Table of Contents
Outdoor Unit
Installation MANUAL
MODELS: ARUV Series
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
Table of Contents
Related Manuals for LG Multi V Plus II System
Summary of Contents for LG Multi V Plus II System
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Page 1: Outdoor Unit
website http://www.lgservice.com System Outdoor Unit R410A INSTALLATION MANUAL MODELS: ARUV Series 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: Table Of Contents
ARUV(N) Series Outdoor unit Installation Manual TABLE OF CONTENTS Safety Precautions ....................3 Installation Process....................7 Outdoor units Information ..................8 Environment-friendly Alternative Refrigerant R410A ........13 Select the Best Location..................13 Installation Space....................14 Lifting method ......................18 Installation ......................19 Refrigerant piping installation ................24 Electrical Wiring ....................52 Test Run ........................71 Caution For Refrigerant Leak................93 Installation guide at the seaside..................95... -
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 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 5 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 6 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.
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Page 7: 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 8: Outdoor Units Information
Outdoor units Information Outdoor units Information • Ratio of the running Indoor Units to the Outdoor: Within 10 ~ 100% • A combination operation over 100% cause to reduce each indoor unit capacity. I Combination Ration(50~200%) Outdoor Number Connection Capacity Single outdoor units 200% Double outdoor units... - Page 9 Outdoor Units Information Unit 2 Units System(HP) Model Combination unit ARUN200LT2 ARUN220LT2 ARUN240LT2 ARUN260LT2 ARUN140LT2 ARUN60LT2 ARUN160LT2 ARUN140LT2 Independent unit ARUN60LT2 ARUN160LT2 ARUN80LT2 ARUN120LT2 Product Charge 4.5+8 4.5+8 CF(Correction Factor) Max. Connectable No. of Indoor Units 32(40) 35(44) 39(48) 42(52) Net Weight 175+285 175+285...
- Page 10 Outdoor Units Information Unit 3 Units System(HP) Model Combination unit ARUN360LT2 ARUN380LT2 ARUN400LT2 ARUN420LT2 ARUN160LT2 ARUN160LT2 ARUN160LT2 ARUN140LT2 Independent unit ARUN140LT2 ARUN160LT2 ARUN160LT2 ARUN140LT2 ARUN60LT2 ARUN60LT2 ARUN80LT2 ARUN140LT2 Product Charge 4.5+8x2 4.5+8x2 CF(Correction Factor) Max. Connectable No. of Indoor Units 58(64) 61(64) 64(64)
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Page 11: Cooling Only
Outdoor Units Information I Cooling Only Unit 1 Outdoor Unit System(HP) Model Combination unit ARUV50LT2 ARUV60LT2 ARUV80LT2 ARUV100LT2 Independent unit ARUV50LT2 ARUV60LT2 ARUV80LT2 ARUV100LT2 Product Charge CF(Correction Factor) Max. Connectable No. of Indoor Units 8(12) 10(12) 13(20) 16(25) Net Weight Dimensions 806x1607x730 806x1607x730... - Page 12 Outdoor Units Information Unit 2 Units 3 Units System(HP) Model Combination unit ARUV280LT2 ARUV300LT2 ARUV320LT2 ARUV340LT2 ARUV140LT2 ARUV160LT2 ARUV160LT2 ARUV140LT2 Independent unit ARUV140LT2 ARUV140LT2 ARUV160LT2 ARUV140LT2 ARUV60LT2 Product Charge 4.5+8x2 CF(Correction Factor) Max. Connectable No. of Indoor Units 45(56) 49(60) 52(64) 55(64) Net Weight...
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Page 13: 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 14: Installation Space
Installation Space Installation Space Individual Installation I Basic space required A space of at least 250 mm is necessary at the back for inlet air. Taking servicing, etc. from the rear into account, a space of about 700 mm should be provided, the same as at the front. 700 mm or more (Control box is open/close type) Rear Side Rear Side... - Page 15 Installation Space I When unit is surrounded by walls 700 mm or more (Control box is of a open/close type) 250 mm or more Rear Side Rear Side Rear Side Rear Side Front Side Front Side Front Side Front Side Rear Side Rear Side Front Side...
