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ENGLISH

Refrigerant pipe diameter from branch to branch (B,C,D)

WARNING

• Piping length from outside unit branch to outside unit

≤

10m(32.8ft), equivalent length : max 13m(42.7ft) (for
12Ton(144kBtu) or more)

* If the large capacity indoor units (Over 48kBtu; using over

Ø15.88(5/8)/ Ø9.52(3/8)) are installed, it should be used the Valve
Group setting.

Refrigerant pipe diameter from branch to branch (B,C)

Downward indoor

unit total capacity

[kW(Btu/h)]

Liquid pipe

[mm(inch)]

Gas pipe [mm(inch)]

Low pressure

High pressure

≤

5.6(19,100)

Ø6.35(1/4)

Ø12.7(1/2)

Ø9.52(3/8)

< 16.0 (54,600)

Ø9.52(3/8)

Ø15.88(5/8)

Ø12.7(1/2)

≤

22.4 (76,400)

Ø9.52(3/8)

Ø19.05(3/4)

Ø15.88(5/8)

< 33.6(114,700)

Ø9.52(3/8)

Ø22.2(7/8)

Ø19.05(3/4)

< 50.4 (172,000)

Ø12.7(1/2)

Ø28.58(1 1/8)

Ø22.2(7/8)

< 67.2 (229,400)

Ø15.88(5/8)

Ø28.58(1 1/8)

Ø22.2(7/8)

< 72.8(248,500)

Ø15.88(5/8)

Ø34.9(1 3/8)

Ø28.58(1 1/8)

< 100.8(344,000)

Ø19.05(3/4)

Ø34.9(1 3/8)

Ø28.58(1 1/8)

< 173.6(592,500)

Ø19.05(3/4)

Ø41.3(1 5/8)

Ø34.9(1 3/8)

< 184.8(630,700)

Ø22.2(7/8)

Ø44.5(1 3/4)

Ø41.3(1 5/8)

≤

224.0(764,400)

Ø22.2(7/8)

Ø53.98(2 1/8)

Ø44.5(1 3/4)

Total pipe length = A + B + C1 + C2 + C3 + a + b + c + d
+ e + f + g + i + j + k + l + m + n ≤ 500m(1640ft)

WARNING

When the equivalent length between a outside and the farthest
indoor unit is 90m(295ft) or more, main pipe(A) must be increased
one grade.

Refrigerant pipe diameter from outside unit to ﬁrst
branch. (A)

Y branch, Header and HR unit connection pattern

* If available on site, it use this size. Otherwise it can't be increased.

Pattern 1

HR1

48k

HR2

48k

• Impossible installation : Head branch pipe HR unit

Upward out-

side unit total

capacity

Pipe diameter

Pipe diameter when pipe
length is 90m over to 1st

branch

TON

Liquid

mm(inch)

Low pres-

sure gas

pipe

mm(inch)

High pres-

sure gas

pipe

mm(inch)

Liquid

mm(inch)

Low pres-

sure gas

pipe

mm(inch)

High pres-

sure gas

pipe

mm(inch)

9.52(3/8) 22.2(7/8)

19.05(3/4)

12.7(1/2) 22.2(7/8)

19.05(3/4)

12.7(1/2)

25.4(1)

15.88(5/8)

25.4(1)

28.58(1-

1/8)

28.58

(1-1/8)

19.05(3/4)

34.9(1-

3/8)

28.58

(1-1/8)

22.2(7/8)

34.9

(1-3/8)

28.58

(1-1/8)

41.3

(1-5/8)

34.9

(1-3/8)

41.3

(1-5/8)

34.9

(1-3/8)

Pattern 2

HR1

24k

• Impossible installation : HR unit Head branch
pipe Y and Head branch pipe.

• * : Assume equivalent pipe length of Y branch to be 1.64ft, that

of header to be 3.3ft, calculation purpose

• it is recommended that indoor unit is installed at lower position

than the header.

• ** : Conditional application

Longest pipe length

*Equivalent pipe length

A+B+C3+k

≤

150m(200m**)
[(492ft(656ft**)]

A+B+C3+k

≤

175m(225m**)
[(574ft(738ft**)]

Longest pipe length after 1st branch

B+C+D+e

≤

40m(90m**) [131ft(295ft)]

Difference in height (Outdoor Unit

↔

Indoor Unit)

≤

50m(164ft)

Difference in height (Indoor Unit

↔

Indoor Unit)

≤

40m(131ft)

Difference in height (Outdoor Unit

↔

Outdoor Unit)

≤

2m(6.6ft)

"a", "b"

Difference in height(HR unit

↔

HR unit)

≤

15m(49ft) , b

≤

5m(16ft)

Summary of Contents for multi V ARWB Series

Page 1: ...stallation 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 P NO MFL68100306 MODELS ARWB Series http www lghvac com www lg com ENGLISH ...

