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LG ARUN096BT2 Installation Manual

Arun series multi v system plus ii
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Outdoor Unit

INSTALLATION MANUAL

MODELS: ARUN Series
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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  Summary of Contents for LG ARUN096BT2

  • Page 1: Installation Manual

    website http://www.lgservice.com System Outdoor Unit R410A INSTALLATION MANUAL MODELS: ARUN Series 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: Outdoor Unit

    IMPORTANT! Please read this instruction sheet completely before installing the product. This air conditioning system meets strict safety and operating standards. As the installer or service person,it is an important part of your job to install or service the system so it operates safely and efficiently.
  • Page 3: Table Of Contents

    ARUN Series Outdoor unit Installation Manual Safety Precautions TABLE OF CONTENTS Safety Precautions....................4 Installation Process ....................8 Outdoor units Information ...................9 Environment-friendly Alternative Refrigerant R410A ........12 Select the Best Location ..................12 Installation Space ....................13 Lifting method .....................17 Installation ......................18 Refrigerant piping installation ................20 Electrical Wiring....................47 Test Run.......................69 Caution For Refrigerant Leak ................87...
  • Page 4: Safety Precautions

    Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. 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 5 Safety Precautions When installing and moving the air condition- Do not reconstruct to change the settings of er 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 6 Safety Precautions Keep level even when installing the product. Do not install the unit where combustible gas may leak. • To avoid vibration or water leakage. • If the gas leaks and accumulates around the unit, an explosion may result. Use power cables of sufficient current Do not use the product for special purposes, carrying capacity and rating.
  • Page 7 Safety Precautions Be very careful about product 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.
  • Page 8: Installation Process

    Installation Process 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 9: Outdoor Units Information

    Installation Process Outdoor units Information CAUTION: Ratio of the connectable Indoor Units to the Outdoor: Within 50 ~ 130% Ratio of the running Indoor Units to the Outdoor: Within 10 ~ 100% A combination operation over 100% cause to reduce the total capacity. Power Supply: Outdoor Unit (3Ø, 460V, 60Hz) Heat pump Unit...
  • Page 10 41.3(1 5/8) 41.3(1 5/8) Power Supply: Outdoor Unit (3Ø, 208/230V, 60Hz) Heat pump Unit 1 Outdoor Unit 2 Outdoor Units System 11.0 Model Combination unit ARUN076BT2 ARUN096BT2 ARUN115BT2 ARUN154BT2 Independent unit ARUN076BT2 ARUN076BT2 Product Charge kg(lbs) 8(17.6) 8(17.6) 8(17.6) 8+8(17.6+17.6)
  • Page 11 Outdoor Units Information Unit 2 Outdoor Unit System 14.5 16.0 17.5 19.0 Model Combination unit ARUN173BT2 ARUN192BT2 ARUN211BT2 ARUN230BT2 ARUN096BT2 ARUN096BT2 ARUN115BT2 ARUN115BT2 Independent unit ARUN076BT2 ARUN096BT2 ARUN096BT2 ARUN115BT2 Product Charge kg(lbs) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) 8+8(17.6+17.6) CF(Correction Factor) kg(lbs) -1(-2.2) 0(0) 1(2.2)
  • Page 12: Environment-Friendly Alternative Refrigerant R410A

    Environment-friendly Alternative Refrigerant R410A 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 character- istic 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 13: Installation Space

    Installation Space Installation Space Individual Installation Basic space required A space of at least 250mm(9-13/16 inch) is necessary at the back for inlet air. Taking servicing, etc. from the rear into account, a space of about 915mm(36 inches) should be provided, the same as at the front. 915mm(36 inches) or more (Control box is open/close type) Rear Side 250mm(9-13/16 inch) or more...
  • Page 14 Installation Space When unit is surrounded by walls 915mm(36 inches) or more (Control box is of a open/close type) 250mm(9-13/16 inch) or more Rear Side Rear Side Front Side Front Side Rear Side Front Side When there is an obstruction above the unit 45 or more 200mm(7-7/8 inch) or more 250mm(9-13/16 inch) or more...
  • Page 15 Installation Space Collective / Continuous installation 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. (Be opened) 915mm(36 inches) or more (control box is of a open/close type) 250mm(9-13/16 inch) or more 150mm(5-7/8 inch) or more Rear Side...
  • Page 16 Installation Space Seasonal wind and cautions in winter • Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well. • Get ready for seasonal wind or snow in winter even in other areas. •...
  • Page 17: Lifting Method

