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PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT

ENGLISH

Pipe Connection Method between outdoor unit/indoor unit

See Table 2

A : Refrigerant pipe diameter from outdoor unit to first branch
E : Refrigerant pipe diameter for outdoor unit capacity (Slave 1+ Slave 2+ Slave 3)
F : Refrigerant pipe diameter for outdoor unit capacity (Slave 2+ Slave 3)
G : Refrigerant pipe diameter for outdoor unit capacity(Slave 3)

* : See Table 4

L1

L2

L3

H1

E

G

F

Slave3

Slave2

Slave1

Master

l

40 m

h 30 m

Indoor

Unit

1st branch

Refrigerant pipe diameter from outdoor unit to first branch

Level Difference (Outdoor unit

Outdoor unit)

5 m

Max length from first branch to each outdoor

unit (L1, L2, L3)

Less than 10 m

(equivalent length of piping 13 m)

Y branch

Method

Combination of Y

branch/header

Method

Header

Method

Max pipe

length

Outdoor Unit

Indoor Unit

Longest pipe

length(L)

A+B+C+D+e

≤

165 m

A+B+b

≤

165 m

A+C+e

≤

165 m

A+f

≤

165 m

Equivalent pipe

length

190 m

190 m

190 m

Total pipe

length

1,000 m

1,000 m

1,000 m

Max

difference

in height

Outdoor Unit

Indoor Unit

Difference in

height(H)

90 m

90 m

90 m

Indoor Unit

Indoor Unit

Difference in

height(h)

30 m

30 m

30 m

Longest pipe

length after

1st branch

Pipe length(l)

40 m

(90 m: Conditional

application)*

40 m

(90 m: Conditional

application)*

40 m

(Table 1) Limit Pipe length

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Содержание MULTI V JRUN120LTE5

Страница 1: ...ling 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 Copyright 2014 2019 LG Electronics Inc All Rights Reserved ENGLISH MFL67163410 Rev00 032020 ...

Страница 2: ... air conditioner is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number R...

Страница 3: ... shock For re installation of the installed product always contact a dealer or an Authorized Service Center There is risk of fire electric shock explosion or injury Do not install remove or re install the unit by yourself customer There is risk of fire electric shock explosion or injury Do not store or use flammable gas or combustibles near the air conditioner There is risk of fire or failure of p...

Страница 4: ...asures must be taken to prevent the refrigerant concentration from exceeding the safety limit when the refrigerant leaks Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded Should the refrigerant leak and cause the safety limit to be exceeded hazards due to lack of oxygen in the room could result Operation Do not damage or use an unspecified power ...

Страница 5: ...ir conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcasting Do not install the product where it is exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Operation Do not use the air conditioner in special e...

Страница 6: ...ing and after operation It can cause a burn or frostbite Do not operate the air conditioner with the panels or guards removed Rotating hot or high voltage parts can cause injuries Do not directly turn off the main power switch after stopping operation Wait at least 5 minutes before turning off the main power switch Otherwise it may result in water leakage or other problems Auto addressing should b...

Страница 7: ...g 42 Distribution Method 43 Branch pipe Fitting 47 Leak Test and Vacuum drying 49 Vacuum Mode 50 Heat insulation of refrigerant piping 51 ELECTRICAL WIRING 51 CAUTION 53 Control box and connecting position of wiring 54 Communication and Power Cables 55 Wiring of main power supply and equipment capacity 56 Field Wiring 63 Checking the setting of outdoor units 64 Group Number setting 65 Automatic Ad...

Страница 8: ...r switch setting Determination of division work The vacuum pump used must have a capacity of reaching at least 5 torr more than 1 hour Vacuum drying Recharge correctly as calculated in this manual and record the amount of added refrigerant Additional charge of refrigerant Make sure there are no gaps left between the facing materials used on the ceiling Fit facing panels Run each indoor unit in tur...

Страница 9: ...ination Ratio 50 200 Number of Outdoor units Combination Ratio Standard Model Space Saving Model Single Unit 200 160 Two Units Combination 160 120 Three or More Units Combination 130 120 Unit System HP Model Combination Unit Independent Unit Refrigerant Precharged Amount kg lbs Number of maximum connectable indoor units Net Weight kg lbs Dimensions WxHxD mm inch 36 7 32 66 5 32 29 29 32 1 36 7 32 ...

Страница 10: ...6 5 32 29 29 32 Piping Connections mm inch Ø 15 88 5 8 Ø 15 88 5 8 Ø 19 05 3 4 Ø 19 05 3 4 mm inch Ø 28 58 1 1 8 Ø 34 9 1 3 8 Ø 34 9 1 3 8 Ø 34 9 1 3 8 Unit 2 Outdoor Units System HP 30 32 34 36 Model Combination Unit Independent Unit Refrigerant Precharged Amount kg 6 0 1 5 0 1 7 6 1 5 0 1 7 6 1 6 6 1 7 6 1 6 0 1 lbs 13 2 1 11 0 1 16 8 1 11 0 1 16 8 1 14 6 1 16 8 1 13 2 1 Number of maximum connec...

