LG ARUB80LT3 Installation Manual
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LG ARUB80LT3 Installation Manual

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INSTALLATION MANUAL
AIR CONDITIONER
• 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.your set and retain it for future reference.
MODELS
ARUB Series(Heat recovery)
P/NO : MFL46912317
www.lg.com

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Summary of Contents for LG ARUB80LT3

  • Page 1 • 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 ARUB Series(Heat recovery) www.lg.com P/NO : MFL46912317...

  • Page 2: Table Of Contents

    ARUB Series Outdoor unit Installation Manual TABLE OF CONTENTS Safety Precautions ........................3 Installation Process ......................7 Outdoor units Information ....................8 Environment-friendly Alternative Refrigerant R410A ............11 Select the Best Location .....................11 Installation Space ........................13 Lifting method ........................15 Installation ...........................16 Refrigerant piping installation ...................21 Pipe connections between indoor and outdoor unit ............29 Electrical Wiring ........................52 HR Unit PCB.........................77...

  • 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. n 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 to Do not reconstruct to change the settings of another site, do not charge it with a different refrig- the protection devices. erant 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. • If the gas leaks and accumulates around the • To avoid vibration or water leakage. 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.

  • Page 7: Installation Process

    Installation Process Installation Process Indicate clearly who will be responsible for switch setting. Determination of division work Preparation of contract drawings Make connection clearly between outdoor, indoor, remote controller and option. Take account of gradient The foundation must be level even Sleeve and insert work Outdoor unit foundation work of drain piping...

  • Page 8: Outdoor Units Information

    Power Supply: Outdoor Unit (3Ø, 380 - 415V, 50Hz/3Ø, 380V, 60Hz) n Heat Recovery Unit 1 Outdoor unit System(HP) Model ARUB80LT3 ARUB100LT3 ARUB120LT3 ARUB80LT3 ARUB100LT3 ARUB120LT3 Product Charge Max. Connectable No. of Indoor Units...
  • Page 9 Outdoor units Information Unit 2 Outdoor Unit System(HP) Model ARUB220LT3 ARUB240LT3 ARUB260LT3 ARUB280LT3 ARUB120LT3 ARUB120LT3 ARUB140LT3 ARUB160LT3 ARUB100LT3 ARUB120LT3 ARUB120LT3 ARUB120LT3 Product Charge 12.8 12.8 13.4 13.4 Max. Connectable No. of Indoor Units 35(44) 39(48) 42(52) 45(56) Net Weight 240 × 2 240 ×...
  • Page 10 Outdoor units Information Unit 3 Outdoor Unit System(HP) Model ARUB540LT3 ARUB560LT3 ARUB580LT3 ARUB600LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB200LT3 ARUB140LT3 ARUB160LT3 ARUB180LT3 ARUB200LT3 Product Charge 25.0 25.0 25.5 27.0 Max. Connectable No. of Indoor Units Net Weight 270 × 1 + 330 × 2 270 ×...

  • Page 11: 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 12 Select the Best Location n Select installation location of the HR unit suitable for following conditions • Avoid a place where rain may enter since the HR unit is for indoor. • Sufficient service space must be obtained. • Refrigerant pipe must not exceed limited length. •...

  • Page 13: Installation Space

    Installation Space Installation Space Individual Installation n During the installation of the unit, consider service, inlet, and outlet and acquire the minimum space as shown in the figures below. Case 1 Case 2 Category Installation Space (10mm≤Si d e Space≤49mm) (Si d e Space≥49mm) A≥10 A≥50...
  • Page 14 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 15: 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 16: Installation

    Installation Installation • Install at places where it can endure the weight and vibration/noise of the outdoor unit. • The outdoor unit supports at the bottom should have width of at least 100mm under the unitʼs legs before being fixed. •...
  • Page 17 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 18 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. n Use the accessory piping kit or the pipes purchased Copper Slanted Uneven Rough locally.
  • Page 19 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 20 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.

  • Page 21: Refrigerant Piping Installation

    Refrigerant piping installation Refrigerant piping installation Precautions on Pipe connection / Valve operation Pipe connection is done by connecting from the end of the pipe to the branching pipes, and the refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor unit. Flare connec- Low Pressure Gas pipe tion for the indoor unit, and welding connection for the outdoor pipe...
  • Page 22 Refrigerant piping installation Connection of Outdoor units 2, 3, 4 Outdoor Units [Unit : mm] Outdoor units Model Low Pressure Gas Pipe Liquid Pipe High Pressure Gas Pipe I.D.28.58 I.D.28.58 I.D.15.88 I.D.15.88 ARCNB21 2 Unit I.D.12.7 I.D.9.52 I.D.19.05 I.D.22.2 I.D.19.05 I.D.31.8 I.D.34.9 I.D.22.2...