- Page 16 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) 900mm or more (control box is of a open/close type) 250 mm or more 150 mm or more Rear Side...
- Page 17 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. •...
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Page 18: 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 19: Installation
Installation Installation Location of anchor bolt(To be applied to 1, 2 Units installation) I Individual installation 500±2 900±2 900±2 900±2 900±2 900±2 I Collective installation 500±2 900±2 900±2 500±2 900±2 900±2 900±2 900±2 900±2 900±2 900±2 900±2 I Installation foot(Location of anchor bolt) (UY2) (UW1) Installation Manual 19... - Page 20 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.
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Page 21: 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 22: 22 Outdoor Unit
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 23 Installation HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Fastening band (accessory) 2. Precautions in high humidity circumstance: This air conditioner has been tested according to the "ISO Conditions with Mist" and confirmed that there is not any default.
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Page 24: 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 25: Outdoor Units
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) Outdoor Unit to the pipe (field supply) by using elbows (field supply) 2. - Page 26 Refrigerant piping installation Connection of Outdoor units 2 outdoor units Model Connection of gas pipe Connection of liquid pipe Blow nitrogen Main outdoor while brazing Don't cut the pipe less liquid pipe Ø 34.9 Main outdoor than 70mm Ø 12.7 Ø...
- Page 27 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 28 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.
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Page 29: Refrigerant Piping System
Refrigerant piping installation Refrigerant piping system N Y branch method 1 Outdoor Units Example : 5 Indoor Units connected : Outdoor Unit : 1st branch (Y branch) : Indoor Units L150m (200 m : Conditional application) l 40m (90 m : Conditional application) 2 Outdoor Units Slave Slave... - Page 30 Refrigerant piping installation 3 Outdoor Units Slave2 Example : 5 Indoor Units Slave1 Master connected 10m or : Outdoor Unit less : 1st branch (Y branch) : Indoor Units : Downward Indoor Unit : Connection branch pipe L150m (200 m : Conditional application) between Outdoor units: l 40m (90 m : Conditional application) ARCNN30...
- Page 31 Refrigerant piping installation ➲ 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)] ≤5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) <16(54,600) Ø9.52(3/8) Ø15.88(5/8) <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 <...
- Page 32 Refrigerant piping installation Header Method 1 Outdoor Unit Example : 6 Indoor Units connected : Outdoor Unit : 1st branch : Indoor Units : Sealed piping L 150m 2 Outdoor Units Slave Slave Example : 6 Indoor Units connected Master Master : Outdoor Unit 10m or...
- Page 33 Refrigerant piping installation 3 Outdoor Units Slave2 Slave1 Example : 6 Indoor Units connected Master : Outdoor Unit : Header branch 10m or less : Indoor Units : Sealing L 150m : Connection branch pipe between Outdoor units: ARCNN30 : Connection branch pipe between Outdoor units: ARCNN20 Branch pipe can not be used after header...
- Page 34 Refrigerant piping installation N 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 Example : 5 Indoor Units connected Slave : Outdoor Unit...
- Page 35 Refrigerant piping installation 3 Outdoor Units Slave2 Slave1 Example : 5 Indoor Units connected Master : Outdoor Unit : 1st branch(Y branch) 10m or : Y branch less : Indoor Unit : Connection branch pipe between Outdoor units: ARCNN30 : Connection branch pipe L 150m between Outdoor units: ARCNN20...
- Page 36 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)] ≤5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) <16(54,600) Ø9.52(3/8) Ø15.88(5/8) <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 <...
- Page 37 Refrigerant piping installation N Outdoor unit Connection ➲ Refrigerant pipe diameter before 1st branch (A) Upward Outdoor Unit total capacity Liquid pipe Gas pipe [mm(inch)] [mm(inch)] [HP] Ø9.52(3/8) Ø15.88(5/8) 6, 8 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 18~22 Ø15.88(5/8) Ø28.58(1 Ø15.88(5/8) Ø34.9(1...
