LG Multi V Series Installation and operation manual

DUCTED INDOOR UNIT
ENGINEERING MANUAL
High Static Ducted
7,500 to 95,900 Btu/h
Low Static Ducted
7,500 to 24,000 Btu/h
Vertical / Horizontal Air Handler
12,000 to 54,000 Btu/h

For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice.
© LG Electronics U.S.A., Inc.
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information,
and other materials are the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc. only in confidence.
This document is for design purposes only.
A summary list of safety precautions is on page 3.
For more technical materials such as submittals, catalogs, installation,
owner’s, and service manuals, visit www.lghvac.com.

INTRODUCTION |3
Introduction
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
TABLE OF CONTENTS
Unit Nomenclature................................................................................. 4
LATS Overview ................................................................................... 5-6
Refrigerant Charge Worksheet.......................................................... 7-9
High Static Ducted Indoor Units ................................................. 10-124
Mechanical Specications ..................................................................11
General Data ................................................................................ 12-16
Electrical Data ................................................................................... 17
External Dimensions..................................................................... 18-21
Electrical Wiring Diagrams ........................................................... 22-29
Refrigerant Flow Diagrams........................................................... 30-31
External Static Pressure and Air Flow .......................................... 32-37
External Static Pressure Ranges.................................................. 38-42
Acoustic Data ............................................................................... 43-73
Capacity Tables .......................................................................... 74-123
Optional Accessories ....................................................................... 124
Low Static Ducted Indoor Units ................................................ 125-152
Mechanical Specications ............................................................... 126
General Data ................................................................................... 127
Electrical Data ................................................................................. 128
External Dimensions................................................................. 129-130
Electrical Wiring Diagrams ....................................................... 131-133
Refrigerant Flow Diagrams.............................................................. 134
External Static Pressure and Air Flow ...................................... 135-136
External Static Pressure Ranges..................................................... 137
Acoustic Data ........................................................................... 138-140
Capacity Tables ........................................................................ 141-152
Vertical / Horizontal Air Handler Units...................................... 153-189
Mechanical Specications ........................................................ 154-155
General Data ............................................................................ 156-157
Electrical Data ................................................................................. 158
External Dimensions................................................................. 159-160
Electrical Wiring Diagrams ....................................................... 161-164
Refrigerant Flow Diagrams.............................................................. 165
External Static Pressure and Air Flow ............................................. 166
External Static Pressure Ranges..................................................... 167
Heater Capacity Airow / Static Pressure Drop Factors .................. 168
Acoustic Data ........................................................................... 169-172
Capacity Tables ........................................................................ 173-188
Optional Accessories ....................................................................... 189
Application Guidelines............................................................... 190-202
Selecting the Best Location...................................................... 191-192
General Mounting..................................................................... 193-196
General Drain Piping Information ............................................. 197-198
Wiring Guidelines ..................................................................... 199-201
Wired Remote Controller Location .................................................. 201
Acronyms........................................................................................... 202
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This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
This symbol indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action must not be completed.
DANGER
CAUTION
TABLE OF SYMBOLS

4|INTRODUCTION
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI V Ducted Indoor Unit Engineering Manual
UNIT NOMENCLATURE
ARN U07 3TN C
Generation
2 = Second
4 = Fourth
A = Second, Revision A
Electrical Ratings
3 = 208–230V/60Hz/1Ph
05 = 5,000 Btu/h
07 = 7,000 Btu/h
09 = 9,000 Btu/h
12 = 12,000 Btu/h
15 = 15,000 Btu/h
18 = 18,000 Btu/h
24 = 24,000 Btu/h
28 = 28,000 Btu/h
30 = 30,000 Btu/h
36 = 36,000 Btu/h
42 = 42,000 Btu/h
48 = 48,000 Btu/h
54 = 54,000 Btu/h
76 = 76,000 Btu/h
96 = 96,000 Btu/h
Type
U = DC Inverter Heat Pump
Family
ARN = Multi V Indoor Unit
(Refrigerant R410A)
B8 = Ducted (high static)
BH = Ducted (high static)
CE = Floor Standing (small frame)
CF = Floor Standing (large frame)
L1 = Ducted (low static)
L2 = Ducted (low static)
L3 = Ducted (low static)
M2 = Ducted (high static)
M3 = Ducted (high static)
NJ = Vertical/Horizontal Air Handling Unit
NK = Vertical/Horizontal Air Handling Unit
SF = Wall Mounted / Art Cool™ Gallery
SJ = Wall Mounted / Art Cool Mirror
SK = Wall Mounted / Art Cool Mirror
SV = Wall Mounted / Standard
TT = 1-Way Ceiling Cassette
TU = 1-Way Ceiling Cassette
TS = 2-Way Ceiling Cassette
TM = 4-Way Ceiling Cassette
TN = 4-Way Ceiling Cassette
TQ = 4-Way Ceiling Cassette
TR = 4-Way Ceiling Cassette
Feature
A, C, L, R = Standard*
G = Low Static
U = Uncased
Indoor Unit Capacity
Model
4
*Plasma lter kit accessories are available separately. Always follow all local, state, and national building codes with the use of
this or any product.

