LG MULTI V Water II ARWN100LA2 Installation Manual

System outdoor unit r410a

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Outdoor Unit

INSTALLATION MANUAL

MODELS: ARWN100LA2

ARWN200LA2

website http://www.lgservice.com

System

R410A

IMPORTANT

• Please read this installation manual completely before

installing the product.

• Installation work must be performed in accordance with

the national wiring standards by authorized personnel

only.

• Please retain this installation manual for future reference

after reading it thoroughly.

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Summary of Contents for LG MULTI V Water II ARWN100LA2

Page 1 website http://www.lgservice.com System Outdoor Unit R410A INSTALLATION MANUAL MODELS: ARWN100LA2 ARWN200LA2 IMPORTANT • Please read this installation manual completely before installing the product. • Installation work must be performed in accordance with the national wiring standards by authorized personnel only. •...
Page 2: Table Of Contents
ARWN100LA2, ARWN200LA2 Outdoor unit Installation Manual TABLE OF CONTENTS Safety Precautions ........3 Select the Installation Location ....10 Installation Space........11 Water Control ..........12 Lifting Method..........14 Installation ..........15 Refrigerant Piping System ......23 Y Branch and Header Branch Pipe type...36 Leakage test and Vaccum......38 Electrical Wiring .........40 Test Run ............51 Site air conditioner/heater management...
Page 3: Safety Precautions
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. This symbol indicates the possibility of death or serious injury.
Page 4 Safety Precautions For re-installation of the installed product, Do not install, remove, or re-install the unit always contact a dealer or an Authorized by yourself (customer). Service Center. • There is risk of fire, electric shock, explosion, or • There is risk of fire, electric shock, explosion, or injury.
Page 5 Safety Precautions Securely install the cover of control box and If the air conditioner is installed in a small the panel. room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit when the refrigerant leaks. •...
Page 6 Safety Precautions When the product is soaked (flooded or Take care to ensure that nobody could step submerged), contact an Authorized Service on or fall onto the outdoor unit. Center. • There is risk of fire or electric shock. • This could result in personal injury and product damage.
Page 7 Safety Precautions Use power cables of sufficient current Do not use the product for special purposes, carrying capacity and rating. such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system. • Cables that are too small may leak, generate •...
Page 8 Safety Precautions I Operation Do not use the air conditioner in special Make the connections securely so that the environments. outside force of the cable may not be applied to the terminals. • Oil, steam, sulfuric smoke, etc. can significantly •...
Page 9 Safety Precautions Do not touch any of the refrigerant piping Do not operate the air conditioner with the during and after operation. panels or guards removed. • It can cause a burn or frostbite. • Rotating, hot, or high-voltage parts can cause injuries.
Page 10: Select The Installation Location
Select Installation Location Select Installation Location Precaution when selecting the installation location • Select space for installation outdoor unit, which will meet the following conditions. • With strength which bears weight of unit • With space for air passage and service work Don't install the unit at the space where generation, inflow, stagnation, and leak of combustible gas is expected.
Page 11: Installation Space
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 (Outdoor unit) Water pipe...
Page 12: Water Control
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 air conditioning and 20°C for heating. • Properly control the water velocity. Otherwise it may cause the noise, pipe vibration or pipe contraction, expansion according to the temperature.
Page 13 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 14: Lifting Method
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 15: Installation
Installation Installation Location of anchor bolt (Unit: mm) The location of anchor bolt • 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 16: Flaring Work
Installation Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. 1. Cut the pipes and the cable. I Use the accessory piping kit or the pipes purchased Copper Slanted Uneven Rough tube...
Page 17 Installation 5. Pipe connection 1. Follow the pipe path. Bend the pipe more than 3 times in 1 location and do not bend in the opposite direction. (This will strengthen the pipe.) 2. After deforming the pipe, align the union fitting and center of the pipe, and tighten it with the wrench. 3.
Page 18: Heat Insulation
1) Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (Over 120°C) 2) When installing in a humid environment, use thicker Refrigerant piping heat insulation material. Indoor unit * Consult with LG on detailed technical specification. Thermal insulator (accessory) Outdoor Unit...
Page 19 Installation 7. Standard refrigerant pipe EPDM heat insulation material thickness Air conditioned location Non-air conditioned location Classification Note1) General location Note1) Special location Note3) General location Note4) Negative condition Ø6.35 Above t9 Above t9 Above t9 Above t9 Liquid Ø9.52 pipe Above t13 Above t13...
