LG Multi V Standard Gen 4 Series User manual

WALL-MOUNTED INDOOR UNIT
INSTALLATION MANUAL
Art Cool™Mirror Wall-Mounted
5,500 to 24,200 Btu/h
Standard Wall-Mounted
5,500 to 35,500 Btu/h
Art Cool™Gallery
9,600 and 12,300 Btu/h

The instructions included in this manual must be followed to prevent prod-
uct malfunction, property damage, injury, or death to the user or other
people. Incorrect operation due to ignoring any instructions will cause
harm or damage. A summary of safety precautions begins on page 4.
Do not throw away, destroy, or lose this manual.
Please read carefully and store in a safe place for future reference.
Content familiarity required for 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., 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.

3
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.
TABLE OF CONTENTS
Safety Instructions ....................................................................................................................................................................................4
Introduction...........................................................................................................................................................................................8-10
Unit Nomenclature...................................................................................................................................................................................11
R410A Refrigerant ...................................................................................................................................................................................12
General Data .......................................................................................................................................................................................13-19
Dimensions .........................................................................................................................................................................................20-23
Refrigerant Flow Diagrams................................................................................................................................................................24-26
General Installation Guidelines.........................................................................................................................................................27-33
Mounting .............................................................................................................................................................................................34-35
Refrigerant Piping ..............................................................................................................................................................................36-41
Piping Install .......................................................................................................................................................................................42-49
Refrigerant Piping Connections........................................................................................................................................................50-54
Final Install..........................................................................................................................................................................................55-58
Wiring ..................................................................................................................................................................................................59-74
Controls Setup....................................................................................................................................................................................75-81
Installation Checklist..........................................................................................................................................................................82-83

4
Multi V Wall-Mounted Indoor Unit
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.
The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incor-
rect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols below.
SAFETY INSTRUCTIONS
WARNING
Do not install, remove the unit by yourself (customer). Ask
the dealer or an authorized technician to install the unit.
Improper installation by the user may result in water leakage, re,
explosion, electric shock, physical injury or death.
For replacement of an installed unit, always contact a trained
LG service provider.
There is risk of re, electric shock, explosion, and physical injury or death.
The outdoor unit is shipped with refrigerant and the service
valves closed. Do not open service valves on the unit until
all non-condensibles have been removed from the piping
system and authorization has been obtained from the com-
missioning agent.
There is a risk of physical injury or death.
Do not run the compressor with the service valves closed.
There is risk of explosion, physical injury, or death.
Periodically check that the outdoor unit is not damaged.
There is risk of explosion, physical injury, or death.
Replace all control box and panel covers.
If cover panels are not installed securely, dust, water and animals may
enter the unit, causing re, electric shock, and physical injury or death.
Always check for system refrigerant leaks after the unit has
been installed or serviced.
Exposure to high concentration levels of refrigerant gas may lead to
illness or death.
Do not install the unit using defective hanging, attaching,
or mounting hardware.
There is risk of physical injury or death.
Wear protective gloves when handling equipment.
Sharp edges may cause personal injury.
Dispose the packing materials safely.
• 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
ame or extreme heat. Do not touch the unit with wet
hands.
There is risk of re, electric shock, explosion, and physical injury or death.
Install the unit considering the potential for earthquakes.
Improper installation may cause the unit to fall, resulting in physical
injury or death.
Do not change the settings of the protection devices.
If the pressure switch, thermal switch, or other protection device is
shorted and forced to operate improperly, or parts other than those
specied by LG are used, there is risk of re, electric shock, explosion,
and physical injury or death.
If the air conditioner is installed in a small space, take mea-
sures to prevent the refrigerant concentration from exceed-
ing safety limits in the event of a refrigerant leak.
Consult the latest edition of ASHRAE (American Society of Heating,
Refrigerating, and Air Conditioning Engineers) Standard 15. If the re-
frigerant leaks and safety limits are exceeded, it could result in personal
injuries or death from oxygen depletion
DANGER
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury.
Note:
This symbol Indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action that must not be performed.
TABLE OF SYMBOLS
INSTALLATION
DANGER
Don’t use or store ammable gas or combustibles near the unit.
There is risk of product failure, re, explosion, and physical injury or death.