Страница 11: ... 920 1 680 760 1 inch 48 13 16 66 5 32 29 29 32 x 2 36 7 32 66 5 32 29 29 32 1 48 13 16 66 5 32 29 29 32 x 2 36 7 32 66 5 32 29 29 32 1 48 13 16 66 5 32 29 29 32 x 2 36 7 32 66 5 32 29 29 32 1 48 13 16 66 5 32 29 29 32 x 2 36 7 32 66 5 32 29 29 32 1 Piping Connections mm inch Ø 19 05 3 4 Ø 19 05 3 4 Ø 19 05 3 4 Ø 19 05 3 4 mm inch Ø 41 3 1 5 8 Ø 41 3 1 5 8 Ø 41 3 1 5 8 Ø 41 3 1 5 8 Unit 3 Outdoor ...

Страница 12: ...2 2 452 1 386 1 562 2 540 1 386 1 562 2 540 1 452 1 562 2 540 2 Dimensions WxHxD mm 1 240 1 680 760 3 920 1 680 760 1 1 240 1 680 760 3 920 1 680 760 1 1 240 1 680 760 4 1 240 1 680 760 4 inch 48 13 16 66 5 32 29 29 32 x3 36 7 32 66 5 32 29 29 32 1 48 13 16 66 5 32 29 29 32 x3 36 7 32 66 5 32 29 29 32 1 48 13 16 66 5 32 29 29 32 x 4 48 13 16 66 5 32 29 29 32 x 4 Piping Connections mm inch Ø 22 2 7...

Страница 13: ... Connections mm inch Ø 15 88 5 8 Ø 19 05 3 4 Ø 19 05 3 4 mm inch Ø 28 58 1 1 8 Ø 41 3 1 5 8 Ø 41 3 1 5 8 Unit 4 Outdoor Units System HP 82 84 86 88 Model Combination Unit Independent Unit Refrigerant Precharged Amount kg 7 6 x 4 7 6 x 4 7 6 x 4 7 6 x 4 lbs 16 8 x 4 16 8 x 4 16 8 x 4 16 8 x 4 Number of maximum connectable indoor units 64 64 64 64 Net Weight kg 255 4 255 4 255 4 255 4 lbs 562 4 562 ...

Страница 14: ...o prevent them from softening Be careful not to install wrongly to minimize economic loss because it is expensive in comparison with R22 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 characteristic should be also considered during the installation R410A ...

Страница 15: ...solution and spray sulfur are often used Do not use unit under any special environment where oil steam and sulfuric gas exist It is recommended to fence round the outdoor unit in order to prevent any person or animal from accessing the outdoor unit If installation site is area of heavy snowfall then the following directions should be observed Make the foundation as high as possible Fit a snow prot...

Страница 16: ...The height of the wall on the front side must be 1500mm or less The height of the wall on the inlet side must be 500mm or less There is no limit to the wall on the side If the height of the walls on the front and the side are higher than the limit there must be additional space on the front and the side Additional Space on the front side by 1 2 of h1 Additional Space on the inlet side by 1 2 of h2...

Страница 17: ...ge snowfall if it is installed at the area with much snowfall Where snow accumulated on the upper part of the Outdoor Unit by more than 10 cm always remove snow for operation The height of H frame must be more than 2 times the snowfall and its width shall not exceed the width of the product If width of the frame is wider than that of the product snow may accumulate Don t install the suction hole a...

Страница 18: ...ur points Carrying in and lifting with 3 point support may make Outdoor Unit unstable resulting in a fall Use 2 belts of at least 8 m long Place extra cloth or boards in the locations where the casing comes in contact with the sling to prevent damage Hoist the unit making sure it is being lifted at its center of gravity When carrying the suspended unit pass the ropes under the unit and use the two...

Страница 19: ...ng fixed The outdoor unit supports should have minimum height of 200 mm Anchor bolts must be inserted at least 75 mm At least 100mm At least 100mm At least 100mm At least 100mm At least 100mm At least 100mm Center of the Unit For outdoor units should not be supported only by the corner supports Center of the Unit 730 760 65 65 Unit mm At least 65 At least 65 Chassis Outdoor Unit Capacity A mm B mm...

Страница 20: ... the bolt It may cause the unstable state of the outdoor settlement and may cause freezing of the heat exchanger resulting in abnormal operations Be sure to remove the Pallet Wood Support of the bottom side of the outdoor unit before welding Not removing Pallet Wood Support causes hazard of fire during welding WARNING Install where it can sufficiently support the weight of the outdoor unit If the ...