    Lifting Method Lifting method • When carrying the suspended, unit pass the ropes under the unit and use the two suspension points each at the front and rear. • Always lift the unit with ropes attached at four points so that impact is not applied to the unit. •...
  • Page 18: Installation

    Installation Installation Location of anchor bolt(To be applied to 1, 2, 3 Units installation) Individual installation 10(3/8) 10(3/8) 900 2 900 2 900 2 (35-7/16 1/16) (15-1/16) (35-7/16 1/16) (15-1/16) (35-7/16 1/16) Collective installation 10(3/8) 10(3/8) 10(3/8) 10(3/8) 900 2 900 2 900 2 900 2...
  • Page 19 Installation Foundation for Installation • Fix the unit tightly with bolts as shown below so that unit will not fall down due to earthquake or gust. • Use the H-beam support as a base support • Noise and vibration may occur from the floor or wall since vibration is transferred through the installation part depending on installation status.
  • Page 20: Refrigerant Piping Installation

    Refrigerant piping installation Refrigerant piping installation WARNING Always use extreme care to prevent the refrigerant gas (R410A) from leakage while using fire or flame. If the refrigerant gas comes in contact with the flame from any source, such as a gas stove, it breaks down and generates a poisonous gas which can cause gas poisoning.
  • Page 21 Refrigerant piping installation Connection of High/Low Pressure Common pipe Slave Slave2 Outdoor Unit Outdoor Unit Slave1 Outdoor Master Master Unit Outdoor Unit Outdoor Unit 2 outdoor units 3 outdoor units 1. For the High/Low Pressure Common pipe, connect both Master Outdoor Unit and Slave (1, 2, 3) Outdoor Unit to the pipe (field supply) by using elbows (field supply) 2.
  • Page 22 Refrigerant piping installation Connection of Outdoor units 2 outdoor units Model Unit: mm(inch) Connection of gas pipe Connection of liquid pipe Blow nitrogen while Master outdoor brazing Ø 34.9(1-3/8) Don't cut the pipe less than liquid pipe Master outdoor 70mm(2-3/4inch) Ø...
  • Page 23 Refrigerant piping installation 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 24 Refrigerant piping installation 12. Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling perfor- mance, 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 Units has been connected, a refrigerant leakage test has been performed and the evacuation process has been completed.
  • Page 25: Outdoor Units