  • Page 23: Refrigerant Piping Installation

    Refrigerant piping installation Installation procedure for HR unit 1. Using an insert-hole-in- anchor, hang the hanging bolt. 2. Install a hexagon nut and a flat washer (locally-procured)to the hanging bolt as shown in the figure in the bottom, and fit the main unit to hang on the hanger metal. Six-sided Nut (M10 or M8) 3.
  • Page 24 Refrigerant piping installation Type of HR Unit Select an HR unit according to the number of the indoor units to be installed. HR units are classified into 3 types by the number of connectable indoor units. Ex) Installation of 6 indoor units Consists of HR unit for 4 branches and HR unit for 2 branches.
  • Page 25 Refrigerant piping installation Installation of Zoning Control Some indoor unit can be connected to one port of HR unit. HR unit HR unit sealing Zoning control group 1 Zoning control group 2 (MAX 8 Indoor Units) (MAX 8 Indoor Units) Changeover under control Auto changeover Changeover under control...
  • Page 26 Refrigerant piping installation [ Reducers for indoor unit and HR unit ] (Unit: mm) Gas pipe Models Liquid pipe High pressure Low pressure Indoor unit reducer OD9.52 Ø6.35 OD15.88 Ø12.7 OD19.05 Ø15.88 Ø12.7 OD22.2 Ø19.05 Ø15.88 PRHR021 OD9.52 Ø6.35 OD12.7 Ø9.52 OD15.88 Ø12.7...
  • 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.

  • Page 29: Pipe Connections Between Indoor And Outdoor Unit

    Refrigerant piping installation Pipe connections between indoor and outdoor unit • Pipe connections can be done on the front side or on the side according to the installation environments. • Be sure to let 0.2kgf/cm Nitrogen flow in the pipe when welding. •...
  • Page 30 Pipe connections between indoor and outdoor unit n Remove leakage prevention cap Service Port • Remove the leakage prevention cap attached to the out- door unit service valve before pipe work. • Proceed the leakage prevention cap removal as follows: 1.
  • Page 31 Pipe connections between indoor and outdoor unit n Method of drawing out pipes on the bottom side ① Drawing out common pipe through side panel High Pressure Gas pipe Liquid pipe Low Pressure Gas pipes Remove only liquid/gas pipe Knock Out •...
  • Page 32 Pipe connections between indoor and outdoor unit Refrigerant piping system 3 Outdoor Units Example : 12 Indoor Units connected Ⓐ : Outdoor Unit Ⓑ : Y branch Ⓓ : Indoor Unit Ⓔ : Connection branch pipe between Outdoor units : ARCNB31 Ⓕ...
  • Page 33 Pipe connections between indoor and outdoor unit Ú Refrigerant pipe diameter from branch to branch (B,C,D) WARNING * : Serial connection of HR units : Capacity sum of indoor units ≤ 192.4 kBtu/hr • Refer to the HR unit PCB part for the valve group control setting. •...
  • Page 34 Pipe connections between indoor and outdoor unit WARNING When the equivalent length between a outdoor and the farthest indoor unit is 90m or more, main pipe(A) must be increased one grade. Ú Refrigerant pipe diameter from outdoor unit to first branch. (A) Upward outdoor Pipe diameter Pipe diameter when pipe length is 90m over to 1st branch...
  • Page 35 Pipe connections between indoor and outdoor unit Ú Y branch, Header and HR unit connection pattern Pattern 1 Pattern 2 • Impossible installation : HR unit Head branch • Impossible installation : Head branch pipe HR unit pipe Y and Head branch pipe. Pattern 3 Pattern 4 •...
  • Page 36 Pipe connections between indoor and outdoor unit Pattern 7 • * : Serial connection of HR units : Capacity sum of indoor units ≤ 192 kBtu/h Pattern 8 • * : Maximum indoor units per a branch are 8 indoor units Indoor Unit Y Branch pipe Head Branch pipe...
  • Page 37 Pipe connections between indoor and outdoor unit 1) Keep the 40m distance from the first branch to the farthest indoor. 1) under 40m 5m(16ft) 15m(49ft) Indoor Indoor Indoor Indoor Y branch Unit Unit Unit Unit Keep the sum of indoor capacity under 56.4kW(192 kBtu/h). 1) under 40m Indoor Indoor...
  • Page 38 Pipe connections between indoor and outdoor unit u Outdoor unit Connection WARNING • In case of pipe diameter B connected after first branch is bigger than the main pipe diameter A, B should be of the same size with A. Ex) In case indoor unit combination ratio 120% is connected to 70kW outdoor unit.
  • Page 39 Pipe connections between indoor and outdoor unit u Pipe Connection Method/Precautions for Series connections between Outdoor units - Separate Y branch joints are needed for series connections between outdoor units. - Please refer to the below connection examples to install pipe connections between outdoor units. n Pipe connection between outdoor units (General Case) The maximum pipe length...
  • Page 40 Pipe connections between indoor and outdoor unit • The pipes between the outdoor units must maintain horizontal levelness or give an inclination to prevent a back flow toward the slave outdoor unit. Otherwise, the unit may not operate properly. (Example 1) Toward indoor unit Toward indoor unit (Example 2)
  • Page 41 Pipe connections between indoor and outdoor unit • When connecting the pipes between the outdoor units, the accumulation of oil in the slave outdoor unit should be avoided. Otherwise, the unit may not operate properly. (Example 1) Toward indoor unit Toward indoor unit (Example 2) Toward indoor unit...
  • Page 42 Pipe connections between indoor and outdoor unit u 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. Ex) 16HP Additional Total liquid pipe charge(kg) :Ø25.4 mm Outdoor unit HR unit (1EA)
  • Page 43 Pipe connections between indoor and outdoor unit 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 p If the above equation can not be satisfied, then follow the following steps.
  • Page 44 Pipe connections between indoor and outdoor unit Branch pipe Fitting Y branch To Outdoor Unit To Branch Piping or Indoor Unit Horizontal Facing Facing plane downwards upwards Within +/- 10 Viewed from point A in direction of arrow Within 3 Within 3 •...
  • Page 45 Pipe connections between indoor and outdoor unit • 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: I.d.12.7 I.d