Page 2: ...There is the risk of death injury fire or explosion When installing and moving the air conditioner to another site do not charge it with a different refrigerant from the refrigerant specified on the unit If a different refrigerant or air is mixed with the original refrigerant the refrigerant cycle may malfunction and the unit may be damaged Do not reconstruct to change the settings of the protecti...

Page 3: ...ul about product transportation Only one person should not carry the product if it weighs more than 20 kg Some products use PP bands for packaging Do not use any PP bands for a means of transportation It is dangerous Do not touch the heat exchanger fins Doing so may cut your fingers When transporting the outside unit suspending it at the specified positions on the unit base Also support the outsid...

Page 4: ...More than Triple outside unit s 130 OUTSIDE UNITS INFORMATION INSTALLATION PROCESS Power Supply 3Ø 460V 60Hz Model Name ARWB DAS4 Unit 1 Unit System Capacity HP 8 10 12 TON 6 8 10 Model Combination Unit ARWB072DAS4 ARWB096DAS4 ARWB121DAS4 Independent Unit ARWB072DAS4 ARWB096DAS4 ARWB121DAS4 Refrigerant Precharged Amount kg 5 8 5 8 5 8 lbs 12 8 12 8 12 8 Maximum Connectable Number of Indoor Units 1...

Page 5: ...it ARWB072BAS4 ARWB096BAS4 Refrigerant Precharged Amount kg 5 8 5 8 lbs 12 8 12 8 Maximum Connectable Number of Indoor Units 13 16 Net Weight kg 127x1 127x1 lbs 280x1 280x1 Dimensions WxHxD mm 755x997x500 755x997x500 inch 29 23 32x39 1 4x 19 11 16 x1 29 23 32x39 1 4x 19 11 16 x1 Refrigerant Connecting Pipes Liquid Pipes mm inch 9 52 3 8 9 52 3 8 Low Pressure Gas Pipes mm inch 22 7 7 8 22 7 7 8 Hig...

Page 6: ...t ALTERNATIVE REFRIGERANT R410A The refrigerant R410A has the property of higher operating pressure in comparison with R22 Therefore all materials have the characteristics of higher resisting pressure than R22 ones and this characteristic should be also consid ered during the installation R410A is an azeotrope of R32 and R125 mixed at 50 50 so the ozone depletion potential ODP of R410A is 0 These ...

Page 7: ... servicing space 481 18 15 16 345 13 19 32 300 11 13 16 more 300 11 13 16 more Servicing space Servicing space 1 2 3 7 453 17 27 32 174 6 27 32 174 6 27 32 218 8 19 32 182 7 5 32 450 17 23 32 450 17 23 32 100 3 15 16 more Serviceing space 300 11 13 16 more 450 17 23 32 more Servicing space Servicing space 5 4 6 419 16 1 2 61 2 13 32 137 5 13 32 124 4 7 8 128 5 1 32 30 1 3 16 100 3 15 16 more Servi...

Page 8: ...tower Use an anti freeze For using an anti freeze change the DIP switch on main PCB in outside unit Refer to the additive amount about freezing temperature as in the table given below In addition to anti freeze it may cause the change of the pressure in the water system and the low performance of the product Make sure to use the closed cooling type tower When applying the open type cooling tower u...

Page 9: ...e Unit s legs before being fixed The outside unit supports should have minimum height of 200mm 7 7 8inch Anchor bolts must be inserted at least 75mm 2 15 16 inch At least 100mm 3 15 16 inch At least 100mm 3 15 16 inch At least 100mm 3 15 16 inch At least 100mm 3 15 16 inch The location of anchor bolt 500 62 2 7 16 62 2 7 16 631 24 27 32 755 29 23 32 Unit mm inch 500 19 11 16 472 18 37 64 Foundatio...

Page 10: ...pper tube 90 Slanted Uneven Rough Preparation of Piping 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 re move burrs in order to avoid 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 indicated dimension ...

Page 11: ... Ø15 88 5 8 12 0 1 2 8 9 0 9 5mm 0 24inch 25 0 2 5 18 4 1 8 75 7 55 5 1 Ø19 05 3 4 14 0 1 4 10 3 1 0 110 10 81 1 7 4 Ø22 2 7 8 30 0 3 0 22 1 2 2 8mm 0 31inch 25 3 0 18 5 2 2 Ø25 4 1 0 Refrigerant piping on three principles Drying Cleanliness Airtight Should be no moisture inside No dust inside There is no refrigerant leakage Items Moisture Dust Leakage Cause failure Significant hydroly sis of refr...

