LG ARUN080LTS4 Installation Manual Download Page 54 | Manualshive

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54

PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT

ENGLISH

Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe sepa-
rately 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. When insula-
tion work is insufficient, there is a possibility of condensation drip, etc. Pay special attention to in-
sulation work to ceiling plenum.

Ⓐ

Heat insulation material

Ⓑ

Pipe

Ⓒ

Outer covering(Wind the connection part
and cutting part of heat insulation material
with a finishing tape.)

Penetrations

Heat insulation

material

Ad Heat - resistant poly-

ethylene foam + Adhesive tape

Outer

covering

Indoor

Vinyl tape

Floor ex-

posed

Water-proof hemp cloth +

Bronze asphalt

Outdoor

Water-proof hemp cloth +

Zinc plate + Oily paint

NOTE

!

When using polyethylene cover as cover-
ing material, asphalt roofing shall not be
required.

Bad

example

• Do not insulate gas or low pressure pipe and liquid or high

pressurepipe 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

Separ
-ation

Gas pipe
Power cables

Insulating material

Power cables

Ⓐ

Sleeve

Ⓑ

Heat insulating material

Ⓒ

Lagging

Ⓓ

Caulking material

Ⓔ

Band

Ⓕ

Waterproofing layer

Ⓖ

Sleeve with edge

Ⓗ

Lagging material

Ⓘ

Mortar or other incombustible caulking

Ⓙ

Incombustible heat insulation material

When filling a gap with mortar, cover the
penetration part with steel plate so that
the insulation material will not be caved
in. For this part, use incombustible mate-
rials for both insulation and covering.
(Vinyl covering should not be used.)

1m

1m

A

B

D

F

G

B

G

D

B

H

I

J

A

E

B

I

A

B

D

C

Inner wall (concealed)

Floor (fireproofing)

Penetrating portion on fire

limit and boundary wall

Roof pipe shaft

Outer wall

Outer wall (exposed)

Thermal insulation of refrigerant piping

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Summary of Contents for ARUN080LTS4

Page 1: ...ual completely before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly your set and retain it for future reference ENGLISH ...

Page 2: ...condi tioner 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 You c...

Page 3: ... shock or fire may result Ask the dealer or an authorized technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Always intstall a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock For re installation of the installed...

Page 4: ...Consult the dealer regarding the appropriate measures to prevent the safety limit from being ex ceeded Should the refrigerant leak and cause the safety limit to be exceeded harzards due to lack of oxygen in the room could result 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 o...

Page 5: ... 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 env...

Page 6: ... during 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 shou...

Page 7: ...g system 45 Refrigerant charging 46 Distribution Method 47 Branch pipe Fitting 51 Leak Test and Vacuum drying 53 Vacuum Mode 54 Thermal insulation of refrigerant piping 55 ELECTRICAL WIRING 55 Caution 57 Control box and connecting position of wiring 58 Communication and Power Cables 59 Wiring of main power supply and equipment capacity 60 Field Wiring 66 Checking the setting of outdoor units 67 Au...

Page 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...

Page 9: ...Model Combination Unit Independent Unit Dimensions WxHxD mm Net Weight kg Precharged Refrigerant amount kg Pipe Connctions Liquid mm inch Gas mm inch Number of maximum connectable indoor units 8 10 12 ARUN080LTS4 ARUN100LTS4 ARUN120LTS4 ARUN080LTS4 ARUN100LTS4 ARUN120LTS4 920 1 680 760 1 920 1 680 760 1 920 1 680 760 1 195 1 201 1 201 1 6 5 6 5 6 5 9 52 3 8 9 52 3 8 12 7 1 2 19 05 3 4 22 2 7 8 28 ...

Page 10: ... 10 8 5 6 5 10 8 5 6 5 10 2 6 5 10 2 6 5 19 05 3 4 19 05 3 4 19 05 3 4 19 05 3 4 41 3 1 5 8 41 3 1 5 8 41 3 1 5 8 41 3 1 5 8 64 64 64 64 Number of outdoor units 2 Outdoor Units Capacity HP Model Combination Unit Independent Unit Dimensions WxHxD mm Net Weight kg Precharged Refrigerant amount kg Pipe Connctions Liquid mm inch Gas mm inch Number of maximum connectable indoor units 30 32 34 36 ARUN30...

