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Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

GENERAL DATA

Electrical

−

High-Static M1/M2/M3/B8 Chassis

Table 10: Ducted High Static Indoor Unit Electrical Data.

Model

Voltage Range

MCA

MOP

Rated

Amps

(A)

Power Supply

Power Input (W)

Hz

Volts

Phase Max.Cooling Max.Heating

L / M / H at

Factory Default

M1 Units

ARNU073M1A4

208-230

2.0

15

1.6

60 208-230

1

190

190

25 / 30 / 39

ARNU093M1A4

2.0

1.6

190

190

26 / 32 / 40

ARNU123M1A4

2.0

1.6

190

190

31 / 38 / 46

ARNU153M1A4

2.0

1.6

190

190

46 / 53 / 67

ARNU183M1A4

2.0

1.6

190

190

55 / 63 / 85

ARNU243M1A4

2.0

1.6

190

190

58 / 74 / 91

M2 Units

ARNU073M2A4

208-230

2.9

15

2.3

60 208-230

1

430

430

21 / 29 / 38

ARNU093M2A4

2.9

2.3

430

430

21 / 29 / 38

ARNU123M2A4

2.9

2.3

430

430

25 / 34 / 43

ARNU153M2A4

2.9

2.3

430

430

25 / 34 / 43

ARNU183M2A4

2.9

2.3

430

430

34 / 43 / 67

ARNU243M2A4

2.9

2.3

430

430

34 / 43 / 67

ARNU283M2A4

2.9

2.3

430

430

57 / 88 / 123

ARNU363M2A4

2.9

2.3

430

430

88 / 123 / 184

ARNU423M2A4

2.9

2.3

430

430

136 / 193 / 231

M3 Units

ARNU283M3A4

208-230

3.1

15

2.5

60 208-230

1

650

650

60 / 83 / 109

ARNU363M3A4

3.1

2.5

650

650

75 / 107 / 161

ARNU423M3A4

3.1

2.5

650

650

75 / 107 / 161

ARNU483M3A4

3.1

2.5

650

650

75 / 107 / 172

ARNU543M3A4

3.1

2.5

650

650

172 / 215 / 260

B8 Units

ARNU363B8A4

208-230

6.5

15

5.2

60 208-230

1

800

800

403 / 420 / 478

ARNU423B8A4

6.5

5.2

800

800

465 / 497 / 528

ARNU483B8A4

6.5

5.2

800

800

482 / 500 / 538

ARNU763B8A4

6.5

5.2

800

800

505 / 505 / 765

ARNU963B8A4

6.5

5.2

800

800

750 / 750 / 800

MCA : Minimum Circuit Ampacity.
MOP : Maximum Overcurrent Protection.
Units are suitable for use on an electrical system where voltage supplied to unit terminals is within the listed range limits.
Select wire size based on the larger MCA value.
Instead of fuse, use the circuit breaker.
Max. power input is rated at maximum setting value.

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Содержание ARNU073L1G4

Страница 1: ...U363NJA4 ARNU423NKA4 ARNU483NKA4 ARNU543NKA4 Low Static Ducted Indoor Units ARNU073L1G4 ARNU093L1G4 ARNU123L2G4 ARNU153L2G4 ARNU183L2G4 ARNU243L3G4 High Static Ducted Indoor Units ARNU073M1A4 ARNU093M1A4 ARNU123M1A4 ARNU153M1A4 ARNU183M1A4 ARNU243M1A4 ARNU073M2A4 ARNU093M2A4 ARNU123M2A4 ARNU153M2A4 ARNU183M2A4 ARNU243M2A4 ARNU283M2A4 ARNU363M2A4 ARNU423M2A4 ARNU283M3A4 ARNU363M3A4 ARNU423M3A4 ARNU...

Страница 2: ...or proper installation For more technical materials such as submittals engineering databooks and catalogs visit www lghvac com For continual product development LG Electronics U S A Inc reserves the right to change specifications without notice LG Electronics U S A Inc This document as well as all reports illustrations data information and other materials are the property of LG Electronics U S A I...

Страница 3: ...hassis 27 Dimensions Low Static Ducted L1 L2 L3 Chassis 28 Dimensions Vertical Air Handler NJ Chassis 29 Dimensions Vertical Air Handler NK Chassis 30 Refrigerant Piping Diagrams 31 General Installation Guidelines 32 Installation 33 Install Ducted IDU Chassis 33 Indoor Unit Dimensions 34 Duct Connection Dimensions 35 Maintenance Clearances 36 General Mounting Vertical Horizontal Air Handler Units ...

Страница 4: ...y Packing materials such as nails and other metal or wooden parts may cause puncture wounds or other injuries Tear apart and throw away plastic packaging bags so that children may not play with them and risk suffocation and death Do not install the unit in any location exposed to open flame or extreme heat Do not touch the unit with wet hands There is risk of fire electric shock explosion and phys...

