LG MULTI V WATER IV ARWV100LAL4 Installation Manual
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LG MULTI V WATER IV ARWV100LAL4 Installation Manual

LG MULTI V WATER IV ARWV100LAL4 Installation Manual

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MFL67705803 2018. 9. 17. 오오 12:58 Page 1
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.
ARWV100LAL4
MFL67705803
Rev.00_091718
Copyright © 2013 - 2018 LG Electronics Inc. All Rights Reserved.
www.lg.com

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Summary of Contents for LG MULTI V WATER IV ARWV100LAL4

  • 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. ARWV100LAL4 www.lg.com MFL67705803 Rev.00_091718 Copyright © 2013 - 2018 LG Electronics Inc. All Rights Reserved.

  • Page 2: Table Of Contents

    MFL67705803 2018. 9. 17. 오오 12:58 Page 2 ARWV Series Outside unit Installation Manual TABLE OF CONTENTS Safety Precautions ......................3 Installation Process .......................7 Outside units Information....................8 Environment-friendly Alternative Refrigerant R410A ..........9 Select the Best Location....................9 Installation space ......................10 Water control ........................11 Lifting method ......................13 Installation ........................14 Refrigerant piping installation ..................19...

  • Page 3: Safety Precautions

    MFL67705803 2018. 9. 17. 오오 12:58 Page 3 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.
  • Page 4 MFL67705803 2018. 9. 17. 오오 12:58 Page 4 Safety Precautions When installing and moving the air condi- Do not reconstruct to change the settings of tioner to another site, do not charge it with a the protection devices. different refrigerant from the refrigerant specified on the unit.
  • Page 5 MFL67705803 2018. 9. 17. 오오 12:58 Page 5 Safety Precautions CAUTION n Installation Always check for gas (refrigerant) leakage Do not install the product where the noise or after installation or repair of product. hot air from the outside unit could damage the neighborhoods.
  • Page 6 MFL67705803 2018. 9. 17. 오오 12:58 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

    MFL67705803 2018. 9. 17. 오오 12:58 Page 7 Installation Process Installation Process Indicate clearly who is to be responsible for switch settings Determination of division work Make relationship between outside, 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...

  • Page 8: Outside Units Information

    MFL67705803 2018. 9. 17. 오오 12:58 Page 8 Outside units Information Outside units Information CAUTION • Ratio of the running Indoor Units to the Outside: Within 10 ~ 100% • A combination operation over 100% cause to reduce each indoor unit capacity. n Combination Ration(50~200%) Outside Number Connection Capacity...

  • Page 9: Environment-Friendly Alternative Refrigerant R410A

    MFL67705803 2018. 9. 17. 오오 12:58 Page 9 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.

  • Page 10: Installation Space

    MFL67705803 2018. 9. 17. 오오 12:58 Page 10 Installation space Installation space Individual Installation Required the minimum space as shown below for installation and check. If the space is not fit on this drawing, consult with LG. : Service area (unit : mm) Product (Outside unit)

  • Page 11: Water Control

    MFL67705803 2018. 9. 17. 오오 12:58 Page 11 Water control Water control Water control • Keep the water temperature between 10~45°C. Other it may cause the breakdown. - Standard water supply temperature is 30°C for Cooling and 20°C for heating. •...
  • Page 12 MFL67705803 2018. 9. 17. 오오 12:58 Page 12 Water control Standard table for water purity control The water may contain many foreign substances and hence may influence the performance and lifetime of the prod- uct due to the corrosion of the condenser and water pipe. (Use water source that complies with the below standard table for water purity control.) If you use water supply other than the tap water to supply the water for the cooling tower, you must do a water quality inspection.

  • Page 13: Lifting Method

    MFL67705803 2018. 9. 17. 오오 12:58 Page 13 Lifting method Lifting method • When carrying the unit suspended, 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 fours points so that impact is not applied to the unit. •...

