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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 thor-
oughly.
TYPE :
P/NO : MFL62405704
www.lg.com
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Table of Contents
Related Manuals for LG Multi V Space ARUV Series
Summary of Contents for LG Multi V Space ARUV Series
- Page 1 • 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 thor- oughly. TYPE : P/NO : MFL62405704 www.lg.com...
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Page 2: Table Of Contents
ARUV Series Outdoor unit Installation Manual TABLE OF CONTENTS Safety Precautions......3 Installation Process ......7 Outdoor units Information....8 Environment-friendly Alternative Refrigerant R410A ......9 Select the Best Location ....9 Installation Space......10 Lifting method .........13 Installation ........14 Refrigerant piping installation ..19 Electrical Wiring ......35 Test Run ...........50 Caution For Refrigerant Leak..66 Installation guide at the seaside..68... -
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. WARNING This symbol indicates the possibility of death or serious injury. - Page 4 Safety Precautions When installing and moving the air condition- Do not reconstruct to change the settings of er to another site, do not charge it with a the protection devices. differnet refrigerant from the refrigerant specified on the unit. • If a differnet refrigerant or air is mixed with the •...
- 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 outdoor unit could damage the neighborhoods. • Low refrigerant levels may cause failure of •...
- Page 6 Safety Precautions Install and insulate the drain hose to ensure Do not operate with "System louver" closed. that water is drained away properly based on the installation manual. • A bad connection may cause water leakage. • It may cause failure of appliance or accident. Be very careful about product transportation.
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Page 7: Installation Process
Installation Process Installation Process Indicate clearly who is to be responsible for switch settings Determination of division work Make relationship between outdoor, 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 Sleeve and insert work Outdoor unit foundation work... -
Page 8: Outdoor Units Information
Outdoor units Information Outdoor units Information Ratio of the connectable Indoor Units to the Outdoor: Within 50 ~ 130% CAUTION Ratio of the running Indoor Units to the Outdoor: Within 10 ~ 100% *We can guarantee the operation only within 130% Combination. Power Supply: Outdoor Unit ( 1Ø... -
Page 9: 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 10: Installation Space
Installation Space Installation Space Indoor (Unit : mm) 1000 • Space for the " " display part of by type of system louver When installing manual louver: 150 When installing fixed louver: 100 (Basic space) • Please install the product so that the door of the outdoor unit room is completely opened for smooth installation and service. - Page 11 Installation Space Recommended Effective Opening Ratio(E.O.R) of Louver θ θ • ho = h x cosθ • Total Area(A) = H x W • Effective Area(Af) = ho x W x N • Opening Ratio(n) = Af/A Af = A x n E.O.R(%) = x 100 Ad + As...
- Page 12 Installation Space Outdoor • The following values are the least space for installation. If any service area si needed for service according to field circumstance, obtain enough service space. • The unit of values is mm. [Unit : mm] Category Installation Space Side Space A ≥...
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Page 13: 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 four points so that impact is not applied to the unit. •... -
Page 14: Installation
Installation Installation Location of anchor bolt n Installation foot (Location of anchor bolt) Outdoor Unit... - Page 15 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 16 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 17 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 18 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.
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Page 19: Refrigerant Piping Installation
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 Refrigerant piping installation Indoor/outdoor pipe connection • Pipe work can be done in front and the side in correspond with installation environment. • Make sure to spill over the 0.2 kg f/cm nitrogen into the pipe during welding. • If you don't spill over the nitrogen, it will obstruct the normal operation of valve and compressor due to great anodization in the pipe.
- Page 21 Refrigerant piping installation Ground piping withdrawal method - During front pipe withdrawal, operate piping work following the picture. Liquid pipe Gas pipe Removal of base plate pipe knock out Removal of base plate The side view of ground piping withdrawal Anti-vibration pad More than 50 mm Gas pipe...
- Page 22 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 23 Refrigerant piping installation 12. Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling per- formance, 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 24 Refrigerant piping installation Selection of Refrigerant Piping Outdoor unit Gas pipe Liquid pipe Branching pipe Main pipe Indoor unit Branching pipe Piping parts Name Selection of pipe size Size of main pipe Liquid pipe Gas pipe Outdoor unit Outdoor unit capacity type [mm(inch)] [mm(inch)] ↓...
- Page 25 Refrigerant piping installation Refrigerant piping system u Y branch method Example : 5 Indoor Units connected Ⓐ : Outdoor Unit Ⓑ : 1st branch (Y branch) Ⓒ : Indoor Units L100m l 30m h 5m Ú Total pipe length = A+B+C+D+a+b+c+d+e ≤ 150m(175m) Longest pipe length * Equivalent pipe length A+B+C+D+e ≤...
- Page 26 Refrigerant piping installation u Header Method Example : 6 Indoor Units connected Ⓐ : Outdoor Unit Ⓑ : 1st branch Ⓒ : Indoor Units Ⓓ : Sealed piping L 100m h 5m Branch pipe can not be used after header Ú...
