LG Mega LS120HEV2 User manual

Single Zone Mega: LS090HEV2, LS120HEV2, LS180HEV2, LS240HEV2
Single Zone Mega 115V: LS090HXV2, LS120HXV2
SINGLE ZONE MEGA AND MEGA 115V
WALL MOUNTED
INSTALLATION MANUAL

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.
Do not throw away, destroy, or lose this manual.
Please read carefully and store in a safe place for future reference.
Content familiarity required for proper installation.
A summary list of safety precautions begins on page 3.
For more technical materials such as submittals, engineering
databooks, and catalogs, visit www.lghvac.com.
For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice.
©LG Electronics U.S.A., Inc.
This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc.
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and
other materials are the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc., only in confidence.
This document is for design purposes only.

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 or remove the unit by yourself (end user).
Ask the dealer or an LG trained service provider to install the
unit.
,PSURSHU LQVWDOODWLRQ E\ WKH XVHU ZLOO UHVXOW LQ ZDWHU OHDNDJH ¿UH
explosion, electric shock, physical injury or death.
For replacement of an installed unit, always contact an LG
trained service provider.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNH[SORVLRQDQGSK\VLFDOLQMXU\RUGHDWK
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 will
HQWHUWKHXQLWFDXVLQJ¿UHHOHFWULFVKRFNDQGSK\VLFDOLQMXU\RUGHDWK
Always check for system refrigerant leaks after the unit has
been installed or serviced.
Exposure to high concentration levels of refrigerant gas will lead to illness
or death.
Wear protective gloves when handling equipment. Sharp
edges will cause personal injury.
Dispose the packing materials safely.
• Packing materials, such as nails and other metal or wooden parts,
will cause puncture wounds or other injuries.
• Tear apart and throw away plastic packaging bags so that children do
not play with them and risk suffocation and death.
Install the unit considering the potential for strong winds or
earthquakes.
Improper installation will 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
VSHFL¿HGE\/*DUHXVHGWKHUHLVULVNRI¿UHHOHFWULFVKRFNH[SORVLRQ
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XQLW
7KHUHLVULVNRI¿UHH[SORVLRQDQGSK\VLFDOLQMXU\RUGHDWK
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 must not be completed.
DANGER

4
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
SAFETY INSTRUCTIONS
INSTALLATION - CONTINUED
Don’t install the unit where it’s directly exposed to ocean
winds.
Ocean winds will cause corrosion, particularly on the condenser and
HYDSRUDWRU¿QVZKLFKLQWXUQ FRXOG FDXVH SURGXFW PDOIXQFWLRQ RULQHI-
¿FLHQWSHUIRUPDQFH
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 will 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
will 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VXႈFLHQWSURWHFWLRQDJDLQVWHOHFWULFDOQRLVH
Inverter equipment, power generators, high-frequency medical equipment,
or radio communication equipment will cause the air conditioner to operate
improperly. The unit will 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 will 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 will 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. Failure to follow these directions will result in minor or moderate physical injury.
• 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.
7XUQWKHSRZHURႇDWWKHQHDUHVWGLVFRQQHFWEHIRUHVHUYLFLQJ
the equipment.
Electrical shock can cause physical injury or death.
Properly size all circuit breakers or fuses.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNH[SORVLRQSK\VLFDOLQMXU\RUGHDWK
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 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-
IRUPHGSURSHUO\LWZLOOUHVXOWLQ¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Refer to local, state, and federal codes, and use power wires
RIVXႈFLHQWFXUUHQWFDSDFLW\DQGUDWLQJ
:LUHVWKDWDUHWRRVPDOOZLOOJHQHUDWHKHDWDQGFDXVHD¿UH
6HFXUHDOO¿HOGZLULQJFRQQHFWLRQVZLWKDSSURSULDWHZLUH
strain relief.
Improperly securing wires will create undue stress on equipment power
OXJV,QDGHTXDWHFRQQHFWLRQVZLOOJHQHUDWHKHDWFDXVHD¿UHDQGSK\VLFDO
injury or death.
7KHLQIRUPDWLRQFRQWDLQHGLQWKLVPDQXDOLVLQWHQGHGIRUXVHE\DQLQGXVWU\TXDOL¿HGH[SHULHQFHGFHUWL¿HGHOHFWULFLDQIDPLO-
iar 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 and property damage,.

