LG ARUV140LTS4 Installation Manual
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LG ARUV140LTS4 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.
P/NO : MFL67221407
www.lg.com

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Summary of Contents for LG ARUV140LTS4

  • 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. www.lg.com P/NO : MFL67221407...
  • Page 2 TIPS FOR SAVING ENERGY TIPS FOR SAVING ENERGY Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below: •...

  • Page 3: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product WARNING It can result in serious injury or death when the directions are ignored CAUTION It can result in minor injury or product damage when the directions are ignored WARNING...
  • Page 4 IMPORTANT SAFETY INSTRUCTIONS • When installing and moving the air conditioner to another site, do not charge it with a different refrigerant from the refrigerant specified on the unit. - If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may mal- function and the unit may be damaged.
  • Page 5 IMPORTANT SAFETY INSTRUCTIONS CAUTION Installation • Always check for gas (refrigerant) leakage after installation or repair of product. - Low refrigerant levels may cause failure of product. • Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. - It may cause a problem for your neighbors.
  • Page 6 IMPORTANT SAFETY INSTRUCTIONS • Safely dispose of the packing materials. - Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries. - Tear apart and throw away plastic packaging bags so that children may not play with them. If children play with a plastic bag which was not torn apart, they face the risk of suffocation.

  • Page 7: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS Refrigerant piping system TIPS FOR SAVING EN- Refrigerant charging ERGY Distribution Method Branch pipe Fitting IMPORTANT SAFETY IN- Leak Test and Vacuum drying STRUCTIONS Vacuum Mode Thermal insulation of refrigerant piping INSTALLATION ELECTRICAL WIRING PROCESS Caution OUTDOOR UNITS IN-...

  • Page 8: 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 9: Outdoor Units Information

    OUTDOOR UNITS INFORMATION OUTDOOR UNITS INFORMATION CAUTION Combination Ratio(50~200%) Outdoor Number Connection Ratio Single outdoor units 200% Double outdoor units 160% Triple outdoor units 130% Notes : * We can guarantee the operation only within 130% Combination. If you want to connect more than 130% combination, please contact us and dis- cuss the requirement like below.
  • Page 10 OUTDOOR UNITS INFORMATION Number of outdoor units 2 Outdoor Units Capacity (HP) ARUN220LTS4 ARUN240LTS4 ARUN260LTS4 ARUN280LTS4 Combination Unit Model ARUN120LTS4 ARUN120LTS4 ARUN140LTS4 ARUN160LTS4 Independent Unit ARUN100LTS4 ARUN120LTS4 ARUN120LTS4 ARUN120LTS4 (920×1,680×760)×2 (920×1,680×760)×2 (1,240×1,680×760)×1 (1,240×1,680×760)×1 Dimensions (WxHxD) + (920×1,680×760)×1 + (920×1,680×760)×1 Net Weight 201 ×...
  • Page 11 OUTDOOR UNITS INFORMATION Number of outdoor units 3 Outdoor Units Capacity (HP) ARUN540LTS4 ARUN560LTS4 ARUN580LTS4 ARUN600LTS4 Combination Unit ARUN200LTS4 ARUN200LTS4 ARUN200LTS4 ARUN200LTS4 Model ARUN200LTS4 ARUN200LTS4 ARUN200LTS4 ARUN200LTS4 Independent Unit ARUN140LTS4 ARUN160LTS4 ARUN180LTS4 ARUN200LTS4 Dimensions (WxHxD) (1,240×1,680×760)×3 (1,240×1,680×760)×3 (1,240×1,680×760)×3 (1,240×1,680×760)×3 Net Weight 280 ×...
  • Page 12 • Do not use ARUN220LTN4 in combination models. Cooling only Model Name : ARUV***LTS4 Number of outdoor units 1 Outdoor Unit Capacity (HP) Combination Unit ARUV100LTS4 ARUV120LTS4 ARUV140LTS4 Model Independent Unit ARUV100LTS4 ARUV120LTS4 ARUV140LTS4 Dimensions (WxHxD) (920×1,680×760)×1 (920×1,680×760)×1 (920×1,680×760)×1 Net Weight 180 ×...
  • Page 13 OUTDOOR UNITS INFORMATION Number of outdoor units 2 Outdoor Units Capacity (HP) ARUV220LTS4 ARUV240LTS4 ARUV260LTS4 ARUV280LTS4 Combination Unit Model ARUV120LTS4 ARUV120LTS4 ARUV140LTS4 ARUV160LTS4 Independent Unit ARUV100LTS4 ARUV120LTS4 ARUV120LTS4 ARUV120LTS4 (920×1,680×760)×2 (920×1,680×760)×2 (920×1,680×760)×2 (1,240×1,680×760)×1 Dimensions (WxHxD) + (920×1,680×760)×1 Net Weight 180 × 1 + 190 × 1 190 ×...
  • Page 14 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 Model Independent Unit ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV200LTS4 ARUV140LTS4 ARUV160LTS4 ARUV180LTS4 ARUV200LTS4 (1,240×1,680×760)×2 (1,240×1,680×760)×3 (1,240×1,680×760)×3 (1,240×1,680×760)×3 Dimensions (WxHxD) + (920×1,680×760)×1 Net Weight 260 × 2 + 190 × 1 260 × 2 + 225 × 1 260 × 3 260 ×...
  • Page 15 OUTDOOR UNITS INFORMATION Model Name : ARUV220LTN4 Number of outdoor units 1 Outdoor Unit Capacity (HP) ARUV220LTN4 Combination Unit Model ARUV220LTN4 Independent Unit (1,240×1,680×760)×1 Dimensions (WxHxD) 280 × 1 Net Weight Precharged Refrigerant amount 15.88(5/8) Liquid mm (inch) Pipe Connctions 28.58(1 1/8) mm (inch) 35(44)