    Refrigerant piping installation Refrigerant piping system Y branch method 1 Outdoor Units Example : 5 Indoor Units connected : Outdoor Unit : 1st branch (Y branch) : Indoor Units L150m(492ft) (200m(656ft) : Conditional application) l 40m(131ft) (90m(295ft) : Conditional application) 15m(49ft) 2 Outdoor Units Slave...
  • Page 26 3 Outdoor Units Slave2 Example : 5 Indoor Units Slave1 Master connected : Outdoor Unit (32.8ft) : 1st branch (Y branch) less : Indoor Units : Downward Indoor Unit : Connection branch pipe L150m(492ft) (200m(656ft) : Conditional application) between Outdoor units: l 40m(131ft) (90m(295ft) : Conditional application) ARCNN30 : Connection branch pipe...
  • Page 27 Refrigerant pipe diameter from branch to branch (B,C,D) Downward Indoor Unit total capacity Liquid pipe Gas pipe [mm(inch)] [mm(inch)] [kW(Btu/h)] <22.4(76,400) Ø9.52(3/8) Ø19.05(3/4) < 33(112,600) Ø9.52(3/8) Ø22.2(7/8) < 47(160,400) Ø12.7(1/2) Ø28.58(1-1/8) < 71(242,300) Ø15.88(5/8) Ø28.58(1-1/8) < 104(354,900) Ø19.05(3/4) Ø34.9(1-3/8) 104(354,900) Ø19.05(3/4) Ø41.3(1-5/8) Total pipe length = A+B+C+D+a+b+c+d+e 1,000m(3,281 ft)
  • Page 28 Refrigerant piping installation Header Method 1 Outdoor Unit Example : 6 Indoor Units connected : Outdoor Unit : 1st branch : Indoor Units : Sealed piping L 150m(492ft) 40m(131ft) 15m(49ft) 2 Outdoor Units Slave Example : 6 Indoor Units connected Master : Outdoor Unit : Header branch...
  • Page 29 Refrigerant piping installation 3 Outdoor Units Slave2 Slave1 Example : 6 Indoor Units connected Master : Outdoor Unit : Header branch (32.8ft) : Indoor Units or less : Sealing : Connection branch pipe L 150m(492ft) between Outdoor units: 40m(131ft) ARCNN30 : Connection branch pipe between Outdoor units: ARCNN20...
  • Page 30 Refrigerant piping installation 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(492ft) 40m(131ft) Branch pipe can not be used after header Example : 5 Indoor Units connected Slave : Outdoor Unit...
  • Page 31 Refrigerant piping installation Refrigerant pipe diameter from branch to branch (B,C) Liquid pipe Gas pipe Downward Indoor Unit total capacity [mm(inch)] [mm(inch)] [kW(Btu/h)] <22.4(76,400) Ø9.52(3/8) Ø19.05(3/4) < 33(112,600) Ø9.52(3/8) Ø22.2(7/8) < 47(160,400) Ø12.7(1/2) Ø28.58(1-1/8) < 71(242,300) Ø15.88(5/8) Ø28.58(1-1/8 ) < 104(354,900) Ø19.05(3/4) Ø34.9(1-3/8) 104(354,900)
  • Page 32 Refrigerant piping installation Outdoor unit Connection Refrigerant pipe diameter before 1st branch (A,E,F) Liquid pipe Gas pipe Upward Outdoor Unit total capacity [mm(inch)] [mm(inch)] [HP] Ø9.52(3/8) Ø19.05(3/4) Ø9.52(3/8) Ø22.2(7/8) 12~16 Ø12.7(1/2) Ø28.58(1-1/8) 18~22 Ø15.88(5/8) Ø28.58(1-1/8) Ø15.88(5/8) Ø34.9(1-3/8 26~34 Ø19.05(3/4) Ø34.9(1-3/8) 36~48 Ø19.05(3/4) Ø34.9(1-5/8)
  • Page 33 Refrigerant piping installation WARNING When the equivalent length between the outdoor unit and a indoor unit is 90 m(295 ft) or more, the size of main pipes (Liquid pipe and Gas pipe) must be increased one grade. Gas pipe Liquid pipe 8HP ......Ø19.05(3/4 inch) Ø22.2(7/8 inch) 8, 10HP .......Ø9.52(3/8 inch)
  • Page 34 Refrigerant piping installation Connection between outdoor and outdoor unit Example of Pipe Connection between Outdoor 1. Pipe Connection between Outdoors Differnce in height between outdoor units Less than 5m(16ft)( h1 5m(16ft)). Longest Pipe Length between Outdoors Less than 10m(32.8ft), after 1st branch. Less than 10m(32.8ft) CAUTION Apply oil trap between outdoor unit installed Higher level and outdoor unit installed lower level.
  • Page 35 Refrigerant piping installation 3. In case pipe length between outdoors is 2m or more. When the piping length between Branch of Outdoor units or between Branch and outdoor units. Is 2 m(6.6ft) or more, prepare a oil trap 200 mm(0.7ft) or more as shown below) on the gas pipe line location. Less than 2 m(6.6ft) from branch.
  • Page 36 The amount of Refrigerant The calculation of the additional charge should take into account the length of pipe. Product Charge(kg(lb)) Additional charge (kg(lb)) 10HP a : ø6.35(1/4), 10m(32.8ft) Outdoor Unit Total liquid pipe (m(ft.)): Ø22.2mm(7/8inch) x 0.354(kg/m) 0.237 lb/ft b : ø6.35(1/4), 10m(32.8ft) Indoor Unit c : ø6.35(1/4), 10m(32.8ft) A : ø9.52(3/8), 40m(131ft)
  • Page 37 Refrigerant piping installation • 460V Product Charge kg(lbs) (17.6) (17.6) (17.6) (17.6) (17.6) (17.6+17.6) (17.6+17.6) (17.6+17.6) (17.6+17.6) (17.6+17.6) (17.6+17.6) kg(lbs) -1(-2.2) 0(0) 1(2.2) 2(4.4) 3(6.6) -1(-2.2) 0(0) 1(2.2) 2(4.4) 3(6.6) 4(8.8) 8+8+8 8+8+8 8+8+8 8+8+8 8+8+8 8+8+8 8+8+8 8+8+8 Product Charge kg(lbs) (17.6+17.6) (17.6+17.6) (17.6+17.6+17.6)
  • Page 38 Refrigerant piping installation Distribution Method 1. Line Distribution Slave Master Slave 3rd main pipe distribution Master Slave Master Main pipe Distribution Main pipe Distribution 2. Vertical Distribution Ensure that the branch pipes are attached vertically. Slave Master Slave Master 3. The others Slave Slave Master...
  • Page 39 Refrigerant piping installation 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 40 Refrigerant piping installation • 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 •...
  • Page 41: Branch Pipe