- Page 38 Refrigerant piping installation Connection between outdoor and outdoor unit I Example of Pipe Connection between Outdoor 1. Pipe Connection between Outdoors Differnce in height between outdoor units Less than 5m( h1 5m). Longest Pipe Length between Outdoors Less than 10m, after 1st branch. Less than 10 m 2.
- Page 39 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 or more, prepare a oil trap (200 mm or more as shown below) on the gas pipe line location Less than 2 m from branch.
- Page 40 Refrigerant piping installation N The amount of Refrigerant The calculation of the additional charge should take into account the length of pipe. Product Charge(kg) 10HP Additional charge (kg) a : ø6.35, 10m Outdoor Unit Total liquid pipe (m): Ø22.2mm x 0.354(kg/m) b : ø6.35, 10m Indoor Unit c : ø6.35, 10m...
- Page 41 Refrigerant piping installation • Cooling Only Product Charge(kg) 12.5 12.5 12.5 CF(kg) Product Charge(kg) 20.5 20.5 20.5 CF(kg) • Heat Pump Product Charge(kg) 12.5 12.5 12.5 CF(kg) Product Charge(kg) 20.5 20.5 20.5 CF(kg) Note: Fill in the f-gas Label attached on outdoor about the quantity of the fluorinated greenhouse gases Manufacturing site (See Model Name label) Installation site (If possible being placed adjacent to the service points for the addition or removal of refrigerant)
- Page 42 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 43 Refrigerant piping installation Tubagem do refrigerante Isolante Tubo a soldar Válvula Nitrogénio Válvula de redução da pressão AVISO Ao instalar e mover o ar condicionado para outro local, certifique-se de que recarrega o refrigerante após a evacuação correcta. - Se for misturado um refrigerante ou ar diferente com o refrigerante original, o ciclo do refrigerante pode apresentar anomalias ou a unidade pode ficar danificada.
- Page 44 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 45 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 46 Refrigerant piping installation N Y branch pipe [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.D19.05 I.D22.2 I.D15.88 I.D9.52 I.D6.35 I.D9.52 I.D12.7 I.D25.4 ARBLN03321 I.D12.7 I.D12.7 I.D12.7...
- Page 47 Refrigerant piping installation N 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...
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Page 48: Leak Test And Vacuum Drying
Refrigerant piping installation 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 49 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.
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Page 50: Vacuum Mode
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 51: Thermal Insulation Of Refrigerant Piping
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 52: 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 53 Electrical Wiring Outdoor Unit Outdoor Unit Master Slave1 Slave2 Master Slave1 Slave2 Indoor Indoor Indoor Indoor Unit Unit Unit Unit Remote Remote Remote Remote controller controller controller controller Outdoor Unit Outdoor Unit Master Slave1 Slave2 Master Slave1 Slave2 Indoor Indoor Indoor Indoor Unit...
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Page 54: Control Box And Connecting Position Of 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 main and sub outdoor unit through the terminal block. - Connect communication lines between outdoor unit and indoor units through the terminal block. - Page 55 Electrical Wiring Communication and Power Lines 1) Communication cable • Types : shielding wire • Cross section : over 1.25mm • Maximum allowable temperature: 60°C • Maximum allowable line length: under 300m 2) Remote control cable • Types : 3-core cable 3) Simple central control cable •...
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Page 56: Wiring Of Main Power Supply And Equipment Capacity
Electrical Wiring N 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 57 Electrical Wiring 50Hz N Example Connection of Communication Cable 1 Outdoor Unit(Half size) 3 Phase 4 Wires Power line(R, S, T, N) Communication line (3 line): Wired remote control Single Phase of power supply line(L, N) Power supply switch (Switch fuse : ELCB) Communication line (2 shield line): Between Indoor Unit and Outdoor Unit 3 Phase 4 Wires Power supply...