  • Page 16: Environment- Friendly Alternative Refrigerant R410A

    ENVIRONMENT-FRIENDLY ALTERNATIVE REFRIGERANT R410A ENVIRONMENT-FRIENDLY ALTERNATIVE RE- FRIGERANT R410A The refrigerant R410A has the property of higher operating pressure in comparison with R22. Therefore, all materials have the characteristics of higher resisting pressure than R22 ones and this characteristic should be also considered during the installation. R410A is an azeotrope of R32 and R125 mixed at 50:50, so the ozone depletion potential (ODP) of R410A is 0.

  • Page 17: Select The Best Location

    SELECT THE BEST LOCATION SELECT THE BEST LOCATION Select space for installing outdoor unit, which will meet the following conditions: • No direct thermal radiation from other heat sources • No possibility of annoying neighbors by noise from unit • No exposition to strong wind •...

  • Page 18: Installation Space

    INSTALLATION SPACE INSTALLATION SPACE Individual Installation 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≤Side Space≤49mm) (Side Space≥49mm) A≥10 A≥50 B≥300 B≥100...
  • Page 19 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 20: 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 21: 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 shall have width of at least 100mm under the Unit’s legs before being fixed. •...

  • Page 22: Foundation For Installation

    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 23: 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. Cut the pipes and the cable - Use the accessory piping kit or the pipes pur- Copper Slanted Uneven Rough tube chased locally.
  • Page 24 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 25 INSTALLATION Closing shutoff valve Remove the cap and turn the valve clockwise with the hexagon wrench. Securely tighten the valve until the shaft contacts the main body seal. Make sure to tighten the cap securely. * For the tightening torque, refer to the table on the below. Tightening torque Tightening torque N·m(Turn clockwise to close) Shutoff...

  • Page 26: Plumbing Materials And Storage Methods

    INSTALLATION Plumbing materials and storage methods Pipe must be able to obtain the specified thickness and should be used with low impurities. Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound. Should not be mixed with contaminations such as dust, moisture. Refrigerant piping on three principles Drying Cleanliness...
  • Page 27 INSTALLATION Nitrogen substitution method Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed on the internal piping. The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil pump in compressor.

  • Page 28: 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.

  • Page 29: Pipe Connections Between Indoor And Outdoor Unit

    PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT - Install at places where it can endure the weight and vibration/noise of the outdoor unit. - The outdoor unit supports at the bottom shall have width of at least 100mm under the Unit’s legs before being fixed.

