LG ART COOL LA090HSV4 Installation and operation manual

3/4, 1, 1-1/2, and 2 Tons
Models:
LA090HSV4
LA120HSV4
LA180HSV4
LA240HSV3
SINGLE ZONE ART COOL™MIRROR
WALL MOUNTED ENGINEERING MANUAL

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.
Asummary list of safety precautions is on page 4.
For more technical materials such as submittals, catalogs, installation,
owner’s, and service manuals, visit www.lghvac.com.

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Introduction
About LG Electronics, Inc.
LG Electronics, Inc. is a global leader and technology innovator
in consumer electronics, mobile communications, and home
appliances. LG Electronics, Inc. comprises five business units—
Home Entertainment, Mobile Communications,Air Conditioning,
Business Solutions, and HomeAppliance. LG is one of the world’s
leading producers of flat panel televisions, audio and video products,
mobile handsets, air conditioners, and washing machines. LG’s
commercial air conditioning business unit was established in 1968
and has built its lineup of residential and commercial products to
include VRF, Multi F, duct-free split systems, packaged terminal air
conditioners (PTACs), and room air conditioners. In 2011, the air
conditioning and energy solutions business unit grew to include LED
lighting and solar products. For more information, visit www.lg.com.
Duct-Free Split Systems
LG HVAC systems offer a range of solutions that are cost efficient,
quiet and attractive. Duct-Free Split systems are “split” into indoor
and outdoor units, and provide a smart alternative to both central
HVAC and window-mounted air conditioners. These inverter heat
pump systems are available in a variety of configurations to suit dif-
ferent cooling and heating situations. Installation by a qualified HVAC
contractor is safe and easy – little to no duct work or sheet metal is
required.
Inverter Systems
LG Single ZoneArt Cool™Mirror Wall Mounted air-source systems
offer the opportunity to minimize ductwork in the same configuration.
The system offers zoning without the need for zone damper systems.
The LG Single Zone Inverter Wall Mount system’s advanced controls
provide exceptional building dehumidification and temperature
control, and can rapidly adapt system operating parameters to the
ever changing building load. The LG Single-ZoneArt Cool Mirror
Wall-Mounted system is easy to design, install, and maintain. The
modular design allows occupants to control their environmental
condition, providing individualized control of the setpoint temperature
and allowing occupants to condition only the occupied zones.
Quality Commitment
LG is committed to the success of Duct-Free Split projects. We
provide industry leading technical support during installation and
commissioning. LG offers a variety of classes designed for installers
and servicers to ensure that every system installation is completed
successfully.
Classes are conducted at LG’s training centers and in field locations
at various times throughout the year and upon special request.

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TABLE OF CONTENTS
INTRODUCTION.....................................................................................5
ARCHITECTURALAPPEAL..................................................................6
PRODUCT FEATURES AND BENEFITS...............................................8
UNIT NOMENCLATURE.........................................................................9
General Data...................................................................................10-11
Electrical Data...................................................................................... 12
Functions, Controls, and Options......................................................13
Outdoor Unit Dimensions...................................................................14
LSU090HSV4, LSU120HSV4............................................................14
LSU180HSV4, LAU240HSV3............................................................15
Indoor Unit Dimensions......................................................................16
LAN090HSV4, LAN120HSV4............................................................16
LAN180HSV4, LAN240HSV3............................................................17
ACOUSTIC DATA.................................................................................18
Refrigerant Flow Diagrams.................................................................20
LAN090HSV4, LSU090HSV4
LAN120HSV4, LSU120HSV4............................................................20
LAN180HSV4, LSU180HSV4
LAN240HSV3, LAU240HSV3............................................................21
Wiring Diagram....................................................................................22
LAN090HSV4, LAN120HSV4............................................................22
LAN180HSV4, LAN240HSV3............................................................23
LSU090HSV4, LSU120HSV4............................................................24
LSU180HSV4, LAU240HSV3............................................................25
PERFORMANCE DATA........................................................................27
Cooling Capacity............................................................................... 28
Heating Capacity...............................................................................30
Maximum Heating Capacity...............................................................32
Air Flow and Temperature Graphs.....................................................34
Equipment Selection Procedure........................................................36
LAN090HSV4, LSU090HSV4
LAN120HSV4, LSU120HSV4............................................................37
LAN180HSV4, LSU180HSV4
LAN240HSV3, LAU240HSV3............................................................38
Building Ventilation Design Guide.....................................................39
Placement Considerations............................................................41-43
REFRIGERANT PIPING DESIGN & LAYOUT
BEST PRACTICES...............................................................................44
Refrigerant Piping Design..................................................................45
Design Guideline Summary...............................................................45
Selecting Field-Supplied Copper Tubing...........................................45
Installation & Layout Best Practices.................................................47
Refrigerant Piping System Layout.....................................................47
Piping Connections............................................................................49
ELECTRICAL CONNECTIONS............................................................52
0HFKDQLFDO6SHFLÀFDWLRQV..................................................................53
Acronyms.............................................................................................54
TABLE OF SYMBOLS
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
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 should not be completed.
DANGER
CAUTION