Страница 5: ...There is risk of property damage Do not make refrigerant substitutions Use R410A only If a different refrigerant is used or air mixes with original refrigerant the unit will malfunction and become damaged Do not install the unit in a noise sensitive area When connecting refrigerant tubing remember to allow for pipe expansion Improper piping may cause refrigerant leaks and system malfunction Take a...

Страница 6: ...o carefully read and follow all instructions in this manual can result in equipment malfunction property damage personal injury or death Ensure the unit is connected to a dedicated power source that provides adequate power If the power source capacity is inadequate or the electric work is not per formed properly it may result in fire electric shock physical injury or death Refer to local state and...

Страница 7: ... the base collapses the unit could fall and cause property damage or product failure Do not allow water dirt or animals to enter the unit There is risk of unit failure WARNING Do not allow water dirt or animals to enter the unit There is risk of unit failure fire electric shock physical injury or death Avoid excessive cooling and periodically perform ventilation to the unit Inadequate ventilation ...

Страница 8: ...ndoor Units Due to our policy of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp ...

Страница 9: ...uction mechanical electrical and or other disciplines Applicable Codes Personnel must be familiar with and follow the applicable national state and or local codes Pipes vapor line and liquid line with insulation 3 8 or 1 2 nuts flat washers and lock split washers 3 8 or 1 2 threaded hanger rods Insulated drain hose Additional drain hose Connecting cable power and control Level JIS screwdriver Elec...

Страница 10: ...B8A4 High Static Ducted M1 M2 M3 ARNU073M1A4 ARNU073M2A4 ARNU283M3A4 ARNU093M1A4 ARNU093M2A4 ARNU363M3A4 ARNU123M1A4 ARNU123M2A4 ARNU423M3A4 ARNU153M1A4 ARNU153M2A4 ARNU483M3A4 ARNU183M1A4 ARNU183M2A4 ARNU543M3A4 ARNU243M1A4 ARNU243M2A4 ARNU283M2A4 ARNU363M2A4 ARNU423M2A4 Low Static Ducted L1 L2 L3 ARNU073L1G4 ARNU093L1G4 ARNU123L2G4 ARNU153L2G4 ARNU183L2G4 ARNU243L3G4 Vertical Air Handler ARNU123...

Страница 11: ...h Static Ducted B8 High Static Ducted L1 Low Static Ducted L2 Low Static Ducted L3 Low Static Ducted NJ Vertical Air Handler NK Vertical Air Handler Electrical Ratings 3 208 230V 60Hz 1Phase Nominal Capacity Nominal cooling capacity in Btu h Type U Inverter Heat Pump Heat Recovery Family ARN Multi V Indoor Unit Refrigerant R410A 4 Feature C Plasma Filter A No Plasma Filter G Low Static 07 7 500 09...

Страница 12: ...epletion potential ODP is 0 WARNING Do not place the refrigerant cylinder in direct sunlight Refrigerant cylinder may explode causing severe injury or death Note Because R410A is a combination of R32 and R125 the required additional refrigerant must be charged in its liquid state If the refrigerant is charged in its gaseous state its composition changes and the system will not work properly Do not...

Страница 13: ...gh Mode Factory Set 361 279 211 376 296 229 392 328 262 570 392 328 638 556 392 703 638 556 External Static Pressure in wg Standard Mode 0 10 0 10 0 10 0 10 0 10 0 10 External Static Pressure in wg High Mode Factory Set 0 24 0 24 0 24 0 24 0 24 0 24 Piping Liquid Line in O D 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare 3 8 Flare Vapor Line in O D 1 2 Flare 1 2 Flare 1 2 Flare 1 2 Flare 1 2 Fl...

Страница 14: ...68 381 294 512 425 337 512 425 337 673 512 425 External Static Pressure in wg Standard Mode 0 20 0 20 0 20 0 20 0 20 External Static Pressure in wg High Mode Factory Set 0 24 0 24 0 24 0 24 0 24 Piping Liquid Line in O D 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare Vapor Line in O D 1 2 Flare 1 2 Flare 1 2 Flare 1 2 Flare 1 2 Flare Condensate Line in I D 1 1 1 1 1 Table 3 Ducted High Static M...

Страница 15: ...88 External Static Pressure in wg Standard Mode 0 20 0 20 0 20 0 20 External Static Pressure in wg High Mode Factory Set 0 24 0 24 0 24 0 24 Piping Liquid Line in O D 3 8 Flare 3 8 Flare 3 8 Flare 3 8 Flare Vapor Line in O D 5 8 Flare 5 8 Flare 5 8 Flare 5 8 Flare Condensate Line in I D 1 1 1 1 Table 4 Ducted High Static M2 Chassis Indoor Unit General Data continued EEV Electronic Expansion Valve ...

