LG LS091HSV3 User manual

SINGLE ZONE HIGH EFFICIENCY, STANDARD,
EXTENDED PIPE, AND MEGA WALL MOUNTED
INSTALLATION MANUAL
6LQJOH=RQH+LJK(I¿FLHQF\
LS091HSV3, LS121HSV3, LS181HSV3, LS240HSV3
SLQJOH =RQH SWDQGDUG LS30HV3, LS30HV3
SLQJOH =RQH ([WHQGHG 3LSH LS240HLV, LS300HLV, LS30HLV
SLQJOH =RQH 0HJD LS090H(V, LS120H(V, LS180H(V, LS240H(V
LS090HEV1, LS120HEV1, LS180HEV1, LS240HEV1
SLQJOH =RQH 0HJD 11VLS090H;V, LS120H;V

The instructions included in this manual must be followed to prevent product malfunction, property damage, injury, or death to the user or
other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the
symbols described below.
'R QRW WKURZ DZD\, GHVWUR\, RU ORVH WKLV PDQXDO
Please read carefully and store in a safe place for future reference.
Content familiarity required for proper installation.
A summary list of safety precautions begins on page 3.
)RU PRUH WHFKQLFDO PDWHULDOV VXFK DV VXEPLWWDOV, HQJLQHHULQJ
GDWDERRNV, DQG FDWDORJV, YLVLW ZZZOJKYDFFRP
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.
This document is for design purposes only.
IM_WallMounted_All_11_15

3
Safety Instructions
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
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 described
below.
TABLE OF SYMBOLS
Do not install, remove, or re-install the unit by yourself
(end user). Ask the dealer or an authorized technician to
install the unit.
Improper installation Ey the user may result in water leaNaJe, ¿re,
explosion, electric shock, physical injury or death.
For replacement of an installed unit, always contact an LG
trained service provider.
There is risk of ¿re, electric shock, explosion, and physical injury or death.
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 physical injury or death.
Do not run the compressor with the service valves
closed.
There is a risk of explosion, physical injury, or death.
Periodically check that the outdoor frame is not damaged.
There is a 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, causinJ¿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 ill-
ness 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.
Install the unit considering the potential for strong winds or
earthquakes.
Improper installation may cause the unit to fall over, 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.
Do not install the unit on a defective stand.
There is a risk of physical injury.
INSTALLATION
'RQ¶WVWRUHRUXVHÀDPPDEOHJDVFRPEXVWLEOHVQHDUWKH
unit.
There is risk of ¿re, explosion, and physical injury or death.
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

4
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
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
INSTALLATION - CONTINUED
Don’t install the unit where it’s directly exposed to ocean
winds.
Ocean winds may cause corrosion, particularly on the condenser and
evaporator ¿ns, which, in turn could cause product malfunction or inef-
¿cient performance.
When installing the unit in a low-lying area, or a location that
is not level, use a raised concrete pad or concrete blocks to
provide a solid, level foundation.
This may prevent water damage and reduce abnormal vibration.
Properly insulate all cold surfaces to prevent “sweating.”
Cold surfaces such as uninsulated piping can generate condensate that may
drip and cause a slippery surface condition and/or water damage to walls.
When installing the unit in a hospital, mechanical room, or
VLPLODUHOHFWURPDJQHWLF¿HOG(0)VHQVLWLYHHQYLURQPHQW
SURYLGHVXI¿FLHQWSURWHFWLRQDJDLQVWHOHFWULFDOQRLVH
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
preserving foods, works of art, wine coolers, or other
precision air conditioning applications. The 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.
Keep the unit upright during installation to avoid vibration or
water leakage.
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
according to applicable U.S. Environmental Protection
Agency (EPA) rules.
Periodically check that the outdoor frame is not damaged.
There is a risk of equipment damage.
Install the unit in a safe location where nobody can step on
or fall onto it. Do not install the unit on a defective stand.
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.
'RQ¶WVWRUHRUXVHÀDPPDEOHJDVFRPEXVWLEOHVQHDUWKH
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 system
and authorization to do so has been obtained from the com-
missioning agent.
There is a risk of refrigerant contamination, refrigerant loss and equip-
ment damage.
Do not run the compressor with the service valves
closed.
There is a risk of equipment damage.
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.
If the air conditioner is installed in a small space, take
measures to prevent the refrigerant concentration from
exceeding 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
refrigerant leaks and safety limits are exceeded, it could result in personal
injuries or death from oxygen depletion.
Install the unit in a safe location where nobody can step on or
fall onto it.
There is risk of physical injury or death.
Properly insulate all cold surfaces to prevent “sweating.”
Cold surfaces such as uninsulated piping can generate condensate that
could drip, causing a slippery surface that creates a risk of slipping, falling,
and personal injury.

5
Safety Instructions
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
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.
Electrical 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.
WIRING
The information contained in this manual is intended for use
E\DQLQGXVWU\TXDOL¿HGH[SHULHQFHGFHUWL¿HGHOHFWULFLDQ
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.
All electric work must be performed by a licensed electrician
and conform to local building codes or, in the absence of
local codes, with the National Electrical Code, and the
instructions given in this manual.
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
RIVXI¿FLHQWFXUUHQWFDSDFLW\DQGUDWLQJ
:ires that are too small may generate heat and cause a ¿re.
6HFXUHDOO¿HOGZLULQJFRQQHFWLRQVZLWKDSSURSULDWHZLUH
strain relief.
Improperly securing wires will create undue stress on equipment power
lugs. Inadequate connections may generate heat, cause a ¿re and phys-
ical injury or death.