INTRODUCTION
“Architectural Appeal” on page 6

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6 | INTRODUCTION
Art Cool™Mirror Wall Mounted Engineering Manual
Benefits of Single Zone
Art Cool Mirror Wall-Mounted System
• Available in 9,000 - 24,000 Btu/h
• Inverter technology
• All-season use - heat pump models for both
cooling and heating capabilities
• Operating range for outdoor units of 14°F to
118°F (DB) in cooling and -4°F to 65°F (WB)
in heating
• Operating range for indoor units of 53°F to
75°F (WB) in cooling and 60°F to 86°F (DB)
in heating
• Quiet operation inside and outside
• Duct-free split system
Convergence of Technological Innovation with Flexibility and Style
Single Zone Art Cool
Mirror Wall-Mounted
Systems
Choosing an LG Single-ZoneArt Cool
Mirror Wall-Mounted product provides
a system designer an edge to engineer
a system with individual control, and
design flexibility with advanced controls.
These single-zone systems are available
in a nominal capacity range of 3/4 to 2
tons. These are best suited for applica-
tions with zones that require heating or
cooling, such as residential, and small
business office buildings. Single-Zone
Art Cool Mirror Wall-Mounted out-
door and indoor units are available in
208–230V/60Hz/1Ph.
Adaptable and Flexible
Single-zone wall-mounted duct-free split
systems allow cooling or heating for the
entire residence or just a single room
without the need for invasive ductwork.
There is minimal renovation needed.
Long refrigerant piping lengths allow
for extra design flexibility in indoor unit
installation.
These units may be used for a number of
residential or commercial environments
such as:
• Older homes
• New home construction
• Office buildings
• Restaurants
• Hospitals / Medical facilities
• Schools
• Nursing homes
• Retail establishments
• House of worship
Inverter Technology
Inverter variable-speed duct-free split
systems are measurably quieter and
consume less energy than conventional
air conditioners. The inverter compressor
ramps up or down to match the required
room capacity and maintain the comfort
level. When the selected temperature
is reached, the inverter compressor
operates at low speed to maintain that
comfort level, thereby using less energy.
ARCHITECTURAL APPEAL

PRODUCT DATA
“Product Features and Benefits” on page 8
“Unit Nomenclature” on page 9
“General Data” on page 10
“Electrical Data” on page 12
“Outdoor Unit Dimensions” on page 14
“Indoor Unit Dimensions” on page 16
“Acoustic Data” on page 18
“Refrigerant Flow Diagram” on page 20
“Indoor Unit Wiring Diagram” on page 22
“Outdoor Unit Wiring Diagram” on page 24