6
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
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.
Do not block the inlet or outlet.
Unit will 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.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Use a dedicated power source for this product.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Do not operate the disconnect switch with wet hands.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Periodically verify that the hardware securing the unit has
not deteriorated.
If the unit falls from its installed location, it can cause property damage,
product failure, 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,
DQG WKH V\VWHP GHYHORSV D UHIULJHUDQW OHDN LW ZLOO FDXVH ¿UH HOHFWULF
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.
7KHUHLVULVNRI¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK
Avoid excessive cooling, and periodically perform venti-
lation to the unit.
Inadequate ventilation is a health hazard.
Do not touch the refrigerant piping during or after
operation.
It can cause burns or frostbite.
Do not operate the unit with the panel(s) or protective
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
TXDOL¿HGSHUVRQVLQRUGHUWRDYRLGSK\VLFDOLQMXU\DQGRUHOHFWULFVKRFN
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.

7
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 ............................................................................. 3-6
General Data ..................................................................................... 8-12
Unit Nomenclature............................................................................... 8
Parts .................................................................................................... 9
6SHFL¿FDWLRQV ............................................................................... 10-11
Electrical............................................................................................ 12
General Installation Guidelines.....................................................13-24
Outdoor Unit Location Selection................................................... 13-15
Required Outdoor Unit Clearances ................................................... 16
Rigging and Lifting / Outdoor Unit Mounting................................. 17-18
Indoor Unit Location Selection / Required Clearances...................... 19
Indoor Unit Mounting .................................................................... 20-24
General Refrigerant Piping System Information ......................... 25-34
Refrigerant Safety Standards ............................................................ 25
Device Connection Limitations .......................................................... 25
Selecting Field Supplied Piping......................................................... 26
Copper Expansion and Contraction.............................................. 27-28
Piping Materials and Handling........................................................... 29
Refrigerant System Engineering................................................... 30-32
Flaring and Brazing Procedures................................................... 33-34
Refrigerant Piping Connections.................................................... 35-46
Installation Overview ......................................................................... 35
Special Applications........................................................................... 36
Outdoor Unit Connections ................................................................. 37
Indoor Unit Connections............................................................... 38-40
Outdoor Unit Drain Piping / Indoor Unit Drain Hose..................... 41-43
Bundling............................................................................................. 43
Insulation ...................................................................................... 44-45
6DIHW\*XLGHOLQHV&RQQHFWLRQVDQG6SHFL¿FDWLRQV ......................... 46
Electrical System Installation........................................................47-55
Safety Guidelines .............................................................................. 47
&RQQHFWLRQVDQG6SHFL¿FDWLRQV ................................................... 48-50
Controller Options.............................................................................. 51
Indoor Unit Electrical Connections ............................................... 52-53
Outdoor Unit Electrical Connections............................................. 54-55
Final Installation Procedures ........................................................ 56-65
Triple Leak / Pressure Test ........................................................... 56-57
Deep Evacuation Test................................................................... 57-58
Triple Evacuation Test................................................................... 58-59
Refrigerant Trim Charge, Finishing the Job....................................... 60
Reattaching the Indoor Unit Bottom Cover........................................ 61
Air Filter Disassembly and Assembly ................................................ 62
Installing Batteries, Test Run, Performance Evaluation..................... 63
Installer Mode, Cooling Only Mode ................................................... 64
Pump Down Procedure ..................................................................... 65
Troubleshooting ............................................................................. 66-70
LG SIMS - Self Diagnosis Functions ........................................... 66-67
Error Codes ................................................................................. 68-69
Refrigerant Leaks .............................................................................. 70
Installation Checklist........................................................................... 71

8
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
Unit Nomenclature
Single Zone Wall Mount Indoor and Outdoor Units
LS N090 HEV 2
Type
N = Indoor Wall Mount Unit
U = Outdoor Heat Pump Unit
No N or U = System
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 = 9,000
120 = 12,000
180 = 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

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
Parts
Part Quantity Image
Installation Plate One (1)
Type “A” Screws Five (5)
Type “B” Screws Two (2)
Type “C” Screws Two (2)
Type “D” Screws Two (2)
Type “E” Screws One (1)
Bracket One (1)
Wireless
Controller with Holder One (1)
• Connecting cable (power and control)
• Pipes - vapor line and liquid line, with insulation
• Insulated drain hose
• Additional drain hose
• Level
• Screwdriver
• Electrical lineman pliers
• Electric drill
• Hole saw
• Drill
• Flaring tool set
• Tubing cutter
• Tube/pipe reamer
• Torque wrenches
• Allen wrench
• Gas-leak detector
• Thermometer
• Measuring tape
• Multimeter
• Ammeter
Required Tools (field provided)
Required Parts (field provided)
Included Parts (Depends on Model)
Mega 18,000 and 24,000
Mega 9,000 and 12,000
Mega 115V 9,000 and 12,000