Page 11: ...0 1 680 760 4 1 240 1 680 760 4 270 1 235 3 270 2 235 2 270 2 235 2 280 2 235 2 8 5 x 4 8 5 x 4 8 5 x 4 10 2 8 5 2 22 2 7 8 22 2 7 8 22 2 7 8 22 2 7 8 44 5 1 3 4 44 5 1 3 4 53 98 2 1 8 53 98 2 1 8 64 64 64 64 Number of outdoor units 4 Outdoor Units Capacity HP Model Combination Unit Independent Unit Dimensions WxHxD mm Net Weight kg Precharged Refrigerant amount kg Pipe Connctions Liquid mm inch G...

Page 12: ...d mm inch Gas mm inch Number of maximum connectable indoor units 16 18 20 ARUV160LTS4 ARUV180LTS4 ARUV200LTS4 ARUV160LTS4 ARUV180LTS4 ARUV200LTS4 1 240 1 680 760 1 1 240 1 680 760 1 1 240 1 680 760 1 225 1 260 1 260 1 6 6 5 6 5 12 7 1 2 15 88 5 8 15 88 5 8 28 58 1 1 8 28 58 1 1 8 28 58 1 1 8 26 40 29 45 32 50 Cooling only Model Name ARUV LTS4 Number of outdoor units 1 Outdoor Unit Capacity HP Mode...

Page 13: ... 8 34 9 1 3 8 41 3 1 5 8 49 60 52 64 55 64 58 64 Number of outdoor units 2 Outdoor Units 3 Outdoor Units Capacity HP Model Combination Unit Independent Unit Dimensions WxHxD mm Net Weight kg Precharged Refrigerant amount kg Pipe Connctions Liquid mm inch Gas mm inch Number of maximum connectable indoor units 38 40 42 44 ARUV380LTS4 ARUV400LTS4 ARUV420LTS4 ARUV440LTS4 ARUV200LTS4 ARUV200LTS4 ARUV18...

Page 14: ...2 7 8 22 2 7 8 53 98 2 1 8 53 98 2 1 8 53 98 2 1 8 53 98 2 1 8 64 64 64 64 Number of outdoor units 4 Outdoor Units Capacity HP Model Combination Unit Independent Unit Dimensions WxHxD mm Net Weight kg Precharged Refrigerant amount kg Pipe Connctions Liquid mm inch Gas mm inch Number of maximum connectable indoor units 62 64 66 68 ARUV620LTS4 ARUV640LTS4 ARUV660LTS4 ARUV680LTS4 ARUV180LTS4 ARUV180L...

Page 15: ...Model Combination Unit Independent Unit Dimensions WxHxD mm Net Weight kg Precharged Refrigerant amount kg Pipe Connctions Liquid mm inch Gas mm inch Number of maximum connectable indoor units 82 84 86 88 ARUV820LTN4 ARUV840LTN4 ARUV860LTN4 ARUV880LTN4 ARUV220LTN4 ARUV220LTN4 ARUV220LTN4 ARUV220LTN4 ARUV200LTS4 ARUV220LTN4 ARUV220LTN4 ARUV220LTN4 ARUV200LTS4 ARUV200LTS4 ARUV220LTN4 ARUV220LTN4 ARU...

Page 16: ...pipe must not be used Do not heat pipes more than necessary to 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 characteri...

Page 17: ...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...

Page 18: ... A E B A B E A E B F C D A E B D A C B D E C A E B F C D A E B F C D A E B A B E A E B F C D A E B D A C B D E C A E B F C D A E B F C D A E B A B E A E B F C D A E B D A C B D E C A E B F C D A E B F C D A E B A B E A E B F C D A E B D A C B D E C A E B F C D A E B F C D A E B A B E A E B F C D A E B D A C B D E C A E B F C D A E B F C D A E B A B E A E B F C D A E B D A C B D E C A E B F C D A E...