- Page 27 Refrigerant piping installation u Combination of Y branch/header method Example : 5 Indoor Units connected Ⓐ : Outdoor Unit Ⓑ : 1st branch (Y branch) Ⓒ : Y branch Ⓓ : Indoor Unit Ⓔ : Header Ⓕ : Sealed piping L100m Branch pipe can not be used after header Ú...
- Page 28 Refrigerant piping installation 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. Amount refrigerant of Indoor units Total liquid pipe Additional charge(kg) Example) 4Way Ceiling Cassette 14.5kW -1ea :Ø25.4 mm Ceiling concealed Duct 7.3kW-2ea Wall Mounted 2.3kW-4ea...
- Page 29 Refrigerant piping installation Branch pipe 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° Viewed from point A in direction of arrow Within ±3°...
- Page 30 Refrigerant piping installation • 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 31 Refrigerant piping installation u Y branch pipe [unit:mm] Models Gas pipe Liquid pipe I.D12.7 I.D12.7 I.D6.35 I.D15.88 I.D15.88 I.D.6.35 I.D9.52 I.D9.52 I.D15.88 ARBLN01621 I.D.6.35 I.D12.7 I.D.9.52 I.D19.05 O.D9.52 O.D15.8 8 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 I.D12.7 ARBLN03321...
- Page 32 Refrigerant piping installation u Header [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 ID15.88 ID12.7 ID19.05 ID15.88 ID6.35...
- Page 33 Refrigerant piping installation Leak Test and Vacuum (1) Leak test Leak test should be made by pressurizing nitrogen gas to 2.94 MPa(30.0Kg/cm ). For the test method, refer to the following figure. (Make a test with the service valves closed. Be also sure to pressurize Liquid pipe, Gas pipe and High/Low Pressure Common pipe) The test result can be judged good if the pressure has not be reduced after leaving for about one day after com- pletion of nitrogen gas pressurization.
- Page 34 Refrigerant piping installation (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, 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.
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Page 35: 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. WARNING Be sure to have authorized electric engineers do electric work using special circuits in accordance with regulations and this installation manual. - Page 36 Electrical Wiring u Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. Power wire Round pressure terminal When none are available, follow the instructions below. • Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring may cause abnormal heat.) •...
- Page 37 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 main and sub outdoor unit through the ter- minal block. - Connect transmission lines between outdoor unit and indoor units through the terminal block.
- Page 38 Electrical Wiring Transmission and Power Lines 1) Transmission cable • Types : shielding wire • Diameter : 1.0~1.5mm • Maximum allowable temperature: 60°C • Maximum allowable line length: under 300m 2) Remote control cable • Types : 3-core cable 3) Central control cable Product type Wire type Diameter...
- Page 39 Electrical Wiring u 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 40 Electrical Wiring 1. 50Hz u Example Connection of Communication Cable n 1 Outdoor Unit-1Ø, 220-240V 1 Phase 2 Wires Power supply [Outdoor Unit] 50Hz 220-240V (Main Switch) Switch Fuse Power supply 1 Phase 50Hz 220-240V Power Line (4 Wires Cable) Power Line (2 Wires Cable) Communication Line...
- Page 41 Electrical Wiring u Example Connection of Communication Cable n 1 Outdoor Unit-3Ø, 380-415V 3 Phase 4 Wires Power supply [Outdoor Unit] 50Hz 380-415V (Main Switch) R S T N Switch Fuse Power supply 1 Phase 50Hz 220-240V Power Line (4 Wires Cable) Power Line (2 Wires Cable) Communication Line...
- Page 42 Electrical Wiring 2. 60Hz u Example Connection of Communication Cable n 1 Outdoor Unit-1Ø, 220V 1 Phase 2 Wires Power supply [Outdoor Unit] 60Hz 220V (Main Switch) Switch Fuse Power supply 1 Phase 60Hz 220V Power Line (4 Wires Cable) Power Line (2 Wires Cable) Communication Line...
- Page 43 Electrical Wiring u Example Connection of Communication Cable n 1 Outdoor Unit-3Ø, 380V 3 Phase 4 Wires Power supply [Outdoor Unit] 60Hz 380V (Main Switch) R S T N Switch Fuse Power supply 1 Phase 60Hz 220V Power Line (4 Wires Cable) Power Line (2 Wires Cable) Communication Line...
- Page 44 Electrical Wiring Distribution Method Line Distribution 3rd main pipe distribution Main pipe Distribution Main pipe Distribution Vertical Distribution Ensure that the branch pipes are attached vertically. The others Header Outdoor Unit...
- Page 45 Electrical Wiring 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 46 Electrical Wiring Automatic Addressing • The address of indoor units would be set by auto SW01B SW02B addressing (DIP S/W) (DIP S/W) 1) Wait for 3 minutes after applying power supply (main and sub outdoor unit, indoor unit). 7 - Segment 2) Press the switch of the outdoor unit (SW02V) for 5 SW02V Auto addressing...
- Page 47 Electrical Wiring u 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 Numbers of indoor unit connection set whose Waiting about 2~7 minutes addressing is completed are indicated for 30seconds on 7-segment LED after completing setting...