10
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
Table 1: 6LQJOH=RQH0HJD6\VWHP6SHFL¿FDWLRQV
0HJD6SHFL¿FDWLRQV
System Model Number (IDU/ODU) LS090HEV2 (LSN090HEV2/
LSU090HEV2)
LS120HEV2
(LSN120HEV2/
LSU120HEV2)
LS180HEV2
(LSN180HEV2/
LSU180HEV2)
LS240HEV2
(LSN240HEV2/
LSU240HEV2)
Cooling Capacity (Min/Rated/Max) (Btu/h) 3,070 ~ 9,000 ~10,330 3,070 ~ 12,000 ~ 13,780 3,685 ~ 18,000 ~ 18,493 3,685 ~ 22,000 ~ 24,000
Cooling Power Input1(kW) 0.72 1.142 1.5 2.0
Heating Capacity (Min/Rated/Max) (Btu/h) 3,070 ~ 10,900 ~ 12,520 3,070 ~ 12,000 ~ 13,780 3,685 ~ 19,000 ~ 22,997 3,685 ~ 22,000 ~25,260
Heating Power Input1(kW) 0.875 1.000 1.583 1.93
COP 12.46 12.00 12.00 11.40
Max. Heating Capacity (Btu/h)
Outdoor 17°F (WB)/Indoor 70°F (DB) 8,760 (80%) 9,640 (80%) 15,270 (80%) 17,680 (80%)
EER 12.5 10.51 12.00 11.00
SEER 20.0 19.0 19.0 19.0
HSPF 10.0 9.5 10.0 9.5
Power Supply (V/Hz/Ø) 208-230/60/1
Outdoor Unit Operating Range
Cooling (°F DB) 14 to 118
Heating (°F WB) 14 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 Type2R410A
Refrigerant Control EEV
IDU Sound Pressure3dB(A) (H/M/L/Sleep) 42 / 36 / 28 / 21 42 / 36 / 28 / 21 48 / 43 / 38 / 32 48 / 43 / 38 / 32
ODU Sound Pressure3dB(A) 50 50 55 55
Unit Weight (lbs)
IDU (Net / Shipping) 19.2 / 25.4 19.2 / 25.4 26 / 30 26 / 30
ODU (Net / Shipping) 55.3 / 60 55.3 / 60 98.1 / 108 98.1 / 108
Power/Communication Cable4 (No. x AWG) 4 x 14
Compressor
Compressor Type (Qty) Twin Rotary (1)
Fan
Indoor Unit Type (Qty) Cross Flow (1)
Outdoor Unit Type (Qty) Propeller (1)
Motor/Drive Brushless Digital Controlled/Direct
Airflow Rate
Indoor Unit Max/H/M/L (CFM) 459 / 353 / 264 / 148 459 / 353 / 264 / 148 689 / 512 / 459 / 371 689 / 512 / 459 / 371
Outdoor Unit (Max. [CFM]) 953 953 1,730 1,730
Piping
Liquid Line (in, OD) 1/4 1/4 1/4 1/4
Vapor Line (in, OD) 3/8 3/8 1/2 1/2
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 0.26 0.26
Pipe Length5(Minimum/Maximum)(ft) 9.8 / 49.2 9.8 / 49.2 9.8 / 65.6 9.8 / 65.6
Piping Length5(no add’l refrigerant, ft) 24.6 24.6 24.6 24.6
Max Elevation Difference (ft) 23 23 32.8 32.8
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
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).
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 3745.
4All communication / connection (power) cable from the outdoor unit to the indoor unit is field supplied
and must be a minimum of four-conductor, 14 AWG, stranded, shielded or unshielded (if shielded, it
must be grounded to the chassis of the outdoor unit only), and must comply with applicable local and
national codes. For detailed electrical information, please refer to electric characteristics on page 12.
5Piping lengths are equivalent.