Page 19: ...y malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the higher installation console by 50cm than the average snowfall an nual average 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 10cm always remove snow for operation The height of H frame must be more than 2 ...

Page 20: ...e sure to support it at four 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 unde...

Page 21: ...it s legs before being fixed The outdoor unit supports should have minimum height of 200mm Anchor bolts must be inserted at least 75mm 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 INSTALLATION Chassis ...

Page 22: ...Base Pan before fix ing 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 t...

Page 23: ... to let burrs drop in the tubing Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper tube in a bar or die as in dicated 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 Indoor unit kW Btu h Pipe A Gas Liquid Gas Liquid 5 6 19 100 1 2 1 4 0 5 0 8 0 ...

Page 24: ...urn it until the shaft stops 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 Ø9 52 38 4 12 8 13 2 90 2 45 2 A R 0 4 0 8 Ø12 7 55 6 16 2 16 6 Ø15 88 75 7 19 3 19 7 CAUTION Always use a charge hose for service po...

Page 25: ...ene Methylene over 120 C the heat resistance temperature Add the insulation over 10mm 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...

Page 26: ...t cold and warm Clogging of EEV Capillary Gas shortages Degradation of refrigerant oil Poor insulation of the com pressor 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 sho...

Page 27: ...egradation 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 generated...

Page 28: ...wrench to open close the valve Gas pipe Service Port Liquid pipe Refrigerant Charging Port CAUTION Please block the pipe knock outs of the front and side panels after installing the pipes Animals or foreign objects may be brought in to damage wires Refrigerant Charging Port is not available in ARUV LTS4 LTN4 WARNING Always careful not to leak the refrigerant during welding The refrigerant generate...

Page 29: ...t Side Pipe Draw Out Refrigerant Pipe Regulator Nitrogen Taping Valve Nitrogen Nitrogen Direction 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 work after removing bur...

Page 30: ...y whether the liquid gas pipes are locked Extract remaining refrigerant or air inside using the service port Remove the leakage prevention cap Gas pipe Service Port Liquid pipe Leakage Prevention Cap Refrigerant Charging Port Pipe Drawing Out during Single Series connection Method of drawing out pipes on the front side Proceed with the pipe work as shown in the below figure for front side pipe dra...

Page 31: ...E CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 31 ENGLISH 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 ...

Page 32: ...ng length from outdoor branch to outdoor unit 10m equivalent length max 13m for 22HP or more Conditional Application To satisfy below condition to make 40 m 90 m of pipe length after first branch Diameter of pipes between first branch and the last branch should be increased by one step except pipe diameter B C D is same as Diameter A Ø6 35 Ø 9 52 Ø 12 7 Ø 15 88 Ø 19 05 Ø 22 2 Ø 25 4 Ø 28 58 Ø 31 8...

Page 33: ... L150m 200 m Conditional application l 40m 90 m Conditional application H 110m Slave2 Slave3 Slave1 Master G ODU Capacity Master Slave1 Slave 2 Slave 3 h 40m h1 Piping length form outdoor branch to outdoor unit 10 m equivalent length max 13 m for 22 HP or more Conditional Application To satisfy below condition to make 40 m 90 m of pipe length after first branch Diameter of pipes between first bran...

Page 34: ...3 6 592 500 Ø19 05 3 4 Ø41 3 1 5 8 184 8 630 700 Ø22 2 7 8 Ø44 5 1 3 4 224 0 764 400 Ø22 2 7 8 Ø53 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 150m 200m A B C D e 175m 225m l Longest pipe length after 1st branch B C D e 40m 90m H Difference in height Outdoor Unit Indoor Unit H 110m h Difference in height Indoor Unit Indoor Unit h 40m ...