- Page 58 Electrical Wiring N Example Connection of Communication Cable 1 Outdoor Unit 3 Phase 4 Wires Power line(R, S, T, N) Communication line (3 line): Wired remote control Single Phase of power supply line(L, N) Power supply switch Communication line (2 shield line): Between Indoor Unit (Switch fuse : ELCB) and Outdoor Unit 3 Phase 4 Wires...
- Page 59 Electrical Wiring N Example Connection of Communication Cable 2 Outdoor Unit I When the power source is connected Master 3 Phase Power line(R, S, T, N) In series between the units. Slave Communication line (3 line): Wired remote control Single Phase of power supply line (L, N) Communication line (2 shield line): Power supply switch Between Outdoor Unit and Outdoor Unit...
- Page 60 Electrical Wiring N Example Connection of Communication Cable 2 Outdoor Units Master I When the power source is connected 3 Phase 4 Wires Power line(R, S, T, N) In series between the units. Slave Communication line (3 line): Wired remote control Single Phase of power supply line(L, N) Power supply switch Communication line (2 shield line):...
- Page 61 Electrical Wiring N Example Connection of Communication Cable 3 Outdoor Units Master I When the power source is connected 3 Phase 4 Wires Power line (R, S, T, N) In series between the units. Slave1 Communication line (3 line): Wired remote control Slave2 Single Phase of power supply line (L, N) Communication line (2 shield line):...
- Page 62 Electrical Wiring N Example Connection of Communication Cable 3 Outdoor Units I When the power source is connected Master In series between the units. 3 Phase 4 Wires Power line(R, S, T, N) Slave1 Communication line (3 line): Wired remote control Slave2 Single Phase of power supply line(L,N) Communication line (2 shield line):...
- Page 63 Electrical Wiring N 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.
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Page 64: Main Pcb
Electrical Wiring Location of setting Switch Main PCB SW01B SW02B (DIP S/W) (DIP S/W) 7 - Segment SW02V Auto addressing SW01V Data confirm Outdoor Unit... -
Page 65: Dip Switch Setting
Electrical Wiring DIP switch setting I Checking according to dip switch setting 1. You can check the setting values of the Master outdoor unit from the 7 segment LED. The dip switch setting should be changed when the power is OFF. 2. - Page 66 Electrical Wiring I Setting the DIP switch • If you set the Dip switch when power is on, the changed setting will not be applied immediately. The changed setting will be enabled only when Power is reset or by pressing Reset button. 1.
- Page 67 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 9 10 11 12 13 14 Accelerates defrost Forced operation Defrosting...
- Page 68 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 69 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 (master and sub outdoor unit, indoor unit). 7 - Segment 2) Press the switch of the outdoor unit (SW02V) for 5 SW02V Auto addressing...
- Page 70 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 ¡...
- Page 71 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. • Setting Main PCB Dip SW of Master Outdoor Unit. Mode Change Outdoor Unit Heating...
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Page 72: 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 MΩ or more between power supply terminal block and ground. Do not operate in the case of 2 MΩ... -
Page 73: How To Cope With Test Run Abnormality
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 74: 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. -3 indoor temperature sensors, 9 outdoor temperature sensors, 2 outdoor pressure sensors. It is used for judging sensor abnormality. Note 2) Note 1. - Page 75 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 76 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 77 Test Run manifold Gas Pipe Liquid Pipe 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. If designated capillary assembly isn't used, the system may get damaged.
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Page 78: Refrigerant Checking Function
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 79 Test Run CAUTION 1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range) IDU : 20~32°C ODU : 10~38°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)
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Page 80: Night Low Noise Function
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 81 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 82 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 83 Test Run Display Title Cause of Error Master Outdoor Unit Inverter DC charging is not performed at Master Outdoor Unit Compressor DC link Low Voltage after starting relay turn on. DC charging is not performed at Slave1 Outdoor Unit Slave1 Outdoor Unit Inverter after starting relay turn on.