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
0HJD96SHFL¿FDWLRQV
Table 2: 6LQJOH=RQH0HJD96\VWHP6SHFL¿FDWLRQV
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
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).
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 3745.
4All communication / connection (power) cable from the outdoor unit to the indoor unit is field supplied
and must be a minimum of four-conductor, 14 AWG, stranded, shielded or unshielded (if shielded, it
must be grounded to the chassis of the outdoor unit only), and must comply with applicable local and
national codes. For detailed electrical information, please refer to electric characteristics on page 12.
5Piping lengths are equivalent.
System Model Number (IDU/ODU) LS090HXV2 (LSN090HXV2/LSU090HXV2) LS120HXV2 (LSN120HXV2/LSU120HXV2)
Cooling Capacity (Min/Rated/Max) (Btu/h) 3,070 ~ 9,000 ~ 10,330 3,070 ~ 12,000 ~ 13,780
Cooling Power Input1(kW) 0.732 1.142
Heating Capacity (Min/Rated/Max) (Btu/h) 3,070 ~ 10,900 ~ 12,520 3,070 ~ 12,000 ~ 13,780
Heating Power Input1(kW) 0.875 1.000
COP 3.65 3.52
EER 12.30 10.51
SEER 20 19
HSPF 10 9.5
Power Supply (V/Hz/Ø) 115/60/1
Outdoor Unit Operating Range
Cooling (°F DB) 14 to 118
Heating (°F WB) 14 to 65
Indoor Unit Operating Range
Cooling (°F WB) 53 to 75
Heating (°F DB) 60 to 86
Indoor Temperature Setting Range
Cooling (°F) 65 to 86
Heating (°F) 60 to 86
Unit Data
Refrigerant Type2R410A
Refrigerant Control EEV
IDU Sound Pressure3dB(A) (H/M/L/Sleep) 42 / 36 / 28 / 21 42 / 36 / 28 / 21
ODU Sound Pressure3dB(A) 50 50
Unit Weight (lbs)
IDU (Net/Shipping) 19.2 / 22 19.2 / 22
ODU (Net/Shipping) 58.4 / 60 58.4 / 60
Power/Communication Cable4 (No. x AWG) 4 x 14
Compressor
Compressor Type (Qty) 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) 459 / 353 / 264 / 148 459 / 353 / 264 / 148
ODU Max (CFM) 953 953
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(Minimum/Maximum)(ft) 9.8 / 49.2 9.8 / 49.2
Piping Length5(no add’l refrigerant, ft) 24.6 24.6
Max Elevation Difference (ft) 23 23

12
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
Electrical
Nominal
Tons
Unit Model
No. Hertz Voltage
Voltage
Range (Min.
to Max.)
MCA MOP
Com-
pressor
Quantity
Compressor Motor
RLA
Outdoor Fan
Motor Indoor Fan Motor
Cooling Heating W FLA W FLA
3/4 LS090HEV2
60 208 - 230 187 - 253
10.0 15 1 7.0 7.0 43 0.4 30 0.4
1 LS120HEV2 10.0 15 1 7.0 7.0 43 0.4 30 0.4
1-1/2 LS180HEV2 15.0 20 1 10.0 10.0 85 0.4 58 0.4
2 LS240HEV2 15.0 20 1 10.0 10.0 85 0.4 58 0.4
Table 3: 208-230V, 60Hz, 1-Phase Single-Zone Mega System Electrical Data Table.
Table 4: 115V, 60Hz, 1-Phase Single Zone Single-Zone Mega 115V System Electrical Data Table.
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
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.
RLA = Rated Load Amps.
FLA = Full Load Amps.
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
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.
RLA = Rated Load Amps.
FLA = Full Load Amps.
Nominal
Tons
Unit Model
No. Hertz Voltage
Voltage
Range (Min.
to Max.)
MCA MOP
Com-
pressor
Quantity
Compressor Motor
RLA
Outdoor Fan
Motor Indoor Fan Motor
Cooling Heating W FLA W FLA
3/4 LS090HXV2 60 115 98-132 15 25 1 11.0 11.0 43 0.4 30 0.4
1 LS120HXV2 15 25 1 11.0 11.0 43 0.4 30 0.4