5
Installation Manual
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©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
CAUTION
Be very careful when transporting the product.
• Do not attempt to carry the product without assistance.
• Some products use polypropylene bands for packaging. Do not use polypropylene bands to lift the unit.
• Suspend the unit from the base at specified positions.
• Support the unit a minimum of four points to avoid slippage from rigging apparatus.
SAFETY INSTRUCTIONS
INSTALLATION – CONTINUED
Note:
Properly insulate all cold surfaces to prevent “sweating.”
Cold surfaces such as uninsulated pipe can generate condensate that may
drip and cause a slippery oor condition and/or water damage to walls.
When installing the unit in a hospital, mechanical room, or
similar electromagnetic eld (EMF) sensitive environment,
provide sufcient protection against electrical noise.
Inverter equipment, power generators, high-frequency medical equip-
ment, or radio communication equipment may cause the air conditioner to
operate improperly. The unit may also affect such equipment by creating
electrical noise that disturbs medical treatment or image broadcasting.
Do not use the product for special purposes such as pre-
serving foods, works of art, wine coolers, or other precision
air conditioning applications. This equipment is designed to
provide comfort cooling and heating.
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 be 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 appropriate actions at the end of HVAC equipment life
to recover, recycle, reclaim or destroy R410A refrigerant ac-
cording to applicable U.S. Environmental Protection Agency
(EPA) rules.
Periodically check that the outdoor unit is not damaged.
There is a risk of equipment damage.
Install the unit in a safe location where no one can step on or
fall onto it. Do not install the unit with defective hanging,
attaching, or mounting hardware.
There is risk of unit and property damage.
Install the drain hose to ensure adequate drainage.
There is a risk of water leakage and property damage.
Don’t store or use ammable gas / combustibles near the
unit.
There is risk of product failure.
Always check for system refrigerant leaks after the unit has
been installed or serviced.
Low refrigerant levels may cause product failure
The unit is shipped with refrigerant and the service valves
closed. Do not open service valves on the unit until all
non-condensibles have been removed from the piping sys-
tem and authorization to do so has been obtained from the
commissioning agent.
There is a risk of refrigerant contamination, refrigerant loss and equip-
ment damage.

6
Multi V Wall-Mounted Indoor Unit
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.
SAFETY INSTRUCTIONS
WIRING
DANGER
High voltage electricity is required to operate this system.
Adhere to the National Electrical Codes and these
instructions when wiring.
Improper connections and inadequate grounding can cause accidental
injury or death.
Always ground the unit following local, state, and National
Electrical Codes.
Turn the power off at the nearest disconnect before servicing
the equipment.
Electric shock can cause physical injury or death.
Properly size all circuit breakers or fuses.
There is risk of re, electric shock, explosion, physical injury or death.
WARNING
The information contained in this manual is intended for use
by an industry-qualied, experienced, certied electrician
familiar with the U.S. National Electric Code (NEC) who is
equipped with the proper tools and test instruments.
Failure to 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 re, electric shock, physical injury or death.
Refer to local, state, and federal codes, and use power wires
of sufcient current capacity and rating.
Wires that are too small may generate heat and cause a re.
Secure all eld wiring connections with appropriate wire
strain relief.
Improperly securing wires will create undue stress on equipment power
lugs. Inadequate connections may generate heat, cause a re and
physical injury or death.
Properly tighten all power connections.
Loose wiring may overheat at connection points, causing a re, physical
injury or death.
Note:
Do not cut, lengthen or shorten the communications and
power cable between any dry contact unit and its connected
indoor unit. Do not install the unit in a location where the
communications and power cable cannot be safely and easily
connected between the two units. Do not allow strain on this
cable.
Poor cable connections can cause equipment malfunction.