INTRODUCTION |5
Introduction
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
LG Air Conditioner Technical Solution (LATS) Software
A properly designed and installed refrigerant piping system is critical to the optimal performance of LG air-conditioning systems. To assist
engineers, LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software—a total design solution for LG air conditioning
systems.
To reduce the risk of designing an improper applied system or one that will not operate correctly, LG requires that LATS software be used on all
projects.
Formats
LATS is available to LG customers in three user interfaces: LATS HVAC, LATS CAD2, and LATS REVIT. All three LATS formats are available
through www.myLGHVAC.com, or contact an LG Sales Representative.
LATS HVAC is a Windows®-based application that aids engineers in designing LG Variable Refrigerant Flow (VRF), Multi F / Multi F MAX,
Single-Zone, and Energy Recovery Ventilator (ERV) systems.
*Windows® is a registered mark of Microsoft® Corporation.
LATS CAD2 combines the LG LATS program with AutoCAD®
software**. It permits engineers to layout and validate LG Multi V
Variable Refrigerant Flow (VRF), Multi F / Multi F MAX, Single-Zone,
and Energy Recovery Ventilator (ERV) systems directly into CAD
drawings.
LATS Revit integrates the LG LATS program with Revit®software**.
It permits engineers to layout and validate Multi V VRF systems
directly into Revit drawings.
**AutoCAD® and Revit® are both registered marks of Autodesk, Inc.
Features
All LG product design criteria have been loaded into the program,
making LATS simple to use: double click or drag and drop the com-
ponent choices. Build systems in Tree Mode where the refrigerant
system can be viewed. Switch to a Schematic diagram to see the electrical and communications wiring.
LATS software permits the user to input region data, indoor and outdoor design temperatures, modify humidity default values, zoning, specify
type and size of outdoor units and indoor units, and input air flow and external static pressure (ESP) for ducted indoor units.
The program can also:
LG AIR CONDITIONER
TECHNICAL SOLUTION (LATS)
Features depend on which LATS program is being used, and the type of system being designed.
Figure 1:Example of LATS CAD2.
• Import building loads from a separate Excel file.
• Present options for outdoor unit auto selection.
• Automatically calculate component capacity based on design
conditions for the chosen region.
• Verify if the height differences between the various system
components are within system limits.
• Provide the correct size of each refrigerant piping segment and LG
Y-Branches and Headers.
• Adjust overall piping system length when elbows are added.
• Check for component piping limitations and flag if any parameters
are broken.
• Factor operation and capacity for defrost operation.
• Calculate refrigerant charge, noting any additional trim charge.
• Suggest accessories for indoor units and outdoor units.
• Run system simulation.

6|INTRODUCTION
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI V Ducted Indoor Unit Engineering Manual
LATS Generates a Complete Project Report
LATS software also generates a report containing project design parameters, cooling and heating design data, system component perfor-
mance, and capacity data. The report includes system combination ratio and refrigerant charge calculations; and provides detailed bill of
material, including outdoor units, indoor units, control devices, accessories, refrigerant pipe sizes segregated by building, by system, by pipe
size, and by pipe segments. LATS can generate an Excel GERP report that can imported into the LG SOPS pricing and ordering system.
Proper Design to Install Procedure
LG encourages a two report design-to-install-procedure. After the
design engineer determines building / zone loads and other details,
the engineer opens the LATS program and inputs the project’s infor-
mation. When the design is complete, the “Auto Piping” and “System
Check” functions must be used to verify piping sizes, limitations, and
if any design errors are present. If errors are found, engineers must
adjust the design, and run Auto Piping and System Check again.
When the design passes the checks, then the engineer prints out
a project “Shop Drawing” (LATS Tree Diagram) and provides it to
the installing contractor. The contractor must follow the LATS Tree
Diagram when building the piping system, but oftentimes the design
changes on the building site:
• Architect has changed location and/or purpose of room(s).
• Outdoor unit cannot be placed where originally intended.
• Structural elements prevent routing the piping as planned.
• Air conditioning system conflicts with other building systems
(plumbing, gas lines, etc.).
The contractor must mark any deviation from the design on the Shop Drawing, including as-built straight lines and elbows. This “Mark Up”
drawing must be returned to the design engineer or Rep, who must input contractor changes into the LATS file. (Copy the original LATS soft-
ware file, save and rename as a separate file, and modify all piping lengths by double-clicking on each length and editing information.) Like
the shop drawing, the Auto Piping and System Check must also be run on this new “As Built” drawing. The design engineer or Rep must then
provide the final As Built file to the contractor. The Mark Up version must be compared to the As Built version for:
• Differences in pipe diameter(s). If incorrect diameters have been installed, the piping must be changed out. If pipe diameters have changed,
check to see if Y-Branches will also need to be changed.
• Changes to outdoor unit and indoor unit capacities. Capacities changes may impact line length changes.
• Additional refrigerant charge quantity (“Trim Charge”). Trim charge will change if piping lengths and diameters change. The As Built version
must reflect installed piping lengths to ensure correct trim charge.
All documents submitted by the contractor, as well as the Shop Drawing and the As Built Drawing files must be provided for commissioning
purposes. Model and serial numbers for all system components must also be submitted. If the steps previously detailed are not followed,
and all documents are not provided to the commissioning agent, the project runs the risk of not being commissioned and voiding any limited
warranty LG offers on the equipment.
LG AIR CONDITIONER
TECHNICAL SOLUTION (LATS)
Figure 2:Example of a LATS Tree Diagram.