Page 35: ...1st branch When level difference is 50m or more HP Liquid pipe mm inch Gas pipe mm inch Liquid pipe mm inch Gas pipe mm inch Liquid pipe mm inch Gas pipe mm inch 8 Ø 9 52 3 8 Ø 19 05 3 4 Ø 12 7 1 2 Ø 22 2 7 8 Ø 12 7 1 2 not increased 10 Ø 9 52 3 8 Ø 22 2 7 8 Ø 12 7 1 2 Ø 25 4 1 Ø 12 7 1 2 not increased 12 14 Ø 12 7 1 2 Ø 28 58 1 1 8 Ø 15 88 5 8 not increased Ø 15 88 5 8 not increased 16 Ø 12 7 1 2...

Page 36: ...or units ARCNN31 Ⓖ Connection branch pipe between Outdoor units ARCNN21 10m or less H 110m L 200m 40m Master Slave2 Slave1 ODU Capacity Master Slave1 Slave2 40m h1 Branch pipe can not be used after header Branch pipe can not be used after header 10m or less H 110m L 200m 40m Master Slave3 Slave1 Slave2 ODU Capacity Master Slave1 Slave2 Slave3 40m G G h1 F E F E Total pipe length A a b c d e f 1 00...

Page 37: ...onnected Ⓐ Outdoor Unit Ⓑ 1st branch Ⓒ Y branch Ⓓ Indoor Unit Ⓔ Connection branch pipe between Outdoor units ARCNN21 Ⓕ Header Ⓖ Sealed piping L 150m 200m Conditional application 40m 90m Conditional application L 110m 40m Branch pipe can not be used after header Branch pipe can not be used after header 10m or less H 110m Master Slave Master Slave L 150m 200m Conditional application 40m 90m Conditio...

Page 38: ...lave1 Slave2 L 150m 200m Conditional application 40m 90m Conditional application 40m h1 Branch pipe can not be used after header Branch pipe can not be used after header 10m or less H 110m G F E G F E L 150m 200m Conditional application 40m 90m Conditional application ODU Capacity Master Slave1 Slave2 Slave3 40m Master Slave3 Slave1 Slave2 h1 Refrigerant pipe diameter from branch to branch B C Dow...

Page 39: ...tween outdoor unit and the farthest indoor unit is 90m or more Liquid and Gas pipes are increased The level difference Outdoor unit Indoor unit is 50m or more Only liquid pipe is in creased Upward Out door unit total capacity Standard Pipe Diameter Increased Pipe Diameter When pipe length is 90m or more from ODU to 1st branch When level difference is 50m or more HP Liquid pipe mm inch Gas pipe mm ...

Page 40: ...ipe which is same with main pipe diameter Example Do not choose the 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...

Page 41: ... located 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 2m or less Examples of Wrong Pipe Connections 2m or less Pipes between outdoor units are 2m or longer OilTrap Oil Trap Oil Trap 2m or less 2m or less 2m or less 0 2m or more 2m o...

Page 42: ...it may not operate prop erly Apply Oil Trap as shown below when the length of the pipe between the outdoor units is more than 2m 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 uni...

Page 43: ...s between the outdoor units the accumulation of oil in the slave out door 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 ...

Page 44: ...liquid pipe Ø19 05 mm x 0 266 kg m Total liquid pipe Ø15 88 mm x 0 173 kg m Total liquid pipe Ø12 7 mm x 0 118 kg m Total liquid pipe Ø9 52 mm x 0 061 kg m Total liquid pipe Ø6 35 mm x 0 022 kg m CF value of indoor unit Amount refrigerant of Indoor units Example 4Way Ceiling Cassette 14 5kW 1ea Ceiling concealed Duct 7 3kW 2ea Wall Mounted 2 3kW 4ea CF 0 64 1 0 26 2 0 24 4 2 12 kg Attach the addit...

Page 45: ...nit type installation position should be over 2m 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 44...

Page 46: ...ed vertically Header Slave Master Slave Master Slave Master 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 ...

Page 47: ...ation 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 in stalled closer to Ⓐ than smaller one If the diameter of the refrigerant...

Page 48: ...hould be insulated with the insulator in each kit Joints between 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...

Page 49: ...15 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 ARBLN14521 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 35...