7
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.
OPERATION
DANGER
Do not provide power to or operate the unit if it is ooded
or submerged.
There is risk of re, electric shock, physical injury or death.
Use a dedicated power source for this product.
There is risk of re, electric shock, physical injury or death.
Do not operate the disconnect switch with wet hands.
There is risk of re, electric shock, physical injury or death.
Periodically verify the hanging bolts and other hardware
securing the unit have not deteriorated.
If the unit falls from its installed location, it can cause property damage,
product failure, physical injury or death.
If refrigerant gas leaks out, ventilate the area before operat-
ing the unit.
If the unit is mounted in an enclosed, low-lying, or poorly ventilated area
and the system develops a refrigerant leak, it may cause re, electric
shock, explosion, physical injury or death.
SAFETY INSTRUCTIONS
Note:
Clean up the site after installation is nished, and check
that no metal scraps, screws, or bits of wiring have been left
inside or surrounding the unit.
Do not use this equipment in mission critical or special-
purpose applications such as preserving foods, works of art,
wine coolers or refrigeration. This equipment is designed to
provide comfort cooling and heating.
Provide power to the compressor crankcase heaters at least
six (6) hours before operation begins.
Starting operation with a cold compressor sump(s) may result in severe
bearing damage to the compressor(s). Keep the power switch on during
the operational season.
Do not block the inlet or outlet.
Unit may malfunction.
Securely attach the electrical cover to the indoor unit. Non-
secured covers can result in re due to dust or water in the
service panel.
Periodically verify the equipment mounts have not deterio-
rated.
If 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, re, electric shock, physical injury or death.
Avoid excessive cooling and periodically perform ventilation
to the unit.
Inadequate ventilation is a health hazard.
Do not touch the refrigerant piping during or after operation.
It can cause burns or frostbite.
Do not operate the unit with the panel(s) or protective
cover(s) removed; keep ngers and clothing away from
moving parts.
The rotating, hot, cold, and high-voltage parts of the unit can cause
physical injury or death.
Periodically check power cable and connection for damage.
Cable must be replaced by the manufacturer, its service agent, or similar
qualied persons in order to avoid physical injury and/or electric shock.
Do not open the inlet grille of the unit during operation.
Do not operate the unit with the panels or guards removed.
Do not insert hands or other objects through the inlet or
outlet when the unit is powered. Do not touch the electro-
static lter, if the unit includes one.
The unit contains sharp, rotating, hot, and high voltage parts that can
cause personal injury and/or electric shock.
Ensure no power is connected to the unit other than as
directed in this manual. Remove power from the unit before
removing or servicing the unit.
There is risk of unit failure, re, electric shock, physical injury or death.
Securely attach the electrical cover to the unit.
Non-secured electrical covers can result in burns or electric shock due to
dust or water in the service panel.
CAUTION
To avoid physical injury, use caution when cleaning or
servicing the air conditioner.

8
Multi V Wall-Mounted Indoor Unit
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.
INTRODUCTION
Gallery and Wall-Mounted Indoor
Units
This manual describes how to install LG Art Cool™ Gallery, Stan-
dard, and Art Cool™ Mirror Wall-Mounted indoor units (IDU) for Multi
V Variable Refrigerant Flow (VRF) heat pump and heat recovery
systems. Table 1 lists the available models. Refer to LG’s Multi V
Indoor Unit Engineering Manual for complete detailed engineering
data and selection procedures.
Safety
Safety of personnel is the primary concern during all procedures.
Read and understand the safety summary at the front of this manual.
Read and understand this installation procedure before beginning
installation. Use the appropriate tools and accessories during instal-
lation. Plan your work and do not work alone, if possible. Know how
to obtain emergency medical and fire fighting assistance.
Installation Personnel
This equipment is intended for installation by personnel trained
in the required construction, mechanical, electrical, and/or other
disciplines.
Applicable Codes
Personnel must be familiar with and follow the applicable national,
state, and/or local codes. In the event of a conflict between any
applicable code and the instructions in this manual, comply with the
applicable code.
WARNING
Installation work must be performed by trained personnel and in ac-
cordance with national wiring standards and all local or other applicable
codes. Improper installation can result in re, electric shock, physical
injury, or death and can prevent proper operation of the unit.
Note:
Please read all instructions before installing this product. Become familiar
with the unit’s components and connections, and the order of installation.
Incorrect installation can degrade or prevent proper operation.
Figure 1: Art Cool Gallery (Gen 4) Indoor Unit.
Figure 2: Standard Wall-Mounted Indoor Unit.
Figure 3: Art Cool Mirror Wall-Mounted Indoor Unit.