INTRODUCTION |7
Introduction
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Multi V 5 System R410A Refrigerant Charge Calculator (lbs.)
REFRIGERANT CHARGE WORKSHEET
1CF (Ref.) = Correction Factor for Refrigerant Charge. 2For refrigerant charge purposes, consider only the liquid line; ignore the vapor line(s).
System Tag or ID:
Job Name: __________________________________________
Project Manager: ____________________________________ Date: ______________
Line # Description Chassis I.D. Size Quantity CF (Ref.)1Total (lbs.)
1 Linear feet of 1/4" liquid line tubing2— — 0.015
2 Linear feet of 3/8" liquid line tubing2— — 0.041
3 Linear feet of 1/2" liquid line tubing2— — 0.079
4 Linear feet of 5/8" liquid line tubing2— — 0.116
5 Linear feet of 3/4" liquid line tubing2— — 0.179
6 Linear feet of 7/8" liquid line tubing2— — 0.238
7 Linear feet of 1" liquid line tubing2— — 0.323
8 Standard + Art Cool Mirror SJ, SK 5k to 15k 0.53
9 Standard + Art Cool Mirror SJ, SK 18k to 24k 0.62
10 Standard SV 30k to 36k 1.01
11 Art Cool Gallery SF 9k to 12k 0.22
12 1-Way Cassette TU 7k to 12k 0.44
13 1-Way Cassette TT 18k to 24k 0.64
14 2-Way Cassette TS 18k to 24k 0.75
15 4-Way 2' x 2' Cassette TR 5k to 7k 0.40
16 4-Way 2' x 2' Cassette TR 9k to 12k 0.55
17 4-Way 2' x 2' Cassette TQ 15k to 18k 0.71
18 4-Way 3' x 3' Cassette TN 7k to 24k 0.88
19 4-Way 3' x 3' Cassette TM 28k to 36k 1.08
20 4-Way 3’ x 3’ Cassette TM 42k to 48k 1.41
21 High Static Ducted BH 7k to 24k 0.57
22 High Static Ducted M2 7k to 24k 0.77
23 High Static Ducted M2 28k to 42k 1.15
24 High Static Ducted M3 28k to 54k 1.35
25 High Static Ducted B8 36k to 96k 2.20
26 Low Static Ducted, Low Static Ducted Bottom Return L1 5k to 9k 0.31
27 Low Static Ducted, Low Static Ducted Bottom Return L2 12k to 18k 0.42
28 Low Static Ducted, Low Static Ducted Bottom Return L3 21k to 24k 0.55
29 Vertical / Horizontal Air Handling Unit NJ 12k to 30k 1.04
30 Vertical / Horizontal Air Handling Unit NJ 36k 1.57
31 Vertical / Horizontal Air Handling Unit NK 42k to 54k 2.00
32 Floor Standing CE (U) 7k to 15k 0.37
33 Floor Standing CF (U) 18k to 24k 0.82
34 HRU: PRHR022A/023A, 032A/033A, 042A/043A, 063A, 083A — — 1.1
35 ADDITIONAL Refrigerant Charge Required (Sum of lines 1 – 34)
36 Outdoor Unit Factory Refrigerant Charge
36A ARUM072*TE5 72k 14.3
36B ARUM096*TE5 96k 23.2
36C ARUM121*TE5 121k 23.2
36D ARUM144*TE5 144k 26.5
36E ARUM168*TE5 168k 26.5
36F ARUM192*TE5 192k 30.9
36G ARUM216*TE5 216k 37.5
36H ARUM241*TE5 241k 37.5
37 Total ODU FACTORY Refrigerant Charge (Sum of factory refrigerant charges for all ODUs in the system, lines 36A -36H)
38 TOTAL SYSTEM CHARGE
Sum of Additional Refrigerant Charge Required (line 35) and Total ODU Factory Refrigerant Charge (line 37)

