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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

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 

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ns, which, in turn could cause product malfunction or inef-

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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 

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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. 

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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.

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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