- Page 84 Test Run Display Title Cause of Error Master Outdoor Unit Inverter System is turned off by Master Outdoor Unit Inverter Compressor High Discharge Compressor High Discharge Temperature Temperature Slave1 Outdoor Unit Inverter System is turned off by Slave1 Outdoor Unit Inverter Compressor High Discharge Compressor High Discharge Temperature Temperature...
- Page 85 Test Run Display Title Cause of Error Master Outdoor Unit Inverter Master Outdoor Unit Inverter Compressor CT Sensor Compressor CT Sensor Fault open or short Slave1 Outdoor Unit Inverter Slave1 Outdoor Unit Inverter Compressor CT Sensor Compressor CT Sensor Fault open or short Slave2 Outdoor Unit Inverter Slave2 Outdoor Unit Inverter Compressor CT Sensor...
- Page 86 Test Run Display Title Cause of Error Master Outdoor Unit Heat Exchanger Temperature Master Outdoor Unit Heat Exchanger Temperature Sensor Sensor(Front side) open or short (Front side) Fault Slave1 Outdoor Unit Heat Exchanger Temperature Slave1 Outdoor Unit Heat Exchanger Temperature Sensor Sensor (Front side) open or short (Front side) Fault Slave2 Outdoor Unit Heat...
- Page 87 Test Run Display Title Cause of Error Omitting connection of R, S, T Omitting connection of Master outdoor unit power of Master Outdoor Unit Omitting connection of Slave1 Outdoor Unit Omitting connection of R, S, T power of Slave1 Outdoor Unit Omitting connection of R, S, T Omitting connection of Slave2 Outdoor Unit power of Slave2 Outdoor Unit...
- Page 88 Test Run Display Title Cause of Error Constant CT Sensor Error of Constant CT Sensor open or short of Master Outdoor Master Outdoor Unit Unit Constant CT Sensor open or short of Slave1 Outdoor Constant CT Sensor Error of Slave1 Outdoor Unit Unit Constant CT Sensor open or short of Slave2 Outdoor Constant CT Sensor Error of...
- Page 89 Test Run Display Title Cause of Error Master Outdoor Unit Fan Current is over 5A Master Outdoor Unit Fan Over Current Error Slave1 Outdoor Unit Fan Over Slave1 Outdoor Unit Fan is over 5A Current Error Slave2 Outdoor Unit Fan is over 5A Slave2 Outdoor Unit Fan Over Current Error Slave3 Outdoor Unit Fan Over...
- Page 90 Test Run Display Title Cause of Error Failing to receive Slave Unit signal at main PCB of Communication Error Between Master Outdoor Unit Master Outdoor Unit and Other Outdoor Unit Failing to receive master and other Slave Unit signal at Communication Error Between Slave1 Outdoor Unit and Other main PCB of Slave1 Outdoor Unit...
- Page 91 Test Run Display Title Cause of Error Master Outdoor Unit Subcooling Master Outdoor Unit Subcooling Inlet Temperature Inlet Temperature Sensor Error Sensor open or short Slave1 Outdoor Unit Subcooling Slave1 Outdoor Unit Subcooling Inlet Temperature Inlet Temperature Sensor Error Sensor open or short 1 1 4 Slave2 Outdoor Unit Subcooling Slave2 Outdoor Unit Subcooling Inlet Temperature...
- Page 92 Test Run Display Title Cause of Error Master Outdoor Unit Fan PCB Master Outdoor Unit Fan PCB Heat Sink Temperature Heat Sink Temperature Sensor Sensor open or short Error Slave1 Outdoor Unit Fan PCB Slave1 Outdoor Unit Fan PCB Heat Sink Temperature Heat Sink Temperature Sensor Sensor open or short Error...
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Page 93: 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 94 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) Refrigerant concentration the limiting concentration, perform the...
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Page 95: 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 96 P/No.: MFL46912301 Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.