Page 12: ...ly Elbow Ball Valve Gas Pipe Ball Valve Liquid Pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Low pressure gas pipe High pressure gas pipe Connection of Outside units A B A B C Master Slave1 Master Slave1 Slave2 2 Unit 3 Unit ARCNN21 ARCNN31 A Outside units Model Low Pressure Gas Pipe Liquid Pipe High Pressure Gas Pipe O D25 4 1 I D22 2 7 8 I D19 05 3 4 120 4 23 32 X2 O D19 05 3 4 I D1...

Page 13: ...f installing 3 indoor units No 1 2 3 O No 1 2 4 X No 1 3 4 X No 2 3 4 X CAUTION PRHR031 3 branches PRHR021 2 branches 1 2 1 3 2 PRHR041 4 branches 1 2 3 4 1st HR Unit 2nd HR Unit 1 2 3 4 B8 96k 28k BG 1 2 3 4 B8 76k 21k BH Installation of Outside Unit HR Unit Indoor Unit Refrigerant Pipe 3 pipes are connected to the HR unit from the outside unit classified into liquid pipe low pressure gas pipe an...

Page 14: ...ending portions as much as possible and make bending radius as big as possible 5 Always use the branch piping set shown below which are sold sep arately Outer diameter mm inch 6 35 1 4 9 52 3 8 12 7 1 2 15 88 5 8 19 05 3 4 22 2 7 8 25 4 1 28 58 1 1 8 31 8 1 1 4 34 9 1 3 8 38 1 1 1 2 41 3 1 5 8 44 45 1 3 4 53 98 2 1 8 Minimum thickness mm inch 0 8 1 32 0 8 1 32 0 8 1 32 0 99 5 128 0 99 5 128 0 99 5...

Page 15: ...at water source side will be mixed to make the product unusable Heat Source Water Refrigerant 1 Pollution of Heat source 2 Partially frozen 3 Damage Head loss of strainer on water pipe 96 50 45 30 15 0 0 30 60 90 120 150 0 60 120 180 240 300 60 50 45 30 15 0 60 192 g min kpa kpa g min Suggestion range Allowed range ARWB121DAS4 ARWB192DAS4 14 Always use a non oxidizing brazing material for brazing ...

Page 16: ...w switch to the water collection pipe system connecting to the outside unit Flow switch acts as the 1st protection device when the heat water is not supplied If a certain level of water does not flow after in stalling the flow switch an error sign of CH24 error will be displayed on the product and the product will stop operating When setting the flow switch it is recommended to use the product wit...

Page 17: ... unit connection pattern If available on site it use this size Otherwise it can t be increased Pattern 1 HR1 48k 48k 1 2 HR2 48k 48k 3 4 B Impossible installation Head branch pipe HR unit Upward out side unit total capacity Pipe diameter Pipe diameter when pipe length is 90m over to 1st branch HP TON Liquid mm inch Low pres sure gas pipe mm inch High pres sure gas pipe mm inch Liquid mm inch Low p...

Page 18: ... 12k 3 4 5 6 24k 7 24k 8 Pipe installation from outside units to HR units 3 pipes Low pressure Gas pipe High pressure Gas pipe Liquid pipe Pipe installation from HR units to indoor units 2 pipes Gas pipe Liquid pipe B A 1 HR1 Outside Unit Indoor Unit Y Branch pipe Low pressure Gas pipe High pressure Gas pipe Liquid pipe Gas pipe Liquid pipe Head Branch pipe Indoor Unit Keep the 40m distance from t...

Page 19: ...the outside unit is 10m 33ft or less Pipes between outside unit s are 2m 6 6ft or less 2m 6 6ft or less Pipes between outside unit s are 2m 6 6ft or longer Oil Trap Oil Trap Oil Trap 2m 6 6ft or less 2m 6 6ft orless 2m 6 6ft orless 0 2m 0 66ft ormore 2m 6 6ft or longer 2m 6 6ft or longer 2m 6 6ft or longer Oil trap application method between outside units Because of the possibility of oil being ac...