Страница 16: ... 1 250 1 017 837 1 449 1 191 918 1 449 1 191 918 1 482 1 191 918 1 744 1 614 1 482 External Static Pressure in wg Standard Mode 0 19 0 19 0 19 0 19 0 19 External Static Pressure in wg High Mode Factory Set 0 23 0 23 0 23 0 23 0 23 Piping Liquid Line in O D 3 8 Flare 3 8 Flare 3 8 Flare 3 8 Flare 3 8 Flare Vapor Line in O D 5 8 Flare 5 8 Flare 5 8 Flare 5 8 Flare 5 8 Flare Condensate Line in I D 1 ...

Страница 17: ...1 200 2 260 1 766 1 766 2 542 2 260 2 260 External Static Pressure in wg Standard Mode 0 35 0 35 0 35 0 59 0 59 External Static Pressure in wg High Mode Factory Set 0 70 0 70 0 70 0 87 0 87 Piping Liquid Line in O D 3 8 Brazed 3 8 Brazed 3 8 Brazed 3 8 Brazed 3 8 Brazed Vapor Line in O D 3 4 Brazed 3 4 Brazed 3 4 Brazed 3 4 Brazed 7 8 Brazed Condensate Line in I D 1 1 1 1 1 Table 6 Ducted High Sta...

Страница 18: ...270 230 200 320 250 200 360 310 250 450 360 310 530 450 360 710 570 430 Airflow Rate H M L CFM High Mode Factory Set 270 230 200 320 250 200 360 310 250 450 360 310 530 450 360 710 570 430 External Static Pressure in wg Standard Mode 0 0 0 0 0 0 External Static Pressure in wg High Mode Factory Set 0 1 0 1 0 1 0 1 0 1 0 1 Piping Liquid Line in O D 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare 1 4 Flare 3...

Страница 19: ...480 380 580 530 480 710 640 480 880 800 630 990 880 800 Airflow Rate H M L CFM High Mode Factory Set 530 480 380 580 530 480 710 640 480 880 800 630 990 880 800 External Static Pressure in wg Standard Mode 0 3 0 3 0 3 0 3 0 3 External Static Pressure in wg High Mode Factory Set 0 5 0 5 0 5 0 5 0 5 Piping Liquid Line in O D 1 4 Brazed 1 4 Brazed 3 8 Brazed 3 8 Brazed 3 8 Brazed Vapor Line in O D 1 ...

Страница 20: ...te H M L CFM High Mode Factory Set 1 250 1 100 1 000 1 400 1 260 1 000 1 475 1 400 1 260 External Static Pressure in wg Standard Mode 0 3 0 3 0 3 External Static Pressure in wg High Mode Factory Set 0 5 0 5 0 5 Piping Liquid Line in O D 3 8 Brazed 3 8 Brazed 3 8 Brazed Vapor Line in O D 5 8 Brazed 5 8 Brazed 5 8 Brazed Condensate Line in I D 1 1 1 EEV Electronic Expansion Valve Power wiring is fie...

Страница 21: ...M2A4 2 9 2 3 430 430 25 34 43 ARNU153M2A4 2 9 2 3 430 430 25 34 43 ARNU183M2A4 2 9 2 3 430 430 34 43 67 ARNU243M2A4 2 9 2 3 430 430 34 43 67 ARNU283M2A4 2 9 2 3 430 430 57 88 123 ARNU363M2A4 2 9 2 3 430 430 88 123 184 ARNU423M2A4 2 9 2 3 430 430 136 193 231 M3 Units ARNU283M3A4 208 230 3 1 15 2 5 60 208 230 1 650 650 60 83 109 ARNU363M3A4 3 1 2 5 650 650 75 107 161 ARNU423M3A4 3 1 2 5 650 650 75 1...

Страница 22: ...ating L M H at Factory Default L1 Units ARNU073L1G4 208 230 0 5 15 0 4 60 208 230 1 40 40 24 28 31 ARNU093L1G4 0 5 0 4 40 40 24 29 39 L2 Units ARNU123L2G4 208 230 1 0 15 0 76 60 208 230 1 85 85 29 34 41 ARNU153L2G4 1 0 0 76 85 85 34 41 56 ARNU183L2G4 1 0 0 76 85 85 41 56 71 L3 Units ARNU243L3G4 208 230 1 2 15 0 97 60 208 230 1 115 115 48 63 103 MCA Minimum Circuit Ampacity MOP Maximum Overcurrent ...