9
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.
Standard and Art Cool Mirror (Gen 4) Wall-Mounted Indoor Units
• Installation plate (One [1] Each)
• Type “A” screws (Five [5] Each)
• Plastic anchors (Five [5] Each)
• Type “B” screws (Two [2] Each)
Required Parts (factory provided)
Required Parts (field provided)
• Connecting cable (power and control)
• Pipes - vapor line and liquid line, with insulation
• Additional drain hose
Art Cool Gallery (Gen 4) Indoor Units
• Installation guide (One [1] Each)
• Type “A” screws (Four [4] Each)
• Plastic anchors (Four [4] Each)
INTRODUCTION
• Level
• JIS and other screwdrivers
• Electrical lineman pliers
• Electric drill
• Holesaw
• Drill
• Flaring tool set
• Tubing cutter
• Tube/pipe reamer
• Torque wrenches
• Allen wrench
• Gas-leak detector
• Thermometer
Required Tools (field provided)

10
Multi V Wall-Mounted Indoor Unit
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.
Unit Model Number
ART COOL Gallery (Gen 4)
ARNU093SFA4
ARNU123SFA4
Standard (Gen 4)
ARNU053SJA4
ARNU073SJA4
ARNU093SJA4
ARNU123SJA4
ARNU153SJA4
ARNU183SKA4
ARNU243SKA4
Standard (Gen 4) ARNU303SVA4
ARNU363SVA4
ART COOL Mirror (Gen 4)
ARNU053SJR4
ARNU073SJR4
ARNU093SJR4
ARNU123SJR4
ARNU153SJR4
ARNU183SKR4
ARNU243SKR4
Table 1: Multi V Wall-Mounted Indoor Units
INTRODUCTION

11
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.
UNIT NOMENCLATURE
ARN U05 3SJ A
Generation
2 = Second
4 = Fourth
A = Second, Revision A
Electrical Ratings
3 = 208–230V/60Hz/1Ph
05 = 5
07 = 7
09 = 9
12 = 12
15 = 15
18 = 18
24 = 24
28 = 28
30 = 30
36 = 36
42 = 42
48 = 48
54 = 54
76 = 76
96 = 96
Type
U = DC Inverter Heat Pump
Family
ARN = Multi V Indoor Unit
(Refrigerant R410A)
Feature
A, C, D, L, R = Standard
G = Low Static
U = Uncased
Indoor Unit Capacity (Mbh)
Model
4
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

12
Multi V Wall-Mounted Indoor Unit
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.
R410A REFRIGERANT
R410A Refrigerant
R410A refrigerant has a higher operating pressure in comparison to R22 refrigerant and, therefore, all piping system materials installed must
have a higher resisting pressure than the materials traditionally used in R22 systems.
R410A refrigerant is an azeotrope of R32 and R125, mixed at 50:50, so the ozone depletion potential (ODP) is 0.
WARNING
Do not place 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 heat piping more than necessary during installation. Piping may become soft and fail when pressurized.
• Do not use any piping that has not been approved for use in high-pressure refrigerant systems. Piping wall thickness must comply with
the applicable local, state, and federal codes for the 551 psi design pressure of R410A. Inadequate piping may fail when pressurized.
Refrigerant Safety
ASHRAE Standards 15-2010 and 34-2010 offer guidelines that address refrigerant safety and the maximum allowable concentration of
refrigerant in an occupied space. Refrigerant will dissipate into the atmosphere, but a certain volume of air is required for this to occur safely.
For R410A refrigerant, the maximum allowable concentration of refrigerant is twenty-six (26) lbs. per 1,000 cubic feet of an occupied space.
Buildings with twenty-four (24) hour occupancy allow half of that concentration.1
ASHRAE Standards 15 and 34 assume that if a system develops a leak, its entire refrigerant charge will dump into the area where the leak
occurs. To meet ASHRAE Standards 15 and 34, calculate the refrigerant concentration that may occur in the smallest room volume on the
system, and compare the results to the maximum allowable concentration number.1Also consult state and local codes in regards to refriger-
ant safety.
WARNING
Verify the maximum refrigerant concentration level in the space where the indoor unit will be mounted meets the concentration limit for the application.
1Information about ASHRAE Standard 15-2010/34-2010 and addenda current as of the date of this publication.

