LG LSU243HLV Installation and operation manual

SINGLE ZONE WALL MOUNTED
EXTENDED PIPING ENGINEERING MANUAL
Single Zone Wall Mount Systems
2 to 2-3/4 Tons

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 4.
For more technical materials such as submittals, catalogs, installation,
owner’s, and service manuals, visit www.lghvac.com.

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. 3
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 Home Appliance. 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 (DFS) Technology
LG HVAC systems offer a range of solutions that are cost efficient,
quiet and attractive. Duct-Free Split (DFS) 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
different 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 Zone Wall Mounted Extended Piping air-source systems
offer the opportunity to minimize ductwork in the same configuration.
The systems offer zoning without the need for zone damper systems.
LG Single Zone Wall Mounted Extended Piping systems’ advanced
controls provide exceptional building dehumidification and tempera-
ture control, and can rapidly adapt system operating parameters
to the ever changing building load. LG Single Zone Wall Mounted
Extended Piping systems are 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.

4|INTRODUCTION
Single Zone High Wall Mounted Extended Piping 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.
TABLE OF CONTENTS
Introduction ..................................................................................................................................................................................................5
Architectural Appeal.....................................................................................................................................................................................6
Product Data............................................................................................................................................................................................7-24
Product Features and Benefits....................................................................................................................................................................8
Unit Nomenclature ......................................................................................................................................................................................9
General Data .......................................................................................................................................................................................10-11
Electrical Data ..........................................................................................................................................................................................12
Functions, Controls, Options.....................................................................................................................................................................13
Outdoor Unit Dimensions ..........................................................................................................................................................................14
Outdoor Unit Center of Gravity / Corner Weight.........................................................................................................................................15
Indoor Unit Dimensions.............................................................................................................................................................................16
Acoustic Data ......................................................................................................................................................................................17-18
Refrigerant Flow Diagrams...................................................................................................................................................................19-20
Indoor Unit Wiring Diagrams .....................................................................................................................................................................21
Outdoor Unit Wiring Diagrams..............................................................................................................................................................22-23
Accessories ..............................................................................................................................................................................................24
Performance Data..................................................................................................................................................................................25-37
Cooling Capacity..................................................................................................................................................................................26-27
Heating Capacity .................................................................................................................................................................................28-29
Maximum Heating Capacity..................................................................................................................................................................30-31
Air Flow and Temperature Distributions Graphs....................................................................................................................................32-37
Application Guidelines..........................................................................................................................................................................38-44
Equipment Selection Procedure ................................................................................................................................................................39
Building Ventilation Design Guide ........................................................................................................................................................40-41
Placement Considerations ...................................................................................................................................................................42-44
Refrigerant Piping Design & Layout Best Practices ............................................................................................................................45-53
Refrigerant Piping Design .........................................................................................................................................................................46
Installation & Best Layout Practices .....................................................................................................................................................48-52
Electrical Connections ..............................................................................................................................................................................53
Technical Data .......................................................................................................................................................................................54-56
Mechanical Specifications.........................................................................................................................................................................55
Acronyms..................................................................................................................................................................................................56
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

6|INTRODUCTION
Single Zone High Wall Mounted Extended Piping 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.
Benefits of Single Zone Wall
Mounted Extended Piping Systems
• Available from 22,000 - 33,000 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 75°F (WB)
in heating
• Operating range for indoor units of 53°F to
75°F in (WB) 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 Wall
Mounted Extended
Piping Systems
Single zone wall mounted extended piping
systems are among the industry’s best
air-conditioning units. Choosing an LG
single zone wall mount product provides
a system designer an edge to engineer a
system with individual control, and design
flexibility with advanced controls.
Single zone systems are available in a
nominal capacity range of 2 to 2-3/4 tons.
These are best suited for applications
with zones that require heating or cooling,
such as residential, and small business
office buildings. Single zone wall mount
outdoor and indoor units are available in
208–230V/60Hz/1Ph.
Adaptable and Flexible
Single zone wall mounted extended piping
systems allow cooling or heating for the
entire residence or just a single room
without the need for evasive ductwork.
There is no tearing down of walls or alter-
ing the homes appearance. Long refriger-
ant 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
• Place of worship
Inverter Technology
Inverter variable-speed DFS systems are
measurably quieter and consume less
energy than conventional air condition-
ers. 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 in-
verter compressor operates at low speed
to maintain that comfort level, thereby
using less energy.
ARCHITECTURAL APPEAL