8|INTRODUCTION
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI V Ducted Indoor Unit Engineering Manual
Water IV System R410A Refrigerant Charge Calculator (lbs.)
REFRIGERANT CHARGE WORKSHEET
1CF (Ref.) = Correction Factor for Refrigerant Charge. 2For refrigerant charge purposes, consider only the liquid line; ignore the vapor line(s).
System Tag or ID:
Job Name: __________________________________________
Project Manager: ____________________________________ Date: ______________
Line # Description Chassis I.D. Size Quantity CF (Ref.)1Total (lbs.)
1 Linear feet of 1/4" liquid line tubing2— — 0.015
2 Linear feet of 3/8" liquid line tubing2— — 0.041
3 Linear feet of 1/2" liquid line tubing2— — 0.079
4 Linear feet of 5/8" liquid line tubing2— — 0.116
5 Linear feet of 3/4" liquid line tubing2— — 0.179
6 Linear feet of 7/8" liquid line tubing2— — 0.238
7 Linear feet of 1" liquid line tubing2— — 0.323
8 Standard + Art Cool Mirror SJ, SK 5k to 15k 0.53
9 Standard + Art Cool Mirror SJ, SK 18k to 24k 0.62
10 Standard SV 30k to 36k 1.01
11 Art Cool Gallery SF 9k to 12k 0.22
12 1-Way Cassette TU 7k to 12k 0.44
13 1-Way Cassette TT 18k to 24k 0.64
14 2-Way Cassette TS 18k to 24k 0.75
15 4-Way 2' x 2' Cassette TR 5k to 7k 0.40
16 4-Way 2' x 2' Cassette TR 9k to 12k 0.55
17 4-Way 2' x 2' Cassette TQ 15k to 18k 0.71
18 4-Way 3' x 3' Cassette TN 7k to 24k 0.88
19 4-Way 3' x 3' Cassette TM 28k to 36k 1.08
20 4-Way 3’ x 3’ Cassette TM 42k to 48k 1.41
21 High Static Ducted BH 7k to 24k 0.57
22 High Static Ducted M2 7k to 24k 0.77
23 High Static Ducted M2 28k to 42k 1.15
24 High Static Ducted M3 28k to 54k 1.35
25 High Static Ducted B8 36k to 96k 2.20
26 Low Static Ducted, Low Static Ducted Bottom Return L1 5k to 9k 0.31
27 Low Static Ducted, Low Static Ducted Bottom Return L2 12k to 18k 0.42
28 Low Static Ducted, Low Static Ducted Bottom Return L3 21k to 24k 0.55
29 Vertical / Horizontal Air Handling Unit NJ 12k to 30k 1.04
30 Vertical / Horizontal Air Handling Unit NJ 36k 1.57
31 Vertical / Horizontal Air Handling Unit NK 42k to 54k 2.00
32 Floor Standing CE (U) 7k to 15k 0.37
33 Floor Standing CF (U) 18k to 24k 0.82
34 HRU: PRHR022A/023A, 032A/033A, 042A/043A, 063A, 083A — — 1.1
35 ADDITIONAL Refrigerant Charge Required (Sum of lines 1 – 34)
36 Water-Source Unit Factory
Refrigerant Charge
ARW*072BAS4, ARW*096BAS4, ARW*121BAS4, ARW*144BAS4 10.42
ARW*072DAS4, ARW*096DAS4, ARW*121DAS4 10.42
ARW*144DAS4, ARW*192DAS4 11.66
37 Total WSU FACTORY Refrigerant Charge (Sum of factory refrigerant charges for all WSUs in the system)
38 TOTAL SYSTEM CHARGE
Sum of Additional Refrigerant Charge Required (line 35) and Total WSU Factory Refrigerant Charge (line 37)

INTRODUCTION |9
Introduction
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Multi V S System R410A Refrigerant Charge Calculator (lbs.)
REFRIGERANT CHARGE WORKSHEET
1CF (Ref.) = Correction Factor for Refrigerant Charge. 2For refrigerant charge purposes, consider only the liquid line; ignore the vapor line(s).
System Tag or ID:
Job Name: __________________________________________
Project Manager: ____________________________________ Date: ______________
Line # Description Chassis I.D. Size Quantity CF (Ref.)1Total (lbs.)
1 Linear feet of 1/4" liquid line tubing2— — 0.015
2 Linear feet of 3/8" liquid line tubing2— — 0.041
3 Linear feet of 1/2" liquid line tubing2— — 0.079
4 Linear feet of 5/8" liquid line tubing2— — 0.116
5 Linear feet of 3/4" liquid line tubing2— — 0.179
6 Linear feet of 7/8" liquid line tubing2— — 0.238
7 Linear feet of 1" liquid line tubing2— — 0.323
8 Standard + Art Cool Mirror SJ, SK 5k to 15k 0.53
9 Standard + Art Cool Mirror SJ, SK 18k to 24k 0.62
10 Standard SV 30k to 36k 1.01
11 Art Cool Gallery SF 9k to 12k 0.22
12 1-Way Cassette TU 7k to 12k 0.44
13 1-Way Cassette TT 18k to 24k 0.64
14 2-Way Cassette TS 18k to 24k 0.75
15 4-Way 2' x 2' Cassette TR 5k to 7k 0.40
16 4-Way 2' x 2' Cassette TR 9k to 12k 0.55
17 4-Way 2' x 2' Cassette TQ 15k to 18k 0.71
18 4-Way 3' x 3' Cassette TN 7k to 24k 0.88
19 4-Way 3' x 3' Cassette TM 28k to 36k 1.08
20 4-Way 3’ x 3’ Cassette TM 42k to 48k 1.41
21 High Static Ducted BH 7k to 24k 0.57
22 High Static Ducted M2 7k to 24k 0.77
23 High Static Ducted M2 28k to 42k 1.15
24 High Static Ducted M3 28k to 54k 1.35
25 High Static Ducted B8 36k to 96k 2.20
26 Low Static Ducted, Low Static Ducted Bottom Return L1 5k to 9k 0.31
27 Low Static Ducted, Low Static Ducted Bottom Return L2 12k to 18k 0.42
28 Low Static Ducted, Low Static Ducted Bottom Return L3 21k to 24k 0.55
29 Vertical / Horizontal Air Handling Unit NJ 12k to 30k 1.04
30 Vertical / Horizontal Air Handling Unit NJ 36k 1.57
31 Vertical / Horizontal Air Handling Unit NK 42k to 54k 2.00
32 Floor Standing CE (U) 7k to 15k 0.37
33 Floor Standing CF (U) 18k to 24k 0.82
34 HRU: PRHR022A/023A, 032A/ 033A, 042A/ 043A, 063A, 083A — — 1.1
35 ADDITIONAL Refrigerant Charge Required (Sum of lines 1 – 34)
36 Total ODU FACTORY Refrigerant Charge
(Choose One)
36A ARUN024GSS4 0
36B ARUN038GSS4 0
36C ARUN048GSS4 0
36D ARUN053GSS4 0
36F ARUN060GSS4 0
36G ARUB060GSS4 0
37 TOTAL SYSTEM CHARGE
Sum of Additional Refrigerant Charge Required (line 35) and Total ODU Factory Refrigerant Charge (from lines 36A through 36G)