Страница 23: ...rames ARNU123NJA4 208 230 1 4 15 1 12 60 208 230 1 228 228 47 64 80 ARNU183NJA4 1 4 1 12 228 228 64 80 90 ARNU243NJA4 1 4 1 12 228 228 64 96 120 ARNU303NJA4 1 4 1 12 228 228 94 133 180 ARNU363NJA4 1 4 1 12 228 228 133 180 230 NK Frames ARNU423NKA4 208 230 2 25 15 1 8 60 208 230 1 366 366 186 215 260 ARNU483NKA4 2 25 1 8 366 366 186 264 330 ARNU543NKA4 2 25 1 8 366 366 264 312 370 MCA Minimum Circu...

Страница 24: ...icy of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp GENERAL DATA Dimensions High Static Ducted M1 Chassis ...

Страница 25: ...Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp GENERAL DATA Dimensions High Static Ducted M2 Chassis 7 7 32 6 19 32 5 15 32 7 8 27 1 4 24 3 8 7 7 8 10 11 16 9 5 16 9 3 32 10 11 16 16 9 16 50 17 32 27 32 2 1 32 8 21 32 9 1 4 10 13 32 14 9 32 54 7 32 49 9 32 47 15 32 49 3 16 47 1 2 3 9 16 27 9 16 26 5 32 1 25 32 27 1 16 ...

Страница 26: ...nglewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp GENERAL DATA Dimensions High Static Ducted M3 Chassis 12 21 32 12 27 32 12 3 4 14 27 32 14 3 16 11 7 16 27 3 16 24 3 8 7 3 8 6 27 32 5 1 2 1 3 32 50 9 16 54 11 32 49 1 4 3 5 8 13 16 2 7 32 6 5 32 6 3 4 7 15 16 12 23 32 28 9 16 47 19 32 49 3 16 27 19 32 26 3 16 2 1 32 27 1 8 47 9 16 ...

Страница 27: ...of continuous product innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp GENERAL DATA Dimensions High Static Ducted B8 Chassis ...

Страница 28: ...L2 22 1 16 L3 29 3 4 3 15 16 3 1 16 27 9 16 7 1 2 13 16 6 1 16 24 3 4 8 11 16 B A C L1 2 15 16 L2 3 1 16 L3 3 3 16 Drain Pipe Connection Vapor Pipe Connection Power Supply Connection Center of Gravity Unit inches 5 5 16 1 3 8 13 16 D Top Note All measurements have a tolerance of 1 4 in Top Top A B C D Supply Duct Connection Return Duct Connection Type Height Width Flange Width Flange Depth Height ...

Страница 29: ...assis 48 11 16 18 21 1 4 48 11 16 49 5 16 2 9 16 1 15 16 21 1 4 12 1 8 1 1 2 9 15 16 2 1 16 18 17 2 1 8 13 4 11 16 1 9 16 1 9 16 1 9 16 1 15 16 1 5 8 14 5 16 Unit inches Note All measurements have a tolerance of 1 4 in Drain connection for upflow application Drain connection for horizontal application Liquid pipe Vapor pipe 7 8 Wiring knockouts 7 8 Wiring knockouts 1 11 16 Wiring knockouts Supply ...

Страница 30: ...l Air Handler NK Chassis 55 3 16 25 21 1 4 55 3 16 55 13 16 2 9 16 21 1 4 12 1 8 1 1 2 16 15 16 2 1 16 25 24 2 3 16 20 4 11 16 1 9 16 1 9 16 1 9 16 1 15 16 1 5 8 14 1 4 Unit inches Note All measurements have a tolerance of 1 4 in Supply Air opening 7 8 Wiring knockouts SIDE VIEW 7 8 Wiring knockouts 1 11 16 Wiring knockouts Return Air opening FRONT VIEW Liquid pipe Vapor pipe Drain connection for ...

Страница 31: ...m Figure 6 High Static Ducted B8 Refrigerant Piping Diagram Heating Cooling Th1 Thermistor Return Air Th2 Thermistor Pipe In Th3 Thermistor Pipe Out EEV Electronic Expansion Valve Heat Exchanger Sirocco Fan Th3 Th2 EEV Filter Filter Th1 lndoor Unit Refrigerant Pipes to Outdoor Unit Flare Nut Liquid Line Vapor Line Flare Nut Heat Exchanger Sirocco Fan TH3 TH1 TH2 lndoor unit EEV Filter Check Valve ...

Страница 32: ...ing sound from the unit will not disturb occupants Include enough space for service access Include space for drainage to ensure condensate flows properly out of the unit when it is in cooling mode Use a level indicator to ensure the unit is installed on a level plane Note The unit may be damaged may malfunctioin and or will not operate as designed if installed in any of these conditions Do not ins...

Страница 33: ...ons cable away from high voltage wires and electromagnetic field EMF producing equipment Do not route power wiring and communications cables in the same conduit Maintain the minimum distance required between the communications cable and power wiring The minimum required space between the two is dependent on the voltage of the power wiring Refer to the appropriate Multi V Outdoor Unit Engineering M...

