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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

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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

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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

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-

ed or submerged.

There is risk of 

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re, electric shock, physical injury or death.

Use a dedicated power source for this product.

There is risk of 

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re, electric shock, physical injury or death.

Do not operate the disconnect switch with wet hands.

There is risk of 

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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  

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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 

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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.

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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