CEILING-CONCEALED
DUCTED
HIGH STATIC
Mechanical Specifications on page 11
General Data on page 12
Electrical Data on page 17
External Dimensions on page 18
Electrical Wiring Diagrams on page 22
Refrigerant Flow Diagrams on page 30
External Static Pressure and Air Flow on page 32
External Static Pressure Ranges on page 38
Acoustic Data on page 43
Capacity Tables on page 74
Optional Accessories on page 124

HIGH STATIC | 11
Ducted High Static
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
DUCTED HIGH STATIC
Mechanical Specications
Casing
The case is designed to mount concealed above a finished ceiling.
Fan supply air is front horizontal with a dedicated rear horizontal
return. The unit is manufactured with coated metal. Cold surfaces
are covered with a coated polystyrene insulating material. The cold
surface areas of the case are covered externally with sheet insula-
tion made of Ethylene Propylene Diene Monomer (M-Class) (EPDM)
conforming to ASTM Standard D-1418. The case is provided with
hanger brackets designed to support the unit weight on four corners.
Hanger brackets have pre-punched holes designed to accept field
supplied, all-thread rod hangers.
Fan Assembly and Control
The unit has Sirocco fans made of high strength ABS GP-2200
polymeric resin. Fans are directly driven and mounted on a common
shaft. The fan motor is a Brushless Digitally Controlled (BLDC)
design with permanently lubricated and sealed ball bearings. The
fan motor includes thermal, overcurrent and low RPM protection.
The fan / motor assembly is mounted on vibration attenuating rubber
grommets. The fan impeller is statically and dynamically balanced.
The fan speed is controlled using a microprocessor based, direct
digital control algorithm that provides a high fan speed in cooling
thermal ON and low fan speed in cooling thermal OFF, high fan
speed in heating thermal ON and fan off in heating thermal OFF. The
fan speeds can be field adjusted between low, medium, and high
speeds and DIP switch settings will allow the fan to run constantly
during defrost or oil return modes. Each setting can be field adjusted
from the factory setting (RPM / ESP) to compensate for additional
resistance to airflow caused by field connected ductwork or other
airflow restricting devices.
Air Filter
Return air is filtered with a removable, washable filter with antifungal
treatment. MERV 13 filter modules with plenums available.
Microprocessor Controls
The unit is provided with an integrated microprocessor-based con-
troller. The controller is capable of performing functions necessary
to operate the system without the use of a wall-mounted controller.
A temperature thermistor is factory-mounted in the return air stream.
All unit operation parameters, excluding the unit operating schedule,
are stored in non-volatile memory resident on the unit microproces-
sor. Operating schedules are stored in select models of the optional,
wall-mounted, local, or central controller. The field supplied commu-
nication cable between the indoor unit(s) and outdoor unit is to be
a minimum of 18 AWG, 2-conductor, stranded, and shielded cable
(RS-485), terminated via screw terminals on the control boards.
The microprocessor control provides the following functions: auto
addressing, self-diagnostics, auto restart following power restoration,
test run, and will operate the indoor unit using one of five operating
modes:
1. Auto Changeover (Heat Recovery only)
2. Heating
3. Cooling
4. Dry
5. Fan Only
For Heat Recovery systems the Auto Changeover setting automati-
cally switches control of the indoor unit between cooling and heating
modes based on space temperature conditions.
For Heat Pump systems, heated or cooled air delivery is dependent
upon outdoor unit operating mode.
In Heating mode, the
microprocessor control
will activate the indoor unit
when indoor room
temperature falls below
setpoint temperature and
signals the outdoor unit to begin heating cycle. The indoor unit fan
operation is delayed until coil pipe temperature reaches 76ºF. Signif-
icant airflow is generated when pipe temperature reaches 80°F. In
lieu of factory return air thermistor, screw terminals on the micropro-
cessor circuit board accommodate various models of wall-mounted
local controllers and/or a wall-mounted remote temperature sensor.
The unit microprocessor is capable of accepting space temperature
readings concurrently or individually from either:
1. Wall-mounted wired controller(s)
2. Factory mounted return air thermistor or the optional wall-
mounted wired remote temperature sensor
A single indoor unit has the capability of being controlled by up to
two local wired controllers. The microprocessor controls space
temperature using the value provided by the temperature sensor
sensing a space temperature that is farthest away from the tem-
perature set-point. The microprocessor control provides a cooling or
heating mode test cycle that operates the unit for 18 minutes without
regard to the space temperature. If the system is provided with an
optional wall-mounted local or central controller, displayed diagnostic
codes are specific, alpha numeric, and provide the service technician
with a reason for the code displayed.
Condensate Lift/Pump
The indoor unit is provided with a factory installed and wired conden-
sate lift/pump capable of providing a minimum 27.5 inch lift from the
bottom exterior surface of the unit casing. The unit drain pan is pro-
vided with a secondary drain port/plug allowing the pan to be drained
for service. The lift pump comes with a safety switch that will shut off
indoor unit if condensate rises too high in the drain pan.
Condensate Drain Pan
The condensate drain pan is constructed of high impact polystyrene
resin (HIPS).
Coil
The indoor unit coil is constructed with grooved design copper tubes
with slit coil fins, two (2) to three (3) rows, nineteen (19) to
twenty-one (21) fins per inch.
Controls Features
• Auto changeover
(Heat Recovery only)
• Auto operation
• Auto restart
• External on/off control
• Dual thermistor control
• Dual setpoint control*
• Filter life display*
• Multiple auxiliary heater
applications*
• Group control
• External static pressure control
• Hot start
• Self diagnostics
• Timer (on / off)
• Weekly schedule
• Fan speed control
• Ventilation (outside air)
• Wi-Fi compatible
• Auto fan
• Leak detection
*To enable Generation 4 features, out-
door unit DIP Switch No. 3 must be set
to ON. Please refer to the Multi V IV,
Multi V Water IV, Multi V S Engineering
Manual for additional information.