    Pipe connections between indoor and outdoor unit u Y branch pipe [unit:mm] Models Low Pressure Gas Pipe Liquid pipe High Pressure Gas Pipe I.D12.7 I.D12.7 I.D12.7 I.D6.35 I.D15.88 I.D15.88 I.D.6.35 I.D9.52 I.D 9.52 I.D12.7 I.D15.88 I.D 9.52 I.D9.52 I.D15.88 I.D12.7 I.D.6.35 I.D15.88 I.D12.7...
  • Page 47 Pipe connections between indoor and outdoor unit u Header branch pipe [unit:mm] Models Gas pipe Liquid pipe ID12.7 ID6.35 ID6.35 ID12.7 4 branch ID9.52 ID15.88 ID9.52 ARBL054 ID15.88 ID12.7 ID9.52 ID15.88 ID19.05 ID12.7 ID6.35 7 branch ID12.7 ID9.52 ID15.88 120 150 ID15.88 ARBL057 ID9.52...
  • Page 48 Pipe connections between indoor and outdoor unit 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 Pipe connections between indoor and outdoor unit (2) Vacuum Vacuum drying should be made from the service port provided on the outdoor unitʼs service valve to the vac- uum pump commonly used for Liquid pipe, Low Pressure Gas pipes, High Pressure Gas pipe. (Make Vacuum from Liquid pipe, Low Pressure Gas pipes, High Pressure Gas pipe with the service valve closed.) * Never perform air purging using refrigerant.
  • Page 50 Pipe connections between indoor and outdoor unit 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 ODU power reset Master unit PCB DIP switch off Switch off : 10, 12, 13 Master unit PCB DIP switch on...
  • Page 51 Pipe connections between indoor and outdoor unit 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...
  • Page 54 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 transmission line between master and slave outdoor unit through the terminal block. - Connect transmission lines between outdoor unit and indoor units through the terminal block.
  • Page 55 Electrical Wiring Transmission and Power Lines 1) Transmission cable • Types : shielding wire • Cross section : 1.0~1.5mm • Maximum allowable temperature: 60°C • Maximum allowable line length: under 1000m 2) Remote control cable • Types : 3-core cable 3) Central control cable Product type Wire type...
  • Page 56 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 57 Electrical Wiring Field Wiring 1. 50Hz u Example Connection of Communication Cable n 1 Outdoor Unit-3Ø, 380-415V Power supply 3 Phase 4 Wires 50Hz 380-415V [Outdoor Unit] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 50Hz 220-240V Power Line (4 Wires Cable)
  • Page 58 Electrical Wiring n 2 Outdoor Units-3Ø, 380-415V ■ When the power source is connected In series between the units. Power supply 3 Phase 4 Wires 50Hz 380-415V [Master] [Slave] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 50Hz 220-240V Power Line (4 Wires Cable)
  • Page 59 Electrical Wiring WARNING • Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply. •...
  • Page 60 Electrical Wiring n 3 Outdoor Units-3Ø, 380-415V ■ When the power source is connected In series between the units. Power supply 3 Phase 4 Wires 50Hz 380-415V [Master] [Slave1] [Slave2] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 50Hz 220-240V Power Line...
  • Page 61 Electrical Wiring WARNING • Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply. •...