“Product Features and Benefits” on page 8
“Unit Nomenclature” on page 9
“General Data” on page 10
“Electrical Data” on page 12
“Functions, Controls, Options” on page 13
“Outdoor Unit Dimensions” on page 14
“Outdoor Unit Center of Gravity / Corner Weight” on page 15
“Indoor Unit Dimensions” on page 16
“Acoustic Data” on page 17
“Refrigerant Flow Diagrams” on page 19
“Indoor Unit Wiring Diagram” on page 21
“Outdoor Unit Wiring Diagrams” on page 22
“Accessories” on page 24
PRODUCT DATA

8|PRODUCT DATA
Single Zone Wall Mounted Extended Piping 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.
Single Zone Systems
Single zone wall mounted extended piping
systems are equipped with inverter com-
ponents that offer superior load matching
and long piping installation. The product
works for optimizing power consumption in
residential and small office buildings. Utiliz-
ing multiple indoor wall mount units each
with custom temperature controls allow for
precise temperature settings in each zone
of the building. Single zone systems allow
flexibility in interior design and complement
any decor.
Low Sound Levels
When outdoor units operate fully loaded,they
have one of the quietest sound levels in
the industry. Sound is almost undetectable
during off-peak operation. To promote a
quiet, comfortable environment, the single
zone system indoor units operate at sound
levels as low as 37 dB(A) and outdoor units
as low as 55 dB(A) at full load. LG custom-
ers often ask if the outdoor unit is running
after commissioning is complete. All rotating
components are soft-started by the control-
ler using digitally controlled inverters, which
reduce undesirable noise caused by fans
and compressors cycling on and off.
Comfort Control at Its
Best
Tight temperature control through precise
load matching maximizes the time that
the indoor units remove moisture. Unlike
traditional air conditioning control systems,
which use thermostatic controls to maintain
room temperatures, LG single zone Inverter
controls continuously adjust the indoor unit
fan speed and refrigerant flow, indirectly pro-
viding lower and more consistent humidity
levels in the conditioned space. The longer
the indoor coil temperature is below the
dew-point of the room in conjunction with air
movement across the coil, the space humid-
ity level will vary little, compared to technolo-
gies that cycle fans and compressors on and
off multiple times per hour. The outdoor unit
responds by varying the compressor speed
and outdoor fan motors as needed to main-
tain system operating pressure. As a result,
the single zone systems deliver precise
space temperature control.
Inverter Driven
The twin rotary compressors are optimized
to maximize compressor 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. Occupants remain comfortable
while utility costs are reduced.
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 2 to 2-3/4 tons (depending on
outdoor/indoor units).
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 Low Ambient Wind
Baffle Kit will allow operation down to 0°F in
cooling mode for all single zone systems.
Compact Size
Single zone outdoor units have the following
footprints:
LSU243HLV, LSU303HLV, LSU363HLV
(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 aluminum fins. This main-
tains heat transfer properties of the coil for
an extended time.
A hydrophilic 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
heating 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
• Chaos Wind
• Auto restart
• Auto operation
• Self-cleaning indoor coil
• Condensate sensor connection
• Cooling only function
• Precision load matching
• Meets AHRI 210/240
PRODUCT FEATURES AND BENEFITS

PRODUCT DATA | 9
Product Data
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.
Single Zone Indoor and Outdoor Units
LS N243 HLV
Indoor/Outdoor Product
HLV - Extended Piping
243 = 22,000 303 = 30,000 363 = 33,000
Type
N = Indoor Wall Mount Unit
U = Outdoor Heat Pump Unit
Family
LS = Wall Mounted
Nominal Capacity
UNIT NOMENCLATURE
(Nominal cooling capacity in Btu/h)

10 |PRODUCT DATA
Single Zone Wall Mounted Extended Piping 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.
GENERAL DATA
Single Zone Wall Mounted Extended Piping System Pairing Table
The following tables show the available outdoor and indoor units, along with the factory provided controllers.
Table 1: Single Zone Wall Mounted Extended Piping System Pairing Table
Outdoor Unit Model Indoor Unit Model Controller
LSU243HLV
LSU303HLV
LSU363HLV
LSN243HLV
LSN303HLV
LSN363HLV
AKB74955602

