ENGLISH ITALIANO ESPAÑOL FRANÇAIS INSTALLATION MANUAL DEUTSCH AIR CONDITIONER For more information, Refer to the CD or LG Web site (www.lg.com). www.lg.com P/NO : MFL67221416 LIMBA ROMÂNĂ [Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc.
ENGLISH 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: • Do not cool excessively indoors. This may be harmful for your health and may consume more electricity. • Block sunlight with blinds or curtains while you are operating the air conditioner. • Keep doors or windows closed tightly while you are operating the air conditioner.
Operation • Do not damage or use an unspecified power cord. - There is risk of fire, electric shock, explosion, or injury. • Use a dedicated outlet for this appliance. - There is risk of fire or electrical shock. • Be cautious that water could not enter the product. - There is risk of fire, electric shock, or product damage. • Do not touch the power switch with wet hands. - There is risk of fire, electric shock, explosion, or injury.
ENGLISH • Use power cables of sufficient current carrying capacity and rating. - Cables that are too small may leak, generate heat, and cause a fire. • Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system. - There is risk of damage or loss of property. • Keep the unit away from children. The heat exchanger is very sharp. - It can cause the injury, such as cutting the finger.
TABLE OF CONTENTS 2 2 6 6 6 6 8 TIPS FOR SAVING ENERGY IMPORTANT SAFETY INSTRUCTIONS INSTALLATION PROCESS OUTDOOR UNITS INFORMATION ALTERNATIVE REFRIGERANT R410A SELECT THE BEST LOCATION INSTALLATION SPACE 8 Individual Installation 8 9 LIFTING METHOD INSTALLATION 9 9 9 11 The location of the Anchor bolts Foundation for Installation Preparation of Piping Plumbing materials and storage methods 11 REFRIGERANT PIPING INSTALLATION 11 12 12 12 12 13 13 Precautions on Pipe connection / Valve operation
ENGLISH INSTALLATION PROCESS Determination of division work Preparation of contract drawings Sleeve and insert work Indicate clearly who will be responsible for switch setting. Make connection clearly between outdoor, indoor, remote controller and option. Take account of gradient of drain piping Outdoor unit foundation work ALTERNATIVE REFRIGERANT R410A The refrigerant R410A has the property of higher operating pressure in comparison with R22.
(Unit: mm) Description No. PRHR041/031 PRHR021 1 Low pressure Gas Ø28.58 Brazing conpipe connection port nection Ø22.2 Brazing connection 2 High pressure Gas Ø22.2 Brazing conpipe connection port nection Ø19.05 Brazing connection Liquid pipe connec3 tion port 481 Ø15.88 Brazing connection(PRHR041) Ø12.7 Brazing connection(PRHR031) Ø9.52 Brazing connection 4 Indoor unit Gas pipe Ø15.88 Brazing conconnection port nection Ø15.88 Brazing connection 5 Indoor unit Liquid Ø9.
Individual Installation During the installation of the unit, consider service, inlet, and outlet acquire the minimum space as shown in the figures below.
m 00m ast 1 At le For outdoor units should not be supported only by the corner supports. m m 00m 00m ast 1 least 1 e l Center of the Unit t A At m 00m ast 1 At le m 00m 00mm 1 ast 1 At le At least Center of the Unit The location of the Anchor bolts Unit : mm 200 200 100 75 75 • 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.
ENGLISH Burrs removal - 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 remove burrs in order to avoid to let burrs drop in the tubing. Opening shutoff valve 1 Remove the cap and turn the valve counter clockwise with the hexagon wrench. 2 Turn it until the shaft stops. Handle Do not apply excessive force to the shutoff valve. Doing so may break the valve body, as the valve is not a backseat type.
! CAUTION 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 Airtight Should be no moisture inside No dust inside.