  • Page 30: Pipe Drawing Out During Single / Series Connection

    PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Remove leakage prevention cap • Remove the leakage prevention cap attached to the outdoor unit service valve before pipe work. • Proceed the leakage prevention cap removal as follows: - Verify whether the liquid/gas pipes are locked. - Extract remaining refrigerant or air inside using the service port.
  • Page 31 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Method of drawing out pipes on the bottom side - Drawing out common pipe through side panel Liquid pipe Gas pipe Remove only liquid/gas pipe Knock out...

  • Page 32: Refrigerant Piping System

    PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Refrigerant piping system 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) h 40m 2 Outdoor Units...
  • Page 33 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 3 Outdoor Units Slave2 Example : 5 Indoor Units connected Slave1 Master Ⓐ : Outdoor Unit 10m or less Ⓑ : 1st branch (Y branch) ODU Capacity Ⓒ : Indoor Units Master ≥ Slave1 ≥ Slave 2 Ⓓ...
  • Page 34 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Refrigerant pipe diameter from branch to branch (B,C,D) Downward Indoor Unit Liquid pipe [mm(inch)] Gas pipe [mm(inch)] total capacity [kW(Btu/h)] ≤ 5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) < 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8) ≤ 22.4(76,400) Ø9.52(3/8) Ø19.05(3/4) < 33.6(114,700) Ø9.52(3/8) Ø22.2(7/8) <...
  • Page 35 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Refrigerant pipe diameter from outdoor unit to first branch. (A) Increased Pipe Diameter Upward Out- door unit Standard Pipe Diameter When pipe length is 90m or When level difference is 50m total capacity more from ODU to 1st branch or more Liquid pipe...
  • Page 36 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 3 Outdoor Units Slave2 Example : 6 Indoor Units connected Slave1 Ⓐ : Outdoor Unit Master Ⓑ : Header branch ODU Capacity Ⓒ : Indoor Units Master ≥ Slave1 ≥ Slave2 10m or less Ⓓ...
  • Page 37 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT WARNING Pipe length after header branching (a~f) It is recommended that difference in length of the pipes connected to the Indoor Units is minimized. Performance difference between Indoor Units may occur. • * : Assume equivalent piping length of Y branch to be 0.5m, that of header to be 1m, calcu- lation purpose •...
  • Page 38 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 3 Outdoor Units Slave2 Example : 5 Indoor Units connected Slave1 Master Ⓐ : Outdoor Unit 10m or ODU Capacity less Ⓑ : 1st branch(Y branch) Master ≥ Slave1 ≥ Slave2 Ⓒ : Y branch Ⓓ...
  • Page 39 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Total pipe length = A+B+C+a+b+c+d+e ≤ 1,000m Longest pipe length *Equivalent pipe length A+B+b ≤ 150m(200m**) A+B+b ≤ 175m(225m**) Longest pipe length after 1st branch B+b ≤ 40m(90m**) Difference in height (Outdoor Unit ÷ Indoor Unit) H ≤...
  • Page 40 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Outdoor unit Connection WARNING • In case of pipe diameter B connected after first branch is bigger than the main pipe diame- ter A, B should be of the same size with A. Ex) In case indoor unit combination ratio 120% is connected to 24HP(67.2 kW) outdoor unit.
  • Page 41 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 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.
  • Page 42 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 prop- erly. (Example 1) Toward indoor unit Toward indoor unit...
  • Page 43 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT - When connecting the pipes between the outdoor units, the accumulation of oil in the slave out- door 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 44 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT The amount of Refrigerant The calculation of the additional charge should take into account the length of pipe and CF(correc- tion Factor) value of indoor unit. Additional charge(kg) Total liquid pipe : Ø25.4 mm x 0.480(kg/m) Total liquid pipe : Ø22.2 mm x 0.354(kg/m)

  • Page 45: Refrigerant Charging

    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 If the above equation can not be satisfied, then follow the following steps.

  • Page 46: Distribution Method

    PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Distribution Method Horizontal Distribution Slave Master Slave 3rd main pipe distribution Master Slave Master Main pipe Distribution Main pipe Distribution Vertical Distribution - Ensure that the branch pipes are attached vertically. Slave Master Slave Master The others...