Страница 21: ...he tubing Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper tube in a bar or die as indicated dimension in the table above Check Compare the flared work with figure below If flare is noted to be defective cut off the flared section and do flaring work again Copper tube 90 Slanted Uneven Rough Pipe Reamer Point down Inclined Inside is shining without scratches...

Страница 22: ...ps Do not apply excessive force to the shutoff valve Doing so may break the valve body as the valve is not a backseat type Always use the special tool 3 Make sure to tighten the cap securely Pipe size Tightening torque N cm A mm Flare shape Ø 9 52 38 4 12 8 13 2 90 2 45 2 A R 0 4 0 8 Ø 12 7 55 6 16 2 16 6 Ø 15 88 75 7 19 3 19 7 CAUTION Always use a charge hose for service port connection After tig...

Страница 23: ...hylene over 120 C the heat resistance temperature Add the insulation over 10 mm thickness at high humidity environment Indoor unit Thermal insulator accessory Fastening band accessory Refrigerant piping Closing shutoff valve 1 Remove the cap and turn the valve clockwise with the hexagon wrench 2 Securely tighten the valve until the shaft contacts the main body seal 3 Make sure to tighten the cap s...

Страница 24: ...t cold and warm Clogging of EEV Capillary Gas shortages Degradation of refrigerant oil Poor insulation of the compressor Do not cold and warm Counter measure No moisture in the pipe Until the connection is completed the plumbing pipe entrance should be strictly controlled Stop plumbing at rainy day Pipe entrance should be taken side or bottom When removal burr after cutting pipe pipe entrance shou...

Страница 25: ...degradation of refrigerant oil Because it is flammable it is strictly prohibited to use Carbon dioxide Degrade the drying characteristics of gas Chevron Gas Toxic gas occurs when exposed to direct flame 2 Always use a pressure reducing valve 3 Please do not use commercially available antioxidant The residual material seems to be the oxide scale is observed In fact due to the organic acids generate...

Страница 26: ...or unit is divided at the end to connect to each indoor unit Flare connection for the indoor unit and welding connection for the outdoor pipe and the branching parts Use hexagonal wrench to open close the valve Gas pipe Liquid pipe Refrigerant Charging Port Service Port WARNING Always careful not to leak the refrigerant during welding The refrigerant generates poisonous gas harmful to human body i...

Страница 27: ...de Pipe Draw Out Front Pipe Draw Out Right Side Pipe Draw Out Refrigerant Pipe Regulator Nitrogen Taping Valve Nitrogen Direction Nitrogen Direction Preparation Work Use Knock Outs of Base Pan of the outdoor unit for Left Right or Bottom pipe drawing outs Removal Area for Liquid Gas pipe bottom side connections CAUTION Do not give damage to the pipe base during the Knock Out work Proceed to pipe w...

Страница 28: ...ng refrigerant or air inside using the service port Remove the leakage prevention cap Gas pipe Liquid pipe Service Port Refrigerant Charging Port Leakage Prevention Cap Pipe Drawing Out during Single Series connection Method of drawing out pipes on the front Proceed with the pipe work as shown in the below figure for front side pipe drawing out Pipe Knock Out for Liquid Gas pipes 28 PIPE CONNECTIO...

Страница 29: ...PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 29 Method of drawing out pipes on the bottom side Drawing out common pipe through side panel Liquid pipe Gas pipe Remove only liquid gas pipe Knock out ...

Страница 30: ...application h 30 m H 90 m L165 m Refrigerant piping system 1 Outdoor Unit Combination of Y branch header Method Ⓐ Outdoor Unit Ⓑ 1st branch Y branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Header Ⓕ Sealed piping L 165 m 40 m 90 m Conditional application H 90 m 30 m Header Method Ⓐ Outdoor Unit Ⓑ Header branch Ⓒ Indoor Units Ⓓ Sealed piping L 165 m 40 m H 90 m 30 m ...

Страница 31: ... Connection branch pipe between Outdoor units ARCNN21 Ⓗ Header Ⓘ Sealing 10 m or less H 90 m G F E G F E L 165 m l 40 m 90 m Conditional application ODU Capacity Master Slave1 Slave2 Slave3 30 m Master Slave3 Slave1 Slave2 h1 Header Method Ⓐ Outdoor Unit Ⓑ Header branch Ⓒ Indoor Units Ⓓ Sealing Ⓔ Connection branch pipe between Outdoor units ARCNN41 Ⓕ Connection branch pipe between Outdoor units AR...

Страница 32: ...nit to first branch Level Difference Outdoor unit Outdoor unit 5 m Max length from first branch to each outdoor unit L1 L2 L3 Less than 10 m equivalent length of piping 13 m Y branch Method Combination of Y branch header Method Header Method Max pipe length Outdoor Unit Indoor Unit Longest pipe length L A B C D e 165 m A B b 165 m A C e 165 m A f 165 m Equivalent pipe length 190 m 190 m 190 m Tota...