ENGLISH Connection of Outdoor units Installation of Outdoor Unit, HR Unit, Indoor Unit Refrigerant Pipe 2, 3, 4 Outdoor Units Outdoor units Model Low Pressure Gas Pipe Liquid Pipe 331 314 416 408 I.D.28.58 2 Unit C C ARCNB21 I.D.15.88 I.D.28.58 111 I.D.22.2 I.D.31.8 I.D.34.9 I.D.41.3 I.D.38.1 O.D.34.9 334 281 I.D.15.88 I.D.12.7 I.D.9.52 I.D.19.05 83 I.D.22.2 I.D.19.05 I.D.19.05 83 I.D.22.2 O.D.19.05 I.D.12.7 I.D.28.58 I.D.15.88 I.D.15.88 I.D.12.
(Unit : mm) Liquid pipe Gas pipe 3 4 1 2 Low pressure gas pipe Models Liquid pipe High pressure Low pressure High pressure gas pipe Gas pipe Ø15.88 (5/8) Liquid pipe Ø9.52 (3/8) Brazing Type Remove caps on The brazing part. HR unit PRHR021 PRHR031 Indoor unit reducer PRHR041 – OD9.52(3/8) Ø6.35(1/4) OD15.88(5/8) OD19.05(3/4) Ø15.88(5/8) Ø12.7(1/2) PRHR021A Ø12.7(1/2) OD22.2(7/8) Ø19.05(3/4) Ø15.88(5/8) OD9.52(3/8) Ø6.35(1/4) Low pressure gas pipe Ø22.2 Ø28.58 Ø28.
ENGLISH Preparation Work - Use Knock Outs of Base Pan of the outdoor unit for Left/Right or Bottom pipe drawing outs. A B 9 The Multi V will stop due to an abnormality like excessive or insufficient refrigerant. At such a time, always properly charge the unit. When servicing, always check the notes concerning both the piping length and the amount of additional refrigerant. 10 Never perform a pump down. This will not only damage the compressor but also deteriorate the performance.
3 Length of pipe from each indoor unit to the HR Unit (a,b,c,d,e,f,g,i,j,k,l,m,n) ≤ 40 m 4 [Length of pipe from outdoor unit to the farthest indoor unit D12 (A+B+C+D+e)] - [Length of pipe outdoor unit to the closest indoor unit D1(C1+a)] ≤ 40 m Low Pressure Gas pipe Liquid pipe Refrigerant pipe diameter from branch to branch (B,C,D) ! WARNING High Pressure Gas pipe * : Serial connection of HR units : Capacity sum of indoor units · 192.
ENGLISH Refrigerant pipe diameter from outdoor unit to first branch. (A) Upward outdoor unit total capacity HP 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 Pipe diameter when pipe length is 90m over to 1st branch Pipe diameter Liquid mm(inch) Low pres- High pressure gas sure gas pipe pipe mm(inch) mm(inch) Liquid mm(inch) Low pres- High pressure gas sure gas pipe pipe mm(inch) mm(inch) 9.52(3/8) 19.05(3/4) 15.88(5/8) 22.2(7/8) 19.
Outdoor unit Connection * HR2 ! WARNING HR3 A HR1 1 2 48k 48k 3 4 5 6 48k 48k 48k 48k • * : Serial connection of HR units : Capacity sum of indoor units ≤ 192 kBtu/h Pattern 8 * HR2 A A HR1 B 1 2 48k 48k 3 4 5 6 7 8 12k 12k 12k 12k 24k 24k • * : Maximum indoor units per a branch are 8 indoor units Indoor Unit Head Branch pipe Y Branch pipe 1 B A Low pressure Gas pipe High pressure Gas pipe Liquid pipe Outdoor Unit Gas pipe HR1 Liquid pipe Indoor Unit • Pipe
(Example 1) - 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.
• Regulation for refrigerant leakage : the amount of refrigerant leakage should satisfy the following equation for human safety. Total amount of refrigerant in the system Oil Trap h ≤0.44 (kg / m3) 0.2m h Volume of the room at which Indoor Unit of the least capacity is installed Toward indoor unit Toward indoor unit 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.
ENGLISH Branch pipe Fitting • Header should be insulated with the insulator in each kit. Y branch B A Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure. Ⓐ To Branch Piping or Indoor Unit Ⓑ To Outdoor Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.