    Refrigerant piping installation Y branch pipe [Unit:mm(inch)] Models Gas pipe Liquid pipe I.D12.7(1/2) I.D6.35(1/4) I.D12.7(1/2) I.D15.88(5/8) I.D9.52(3/8) I.D9.52(3/8) ARBLN01621 I.D6.35(1/4) I.D15.88(5/8) I.D12.7(1/2) I.D6.35(1/4) I.D15.88(5/8) I.D9.52(3/8) I.D12.7(1/2) O.D9.52(3/8) I.D19.05(3/4) O.D15.88(5/8) I.D19.05(3/4) I.D19.05(3/4) I.D22.2(7/8) I.D15.88(5/8) I.D9.52(3/8) I.D6.35(1/4) I.D9.52(3/8) I.D12.7(1/2) I.D25.4(1) ARBLN03321 I.D12.7(1/2) I.D28.58(1-1/8) I.D12.7(1/2) I.D12.7(1/2)
  • Page 42 Refrigerant piping installation Header [Unit:mm(inch)] Models Gas pipe Liquid pipe I.D Ø12.7(1/2) I.D Ø12.7(1/2) I.D Ø6.35(1/4) I.D Ø6.35(1/4) I.D Ø15.88(5/8) I.D Ø15.88(5/8) I.D Ø9.52(3/8) I.D Ø9.52(3/8) 4 branch I.D Ø12.7(1/2) I.D Ø19.05(3/4) ARBL054 I.D Ø12.7(1/2) O.D Ø19.05(3/4) O.D Ø12.7(1/2) I.D Ø9.52(3/8) I.D Ø15.88(5/8) I.D Ø9.52(3/8) I.D Ø12.7(1/2)
  • Page 43 Refrigerant piping installation Leak Test and Vacuum drying (1) Leak test Leak test should be made by pressurizing nitrogen gas to 551.1 psi. 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 44 Refrigerant piping installation (2) Vacuum Vacuum drying should be made from the service port provided on the outdoor unit’s service valve to the vac- uum pump commonly used for liquid pipe, gas pipe and high/low pressure common pipe. (Make Vacuum from liquid pipe, gas pipe and high/low pressure common pipe with the service valve closed.) * Never perform air purging using refrigerant.
  • Page 45 Refrigerant piping installation Vacuum Mode This function is used for creating vacuum in the system after compressor replacement, ODU parts replace- ment or IDU addition/replacement. Vacuum mode setting method Vacuum mode cancellation method Main PCB ODU power reset Master main PCB DIP switch OFF( No.11,14) SW01S Main PCB Power reset...
  • Page 46 Refrigerant piping installation 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 47: Electrical Wiring