  • Page 47: Branch Pipe Fitting

    PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Branch pipe Fitting Y branch Ⓐ To Branch Piping or Indoor Unit Ⓑ To Outdoor Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.) Horizontal Facing Facing plane downwards...
  • Page 48 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 49 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Y branch pipe [unit:mm] Models Gas pipe Liquid pipe I.D12.7 I.D12.7 I.D6.35 I.D.6.35 I.D9.52 I.D15.88 I.D15.88 I.D9.52 I.D.6.35 I.D15.88 ARBLN01621 I.D12.7 I.D.9.52 O.D9.52 I.D19.05 O.D15.88 I.D12.7 I.D22.2 I.D19.05 I.D15.88 I.D19.05 I.D12.7 I.D12.7 I.D9.52 I.D19.05 I.D25.4 I.D15.88...
  • Page 50 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Header [unit:mm] Models Gas pipe Liquid pipe ID6.35 ID12.7 ID6.35 4 branch ID12.7 ID9.52 ID15.88 ID9.52 ARBL054 ID15.88 ID12.7 ID9.52 ID19.05 ID15.88 ID12.7 ID6.35 7 branch ID12.7 ID9.52 ID15.88 ARBL057 120 150 ID15.88 ID15.88 ID19.05 ID9.52...

  • Page 51: Leak Test And Vacuum Drying

    vPIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Leak Test and Vacuum drying Leak test Leak test should be made by pressurizing nitrogen gas to 3.8 MPa(38.7kgf/cm2). If the pressure does not drop for 24 hours, the system passes the test. If the pressure drops, check where the nitrogen leaks.
  • Page 52 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Vacuum Vacuum drying should be made from the service port provided on the outdoor unit’s service valve to the vacuum pump commonly used for liquid pipe, gas pipe 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 53: Vacuum Mode

    PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT Vacuum Mode This function is used for creating vacuum in the system after compressor replacement, ODU parts replacement or IDU addition/replacement. Vacuum mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’...

  • Page 54: Thermal Insulation Of Refrigerant Piping

    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 sepa- rately 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 55: Electrical Wiring

    ELECTRICAL WIRING ELECTRICAL WIRING Caution - 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 56 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 57: 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 cable between main and sub outdoor unit through the terminal block. - Connect communication cables between outdoor unit and indoor units through the terminal block.

  • Page 58: Communication And Power Cables

    ELECTRICAL WIRING Communication and Power Cables Communication cable - Types : shielding cable - Cross section : 1.0~1.5mm - Maximum allowable temperature: 60°C - Maximum allowable cable length: under 1000m Remote control cable - Types : 3-core cable Central control cable Product type Cable type Diameter...

  • Page 59: Wiring Of Main Power Supply And Equipment Capacity

    ELECTRICAL WIRING Wiring of main power supply and equipment capacity - Use a separate power supply for the Outdoor Unit and Indoor Unit. - Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections. - The cable size is the minimum value for metal conduit wiring.

  • Page 60: Field Wiring

    ELECTRICAL WIRING Field Wiring Single outdoor unit Outdoor Power supply (3Ø 4wires) [Outdoor Unit] (Main Switch) R S T N Voltage range(V) Switch Frequency Outdoor Indoor Fuse Indoor 60Hz 380V 220V Power supply 50Hz 380-415V 220-240V (1Ø 2wires) Power cable (4 Wires Cable) Power cable (2 Wires Cable)
  • Page 61 ELECTRICAL WIRING Series outdoor units When the power source is connected In series between the units. Outdoor Power supply (3Ø 4wires) [Master] [Slave1] [Slave2] [Slave3] (Main Switch) R S T N Switch Fuse Indoor Power supply (1Ø 2wires) Power cable (4 Wires Cable) Power cable (2 Wires Cable)
  • Page 62 ELECTRICAL WIRING WARNING • Indoor Unit ground wires are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connec- tion to pipe). • Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.
  • Page 63 ELECTRICAL WIRING Example) Connection of transmission wire [BUS type] [STAR type] - Connection of communication cable must be - Abnormal operation can be caused by com- installed like below figure between indoor munication defect, when connection of unit to outdoor unit. communication cable is installed like below figure(STAR type).
  • Page 64 ELECTRICAL WIRING Example) Connection of power and communication cable (UX2) Left Side Right Side Main power Main power terminal block terminal block Ground wire Ground wire Power/ Power/ Ground cable Ground cable Over Over 50mm gap 50mm gap Communication Communication cable cable Front Side 1...
  • Page 65 ELECTRICAL WIRING Example) Connection of power and communication cable (UX3) Left Side Right Side Main power Main power terminal block terminal block Ground wire Ground wire Power/ Power/ Ground cable Ground cable Over Over 50mm gap 50mm gap Communication Communication cable cable Front Side 1...

