount per liquid pipe 1m (Table 1) Ø9.52:10m Ø9.52:10m...
  • Page 27 Refrigerant Piping CAUTION If a negative result is obtained from the calculation, no refrigerant needs to be added. WARNING Regulation for refrigerant leakage : the amount of refrigerant leakage should satisfy the following equation for human safety. Total amount of refrigerant in the system 0.44 ( kg / m Volume of the room at which Indoor Unit of the least capacity is installed If the above equation can not be satisfied, then follow the following steps.
  • Page 28 Refrigerant Piping Distribution Method 1. Line Distribution 3rd main pipe distribution Main pipe Distribution Main pipe Distribution 2. Vertical Distribution Ensure that the branch pipes are attached vertically. 3. The others Header Outdoor Unit...
  • Page 29 Refrigerant Piping Branch Pipe Fitting Y branch To Outdoor Unit To Branch Piping or Indoor Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.) Horizontal Facing Facing plane downwards upwards Within +/- 10° Viewed from point A in direction of arrow Within ±...
  • Page 30 Refrigerant Piping • When the number of indoor units to be connected to the branch pipes is less than the number of branch pipes available for connection then cap pipes should be fitted to the surplus branches. Pinched pipe • Fit branch pipe lie in a horizontal plane. Horizontal plane View from point B in the direction of the arrow •...
  • Page 31 Refrigerant Piping Selection of Y Branch and Header 1. Y Branch [Unit:mm] Models Gas pipe Liquid pipe I.D. 12.7 I.D6.35 I.D12.7 I.D. 15.88 I.D9.52 I.D9.52 ARBLN01621 I.D6.35 I.D. 15.88 I.D12.7 I.D6.35 I.D. 15.88 I.D9.52 I.D19.05 I.D12.7 O.D15.88 O.D9.52 I.D19.05 I.D19.05 I.D22.2 I.D15.88 I.D9.52...
  • Page 32 Refrigerant Piping 2. Header [unit:mm] Models Gas pipe Liquid pipe I.D Ø12.7 I.D Ø12.7 I.D Ø6.35 I.D Ø6.35 I.D Ø15.88 I.D Ø15.88 I.D Ø9.52 I.D Ø9.52 4 branch I.D Ø12.7 I.D Ø19.05 ARBL054 O.D Ø19.05 I.D Ø12.7 O.D Ø12.7 I.D Ø9.52 I.D Ø15.88 I.D Ø12.7 I.D Ø15.88...

  • Page 33: Thermal Insulation Of Refrigerant Piping

    Refrigerant Piping Thermal Insulation of Refrigerant Piping 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.

  • Page 34: Leak Test And Vacuum Drying

    Refrigerant Piping Leak Test and Vacuum Drying 1. Leak test Leak test should be made by pressurizing nitrogen gas to 3.8 MPa(38.7kgf/cm ). If the pressure does not drop for 24 hours, the system passes the test. If the pressure drops, check where the nitrogen leaks. For the test method, refer to the following figure.
  • Page 35 Refrigerant Piping 2. Vacuum Vacuum drying should be made from the service port provided on the outdoor unit’s service valve to the vacuum pump commonly used for liquid pipe, gas pipe. Vaccum of the pipe and the indoor units should be made from the port of the outdoor unit's service valve with the service valve closed.

  • Page 36: Refrigerant Charging

    Refrigerant Piping 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 valve during operation. Charging during Open Open cooling operation Refrigerant cylinder CAUTION...

  • Page 37: Electrical Wiring

    Electrical Wiring Electrical Wiring Electrical Wiring 1. Caution 1) Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. WARNING Be sure to have authorized electrical engineers do the electric work using special circuits in accordance with regulations and this installation manual.
  • Page 38 Electrical Wiring Outdoor Unit Outdoor Unit Indoor Indoor Indoor Indoor Unit Unit Unit Unit Remote Remote Remote Remote control control control control Outdoor Unit Outdoor Unit Indoor Indoor Indoor Indoor Unit Unit Unit Unit Remote Remote Remote Remote control control control control 2-Core Shield Cable...
  • Page 39 Electrical Wiring 2. Transmission and Power Lines 1) Transmission cable • Types : shielding wire CVVS or CPEVS • Diameter : over 1.25mm • Insulation material : PVC • Maximum allowable temperature: 60°C • Maximum allowable line length: 300m 2) Remote control cable •...