Страница 34: ...6 35 1 2 28 11 32 10 19 32 36 3 4 24 3 8 11 16 1 7 16 M2 86 54 7 32 27 1 4 10 11 16 50 17 32 24 3 8 11 16 1 7 16 M3 96 54 11 32 27 3 16 14 3 16 50 9 16 24 3 8 11 16 1 7 16 B8 192 61 5 8 27 1 8 18 1 8 4 11 16 63 7 8 22 7 8 1 3 16 1 3 16 Low Static Ducted Indoor Units L1 39 30 1 2 27 9 16 7 1 2 3 28 7 8 24 3 4 5 8 1 3 8 L2 51 38 3 8 27 9 16 7 1 2 3 36 3 4 24 3 4 5 8 1 3 8 L3 60 46 1 4 27 9 16 7 1 2 ...

Страница 35: ...19 32 1 21 32 13 16 Rear 12 21 32 47 9 16 7 8 No Flange B8 Flange 12 7 16 44 1 4 6 3 4 1 Rear 15 7 16 55 2 1 1 8 Low Static Ducted Indoor Units L1 Flange 5 7 8 26 13 16 5 8 Rear 6 1 8 26 3 4 No Flange Bottom 6 1 16 26 3 4 No Flange L2 Flange 5 7 8 33 13 16 13 16 5 8 Rear 6 1 8 33 11 16 3 4 No Flange Bottom 6 1 16 33 13 16 3 4 No Flange L3 Flange 5 7 8 41 3 4 13 16 5 8 Rear 6 1 8 41 11 16 3 4 No Fl...

Страница 36: ...ight End 12 14 18 Bottom 62 28 19 Low Static Ducted Indoor Units L1 Right End 10 12 8 Bottom 30 25 8 L2 Right End 10 12 8 Bottom 38 25 8 L3 Right End 10 12 8 Bottom 46 25 8 Table 15 Minimum Maintenance Clearances in C2 C1 C3 A3 A1 A2 Figure 15 High Static Ducted B8 Indoor Unit Maintenance Clearances Figure 16 Low Static Ducted L1 L2 L3 Indoor Unit Maintenance Clearances Figure 17 High Static Ducte...

Страница 37: ...essary Supports for air handler units must be located in or above the external condensate pan Specific Guidelines for Horizontal Left Installation Units must not be installed where the access panels face up or down nor where filter access is obstructed If the air handler unit is suspended use angled steel brackets with threaded rods as support To ensure proper condensate drainage the air handler u...

Страница 38: ...ion Standard Fibrous ducts and acoustical linings must follow National Fire Protection Association NFPA Standards 90A or 90B as tested by UL Standard 181 for Class 1 ducts Seal around the ducts to prevent air leaks At least ten 10 screws M4 25L At least six 6 screws M 4 25L More than 1 inch Figure 21 Attaching Ducts to the Vertical Horizontal Air Handler Unit Top Front Bottom Right Side Refrigeran...

Страница 39: ...1 Conn 2 L11 L18 Dia 3 Conn 2 L12 L15 High Static Ducted Indoor Units 7 18 M1 1 4 45 Flare 10 13 32 7 7 32 1 2 45 Flare 8 21 32 5 15 32 1 0 Plain 14 9 32 6 19 32 1 0 14 MPT 9 1 4 7 8 24 M2 1 4 45 Flare 10 13 32 7 7 32 5 8 45 Flare 8 21 32 5 15 32 1 0 Plain 14 9 32 6 19 32 1 0 14 MPT 9 1 4 7 8 7 18 M2 1 4 45 Flare 10 13 32 7 7 32 1 2 45 Flare 8 21 32 5 15 32 1 0 Plain 14 9 32 6 19 32 1 0 14 MPT 9 1...

Страница 40: ...ow necessary duct connections and maintenance access Measure the distance between the indoor unit and the outdoor unit Cut the pipes a little longer than measured distance 2A Remove the burrs Completely remove all burrs from pipe ends When removing burrs point the end of the copper pipe down to avoid introducing foreign materials into the pipe 2B Slide the flare nut onto the copper tube 3 Flare th...

Страница 41: ...ssible Problems Significant hydrolysis of refrigerant oil Refrigerant oil degradation Poor insulation of the compressor System does not operate properly EEVs capillary tubes are clogged Refrigerant oil degradation Poor insulation of the compressor System does not operate properly EEVs and capillary tubes become clogged Refrigerant gas leaks shortages Refrigerant oil degradation Poor insulation of ...

