• 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 : ARWB Series http://www.lghvac.com www.lg.com P/NO : MFL68100306...
TIPS FOR SAVING ENERGY • Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death. Here are some tips that will help you minimize the power consumption Installation when you use the air conditioner.
TABLE OF CONTENTS CAUTION Installation TIPS FOR SAVING ENERGY • Always check for gas (refrigerant) leakage after installation or repair of product. - Low refrigerant levels may cause failure of product. IMPORTANT SAFETY INSTRUCTIONS • Do not install the product where the noise or hot air from the outside unit could damage the neighborhoods.
INSTALLATION PROCESS Power Supply : 3Ø, 460V, 60Hz Model Name : ARWB***DAS4 Indicate clearly who will be responsible for switch setting. Determination of division work Unit 1 Unit Make connection clearly between outside, indoor, Preparation of contract drawings System Capacity remote controller and option.
Power Supply : 3Ø, 208/230V, 60Hz Unit 2 Unit Model Name : ARWB***BAS4 System Capacity Combination Unit ARWN288DAS4 ARWN336DAS4 ARWN384DAS4 Unit 1 Unit Model ARWN168DAS4 ARWN168DAS4 ARWN192DAS4 Independent Unit ARWN121DAS4 ARWN168DAS4 ARWN192DAS4 System Capacity 3.0 + 5.8 3.0+3.0 3.0+3.0 Refrigerant Precharged Amount Combination Unit ARWB072BAS4 ARWB096BAS4...
ALTERNATIVE REFRIGERANT R410A Unit 2 Unit System Capacity The refrigerant R410A has the property of higher operating pressure in Combination Unit ARWB216BAS4 ARWB288BAS4 comparison with R22. Model ARWB144BAS4 ARWB144BAS4 Therefore, all materials have the characteristics of higher resisting Independent Unit ARWB072BAS4 ARWB144BAS4 pressure than R22 ones and this characteristic should be also consid-...
CAUTION 100(3-15/16) more • Do not install Multi V water outdoors. Always install indoor like (Serviceing space) machine room. • Inverter product may generate electric noise. Keep the body from computer, stereo etc. at enough distance. Specially leave space from indoor remote controller to shoes electric devices at 300(11-13/16) 450(17-23/32) the above 3m in weak electric wave area.
INSTALLATION SPACE WATER CONTROL Individual Installation Water control During the installation of the unit, consider service, inlet, and outlet • Keep the water temperature between 10~45°C(50~113°F). Other it acquire the minimum space as shown in the figures below. may cause the breakdown. - Standard water supply temperature is 30°C(86°F) for Cooling and : Service area 20°C(68°F) for heating.
INSTALLATION Closed type Effect Items Circulating water Supplemented water Corrosion Scale Basic Item • Install at places where it can endure the weight and vibration/noise pH(25C) 7.0~8.0 7.0~8.0 Conductivity[25C](mS/m) Below 30 Below 30 of the outside unit . Chlorine ion(mg CI - /l) Below 50 Below 50 •...
Ⓐ The corner part must be fixed firmly. Otherwise, the support for the Burrs removal installation may be bent. - Completely remove all burrs from the cut cross section of pipe/tube. - Put the end of the copper tube/pipe to downward direction as you re- Ⓑ...
Plumbing materials and storage methods Opening shutoff valve Pipe must be able to obtain the specified thickness and should be Remove the cap and turn the valve counter clockwise with the used with low impurities. wrench. Also when handling storage, pipe must be careful to prevent a frac- ture, deformity and wound.
① Pipe joint (auxiliary parts): Securely perform brazing with a nitrogen CAUTION blow into the service port.(Releasing pressure : 0.02 MPa(2.9psi) or less) 1 Always use the nitrogen.(not use oxygen, carbon dioxide, and a ② Cap: Remove caps and operate valve, etc. After operation, always Chevron gas): Please use the following nitrogen pressure reattach caps (tightening torque of valve cap: 25Nm (250kg-cm) or 0.02Mpa (2.9psi) Oxygen –...
Installation procedure for HR unit Type of HR Unit 1. Using an insert-hole-in- anchor, hang the hanging bolt. Select an HR unit according to the number of the indoor units to be in- stalled. HR units are classified into 3 types by the number of con- 2.