  • Page 62 Electrical Wiring n 4 Outdoor Units - 3Ø, 380-415V n When the power source is connected In series between the units. Power supply 3 Phase 4 Wires 50Hz 380-415V [Master] [Slave1] [Slave2] [Slave3] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 50Hz...
  • Page 63 Electrical Wiring WARNING • Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply. •...
  • Page 64 Electrical Wiring 2. 60Hz u Example Connection of Communication Cable n 1 Outdoor Unit - 3Ø, 380V Power supply 3 Phase 4 Wires 60Hz 380V [Outdoor Unit] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 60Hz 220V Power Line (4 Wires Cable)
  • Page 65 Electrical Wiring n 2 Outdoor Units - 3Ø, 380V n When the power source is connected In series between the units. Power supply 3 Phase 4 Wires 60Hz 380V [Master] [Slave] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 60Hz 220V Power Line...
  • Page 66 Electrical Wiring WARNING • Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply. •...
  • Page 67 Electrical Wiring n 3 Outdoor Units - 3Ø, 380V n When the power source is connected In series between the units. Power supply 3 Phase 4 Wires 60Hz 380V [Master] [Slave1] [Slave2] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 60Hz 220V...
  • Page 68 Electrical Wiring WARNING • Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply. •...
  • Page 69 Electrical Wiring n 4 Outdoor Units - 3Ø, 380V n When the power source is connected In series between the units. Power supply 3 Phase 4 Wires 60Hz 380V [Master] [Slave1] [Slave2] [Slave3] (Main Switch) R S T N Switch Fuse Power supply 1 Phase 60Hz...
  • Page 70 Electrical Wiring WARNING • Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply. •...
  • Page 71 Electrical Wiring u Example Connection of Communication Cable [BUS type] • Connection of communication cable must be installed like below figure between indoor unit to outdoor unit. HR unit [STAR type] • Abnormal operation can be caused by communication defect, when connection of communication cable is installed like below figure(STAR type).
  • Page 72 Electrical Wiring u UX2 Chassis Wire Connection Left Side Right Side Main Power Terminal Block Main Power Main Power Main Power Main Power Main Power Main Power Terminal Block Terminal Block Terminal Block Terminal Block Terminal Block Terminal Block Power/Ground lines Power/Ground lines Ground Cable Ground Cable...
  • Page 73 Electrical Wiring u UX3 Chassis Wire Connection Right Side Left Side Main Power Terminal Block Main Power Main Power Main Power Main Power Main Power Main Power Terminal Block Terminal Block Terminal Block Terminal Block Terminal Block Terminal Block Power/Ground lines Power/Ground lines Ground Cable Ground Cable...
  • Page 74 Electrical Wiring Location of setting dip switch n SUB PCB DIP-SW01 DIP-SW02 7 - Segment SW03B (DATA CONFIRM) SW02B (AUTO ADDRESS) Outdoor Unit...
  • Page 75 Electrical Wiring DIP switch setting n 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 76 Electrical Wiring n 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. Index 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ●...