6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
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
&OHDQXSWKHVLWHDIWHULQVWDOODWLRQLV¿QLVKHGDQGFKHFN
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. The equipment is designed to
provide comfort cooling and heating.
Oil, steam, sulfuric smoke, etc., can signi¿cantly reduce the performance
of the unit, or damage its parts.
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 part cover to the indoor unit
and the service panel to the outdoor unit.
Non-secured covers can result in malfunction due to dust or water in the
service panel.
Periodically verify the equipment mounts have not
deteriorated.
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.
OPERATION
'RQRWSURYLGHSRZHUWRRURSHUDWHWKHXQLWLILWLVÀRRG-
ed 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.
If gas leaks out, ventilate the area before operating 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.
To avoid physical injury, use caution when cleaning or
servicing the air conditioner.
Do not allow water, dirt, or animals to enter the unit.
There is risk of ¿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 oper-
ation.
It can cause burns or frostbite.
Do not operate the unit with the panel(s) or protective
FRYHUVUHPRYHGNHHS¿QJHUVDQGFORWKLQJDZD\IURP
moving parts.
The rotating, hot, cold, and high-voltage parts of the unit can cause
physical injury or death.
Periodically verify the equipment mounts have not
deteriorated.
If the base collapses, the unit could fall and cause physical injury or death.
Periodically, check power cord and plug for damage.
Cord 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 re-
moved. Do not insert hands or other objects through the
inlet or outlet when the unit is plugged in. Do not touch
WKHHOHFWURVWDWLF¿OWHULIWKHXQLWLQFOXGHVRQH
The unit contains sharp, rotating, hot, and high voltage parts that can
cause personal injury and/or electric shock.
Securely attach the electrical part cover to the indoor unit
and the service panel to the outdoor unit.
Non-secured covers can result in burns or electric shock due to dust or
water in the service panel.


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................................................................................3
General Data..........................................................................................8
Unit Nomenclature............................................................................... 8
Single =one High Ef¿ciency Unit Speci¿cations.................................. 9
Single =one Standard Unit Speci¿cations ......................................... 10
Single =one Extended Pipe Unit Speci¿cations .................................11
Single =one 0ega Unit Speci¿cations.......................................... 12-13
Single =one 0ega 1159Unit Speci¿cations...................................... 14
Electrical............................................................................................ 15
R410A Refrigerant............................................................................. 16
General Installation Guidelines..........................................................17
Location Selection ............................................................................. 17
Oceanside Applications ..................................................................... 18
Mounting Bolt Location...................................................................... 19
Required Clearances.................................................................... 19-20
Mounting of Indoor Unit Installation Plate..................................... 21-25
Mounting of Indoor Unit ..................................................................... 26
Piping Preparation............................................................................. 27
Piping Materials and Handling...................................................... 28-33
Piping Support, Elbow Usage............................................................ 33
Refrigerant Piping System Layout..................................................... 35
Refrigerant Piping Connections.........................................................36
Refrigerant Piping System Limitations............................................... 36
Installation Overview ......................................................................... 38
Directional Pipe Formation ................................................................ 39
Drain Hose......................................................................................... 40
Outdoor Unit Connections ............................................................ 41-42
Indoor Unit Connections.................................................................... 43
Indoor Unit Connections - Conduit Bracket Placement ..................... 44
Bundling and Cutting Line ................................................................. 45
Refrigerant Piping Insulation ........................................................ 46-48
Air Purging......................................................................................... 49
Leak Test/Soap Method Check.......................................................... 50
Evacuation of Lines ........................................................................... 51
Finishing Up....................................................................................... 51
Remote Controller ............................................................................. 51
Pump Down, Cooling Only Mode ...................................................... 52
Electrical Wiring..................................................................................53
General Information and Safety Guidelines....................................... 53
Power :iring Speci¿cations and Best Practices.......................... 53-55
Controllers ......................................................................................... 55
Indoor Unit Electrical Connections ............................................... 56-60
Outdoor Unit Electrical Connections............................................. 61-65
Self Diagnosis Functions .............................................................66-67
LG SIMS - Self Diagnosis Functions ........................................... 68-69
Troubleshooting..................................................................................70
Error Codes ................................................................................. 70-72
Refrigerant Leaks .............................................................................. 73
Installation Checklist...........................................................................74

8
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
Single Zone Wall Mount Indoor and Outdoor Units
LS N091 HSV 3
Generation
3 = Third
Indoor/Outdoor Product
HSV = High Efficiency
HV = Standard
HLV = Extended Pipe
HEV/HEV1 = Mega
HXV = Mega 115V
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
Type
N = Indoor Wall Mount Unit
U = Outdoor Heat Pump Unit
Family
LS= High Efficiency Wall Mount / Standard/ / Extended Pipe / Mega
8QLW 1RPHQFODWXUH

