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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 

E

y the user may result in water lea

N

a

J

e, 

¿

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, causin

J

 

¿

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

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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

Summary of Contents for LS090H

Page 1: ...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 ...

Page 2: ...cautions 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...

Page 3: ...y 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...

Page 4: ...ke 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 Th...

Page 5: ...se 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 build...

Page 6: ...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 phy...

Page 7: ... 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...

Page 8: ...rk of LG Corp GENERAL DATA Single Zone Wall Mount Indoor and Outdoor Units LS N 091 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 Fam...

Page 9: ... 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 1 Power Input is rated at high speed 2 Take appropriate acti...

Page 10: ...re it engages at the bottom 6 Using a phillips screwdriver reattach the screws to the bottom panel and secure 7 Once screws are in place re snap the latches over the screws Refer back to Figure 87 as an example 8 If all other piping and electrical wiring to the outside unit has been completed at this stage you can turn the system on to test If you have not completed the piping connections do not t...

Page 11: ...ample of how a circuit breaker should be wired through to the Single Zone system Be sure there is no power going through the Single Zone system before proceed ing with these connections as it may result in electric shock Familiarize yourself with the location of the circuit breaker and be sure that all power is cut to the Single Zone unit as it may result in electric shock 1 Using a phillips head ...

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