[unit:mm] Models Gas pipe Liquid pipe 360 360 120 120 ID12.7 ID12.7 ID6.35 ID6.35 ID15.88 150 120 ID15.88 ID9.52 ID9.52 ID15.88 ID19.05 ID15.88 ID19.05 ID9.52 ID12.7 ID9.52 120 120 ID12.7 ID15.88 ID6.35 ID15.88 120 ID9.52 150 ID15.88 400 ID9.52 360 160 120 ID15.88 ID12.7 ID6.35 ID19.05 120 ID15.88 ID6.35 ID9.52 150 120 ID9.52 ID22.2 ID28.58 ID25.4 ID9.52 ID12.7 120 160 ID15.88 ID6.35 ID6.35 ID12.7 ID19.05 ID15.88 120 ID28.58 ID25.4 150 ID9.52 ID9.
ENGLISH Thermal insulation of refrigerant piping ! WARNING Use a vacuum pump or Inert(nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion. - There is the risk of death, injury, fire or explosion.
Outdoor Unit Inner wall (concealed) Outer wall C A Outer wall (exposed) D E B A B Indoor Unit B Indoor Unit Remote control Remote control I Outdoor Unit Floor (fireproofing) Penetrating portion on fire limit and boundary wall D Roof pipe shaft Indoor Unit Indoor Unit I F J G Remote control D Remote control B G H B A 1m 2-Core Shield Cable 1m Ⓐ Sleeve Ⓑ Heat insulating material Ⓒ Lagging Ⓓ Caulking material Ⓔ Band Ⓕ Waterproofing layer Ⓖ Sleeve with edge Ⓗ Lagging mate
ENGLISH ! CAUTION ! WARNING • Use the 2-core shield cables for communication cables. Never use them together with power cables. • The conductive shielding layer of cable should be grounded to the metal part of both units. • Never use multi-core cable • As this unit is equipped with an inverter, to install a phase leading capacitor not only will deteriorate power factor improvement effect, but also may cause capacitor abnormal heating. Therefore, never install a phase leading capacitor.
NOTE • The figures are based on assumed length of parallel cabling up to 100m. For length in excess of 100m the figures will have to be recalculated in direct proportion to the additional length of cable involved. • If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased.
ENGLISH Field Wiring ! WARNING Single outdoor unit Outdoor Power supply (3Ø 4wires) Frequency 60Hz 50Hz [Outdoor Unit] (Main Switch) R S T N Voltage range(V) Outdoor Indoor 380V 220V 380-415V 220-240V When the total capacity is over than as follow, the power source do not use in series between the units. The First terminal block could be burnt out. (Heat Pump : 62 Hp) When the power source is supplied to Each outdoor unit individually.
e e 27 [BUS type] - Connection of communication cable must be installed like below figure between indoor unit to outdoor unit. Front Side 1 [STAR type] - Abnormal operation can be caused by communication defect, when connection of communication cable is installed like below figure(STAR type). Front Side 2 Main power terminal block Main power terminal block Ground wire Ground wire Power/ Ground cable Over 50mm (1.
ENGLISH HR Unit PCB 3 Selection of the model of the HR unit #4 valve housing 1 #1 valve housing 2 (For 2 branches) PRHR021 #1 cooling valve LED(green) #1 heating valve LED(red) 7-SEG SW05M (Switch for addressing HR unit) SW01M SW02M (Dip switch for setup of the function of HR unit) SW03M SW04M SW01M/SW03M/SW04M (Switch for manual valve addressing) 1 2 3 4 1 2 3 (For 3 branches) PRHR031 (For 4 branches) PRHR041 Initial Setting 1 branches Connected 2 branches Connected 3 branches Connecte
[Unit:mm] Models Gas Pipe Liquid pipe The address of indoor units would be set by Automatic Addressing I.D22.2 I.D19.05 I.D25.4 I.D15.88 I.D19.05 I.D12.7 I.D12.7 2 1 I.D9.52 I.D19.05 I.D15.88 ARBLB03321 I.D12.7 390 413 I.D22.2 O.D19.05 3 I.D28.58 O.D19.05 1 70 I.D6.35 I.D12.7 I.D6.35 I.D9.52 74 321 332 I.D22.2 O.D25.4 3 I.D9.52 83 I.D12.7 I.D25.4 2 80 Automatic Addressing 110 SW05M (Rotary S/W for addressing HR unit) Must be set to '0' when installing only one HR unit.