9
Product Data
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
SLQJOH =RQH HLJK EI¿FLHQF\ 8QLW SSHFL¿FDWLRQV
Type 6LQJOH=RQH+LJK(IÀFLHQF\8QLWV
System Model Number (IDU/ODU) LS091HSV3 (LSN091HSV3/
LSU091HSV3)
LS121HSV3
(LSN121HSV3/
LSU121HSV3)
LS181HSV3
(LSN181HSV3/
LSU181HSV3)
LS240HSV3
(LSN240HSV3/
LSU240HSV3)
Nominal Cooling Capacity (Btu/h) 9,000 11,200 18,200 22,000
Cooling Power Input1(kW) 0.67 0.89 1.4 1.7
Nominal Heating Capacity (Btu/h)110,800 13,300 22,000 27,600
Heating Power Input1(kW) 0.70 1.0 1.7 2.3
COP 4.53 3.90 3.66 3.4
EER 13.3 12.5 12.6 12.5
SEER 21.5 21.5 20.5 20.0
HSPF 11.0 11.0 9.7 10.2
Power Supply (V/Hz/Ø) 208-230/60/1
Outdoor Unit Operating Range2
Cooling (°F DB) 14-118
Heating (°F WB) -4-75
Indoor Unit Operating Range2
Cooling (°F) 64-90
Heating (°F) 60-86
Unit Data
Refrigerant Type3R410A
Refrigerant Control EEV
IDU Sound Pressure4dB(A) (H/M/L) 38/33/24 39/33/24 45/40/35 46/43/39
ODU Sound Pressure4dB(A) 45 45 53 54
Power/Communication Cable5 (No. xAWG) 4 x 18
IDU Net/Shipping Weight (lbs) 23/28 23/28 32/41 36/42
ODU Net/Shipping Weight (lbs) 75/79 75/79 123/131 128/137
Compressor
Compressor Type (Qty) Rotary (1) 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) 388/335/272/212 423/353/272/212 735/622/509/399 883/742/629/424
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(ft) (Min./Max.) 6.6/65.6 6.6/65.6 9.8/98.4 9.8/98.4
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
Table 1: Single =one High Ef¿ciency Unit Speci¿cations
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
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.
5Power/communication cables from the outdoor unit to the indoor unit to be minimum 18 AWG, 4-conduc-
tor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis at the outdoor unit
only) and must comply with applicable and national code.
6Piping lengths are equivalent.
Power wiring to the outdoor unit is field supplied, solid or stranded, and must comply with the applicable
local and national codes.
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).

10
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
SLQJOH =RQH SWDQGDUG 8QLW SSHFL¿FDWLRQV
Table 2: Single =one Standard Unit Speci¿cations
Type Single Zone Standard Units
System Model Number (IDU/ODU) LS307HV3 (LSN307HV3/LSU307HV3) LS360HV3 (LSN360HV3/LSU360HV3)
Nominal Cooling Capacity (Btu/h) 30,000 33,000
Cooling Power Input1(kW) 3.0 4.0
Nominal Heating Capacity (Btu/h)132,000 35,200
Heating Power Input1(kW) 3.1 3.8
COP 3.0 2.7
EER 10.0 8.2
SEER 18.0 16.1
HSPF 9.5 9.9
Power Supply (V/Hz/Ø) 208-230/60/1 208-230/60/1
Outdoor Unit Operating Range
Cooling (°F DB) 14-118 14-118
Heating (°F WB) -4-75 -4-75
Indoor Unit Operating Range
Cooling (°F) 64-90 64-90
Heating (°F) 60-86 60-86
Unit Data
Refrigerant Type2R410A R410A
Refrigerant Control EEV EEV
IDU Sound Pressure3dB(A) (H/M/L) 49/44/39 49/44/39
ODU Sound Pressure3dB(A) 55 55
Power/Communication Cable4 (No. xAWG) 4 x 18 4 x 18
IDU Net/Shipping Weight (lbs) 36/42 36/42
ODU Net/Shipping Weight (lbs) 128/137 128/137
Compressor
Compressor Type (Qty) Twin Rotary (1) Twin Rotary (1)
Fan
IDU Type (Qty) Cross Flow Cross Flow
ODU Type (Qty) Propeller Propeller
Motor/Drive Brushless Digitally Controlled/Direct
Airflow Rate
IDU Max/H/M/L (CFM) 883/770/629/424 883/795/629/424
ODU Max (CFM) 2,119 2,119
Piping
Liquid Line (in, OD) 3/8 3/8
Vapor Line (in, OD) 5/8 5/8
Condensation Line (OD/ID) 27/32, 5/8 27/32, 5/8
Additional Refrigerant Charge (oz/ft) 0.38 0.38
Pipe Length5(ft) (Min./Max.) 9.8/98.4 9.8/98.4
Piping Length5(no add’l refrigerant, ft) 24.6 24.6
Max Elevation Difference (ft) 49.2 49.2
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
1Power Input is rated at high speed.
2Take 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.
3Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
4Power/communication cables from the outdoor unit to the indoor unit to be minimum 18 AWG, 4-con-
ductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis at the outdoor
unit only) and must comply with applicable and national code.
5Piping lengths are equivalent.
Power wiring to the outdoor unit is field supplied, solid or stranded, and must comply with the applicable
local and national codes.
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).