    Electrical Wiring Electrical Wiring 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 48 Electrical Wiring Outdoor Unit Outdoor Unit Indoor Indoor Indoor Indoor Unit Unit Unit Unit Remote Remote Remote Remote controller controller controller controller Outdoor Unit Outdoor Unit Indoor Indoor Indoor Indoor Unit Unit Unit Unit Remote Remote Remote Remote controller controller controller controller 2-Core Shield Cable...
  • Page 49: Electrical Wiring

    Electrical Wiring Control box and connecting position of wiring - Remove all of the screws at front panel and remove the panel by pulling it forward. - Connect communication line between master and slave outdoor unit through the terminal block. - Connect communication lines between outdoor unit and indoor units through the terminal block.
  • Page 50 Electrical Wiring Communication and Power Lines 1) Communication cable • Types : shielding wire •Use wires of size : over 1.25mm • Maximum allowable temperature: 60°C • Maximum allowable line length: under 1,000m(3,281ft) 2) Remote control cable • Types : 3-core cable 3) Simple central control cable •...
  • Page 51: Wiring Of Main Power Supply And Equipment Capacity

    Electrical Wiring Wiring of Main Power Supply and Equipment Capacity 1. Use a separate power supply for the Outdoor Unit and Indoor Unit. 2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceed- ing with the wiring and connections. 3.
  • Page 52 Electrical Wiring 5.1 60Hz Example Connection of Communication Cable 1 Outdoor Unit - 3Ø, 460V 3 Phase 3 Wires Power line(R, S, T) Communication line (3 line): Wired remote control Single Phase of power supply line(L(1),L(2)) Power supply switch Communication line (2 shield line): (Switch fuse : ELCB) 3 Phase 3 Wires Between Indoor Unit and Outdoor Unit...
  • Page 53 Electrical Wiring 2 Outdoor Units - 3Ø, 460V 3 Phase 3 Wires Power line(R, S, T) Master When the power source is connected In series between the units. Communication line (3 line): Wired remote control Slave Single Phase of power supply line(L(1),L(2)) Communication line (2 shield line): Power supply switch Between Outdoor Unit and Outdoor Unit...
  • Page 54 Electrical Wiring 3 Outdoor Units - 3Ø, 460V When the power source is connected Master In series between the units. 3 Phase 3 Wires Power line(R, S, T) Slave1 Communication line (3 line): Wired remote control Slave2 Single Phase of power supply line(L(1),L(2)) Communication line (2 shield line): Power supply switch Between Outdoor Unit and Outdoor Unit...
  • Page 55 Electrical Wiring 1 Outdoor Unit - 3Ø, 208/230V 3 Phase 3 Wires Power line(R, S, T) Communication line (3 line): Wired remote control Single Phase of power supply line(L(1),L(2)) Power supply switch (Switch fuse : ELCB) Communication line (2 shield line): 3 Phase 3 Wires Between Indoor Unit and Outdoor Unit Power supply...
  • Page 56 Electrical Wiring 2 Outdoor Units - 3Ø, 208/230V 3 Phase 3 Wires Power line(R, S, T) Master When the power source is connected Communication line (3 line): Wired remote control In series between the units. Slave Single Phase of power supply line(L(1),L(2)) Communication line (2 shield line): Power supply switch Between Outdoor Unit and Outdoor Unit...
  • Page 57 Electrical Wiring 3 Outdoor Units - 3Ø, 208/230V When the power source is connected Master In series between the units. 3 Phase 3 Wires Power line(R, S, T) Slave1 Communication line (3 line): Wired remote control Slave2 Single Phase of power supply line(L(1),L(2)) Communication line (2 shield line): Power supply switch Between Outdoor Unit and Outdoor Unit...
  • Page 58 Electrical Wiring Example Connection of Communication Cable [BUS type] [STAR type] • Connection of communication cable must be • Abnormal operation can be caused by communica- installed like below figure between indoor unit to out- tion defect, when connection of communication cable door unit.
  • Page 59 Electrical Wiring Connect the cable to the outdoor unit 1. Remove the control box cover from the unit. Connect the wires to the terminals on the control box as following. 2. Secure the cable onto the control box with the holder 3.
  • Page 60 1-1/4 1-1/4 1-1/4 Knockout Diameter (inch) 1-23/64 1-23/64 1-23/64 1-23/64 1-23/32 1-23/32 1-23/32 1-23/32 Model name ARUN076BT2 ARUN096BT2 ARUN115BT2 ARUN154BT2 ARUN173BT2 ARUN192BT2 ARUN211BT2 ARUN230BT2 Conduit (inch) 1-1/4 1-1/4 1-1/4 Knockout Diameter (inch) 1-23/64 1-23/64 1-23/64 1-23/32 1-23/32 1-23/32 Model name...
  • Page 61: Main Pcb