12 |HIGH STATIC
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
DUCTED HIGH STATIC
General Data
BH Units
Model No. ARNU073BHA4 ARNU093BHA4 ARNU123BHA4 ARNU153BHA4 ARNU183BHA4 ARNU243BHA4
Cooling Mode Performance
Capacity (Btu/h) 7,500 9,600 12,300 15,400 19,100 24,200
Power Input1(W) 150 150 150 150 150 150
L/M/H Power Input at Factory Default (W) 49 / 52 / 58 52 / 58 / 67 58 / 67 / 78 58 / 78 / 90 78 / 90 / 103 103 / 117 / 132
Heating Mode Performance
Capacity (Btu/h) 8,500 10,900 13,600 17,100 21,500 27,300
Power Input1(W) 150 150 150 150 150 150
L/M/H Power Input at Factory Default (W) 49 / 52 / 58 52 / 58 / 67 58 / 67 / 78 58 / 78 / 90 78 / 90 / 103 103 / 117 / 132
Entering Mixed Air
Cooling Max. (°F WB) 76 76 76 76 76 76
Heating Min. (°F DB)259 59 59 59 59 59
Unit Data
Refrigerant Type3R410A R410A R410A R410A R410A R410A
Refrigerant Control EEV EEV EEV EEV EEV EEV
Sound Pressure4dB(A) (H/M/L) 34 / 33 / 32 35 / 34 / 33 37 / 35 / 34 39 / 37 / 34 40 / 38 / 37 42 / 41 / 40
Net Unit Weight (lbs.) 58.4 58.4 58.4 58.4 58.4 58.4
Shipping Weight (lbs.) 68.3 68.3 68.3 68.3 68.3 68.3
Communication Cable5
(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Sirocco Sirocco Sirocco Sirocco Sirocco Sirocco
Motor 1 1 1 1 1 1
Housing 2 2 2 2 2 2
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM)
Standard Mode 258 / 222 / 198 258 / 222 / 198 307 / 258 / 198 388 / 357 / 307 466 / 413 / 258 618 / 519 / 445
Airflow Rate H/M/L (CFM)
High Mode (Factory Set) 230 / 205 / 191 286 / 230 / 205 339 / 286 / 230 399 / 339 / 230 459 / 399 / 339 565 / 509 / 459
External Static Pressure (in. wg)
Standard Mode 0.23 0.23 0.23 0.23 0.23 0.23
External Static Pressure (in. wg)
High Mode (Factory Set) 0.31 0.31 0.31 0.31 0.31 0.31
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 Flare 5/8 Flare
Condensate Line (in., I.D.) 1 1 1 1 1 1
Table 1: Ducted High Static (BH Frame) Indoor Unit General Data.
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1Max. power input is rated at maximum setting value.
2Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Source Units produced after February 2019.
3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.