Страница 42: ...ation Auxiliary Valve Tape no air bubbles Do not block outlet side When pressure inside pipe is above atmospheric pressure pinhole leaks can occur Refrigerant Pipe Welding Point Regulator Nitrogen gas 3 0 psi or less Nitrogen Gas Tank Brazing Note It is imperative to keep the piping system free of contaminants and debris such as copper burrs slag or carbon dust during installation 1 All joints are...

Страница 43: ...te Do not use any other type of oil including traditional POE refrig eration oil as a lubricant Failure to follow this procedure may lead to restrictions in the refrigeration components Do not over tighten flare nuts Excessive tightening will cause fittings to crack Insulate Refrigerant Pipes Sufficiently insulate all cold surfaces to prevent moisture forming All pipes must be insulated and each p...

Страница 44: ...tion on the control panel end of the unit This connection may be used instead of using the condensate pump If the gravity drain is used disconnect the IDU condensate pump connector on the IDU PCB Verify the unit is installed with a slight cant toward the gravity drain connection Remove the rubber plug before connecting the condensate line to the indoor unit The gravity condensate line must be equi...

Страница 45: ...tandard sized traps are not sufficient Refer to the U Trap Specifications figure for the recommended condensate trap Supplementary drain with proper trap Field supplied kit can be used Drain for Horizontal Left Installations Figure 35 Vertical Horizontal Air Handler Unit U Trap Specifications U Trap B C A 2 9 16 inch B 2C C 2 x SP SP External Pressure in WG Ex External Pressure 0 4 in WG A 2 9 16 ...

Страница 46: ... all instruc tions in this manual can result in equipment malfunction or property damage Consider ambient conditions temperature direct sunlight inclement weather etc when selecting installing and connecting the power wiring Properly ground all outdoor units and indoor units Ground wiring must always be installed by a qualified technician Improperly ground wire can cause communication problems fro...

Страница 47: ...vicing and to prevent external forces from damaging the terminal block Copper Wire Terminate multiple power wires of the same gauge to both sides Do not terminate two wires on one side Do not terminate different gauge wires to a terminal block Power Wiring Communication Cable Connections Best practice dictates using solderless ring or fork terminals at all power wiring and communica tion cable ter...

Страница 48: ...s fuses overcurrent protection switches and wiring in accordance with local state and NEC regulations related to electrical equipment and wiring and following the instructions in this manual Generated overcurrent will include some amount of direct current Using an oversized breaker or fuse will result in electric shock physical injury or death Use the appropriate type of overcurrent protection Gen...

Страница 49: ...unit to A 3 and B 4 terminals on indoor units heat recovery units Insulation as required by NEC and local codes Rated for continuous exposure of temperatures up to 140 F Maximum allowable communication cable length is 3 281 feet HeatRecoveryUnit ForHeatRecovery SystemsOnly MasterOutdoorUnit IndoorUnit IndoorUnit IndoorUnit IndoorUnit IndoorUnit IndoorUnit WiredControllers WiredControllers WiredCon...

Страница 50: ...e indoor units use terminal block connections other indoor units use Molex connections See diagrams below for the two options Refer to the wiring diagram schematic found in the indoor unit itself or to the indoor unit wiring diagrams in the Engineering Manuals for more information NEVER splice cut or extend LG supplied cable with field provided cable Always include enough cable to cover distance b...

Страница 51: ...use 22 AWG 3 conductor twisted stranded unshielded All wiring must com ply with all applicable local and national codes From the master indoor unit to the slave indoor unit s daisy chain using 22 AWG 3 conductor twisted stranded unshielded Do not attach wire to 12VDC terminal to the slave indoor units All wiring must comply with all applicable local and national codes For indoor units with CN REMO...

Страница 52: ...Note When connecting the communications bus between the outdoor unit indoor unit s and heat recovery unit s it does not matter what physical path or route the wire takes The installer may use discretion when choosing the order the components are connected to the communications bus but must maintain the daisy chain and polarity configuration 1 Remove a knock out plug from the control box Remember t...

Страница 53: ...minal Block Power Input 208 230V 60 Hz 1 Phase 3 A 4 B Ground Figure 52 Location of Power Wiring and Communications Cable Terminals in the Vertical Horizontal Air Handler Unit WIRING Indoor Unit Communication Cable Connections Power Wiring Through Optional Access Hole Communication Cable Through Optional Access Hole Figure 50 Terminal Block in the High Static M1 M2 M3 B8 Chassis Ducted Indoor Unit...

Страница 54: ...en choosing the order the components are connected to the communica tions bus but must maintain the daisy chain and polarity configuration Failure to follow any of these power and communications wiring guidelines or instructions will cause communications errors and unit malfunction Don ts Never use wire caps and never splice communications cables Never connect zone controllers or other central con...