PRODUCT DATA | 11
Product Data
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.
GENERAL DATA
Single Zone Wall Mounted Extended Piping Specications
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
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).
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.
This unit comes with a dry helium charge.
Power wiring to the ODU is field supplied, solid or stranded, and must comply with the applicable local
and national codes
1Power Input is rated at high speed.
2Low Ambient 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 1996.
5All power/communication cables to be minimum 18 AWG, 4-conductor, stranded, shielded and must
comply with applicable and national code.
6Piping lengths are equivalent.
Table 2: Single Zone Wall Mounted Extended Piping Specications.
System (Model) (Indoor Unit / Outdoor Unit) LS243HLV
(LSN243HLV/LSU243HLV)
LS303HLV
(LSN303HLV/LSU303HLV)
LS363HLV
(LSN363HLV/LSU363HLV)
Cooling Capacity1(Min/Rated/Max) (Btu/h) 3,070 ~ 22,000 ~ 29,515 3,070 ~ 30,000 ~ 34,000 3,070 ~ 33,000 ~ 34,000
Cooling Power Input1(Rated) (kW) 1.76 3.0 4.04
Heating Capacity (Min/Rated/Max) (Btu/h) 3,070 ~ 27,000 ~ 38,898 3,070 ~ 32,000 ~ 38,898 3,070 ~ 35,200 ~ 38,898
Heating Power Input1(Rated) (kW) 2.38 3.1 3.84
COP 11.34 10.32 9.17
Maximum Heating Capacity (Btu/h)
Outdoor 17°F (WB)/Indoor 70°F (DB) 27,410 (102%) 32,490 (102%) 35,740 (102%)
Outdoor 5°F (WB)/Indoor 70°F (DB) 23,690 (88%) 28,080 (88%) 30,890 (88%)
Outdoor 0°F (WB)/Indoor 70°F (DB) 22,090 (82%) 26,180 (82%) 28,800 (82%)
Outdoor -4°F (WB)/Indoor 70°F (DB) 20,580 (76%) 24,390 (76%) 26,820 (76%)
EER 12.50 10.00 8.18
SEER 21.50 19.00 17.50
HSPF 11.0 10.0 10.0
Power Supply V, Ø, Hz2208-230/60/1
Outdoor Unit Operating Range2
Cooling (°F DB) 14 to 118
Heating (°F WB) -4 to +65
Indoor Unit Operating Range2
Cooling (°F WB) 53 to 75
Heating (°F DB) 60 to 86
Unit Data
Refrigerant Type3R410A
Refrigerant Control EEV
IDU Sound Pressure Level dB(A) (H/M/L/SL)449/44/40/37 49/44/40/37 49/44/40/37
ODU Sound Pressure Level dB(A)455 55 55
Unit Weight (lbs.)
IDU (Net/Shipping) 39.7/45.2 39.7/45.2 39.7/45.2
ODU (Net/Shipping) 124.6/132.3 124.6/132.3 124.6/132.3
Power Wiring / Communications Cable (No. x AWG)24 x 18 4 x 18 4 x 18
Compressor
Compressor (Qty.) Twin Rotary (1) Twin Rotary (1) Twin Rotary (1)
Fan
IDU Type x Qty. Cross Flow Fan (1)
ODU Type x Qty. Propeller (1)
Motor / Drive Brushless Digitally Controlled/Direct
Airflow Rate
IDU (H / M / L [CFM]) 953/848/706/530 953/848/706/530 953/848/706/530
ODU (Max. [CFM]) 2,119 2,119 2,119
Piping
Liquid (in.) 3/8 3/8 3/8
Vapor (in.) 5/8 5/8 5/8
Condensate Drain O.D. / I.D. (in.) 27/32 / 5/8 27/32 / 5/8 27/32 / 5/8
Additional Refrigerant Charge (oz./ft.) 0.38 0.38 0.38
Pipe Length5(Minimum/ Maximum) (ft.) 9.8/164 9.8/164 9.8/164
Piping Length5(no add’l refrigerant, ft.) 24.6 24.6 24.6
Max. Elevation Difference (ft.) 98.4 98.4 98.4