13
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.
Table 2: Art Cool Gallery (SF Frames) Indoor Unit General Data
ART COOLTM GALLERY
General Data
Model No. ARNU093SFA4 ARNU123SFA4
Cooling Mode Performance
Capacity (Btu/h) 9,600 12,300
Max. Power Input1(W) 35 35
H/M/L Power Input at Factory Default (W) 28 /16 / 10 32 / 20 /12
Heating Mode Performance
Capacity (Btu/h) 10,900 13,600
Max. Power Input1(W) 35 35
H/M/L Power Input at Factory Default (W) 28 /16 / 10 32 / 20 /12
Entering Mixed Air
Cooling Max (°F WB)276 76
Heating Min (°F DB)259 59
Unit Data
Refrigerant Type3R410A R410A
Refrigerant Control EEV EEV
Sound Pressure4dB(A) (H/M/L) 38 / 32 / 27 44 / 38 / 32
Net Unit Weight (lbs.) 33.1 33.1
Shipping Weight (lbs.) 38.1 38.1
Communication Cable5(No. x AWG) 2 x 18 2 x 18
Fan
Type Turbo Fan Turbo Fan
Quantity 1 1
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM) 286 / 222 / 148 328 / 272 / 212
Piping
Liquid Line (in., O.D.) 1/4 Flare 1/4 Flare
Vapor Line (in., O.D.) 1/2 Flare 1/2 Flare
Condensate Line (in., I.D.) 5/8 5/8
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
Multi V Wall-Mounted Indoor Unit
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.
Model Number Voltage
Range MCA MOP Rated Amps (A)
Power Supply Power Input (W)
Hz Volts Phase Max.
Cooling
Max.
Heating
H / M/ L at
Factory Default
SF Frames
ARNU093SFA4 187-253 0.4 15 0.3 60 208-230V 1 35 35 28 /16 / 10
ARNU123SFA4 32 / 20 /12
Table 3: Art Cool Mirror Wall-Mounted Indoor Unit Electrical Data.
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.
Electrical Data
ART COOL GALLERY