8 | PRODUCT DATA
Art Cool™Mirror Wall Mounted Engineering Manual
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PRODUCT FEATURES AND BENEFITS
Single Zone Art Cool™
Mirror Wall Mount
Single zone systems are equipped with
inverter components that offer superior
load matching and long piping installation.
The product works for optimizing power
consumption in residential and small office
buildings. Utilizing multiple indoor wall mount
units each with custom temperature controls
allow for precise temperature settings in
each zone of the building. Single zone sys-
tems allow flexibility in interior design and
complement any decor.
Low Sound Levels
When outdoor units run at full load, they
have a quiet operating sound level. To pro-
mote a quiet, comfortable environment, the
LG single zone system indoor units operate
at sound levels as low as 23 dB(A) (19dB(A)
in sleep mode) and the outdoor units as low
as 45 dB(A) at full load.All rotating compo-
nents are soft-started by the controller using
digitally controlled inverters, which reduce
undesirable noise caused by fans and com-
pressors cycling on and off.
Comfort Control at Its
Best
Unlike traditional air conditioning control
systems, which use thermostatic controls to
maintain room temperatures, LG single zone
inverter controls continuously vary the indoor
unit fan speed and refrigerant flow.
LG single zone one-to-one systems continu-
ously measure the room temperatures and
adjust system operations accordingly to
maintain set temperature.
The outdoor unit responds by varying the
compressor speed and outdoor fan mo-
tors as needed to maintain system operat-
ing pressure.As a result, the single zone
systems deliver targeted space temperature
control.
Inverter Driven
The rotary (9k/12k Btu/h systems) and
twin-rotary (18k/24k Btu/h systems) com-
pressors are optimized to maximize com-
pressor efficiency, which reduces power
consumption and monthly utility bills. This
latest inverter technology allows single zone
system outdoor units to vary the compressor
motor shaft speed to deliver an appropriate
amount of cooling to the indoor unit. Precise
refrigerant volume delivery translates into
long periods with coil surface temperatures
below dew point and minimizes compressor
and fan component run time which may lead
to lower utility usage.
Simplified Installation
Cooling and heating applications that use
single zone systems simplify and reduce the
mechanical and control system design time.
The designer no longer has to be concerned
with interconnecting chilled and condenser
water piping, air-distribution duct systems,
matching and selecting chillers, towers,
pumps, coils, fans, air handlers, or Variable
Air Volume (VAV) boxes.
Operating Range
Single zone systems have a nominal capac-
ity range of 3/4 to 2 tons (depending on
outdoor/indoor units).
Outdoor unit operating ranges for single
zone systems:
Cooling: 14°F DB to 118°F DB
Heating: -4°F WB to 65°F WB
Installing an optional LowAmbient Wind
Baffle Kit will allow operation down to 0°F in
cooling mode for these single zone systems.
Compact Size
Single zone outdoor units have the following
footprints.
LSU090HSV4, LSU120HSV4
(WxHxD (in)) 30 5/16 x 21-1/2 x 11-5/16.
LSU180HSV4, LAU240HSV3
(WxHxD (in)) 34-1/4 x 31-1/2 x 12-5/8.
Fin Design with Gold-
Fin™ Coating
All single zone outdoor units are provided
with large surface coils made of copper
tubes with louvered aluminum fins designed
to maximize unit operating efficiency over a
wide range of ambient conditions.
Standard from the factory, every single
zone outdoor unit coil fin surface is
coated with LG’s exclusive GoldFin™
anti-corrosive coating designed to prevent
natural surface corrosion of the alumi-
num fins. This maintains heat transfer
properties of the coil for an extended time.
Ahydrophilic coating is applied to the
outdoor unit coil fin surface over the GoldFin
coating. This coating enhances the develop-
ment of heavier water droplets gathering on
the fin surface. As a result, the droplets roll
off the fin surfaces, delaying the point when
frost forms on the coil surface during heat-
ing operation. This coating also makes it
possible to easily clean the outdoor unit coil
using a mild soap.
Other Features
• Inverter variable speed compressor
• Jet Cool / Jet Heat
• Dehumidifying mode
• 3M™Micro Protection Filter
• Chaos Wind
• Auto restart
• Auto operation
• Self-cleaning indoor coil
• Condensate sensor connection
• Precision load matching
• MeetsAHRI 210/240