12 |PRODUCT DATA
Single Zone Wall Mounted Extended Piping 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.
ELECTRICAL DATA
Model Number Nominal Tons Compressor Qty Compressor (A)
Cool / Heat Fan Qty Outdoor Unit Fan (A) MCA (A) MOP (A)
LS243HLV 2 1 14.6/14.6 1 0.25 19 30
LS303HLV 2-1/2 1 14.6/14.6 1 0.25 19 30
LS363HLV 2-3/4 1 14.6/14.6 1 0.25 19 30
Table 3: Single Zone Wall Mounted Extended Piping Electrical Data
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
RLA = Rated Load Amps.
MCA = Minimum Circuit Ampacity.
Maximum Overcurrent Protection (MOP) is calculated as follows:
(Largest motor FLA x 2.25) + (Sum of other motor FLA) rounded down
to the nearest standard fuse size.
Recommended fuse size: 25A.

PRODUCT DATA | 13
Product Data
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.
FUNCTIONS, CONTROLS, OPTIONS
Table 4: Indoor Units—Functions, Controls and Options.
Indoor Unit Type LS243HLV LS303HLV LS363HLV
Airow
Air supply outlet 111
Airflow direction (left/right) 5 Steps 5 Steps 5 Steps
Airflow direction (up/down) 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
Auto swing √√√
Auto wind √√√
Jet-cool/heat √ / √ √ / √ √ / √
Comfort air XXX
Air Purifying
Washable anti-fungal1√√√
Deodorizing filter XXX
Plasma2XXX
3M Micro Dust filter XXX
3M Micro Protection filter2√√√
Functions
Drain pump XXX
Electric heater XXX
Defrost √√√
Low ambient √ √ √
Hot start √√√
Self diagnostics √√√
Outdoor Unit Drain Pan Heater X o o
Dry (Dehumidification operation) √√√
Auto changeover √√√
Auto clean (coil dry) √√√
Auto restart √ √ √
Child lock (applicable with wired controller) ooo
Forced operation √√√
Sleep mode √√√
Timer (24hr on/off) √√√
Weekly timer (applicable with wired controller) ooo
Two thermistor control (applicable with wired controller) ooo
Energy saving
Controllers
Wireless Remote Controller √√√
Simple Controller with Mode Selection ooo
Simple Controller without Mode Selection ooo
LG Programmable Thermostat ooo
Dry contact ooo
Central control (LGAP) ooo
PI 485 ooo
Special Function Kit
Wi-Fi Module √√√
Water level sensor connection (for optional AG-9300-LG) ooo
Wind baffle kit ZLABGP02A ZLABGP02A ZLABGP02A
1Primary washable filters.
2Secondary filters.
√ = Standard feature
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
Single Zone Wall Mounted Extended Piping 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.
OUTDOOR UNIT DIMENSIONS
LSU243HLV, LSU303HLV, LSU363HLV
Unit : inch (mm)
Part Name RemarkNo
Air Discharge Grille1
3
Gas Pipe Connection Port
Liquid Pipe Connection Port
Control Box
13-13/32
14-3/16
6-15/32 21-1/2
2-3/4
12-19/32
34-1/4
13-3/32
29/32 5-7/8
17/32
3-5/32
21-1/2
20-27/32
31-1/2
7-11/16
4-7/32
6-25/32
7/8
15-3/32
1-25/32
25°
14°
6-29/32
2
4
3
1
Drain Hole 2-Ø13/16
2
4

PRODUCT DATA | 15
Product Data
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.
d
e
a
b
c
AD
BC
Figure 1: Center of Gravity and Corner Weight Dimensions Diagram.
OUTDOOR UNIT CENTER OF GRAVITY /
CORNER WEIGHT
Model Weight (lb.) Center of Gravity (inch) Leg (inch) Corner Weight (lb.)
Shipping Net a b c d e A B C D
LSU243HLV, LSU303HLV, LSU363HLV 132.3 124.6 21-3/32 13-25/32 6-23/32 21-1/2 13-13/32 21.2 18.7 39.9 44.8
Table 5: Center of Gravity and Corner Weight Dimensions.