13
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
Selecting the Best Location for the Outdoor Unit
DANGER
• Do not install the unit in an area where combustible gas will generate, flow, stagnate, or leak. These conditions can cause a fire, resulting
in bodily injury or death.
• 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.
When deciding on a location to place the outdoor unit, be sure to choose an area where run-off water from defrost cycle will not accumulate and freeze
on sidewalks or driveways, which will create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, crack-
ing, leaking, and causing unsafe conditions from frozen condensate.
Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it. Vermin and unauthorized individuals will cause
D¿UHHOHFWULFVKRFNSK\VLFDOLQMXU\RUGHDWK)ROORZWKHSODFHPHQWJXLGHOLQHVVHWIRUWKLQ³&OHDUDQFH5HTXLUHPHQWV´
Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it. Vermin and unauthorized individuals will
GDPDJHWKHXQLW)ROORZWKHSODFHPHQWJXLGHOLQHVVHWIRUWKLQ³&OHDUDQFH5HTXLUHPHQWV´
Select a location for installing the outdoor unit that will meet the following conditions:
• Where there is enough structural strength to bear the weight of the unit.
• A location that allows for optimum air flow and is easily accessible for inspection, maintenance, and service.
• Where piping between the outdoor unit and indoor unit is within allowable limits.
• Include space for drainage to ensure condensate flows properly out of the unit when it is in heating mode. Avoid placing the outdoor
unit in a low-lying area where water could accumulate.
• 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).
Do Not’s
• Where it will be subjected to direct thermal radiation from other heat sources, or an area that would expose the outdoor unit to heat or steam
like discharge from boiler stacks, chimneys, steam relief ports, other air conditioning units, kitchen vents, plumbing vents, and other sources
of extreme temperatures.
• Where high-frequency electrical noise / electromagnetic waves will affect operation.
• Where operating sound from the unit will disturb inhabitants of surrounding buildings.
• Where the unit will be exposed to direct, strong winds.
• Where the discharge of one outdoor unit will blow into the inlet side of an adjacent unit (when installing multiple outdoor units).
Planning for Snow and Ice
To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or
severe windchill 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 sys-
tem will malfunction.
3. Remove any snow that has accumulated four (4) inches or more on the top of the outdoor unit.
4. In climates that can experience significant snow buildup, mount the outdoor unit on a raised, field-provided platform or stand. The raised
support platform must be high enough to allow the unit to remain above possible snow drifts, and must be higher than the maximum antici-
pated snowfall for the location.
5. Design the mounting base to prevent snow accumulation on the platform in front or back of the unit frame.
6. Provide a field fabricated snow protection hood to keep snow and ice and/or drifting snow from accumulating on the coil surfaces.
7. To prevent snow and heavy rain from entering the outdoor unit, install the condenser air inlets and outlets facing away from direct
winds.
8. Consider tie-down requirements in case of high winds or where required by local codes.
Outdoor Unit Location Selection

14
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Planning for Snow and Ice, continued.
The indoor unit will take longer to provide heat, or heating performance will be reduced in winter if the unit is installed:
Choose an area where run-off water from defrost cycle will not accumulate and freeze on sidewalks or driveways. Properly install and insulate any drain
hoses to prevent the hose from freezing, cracking, leaking, and damaging the outdoor unit.
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.
Outdoor Unit Location Selection
When deciding on a location to place the outdoor unit, be sure to choose an area where run-off water from defrost cycle will not accumulate and freeze
on sidewalks or driveways, which will create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, crack-
ing, leaking, and causing unsafe conditions from frozen condensate.
Tie-Downs and Lightning Protection
Tie-Downs
• The strength of the roof must be checked before installing the
outdoor units.
• If the installation site is prone to high winds or earthquakes, when
installing on the wall or roof, securely anchor the mounting base
using a field-provided tie-down configuration approved by a local
professional engineer.
• The overall tie-down configuration must be approved by a local
professional engineer.
Always refer to local code when using a wind restraint system.
Lightning Protection
• To protect the outdoor unit from lightning, it must be placed within
the specified lightning safety zone.
• Power cable and communication cable must be installed five (5) feet away from lightning rod.
• A high-resistance ground system must be included to protect against induced lightning or indirect strike.
Building Height (feet) 66 98 148 197
3URWHFWLRQ$QJOHÜ 55 45 35 25
If the building does not include lightning protection, the outdoor unit will be damaged from a lightning strike. Inform the customer of this possibility in
advance.
Ground
Safe zone
Lightning rod
3URWHFWLRQ$QJOHÛaÛ
5 feet
Lightning rod
Figure 1: Lightning Protection Diagram.
Table 5: Safety Zone Specifications.

15
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
• 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 must 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 will need to be applied to the outdoor
unit at oceanside locations.
Ocean winds will cause corrosion, particularly on the condenser and
HYDSRUDWRU¿QVZKLFKLQWXUQFRXOGFDXVHSURGXFWPDOIXQFWLRQRULQHI-
¿FLHQWSHUIRUPDQFH
Oceanside Applications
Use of a Windbreak to Shield from Sea Wind
Use of a Building to Shield from Sea Wind
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 must be placed on the side of the building directly opposite
to the direction of the wind as shown at right.
Figure 2: Oceanside Placement Using Windbreak.
Figure 3: Placement Using Building as Shield.
Sea wind
Windbreak
Sea wind
Sea wind
Building
Building
Outdoor Unit Location Selection