HIGH STATIC | 13
Ducted High Static
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
DUCTED HIGH STATIC
General Data
Model No. ARNU073M2A4 ARNU093M2A4 ARNU123M2A4 ARNU153M2A4 ARNU183M2A4
Cooling Mode Performance
Capacity (Btu/h) 7,500 9,600 12,300 15,400 19,100
Max Power Input1(W) 430 430 430 430 430
L/M/H Power Input at Factory Default (W) 21 / 29 / 38 21 / 29 / 38 25 / 34 / 43 25 / 34 / 43 34 / 43 / 67
Heating Mode Performance
Capacity (Btu/h) 8,500 10,900 13,600 17,100 21,500
Max Power Input1(W) 430 430 430 430 430
L/M/H Power Input at Factory Default (W) 21 / 29 / 38 21 / 29 / 38 25 / 34 / 43 25 / 34 / 43 34 / 43 / 67
Entering Mixed Air
Cooling Max. (°F WB) 76 76 76 76 76
Heating Min. (°F DB)259 59 59 59 59
Unit Data
Refrigerant Type3R410A R410A R410A R410A R410A
Refrigerant Control EEV EEV EEV EEV EEV
Sound Pressure4dB(A) (H/M/L) 38 / 37 / 36 38 / 37 / 36 38 / 37 / 36 38 / 37 / 36 39 / 38 / 37
Net Unit Weight (lbs.) 82.9 82.9 82.9 82.9 82.9
Shipping Weight (lbs.) 95.5 95.5 95.5 95.5 95.5
Communication Cable5(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Sirocco Sirocco Sirocco Sirocco Sirocco
Motor 11111
Housing 22222
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM)
Standard Mode 477 / 399 / 327 477 / 399 / 327 520 / 435 / 363 520 / 435 / 363 640 / 520 / 435
Airflow Rate H/M/L (CFM)
High Mode (Factory Set) 468 / 381 / 294 468 / 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.) 11111
Table 2: Ducted High Static (M2 Frame) Indoor Unit General Data.
M2 Units
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1Max. power input is rated at maximum setting value.
2Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Source Units produced after February 2019.
3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.

14 |HIGH STATIC
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Model No. ARNU243M2A4 ARNU283M2A4 ARNU363M2A4 ARNU423M2A4
Cooling Mode Performance
Capacity (Btu/h) 24,200 28,000 36,200 42,000
Max Power Input1(W) 430 430 430 430
L/M/H Power Input at Factory Default (W) 34 / 43 / 67 57 / 88 / 123 88 / 123 / 184 136 / 193 / 231
Heating Mode Performance
Capacity (Btu/h) 27,300 31,500 40,600 47,000
Max Power Input1(W) 450 450 450 450
L/M/H Power Input at Factory Default (W) 34 / 43 / 67 57 / 88 / 123 88 / 123 / 184 136 / 193 / 231
Entering Mixed Air
Cooling Max. (°F WB) 76 76 76 76
Heating Min. (°F DB)259 59 59 59
Unit Data
Refrigerant Type3R410A R410A R410A R410A
Refrigerant Control EEV EEV EEV EEV
Sound Pressure4dB(A) (H/M/L) 39 / 38 / 37 40 / 38 / 37 42 / 40 / 38 44 / 43 / 40
Net Unit Weight (lbs.) 82.9 86.2 86.2 86.2
Shipping Weight (lbs.) 95.5 99.2 99.2 99.2
Communication Cable5(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Sirocco Sirocco Sirocco Sirocco
Motor 1 1 1 1
Housing 2 2 2 2
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM)
Standard Mode 640 / 520 / 435 892 / 770 / 645 1,021 / 844 / 695 1,262 / 1,087 / 917
Airflow Rate H/M/L (CFM)
High Mode (Factory Set) 673 / 512 / 425 845 / 676 / 528 1,031 / 845 / 676 1,260 / 1,076 / 888
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.) 1111
DUCTED HIGH STATIC
General Data
M2 Units
Table 3: Ducted High Static (M2 Frame) Indoor Unit General Data, continued.
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1Max. power input is rated at maximum setting value.
2Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Source Units produced after February 2019.
3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.

HIGH STATIC | 15
Ducted High Static
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Model No. ARNU283M3A4 ARNU363M3A4 ARNU423M3A4 ARNU483M3A4 ARNU543M3A4
Cooling Mode Performance
Capacity (Btu/h) 28,000 36,200 42,000 48,100 54,000
Max Power Input1(W) 650 650 650 650 650
L/M/H Power Input at Factory Default (W) 60 / 83 / 109 75 / 107 / 161 75 / 107 / 161 75 / 107 / 172 172 / 215 / 260
Heating Mode Performance
Capacity (Btu/h) 31,500 40,600 47,000 54,200 61,400
Power Input1(W) 650 650 650 650 650
L/M/H Power Input at Factory Default (W) 60 / 83 / 109 75 / 107 / 161 75 / 107 / 161 75 / 107 / 172 172 / 215 / 260
Entering Mixed Air
Cooling Max. (°F WB) 76 76 76 76 76
Heating Min. (°F DB)259 59 59 59 59
Unit Data
Refrigerant Type3R410A R410A R410A R410A R410A
Refrigerant Control EEV EEV EEV EEV EEV
Sound Pressure4dB(A) (H/M/L) 40/39/37 41/39/37 41/39/37 42/39/37 44/43/42
Net Unit Weight (lbs.) 96.1 96.1 96.1 96.1 96.1
Shipping Weight (lbs.) 110.0 110.0 110.0 110.0 110.0
Communication Cable5(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Sirocco Sirocco Sirocco Sirocco Sirocco
Motor 11111
Housing 22222
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM)
Standard Mode 1,235 / 1,060 / 915 1,327 / 1,097 / 952 1,327 / 1,097 / 952 1,457 / 1,189 / 952 1,720 / 1,558 / 1,424
Airflow Rate H/M/L (CFM)
High Mode (Factory Set) 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.) 11111
Table 4: Ducted High Static (M3 Frames) Indoor Unit General Data.
DUCTED HIGH STATIC
General Data
M3 Units
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1Max. power input is rated at maximum setting value.
2Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Source Units produced after February 2019.
3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.