  • Page 66: Checking The Setting Of Outdoor Units

    ELECTRICAL WIRING Checking the setting of outdoor units Checking according to dip switch setting - 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. Checking the initial display The number is sequentially appeared at the 7 segment in 5 seconds after applying the power.

  • Page 67: Automatic Addressing

    ELECTRICAL WIRING Automatic Addressing The address of indoor units would be set by Automatic Addressing - Wait for 3 minutes after supplying power. (Master and Slave outdoor units, indoor units) - Press RED button of the outdoor units for 5 seconds. (SW01C) - A “88”...
  • Page 68 ELECTRICAL WIRING The Procedure of Automatic Addressing Power On Waiting 3 minutes Press RED Button for 5 sec. (SW01C) Automatic addressing start 7-segment LED = 88 Don’t press RED Button (SW01C) • Automatic addressing setting end Numbers of indoor unit connection set whose addressing is completed are indicated for 30seconds Waiting about 2~7 minutes on 7-segment LED after completing setting...
  • Page 69 ELECTRICAL WIRING Setting the function Select the mode/function/option/value using ‘▶’, ‘◀’ Button and confirm that using the ‘●’ but- ton after dip switch No.5 is turned on. DIP-SW01 7 - Segment SW04C ( : cancel) SW03C ( : forward) SW02C ( : backward) SW01C ( : confirm) SW01D (reset)

  • Page 70: Group Number Setting

    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 cables connected to CEN.A and CEN.B terminal should be connected to central control of Outdoor Unit with care for their polarity (A-A, B-B ).

  • Page 71: Cool & Heat Selector

    ELECTRICAL WIRING Cool & Heat selector mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : “Fn1” Push the ‘●’ button Select the Option using ‘▶’, ‘◀’...

  • Page 72: Static Pressure Compensation Mode

    ELECTRICAL WIRING 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. Static pressure compensation mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’...

  • Page 73: Night Low Noise Function

    ELECTRICAL WIRING 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. Night low noise function setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’...

  • Page 74: Overall Defrost Mode

    ELECTRICAL WIRING Overall defrost mode mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : “Fn4” Push the ‘●’ button Select the Option using ‘▶’, ‘◀’...

  • Page 75: Setting The Odu Address

    ELECTRICAL WIRING Setting the ODU address mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : “Fn5” Push the ‘●’ button Select the Option using ‘▶’, ‘◀’...

  • Page 76: Snow Removal & Rapid Defrost

    ELECTRICAL WIRING Snow removal & rapid defrost mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : “Fn6” Push the ‘●’ button Select the Option using ‘▶’, ‘◀’...

  • Page 77: Target Pressure Adjusting

    ELECTRICAL WIRING Target pressure adjusting mode setting method Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Select the Function using ‘▶’, ‘◀’ Button : Select the Function using ‘▶’, ‘◀’ Button : “Fn8”...