PRODUCT DATA | 9
Product Data
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UNIT NOMENCLATURE
Single Zone Wall Mount Indoor and Outdoor Units
LA N090 HSV 4
Type
N = Indoor Wall Mount Unit
U = Outdoor Heat Pump Unit
Family
LA=Art Cool Premier / Gallery / Mirror
LS= High Efficiency Wall Mount / Standard / Mega
Generation or Revision
1 = First
2 = Second
3 = Third
4 = Fourth
Nominal Capacity
(Nominal cooling capacity in Btu/h)
090/091 = 9,000
120/121 = 12,000
180/181 = 18,000
240 = 24,000
300/307 = 30,000
360 = 36,000
Indoor/Outdoor Product
HEV = Mega
HXV = Mega 115V
HYV =Art Cool Premier
HVP =Art Cool Gallery
HSV =Art Cool Mirror, High Efficiency
HV = Standard
HLV = Extended Pipe

10 | PRODUCT DATA
Art Cool™Mirror Wall Mounted Engineering Manual
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GENERAL DATA
Art Cool Mirror Pairing Table
The following table shows the available outdoor and indoor units, along with the factory provided controller.
Table 1: Single ZoneArt Cool Mirror Pairing Table
Outdoor Unit Model Indoor Unit Model Controller
LSU090HSV4
LSU120HSV4 LAN090HSV4 LAN120HSV4 AKB73835317
LSU180HSV4
LAU240HSV3 LAN180HSV4 LAN240HSV3 AKB73835320

PRODUCT DATA | 11
Product Data
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GENERAL DATA
Table 2: 6LQJOH=RQH$UW&RRO0LUURU6\VWHP6SHFL¿FDWLRQV
System Model Number (IDU/ODU) LA090HSV4 (LAN090HSV4/
LSU090HSV4) LA120HSV4
(LAN120HSV4/
LSU120HSV4) LA180HSV4
(LAN180HSV4/
LSU180HSV4) LA240HSV3
(LAN240HSV3/
LAU240HSV3)
Cooling Capacity (Min/Rated/Max) (Btu/h) 1,023 ~ 9,000 ~ 12,625 1,023 ~ 11,200 ~ 13,785 3,070 ~ 18,200 ~ 29,515 3,070 ~ 22,000 ~ 30,030
Cooling Power Input1(kW) 0.68 0.90 1.45 2.04
Heating Capacity (Min/Rated/Max) (Btu/h) 1,023 ~ 10,800 ~ 17,061 1,023 ~ 13,300 ~ 22,178 3,070 ~ 22,000 ~ 38,898 3,070 ~ 27,600 ~ 38,898
Heating Power Input1(kW) 0.70 1.0 1.76 2.67
COP 4.51 3.90 3.66 3.03
Maximum Heating Capacity (Btu/h)
Outdoor 17°F (WB)/Indoor 70°F (DB) 11,080 (103%) 13,500 (102%) 22,340 (102%) 28,020 (102%)
Outdoor 5°F (WB)/Indoor 70°F (DB) 9,570 (89%) 11,670 (88%) 19,300 (88%) 24,220 (88%)
Outdoor -4 °F (WB)/Indoor 70°F (DB) 8,310 (77%) 10,140 (76%) 16,760 (76%) 21,030 (76%)
EER 13.29 12.5 12.58 10.78
SEER 21.5 21.5 20.5 20.0
HSPF 10.8 11.0 9.7 10.0
Power Supply (V/Hz/Ø) 208-230/60/1
Outdoor Unit Operating Range2
Cooling (°F DB) 14 to 118
Heating (°F WB) -4 to 65
Indoor Unit Operating Range
Cooling (°F WB) 53 to 75
Heating (°F DB) 60 to 86
Indoor Temperature Setting Range
Cooling (°F) 64 to 86
Heating (°F) 60 to 86
Unit Data
Refrigerant Type3R410A
Refrigerant Control EEV
IDU Sound Pressure4dB(A) (H/M/L/Sleep) 38/33/23/19 39/33/23/19 45/40/35/29 45/40/35/29
ODU Sound Pressure4dB(A) 45 45 53 53
Unit Weight (lbs)
IDU (Net/Shipping) 24/29 24/29 32/39 32/39
ODU (Net/Shipping) 75/79 75/79 121/131 121/131
Power/Communication Cable5 (No. xAWG) 4 x 18
Compressor
Compressor Type (Qty) Single Rotary (1) Single Rotary (1) Twin Rotary (1) Twin Rotary (1)
Fan
IDU Type (Qty) Cross Flow (1)
ODU Type (Qty) Propeller (1)
Motor/Drive Brushless Digitally Controlled/Direct
Airflow Rate
IDU Max/H/M/L(CFM) 423/353/272/191 423/353/272/191 735/622/509/339 735/622/509/339
ODU Max (CFM) 1,165 1,165 2,119 2,119
Piping
Liquid Line (in, OD) 1/4 1/4 3/8 3/8
Vapor Line (in, OD) 3/8 3/8 5/8 5/8
Condensation Line (OD, ID) 27/32, 5/8 27/32, 5/8 27/32, 5/8 27/32, 5/8
Additional Refrigerant Charge (oz/ft) 0.22 0.22 0.38 0.38
Pipe Length6(Minimum/Maximum)(ft) 6.6/65.6 6.6/65.6 9.84/98.4 9.84/98.4
Piping Length6(no add’l refrigerant, ft) 41.0 41.0 24.6 24.6
Max Elevation Difference (ft) 32.8 32.8 49.2 49.2
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
1Power Input is rated at high speed.
2Optional LowAmbient Wind Baffle Kit allows operation down to 0°F in cooling mode.
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 power wiring/communication cables are field supplied and are to be minimum 18AWG, 4-conductor,
stranded, shielded and must comply with applicable local and national codes.
6Piping lengths are equivalent.
This unit comes with a dry helium charge.
This data is rated 0 ft above sea level with 24.6 of refrigerant line per indoor unit and a 0 ft level
difference outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF wet
bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 59ºF wet
bulb (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).