  • Page 40: Wiring Of Main Power Supply And Equipment Capacity

    Electrical Wiring Wiring of Main Power Supply and Equipment Capacity Outdoor unit (1Ø, 220~240V, 50Hz / 1Ø, 220V, 60Hz), Indoor unit (1Ø, 220V, 50Hz/60Hz) 1. Separate power supply lines for the indoor units from outdoor unit. 2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
  • Page 41 Electrical Wiring N Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. Power wire Round pressure terminal 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.) •...

  • Page 42: 42 Outdoor Unit

    Electrical Wiring Example Connection of Transmission Cable 1. 50Hz I 1 Outdoor Unit - 1Ø, 220~240V Single Phase 3 wire(L,N,GND) Transmission line (3 line): Wired remote control Single Phase of power supply line(L, N) Power supply switch Single Phase 3 wire Transmission line (2 shield line): Between Indoor Unit and Outdoor Unit (Switch fuse : ELCB) ( L, N ,GND)
  • Page 43 Electrical Wiring 2. 60Hz I 1 Outdoor Unit - 1Ø, 220V Single Phase 3 wire(L,N,GND) Transmission line (3 line): Wired remote control Single Phase of power supply line(L, N) Power supply switch Single Phase 3 wire Transmission line (2 shield line): Between Indoor Unit and Outdoor Unit (Switch fuse : ELCB) ( L, N ,GND) Power supply...

  • Page 44: Dip Switch Setting

    Electrical Wiring DIP Switch Setting I Location of setting Switch Main PCB SW01B SW02B (DIP S/W) (DIP S/W) 7 - Segment SW02V Auto addressing SW01V Data confirm I Checking according to dip switch setting 1. You can check the setting values of the outdoor unit from the 7 segment LED. The dip switch setting should be changed when the power is OFF.
  • Page 45 Electrical Wiring I Setting the DIP switch (SW03M) • Set the dip switch with the power turned off. If you change the setting when the power is on, the changed setting is not applied immediately. The changed setting is applied at the moment that the power is on. •...
  • Page 46 Electrical Wiring Function Function SW01B Setting SW01B Setting SW02B Setting SW02B Setting Remarks Remarks Used when snow piles up On the ODU Fan. Snow Fan operates periodically. 9 10 11 12 13 14 Forced Accelerates defrost Defrosting operation 9 10 11 12 13 14 Power reset is necessary Night Silent Fan RPM down...
  • Page 47 Electrical Wiring Automatic Addressing • The address of indoor units would be set by auto addressing 1) Wait for 3 minutes after applying power supply SW01B SW02B (outdoor unit, indoor unit). (DIP S/W) (DIP S/W) 2) Press the switch of the outdoor unit (SW02V) for 5 seconds.
  • Page 48 Electrical Wiring N The Procedure of Automatic Addressing Power On Waiting 3 minutes Press SW02V for 5 sec. Auto addressing start 7-segment LED = 88 • Auto addressing setting end Waiting about 2~7 minutes Numbers of indoor unit connection set whose addressing is completed are indicated for 30seconds on 7-segment LED after completing setting Check the connections...
  • Page 49 Electrical Wiring Group Number Setting I Group Number setting for Indoor Units Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off. The transmission lines connected to INTERNET terminal should be connected to central control of Outdoor unti with care for their polarity( A ¡...
  • Page 50 Push Button I Without Cool/Heat Selector 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.

  • Page 51: Test Run

    Test Run Test Run Checks before Test Run Check to see whether there is any refrigerant leakage, and slack of power or transmission cable. Confirm that 500 V megger shows 2 MΩ or more between power supply terminal block and ground. Do not operate in the case of 2 MΩ...