  • Page 77: Hr Unit Pcb

    HR Unit PCB HR Unit PCB #4 valve housing #1 valve housing #1 cooling valve LED(green) #1 heating valve LED(red) 7-SEG SW05M (Switch for addressing HR unit) SW01M SW02M SW01M/SW03M/SW04M (Dip switch for setup of (Switch for manual valve SW03M SW04M the function of HR unit) addressing)
  • Page 78 HR Unit PCB 3) Selection of the model of the HR unit (For 2 branches) (For 3 branches) (For 4 branches) PRHR021 PRHR031 PRHR041 Initial Setting 1 branches Connected 2 branches Connected 3 branches Connected 4 branches Connected h Each model is shipped with the switches No.2 and No.3 pre-adjusted as above in the factory. WARNING •...
  • Page 79 HR Unit PCB 4) Setting the Valve Group. DIP S/W setting Example Indoor Unit Indoor Unit Not control Indoor Unit Indoor Unit Indoor Unit No.1, 2 Valve Indoor Unit Large capacity indoor unit Control Indoor Unit No.2, 3 Valve Large capacity indoor unit Control Indoor Unit Large capacity indoor unit...
  • Page 80 HR Unit PCB 2. SW05M (Rotary S/W for addressing HR unit) Must be set to '0' when installing only one HR unit. When installing multiple HR units, address the HR units with sequentially increasing numbers starting from '0'. Ex) Installation of 3 HR units 3.
  • Page 81 HR Unit PCB 2) Zoning setting - Set the address of the valve of the HR unit to the central control address of the connected indoor unit. - SW01M : selection of the valve to address SW03M : increase in the digit of 10 of valve address SW04M : increase in the last digit of valve address SW05M :Rotary S/W - Prerequisite for manual valve addressing : central control address of each indoor unit must be preset...
  • Page 82 HR Unit PCB Auto addressing for indoor units and HR units 1) Auto addressing for indoor unit 2) Auto pipe detection 3) Manual pipe detection(Execute in case of Auto pipe detection failure) • Turn off all the indoor units before auto addressing. If indoor unit is operated, auto addressing would not be completed.
  • Page 83 HR Unit PCB 10) Pipe detection proceed. 11) 5~30 minutes are required depending on the number of the indoor units and outdoor temperature. 12) The number of the indoor units installed is displayed on 7-SEG of the outdoor unit main PCB for about 1 minute •...
  • Page 84 HR Unit PCB Flow chart of auto-addressing for indoor units Power On Waiting 3 minutes Press RED Button for 10~15sec. (SW02B) Auto addressing start 7-segment LED = 88 Don’t press RED Button (H/P : SW0B, C/O : SW02V) The number of the indoor units connected is displayed at 7-SEG of the outdoor unit main PCB...
  • Page 85 HR Unit PCB Flow chart of auto addressing for pipe detection Confirmation of indoor unit address setting Outdoor unit is operated for 5~60 minues. Turn No.1 of SW02M of HR unit PCB off. Is the pipe setting condition Confirm that the setting of No.2, 3 of satisfied during the operation of SW02M corresponds with the number of indoor unit?
  • Page 86 HR Unit PCB Flow chart of manual addressing for pipe detection Execute in case of Auto pipe detection failure Wait for about 5 minutes. Turn No.1 of SW02M of HR unit PCB on. The number of the indoor units installed is displayed.
  • Page 87 HR Unit PCB Example of manual valve addressing (Non-Zoning setting) (In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) • Prerequisite for manual valve addressing: central control address of each indoor unit must be preset differ- ently at its wired remote control.
  • Page 88 HR Unit PCB Example of manual valve addressing (Zoning setting) (In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) Zoning control is connecting 2 or more indoor units at one pipe of HR unit. In case of Zoning control, in order to set controls with multiple indoor units connection uses the rotary switch.
  • Page 89 HR Unit PCB Example of checking valve address (In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) Display and Setup Setup and Contents • Operation: Turn dip S/W No.1 on. •...
  • Page 90 HR Unit PCB Setting method of Master indoor unit in zoning 1) Turn dip switch 5,6,10 on at system off. 2) Set the left Ratary switch for HR unit.(Rotary switch No. "0" ‘ HR unit No. "1") 3) Set the right Ratary switch for IDU unit.(Rotary switch No. "0" ‘ HR unit branch No. "1") 4) Display the Master IDU No.
  • Page 91 HR Unit PCB Example) Group number setting Group Indoor unit number indicate the group number number point out indoor unit number Group recognizing the simple central controller No.0 group (00~0F) No.1 group (10~1F) No.2 group (20~2F) No.3 group (30~3F) No.4 group (40~4F) No.5 group (50~5F) No.6 group (60~6F) No.7 group (70~7F)