12 | PRODUCT DATA
Art Cool™Mirror Wall Mounted Engineering Manual
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Model Number Nominal Tons Compressor
Qty. Compressor (A) Cool/Heat Fan Qty. ODU Fan (A) IDU Fan (A) MCA(A) MOP(A)
LA090HSV4 3/4 1 8.3/8.3 1 0.40 0.40 10 15
LA120HSV4 1 1 8.3/8.3 1 0.40 0.40 10 15
LA180HSV4 1-1/2 1 14.6/14.6 1 0.25 0.40 19 25
LA240HSV3 2 1 14.6/14.6 1 0.25 0.40 19 25
Table 3: Single-ZoneArt Cool Mirror System Electrical Data Table.
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
MCA= Minimum CircuitAmpacity.
Maximum Overcurrent Protection (MOP) is calculated as follows: (Largest motor FLAx 2.25) + (Sum of
other motor FLA) rounded down to the nearest standard fuse size.
ELECTRICAL DATA

PRODUCT DATA | 13
Product Data
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FUNCTIONS, CONTROLS, OPTIONS
Table 4: Indoor Units—Functions, Controls and Options.
Indoor Unit Type LA090HSV4 LA120HSV4 LA180HSV4 LA240HSV3
$LUÀRZ
Air supply outlet 1111
Airflow direction (left/right) 5 Steps 5 Steps 5 Steps 5 Steps
Airflow direction (up/down) 6 Steps 6 Steps 6 Steps 6 Steps
Auto swing (left/right) ¥¥¥¥
Auto swing (up/down) ¥¥¥¥
Airflow steps (fan/cool/heat) 6 / 6 / 6 6 / 6 / 6 6 / 6 / 6 6 / 6 / 6
Auto swing ¥¥¥¥
Chaos wind (Auto wind) ¥¥¥¥
Jet-cool/heat ¥¥ ¥¥ ¥¥ ¥¥
Swirl wind XXXX
One touch soft air ¥¥¥¥
Air Purifying
Washable anti-fungal1¥¥¥¥
Deodorizing filter XXXX
Plasma2XXXX
Allergy free filter XXXX
3M Micro Protection filter2¥¥¥¥
Functions
Drain pump XXXX
E.S.P. control XXXX
Electric heater XXXX
High ceiling XXXX
Defrost ¥¥¥¥
Low ambient ¥ ¥ ¥ ¥
Hot start ¥¥¥¥
Self diagnostics ¥¥¥¥
ODU Drain Pan Heater o o PQSH1201 PQSH1201
Soft dry (dehumidification) ¥¥¥¥
Auto changeover ¥¥¥¥
Auto clean (coil dry) ¥¥¥¥
Auto restart ¥ ¥ ¥ ¥
Child lock XXXX
Forced operation ¥¥¥¥
Sleep mode ¥¥¥¥
Timer (24hr on/off) ¥¥¥¥
Weekly timer XXXX
Two thermistor control XXXX
Controllers
Wireless Remote Controller ¥¥¥¥
Simple Controller with Mode Selection oooo
Simple Controller without Mode Selection oooo
LG Programmable Thermostat oooo
Dry contact oooo