  • Page 14: Installation

    MFL67705803 2018. 9. 17. 오오 12:58 Page 14 Installation Installation Location of anchor bolt 756 mm 62 mm 62 mm 632 mm The location of anchor bolt CAUTION • Be sure to install unit in a place strong enough to withstand its weight. Any lack of strength may cause unit to fall down, resulting in a personal injury.
  • Page 15 MFL67705803 2018. 9. 17. 오오 12:58 Page 15 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. Copper • Use the accessory piping kit or the pipes purchased lo- Slanted Uneven Rough tube 90°...
  • Page 16 MFL67705803 2018. 9. 17. 오오 12:58 Page 16 Installation FLARE SHAPE and FLARE NUT TIGHTENING TORQUE Precautions when connecting pipes • See the following table for flare part machining dimensions. • See the following table for tightening torque.(Applying too much torque may cause the flares to crack.) •...
  • Page 17 MFL67705803 2018. 9. 17. 오오 12:58 Page 17 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"...
  • Page 18 MFL67705803 2018. 9. 17. 오오 12:58 Page 18 Installation 4. Connecting branch pipe between outside units [Unit:mm] Outside units Model Gas Pipe Liquid Pipe 416(16-3/8) 331(13-1/32) 314(12-3/8) 408(16-1/16) I.D.15.88(5/8) I.D.15.88(5/8) I.D.28.58(1-1/8) I.D.28.58(1-1/8) (Master) (Slave1) I.D.12.7(1/2) I.D.19.05(3/4) I.D.22.2(7/8) I.D.9.52(3/8) I.D.31.8(1-1/4) I.D.34.9(1-3/8) ARCNN21 2 Unit I.D.12.7(1/2)

  • Page 19: Refrigerant Piping Installation

    MFL67705803 2018. 9. 17. 오오 12:58 Page 19 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 20 MFL67705803 2018. 9. 17. 오오 12:58 Page 20 Refrigerant piping installation Installation of water pipe 1) Water pipe system diagram • The water pressure resistance of the water pipe system of this product is 1.98MPa • When the water pipe passes indoors, make sure to execute heat insulation on the pipe so that water drops do not form on the outer side of the water pipe.
  • Page 21 MFL67705803 2018. 9. 17. 오오 12:58 Page 21 Refrigerant piping installation Pipe thickness Shear stress Tensile stress Bending moment Torque (N . m) (kgf . m) (N . m) (kgf . m) inch (kN) (kgf) (kN) (kgf) 12.7 19.05 1200 11.5 25.4 11.2...

  • Page 22: Device Protection Unit

    MFL67705803 2018. 9. 17. 오오 12:58 Page 22 Device protection unit Device protection unit Strainer on water pipe To protect the water cooling type product, you must install a strainer with 20 Mesh or more on the heat water supply pipe. If not installed, it can result in damage of heat exchanger by the following situation.