  • Page 92: 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 93 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 94 Test Run Sensor Checking Function Sensor checking function judges whether the current temperature of indoor and outdoor unit sensors is right or not. 3 indoor temperature sensors, 10 outdoor temperature sensor Note 1) , 2 outdoor pressure sensors. This function is used along with Refrigerant Auto recharge and Quantity auto decide function. It is used for judging sensor abnormality.
  • Page 95 Test Run Start 3 minutes past after power reset DIP switch set Setting 1 Setting 2 Setting 3 Setting 4 Note 3) Press black button for 2 seconds Heat Pump? Press black button for 5 seconds Press black button for Sensor Normal 5 seconds Setting 1...
  • Page 96 Test Run Display codifica errore controllo sensori 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 Unità esterna. Indoor sensor error : Outdoor sensor error : * 5 number of errors is displayed Displaying error content...
  • Page 97 Test Run Refrigerant Auto Charging (Setting 1) 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. Start Wait for 3 min. after power reset Set the Dip S/W.
  • Page 98 Test Run Low pressure Low pressure Low pressure manifold gas pipe gas pipe gas 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.
  • Page 99 Test Run Refrigerant Checking Function (Setting 2) This function judges refrigerant leakage and overcharging It can be used with refrigerant auto charging function. Inspection Start Press black button for 2 seconds Display Error Proper Temperature Thermo off indoor unit Decide Refrigerant Quantity Display Error Based on Refrigerant Quantity Press black button for 2 seconds...
  • Page 100 Test Run CAUTION 1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range) IDU : 20 ~ 35 °C ODU : 0 ~ 43 °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 101 Test Run Integrated Test Running Function_Cooling Mode (Setting 3) This function is checking process for normal operation of parts and system On operating system. • All processes carry out included refrigerant amount judge logic and check normal condition of parts on cooling mode. •...
  • Page 102 Test Run Integrated Test Running Function_Heating Mode (Setting 4) This function is checking process for normal operation of parts and system On operating system. • All processes carry out included refrigerant amount judge logic and check normal condition of parts on heating mode. •...
  • Page 103 Test Run CAUTION 1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range) IDU : 20 ~ 35 °C ODU : 0 ~ 43 °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 104 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 RPM / Time Settings Capacity Judgment Operation...
  • Page 105 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 ODU power reset Set the DIP S/W OFF Power reset Set the DIP S/W ON Vacuum mode cancellation...
  • Page 106 Test Run Static pressure compensation mode This function secures the air flow rate of ODU, in case static pressure has been applied like using duct at fan discharge of ODU. n Static pressure compensation dip S/W setting method High static pressure mode : Set DIP S/W Static pressure compensation mode cancellation Static pressure compensation mode setting method...
  • Page 107 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 108 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 109 Test Run Display Title Cause of Error Master Outdoor Unit Constant Speed System is turned off by Master Outdoor Uunit Constant Speed Compressor2 High Discharge Temperature Compressor2 High Discharge Temperature Slave1 Outdoor Unit Constant Speed System is turned off by Slave1 Outdoor Unit Constant Speed Compressor2 High Discharge Temperature Compressor2 High Discharge Temperature Slave2 Outdoor Unit Constant Speed...
  • Page 110 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 111 Test Run Display Title Cause of Error Master Outdoor Unit Heat Master Outdoor Unit Heat Exchanger Temperature 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 Exchanger Temperature...
  • Page 112 Test Run Display Title Cause of Error Master Outdoor Unit Faulty IPM Master Outdoor Unit IPM Temperature Sensor short/open Temperature Sensor Slave1 Outdoor Unit IPM Temperature Sensor Slave1 Outdoor Unit Faulty IPM Temperature Sensor short/open Slave2 Outdoor Unit IPM Temperature Sensor Slave2 Outdoor Unit Faulty IPM short/open Temperature Sensor...
  • Page 113 Test Run Display Title Cause of Error Inverter PCB EEPROM Error of Access Error of Inverter PCB of Master Outdoor Unit Master Outdoor Unit Inverter PCB EEPROM Error of Access Error of Inverter PCB of Slave1 Outdoor Unit Slave1 Unit Inverter PCB EEPROM Error of Access Error of Inverter PCB of Slave2 Outdoor Unit Slave2 Unit...
  • Page 114 Test Run Display Title Cause of Error Master Outdoor Unit Fan DC Link Master Outdoor Unit Fan DC Link High Voltage Error High Voltage Error Slave1 Outdoor Unit Fan DC Link Slave1 Outdoor Unit Fan DC Link High Voltage Error High Voltage Error Slave2 Outdoor Unit Fan DC Link Slave2 Outdoor Unit Fan DC Link High Voltage Error...
  • Page 115 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 main PCB of Slave1 Outdoor Unit Slave1 Outdoor Unit and Other...
  • Page 116 Test Run Display Title Cause of Error Master Outdoor Unit Subcooling Master Outdoor Unit Subcooling Outlet Temperature Outlet Temperature Sensor Error Sensor open or short Slave1 Outdoor Unit Subcooling Slave1 Outdoor Unit Subcooling Outlet Temperature Outlet Temperature Sensor Error Sensor open or short 1 1 5 Slave2 Outdoor Unit Subcooling Slave2 Outdoor Unit Subcooling Outlet Temperature...
  • Page 117 Test Run Display Title Cause of Error Master outdoor unit Main Board Main- Master Outdoor Unit Main Board Main-Sub Micom com- Sub Micom communication error munication failed Slave1 outdoor unit Main Board Main- Slave1 Outdoor Unit Main Board Main-Sub Micom com- munication failed Sub Micom communication error 1 8 2...