16
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Required Outdoor Unit Clearances
Mega and Mega 115V Outdoor Unit Service Access and Allowable Clearances
Specific clearance requirements in the diagram below are for all Mega outdoor units. The figure below 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 Cases 1 and 2) for height in relation to the unit. To have successful service access to the outdoor unit, see the figure below for
minimum spacing. When installing multiple outdoor units, see Cases 4 and 5 for correct spacing requirements.
Figure 4: Single Zone Mega and Mega 115V Outdoor Unit Service Access and Allowable Clearances Diagram.
Unit: Inch A B C D E F G
Case 1 Standard 12 24 - 12 - - -
Minimum 410- 4 - -40
Case 2 Standard --20----
Minimum - - 14 - - - 40
Case 3 Standard - - 20 12 - - -
Minimum --144---
Case 4 Standard ---1224--
Minimum ---4879-
Case 5 Standard -24-12- - -
Minimum -10- 4 - - -
Table 6: Single Zone Mega and Mega 115V Outdoor Unit Service Access and Allowable Clearances Diagram Legend.
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.
If the outdoor unit is installed between standard and minimum clearances, capacity decreases approximately 10%.
Minimum Allowable Clearance and Service Access Requirements
Proper clearance for the outdoor unit coil is critical for proper operation. When installing the outdoor unit, consider service, inlet and outlet,
and minimum allowable space requirements as illustrated in the diagrams below.
• Include enough space for airflow and for service access. If installing multiple outdoor units, avoid placing the units where the discharge
of one unit will blow into the inlet side of an adjacent unit.
• If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that the discharge air of the outdoor unit isn’t restricted.
• No obstacles to air circulation around the unit; keep proper distances from ceilings, fences, floor, walls, etc. (Install a fence to prevent
pests from damaging the unit or unauthorized individuals from accessing it.)
A
BD
G
C
G
C
D
E
D
D
B
B
F
1/16 inch
20 inches or less
Case 1
Case 4
Case 2 Case 3
Case 5
20 inches or less

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
Rigging and Lifting / Outdoor Unit Mounting
Rigging and Lifting Instructions
Wear protective gloves and safety goggles when handling equipment. Sharp edges will cause personal injury.
Dispose of the packing materials safely.
• Packing materials, such as nails and other metal or wooden parts, will cause puncture wounds or other injuries.
• Tear apart and throw away plastic packaging bags so that children do not play with them and risk suffocation and death.
• Be very careful when transporting the product. There is a risk of the product falling and causing physical injury.
• Use appropriate moving equipment to transport each frame; ensure the equipment is capable of supporting the weights listed.
• Some products use polypropylene bands for packaging. Do not use polypropylene bands to lift the unit.
• Support the outdoor unit at a minimum of four points to avoid slippage from rigging apparatus.
• Make sure the outdoor unit is in its original packaging to avoid damage during local transport.
• At the time of delivery, the package must be checked for any damage (exterior and interior). Report any damage to the carrier claims agent
immediately.
• Handle the outdoor unit with care. Keep the outdoor unit upright to avoid damaging inside components.
• If a forklift is to transport the outdoor unit, the forklift arms must pass through the openings at the bottom.
• If a crane is to suspend the outdoor unit, it is required that two (2) ropes at least twenty-three (23) feet in length be used. Pass the ropes under
the unit. Pass the rope through the two (2) forklift slots each at the front and rear of the outdoor unit.
• 7RSUHYHQWGDPDJHWRWKHRXWGRRUXQLWDOZD\VOLIWWKHXQLWZLWKWKHURSHVDWWDFKHGDWIRXUSRLQWVDWDQDQJOHRI
• Always include padding to protect the outdoor unit from rope damage, and take into consideration the outdoor unit’s center of gravity.
General Outdoor Unit Mounting
Any underlying structure or foundation must be designed to support
the weight of the outdoor unit. Avoid placing the unit in a low
lying area where water and ice will accumulate. Securely attach the
outdoor unit to a condenser pad, base rails, or a mounting platform
that is solidly anchored to the ground or building structure. When
installing the outdoor unit on the wall or roof top, securely anchor the
mounting base to account for wind, earthquakes, or vibration.
Anchoring the Outdoor Unit
• Tightly anchor the outdoor unit with a bolt and nut to a concrete or
rigid platform (see next page for more details).
• When installing on a wall (with field-supplied brackets), roof, or
rooftop, securely anchor the mounting platform with nails, taking
into consideration the possibility of strong winds or earthquakes.
• If there is a possibility of vibration from the outdoor unit transmit-
ting to the building, add an anti-vibration material.
Follow applicable local codes for clearance, mounting, anchor and vibration attenuation requirements.
Figure 5: Examples of Outdoor Unit Mounting Methods.