Страница 55: ...nections the Outdoor Unit Installation Manual for information regarding the outdoor unit and heat recovery unit wiring connections or review the wiring diagrams on the applicable units Cross connecting the 3 A and 4 B terminals will cause communications errors and system malfunction Field provided communication cable between Master ODU to IDUs HRUs to be 18 AWG 2 conductor twisted stranded shielde...

Страница 56: ...ulti V 5 air source units produced after February 2019 PRHR 3 Heat Recovery Units The PRHR 3A series of heat recovery units were released in June 2018 and are not automatically backwards compatible with all LG manu factured VRF air water source units The 3A heat recovery units will be compatible with many LG manufactured air source water source units if its Starting Production Date the Production ...

Страница 57: ...cing equipment Performing these actions will cause communication errors and unit malfunction Wired Controller Installation Ceiling Cassette indoor units can be used with various wired controllers optional sold separately Wired controllers include a sensor to detect room temperature To maintain comfort levels in the conditioned space the wired controller must be installed in a location away from di...

Страница 58: ...roduct innovation some specifications may change without notification LG Electronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING High Static Ducted M1 Chassis Figure 55 High Static Ducted M1 Chassis Wiring Diagram ...

Страница 59: ...oom air thermistor CN REMO Wired remote controller Wired remote control connection CN D PUMP Drain pump output AC output for drain pump CN 485 Communication Connection between indoor and outdoor units For Gen 4 Multi V ducted indoor units DIP Switches 1 2 6 through 8 must be set to OFF These DIP switches are used for other models To enable Generation 4 features outdoor unit DIP Switch No 3 must be...

Страница 60: ...ectronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING High Static Ducted M2 Chassis Figure 56 High Static Ducted M2 Chassis Wiring Diagram Optional Connections Figure 56 shows the control board for the M2 chassis Connect optional equipment to the control board as required for your system ...

Страница 61: ...Selects continuous fan for ducted indoor units 1 On Indoor unit fan will always operate at a set fan speed except when the system is off or the outdoor unit is in defrost mode when the outdoor unit is in defrost mode the fan will operate at super low fan speed 2 Off Indoor unit fan speed can be changed by on off Terminal Purpose Function CN POWER AC Power supply AC Power line CN MOTOR1 Fan motor o...

Страница 62: ...ectronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING High Static Ducted M3 Chassis Figure 57 High Static Ducted M3 Chassis Wiring Diagram Optional Connections Figure 57 shows the control board for the BR chassis Connect optional equipment to the control board as required for your system ...

Страница 63: ...or ducted indoor units 1 On Indoor unit fan will always operate at a set fan speed except when the system is off or the outdoor unit is in defrost mode when the outdoor unit is in defrost mode the fan will operate at super low fan speed 2 Off Indoor unit fan speed can be changed by on off Terminal Purpose Function CN POWER AC Power supply AC Power line CN MOTOR1 Fan motor output Motor output of BL...

Страница 64: ...ectronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING High Static Ducted B8 Chassis Figure 58 High Static Ducted B8 Chassis Wiring Diagram Optional Connections Figure 58 shows the control board for the B8 chassis Connect optional equipment to the control board as required for your system ...

Страница 65: ...or ducted indoor units 1 On Indoor unit fan will always operate at a set fan speed except when the system is off or the outdoor unit is in defrost mode when the outdoor unit is in defrost mode the fan will operate at super low fan speed 2 Off Indoor unit fan speed can be changed by on off Terminal Purpose Function CN POWER AC Power supply AC Power line CN MOTOR1 Fan motor output Motor output of BL...

Страница 66: ...lectronics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING Low Static Ducted L1 Chassis Figure 59 Low Static Ducted L1 Chassis Wiring Diagram Optional Connections Figure 59 shows the control board for the L1 chassis Connect optional equipment to the control board as required for your system ...

Страница 67: ...mode SW5 CONTINUOUS FAN Off On Selects continuous fan for ducted indoor units 1 On Indoor unit fan will always operate at a set fan speed except when the system is off or the outdoor unit is in defrost mode when the outdoor unit is in defrost mode the fan will operate at super low fan speed 2 Off Indoor unit fan speed can be changed by on off Terminal Purpose Function CN POWER AC Power supply AC P...

Страница 68: ...onics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING Low Static Ducted L2 L3 Chassis Figure 60 Low Static Ducted L2 L3 Chassis Wiring Diagram Optional Connections Figure 60 shows the control board for the L2 L3 chassis Connect optional equipment to the control board as required for your system ...

Страница 69: ...d by on off For Gen 4 Multi V ducted indoor units DIP switches 1 2 6 through 8 must be set to OFF These DIP switches are used for other models To enable Generation 4 features outdoor unit DIP Switch No 3 must be set to ON Please refer to the Multi V 5 Multi V Water IV Multi V S Engineering Manuals for additional information Terminal Purpose Function CN POWER AC Power supply AC Power line CN MOTOR1...