Страница 33: ...1 3 8 173 6 592 500 Ø 19 05 3 4 Ø 41 3 1 5 8 184 8 630 700 Ø 22 2 7 8 Ø 44 5 1 3 4 252 0 859 600 Ø 22 2 7 8 Ø 53 98 2 1 8 Total pipe length A B C D a b c d e 1 000 m L Longest pipe length Equivalent pipe length A B C D e 165 m A B C D e 190 m l Longest pipe length after 1st branch B C D e 40 m 90 m H Difference in height Outdoor Unit Indoor Unit H 90 m h Difference in height Indoor Unit Indoor Uni...

Страница 34: ...8 1 1 4 Ø 15 88 5 8 not increased 18 22 Ø 15 88 5 8 Ø 28 58 1 1 8 Ø 19 05 3 4 Ø 31 8 1 1 4 Ø 19 05 3 4 not increased 24 Ø 15 88 5 8 Ø 34 9 1 3 8 Ø 19 05 3 4 not increased Ø 19 05 3 4 not increased 26 34 Ø 19 05 3 4 Ø 34 9 1 3 8 Ø 22 2 7 8 Ø 38 1 1 1 2 Ø 22 2 7 8 not increased 36 60 Ø 19 05 3 4 Ø 41 3 1 5 8 Ø 22 2 7 8 not increased Ø 22 2 7 8 not increased 62 64 Ø 22 2 7 8 Ø 44 5 1 3 4 Ø 25 4 1 Ø 5...

Страница 35: ...branch should be increased by one step except pipe diameter B C D is same as Diameter A 40 m B C D e 90 m B C D Change a diameter 2 While calculating whole refrigerant pipe length pipe B C D length should be calculated twice A Bx2 Cx2 Dx2 a b c d e 1 000 m 3 Length of pipe from each indoor unit to the closest branch a b c d e 40 m 4 Length of pipe from outdoor unit to the farthest indoor unit 5 A ...

Страница 36: ...he main pipe diameter by downward indoor unit total capacity but its outdoor unit model name Do not let the connection pipe from branch to branch exceed the main pipe diameter chosen by outdoor unit model name EX Where connecting the indoor units to the 22 HP 61 6 kW outdoor unit to 130 of its system capacity 80 1 kW and branching 7k 2 2 kW indoor unit at the 1st branch 1 Main pipe diameter 22 HP ...

Страница 37: ...ted lower than the main pipe apply Oil Trap Pipe connection between outdoor units General Case The maximum pipe length after the first branching between the outdoor units is 10m or less Pipes between outdoor units are 2 m or less Examples of Wrong Pipe Connections 2 m or less Pipes between outdoor units are 2 m or longer OilTrap OilTrap OilTrap 2 m or less 2 m or less 2 m or less 0 2 m or longer 2...

Страница 38: ...n the length of the pipe between the outdoor units is more than 2 m Otherwise the unit may not operate properly Toward indoor unit Toward indoor unit Pipe inclination 2 or more Toward indoor unit Toward indoor unit Toward indoor unit Toward indoor unit Example 1 Example 2 Example 3 Example 1 Example 2 Toward indoor unit Toward indoor unit 2 m 2 m 2 m 0 2 m Oil Trap 38 PIPE CONNECTIONS BETWEEN INDO...

Страница 39: ...es between the outdoor units the accumulation of oil in the slave outdoor unit should be avoided Otherwise the unit may not operate properly Example 1 Toward indoor unit Toward indoor unit h h 0 2m Toward indoor unit Toward indoor unit Oil Trap h Toward indoor unit Example 3 Example 2 ...

Страница 40: ...ipe Ø 15 88 mm x 0 173 kg m Total liquid pipe Ø 12 7 mm x 0 118 kg m Total liquid pipe Ø 9 52 mm x 0 061 kg m Total liquid pipe Ø 6 35 mm x 0 022 kg m CF value of indoor unit Amount refrigerant of Indoor units Example 4Way Ceiling Cassette 14 5 kW 1ea Ceiling concealed Duct 7 3 kW 2ea Wall Mounted 2 3 kW 4ea CF 0 64 1 0 26 2 0 24 4 2 12 kg Attach the additional refrigerant table of IDU CAUTION Do ...

Страница 41: ...nit type installation position should be over 2 m from the floor Wall mounted type Cassette type Adoption of ventilation system choose ordinary ventilation system or building ventilation system Limitation in piping work Prepare for earthquake and thermal stress Liquid pipe Gas pipe Ⓐ Manifold Gauge Ⓑ Low pressure side Handle Ⓒ High pressure side Handle Total amount of refrigerant in the system 0 4...

Страница 42: ...Slave Master Slave Master Slave Master 1st 1st 1st Main pipe Distribution 2nd 2nd 3rd 3rd Main pipe Distribution Slave Master 1st 3rd 3rd main pipe distribution 2nd Horizontal Distribution Vertical Distribution The others Distribution Method 42 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT ENGLISH ...