18
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Model
Foundation (Inches) Leg
Thickness
(Inches)
ABC
LSU090HEV2,
LSU120HEV2;
LSU090HXV2,
LSU120HXV2
18-7/32 Minimum 4 11-1/32 1/16
LSU180HEV2,
LSU240HEV2 23-1/16 Minimum 4 15-3/4 1/16
Concrete Platform Specifications
• Concrete foundations must be made of one part cement, two parts sand, and four parts gravel.
• The surface of the foundation must be finished with mortar with rounded edges, and weatherproofed.
$OOUHIHUHQFHGPDWHULDOVDUHWREH¿HOGVXSSOLHG,PDJHVDUHQRWWRVFDOH
B
AC
M10
Anchor Bolt
Min. 3 to 5 inches
Min. 1
inches
Bolt
Placement
& Anti-Vibration
Pad
Piping Connection
Top of Unit
Foundation
Bolting the Outdoor Unit to the Platform
1. Ensure that the concrete platform will not degrade easily, and
has enough structural strength to bear the weight of the unit.
2. Include an H-beam support. Firmly attach the corners, otherwise
the support will bend.
3. Use a hexagon nut.
4. Use anti-vibration material.
5. Include enough space around the concrete foundation for con-
densate drainage.
6. Seal all wiring and piping access holes to prevent insects from
entering the unit.
Figure 6: Example of Using an Insert for a Hole
in a Reinforced Concrete Beam.
Outdoor Unit Platform Dimensional Requirements
Figure 7: Close up of Bolt Attachment.
Figure 8: Single Zone Mega and Mega 115V Wall Mount Outdoor Units
(Appearances Will Vary Depending on Model).
Table 7: 0HJDDQG0HJD92XWGRRU8QLW)RXQGDWLRQ6SHFL¿FDWLRQV
Figure 9: Bolting the Outdoor Unit to the Platform (Piping Location Will
Differ Depending on Outdoor Unit Model).
Concrete Beam
Insert
Suspension Bolt
Polyblock /
Anti-Vibration
Material
Nail Securing
Polyblock
Outdoor Unit Mounting
5HYLHZWKHVSHFL¿FDWLRQVIRU¿HOGVXSSOLHGSDGPRXQWVRUEUDFNHWVWRYHU-
ify that outdoor dimension requirements are met.

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
Selecting the Best Location for the Indoor Unit
Follow recommended best practices when choosing an indoor location for the single
zone indoor unit.
Dos
• Follow the table at right for minimum clearance of indoor unit from the top of
the unit to the ceiling.
• Clearance gap between any wall or enclosure and the left or right side of the
unit must be greater than 4 inches. Ensure there is sufficient maintenance
space.
• Unit must be at least 6-1/2 feet from the floor for adequate clearance.
• Place the unit where drainage can be obtained easily. Condensation drain
must be conveniently routed away from the unit.
• Locate the indoor unit in a location where it can be easily connected to the
outdoor unit within allowable limits.
• Use a metal detector to locate studs in the walls. Anchor unit following stud
location to prevent damage to the wall.
Do Not’s
• Do not install the unit near a heat or steam source, or where considerable
amounts of oil, iron powder, or flour are used. (These materials will generate condensate, cause a reduction in heat exchanger efficiency, or
the drain to malfunction. If this is a potential problem, install a ventilation fan large enough to vent out these materials.)
• Ensure there are no obstacles to air circulation around the unit; keep proper distances from ceilings, doorways, floor, walls, etc.
• Do not install in an area where operation sound will disturb occupants--place the unit where noise prevention is taken into consideration
• Do not install near doorway.
• Avoid installing the unit near high-frequency generators.
Figure 10: Mega Indoor Unit Clearance Requirements.
Ceiling Clearance (inches) Indoor Unit Model(s)
8
LSN090HEV2, LSN120HEV2,
LSN180HEV2, LSN240HEV2
LSN090HXV2, LSN120HXV2
Table 8: Mega Indoor Unit Ceiling Clearance.
>4 (100)
Unit: Inch (mm)
>4 (100)
>8 (200)
At least 6-1/2 feet from the floor
7KHXQLWPXVWQRWEHLQVWDOOHGZKHUHVXOIXULFDFLGDQGÀDPPDEOHRUFRU-
URVLYHJDVHVDUHJHQHUDWHGYHQWHGLQWRRUVWRUHG7KHUHLVULVNRI¿UH
explosion, and physical injury or death.
7KHXQLWZLOOEHGDPDJHGZLOOPDOIXQFWLRQDQGRUZLOOQRW
operate as designed if installed in any of the conditions
listed.
• Indoor units (IDUs) must not be placed in an environment where the IDUs will be exposed to harmful volatile organic compounds (VOCs) or in
environments where there is improper air make up or supply or inadequate ventilation. If there are concerns about VOCs in the environment
where the IDUs are installed, proper air make up or supply and/ or adequate ventilation must be provided. Additionally, in buildings where
IDUs will be exposed to VOCs consider a factory-applied epoxy coating to the fan coils for each IDU.
• If the unit is installed near a body of water, the installation parts are at risk of corroding. Appropriate anti-corrosion methods must be taken for
the unit and all installation parts.
Installing in an Area Exposed to Unconditioned Air
In some installation applications, areas (floors, walls) in some rooms will be exposed to unconditioned air (room may be above or next to an
unheated garage or storeroom). To countermeasure:
• Verify that carpet is or will be installed (carpet will increase the temperature by three [3] degrees).
• Add insulation between the floor joists.
• Install radiant heat or another type of heating system to the floor.
Install a ventilation fan
with sufficient capacity
Heat or steam source
Include enough
distance
Indoor Unit
Figure 11: Installing Near a Heat or Steam Source.
Indoor Unit Location Selection / Required Indoor Unit Clearances