15
Installation Manual
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©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
ART COOL MIRROR
General Data
Table 4: Art Cool Mirror Wall-Mounted (SJ, SK Frames) Indoor Unit General Data.
Model No. ARNU053SJR4 ARNU073SJR4 ARNU093SJR4 ARNU123SJR4 ARNU153SJR4 ARNU183SKR4 ARNU243SKR4
Cooling Mode Performance
Capacity (Btu/h) 5,500 7,500 9,600 12,300 15,400 19,100 24,200
Max. Power Input1(W) 30 30 30 30 30 53 53
H/M/L Power Input at
Factory Default (W) 11 / 10 / 9 12 / 11 / 9 13 / 12 / 9 15 / 13 / 11 23 / 18 / 11 32 / 26 / 16 39 / 26 / 16
Heating Mode Performance
Capacity (Btu/h) 6,100 8,500 10,900 13,600 17,100 21,500 25,600
Max. Power Input1(W) 30 30 30 30 30 53 53
H/M/L Power Input at
Factory Default (W) 11 / 10 / 9 12 / 11 / 9 13 / 12 / 9 15 / 13 / 11 23 / 18 / 11 32 / 26 / 16 39 / 26 / 16
Entering Mixed Air
Cooling Max (°F WB)276 76 76 76 76 76 76
Heating Min (°F DB)259 59 59 59 59 59 59
Unit Data
Refrigerant Type3R410A R410A R410A R410A R410A R410A R410A
Refrigerant Control EEV EEV EEV EEV EEV EEV EEV
Sound Pressure4
dB(A) (H/M/L) 30 / 29 / 28 32 / 30 / 28 34 / 32 / 28 37 / 34 / 30 42 / 39 / 32 43 / 39 / 34 46 / 41 / 34
Net Unit Weight (lbs.) 20.2 20.2 20.2 20.2 20.2 29.5 29.5
Shipping Weight
(lbs.) 27.7 27.7 27.7 27.7 27.7 38.8 38.8
Communication
Cable5(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Cross Flow Cross Flow Cross Flow Cross Flow Cross Flow Cross Flow Cross Flow
Quantity 11111 1 1
Motor / Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L
(CFM) 240 / 230 / 208 254 / 240 / 208 275 / 254 / 208 300 / 254 / 240 371 / 336 / 240 494 / 424 / 371 537 / 449 / 371
Piping
Liquid Line (in., O.D.) 1/4 Flare 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 1/2 Flare 5/8 Flare
Condensate Line
(in., I.D.) 5/8 5/8 5/8 5/8 5/8 5/8 5/8
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
Multi V Wall-Mounted Indoor Unit
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.
Model Number Voltage
Range MCA MOP Rated Amps (A)
Power Supply Power Input (W)
Hz Volts Phase Max.
Cooling
Max.
Heating
H / M/ L at
Factory Default
SJ Frames
ARNU053SJR4
187-253
0.31
15
0.25
60 208-230V 1
30 30 11 / 10 / 9
ARNU073SJR4 0.31 0.25 30 30 12 / 11 / 9
ARNU093SJR4 0.31 0.25 30 30 13 / 12 / 9
ARNU123SJR4 0.31 0.25 30 30 15 / 13 / 11
ARNU153SJR4 0.31 0.25 30 30 23 / 18 / 11
SK Frames
ARNU183SKR4 187-253 0.65 15 0.52 60 208-230V 1 53 53 32 / 26 / 16
ARNU243SKR4 0.65 0.52 53 53 39 / 26 / 16
Table 5: Art Cool Mirror Wall-Mounted Indoor Unit Electrical Data.
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.
Electrical Data
ART COOL MIRROR

17
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.
Table 6: Standard Wall-Mounted (SJ Frames) Indoor Unit General Data.
Model No. ARNU053SJA4 ARNU073SJA4 ARNU093SJA4 ARNU123SJA4 ARNU153SJA4
Cooling Mode Performance
Capacity (Btu/h) 5,500 7,500 9,600 12,300 15,400
Max. Power Input1(W) 30 30 30 30 30
H/M/L Power Input at Factory
Default (W) 11 / 10 / 9 12 / 11 / 9 13 / 12 / 9 15 / 13 / 11 23 / 18 / 11
Heating Mode Performance
Capacity (Btu/h) 6,100 8,500 10,900 13,600 17,100
Max. Power Input1(W) 30 30 30 30 30
H/M/L Power Input at Factory
Default (W) 11 / 10 / 9 12 / 11 / 9 13 / 12 / 9 15 / 13 / 11 23 / 18 / 11
Entering Mixed Air
Cooling Max (°F WB)276 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) 30 / 29 / 28 32 / 30 / 28 34 / 32 / 28 37 / 34 / 30 42 / 39 / 32
Net Unit Weight (lbs.) 18.5 18.5 18.5 18.5 18.5
Shipping Weight (lbs.) 24.9 24.9 24.9 24.9 24.9
Communication Cable5(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Cross Flow Cross Flow Cross Flow Cross Flow Cross Flow
Quantity 1 1 1 1 1
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM) 240 / 230 / 208 254 / 240 / 208 275 / 254 / 208 300 / 254 / 240 371 / 336 / 240
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.) 5/8 5/8 5/8 5/8 5/8
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.
STANDARD WALL-MOUNTED
General Data