16 |PRODUCT DATA
Single Zone Wall Mounted Extended Piping 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.
INDOOR UNIT DIMENSIONS
LSN243HLV, LSN303HLV, LSN363HLV
10-7/16
46-7/8
13-5/8
2-17/32
2-11/32
Part NameNo Remark
Front Panel1
Display & Signal Receiver
Air Suction Grille
Knockout Hole For pipe and cable
Installation Plate
3
2
1
33-25/32
6-9/16
1-11/16
13-3/16
2-17/32Ø
4-23/32
1-11/16
2-17/32Ø
4-23/32
6-9/16
Unit: inch
1-3/32 1-1/16
2-7/16
1-7/16
1/4 x 1/8
1/8 x 1/4
5/8 1-9/32
2-13/32
5-31/32
1-1/4
4
5
2
3
4
5
40-9/16

PRODUCT DATA | 17
Product Data
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.
OUTDOOR UNIT ACOUSTIC DATA
Model H
LSU243HLV 55
LSU303HLV 55
LSU363HLV 55
Table 6: Outdoor Unit Sound Pressure Data
Figure 2: Outdoor Unit Sound Levels
3.28 ft
Center of
Outdoor Unit
Figure 3: LSU243HLV, LSU303HLV, LSU363HLV
• 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
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

18 |PRODUCT DATA
Single Zone Wall Mounted Extended Piping 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.
INDOOR UNIT ACOUSTIC DATA
Figure 4: Indoor Unit Sound Levels
2.62 ft
3.28 ft
Microphone
Model H M L
LSN243HLV 49 44 40
LSN303HLV 49 44 40
LSN363HLV 49 44 40
Table 7: Indoor Unit Sound Pressure Data
• 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.
Figure 5: LSU243HLV, LSU303HLV, LSU363HLV
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0dB = 20μPa)
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

PRODUCT DATA | 19
Product Data
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.
REFRIGERANT FLOW DIAGRAMS
LSU/LSN243HLV
Thermistor. Description PCB Connector
TH1 Indoor air temperature thermistor CN-TH1 (Indoor)
TH2 Water level sensor (optional) CN-TH2 (Indoor)
TH3 Evaporator middle temperature thermistor CN-TH3 (Indoor)
TH4 Outdoor air temperature thermistor CN-TH2 (Outdoor)
TH5 Condenser temperature thermistor
TH6 Discharge pipe temperature thermistor CH-TH3 (Outdoor)
Appendix
Heat Exchanger
Four- Way Valve
Pressure Sensor
Propeller Fan
M
EEV
(Electronic
Expansion Valve)
Pressure Switch
Cross Flow Fan
M
Capillary Tube
Check Valve
Compressor
Two-Way Valve
Flare Joint
Accumulator
Temperature
Sensor
Three-Way Valve
Muffler
Strainer
Field Piping
(Copper Tubing)
Field Piping
(Copper Tubing)
M
M
Heat
Exchanger
(Evaporator)
Heat
Exchanger
(Condenser)
Compressor
Accumulator
2-Way Valve
Reversing
Valve
Indoor Unit Outdoor Unit
: Cooling
: Heating
EEV
TH1
TH3
TH4
TH5
TH6
Liquid Side
Vapor Side
3- Way Valve
TH2

20 |PRODUCT DATA
Single Zone Wall Mounted Extended Piping 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.
LSU/LSN303HLV, LSU/LSN363HLV
REFRIGERANT FLOW DIAGRAMS
Thermistor. Description PCB Connector
TH1 Indoor air temperature thermistor CN-TH1 (Indoor)
TH2 Water level sensor (optional) CN-TH2 (Indoor)
TH3 Evaporator middle temperature thermistor CN-TH3 (Indoor)
TH4 Outdoor air temperature thermistor CN-TH1 (Outdoor)
TH5 Condenser temperature thermistor
TH6 Discharge pipe temperature thermistor CH-TH2 (Outdoor)
Appendix
Heat Exchanger
Four- Way Valve
Pressure Sensor
Propeller Fan
M
EEV
(Electronic
Expansion Valve)
Pressure Switch
Cross Flow Fan
M
Capillary Tube
Check Valve
Compressor
Two-Way Valve
Flare Joint
Accumulator
Temperature
Sensor
Three-Way Valve
Muffler
Strainer
Field Piping
(Copper Tubing)
Field Piping
(Copper Tubing)
M
M
Heat
Exchanger
(Evaporator)
Heat
Exchanger
(Condenser)
Compressor
Accumulator
2-Way Valve
Reversing
Valve
Indoor Unit Outdoor Unit
: Cooling
: Heating
EEV
TH1
TH3
TH4
TH5
TH6
Liquid Side
Vapor Side
3- Way Valve
TH2