    Electrical Wiring Location of setting Switch Main PCB SW01B SW02B (DIP S/W) (DIP S/W) 7 - Segment SW02V Auto addressing Installation Manual 61...
  • Page 62 Electrical Wiring DIP switch setting Checking according to dip switch setting 1. You can check the setting values of the main outdoor unit from the 7 segment LED. The dip switch setting should be changed when the power is OFF. 2.
  • Page 63 Electrical Wiring Setting the DIP switch • 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 64 Electrical Wiring Function Function SW01B Setting SW01B Setting SW02B Setting SW02B Setting Remarks Remarks Dry Contact Dry Contact 9 10 11 12 13 14 9 10 11 12 13 14 Snow Snow 9 10 11 12 13 14 9 10 11 12 13 14 Forced Forced Defrosting...
  • Page 65 Electrical Wiring 2. Settings of slave outdoor unit Function Function SW01B Setting SW01B Setting SW02B Setting SW02B Setting Remarks Remarks Slave 1 Slave 1 9 10 11 12 13 14 9 10 11 12 13 14 Slave 2 Slave 2 9 10 11 12 13 14 9 10 11 12 13 14 Slave 3...
  • Page 66 Electrical Wiring Automatic Addressing • The address of indoor units would be set by auto SW01B SW02B addressing (DIP S/W) (DIP S/W) 1) Wait for 3 minutes after applying power supply (main and sub outdoor unit, indoor unit). 7 - Segment 2) Press the switch of the outdoor unit (SW02V) for 5 SW02V Auto addressing...
  • Page 67 Electrical Wiring Group Number setting Group Number setting for Indoor Units Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off. The communication lines connected to INTERNET terminal should be connected to central control of Outdoor unti with care for their polarity( A A, B Turn the whole system on.
  • Page 68 Electrical Wiring Outdoor unit Dry Contact installation and connection • Connect wires as below figure at the hole of backside of Outdoor Unit Dry Contact. • Insert the wire in the connection hole pushing the "Push" button. Mode Change Air circulation Outdoor Unit Heating Cooling...
  • Page 69: Test Run

    Test Run Test Run Checks Before Test Run Check to see whether there is any refrigerant leakage, and slack of power or communication cable. Confirm that 500 V megger shows 2.0 M or more between power supply terminal block and ground. Do not operate in the case of 2.0 M or less.
  • Page 70 Test Run How to Cope with Test Run Abnormality The phenomena from main 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 71: Test Run