16 |HIGH STATIC
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Model No. ARNU363B8A4 ARNU423B8A4 ARNU483B8A4 ARNU763B8A4 ARNU963B8A4
Cooling Mode Performance
Capacity (Btu/h) 36,200 42,000 48,100 76,400 95,900
Power Input1(W) 800 800 800 800 800
L/M/H Power Input at Factory Default (W) 403 / 420 / 478 465 / 497 / 528 482 / 500 / 538 505 / 505 / 765 750 / 750 / 800
Heating Mode Performance
Capacity (Btu/h) 40,600 43,800 51,200 86,000 107,500
Power Input1(W) 800 800 800 800 800
L/M/H Power Input at Factory Default (W) 403 / 420 / 478 465 / 497 / 528 482 / 500 / 538 505 / 505 / 765 750 / 750 / 800
Entering Mixed Air
Cooling Max. (°F WB) 76 76 76 76 76
Heating Min. (°F DB)259 59 59 59 59
Unit Data
Refrigerant Type3R410A R410A R410A R410A R410A
Refrigerant Control EEV EEV EEV EEV EEV
Sound Pressure4dB(A) (H/M/L) 46 / 45 / 42 47 / 46 / 43 47 / 46 / 44 50 / 48 / 48 52 / 50 / 50
Net Unit Weight (lbs.) 192 192 192 192 192
Shipping Weight (lbs.) 222 222 222 222 222
Communication Cable5(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Sirocco Sirocco Sirocco Sirocco Sirocco
Motor 2 2 2 2 2
Housing 22222
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM)
Standard Mode 1,896 / 1,748 / 1,550 1,963 / 1,786 / 1,589 2,048 / 1,846 / 1,670 2,050 / 1,766 / 1,766 2,684 / 2,260 / 2,260
Airflow Rate H/M/L (CFM)
High Mode (Factory Set) 1,730 / 1,317 / 1,066 1,914 / 1,458 / 1,123 2,019 / 1,518 / 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 Flare 3/8 Flare 3/8 Flare 3/8 Flare 3/8 Flare
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 5: Ducted High Static (B8 Frames) Indoor Unit General Data.
DUCTED HIGH STATIC
General Data
B8 Units
EEV: Electronic Expansion Valve
Power wiring is field supplied and must comply with the applicable local and national
codes.
This unit comes with a dry nitrogen charge.
All capacities are net with a combination ratio between 95-105%.
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change
without notice. Current certified ratings are available at www.ahridirectory.org.
1Max. power input is rated at maximum setting value.
2Low ambient performance with LGRED° heat technology is included in Multi V 5 Air
Source Units produced after February 2019.
3Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or
destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F)
under section 608 of CAA.
4Sound Pressure levels are tested in an anechoic chamber under ISO Standard 3745.
5All communication cable to be minimum 18 AWG, 2-conductor, twisted, stranded, shielded
and must comply with applicable local and national codes. Ensure the communication
cable is properly grounded at the master outdoor unit only. Do not ground the ODU-IDU
communication cable at any other point.

HIGH STATIC | 17
Ducted High Static
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
DUCTED HIGH STATIC
Electrical Data
Table 6: 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
BH Units
ARNU073BHA4
208-230
1.32
15
1.06
60 208-230 1
150 150 49 / 52 / 58
ARNU093BHA4 1.32 1.06 150 150 52 / 58 / 67
ARNU123BHA4 1.32 1.06 150 150 58 / 67 / 78
ARNU153BHA4 1.32 1.06 150 150 58 / 78 / 90
ARNU183BHA4 1.32 1.06 150 150 78 / 90 / 103
ARNU243BHA4 1.32 1.06 150 150 103 / 117 / 132
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.

18 |HIGH STATIC
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
DUCTED HIGH STATIC
External Dimensions
BH Units
Figure 3: ARNU073~243BHA4 Dimensions.

HIGH STATIC | 19
Ducted High Static
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
DUCTED HIGH STATIC
External Dimensions
M2 Units
Figure 4: ARNU073~423M2A4 Dimensions.
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

20 |HIGH STATIC
MULTI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
DUCTED HIGH STATIC
External Dimensions
M3 Units
Figure 5: ARNU283~543M3A4 Dimensions.
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