Page 50: ...00 160 ID15 88 ID12 7 ID19 05 ID15 88 ID22 2 ID28 58ID25 4 120 120 150 360 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...

Page 51: ...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...

Page 52: ... 100 7kPa vac uum drying If the system cannot be evacuated to 100 7kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after main taining the system in vacuum for 1 hr Scale Use a graviometer One that can measure down to 0 1kg If you are unable to prepare such a high precision gravimeter you may use a charge cylinder Indoor unit S...

Page 53: ...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 fo...

Page 54: ...al asphalt roofing shall not be required Bad example Do not insulate gas or low pressure pipe and liquid or high pressurepipe 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 Separ ation Gas pipe Power cables...

Page 55: ...ired with the same multiplecore cable the resultant poor trans mitting and receiving will cause erroneous operations mark in the figure below Only the communication cable specified 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...

Page 56: ...ing There fore never install a phase leading capacitor Make sure that the power unbalance ratio is not greater than 2 If it is greater the units lifes pan 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 b...

Page 57: ...al 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 UX3 UX2 Front Panel WARNING The temperature sensor for outdoor air should not be exposed to direct sunlight Provide an appropriate...

Page 58: ...irect 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 If the cable are laid inside conduits then the following point must also be taken into ac count when grouping various cable together for introduction into the conduits Power cable including power supply to air conditi...

Page 59: ...wire or copper wire with too large capacity may cause a malfunction of unit or fire WARNING Follow ordinance of your governmental organization for technical standard related to elec trical equipment wiring regulations and guidance of each electric power company Make sure to use specified cables for connections so that no external force is imparted to terminal connections If connections are not fix...

Page 60: ...ct 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 connec tion 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 t...

Page 61: ... T N Switch 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 4wires Indoor Power supply 1Ø 2wires Main Switch Slave1 Slave2 Slave3 R S T N Switch Fuse R S T N Switch Fuse R...

Page 62: ...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 connec tion 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 power sources in an...

Page 63: ...ire BUS type STAR type Abnormal operation can be caused by com munication 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 ...

Page 64: ... Communication cable Main power terminal block Ground wire Power Ground cable Over 50mm gap Communication cable Main power terminal block Ground wire Power Ground cable Over 50mm gap Communication cable Main power terminal block Insulation sleeves attachments Fix ﬁrmly not to be displaced ODU IDU Communication cable ODU ODU Communication cable Main power terminal block Ground wire Power Ground cab...

Page 65: ...ation cable e wer Main power terminal block Ground wire Power Ground cable Over 50mm gap Communication cable e wer Main power terminal block Ground wire Power Ground cable Over 50mm gap Communication cable Main power terminal block Insulation sleeves attachments Fix ﬁrmly not to be displaced ODU IDU Communication cable ODU ODU Communication cable e wer Main power terminal block Ground wire Power G...

Page 66: ...ent in 5 seconds after applying the power This number represents the setting condition For example represents R410A 30HP Initial display order Example ARUN620LTE4 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 c...

Page 67: ...on 7 segment LED of the outdoor unit PCB After completing addressing address of each indoor unit is indicated on the wired remote con trol display window CH01 CH02 CH03 CH06 Indicated as numbers of connected in door units 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 addres...

Page 68: ...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...

Page 69: ...e option change the set value blank save in EEPROM ODU address 0 255 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 Target pressure adjusting op1 op4 selected the option change the set value blank save in EEPROM Functions save in EEPROM will be kept continuously though the system power was...

Page 70: ...ol several sets of Indoor Units into a group set the group ID from 0 to F for this pur pose 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...

Page 71: ...2 Push the button Cool Heat Selection mode is set Function setting Switch control Function Switch Phase Switch Bottom oFF op1 mode op2 mode Right Left Not operate Cooling Cooling Right Right Not operate Heating Heating Left 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 a Cool Heat selecto...

Page 72: ...sation 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 op3 Push the button Start the Static pressure compensation mode Save the selected option value in EEPROM Capacity UX2 UX3 Max RPM Standard 730 950 op1 760 1020 op2 780 105...