Central control (LGAP) oooo
PI 485 oooo
Special Function Kit
Zone control XXXX
CTIE XXXX
Electro thermostat XXXX
Wi-Fi Module (Option) XXXX
Water level sensor connection (for optionalAG-9300-LG) oooo
Wind baffle kit ZLABGP01A ZLABGP01A ZLABGP02A ZLABGP02A
1Primary washable filters.
2Secondary filters. ¥ 6WDQGDUGIHDWXUH
o = Optional accessory (must be purchased separately)
X = Not available
• When Dry Contact Mode active, Wi-Fi Function can not be used.
• When changing from Wi-Fi mode to dry contact mode, normal operation resumes in approximately 3 minutes.

14 | PRODUCT DATA
Art Cool™Mirror Wall Mounted Engineering Manual
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LSU090HSV4, LSU120HSV4
OUTDOOR UNIT DIMENSIONS
30-5/16
22 4-3/16
13-15/16
6-3/32
2-3/32
10-15/16 1
20-7/8
21-1/2
10-1/2
9-3/8
19-15/16
2-7/8
8-3/32
4
3
2
5
11-5/16 5-3/4
Ø18-5/16
Center of gravity
[Unit : inch ]
DischargeAir Grille

PRODUCT DATA | 15
Product Data
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LSU180HSV4, LAU240HSV3
OUTDOOR UNIT DIMENSIONS
34-1/4
21-1/2
12-19/32
14-3/16
6-5/16
2-3/16
13-1/8
31-1/2
30-7/8
15-7/16
13-3/4
21-1/8
3-1/8 2
Ø 20-7/8
Item No. Part Name
1 Discharge air grille
2
3
4
5
6
12-5/8
5-7/8
Center of gravity
[Unit : inch]

16 | PRODUCT DATA
Art Cool™Mirror Wall Mounted Engineering Manual
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INDOOR UNIT DIMENSIONS
LAN090HSV4, LAN120HSV4
Ø2-9/16
5-1/8 3-11/16
Right rear piping
Left rear piping
Place a level on raised tab
Unit Outline
8-1/2
6-15/16
17-3/8 17-3/8
5
Ø2-9/16
34-13/16 8-1/16
1-3/4
6-5/16
2-5/16
15/16
11-1/4
2
1-3/4
2-3/16
2-3/8
3
2
1
4
[Unit : Inch]
R
eturnAir
G
rille
for piping and cables

PRODUCT DATA | 17
Product Data
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INDOOR UNIT DIMENSIONS
LAN180HSV4, LAN240HSV3
3
2
1
40-9/16 9-11/16
1-13/16
12-3/4
2-1/16
1-3/4
2-9/16
2-1/16
Ø2-9/16
Right rear piping
Left rear piping
Measuring Tape
Measuring Tape Hanger
Place a level on raised tab
Unit Outline
18-1/8 22-7/16
8-1/8
4-1/8 2-11/16
2-1/8
Ø2-9/16
4
[Unit : Inch]
ReturnAir
G
rill
e