Страница 43: ...ration If the diameter of the refrigerant piping selected by the procedures described is different from the size of the joint the connecting section should be cut with a pipe cutter Branch pipe should be insulated with the insulator in each kit Ⓐ To Outdoor Unit Ⓑ To Indoor Unit The indoor unit having larger capacity must be installed closer to Ⓐ than smaller one If the diameter of the refrigerant...

Страница 44: ...een branch and pipe should be sealed with the tape included in each kit Any cap pipe should be insulated using the insulator provided with each kit and then taped as described above Pinched pipe B Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pipe kit as shown in the figure Insulator Insulator of field pipe...

Страница 45: ...D15 88 I D19 05 I D12 7 I D12 7 I D19 05 I D15 88 I D12 7 I D19 05 O D12 7 I D6 35 I D15 88 371 394 83 11 0 70 2 3 3 2 JRBLN14521 471 517 125 120 130 I D19 05 I D15 88 I D12 7 I D19 05 I D22 2 I D41 3 I D38 1 I D41 3 O D34 9 I D34 9 I D34 9 I D22 2 I D28 58 I D28 58 I D38 1 I D41 3 I D34 9 I D38 1 O D22 2 O D38 1 O D15 88 O D28 58 90 2 3 3 3 2 2 3 416 444 96 O D15 88 I D9 52 I D12 7 O D12 7 I D6 3...

Страница 46: ...20 120 150 360 ID9 52 ID9 52 ID6 35 ID6 35 ID9 52 ID12 7 7 branch ARBL107 120 150 160 580 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 700 120 ID6 35 ID9 52 ID9 52 ID6 35 ID9 52 ID12 7 10 branch ARBL1010 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 10 branch ARBL2010 120 150 182 775 ID19 05...

Страница 47: ...e when pressure is applied and when the pressure drop is checked apply the following correction factor There is a pressure change of approximately 0 1 kg cm2 0 01 MPa for each 1 C of temperature difference Correction Temp at the time of pressurization Temp at the time of check X 0 1 For example Temperature at the time of pressurization 3 8 MPa is 27 C 24 hour later 3 73 MPa 20 C In this case the p...

Страница 48: ...d to 100 7 kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after maintaining the system in vacuum for 1 hr Scale Use a gravimeter One that can measure down to 0 1 kg If you are unable to prepare such a high precision gravimeter you may use a charge cylinder Indoor unit Slave 1 outdoor unit Master outdoor unit Liquid pipe Gas p...

Страница 49: ...d CAUTION ODU operation stops during vacuum mode Compressor can t operate Master unit PCB DIP switch on No 5 Select the mode using Button SVC Push the button Select the Function using Button Se3 Push the button Start the vacuum mode VACC ODU V V open ODU EEV open IDU EEV open Dip switch off and push the reset button on Master unit PCB Vacuum Mode DIP SWITCH 7 Segment SW01C confirm SW02C backward f...

Страница 50: ...sulate gas or low pressure pipe and liquid or high pressure pipe together Liquid pipe Gas pipe Power cables Finishing tape Insulating material Communication cables Be sure to fully insulate connecting portion These parts are not insulated Good example Liquid pipe Communication cables Communication cables Separation Gas pipe Power cables Insulating material Power cables Ⓐ Sleeve Ⓑ Heat insulating m...

Страница 51: ...ed should be connected to the terminal block for Outdoor Unit communication CAUTION Be sure to correct the outdoor unit to earth Do not connect ground wire to any gas pipe liquid pipe lightening rod or telephone earth line If earth is incomplete it may cause an electric shock 2 Core Shield Cable Multi Core Cable Remote control Remote control Remote control Remote control Indoor Unit Outdoor Unit O...

Страница 52: ...l a phase leading capacitor Make sure that the power unbalance ratio is not greater than 2 If it is greater the units lifespan will be reduced CAUTION When the 400 volt power supply is applied to N phase by mistake check damaged parts in control box and replace them Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block Round pressure terminal...

Страница 53: ...nal block When the central control system is connected to the outdoor unit a dedicated PCB must be connected between them When connecting communication cable between outdoor unit and indoor units with shielded cable connect the shield ground to the earth screw Heat pump UX6 UX5 Front Panel WARNING The temperature sensor for outdoor air should not be exposed to direct sunlight Provide an appropriat...

Страница 54: ...o 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 If the cable are laid inside conduits then the following point must also be taken into account when grouping various cable together for introduction into the conduits Power cable including power supply to air conditioner and communicat...

Страница 55: ...al switch or electrical outlet to disconnect each of indoor unit separately from the power supply CAUTION All installation site must require attachment of an earth leakage breaker If no earth leakage breaker is installed it may cause an electric shock Do not use anything other than breaker and fuse with correct capacity Using fuse and wire or copper wire with too large capacity may cause a malfunc...