Страница 70: ...ics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING Vertical Air Handler NJ Chassis Figure 61 Vertical Air Handler NJ Chassis Wiring Diagram Optional Connections Figure 61 shows the control board for the NJ chassis Connect optional equipment to the control board as required for your system 03 2019 ...

Страница 71: ...is off or the outdoor unit is in defrost mode when the outdoor unit is in defrost mode the fan will operate at super low fan speed 2 Off Indoor unit fan speed can be changed by on off SW6 HEATER INTERLOCK Off On Selects heater interlock function for vertical air handler units 1 On Automatic heater will automatically operate during heating mode 2 Off Manual heater needs to be manually turned on dur...

Страница 72: ...ics U S A Inc Englewood Cliffs NJ All rights reserved LG is a registered trademark of LG Corp WIRING Vertical Air Handler NK Chassis Figure 62 Vertical Air Handler NK Chassis Wiring Diagram Optional Connections Figure 62 shows the control board for the NK chassis Connect optional equipment to the control board as required for your system 03 2019 ...

Страница 73: ...is off or the outdoor unit is in defrost mode when the outdoor unit is in defrost mode the fan will operate at super low fan speed 2 Off Indoor unit fan speed can be changed by on off SW6 HEATER INTERLOCK Off On Selects heater interlock function for vertical air handler units 1 On Automatic heater will automatically operate during heating mode 2 Off Manual heater needs to be manually turned on dur...

Страница 74: ...hod 1 configuration A wireless remote controller can be used at the same time as a wired controller A dry contact and central controller can be connected at the same time to a master indoor unit only A central controller can control all indoor units in a group by controlling the master unit of the group Slave indoor units cannot be individually controlled by the central controller If an error occu...

Страница 75: ...nd the Other as a Slave Group Control Method 2 Similar to Ground Control Method 1 but controls up to 16 indoor units with the MASTER wired remote controller group control Group Control Method 1 continued GND Signal 12V Master Slave Slave Slave Display Error Message Only Connect Signal and GND Wires Between Indoor Units Master Dry Contact Optional ACP 5 AC Smart 5 LGAP Network System Wireless Handh...

Страница 76: ... Control Method 1 except outside air units and standard indoor units must be grouped separately N M 16 because set temperatures are different Figure 67 Correct and Incorrect Group Control Configuration with Standard Indoor Units and Outside Air Units GND Signal 12V OAU Master OAU Slave Master Slave Master Master Display Error Message Display Error Message N M Dry Contact Optional ACP 5 AC Smart 5 ...

Страница 77: ...e Simple Remote Controller to master set the others to slave IDU function 7 All types of indoor units can be configured in a Group Control Method 4 configuration A wireless remote controller can be used at the same time as a Simple Remote Controller A dry contact and central controller can be connected at the same time to a master indoor unit only If an error occurs at an indoor unit the error cod...

Страница 78: ...liffs NJ All rights reserved LG is a registered trademark of LG Corp Figure 69 Remote Control Remote Control Figure below shows an example of a remote control configuration CONTROLS SETUP Remote Sensor Display Error Message Master Master AC Smart ACP Bacnet ACP LON Optional Other Building Mgmt System Optional LGMV LGAP Network System GND Signal 12V Dry Contact Optional ...

Страница 79: ...tened Refrigerant pipe is properly supported to keep lateral pressure off unit connections Refrigerant shutoff valves are full port design with integral Schrader port rated for R410A option Shutoff valves have the same internal pipe diameter as the connected pipe option Two shutoff valves were installed one 1 high pressure liquid one 1 low pressure vapor option Shutoff valves installed with Schrad...

Страница 80: ...nications cable terminals 3 A and 4 B Field provided communications cable is 18 2 twisted stranded and shielded All terminations are made at the terminal block No inline splices or wire caps are present Communications cable is plenum rated Communications cable shield is tied back and is grounded at only ONE end Wall Mounted Zone Controller Communications N A Not Complete Complete LG factory provid...

Страница 81: ...Who to call for assistance Freight Damage and Unit Replacements Your LG Manufacturer Representative Missing Parts Your LG Manufacturer Representative Freight Damage and Unit Replacements Your LG Manufacturer Representative Received Wrong Indoor Unit Model Your LG Manufacturer Representative Installation Startup and Commissioning Technical Assistance Your LG Manufacturer Representative For warranty...

Страница 82: ...ucted_IDU_05_20 IM_MultiV_Ducted_IDU_12_19 IM_MultiV_Ducted_IDU_5_16 IM MultiV DuctedIDU 08 14 LG Electronics USA Air Conditioning Technologies 4300 North Point Parkway Alpharetta Georgia 30022 www lghvac com 20001747 ISO 9001 2008 LG ELECTRONICS INC ...

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