  • Page 52: How To Cope With Test Run Abnormality

    Test Run How to cope with Test Run Abnormality The phenomena from master component failure Component Phenomenon Cause Check method and Trouble shooting Not operating Motor insulation broken Check resistance between terminals and chassis Strainer clogged Change strainer Compressor Oil leakage Check oil amount after opening oil port Stop during running Motor insulation failure...

  • Page 53: Sensor Checking Function

    Test Run Sensor Checking Function Note 1) Sensor checking function judges whether the current temperature of indoor and outdoor unit sensors is right or not. It checks 3 indoor temperature sensors, 9 outdoor temperature sensors, 2 outdoor pressure sensors. It is used for judging sensor abnormality. Note 2) Start Note...
  • Page 54 Test Run Sensor Check Error Code Display In case error occurs during sensor checking process, error display is as shown below. Following contents are displayed one after the other on the main PCB of outdoor unit. Indoor sensor error : Outdoor sensor error : Displaying error content Displaying error content...

  • Page 55: Refrigerant Checking Function

    Test Run Refrigerant Checking Function This function charges appropriate amount of refrigerant automatically through cycle operation. This function judges refrigerant leakage and overcharging. Start Note 1. In case air temperature is out of guaranteed Main temperature, refrigerant checking function may end Wait for 3 min.
  • Page 56 Test Run CAUTION 1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range) IDU : 20~32°C (buffer ±1°C) ODU : 10~38°C (buffer ±1°C) 2. Set IDU wired remote controller temperature sensor setting as 'IDU'. 3. Make certain that IDU doesn't run with thermo off mode during operation. [ Error contents about auto refrigerant charging function ] : Temperature Range Error (In case that IDU or ODU is out of range) : System Unstable Error (In case, After 45 min operating the system, it does not be stable)

  • Page 57: Night Silent Operation

    Test Run Night Silent Operation In cooling mode, this function makes the ODU fan operate at low RPM to reduce the fan noise of ODU at night which has low cooling load. Max. RPM setting method DIP switch No.12+14 ON SW01B Main PCB power reset SW01S...
  • Page 58 Test Run Self-Diagnosis Function Error Indicator • This function indicates types of failure in self-diagnosis and occurrence of failure for air condition. • Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as shown in the table.
  • Page 59 Test Run Display Title Cause of Error Outdoor Unit Inverter Compressor System is turned off by outdoor unit Inverter High Discharge Temperature Compressor High Discharge Temperature High Pressure of Outdoor Unit System is turned off by excessive increase of high pressure of outdoor unit Low Pressure of Outdoor Unit System is turned off by excessive decrease of low...

  • Page 60: Caution For Refrigerant Leak

    Caution For Refrigerant Leak Caution for Refrigerant Leak The installer and system specialist shall secure safety against leakage according to local regulations or standards. The following standards may be applicable if local regulations are not available. Introduction Though the R410A refrigerant is harmless and incombustible itself , the room to equip the air conditioner should be large enough to such an extent that the refrigerant gas will not exceed the limiting concentration even if the refrigerant gas leaks in the room.
  • Page 61 Caution For Refrigerant Leak (3) With partition and without opening which serve as passage of air to adjoining room Outdoor unit Indoor unit Smallest room I Calculate refrigerant concentration Total amount of replenished In case the result of calculation exceeds refrigerant in refrigerant facility (kg) ≤...

  • Page 62: Installation Guide At The Seaside

    3) Select a well-drained place. 1. If you can’t meet above guide 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...
  • Page 63 The below Installation guide is limited applicable only for model ARUN60GS2 Installation Guide for EN 61000-3-12:2005 This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal 1032 kVA at the interface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, 1032 that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to...
  • Page 64 Memo Outdoor Unit...
  • Page 65 P/No.: 3828A24002Y Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.

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Multi v mini aruv series

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