Page 20: Outdoor Units
Installation 8. Connection of high/low pressure common pipe 1) For the high/low pressure common pipe, connect both master outdoor unit and slave outdoor units to the pipe by using elbows. 2) For cutting the pipe, connect the high/low pressure com- Slave mon pipe after removing burrs, dusts and foreign materi- Outdoor Unit...
Page 21 Installation 10. 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 22 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 1120 15.5 31.8 1 1/4 14.5 1450 87.5 8.75 26.5...
Page 23: Refrigerant Piping System
Refrigerant piping system 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) 2 Outdoor Units Slave Master...
Page 24 Refrigerant piping system ➲ Refrigerant pipe diameter from branch to branch (B,C,D) Liquid pipe Gas pipe Downward Indoor Unit total capacity [mm(inch)] [mm(inch)] [kW(Btu/h)] ≤5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) <16(54,600) Ø9.52(3/8) Ø15.88(5/8) <22.4(76,400) Ø9.52(3/8) Ø19.05(3/4) < 33(112,600) Ø9.52(3/8) Ø22.2(7/8) < 47(160,400) Ø12.7(1/2) Ø28.58(1 <...
Page 25 Refrigerant piping system Header branch method 1 Outdoor Unit Example : 6 Indoor Units connected : Outdoor Unit : 1st branch : Indoor Units : Sealed piping L 150m 2 Outdoor Units Slave Example : 6 Indoor Units connected Master : Outdoor Unit : Header branch 10m or...
Page 26 Refrigerant piping system Combination of Y branch/header method Example : 5 Indoor Units connected : Outdoor Unit : 1st branch (Y branch) : Y branch : Indoor Unit : Header L 150m : Sealed piping Branch pipe can not be used after header Example : 5 Indoor Units connected Slave : Outdoor Unit...
Page 27 Refrigerant piping system ➲ Refrigerant pipe diameter from branch to branch (B,C) Liquid pipe Gas pipe Downward Indoor Unit total capacity [mm(inch)] [mm(inch)] [kW(Btu/h)] ≤5.6(19,100) Ø6.35(1/4) Ø12.7(1/2) <16(54,600) Ø9.52(3/8) Ø15.88(5/8) <22.4(76,400) Ø9.52(3/8) Ø19.05(3/4) < 33(112,600) Ø9.52(3/8) Ø22.2(7/8) < 47(160,400) Ø12.7(1/2) Ø28.58(1 <...
Page 28 Refrigerant piping system Outdoor unit Connection ➲ Refrigerant pipe diameter before 1st branch (A,E,F) Upward Outdoor Unit total capacity Liquid pipe Gas pipe [mm(inch)] [mm(inch)] [HP] Ø9.52(3/8) Ø15.88(5/8) 6, 8 Ø9.52(3/8) Ø19.05(3/4) Ø9.52(3/8) Ø22.2(7/8) 12~16 Ø12.7(1/2) Ø28.58(1 18~22 Ø15.88(5/8) Ø28.58(1 Ø15.88(5/8) Ø34.9(1 26~34...
Page 29 Refrigerant piping system Oil trap application method between outdoor units • Because of the possibility of oil being accumulated in the outdoor unit that has stopped, when there is a height difference between outdoor unit pipes or if the pipe distance between the outdoor units is over 2m, you must always apply an oil trap. (But, the oil trap between outdoor units is limited to 1 time and is only applied to the gas pipe.) •...
Page 30 Refrigerant piping system Indoor unit connection Ex) 5 indoor units connected : Outdoor unit Y branch Y branch : Indoor unit : Header branch : Seal L Below 150 m Below 40 m ➔ Refrigerant pipe diameter from branch to indoor unit (a, b, c, d, e) Outdoor unit capacity (kW) Liquid pipe (mm) Gas pipe (mm)
Page 31 Refrigerant piping system Calculation of amount of refrigerant The calculation of the additional charge should take account of the diameter and length of the pipe. Additional refrigerant Total length of liquid pipe (m) x 0.354(kg/m) charge (kg) :Ø22.2 mm Total length of liquid pipe (m) x 0.266(kg/m) :Ø19.05 mm Total length of liquid pipe (m)
Page 32 Refrigerant piping system Refrigerant pipe fitting 1. 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 33 Refrigerant piping system 2. Y Branch and Header Fitting Y branch To Outdoor Unit To Branch Piping or Indoor Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.) Horizontal Facing Facing plane downwards upwards Within +/- 10°...
Page 34 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. Piched pipe •...
Page 35 Refrigerant piping system 3. 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 36: Y Branch And Header Branch Pipe Type
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 ARBLN01620 ARBLN03320 ARBLN07120 ARBLN14520 Outdoor Unit...
Page 37 Y branch pipe and header branch pipe type Header [unit:mm] Models Gas pipe Liquid pipe Ø12.7 Ø12.7 Ø6.35 Ø6.35 Ø15.88 4 branch Ø15.88 Ø9.52 Ø9.52 Ø12.7 Ø19.05 ARBL054 OD19.05 Ø15.88 Ø12.7 OD12.7 Ø9.52 Ø12.7 Ø15.88 Ø12.7 Ø9.52 Ø6.35 Ø9.52 Ø6.35 Ø15.88 7 branch Ø12.7...
Page 38: Leakage Test And Vaccum
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 39 Leakage test and vacuum Vacuum Vacuum drying should be made from the service port provided on the outdoor unit’s service valve to the vacu- um 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 40: Electrical Wiring
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. Be sure to have authorized Electrical engineers do electric work using special circuits in accordance with regulations and this installation manual.
Page 41 Electrical Wiring Control Box and Wiring Location - Unscrew all the screw, pull out the panel. - Connect the transmission wire between outdoor unit and indoor unit, the connection between outdoor unit and central controller system pass through the sub PCB for central control. - When connecting indoor unit with the shield cable, ground at the grounding screw.