  • Page 78: Self-Diagnosis Function

    ELECTRICAL WIRING Self-Diagnosis Function Error Indicator - This function indicates types of failure in self-diagnosis and occurrence of failure for air condi- tion. - 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 79 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Inverter Compres- DC charging is not performed at Master Outdoor Unit sor DC link Low Voltage after starting relay turn on. Slave1 Outdoor Unit Inverter Compres- DC charging is not performed at Slave1 Outdoor Unit sor DC link Low Voltage after starting relay turn on.
  • Page 80 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Inverter Compres- Master Outdoor Unit Inverter Compressor1 High Dis- sor1 High Discharge Temperature charge Temperature Slave1 Outdoor Unit Inverter Compres- Slave1 Outdoor Unit Inverter Compressor1 High Dis- sor1 High Discharge Temperature charge Temperature Slave2 Outdoor Unit Inverter Compres- Slave2 Outdoor Unit Inverter Compressor1 High Dis-...
  • Page 81 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Inverter Compres- Master Outdoor Unit Inverter Compressor CT Sensor sor CT Sensor Fault open or short Slave1 Outdoor Unit Inverter Compres- Slave1 Outdoor Unit Inverter Compressor CT Sensor sor CT Sensor Fault open or short Slave2 Outdoor Unit Inverter Compres- Slave2 Outdoor Unit Inverter Compressor CT Sensor...
  • Page 82 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Heat Exchanger Master Outdoor Unit Heat Exchanger Temperature Sen- Temperature Sensor (Front side) Fault sor(Front side) open or short Slave1 Outdoor Unit Heat Exchanger Slave1 Outdoor Unit Heat Exchanger Temperature Sen- Temperature Sensor (Front side) Fault sor (Front side) open or short Slave2 Outdoor Unit Heat Exchanger...
  • Page 83 ELECTRICAL WIRING Display Title Cause of Error Excessive connection of indoor units compared to 5 1 1 Excessive capacity of indoor units capacity of Outdoor Unit Communication error : inverter PCB Failing to receive inverter signal at main PCB of ’...
  • Page 84 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Inverter Heatsink Master Outdoor Unit Inverter Heatsink Temperature Sen- Temperature Sensor Fault sor open or short Slave1 Outdoor Unit Inverter Heatsink Slave1 Outdoor Unit Inverter Heatsink Temperature Sen- Temperature Sensor Fault sor open or short Slave2 Outdoor Unit Inverter Heatsink Slave2 Outdoor Unit Inverter Heatsink Temperature Sen-...
  • Page 85 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Fan Over Current Master Outdoor Unit Fan Current is over 5A Error Slave1 Outdoor Unit Fan Over Current Slave1 Outdoor Unit Fan Current is over 5A Error Slave2 Outdoor Unit Fan Over Current Slave2 Outdoor Unit Fan Current is over 5A Error Slave3 Outdoor Unit Fan Over Current...
  • Page 86 ELECTRICAL WIRING Display Title Cause of Error Communication Error Between Master Failing to receive Slave Unit signal at main PCB of Outdoor Unit and Other Outdoor Unit Master Outdoor Unit Communication Error Between Slave1 Failing to receive Master and other Slave Unit signal Outdoor Unit and Other Outdoor Unit at main PCB of Slave1 Outdoor Unit 1 0 4...
  • Page 87 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Subcooling Inlet Master Outdoor Unit Subcooling Inlet Temperature Temperature Sensor Error Sensor Error Slave1 Outdoor Unit Subcooling Inlet Slave1 Outdoor Unit Subcooling Inlet Temperature Temperature Sensor Error Sensor Error 1 1 4 Slave2 Outdoor Unit Subcooling Inlet Slave2 Outdoor Unit Subcooling Inlet Temperature Temperature Sensor Error...
  • Page 88 ELECTRICAL WIRING Display Title Cause of Error Master Outdoor Unit Heat Exchanger Master Outdoor Unit Heat Exchanger Temperature Temperature Sensor (upper part) Fault Sensor (upper part) Fault Slave1 Outdoor Unit Heat Exchanger Slave1 Outdoor Unit Heat Exchanger Temperature Temperature Sensor (upper part) Fault Sensor (upper part) Fault 1 5 3 Slave2 Outdoor Unit Heat Exchanger...

  • Page 89: 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 regula- tions 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 90 CAUTION FOR REFRIGERANT LEAK - 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 refrigerant in refrigerant facility (kg) In case the result of calculation exceeds = Refrigerant concentration the limiting concentration, perform the Capacity of smallest room where...

  • Page 91: Installation Guide At The Seaside

    INSTALLATION GUIDE AT THE SEASIDE INSTALLATION GUIDE AT THE SEASIDE In case, to install the outdoor unit on the sea- CAUTION side, set up a windbreak not to be exposed to the sea wind. • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.

This manual is also suitable for:

Aruv160lts4Aruv120lts4Aruv180lts4Aruv200lts4Arun080lts4Arun100lts4 ... Show all

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