CAUTION Installation of Zoning Control Some indoor unit can be connected to one port of HR unit. Use the following materials for refrigerant piping. • Material: Seamless phosphorous deoxidized copper pipe • Wall thickness : Comply with the relevant local and national regu- lations for the designed pressure 3.8MPa(551.14psi).
14. Always use a non-oxidizing brazing material for brazing the parts Bending and do not use flux. If not, oxidized film can cause clogging or dam- Pipe thickness Shear stress Tensile stress Torque moment age to the compressor unit and flux can harm the copper piping or (N .
Flow switch work PIPE CONNECTIONS BETWEEN IN- DOOR AND OUTSIDE UNIT • It is recommended to install the flow switch to the water collection pipe system connecting to the outside unit. (Flow switch acts as the 1st protection device when the heat water Refrigerant piping system is not supplied.
Refrigerant pipe diameter from branch to branch (B,C,D) Refrigerant pipe diameter from outside unit to ﬁrst branch. (A) WARNING • Piping length from outside unit branch to outside unit ≤ Upward out- Pipe diameter when pipe side unit total Pipe diameter length is 90m over to 1st 10m(32.8ft), equivalent length : max 13m(42.7ft) (for capacity...
Pattern 7 Pattern 3 • * : Serial connection of HR units : Capacity sum of indoor units ≤ 192 kBtu/h Pattern 8 • The maximum total capacity of indoor units is 56.4kW(192 kBtu/h). Pattern 4 • * : Maximum indoor units per a branch are 8 indoor units Indoor Unit Y Branch pipe Head Branch pipe...
Pipes between outside unit Outside unit Connection s are 2m(6.6ft) or longer Oil Trap WARNING 0.2m(0.66ft) or more 2m(6.6ft) or less 2m(6.6ft) or longer • 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 16Ton[20HP(58kW)] outside unit .
- Apply Oil Trap as shown below when the length of the pipe between The amount of Refrigerant the outside unit s is more than 2m(6.6ft). Otherwise, the unit may not The calculation of the additional charge should take into account the operate properly.
Branch pipe Fitting WARNING • Regulation for refrigerant leakage Y branch : the amount of refrigerant leakage should satisfy the following equation for human safety. Ⓐ To Branch Piping or Indoor Unit Ⓑ To Outside Unit Total amount of refrigerant in the system 0.44(kg/m (0.028(lbs/ft Volume of the room at which Indoor Unit of...
• Header should be insulated with the insulator in each kit. Header [Unit:mm(inch)] Models Gas pipe Liquid pipe Insulate the header using the insulation material attached to the 360(14-5/32) 360(14-5/32) branch pipe kit 120(4-23/32) 120(4-23/32) ID12.7(1/2) as shown in the ﬁgure. ID6.35(1/4) 4 branch ID12.7(1/2)
WARNING NOTE Use a vacuum pump or Inert(nitrogen) gas when doing leakage Always add an appropriate amount of refrigerant. (For the refrigerant addi- test or air purge. Do not compress air or Oxygen and do not use tional charge) Flammable gases. Otherwise, it may cause fire or explosion. Too much or too little refrigerant will cause trouble.
Thermal insulation of refrigerant piping Penetrations Inner wall (concealed) Outer wall Outer wall (exposed) Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat-resistant poly- ethylene, so that no gap is observed in the joint between indoor unit and insulating material, and insulating materials themselves.
CAUTION Outside Unit • Use the 2-core shield cables for communication cables. Never use Indoor Indoor them together with power cables. Unit Unit • The conductive shielding layer of cable should be grounded to the metal part of both units. Remote Remote •...
Wiring of main power supply and equipment Noise Filter capacity - Use a separate power supply for the Outside Unit and Indoor Unit. - Bear in mind ambient conditions (ambient temperature,direct sun- Main PCB light, rain water,etc.) when proceeding with the wiring and connec- tions.
NOTE WARNING • Indoor Unit ground Lines are required for preventing electrical - Field Wiring diagram is to be used as a guidelineonly. Wiring should comply with applicable local and national codes shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to - ELCB must have function to prevent electrical short and over cur- pipe).
460V When the power source is supplied to Each outdoor unit individually. Example Connection of Communication Cable Power supply 3 Phase 3 Wires 1 Outdoor Unit-3Ø, 460V 60Hz 208/230V (Main Switch) [Master] [Slave1] [Slave2] R S T R S T R S T Power supply Switch...