11
Product Data
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
Type Single Zone Extended Pipe Units
System Model Number (IDU/ODU) LS240HLV
(LSN240HLV/LSU240HLV) LS300HLV (LSN300HLV/LSU300HLV) LS360HLV (LSN360HLV/LSU360HLV)
Nominal Cooling Capacity (Btu/h) 22,000 30,000 33,000
Cooling Power Input1(kW) 1.7 3.0 4.0
Nominal Heating Capacity (Btu/h)127,000 32,000 35,200
Heating Power Input1(kW) 2.3 3.1 3.8
COP 3.32 3.03 2.69
EER 12.5 10.0 8.2
SEER 21.0 18.5 16.5
HSPF 11 10 10
Power Supply (V/Hz/Ø) 208-230/60/1
Outdoor Unit Operating Range
Cooling (°F DB) 14-118
Heating (°F WB) -4-65
Indoor Unit Operating Range
Cooling (°F) 53-75
Heating (°F) 60-86
Unit Data
Refrigerant Type2R410A
Refrigerant Control EEV
IDU Sound Pressure3dB(A) (H/M/L) 49/44/40 49/44/40 49/44/40
ODU Sound Pressure3dB(A) 55 55 55
Power/Communication Cable4 (No. xAWG) 4 x 18
IDU Net/Shipping Weight (lbs) 40/46 40/46 40/46
ODU Net/Shipping Weight (lbs) 125/133 125/133 125/133
Compressor
Compressor Type (Qty) Twin Rotary (1) Twin Rotary (1) Twin Rotary (1)
Fan
IDU Type (Qty) Cross Flow
ODU Type (Qty) Propeller
Motor/Drive Brushless Digitally Controlled/Direct
Airflow Rate
IDU Max/H/M/L (CFM) 848/706/530/459 848/706/530/459 848/706/530/459
ODU Max (CFM) 2,119 2,119 2,119
Piping
Liquid Line (in, OD) 3/8 3/8 3/8
Vapor Line (in, OD) 5/8 5/8 5/8
Condensation Line (OD, ID) 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(ft) (Min./Max.) 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
Table 3: Single =one Extended Pipe Unit Speci¿cations
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
1Power Input is rated at high speed.
2Take 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.
3Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
4Power/communication cables from the outdoor unit to the indoor unit to be minimum 18 AWG, 4-con-
ductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis at the outdoor
unit only) and must comply with applicable and national code.
5Piping lengths are equivalent.
Power wiring to the outdoor unit is field supplied, solid or stranded, and must comply with the applicable
local and national codes.
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).
SLQJOH =RQH E[WHQGHG 3LSH 8QLW SSHFL¿FDWLRQV

12
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
SLQJOH =RQH 0HJD 8QLW HEVSSHFL¿FDWLRQV
Type Single Zone Mega (HEV) Inverter
System (Model IDU/ODU) LS090HEV (LSN090HEV/
LSU090HEV)
LS120HEV
(LSN120HEV/
LSU120HEV)
LS180HEV
(LSN180HEV/
LSU180HEV)
LS240HEV
(LSN240HEV/
LSU240HEV)
Nominal Cooling Capacity (Btu/h) 8,500 12,000 17,000 22,000
Cooling Power Input1(kW) 0.78 1.17 1.55 2.04
Nominal Heating Capacity (Btu/h) 9,000 12,000 19,000 22,000
Heating Power Input1(kW) 0.78 0.98 1.59 1.93
COP 3.19 3.00 3.19 3.00
EER 10.90 10.26 10.95 10.75
SEER 16.3 16.3 17.0 17.0
HSPF 8.3 8.5 8.7 8.5
Power Supply (V / Hz / Ø) 208-230/60/1
ODU Operating Range
Cooling (°F DB) 64-118
Heating (°F WB) 23-75
IDU Operating Range
Cooling (°F WB) 64-90
Heating (°F DB) 60-86
Indoor Temperature Setting Range
Cooling (°F) 65-86
Heating (°F) 61-86
Unit Data
Refrigerant Type2R410A
Refrigerant Control Capillary Tube
IDU Sound Pressure3± 3 dB(A) (H/M/L) 39/33/25 39/33/25 42/40/35 45/40/35
ODU Sound Pressure ± 3 dB(A) 47 47 51 53
Indoor Unit (Net/Shipping Weight lbs.) 16/21 20/25 28/30 28/34
Outdoor Unit (Net/Shipping Weight lbs.) 52/56 49/53 72/77 92/104
Power/Communication Cable4(No. xAWG) 4 x 18
Compressor
Compressor Type (Qty) Single Rotary (1) Single Rotary (1) Twin Rotary (1) Twin Rotary (1)
Fan
Indoor Type (Qty) Cross Flow (1)
Outdoor Type (Qty) Propeller (1)
Motor/Drive Brushless Digitally Controlled/Direct
Airflow Rate
Indoor - Max/H/M/L (CFM) 318/276/226/177 424/353/272/212 629/512/441/353 689/600/494/388
Outdoor - Max (CFM) 953 953 1,342 1,766
Piping
Liquid Line (in, OD) 1/4 1/4 1/4 1/4
Vapor Line (in, OD) 3/8 3/8 1/2 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 0.33 0.33
Pipe Length5(ft) (Min./Max.) 9.8/49.2 9.8/49.2 9.8/65.6 9.8/65.6
Piping Length (no add’l refrigerant, ft)524.6 24.6 24.6 24.6
Max Elevation Difference (ft) 22.9 22.9 32.8 32.8
Table 4: Single =one Mega Unit (HEV) Speci¿cations
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
1Power Input is rated at high speed.
2Take 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.
3Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
4Power/communication cables from the outdoor unit to the indoor unit to be minimum 18 AWG, 4-con-
ductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis at the outdoor
unit only) and must comply with applicable and national code.
5Piping lengths are equivalent.
Power wiring to the outdoor unit is field supplied, solid or stranded, and must comply with the applicable
local and national codes. 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).