  • Page 23: Refrigerant Piping System

    MFL67705803 2018. 9. 17. 오오 12:58 Page 23 Refrigerant piping system Refrigerant piping system Y branch method Single outside unit system Example : 5 Indoor Units connected Ⓐ : Outside Unit Ⓑ : 1st branch direction Ⓒ : Y branch Ⓓ...
  • Page 24 MFL67705803 2018. 9. 17. 오오 12:58 Page 24 Refrigerant piping system Header Method Single outside unit system Example : 6 Indoor Units connected Ⓐ : Outside Unit Ⓑ : 1st branch Ⓒ : Y branch Ⓓ : Indoor Unit Ⓔ : Header branch L 150m Ⓕ...
  • Page 25 MFL67705803 2018. 9. 17. 오오 12:58 Page 25 Refrigerant piping system Combination of Y branch/header method Single outside unit system Example : 5 Indoor Units connected Ⓐ : Outside Unit Ⓑ : 1st branch Ⓒ : Y branch Ⓓ : Indoor Unit Ⓔ...
  • Page 26 MFL67705803 2018. 9. 17. 오오 12:58 Page 26 Refrigerant piping system Ú Refrigerant pipe diameter from branch to branch (B,C,D) Ú Total pipe length limited Classification Section Type Y branch Y/header branch Header branch A+B+b ≤ 150 m A+B+C+D+e Maximum pipe ≤...
  • Page 27 MFL67705803 2018. 9. 17. 오오 12:58 Page 27 Refrigerant piping system Ú Refrigerant pipe diameter from outside unit to first branch. (A, E, F) Increased Pipe Diameter Upward Outside unit Standard Pipe Diameter When pipe length is 90m or more from total capacity ODU to 1st branch Liquid pipe[mm(inch)]...
  • Page 28 MFL67705803 2018. 9. 17. 오오 12:58 Page 28 Refrigerant piping system u Cautions for header branch pipe WARNING • It is recommended to install the difference between the length of the pipe after header branch(a~f) and the length of the pipe connected to indoor unit to be the minimum. •...
  • Page 29 MFL67705803 2018. 9. 17. 오오 12:58 Page 29 Refrigerant piping system Examples of Wrong Pipe Connections • If outside units are located at different level, oil trap must be installed after each Y branch. • Oil trap should be located at same level of Y branch. (Heat Pump : High Pressure Vapor / Heat Recovery : High Pressure Vapor &...
  • Page 30 MFL67705803 2018. 9. 17. 오오 12:58 Page 30 Refrigerant piping system - Apply Oil Trap as shown below when the length of the pipe between the outside units is more than 2m. Otherwise, the unit may not operate properly. (Example 1) 2 m(6.6 ft) or less Toward indoor unit (Example 2)
  • Page 31 MFL67705803 2018. 9. 17. 오오 12:58 Page 31 Refrigerant piping system (Example 3) Oil Trap Toward indoor unit Toward indoor unit Calculation of amount of refrigerant The calculation of the additional charge should take account of the diameter and length of the pipe. Product Charge(kg) Ex) 10HP Additional charge (kg)
  • Page 32 MFL67705803 2018. 9. 17. 오오 12:58 Page 32 Refrigerant piping system Note: Fill in the f-gas Label attached on outside about the quantity of the fluorinated greenhouse gases ① Manufacturing site (See Model Name label) ② Installation site (If possible being placed adjacent to the service points for the addition or removal of re- frigerant) ③...
  • Page 33 MFL67705803 2018. 9. 17. 오오 12:58 Page 33 Refrigerant piping system 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.
  • Page 34 MFL67705803 2018. 9. 17. 오오 12:58 Page 34 Refrigerant piping system Branch pipe Fitting Y branch To Outside Unit To Branch Piping or Indoor Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.) Horizontal plane Within +/- 10°...
  • Page 35 MFL67705803 2018. 9. 17. 오오 12:58 Page 35 Refrigerant piping system • 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 36 MFL67705803 2018. 9. 17. 오오 12:58 Page 36 Refrigerant piping system 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 37: Y Branch Pipe And Header Branch Pipe Type

    MFL67705803 2018. 9. 17. 오오 12:58 Page 37 Y branch pipe and header branch pipe type Y branch pipe and header branch pipe type 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...
  • Page 38 MFL67705803 2018. 9. 17. 오오 12:58 Page 38 Y branch pipe and header branch pipe type Header [unit:mm] Models Gas pipe Liquid pipe ID12.7 ID6.35 ID6.35 4 branch ID12.7 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 ID15.88...