When the power source is supplied to Each outdoor unit individually. 3 Outdoor Units-3Ø, 460V When the power source is connected In series between the units. Power supply Power supply 3 Phase 3 Wires 3 Phase 3 Wires 60Hz 460V 60Hz 460V (Main Switch) (Main Switch)
Between Indoor and Master Outdoor unit Main Power Connection Master SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 Outdoor Unit Main power terminal block Insulation sleeves 3(A) 4(B) 3(A) 4(B) 3(A) 4(B) 3(A) 4(B) attachments HR unit Fix ﬁrmly not...
HR UNIT PCB 3. Selection of the model of the HR unit #4 valve housing #1 valve housing (For 2 branches) (For 3 branches) (For 4 branches) #1 cooling valve PRHR021 PRHR031 PRHR041 LED(green) #1 heating valve Initial LED(red) 7-SEG Setting 1 branches SW05M...
Automatic Addressing Y branch pipe [Unit : mm(inch)] Low Pressure Gas Pipe Liquid pipe High Pressure Gas Pipe The address of indoor units would be set by Automatic Addressing Models I.D19.05(3/4) I.D22.2(7/8) I.D19.05(3/4) - Wait for 3 minutes after supplying power. I.D19.05(3/4) I.D22.2(7/8) I.D22.2(7/8)
The Procedure of Automatic Addressing WARNING 1. Execute auto addressing and auto pipe detection again when- Power On ever the indoor PCB and HR unit PCB is replaced. • Operation error occurs unless power is applied to the indoor Waiting 3 minutes and HR units.
Flow chart of manual addressing for pipe de- Example of manual valve addressing (Zoning tection setting) (In case that an indoor unit of central control address "11" is connected Execute in case of Auto pipe detection to a valve #1 of an HR unit) failure Wait for about 5 minutes.
Example of checking valve address Mode Function Option Value Action Remarks Content Display1 Content Display2 Content Display3 Content Display4 Implement Display5 (In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) Geothermal Change Save in...
Sol. Valve 220V output WARNING It is the function to select 220V output when you want solenoid valve • Valve address and central control address of its corresponding in- control. door unit should be set identical in manual addressing. How to set the mode Valve (04) Indoor unit (04) Valve (03)
Setting the outside unit address Use Sump Heater It is the function to select when you want to connect and use Sump How to set the mode Heater. Turn on DIP switch No.5 of the master unit PCB How to set the mode Use ‘▶‘...
TEST RUN WARNING • Always check whether the water supply is flowing smoothly Precaution before test run before the test run. (If sufficient amount of water is not flow- ing, it can burn the product.) • During the initial test run after installing the product, leaving Check whether the air is completely removed and the water sup- the product for more than 3 days or after replacing the com- ply is flowing smoothly.
Maintenance/Repair checklist 2) Be sure to check if the gate valve of inflow/outflow pipe and the valve for outflow pipe are properly closed when cleaning. 3) Connect the water pipe for cleaning with the chemical solvent Period (Year) through the service plug of the pipe and fill up the panel heat ex- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Checkpoint changer with 50°C~60°C(122°F~140°F) of cleaning solvent and...
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.
Display Title Cause of Error Master outside unit low pressure over-drop. Compressor turned off due to master outside unit low pressure overdrop. Master Outside Unit Low Compression Ratio Lim- Master Outside Unit stayed under low Compression limit for 3 ited minutes Master Outside unit Communication error between Master Outside unit inverter compressor current detection (CT) sen-...
Display Title Cause of Error Master outside unit Main Board - External Board Master outside unit Main Board - External Board communication communication Error Error Failure of operation mode conversion at Master Failure of operation mode conversion at Master Outside Unit Outside Unit Plate type heat exchanger freeze prevention Plate type heat exchanger freeze prevention error...
In case the concentration exceeds the limit When the concentration exceeds the limit, change original plan or take one of the countermeasures shown below: Closed type • Countermeasure 1 cooling tower Provide opening for ventilation. Provide 0.15% or more opening to floor space both above and below door, or provide opening without door.
1. Please call the installing contractor of your product, as warranty service will be pro- vided by them. 2. If you have service issues that have not been addressed by the contractor, please call 1-888-865-3026. CANADA Service call Number # : (888) LG Canada, (888) 542-2623...