Страница 56: ... contact it is not the point to make ground connection WARNING Indoor Unit ground wires are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main swi...

Страница 57: ...witch Fuse L N Communication cable 2 Wires Cable Power cable 4 Wires Cable Communication cable 3 Wires Cable Power cable 2 Wires Cable Power cable 2 Wires Cable Power cable 2 Wires Cable Power cable 2 Wires Cable Power cable 2 Wires Cable Master Indoor Units Outdoor Power supply 3Ø 4 wire Indoor Power supply 1Ø 2 wire Main Switch Slave1 Slave2 Slave3 R S T N Switch Fuse R S T N Switch Fuse R S T N...

Страница 58: ... are matched A A B B WARNING Indoor Unit ground wires are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main switch that can interrupt all the pow...

Страница 59: ...wire BUS type STAR type Abnormal operation can be caused by communication defect when connection of communication cable is installed like below figure STAR type Connection of communication cable must be installed like below figure between indoor unit to outdoor unit ...

Страница 60: ...Communication cable Main power terminal block Ground wire Power Ground cable Over 50 mm gap Communication cable Power Ground cable Over 50 mm gap Communication cable Main power terminal block Ground wire Insulation sleeves attachments Fix firmly not to be displaced Main power terminal block ODU IDU Communication cable ODU ODU Communication cable Main power terminal block Ground wire Power Ground c...

Страница 61: ... block Ground wire Power Ground cable Over 50 mm gap Communication cable Fix firmly not to be displaced Main power terminal block Insulation sleeves attachments Main power terminal block ODU IDU Communication cable ODU ODU Communication cable Fix firmly not to be displaced Insulation sleeves attachments Main power terminal block Ground wire Power Ground cable Over 50 mm gap Communication cable Lef...

Страница 62: ...nel from outdoor unit 2 Separate front cover of control box 3 Assemble the IO Module with screws 12 mm 2EA on designated location 4 Connect the connection wires according to the instructions Please refer to Setting and Using Method which is included in IO Module Installation Manual Location of IO Module ...

Страница 63: ...quentially appeared at the 7 segment in 5 seconds after applying the power This number represents the setting condition Initial display order Master Unit Slave Unit Dip switch setting Dip switch setting ODU Setting Slave 1 Slave 2 Slave 3 Order No Mean 8 22 Master model capacity 10 22 Slave 1 model capacity 10 22 Slave 2 model capacity 10 22 Slave 3 model capacity 8 88 Total capacity 1 Cooling Onl...

Страница 64: ...rol several sets of Indoor Units into a group set the group ID from 0 to F for this purpose Outdoor Units External PCB Example Group number setting 1st number indicate the group number 2nd number point out indoor unit number SODU B SODU A IDU B IDU A CEN B CEN A DRY1 DRY2 GND 12V B D A C B A 1 F Group Indoor unit Group recognizing the central controller No 0 group 00 0F No 1 group 10 1F No 2 group...

Страница 65: ...segment LED of the outdoor unit PCB After completing addressing address of each indoor unit is indicated on the wired remote control display window CH01 CH02 CH03 CH06 Indicated as numbers of connected indoor units Heat Pump Main PCB DIP SWITCH 7 Segment SW01C confirm SW02C ඔ backward SW03C ඖ forward SW04C cancel SW01D reset CAUTION In replacement of the indoor unit PCB always perform Automatic ad...

Страница 66: ...ired remote control or indoor unit display window It is not an error message will disappeared when on off button is pressed on remote control ex Display of 01 02 15 means connection of 15 indoor units and Automatic addressing is completed normally Automatic addressing start Waiting 3 minutes Power On Press RED Button for 5 sec SW01C 7 segment LED 88 Don t press RED Button SW01C Waiting about 2 7 m...

Страница 67: ...ll defrost on oFF selected the option Always Overrall defrost on blank save in EEPROM ODU address 0 254 set the value change the set value blank save in EEPROM Snow removal rapid defrost oFF op1 op3 selected the option change the set value blank save in EEPROM Targetpressureauto adjusting oFF op1 op6 selected the option change the set value blank save in EEPROM High Efficiency Cooling oFF on selec...

Страница 68: ...n Cool Heat Selection mode is set Function setting Switch Control Function Switch Up Switch Down oFF op1 mode op2 mode Right side On Left side On Not operate Cooling Cooling Right side On Right side On Not operate Heating Heating Left side Off Not operate Fan mode Off CAUTION Ask an authorized technician to setting a function If do not use a function set an off mode If use a function first install...

Страница 69: ...pensation mode setting method FAN Maximum RPM of each step Master unit PCB DIP switch on No 5 Select the mode using Button Func Push the button Select the Function using Button Fn2 Push the button Select the Option using Button op1 Push the button Start the Static pressure compensation mode Save the selected option value in EEPROM Capacity 8 14 HP 16 22 HP Max RPM Standard 730 950 op1 800 1000 op2...