    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. -3 indoor temperature sensors, 9 outdoor temperature sensors, 2 outdoor pressure sensors. It is used for judging sensor abnormality. Note 2) Note 1.
  • Page 72 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 master outdoor unit. Indoor sensor error : Outdoor sensor error : * 5 number of errors is displayed Displaying error content...
  • Page 73 Test Run Refrigerant Auto Charging Function This function charges appropriate amount of refrigerant automatically through cycle operation. It can be used when refrigerant amount Isn't certain because of SVC and leakage. Note Start 1. After installing the refrigerant charging device as shown below in figure, Main PCB Wait for 3 min.
  • Page 74 Test Run manifold Gas Pipe Liquid Pipe Capillary Assembly Procedure 1. Arrange manifold,capillary assembly, refrigerant vessel and scale 2. Connect manifold to the gas pipe service valve of ODU as shown in the figure. 3. Connect manifold and Capillary tube. Use designated capillary assembly only.
  • Page 75 Test Run Refrigerant Checking Function 1. This function charges appropriate amount of refrigerant automatically through cycle operation. 2. This function judges refrigerant leakage and overcharging. 3. It can be used with refrigerant auto charging function. Start Note 1. In case air temperature is out of guaranteed Main temperature, refrigerant checking function may end Wait for 3 min.
  • Page 76 Test Run CAUTION 1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range) IDU : 20(68˚F)~32°C(90˚F) ODU : 10(50˚F)~38°C(100˚F) 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 77 Test Run Night Low Noise Function 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 Master ODU Dip S/W No.12+14 ON SW01B Master ODU Main PCB Power Reset...
  • Page 78 Test Run Vacuum Mode This function is used for creating vacuum in the system after compressor replacement, ODU parts replace- ment or IDU addition/replacement. Vacuum mode setting method Vacuum mode cancellation method Main PCB ODU power reset Master main PCB DIP switch OFF( No.11,14) SW01S Main PCB Power reset...
  • Page 79 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 80 Test Run Display Title Cause of Error Master Outdoor Unit Inverter DC charging is not performed at Master Outdoor Unit after starting relay turn on. Compressor DC link Low Voltage Slave1 Outdoor Unit Inverter DC charging is not performed at Slave1 Outdoor Unit Compressor DC link Low Voltage after starting relay turn on.
  • Page 81 Test Run Display Title Cause of Error Master Outdoor Unit Constant System is turned off by Master Outdoor Uunit Constant Speed Compressor High Speed High Discharge Temperature Discharge Temperature Slave1 Outdoor Unit Constant System is turned off by Slave1 Outdoor Unit Constant Speed Compressor High Speed High Discharge Temperature Discharge Temperature...
  • Page 82 Test Run Display Title Cause of Error Master Outdoor Unit Air Master Outdoor Unit Air Temperature Sensor open or Temperature Sensor Fault short Slave1 Outdoor Unit Air Slave1 Outdoor Unit Air Temperature Sensor open or Temperature Sensor Fault short Slave2 Outdoor Unit Air Slave2 Outdoor Unit Air Temperature Sensor open or Temperature Sensor Fault short...
  • Page 83 Test Run Display Title Cause of Error Communication error : inverter Failing to receive inverter signal at main PCB of Main PCB Master Outdoor Unit Communication error : inverter Failing to receive inverter signal at main PCB of Main PCB Slave1 Outdoor Unit Communication error : inverter Failing to receive inverter signal at main PCB of...
  • Page 84 Test Run Display Title Cause of Error Master Outdoor Unit Fan CT Master Outdoor Unit Fan CT Sensor open or short Sensor Error Slave1 Outdoor Unit Fan CT Slave1 Outdoor Unit Fan CT Sensor open or short Sensor Error Slave2 Outdoor Unit Fan CT Slave2 Outdoor Unit Fan CT Sensor open or short Sensor Error Master Outdoor Unit Fan DC Link...
  • Page 85 Test Run Display Title Cause of Error Communication Error Between Failing to receive Slave Unit signal at main PCB of Master Outdoor Unit and Other Master Outdoor Unit Outdoor Unit Communication Error Between Failing to receive master and other Slave Unit signal at Slave1 Outdoor Unit and Other main PCB of Slave1 Outdoor Unit 1 0 4 2...
  • Page 86 Test Run Display Title Cause of Error Master Outdoor Unit Constant Comp locking, Check Valve leakage, comp dielectric Speed Compressor Fault break down at Master Outdoor Unit Slave1 Outdoor Unit Constant Comp locking, Check Valve leakage, comp dielectric at 1 7 3 2 Speed Compressor Fault Slave1 Outdoor Unit Slave2 Outdoor Unit Constant...
  • Page 87: 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 to such an extent that the refrigerant gas will not exceed the limiting concentration even if the refrigerant gas leaks in the room.
  • Page 88 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 Calculate refrigerant concentration Total amount of replenished In case the result of calculation exceeds refrigerant in refrigerant facility (lb) Refrigerant concentration the limiting concentration, perform the Capacity of smallest room where...
  • Page 89: 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 90 Outdoor Unit...
  • Page 91 P/No.: MFL46912303 Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.