Page 20: ... into account the length of pipe and CF correction Factor value of indoor unit Total liquid pipe Ø25 4 mm 1 0 inch Additional charge kg Total liquid pipe Ø22 2 mm 7 8 inch Total liquid pipe Ø19 05 mm 3 4 inch Total liquid pipe Ø15 88 mm 5 8 inch Total liquid pipe Ø12 7 mm 1 2 inch Total liquid pipe Ø9 52 mm 3 8 inch Total liquid pipe Ø6 35 mm 1 4 inch Number of installed HR units CF value of indoo...

Page 21: ...g m3 0 028 lbs ft3 When the number of indoor units to be connected to the branch pipes is less than the number of branch pipes available for connec tion then cap pipes should be fitted to the surplus branches Fit branch pipe lie in a horizontal plane Pinched pipe B Horizontal plane View from point B in the direction of the arrow Y branch Header A B Facing upwards Facing downwards Within 3 Within 3...

Page 22: ... not drop for 24 hours the system passes the test If the pressure drops check where the nitrogen leaks For the test method refer to the following figure Make a test with the service valves closed Be also sure to pressurize liquid pipe gas pipe and high low pressure common pipe The test result can be judged good if the pressure has not be reduced after leaving for about one day after completion of ...

Page 23: ...ter may enter the pipe during work in the rainy season or over a long period of time After evacuating the system for 2 hrs give pressure to the system to 0 05MPa 7 3psi vacuum break with nitrogen gas and then evacuate it again with the vacuum pump for 1hr to 100 7kPa 14 6psi vacuum dry ing If the system cannot be evacuated to 100 7kPa 14 6psi within 2 hrs repeat the steps of vacuum break and its d...

Page 24: ...n part with steel plate so that the insulation material will not be caved in For this part use incom bustible materials for both insulation and covering Vinyl covering should not be used Inner wall concealed Outer wall Outer wall exposed Floor fireproofing Penetrating portion on fire limit and boundary wall Roof pipe shaft CAUTION Follow ordinance of your governmental organization for technical st...

Page 25: ... the designated power cable and connect firmly then secure to prevent outside pressure being exerted on the terminal block Use an appropriate screwdriver for tightening the terinal screws A screwdriver with a small head will strip the head and make proper tighterning impossible Over tightening the terminal screws may break them Control Box and Wiring Location Remove all of the screws at front pane...

Page 26: ...ture direct sun light rain water etc when proceeding with the wiring and connec tions The cable size is the minimum value for metal conduit wiring The power cord size should be 1 rank thicker taking into account the line voltage drops Make sure the power supply voltage does not drop more than 10 Specific wiring requirements should adhere to the wiring regulations of the region Power supply cords o...

Page 27: ...es Cable HR unit ELCB L L1 N L2 R S T R S T NOTE Field Wiring diagram is to be used as a guidelineonly Wiring should comply with applicable local and national codes ELCB must have function to prevent electrical short and over cur rent at the same time Use copper wires only Unit must be grounded in compliance with the applicable local and national codes ELCB and fuse breaker must install to the pow...

Page 28: ...momen tary blackout or the power goes on and off while the product is oper ating attach a reversed phase protection circuit locally Running the product in reversed phase may break the compressor and other parts 460V Example Connection of Communication Cable 1 Outdoor Unit 3Ø 460V WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communica...

Page 29: ...he compressor and other parts 3 Outdoor Units 3Ø 460V When the power source is connected In series between the units Communication Line 2 Wires Cable Power Line 3 Wires Cable Communication Line 3 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Power Line 2 Wires Cable Master Indoor Units Main Switch Slave1 Slave2 Pull Box Installer op...

Page 30: ... 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 Connection Communication Connection CAUTION It should be wiring power cables or communication cables to avoid interference with the oil level sensor Otherwise That oil level sensor would be operated abnormally Checking the se...

Page 31: ...ve in the factory For 2 branches PRHR021 For 3 branches PRHR031 For 4 branches PRHR041 Initial Setting 1 branches Connected 2 branches Connected 3 branches Connected 4 branches Connected 1 2 3 1 2 1 3 2 4 WARNING If you want to use a PRHR031 for 2 branches HR unit after clos ing the 3rd pipes set the dip switch for 2 branches HR unit If you want to use a PRHR041 for 3 branches HR unit after clos i...

Page 32: ...ction function the function that sets connection re lationship automatically between the indoor unit and HR unit 32 ENGLISH ARBLB03321 Models 413 16 1 4 390 15 11 32 I D19 05 3 4 I D19 05 3 4 I D19 05 3 4 I D15 88 5 8 I D12 7 1 2 I D12 7 1 2 I D12 7 1 2 I D12 7 1 2 I D12 7 1 2 I D12 7 1 2 I D12 7 1 2 74 2 29 32 70 2 3 4 70 2 3 4 I D15 88 5 8 I D15 88 5 8 I D25 4 1 I D25 4 1 I D25 4 1 O D25 4 1 80 ...