Страница 70: ...ton Select the Option using Button op1 op14 Push the button Start the Night low noise function Save the selected option value in EEPROM Capacity Heat Pump UX5 UX6 Step Noise dB op1 op3 op10 55 59 op4 op6 op11 52 56 op7 op9 op12 49 53 op13 55 55 op14 50 50 CAUTION Request installer to set the function during installation If setting the op 13 14 the cooling capacity may go down When high load occurs...

Страница 71: ... the button Select the Function using Button Fn4 Push the button Select the Option using Button on oFF Push the button Overall defrost mode is set mode setting CAUTION Ask an authorized technician to setting a function A C RUN LLS4 A C RUN LLN4 models operate only overall defrost function on Operate overall defrost oFF Operate partial defrost ...

Страница 72: ...tch on No 5 Select the mode using Button Func Push the button Select the Function using Button Fn5 Push the button Select the Option using Button 0 254 Push the button ODU address is set CAUTION Ask an authorized technician to setting a function If use a function first install a Central controller ...

Страница 73: ...utton Select the Function using Button Fn6 Push the button Select the Option using Button oFF op1 op3 Push the button Mode is set CAUTION Ask an authorized technician to setting a function If do not use a function set an oFF mode mode setting setting Mode oFF Not setting op1 Snow removal mode op2 Rapid defrost mode op3 Snow removal mode Rapid defrost mode ...

Страница 74: ...g a function If do not use a function set an off mode Change a power consumption or capacity Setting mode Purpose Condensing temperature variation Evaporating temperature variation Heat Cool oFF Not setting op1 Increase capacity Increase capacity 2 C 3 C op2 Decrease power consumption Increase capacity 2 5 C 1 5 C op3 Decrease power consumption Decrease power consumption 4 5 C 2 5 C op4 Decrease p...

Страница 75: ...sh the button Select the Option using Button on oFF Push the button Start the High Efficiency cooling mode Save the selected option value in EEPROM CAUTION Ask an authorized technician to setting a function If use a function first install a Central controller According to the change of outdoor temperature switch the target pressure for the high energy efficiency Mode setting method ...

Страница 76: ...t the Function using Button Fn10 Push the button Select the Option using Button on oFF Push the button Auto dust removal mode is set CAUTION Ask an authorized technician to setting a function If use a function first install a Central controller Reversing rotation of the fan motor it s possible to remove dust automatically Mode setting method ...

Страница 77: ... using Button oFF op1 op3 Push the button Smart Load Control is set CAUTION Ask an authorized technician to setting a function If use a function first install a Central controller According to the difference of indoor temperature and setting temperature switch the target pressure to increase efficiency Mode setting method Option Setting Off Off op1 Smooth Mode op2 Quick Mode op3 Power Mode Mode Se...

Страница 78: ...e using Button Idu Push the button Select the Function using Button Id6 Push the button Select the Option using Button IDU No Mode OFF OP1 OP3 Push the button Start the IDU function CAUTION Ask an authorized technician to setting a function If use a function first install a Central controller Option Setting Off Usual Operation op1 Little low cooling but least power consumption op2 Medium Cooling w...

Страница 79: ...mperature sensor of indoor unit Outlet pipe temperature sensor of indoor unit is open or short 0 9 Indoor EEPROM Error In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF 1 0 Poor fan motor operation Disconnecting the fan motor connector Failure of indoor fan motor lock Outdoor unit related error 2 1 1 Master Outdoor Unit Inverter Compressor IPM Fault Master Outdoor Unit ...

Страница 80: ...tage is over 487V or below 270V 2 Slave1 Outdoor Unit Input Voltage High Low Voltage Slave1 Outdoor Unit input voltage is over 487V or below 270V 3 Slave2 Outdoor Unit Input Voltage High Low Voltage Slave2 Outdoor Unit input voltage is over 487V or below 270V 4 Slave3 Outdoor Unit Input Voltage High Low Voltage Slave3 Outdoor Unit input voltage is over 487V or below 270V 2 6 1 Master Outdoor Unit ...

Страница 81: ...nit Inverter Compressor2 High Discharge Temperature 4 Slave3 Outdoor Unit Inverter Compressor2 High Discharge Temperature Slave3 Outdoor Unit Inverter Compressor2 High Discharge Temperature 3 4 1 High Pressure of Master Outdoor Unit High Pressure of Master Outdoor Unit 2 High Pressure of Slave1 Outdoor Unit High Pressure of Slave1 Outdoor Unit 3 High Pressure of Slave2 Outdoor Unit High Pressure o...