20
Single Zone Mega and Mega 115V Wall Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Drilling the Piping Hole in the Wall
Follow all piping clearance recommendations.
1. Using a 2-9/16 inch hole core drill bit, drill a hole at either the right or left side of the
wall mounting, pre-chosen following installation guidelines and application needs.
• The slant of the hole must be 3/16” to 5/16 inches from level with the slant being
upward on the indoor unit side and downward on the outdoor unit side.
2. Finish off the newly drilled hole as shown with bushing and sleeve covering to pre-
vent damage to the insulation and piping.
(3/16"~5/16")
Indoor
WALL
Outdoor
Bushing
Core Drill
Sleeve
Figure 14: Mega 115V Wall Mount Indoor Unit Installation Plate Dimensions.
Indoor Unit Mounting
Mounting the Installation Plate to the Wall
Follow the procedure below and general best practices when mounting the indoor unit’s installation plate to a wall.
1. Depending on the model, the wall mounted indoor unit is shipped with the installation plate attached to its back. To remove, unscrew the
one (1) screw that holds the installation plate to the back of the indoor unit.
2. Align the centerline using a leveling tool. Measure the wall and mark the centerline.
3. Attach the installation plate to the wall following the measurements and marks. Use the type “A” screws that are factory-supplied with the
plate. If mounting the unit on a concrete wall, use field-supplied anchor bolts.
4. Observe all rear piping clearances when drilling into the wall.
• When choosing a location for the wall mount plate, be sure to take into consideration routing of wiring for power outlets within the wall.
Contacting wiring can cause serious bodily injury or death.
• Use caution when drilling holes through the walls for the purposes of piping connections. Power wiring can cause serious bodily injury or death.
Select the location carefully. Unit must be anchored to a strong and solid wall to prevent unnecessary vibration.
Figure 12: Drilling Piping Hole.
Figure 13: Mega 115V Wall Mount Indoor Unit Installation Plate.
Installation Plate
32-15/16 (837)
2-15/32 (63)
12-1/16 (306) 3-21/32 (93)
10-11/32 (263)
5-31/32 (152)
3-27/32 (98)
5-9/32 (134)
12-1/8 (308)
3-11/16 (94)
7-5/8 (194)
Unit Outline
29/32 (23)
Ø2-9/16 (65)
5-19/32 (142)
Ø2-9/16 (65)
7-27/32 (199)
29/32 (23)
2-15/32 (63)
2-17/32 (64)
Figure 15: Mega 9 and 12K Wall Mount Indoor Unit Installation
Plate.
Figure 16: Mega 9 and 12K Wall Mount Indoor Unit Installation Plate Dimen-
sions.
Installation Plate
Chassis
Hook
Type "A" Screws
Installation Plate
Chassis
Hook
Type "A" Screws
Installation Plate
32-15/16 (837)
2-15/32 (63)
12-1/16 (306) 3-21/32 (93)
10-11/32 (263)
5-31/32 (152)
3-27/32 (98) 5-9/32 (134)
12-1/8 (308)
3-11/16 (94)
7-5/8 (194)
Unit Outline
29/32 (23)
Ø2-9/16 (65)
5-19/32 (142)
Ø2-9/16 (65)
7-27/32 (199)
29/32 (23)
2-15/32 (63)
2-17/32 (64)