Page 33: ...f auto addressing for pipe detec tion Completion of auto pipe detection It is possible to be generated mode changing noise of heating and cooling which is normal There is no mode changing noise at normal operation Are the number of indoor units connected to the outside unit wiring and displayed one equal Reset the power of HR unit PCB Conﬁrm that the setting of No 2 3 of SW02M corresponds with the...

Page 34: ...R unit Zoning control is connecting 2 or more indoor units at one pipe of HR unit In case of Zoning control in order to set controls with multiple in door units connection uses the rotary switch Namely only the rotary switch changes from same valve set condition and set indoor units connection 1 On dip switch of the corresponding valves and sets the rotary switch at 0 2 Setting the number with tac...

Page 35: ... Confirm the power of whole system Indoor Unit Outside Unit is OFF otherwise turn off The communication cables connected to CEN A and CEN B terminal should be connected to central control of Outside Unit with care for their polarity A A B B Turn the whole system on Set the group and Indoor Unit number with a wired remote control To control several sets of Indoor Units into a group set the group ID...

Page 36: ...r more it may cause freeze and burst of the heat source water Anti freeze type Minimum temperature for anti freezing C F 0 5 23 10 14 15 5 20 4 25 13 Ethylene glycol 0 12 54 20 68 30 86 Propylene glycol 0 17 63 25 77 33 91 Methanol 0 6 43 12 54 16 61 24 75 30 86 CAUTION Request the function settings to the installation specialist during the outside unit installation When the function is not used s...

Page 37: ...CAUTION Ask an authorized technician to setting a function IDU capacity adjusting mode is set Setting the outside unit address How to set the mode Turn on DIP switch No 5 of the master unit PCB Use and button to mark Func in the 7 seg ment and press button Use and button to mark Fn5 in the 7 seg ment and press button Use and button to select one among 0 254 in the 7 segment and press button Outsid...

Page 38: ...ter supply system without operating the product Check whether outside unit inlet outlet ﬂow rate complies to the product speciﬁcation Standard Water volume is 96LPM based on 10HP and 196LPM based on 20HP Check the water supply temperature whether is OK After checking the normal condition of the water supply execute the test run of the product To prevent the freezing of the heat exchanger when the ...

Page 39: ...ng can be required depending on the oper ating condition water quality condition When cleaning the heat exchanger make sure to take parts out or lock the value so that chemical detergent does not penetrate into the pressure gauge etc When cleaning the heat exchanger check the connecting part of the water pipes prior to cleaning so that the chemical detergent does not leak After sufficiently mixing...

Page 40: ...tion failure error Master outside unit inverter DC link over voltage error Master outside unit inverter compressor overcurrent Master outside unit inverter compressordischarge temperature over rise Master outside unit high pressure over rise Air temperature sensor of indoor unit is open or short Inlet pipe temperature sensor of indoor unit is open or short Failing to receive wired remote controlle...

Page 41: ...de unit inverter compressor discharge temperature sensor disconnection or short circuit Master Outside Unit Low Pressure Sensor open or short Master Outside Unit High Pressure Sensor open or short Master Outside unit air temperature sensor disconnection or short circuit Master outside unit suction temperature sensor disconnection or short circuit Master out side unit IGBT temperature sensor discon...

Page 42: ...r unit air volume for facilitating calculation Limiting concentration 0 44kg m3 0 028lbs ft3 R410A Amount of additional replenished refrigerant Total amount of replenished refrigerant in refrigerant facility kg Note In case one refrigerant facility is divided into 2 or more refrigerant systems and each system is independent amount of replenished refrigerant of each system shall be adopted Amount o...

Page 43: ...ning effective to ventilation Indoor unit Pay a special attention to the place such as a basement etc where refrigerant can stay since refrigerant is heavier than air Central Control Use DDC Port Individual Control Use 220V Output Port Water In BMS Building Management System Water Out Solenoid Valve CN_18 220 V Out CN_22 to DDC PI 485 DDC BMS 1 L 2 N 3 L 4 N Main PCB Water In Water Out Solenoid Va...

Page 44: ...44 ENGLISH ...

Page 45: ...g contractor of your product as warranty service will be pro vided by them 2 If you have service issues that have not been addressed by the contractor please call 1 888 865 3026 CANADA Service call Number 888 LG Canada 888 542 2623 ...

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