  • Page 118: New Function

    New Function New Function Multi V III provide as following new function New Function Applied item Demand Control * Night Low Noise Control ODU Dry contact (PQDSBDCVM0) Solution Accessory Error Alarm Monitoring Independent Power module Independent Power module Solution Accessory (ʻ11.01 available) * Demand control is not allowed in the Heat Recovery model.
  • Page 119 New Function 1. ODU Dry Contact ODU Dry contact has provided Three different functions. - Demand control - Night Low Noise control - Error Alarm Monitoring function [ODU Dry contact] - Feature and Parts Naming 1. SWDIP : Switch to select main function 2.
  • Page 120 New Function 2. ODU Dry contact with Central controller : With Single Outdoor unit Multi-V WIRE ASSY 1(1EA) CN_OUT : With Series Outdoor units Multi-V WIRE ASSY 1(1EA) BUS_A Central Control BUS_B Devices CN_OUT Outdoor Unit...
  • Page 121 <Without External power source> <With External power source> SW_VOLT2 SW_VOLT1 SW_VOLT2 SW_VOLT1 Notes LG does not Do not input the voltage signal in LG does not Connect separate "NON VOLT" setting mode otherwise supply this section External voltage of supply this section...
  • Page 122 New Function 2. Using Analog signal with DDC Module SW_VOLT2 SW_VOLT1 DC 0~10V input Direct Digital Controller [Control Value] - Using Contact signal Cooling Heating Rotary Volt 100% Step Control Step Control Not-Control Not-Control 100% 100% Comp. System Control Comp OFF Comp OFF Signal Input...
  • Page 123 New Function - Using Analog signal with DDC Module Comp capacity Input_1 Input_2 Input_3 STEP Of outdoor unit(%) No control 100% COMP OFF No control COMP OFF No control Comp. System Control COMP OFF Signal No control Input Step ALL OFF No control ALL OFF No control...
  • Page 124 New Function 1.2 Night Low Noise Control ODU Dry contact has provided Two methods for Night Low Noise Control - Automatically operating : Using previous method - Manual operating : Using simple switch and timer [Setting] - For ODU Dry contact Position Function L1 2 3 4...
  • Page 125 New Function 2. Independent power module The main PCB controls the EEV kit when the power is turn on. The independent sub PCB controls the EEV kit when the power is turn off. Concept of independent power module 3 phase 400V “...

  • Page 126: 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 127 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 n 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...

  • Page 128: 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 129: Installation Guide For Harmonics

    Installation Guide for Harmonics Installation Guide for Harmonics The below Installation guide is limited applicable only for model Model : ARUB200LT3, ARUB180LT3 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 to 4723 kVA at the interface point between the userʼs supply and the public system.
  • Page 130 Installation Guide for Harmonics The below Installation guide is limited applicable only for model Model : ARUB160LT3, ARUB140LT3 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 to 3539 kVA at the interface point between the userʼs supply and the public system.
  • Page 131 Installation Guide for Harmonics The below Installation guide is limited applicable only for model Model : ARUB120LT3, ARUB100LT3, ARUB80LT3 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 to 4068 kVA at the interface point between the userʼs supply and the public system.
  • Page 132 Outdoor Unit...

This manual is also suitable for:

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