13
Product Data
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
SLQJOH =RQH 0HJD 8QLW HEV1SSHFL¿FDWLRQV
Table 5: Single =one Mega Unit (HEV1) Speci¿cations
Type Single Zone Mega (HEV1) Inverter
System (Model IDU/ODU) LS090HEV1 (LSN090HEV1/
LSU090HEV1)
LS120HEV1
(LSN120HEV1/
LSU120HEV1)
LS180HEV1
(LSN180HEV1/
LSU180HEV1)
LS240HEV1
(LSN240HEV1/
LSU240HEV1)
Nominal Cooling Capacity (Btu/h) 8,500 12,000 17,000 22,000
Cooling Power Input1(kW) 0.68 1.14 1.55 2.045
Nominal Heating Capacity (Btu/h) 9,000 12,000 19,000 22,000
Heating Power Input1(kW) 0.78 0.98 1.59 1.935
COP 11.54 12.24 11.95 11.37
EER 12.5 10.52 10.97 10.76
SEER 19.0 17.0 18.0 17.0
HSPF 9.0 9.2 9.0 9.0
Power Supply (V / Hz / Ø) 208-230/60/1
ODU Operating Range
Cooling (°F DB) 14-118
Heating (°F WB) 14-65
IDU Operating Range
Cooling (°F WB) 53-75
Heating (°F DB) 60-86
Indoor Temperature Setting Range
Cooling (°F) 64-86
Heating (°F) 60-86
Unit Data
Refrigerant Type2R410A
Refrigerant Control EEV
IDU Sound Pressure3± 3 dB(A) (H/M/L) 39/33/25/19 39/33/25/19 42/40/35/29 45/40/35/29
ODU Sound Pressure ± 3 dB(A) 47 47 51 53
Indoor Unit (Net/Shipping Weight lbs.) 17/20 23/28 28/33 28/44
Outdoor Unit (Net/Shipping Weight lbs.) 62/67 62/67 76/81 95/104
Power/Communication Cable4(No. xAWG) 4 x 18
Compressor
Compressor Type (Qty) Single Rotary (1) Single Rotary (1) Twin Rotary (1) Twin Rotary (1)
Fan
Indoor Type (Qty) Cross Flow (1)
Outdoor Type (Qty) Propeller (1)
Motor/Drive Brushless Digital Controlled/Direct
Airflow Rate
Indoor - Max/H/M/L (CFM) 318/276/226/177 424/353/272/212 629/512/441/353 689/600/494/388
Outdoor - Max (CFM) 953 953 1,342 1,766
Piping
Liquid Line (in, OD) 1/4 1/4 1/4 1/4
Vapor Line (in, OD) 3/8 3/8 1/2 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 0.33 0.33
Pipe Length5(ft) (Min./Max.) 9.8/49.2 9.8/49.2 9.8/65.6 9.8/65.6
Piping Length (no add’l refrigerant, ft)524.6 24.6 24.6 24.6
Max Elevation Difference (ft) 22.9 22.9 32.8 32.8
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
1Power Input is rated at high speed.
2Take 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.
3Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
4Power/communication cables from the outdoor unit to the indoor unit to be minimum 18 AWG, 4-con-
ductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis at the outdoor
unit only) and must comply with applicable and national code.
5Piping lengths are equivalent.
Power wiring to the outdoor unit is field supplied, solid or stranded, and must comply with the applicable
local and national codes.
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).