  • Page 39: Leakage Test And Vacuum

    MFL67705803 2018. 9. 17. 오오 12:58 Page 39 Leakage test and vacuum Leakage test and vacuum 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 40 MFL67705803 2018. 9. 17. 오오 12:58 Page 40 Leakage test and vacuum Vacuum Vacuum drying should be made from the service port provided on the outside 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 41: Electrical Wiring

    MFL67705803 2018. 9. 17. 오오 12:58 Page 41 Electrical Wiring Electrical Wiring Areas of 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 electric work using special circuits in accor- dance with regulations and this installation manual.
  • Page 42 MFL67705803 2018. 9. 17. 오오 12:58 Page 42 Electrical Wiring Outside Unit Outside Unit Master Slave1 Slave2 Master Slave1 Slave2 Indoor Indoor Indoor Indoor Unit Unit Unit Unit Remote Remote Remote Remote controller controller controller controller Outside Unit Outside Unit Master Slave1 Slave2 Master Slave1...
  • Page 43 MFL67705803 2018. 9. 17. 오오 12:58 Page 43 Electrical Wiring Transmission and Power Lines 1) Transmission cable • Types : Shielded Cable CVVS or CPEVS • Diameter : 1.0 ~ 1.5 mm • Insulation material : PVC • Maximum allowable temperature: 60°C •...
  • Page 44 MFL67705803 2018. 9. 17. 오오 12:58 Page 44 Electrical Wiring u Example for mistake of wiring • Do not separately connect the power of the indoor unit. 3phase 4lines power cable Transmission cable(3lines): wired remote controller Single phase 60Hz 220V Transmission cable(2lines Shield cable) : Indoor~ Outside unit Single phase 60Hz 220V 3 Phase 4 Wires...
  • Page 45 MFL67705803 2018. 9. 17. 오오 12:58 Page 45 Electrical Wiring 1. 60Hz u Example Connection of Power and Communication Cables n Single Outside Unit - 3Ø, 380-415 V 3 Phase 4 Wires Voltage range(V) Frequency Power supply Outdoor Indoor 50Hz 380-415 V [Outside Unit] 60Hz 460V...
  • Page 46 MFL67705803 2018. 9. 17. 오오 12:58 Page 46 Electrical Wiring n 3Ø, 380-415 V Voltage range(V) Frequency Outdoor Indoor 3 Phase 4 Wires Power supply 60Hz 460V 220V 50Hz 380-415 V [Master] [Slave1] [Slave2] (Main Switch) R S T R S T R S T Switch Switch...
  • Page 47 MFL67705803 2018. 9. 17. 오오 12:58 Page 47 Electrical Wiring u Example Connection of Communication Cable [BUS type] • Connection of communication cable must be installed like below figure between indoor unit to outside unit. [STAR type] • Abnormal operation can be caused by communication defect, when connection of communication cable is installed like below figure(STAR type).
  • Page 48 MFL67705803 2018. 9. 17. 오오 12:58 Page 48 Electrical Wiring Dip switch setting Setting the function Select the mode/function/option/value using ‘▶’, ‘◀’ Button and confirm that using the ‘●’ button after dip switch No.5 is turned on. CAUTION • It is only executed when all indoor units are off. DIP-SW01 7 - Segment SW04C ( : cancel) SW03C (...
  • Page 49 MFL67705803 2018. 9. 17. 오오 12:58 Page 49 Electrical Wiring Dip switch setting 1. Set the dip switch and turn on the power of the outside unit to check whether the set value is correctly en- tered in the 7 segment. 2.
  • Page 50 MFL67705803 2018. 9. 17. 오오 12:58 Page 50 Electrical Wiring Indoor unit auto addressing • The address of the indoor units would be set by auto addressing. 1) Wait for 3 minutes after applying power supply (master and slave outside unit, indoor unit) 2) Press the switch of the outside unit (SW02V) for 5 seconds.
  • Page 51 MFL67705803 2018. 9. 17. 오오 12:58 Page 51 Electrical Wiring u The Procedure of Automatic Addressing Turn OFF all DIP switches of the Power On master main board before automatic address setting. Waiting 3 minutes Press RED Button for 5 sec. (SW01C) Automatic addressing start 7-segment LED...
  • Page 52 MFL67705803 2018. 9. 17. 오오 12:58 Page 52 Electrical Wiring Outside unit Dry Contact installation and connection • Connect wires as below figure at the hole of backside of Outside Unit Dry Contact. • Insert the wire in the connection hole pushing the "Push" button. •...