Page 73: ...n3 Push the button Select the Option using Button op1 op12 Push the button Start the Night low noise function Save the selected option value in EEPROM Step Judgment Time Hr Operation Time Hr op1 8 9 op2 6 5 10 5 op3 5 12 op4 8 9 op5 6 5 10 5 op6 5 12 op7 8 9 op8 6 5 10 op9 5 12 op10 Continuous operation op11 Continuous operation op12 Continuous operation Capacity Heat Pump UX2 UX3 Step Noise dB op...

Page 74: ...unc Push 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 ARUN LTS4 models operate only overall defrost function on Operate overall defrost off Operate partial defrost ...

Page 75: ...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 0 255 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 ...

Page 76: ...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 ...

Page 77: ... set Select the Option using Button HEAT COOL Push the button CAUTION Ask an authorized technician to setting 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 op1 Increase capacity Increase capacity 3 C 2 C op2 Decrease power consumption Increase capacity 1 5 ...

Page 78: ...tlet pipe temperature 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 1 7 Inlet Air temperature sensor of FAU Air temperature sensor of indoor unit is open or sh...

Page 79: ...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 ...

Page 80: ...oor Unit Inverter Compressor2 High Dis charge Temperature 4 Slave3 Outdoor Unit Inverter Compres sor2 High Discharge Temperature Slave3 Outdoor Unit Inverter Compressor2 High Dis charge 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 Pr...

Page 81: ...e3 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 Sen sor Fault Slave1 Outdoor Unit Low Pressure Sensor open or short 3 Slave2 Outdoor Unit Low Pressure Sen sor Fault Slave2 Outdoor Unit Low Pressure Sensor open or short 4 Slave3 ...

Page 82: ...rature Sensor Fault Master Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor open or short 2 Slave1 Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor Fault Slave1 Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor open or short 3 Slave2 Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor Fault Slave2 Outdoor Unit Inverter Compressor2 Discharge Tempe...

Page 83: ...in PCB inverter PCB Failing to receive 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 Wrong combination of Outdoor units Installed combination mixed with old series model Multi V Ⅲ Ⅱ 6 0 1 Inverter PCB EEPROM Error of Mas ter Outdoor Unit Access Error of Inverter PCB ...

Page 84: ...onverter 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 Slave2 Outdoor Unit Converter CT Sensor open or short of Slave2 Outdoor Unit 7 5 1 Master Outdoor...

Page 85: ...1 Master Outdoor Unit Main PCB EEP ROM Error Communication Fail Between Master Outdoor Unit Main MICOM and EEPROM or omitting EEPROM 2 Slave1 Outdoor Unit Main PCB EEP ROM Error Communication Fail Between Slave1 Outdoor Unit Main MICOM and EEPROM or omitting EEPROM 3 Slave2 Outdoor Unit Main PCB EEP ROM Error Communication Fail Between Slave2 Outdoor Unit Main MICOM and EEPROM or omitting EEPROM 4...

Page 86: ...1 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 Out...

Page 87: ...Master Outdoor Unit is open or short 2 Slave1 Outdoor Unit Oil Level Sensor Error Oil Level Sensor of slave1 Outdoor Unit is open or short 3 Slave2 Outdoor Unit Oil Level Sensor Error Oil Level Sensor of slave2 Outdoor Unit is open or short 4 Slave3 Outdoor Unit Oil Level Sensor Error Oil Level Sensor of slave3 Outdoor Unit is open or short 1 4 5 1 Master outdoor unit Main Board Exter nal Board co...

Page 88: ...icom communication Error Master Outdoor Unit Main Board Main Sub Micom communication failed 2 Slave1 outdoor unit External Board Main Sub Micom communication Error Slave1 Outdoor Unit Main Board Main Sub Micom communication failed 3 Slave2 outdoor unit External Board Main Sub Micom communication Error Slave2 Outdoor Unit Main Board Main Sub Micom communication failed 4 Slave3 outdoor unit External...

Page 89: ...ivided 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 In...

Page 90: ...ntilator 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 result i...

Page 91: ... 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 inefficient performance If outdoor unit is i...

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