Страница 82: ...ve3 Outdoor Unit Inverter Compressor Discharge Temperature Sensor open or short 4 2 1 Master Outdoor Unit Low Pressure Sensor Fault Master Outdoor Unit Low Pressure Sensor open or short 2 Slave1 Outdoor Unit Low Pressure Sensor Fault Slave1 Outdoor Unit Low Pressure Sensor open or short 3 Slave2 Outdoor Unit Low Pressure Sensor Fault Slave2 Outdoor Unit Low Pressure Sensor open or short 4 Slave3 O...

Страница 83: ... Temperature Sensor open or short 4 Slave3 Outdoor Unit Suction Temperature Sensor Fault Slave3 Outdoor Unit Suction Temperature Sensor open or short 4 7 1 Master Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor Fault Master Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor open or short 2 Slave1 Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor Fault Slave1...

Страница 84: ...eive signal main PCB at inverter PCB of Slave2 Outdoor Unit 4 Communication error Main PCB inverter PCB Failing to receive signal main PCB at inverter PCB of Slave3 Outdoor Unit 5 9 1 Mixing Installation of Sub Outdoor Unit Mixing Installation of Old Sub Outdoor Unit and New Slave Outdoor Unit 6 0 1 Inverter PCB EEPROM Error of Master Outdoor Unit Access Error of Inverter PCB of Master Outdoor Uni...

Страница 85: ...verter CT Sensor open or short of Master Outdoor Unit 2 Converter CT Sensor Error of Slave1 Outdoor Unit Converter CT Sensor open or short of Slave1 Outdoor Unit 3 Converter CT Sensor Error of Slave2 Outdoor Unit Converter CT Sensor open or short of Slave2 Outdoor Unit 4 Converter CT Sensor Error of Slave3 Outdoor Unit Converter CT Sensor open or short of Slave3 Outdoor Unit 7 5 1 Master Outdoor U...

Страница 86: ...6 1 Master Outdoor Unit Main PCB EEPROM Error Communication Fail Between Master Outdoor Unit Main MICOM and EEPROM or omitting EEPROM 2 Slave1 Outdoor Unit Main PCB EEPROM Error Communication Fail Between Slave1 Outdoor Unit Main MICOM and EEPROM or omitting EEPROM 3 Slave2 Outdoor Unit Main PCB EEPROM Error Communication Fail Between Slave2 Outdoor Unit Main MICOM and EEPROM or omitting EEPROM 4 ...

Страница 87: ...0 6 1 Master Outdoor Unit FAN IPM Fault Error Instant Over Current at Master Outdoor Unit Fan IPM 2 Slave1 Outdoor Unit FAN IPM Fault Error Instant Over Current at Slave1 Outdoor Unit Fan IPM 3 Slave2 Outdoor Unit FAN IPM Fault Error Instant Over Current at Slave2 Outdoor Unit Fan IPM 4 Slave3 Outdoor Unit FAN IPM Fault Error Instant Over Current at Slave3 Outdoor Unit Fan IPM 1 0 7 1 Master Outdo...

Страница 88: ...oard communication Error 2 Slave1 outdoor unit Main Board External Board communication Error Slave1 outdoor unit Main Board External Board communication Error 3 Slave2 outdoor unit Main Board External Board communication Error Slave2 outdoor unit Main Board External Board communication Error 4 Slave3 outdoor unit Main Board External Board communication Error Slave3 outdoor unit Main Board External...

Страница 89: ...ter Outdoor Unit Fan Heatsink High Temperature 2 Slave1 Outdoor Unit Fan Heatsink High Temperature System is turned off by Slave1 Outdoor Unit Fan Heatsink High Temperature 3 Slave2 Outdoor Unit Fan Heatsink High Temperature System is turned off by Slave2 Outdoor Unit Fan Heatsink High Temperature 4 Slave3 Outdoor Unit Fan Heatsink High Temperature System is turned off by Slave3 Outdoor Unit Fan H...

Страница 90: ...vided into 2 or more refrigerant systems and each system is independent amount of replenished refrigerant of each system shall be adopted Amount of replenished refrigerant per one outdoor unit system Amount of replenished refrigerant at factory shipment Amount of additionally replenished refrigerant depending on piping length or piping diameter at customer Outdoor unit Indoor unit Outdoor unit Ind...

Страница 91: ...nical ventilator Reducing the outdoor refrigerant qty R410A Refrigerant concentration kg m3 Total amount of replenished refrigerant in refrigerant facility kg Capacity of smallest room where indoor unit is installed m3 In case the result of calculation exceeds the limiting concentration perform the same calculations by shifting to the second smallest and the third smallest rooms until at last the ...

Страница 92: ...the windbreak for easy air flow Select a well drained place CAUTION Air conditioners should not be installed in areas where corrosive gases such as acid or alkaline gas are produced Do not install the product where it could be exposed to sea wind salty wind directly It can result corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or...

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Страница 99: ...AIR CONDITIONER www lg com Copyright 2014 2019 LG Electronics Inc All Rights Reserved ENGLISH Owners Manual MFL67163410 Rev00 032020 ...

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