18
Multi V Wall-Mounted Indoor Unit
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.
Table 7: Standard Wall-Mounted (SK and SV Frames) Indoor Unit General Data.
Model No. ARNU183SKA4 ARNU243SKA4 ARNU303SVA4 ARNU363SVA4
Cooling Mode Performance
Capacity (Btu/h) 19,100 24,200 30,000 35,500
Max. Power Input1(W) 53 53 67.0 104.0
H/M/L Power Input at Factory
Default (W) 32 / 26 / 16 39 / 26 / 16 54 / 43 / 31 85 / 51 / 36
Heating Mode Performance
Capacity (Btu/h) 21,500 25,600 32,000 37,000
Max. Power Input1(W) 53 53 67.0 104.0
H/M/L Power Input at Factory
Default (W) 32 / 26 / 16 39 / 26 / 16 54 / 43 / 31 85 / 51 / 36
Entering Mixed Air
Cooling Max (°F WB)276 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) 43 / 39 / 34 46 / 41 / 34 49 / 44 / 42 52 / 47 / 43
Net Unit Weight (lbs.) 26.9 26.9 37 37
Shipping Weight (lbs.) 35.3 35.3 48 48
Communication Cable5(No. x AWG) 2 x 18 2 x 18 2 x 18 2 x 18
Fan
Type Cross Flow Cross Flow Cross Flow Cross Flow
Quantity 1 1 1 1
Motor/Drive Brushless Digitally Controlled / Direct
Airflow Rate H/M/L (CFM) 494 / 424 / 371 537 / 449 / 371 812 / 706 / 600 918 / 812 / 671
Piping
Liquid Line (in., O.D.) 1/4 Flare 3/8 Flare 3/8 Flare 3/8 Flare
Vapor Line (in., O.D.) 1/2 Flare 5/8 Flare 5/8 Flare 5/8 Flare
Condensate Line (in., I.D.) 5/8 5/8 5/8 5/8?
STANDARD WALL-MOUNTED
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.

19
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.
STANDARD WALL-MOUNTED
Electrical Data
Model Number Voltage
Range MCA MOP Rated Amps (A)
Power Supply Power Input (W)
Hz Volts Phase Max.
Cooling
Max.
Heating
H / M/ L at
Factory Default
SJ Frames
ARNU053SJA4
187-253
0.31
15
0.25
60 208-230 1
30 30 11 / 10 / 9
ARNU073SJA4 0.31 0.25 30 30 12 / 11 / 9
ARNU093SJA4 0.31 0.25 30 30 13 / 12 / 9
ARNU123SJA4 0.31 0.25 30 30 15 / 13 / 11
ARNU153SJA4 0.31 0.25 30 30 23 / 18 / 11
SK Frames
ARNU183SKA4 187-253 0.65 15 0.52 60 208-230 1 53 53 32 / 26 / 16
ARNU243SKA4 0.65 0.52 53 53 39 / 26 / 16
SV Frames
ARNU303SVA4 187-253 0.64 15 0.51 60 208-230 1 67.0 67.0 54 / 43 / 31
ARNU363SVA4 1.02 0.81 104.0 104.0 85 / 51 / 36
Table 8: Standard Wall-Mounted Indoor Unit Electrical Data.
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.

20
Multi V Wall-Mounted Indoor Unit
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.
Piping Access Hole
Attachment Hole
Attachment Hole
23-5/8 5-3/4
19-11/16
20-11/16
Air Outlet Grille
Air Outlet Grille
Air Outlet Grille
Air Inlet Grille
23-5/8
Unit: inches
Note: All measurements
have a tolerance of 1/4 in.
ART COOLTM GALLERY
External Dimensions
SF Frame
Figure 4: ARNU093SFA4, ARNU123SFA4 Dimensions.