- Page 48 Electrical Wiring Group Number setting Group Number setting for Indoor Units ① Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off. ② The transmission lines connected to INTERNET terminal should be connected to central control of Outdoor unit with care for their polarity( A ’...
- Page 49 Electrical Wiring Location of Dip Switch 1. When outdoor unit is powered on after configuring the dip switch, proper input of configuration value can be verified Main PCB through 7 Segment. SW01B SW02B (DIP S/W) (DIP S/W) 2. This function is shown only for 2 seconds after turning on the power.
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Page 50: Test Run
Test Run Test Run Checks before Test Run 1. Test run should be performed after auto-addressing Automatic address configuration requires separate verification as it is a verification item related to installation quantity by the installer after installation. 2. Test run can be performed when 3 minutes passed after power on, by dip switches and but- tons. - Page 51 Test Run Sensor Checking Function Sensor inspection function is a function to judge whether its current temperature sensed by each sensors attached to out- door and indoor units(3 temperature sensors attached to indoor unit, 5 temperature sensors and 2 pressure sensors attached to outdoor unit) are appropriate.
- Page 52 Test Run Sensor Check Error Code Display Error display during sensor inspection process is composed of 3 stages as shown below, and is proceeded by repeating these stages n Step 1 : Display of error existence : 309 or 319 - 309 : Inspect sensors of outdoor unit - 319 : Inspect sensors of indoor unit n Step 2: Display of error location...
- Page 53 Test Run Refrigerant Auto Charging It is a function to charge appropriate amount of refrigerant in the system automatically through cycle operation. Automatic Charging of Refrigerant function can be used when refrigerant amount is inaccurate due to service or leakage in the pipe. Please use refrigerant charging only during service.
- Page 54 Test Run Gas pipe Liquid pipe manifold 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. Connect manifold and Capillary tube. Use designated capillary assembly only.
- Page 55 Test Run Refrigerant Checking It is a function to detect refrigerant amount of the system automatically through cycle operation. As a function to detect refrigerant leak and excess, it can be used together with Automatic Refrigerant Charging Function. Dip Switch Configuration Method Warning : Make sure to reset Main PCB Start Inspection before executing these functions...
- Page 56 Test Run CAUTION 1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range) IDU : 20~32°C ODU : 10~38°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 57 Test Run Inspection of Indoor EEV malfunction It is a function to detect disconnection of EEV of Indoor unit and disconnection between indoor and outdoor units by detect- ing temperature sensor of indoor unit through change in refrigerant amount inflow into the indoor unit due to fluctuations of indoor EEV during system operation.
- Page 58 Test Run Integrated Trial Run Function - Cooling Mode - It is a process to verify normal operation of the system and components attached to the system through system operation. - It executes overall process including refrigerant detection logic then executes a process of verifying normal operation of each component when executed in Cooling Mode.
- Page 59 Test Run Multi V Trial Run Result Report Print in the order shown below using LG MV in order to issue Multi V Trial Run Result Report. Multi V Trial Run Result Report Date Name Company Name & Address Telephone No.
- Page 60 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 Master ODU Dip S/W No.12+14 ON SW01B Master ODU Main PCB Power Reset...
- Page 61 Test Run 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 Vacuum mode cancellation method Main PCB ODU power reset Master main PCB DIP switch OFF( No.11,14) SW01S Main PCB Power reset...
- Page 62 Test Run ■ Noise reduction compared to Standard Cooling Mode operation [dB] Front Rear Mode (Outdoor side) (Indoor side) Quiet Operation CAUTION 1. For configuration of functions, ask the installation specialist during installation of outdoor unit. 2. When not using the function, turn off the dip switch then reset the power. 3.
- Page 63 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 64 Test Run Display Title Cause of Error Outdoor Unit Inverter Compressor Fault OR Drive Outdoor Unit Inverter Compressor Fault Over Current System is turned off by outdoor unit Inverter Outdoor Unit Inverter Compressor Compressor High Discharge Temperature High Discharge Temperature System is turned off by excessive increase of high High Pressure of Outdoor Unit pressure of outdoor unit...
- Page 65 Test Run Display Title Cause of Error Outdoor Unit Fan Start Failure Outdoor Unit Fan First Position Sensing Failure Error Communication Fail Between Outdoor Unit Main Outdoor Unit Main PCB EEPROM Error MICOM and EEPROM or omitting EEPROM Outdoor Unit Fan PCB EEPROM Communication Fail Between Outdoor Unit Fan Error MICOM and EEPROM or omitting EEPROM...
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Page 66: 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 enough to such an extent that the refrigerant gas will not exceed the limiting concentration even if the refrigerant gas leaks in the room. - Page 67 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 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 Capacity of smallest room where...
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Page 68: Installation Guide At The Seaside
Sea wind 2) Select a well-drained place. 1. If you canʼt meet above guide line in the seaside installation, please contact LG Electronics for the addi- tional anticorrosion treatment. 2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water.