14
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
SLQJOH =RQH 0HJD115V 8QLW SSHFL¿FDWLRQV
Type Single Zone Mega Inverter
System (Model IDU/ODU) LS090HXV (LSN090HXV/LSU090HXV) LS120HXV (LSN120HXV/LSU120HXV)
Nominal Cooling Capacity (Btu/h) 8,500 12,000
Cooling Power Input1(kW) 0.71 1.14
Nominal Heating Capacity (Btu/h) 10,900 13,000
Heating Power Input1(kW) 0.88 1.09
COP 3.63 3.50
EER 12.01 10.5
SEER 17.0 17.0
HSPF 9.0 9.0
Power Supply (V / Hz / Ø) 115/60/1
ODU Operating Range
Cooling (°F DB) 14-118
Heating (°F WB) 14-75
IDU Operating Range
Cooling (°F WB) 64-90
Heating (°F DB) 60-86
Indoor Temperature Setting Range
Cooling (°F) 65-86
Heating (°F) 61-86
Unit Data
Refrigerant Type2R410A
Refrigerant Control EEV
IDU Sound Pressure3± 3 dB(A) (H/M/L) 39/33/25 39/33/25
ODU Sound Pressure ± 3 dB(A) 47 47
Indoor Unit (Net/Shipping Weight lbs.) 23/26 23/26
Outdoor Unit (Net/Shipping Weight lbs.) 67/79 67/79
Power/Communication Cable4(No. xAWG) 4 x 18
Compressor
Compressor Type (Qty) Single Rotary (1) Single Rotary (1)
Fan
Indoor Type (Qty) Cross Flow (1)
Outdoor Type (Qty) Propeller (1)
Motor/Drive Brushless Digitally Controlled/Direct
Airflow Rate
Indoor - Max/H/M/L (CFM) 335/272/212/124 335/272/212/124
Outdoor - Max (CFM) 1,000 1,000
Piping
Liquid Line (in, OD) 1/4 1/4
Vapor Line (in, OD) 3/8 3/8
Condensation Line (OD | ID) 27/32 | 5/8 27/32 | 5/8
Additional Refrigerant Charge (oz/ft) 0.22 0.22
Pipe Length5(ft) (Min./Max.) 6.6/49.2 6.6/49.2
Piping Length (no add’l refrigerant, ft)524.6 24.6
Max Elevation Difference (ft) 23 23
Table 6: Single =one Mega 115V Unit Speci¿cations
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
1Power Input is rated at high speed.
2Take 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.
3Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
4Power/communication cables from the outdoor unit to the indoor unit to be minimum 18 AWG, 4-con-
ductor, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis at the outdoor
unit only) and must comply with applicable and national code.
5Piping lengths are equivalent.
Power wiring to the outdoor unit is field supplied, solid or stranded, and must comply with the applicable
local and national codes.
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).

15
Product Data
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
Model Number Nom. Tons Compressor
Qty Compressor (A) Cool/Heat Fan Qty ODU Fan (A) IDU Fan (A) MCA(A) MOP (A)
LSU091HSV3 3/4 1 8.7/8.7 1 0.40 0.4 10 15
LSU121HSV3 1 1 8.7/8.7 1 0.40 0.4 10 15
LSU181HSV3 1-1/2 1 15.4/15.4 1 0.25 0.4 19 25
LSU240HSV3 1-3/4 1 15.4/15.4 1 0.25 0.5 19 25
Table 7: Single =one High Ef¿ciency Indoor Unit Electrical Data
Model Number Nom. Tons Compressor
Qty Compressor (A) Cool/Heat Fan Qty ODU Fan (A) IDU Fan (A) MCA(A) MOP (A)
LSU307HV3 2-1/2 1 15.4/15.4 1 0.25 0.5 19 25
LSU360HV3 2-3/4 1 15.4/15.4 1 0.25 0.5 19 25
Table 8: Single Zone Standard Indoor Unit Electrical Data
Model Number Nom. Tons Compressor
Qty Compressor (A) Cool/Heat Fan Qty ODU Fan (A) IDU Fan (A) MCA(A) MOP (A)
LSU240HLV 1-3/4 1 17.3/17.3 1 0.25 0.5 23 35
LSU300HLV 2-1/2 1 17.3/17.3 1 0.25 0.5 23 35
LSU360HLV 2-3/4 1 17.3/17.3 1 0.25 0.5 23 35
Table 9: Single Zone Extended Pipe Indoor Unit Electrical Data
EOHFWULFDO
Unit Model Nos. Nom. Tons Compressor
Qty Compressor (A) Cool/Heat Fan Qty ODU Fan (A) IDU Fan (A) MCA (A) MOP (A)
LSU090HEV 3/4 1 6.8/6.8 1 0.5 0.5 9 15
LSU120HEV 1 1 6.8/6.8 1 0.5 0.5 9 15
LSU180HEV 1-1/2 1 8.68/9.28 1 0.4 0.4 12 20
LSU240HEV 2 1 10.8/9.6 1 0.48 0.48 14 20
Table 10: 208-230V, 60Hz, 1-Phase Single Zone Mega (HEV) Indoor Unit Electrical Data
Table 11: 208-230V, 60Hz, 1-Phase Single Zone Mega (HEV1) Indoor Unit Electrical Data
Unit Model Nos. Nom. Tons Compressor
Qty Compressor (A) Cool/Heat Fan Qty ODU Fan (A) IDU Fan (A) MCA (A) MOP (A)
LSU090HXV 3/4 1 10/10 1 0.4 0.5 13.5 20
LSU120HXV 1 1 10/10 1 0.4 0.5 13.5 20
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
MSC = Maximum Starting Current.
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.
Table 12: 115V, 60Hz, 1-Phase Single Zone Mega 115V Indoor Unit Electrical Data
Unit Model Nos. Nom. Tons Compressor
Qty Compressor (A) Cool/Heat Fan Qty ODU Fan (A) IDU Fan (A) MCA (A) MOP (A)
LSU090HEV1 3/4 1 7.0/7.0 1 0.5 0.5 10 15
LSU120HEV1 1 1 7.0/7.0 1 0.5 0.5 10 15
LSU180HEV1 1-1/2 1 8.81/8.61 1 0.4 0.4 12 20
LSU240HEV1 2 1 10.72/10.28 1 0.4 0.4 15 20