Page 42 Electrical Wiring Transmission and Power Lines 1. Transmission cable • Types : shielding wire CVVS or CPEVS • Diameter : over 1.25mm • Insulation material : PVC • Maximum allowable temperature: 60°C • Maximum allowable line length: under 300m 2. Remote control cable •...
Page 43 Electrical Wiring N 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~ Outdoor unit Single phase 60Hz 220V 3 phase 4 wires power supply...
Page 44 Electrical Wiring Dip switch setting 1. Location of setting switch SW01B SW02B 7 segment SW01B SW02B 1 2 3 4 1 2 3 4 If the applicable dip switch is not set correctly, the product may not operate properly. 2. Dip switch setting 1) Set the dip switch and turn on the power of the outdoor unit to check whether the set value is correctly entered in the 7 segment.
Page 45 Electrical Wiring I Master indoor Setting SW01B Setting SW02B Setting Remark Normal mode at shipping factory 1 2 3 4 1 2 3 4 I Slave outdoor Setting (1 unit: master outdoor) SW01B Setting SW02B Setting Remark Normal mode at shipping factory 1 2 3 4 1 2 3 4...
Page 46 Electrical Wiring Function SW01B Setting SW02B Setting Remark Standard mode at ship- longest Pipe ping factory Length 1 2 3 4 1 2 3 4 Test mode (Cooling) 1 2 3 4 1 2 3 4 Test mode (Heating) 1 2 3 4 1 2 3 4 After the system turn on, Water temp...
Page 47 Electrical Wiring Function SW01B Setting SW02B Setting Remark Vacuum Mode 1 2 3 4 1 2 3 4 Water Pipe For water pipe Solenoid Solenoid Valve Valve 220V power 220V Functions 1 2 3 4 1 2 3 4 I After operating the dip switch to set the additional function, you must reset the power of the main PCB to reflect the changed function.
Page 48 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 outdoor unit, indoor unit) 2) Press the switch of the outdoor unit (SW02V) for 5 seconds. 3) A "88"...
Page 49 Electrical Wiring N The Procedure of Automatic Addressing Power On Waiting 3 minutes Press SW02V for 5 sec. Auto addressing start 7-segment LED = 88 Don't Press SW02V • Auto addressing setting end Waiting about 2~7 minutes Numbers of indoor unit connection set whose addressing is completed are indicated for 30seconds on 7-segment LED after completing setting Check the connections...
Page 50 Electrical Wiring Group Number Setting of Indoor Units • Using the wired remote controller 1) Press Program button and Set/Clr button at the same time for 3 seconds. 2) The current group and the indoor unit numbers are indicated on the "88" of the wired remote control. 3) Set numbers by using the temperature adjust key.
Page 51: Test Run
Test Run Test Run Water supply system test run • Before executing the test run for the product, you must first test the cooling water system. The test run for the product must be executed after checking the flux and temperature of the cooling water supplied.
Page 52 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. Check whether the power and communication wire are connected.
Page 53 Test Run How to Cope with Abnormal Test Run The phenomena from main component failure Item Phenomenon Cause Check and troubleshooting method Check whether the water supply pump is Water is not supplied or operating. flux is low (During air CH32 Check whether the water supply pipe is conditioning operation)
Page 54: Error Indicator
Test Run Self-Diagnosis Function Error Indicator • This function indicates type 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 55 Test Run Display Error item Root cause of error number Slave outdoor unit inverter DC link over-voltage Compressor turned Off due to slave outdoor unit inverter DC voltage 2 8 2 error over-charge Master outdoor unit inverter compressor over-cur- Master outdoor unit inverter compressor error or operating component 2 9 1 rent (IPM) error operation...
Page 56 Test Run Display Error item Root cause of error number 0 1 Master outdoor unit 3 phase power missing Master outdoor unit power line phase missing 0 2 Slave outdoor unit 3 phase power missing Slave outdoor unit power line phase missing Over-capacity Excessive connection of indoor unit connection display value (Different (Indoor unit capacity sum is excessive) connection...
Page 57: Site Air Conditioner/Heater Management Sheet
Site air conditioner/heater management sheet Site air conditioner/heater management sheet Branch pipe Fitting Outdoor unit Outdoor unit No. model Additional refrigerant Location Zone (R410A) SVC Call Combination percentage Model : Model : Model : Model : Name : Name : Name : Name : Remote controller:...
Page 58: Water Cooling Type Cooling Tower Applied Method
Water cooling type cooling tower applied method Water cooling type 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 tower Cooling water of the cooling tower is supplied directly and outdoor unit system piping, and the temperature to the outdoor unit system.
Page 59: 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 60 Caution For Refrigerant Leak 3) With partition and without opening which serve as passage of air to adjoining room Outdoor unit Indoor unit Smallest room I Calculate refrigerant concentration Total amount of replenished In case the result of calculation exceeds refrigerant in refrigerant facility (kg) Refrigerant concentration the limiting concentration, perform the...
Page 61 P/No.: MFL30215310 Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.

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