18 | PRODUCT DATA
Art Cool™Mirror Wall Mounted Engineering Manual
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Model Sound Pressure Levels (dB[A])
Cooling (Max) Heating (Max.)
LSU090HSV4 45 45
LSU120HSV4 45 45
LSU180HSV4 53 53
LAU240HSV3 53 53
Table 5: Outdoor UnitAcoustic Data
Figure 1: Outdoor Unit Sound Levels
3.28 ft
Center of
Outdoor Unit
Figure 2: Sound Pressure Levels for LSU090-120-180HSV4, LAU240HSV3 Outdoor Units.
• Measurements are taken 3.28 ft away from the front of the unit.
•Sound pressure levels are measured in dB(A) with a tolerance of
±3.
• Sound pressure levels are tested in an anechoic chamber under
ISO Standard 3745.
• Sound level will vary depending on a range of factors including the
construction (acoustic absorption coefficient) of a particular room in
which the unit was installed.
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshol d
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0dB = 20μPa)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
LSU090HSV4 LSU120HSV4 LSU180HSV4, LAU240HSV3
OUTDOOR UNIT ACOUSTIC DATA

PRODUCT DATA | 19
Product Data
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Figure 3: Indoor Unit Sound Levels
2.62 ft
3.28 ft
Microphone
Model Sound Pressure Levels (dB[A]) Cooling Heating
HMLHML
LAN090HSV4 38 33 23 38 33 23
LAN120HSV4 39 33 23 39 33 23
LAN180HSV4 45 40 35 45 40 35
LAN240HSV3 45 40 35 45 40 35
Table 6: Indoor UnitAcoustic Data
Figure 4: Sound Pressure Levels for LAN90-120-180HSV4 Indoor Units.
• Measurements are taken 3.28 ft away from the front of the unit.
•Sound pressure levels are measured in dB(A) with a tolerance of ±3.
• Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745.
• Sound level will vary depending on a range of factors including the construction (acoustic absorp-
tion coefficient) of a particular room in which the unit was installed.
INDOOR UNIT ACOUSTIC DATA
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Octave Band Sound Pressure Level (0dB = 20μPa)
Octave Band Center Frequency (Hz)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Octave Band Sound Pressure Level (0dB = 20μPa)
Octave Band Center Frequency (Hz)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Sound Pressure Level (0dB = 20μPa)
Octave Band Center Frequency (Hz)
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
LAN090HSV4 LAN120HSV4 LAN180HSV4, LAN240HSV3

20 | PRODUCT DATA
Art Cool™Mirror Wall Mounted Engineering Manual
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REFRIGERANT FLOW DIAGRAMS
LSU/LAN090HSV4, LSU/LAN120HSV4
Thermistor Description PCB Connector
TH1 Indoor air temperature thermistor CN-TH1 (Indoor)
TH2 Evaporator inlet temperature thermistor
TH3 Evaporator middle temperature thermistor CN-TH2 (Indoor)
TH4 Evaporator outlet temperature thermistor
TH5 Water level sensor (optional) CN-TH3 (Indoor)
TH6 Outdoor air temperature thermistor CN-TH1 (Outdoor)
TH7 Condensing temperature thermistor
TH8 Discharge pipe temperature thermistor CN-TH2 (Outdoor)
FIELD PIPING
(Ø1/ 4” Copper Tubing)
FIELD PIPING
(Ø 3/ 8” Copper Tubing)
M
M
He at
Exchanger
(Evaporator)
Heat
Exchanger
(Condenser)
Compressor
Accumulator
2-Way Valve
Reversing
Valve
Indoor Unit Outdoor Unit
: Cooling
: Heating
EEV
TH1
TH2
TH3
TH5
TH4
TH6
TH8
TH7
Liquid Side
Gas Side
3-
Way Valve