1
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
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. Many countries have
approved of and encouraged R410A for use as an alternate refrigerant.
•Do not use any piping that has not been approved for use in high-pressure refrigerant systems. Improper piping may cause refrig-
erant leaks and system malfunction.
• Piping wall thickness must comply with the applicable local, state, and federal codes for the 551 psi design pressure of R410A.
• Because R410A is a combination of R32 and R125, the required additional refrigerant must be charged in its liquid state. If the refrig-
erant is charged in its gaseous state, its composition changes and the system will not work properly.
Do not place the refrigerant cylinder in direct sunlight. There is risk of ¿re, explosion, and physical injury or death.
Do not use any piping that has not been approved for use in high-pressure refrigerant systems. There is risk of ¿re, explosion and
physical injury or death. Improper piping may also cause refrigerant leaks. If the refrigerant leaks and safety limits are exceeded, it could
result in personal injuries or death from oxygen depletion.

17
General Installation Guidelines
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Location Selection
Selecting the Best Location
DANGER
• To avoid the possibility of fire, do not install the unit in an area where combustible gas may generate, flow, stagnate, or leak.
•Do not install the unit in a location where acidic solution and spray (sulfur) are often used as it can cause bodily injury or death.
•Do not use the unit in environments where oil, steam, or sulfuric gas are present as it can cause bodily injury or death.
Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it.
Select a location for installing the outdoor unit that will meet the following conditions:
• Where the unit will not be subjected to direct thermal radiation from other heat sources.
• Where operating sound from the unit will not disturb inhabitants of surrounding buildings.
• Where the unit will not be exposed to direct, strong winds.
• Where there is enough strength to bear the weight of the unit.
• Include space for drainage to ensure condensate flows properly out of the unit when it is in heating mode.
• Include enough space for air flow and for service access.
To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or severe wind-
chill or cold:
1. Prepare for severe winter wind chills and heavy snowfall, even in areas of the country where these are unusual phenomena.
2. Position the outdoor unit so that its airflow fans are not buried by direct, heavy snowfall. If snow piles up and blocks the airflow, the
system may malfunction.
3. Remove any snow that has accumulated 3-15/16 inches or more on the top of the outdoor unit.
4. Place the outdoor unit on a raised platform at least 19-11/16 inches higher than the average annual snowfall for the area. In environments
where there is a possibility of heavy snow, the frame height must be more than two (2) times the amount of average annual snowfall, and
should not exceed the width of the outdoor unit. If the frame width is wider than the outdoor unit, snow may accumulate.
5. Install a snow protection hood.
6. To prevent snow and heavy rain from entering the outdoor unit, install the suction and discharge ducts facing away from direct winds.
7. Additionally, the following conditions should be taken into consideration when the unit operates in defrost mode:
• If the outdoor unit is installed in a highly humid environment (near an ocean, lake, etc.), ensure that the site is well-ventilated and has a lot of
natural light. (Example: Install on a rooftop.)
• Sidewalks or parking lots near the outdoor unit may accumulate moisture after unit operates in defrost mode that can turn to ice.
Ambient Air Conditions
• Avoid exposing the outdoor unit to steam, combustible gases, or other corrosive elements.
• Avoid exposing the unit to discharge from boiler stacks, chimneys, steam relief ports, other air conditioning units, kitchen vents, plumbing
vents, or substances that may degrade performance or cause damage to the unit.
• When installing multiple outdoor units, avoid placing the units where discharge of one outdoor unit will blow into the inlet side of an adjacent unit.
Avoid exposing the unit to sources of extreme temperature or gases to prevent serious bodily injury.
The indoor unit may take longer to provide heat, or heating performance will be reduced in winter if the unit is installed:
1. In a narrow, shady location.
2. Near a location that has a lot of ground moisture.
3. In a highly humid environment.
4. In an area in which condensate does not drain properly.

18
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
• Avoid installing the outdoor unit where it would be directly exposed
to ocean winds.
• Install the outdoor unit on the side of the building opposite from
direct ocean winds.
• Select a location with good drainage.
• Periodically clean dust or salt particles off of the heat exchanger
with water.
• If the outdoor unit must be placed in a location where it would
be subjected to direct ocean winds, install a concrete windbreak
strong enough to block any winds.
• Windbreak should be more than 150% of the outdoor unit’s height.
There must be 2 to 3-1/2 inches of clearance between the outdoor
unit and the windbreaker for purposes of air flow. Additional anti-corrosion treatment may need to be applied to the
outdoor unit at oceanside locations.
Ocean winds may cause corrosion, particularly on the condenser and
evaporator ¿ns, which, in turn could cause product malfunction or
inef¿cient performance.
Oceanside Applications
Figure 1: Oceanside Placement Using Windbreak
Figure 2: Placement Using Building as Shield
Oceanside Applications
Use of a Windbreak to Shield from Sea Wind
Sea wind
Windbreak
Use of a Building to Shield from Sea Wind
Sea wind
Sea wind
Building
Building
If a windbreak is not possible, a building or larger structure must
be used to shield the outdoor unit from direct exposure to the sea
wind. The unit should be placed on the side of the building directly
opposite to the direction of the wind as shown in Figure 2.