ENGLISH ! WARNING • Execute auto addressing and auto pipe detection again whenever the indoor PCB and HR unit PCB is replaced. - Operation error occurs unless power is applied to the indoor and HR units. • Error No.200 occurs if the number of connected indoor units and that of scanned indoor units are different. • When auto pipe detection fails, complete it with manual pipe detection (see Manual pipe detection).
Execute in case of Auto pipe detection failure Wait for about 5 minutes. Turn No.1 of SW02M of HR unit PCB on. The number of the indoor units installed is displayed. Ex)HR र The number of the indoor Reset the power of HR unit PCB. Enter the central control address into each indoor unit using its wired remote control.
(In case that an indoor unit of central control address "11" is connected to a valve #1 of an HR unit) 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. DIP-SW01 7 - Segment No. Display and setup SW01M - Operation: Turn dip S/W No.1 on. - Display: "11" is displayed in 7-SEG SW01M - Operation: Turn dip S/W No.1 on.
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.
ENGLISH Setting the ODU address ! CAUTION Mode setting method • Ask an authorized technician to setting a function. Master unit PCB DIP switch on : No.5 Select the mode using ‘▶’, ‘◀’ Button : “Func” Push the ‘●’ button Target pressure adjusting Mode setting method Select the Function using ‘▶’, ‘◀’ Button : “Fn5” Push the ‘●’ button Master unit PCB DIP switch on : No.
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. - If more than two troubles occur simultaneously, lower number of error code is first displayed. - After error occurrence, if error is released, error LED is also released simultaneously.
ENGLISH Outdoor unit related error Display Title Cause of Error 3 5 * Low Pressure of Master Outdoor Unit Low Pressure of Master Outdoor Unit 3 6 * Master Outdoor Unit Low Compression Ratio Limited Master Outdoor Unit Low Compression Ratio Limited 4 0 * Master Outdoor Unit Inverter Compressor CT Sensor Fault Master Outdoor Unit Inverter Compressor CT Sensor open or short 4 1 * Master Outdoor Unit Inverter Compressor1 Discharge Temperature Sensor Fault Master Outdoor Unit Inverter
HR Unit related error Communication Error Between Master Outdoor Unit and Other Outdoor Unit Master Outdoor Unit Fan PCB Communication Error Failing to receive Slave Unit signal at main PCB of Master Outdoor Unit Master Outdoor Unit FAN IPM Fault Error Instant Over Current at Master Outdoor Unit Fan IPM 1 0 4 * 1 0 5 * 1 0 6 * 1 0 7 * 1 1 3 * 1 1 4 * 1 1 5 * 1 1 6 * 1 4 5 * 1 5 1 * 1 5 3 * 1 5 4 * 1 8 2 * 1 8 7 * 1 9 3 * 1 9 4 * 2 0 0 1
ENGLISH - With partition and without opening which serve as passage of air to adjoining room Outdoor unit INSTALLATION GUIDE AT THE SEASIDE ! CAUTION Indoor unit Smallest room Calculate refrigerant concentration Total amount of replenishedrefrigerant in refrigerant facility (kg) = Refrigerant concentration(kg/m3) Capacity of smallest room whereindoor unit is installed (m3) • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
ENGLISH Model Designation Product information • Product Name : Air conditioner • Model Name : Product Sales Name Model Factory Name ARUx***LTy4 series x = N, B (Heat pump), V (Cooling only) y = S (Basic function), E (Additional function related to performance) *** = Numeric; (Cooling capacity) • Additional information : Serial number is refer to the bar code on the product. Airborne Noise Emission The A-weighted sound pressure emitted by this product is below 70 dB.
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