  • Page 53: Test Run

    MFL67705803 2018. 9. 17. 오오 12:58 Page 53 Test Run Test Run Water supply system test run • Before executing the test run for the product, you must first test the heat source water system. The test run for the product must be executed after checking the flow rate and temperature of the heat source water supplied.
  • Page 54 MFL67705803 2018. 9. 17. 오오 12:58 Page 54 Test Run Precaution before test run Check whether the air is completely removed and the water supply is flowing smoothly. Check whether there is any refrigerant leakage of any disconnected or loose communication or power wire, or use the electric wiring diagram to check the wiring connection condition.
  • Page 55 MFL67705803 2018. 9. 17. 오오 12:58 Page 55 Test Run How to Cope with Abnormal Test Run Item Phenomenon Cause Checkpoint and resolution Check whether the water supply pump is operating. When connecting the flow switch, Check whether the water supply pipe is clogged. water doesn’t flow or the amount CH24 (Clean strainer, valve locked, valve issue, air trapped etc.)
  • Page 56 MFL67705803 2018. 9. 17. 오오 12:58 Page 56 Test Run Maintenance/Repair checklist Period (Year) Checkpoint ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Product operating condition ● ● ● Heat exchanger cleaning (Wash) ●...
  • Page 57 MFL67705803 2018. 9. 17. 오오 12:58 Page 57 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 outside unit control board as shown in the table.
  • Page 58 MFL67705803 2018. 9. 17. 오오 12:58 Page 58 Test Run Display Title Cause of Error Master outside unit inverter compressor CT sen- Master outside unit inverter compressor current detection (CT) sensor sor error disconnection or short circuit Master outside unit inverter compressor dis- Master outside unit inverter compressor discharge temperature sen- charge temperature sensor error sor disconnection or short circuit...

  • Page 59: Maintenance

    MFL67705803 2018. 9. 17. 오오 12:58 Page 59 Maintenance Maintenance Maintenance of Shell & coil heat exchager 1) Chemical Washing 5 % Phosphoric acid / Water / NaOH Drain pipe Circulation pump 1) Connect water piping in sizes 25A(34mm) to 32A(42.7mm) expansion pipe fitting. 2) Connect the SCHEX and circulation pump through the 32A(42.7mm) water piping.
  • Page 60 MFL67705803 2018. 9. 17. 오오 12:58 Page 60 Maintenance 2) Mechanical Washing 1) Using the Socket Wrench, divide the case and bolt fixed on the lower plate of SCHEX. 2) Spray the Water to the horizontal direction for washing of the entire coil. 3) Brush the coil to the rotating direction and with spraying water.

  • Page 61: Cooling Tower Applied Method

    MFL67705803 2018. 9. 17. 오오 12:58 Page 61 Cooling tower applied method Open type Closed type cooling tower cooling tower side side Heat exchange [Open type cooling tower + Middle heat exchanger] [Closed type cooling tower] Heat exchanger is installed between the cooling Heat source water of the cooling tower is supplied tower and outside unit system piping, and the tem- directly to the outside unit system.

  • Page 62: Caution For Refrigerant Leak

    MFL67705803 2018. 9. 17. 오오 12:58 Page 62 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 63 MFL67705803 2018. 9. 17. 오오 12:58 Page 63 Caution For Refrigerant Leak (3) With partition and without opening which serve as passage of air to adjoining room Outside 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...

  • Page 64: Water Solenoid Valve Control

    MFL67705803 2018. 9. 17. 오오 12:58 Page 64 Water Solenoid Valve Control Water Solenoid Valve Control Central Control(Use DDC Port) Water CN_18 CN_22 Water Main PCB (220 V Out) (to DDC) Solenoid PI 485 1(L) 2(N) 3(L) 4(N) Valve ※ BMS : Building Management System Individual Control(Use 220V Output Port) CN_18 CN_22...
  • Page 65 MFL67705803 2018. 9. 17. 오오 12:58 Page 800...

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