19
General Installation Guidelines
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Mounting Bolt Location
General Mounting
Securely attach the outdoor unit to a condenser pad, base rails, or
another mounting platform that is securely anchored to the ground or
building structure. Attach the outdoor unit with a bolt and nut on a con-
crete or rigid mount. See Figure 3. Follow applicable local codes for
clearance, mounting, anchor and vibration attenuation requirements.
All referenced materials are to be ¿eld-supplied. Images are not to scale.
Figure 3: Outdoor Unit Mounting Methods
Bolt
Placement
& Anti-Vibration
Pad
Piping Connection
Top of Unit
Foundation
Mounting Platform
The underlying structure or foundation must be designed to support
the weight of the unit. Avoid placing the unit in a low lying area
where water may accumulate. When installing the outdoor unit on
the wall or roof top, anchor the mounting base securely to account
for wind, earthquakes or vibration.
Tie-Downs and Wind Restraints
The strength of the Single Zone system frame is adequate to
be used with field-provided wind restraint tie-downs. The overall
tie-down configuration must be approved by a local professional
engineer.
Always refer to local code when designing a wind restraint system.
Snow and Ice Conditions
In climates that experience snow build-up, place the unit on a raised platform to ensure condenser airflow. The raised support platform must
be high enough to allow the unit to remain above possible snow drifts. Mount the unit on a field-provided snow stand at a minimum height
that is equal to the average annual snowfall plus 20 inches. Design the mounting base to prevent snow accumulation on the platform in front
or back of the unit case. If necessary, provide a field fabricated hood to keep snow and ice and/or drifting snow from accumulating on the coil
surfaces. Use inlet and discharge duct or hoods to prevent snow or rain from accumulating on the fan inlet and outlet guards. Best practice
prevents snow from accumulating on top of the unit. Consider tie-down requirements in case of high winds or where required by local codes.
Proper airflow through the Single Zone outdoor unit coil is critical for correct unit operation. When installing, consider service, inlet and outlet,
and minimum allowable space requirements as illustrated in the diagrams to follow.
When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on
sidewalks or driveways which may create unsafe conditions.
Minimum Clearance Requirements for Single Zone Systems
Specific clearance requirements in the diagrams on the next page are for the single zone wall mount systems. Figure 4 shows the overall
minimum clearances that must be observed for safe operation and adequate airflow around the outdoor unit.
When placing the outdoor unit under an overhang, awning, sunroof or other “roof-like structure, observe the clearance requirements (as shown
in Figure 5) for height in relation to the unit. This clearance ensures that heat radiation from the condenser is not restricted around the unit. See
Figures 6 and 7 for recommendations when other obstacles are present.
Adhere to all clearance requirements if installing the unit on a roof. Be sure to level the unit and ensure that the unit is adequately anchored.
Consult local codes for rooftop mounting requirements.
Outdoor Unit Clearance

20
6LQJOH=RQH+LJK(I¿FLHQF\6WDQGDUG([WHQGHG3LSHDQG0HJD:DOO0RXQW,QVWDOODWLRQ0DQXDO
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Required Clearances
Figure 4: Outdoor Unit Clearances
12
28 24
12
24
Unit: Inch
Do not place the unit where animals and/or plants will be in the path of the warm air, or where the warm air and/or noise will disturb
neighbors.
Figure 5: Outdoor Unit Sunroof/Awning Clearances
More than
12
More than
12
Sunroof
Fence or
obstacles
More than
28 Unit: Inch
More than
24
Indoor Unit Clearance
Follow recommended best practices when choosing an indoor location for the Single
Zone Wall-Mounted indoor unit.
• Keep unit away from any indoor steam or excessive heat.
•No obstacles should be placed around unit.
• Condensation drain (leakage piping) should be routed away from the unit.
•Do not install near a doorway.
• Clearance gap between any wall or enclosure and the left or right side of the unit
must be greater than 4 inches.
• From the top of the unit to the ceiling there must be greater than 5 or 8 inches of
clearance (depending on indoor unit model).
• Unit should be at least 6.5 feet from the Àoor for adequate clearance.
Figure 6: Clearances Where There Are Obstacles on Both Air
Inlet and Outlet Sides (Obstacle on the Outlet Side is Lower
Than the Outdoor Unit)
Figure 7: Clearances Where There are Obstacles Above and on Both Air Inlet
and Outlet Sides (Obstacle on the Outlet Side is Lower Than the Outdoor Unit)
Minimum
28
Minimum
12
Unit: Inch
Minimum
12
79
24
Minimum 28
Unit: Inch
Figure 8: Single Zone Indoor Unit Clearance
Requirements
Minimum clearance
from ceiling - “A”
More than 4 inches
More than
4 inches
At least 6.5 feet from the floor
“A” Ceiling Clearance (inches) Indoor Unit Model(s)
5 LSN090-120HEV1, LSN091~121HSV3
8 LSN181~240HSV3, LS307-360HV3, LSN240~360HLV, LSN90~240HEV, LSN180-240HEV1, LSN090-120HXV
Table 13: Indoor Unit Ceiling Clearance