LG Electronics LS360HLV LG Air Conditioner Cooling Area, User Manual

SINGLE ZONE HIGH EFFICIENCY, STANDARD,

EXTENDED PIPE, AND MEGA WALL MOUNTED

INSTALLATION MANUAL

Single Zone High Efciency:

LS091HSV3, LS121HSV3, LS181HSV3, LS240HSV3

Single Zone Standard: LS307HV3, LS360HV3

Single Zone Extended Pipe: LS240HLV, LS300HLV, LS360HLV

Single Zone Mega: LS090HEV, LS120HEV, LS180HEV, LS240HEV

Single Zone Mega 115V: LS090HXV, LS120HXV

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.

IM-WallMounted-ALL-08-14

Safety Instructions

Due to our policy of continuous product innovation, some specifications may change without notification.

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.

INSTALLATION

TABLE OF SYMBOLS

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.

Do not install, remove, or re-install the unit by yourself

(customer). Ask the dealer or an authorized technician to

install the unit.

Improper installation by the user may result in water leakage, re,

explosion, electric shock, physical injury or death.

For replacement of an installed unit, always contact an

authorized LG 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-condensible 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 equipment damage, refrigerant contamination, refriger-

ant loss, physical injury or death.

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.

Wear protective gloves when handling equipment. Sharp

edges may cause personal injury.

The unit is shipped with refrigerant and service valves

closed. Do not run the compressor with the service valves

closed.

There is a risk of equipment damage, explosion, physical injury, or death.

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.

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 unit damage, physical injury or death.

Do not install the unit on a defective stand.

There is a risk of property damage or physical injury.

Install the drain hose to ensure adequate drainage.

There is a risk of water leakage and property damage.

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

SAFETY INSTRUCTIONS

Don’t store or use ammable gas / combustibles near the unit.

There is risk of product failure, re, explosion, and physical injury or death.

It may result in an accident that causes product damage or personal injury

or death.

Periodically check that the outdoor frame is not damaged.

There is a risk of equipment damage, explosion, 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.

Replace all control box and panel covers.

If cover panels are not installed securely, dust, water and animals may

enter the water source unit, causing re, electric shock, and physical in-

jury or death.

Always check for system refrigerant leaks after the unit has

been installed or serviced.

Low refrigerant levels may cause product failure, and exposure to high

concentration levels of refrigerant gas may lead to illness or death. Keep

the unit upright during installation to avoid vibration or water leakage.

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 oor condition and / or water damage to

walls.

When installing the unit in a hospital, mechanical room, or

similar electromagnetic eld (EMF) sensitive environment,

provide sufcient protection against electrical noise.

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.

When connecting refrigerant tubing, remember to allow for

pipe expansion.

Improper piping may cause refrigerant leaks and system malfunction.

Do not install the unit in a noise sensitive area.

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.

INSTALLATION - CONTINUED

Safety Instructions

Due to our policy of continuous product innovation, some specifications may change without notification.

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.

The information contained in this manual is intended for use

by an industry-qualied, experienced, certied electrician

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

of sufcient current capacity and rating.

Wires that are too small may generate heat and cause a re.

Secure all eld wiring connections with appropriate wire

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.

WIRING

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

SAFETY INSTRUCTIONS

Do not provide power to or operate the unit if it is ooded 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.

Periodically verify the equipment mounts have not

deteriorated.

If the base collapses, the unit could fall and cause property damage,

product failure, physical injury or death.

If gas leaks out, ventilate the area before operating the unit.

Leaking gas may cause re, electric shock, explosion, physical injury or

death if the unit is mounted in an enclosed, low-lying, or poorly ventilated

area and the system develops a refrigerant leak.

Do not allow water, dirt, or animals to enter the unit.

There is risk of unit failure, 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 operation.

It can cause burns or frostbite.

Do not operate the unit with the panel(s) or protective

cover(s) removed; keep ngers and clothing away from

moving parts.

The rotating, hot, cold, and high-voltage parts of the unit can 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 removed. Do

not insert hands or other objects through the inlet or outlet

with the unit is plugged in. Do not touch the electrostatic

lter, if the unit includes one.

The unit contains sharp, rotating, hot, and high voltage parts that can

cause personal injury and / or electric shock.

To avoid physical injury, use caution when cleaning or

servicing the air conditioner.

Clean up the site after installation is nished, and check 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 re or electric shock due to dust or water.

OPERATION

Due to our policy of continuous product innovation, some specifications may change without notification.

TABLE OF CONTENTS

Safety Instructions ................................................................................ 3

General Data ..........................................................................................8

Unit Nomenclature ...............................................................................8

Single Zone High Efﬁ ciency Unit Speciﬁ cations ..................................9

Single Zone Standard Unit Speciﬁ cations ..........................................11

Single Zone Extended Pipe Unit Speciﬁ cations ................................ 13

Single Zone Mega Unit Speciﬁ cations ..........................................15-18

Single Zone Mega115V Unit Speciﬁ cations ....................................... 19

Electrical ............................................................................................21

R410A Refrigerant .............................................................................22

General Installation Guidelines ..........................................................23

Location Selection .............................................................................23

Oceanside Applications ..................................................................... 24

Mounting Bolt Location ......................................................................25

Required Clearances .........................................................................26

Mounting of Indoor Unit Installation Plate .....................................27-31

Mounting of Indoor Unit .....................................................................32

Piping Preparation .............................................................................33

Piping Materials and Handling ......................................................35-39

Piping Support, Elbow Usage ............................................................40

Refrigerant Piping System Layout .....................................................41

Refrigerant Piping Connections .........................................................42

Refrigerant Piping System Limitations ...............................................42

Installation Overview .........................................................................44

Directional Pipe Formation ................................................................45

Drain Hose .........................................................................................46

Outdoor Unit Connections ............................................................47-51

Indoor Unit Connections ....................................................................52

Indoor Unit Connections - Conduit Bracket Placement .....................53

Bundling and Cutting Line .................................................................54

Refrigerant Piping Insulation ........................................................55-57

Air Purging .........................................................................................58

Leak Test/Soap Method Check ..........................................................59

Evacuation of Lines ...........................................................................60

Finishing Up .......................................................................................60

Remote Controller .............................................................................61

Pump Down, Cooling Only Mode ......................................................62

Electrical Wiring ..................................................................................63

General Information and Safety Guidelines .......................................63

Power Wiring Speciﬁ cations and Best Practices ...............................64

Controllers ......................................................................................... 66

Indoor Unit Electrical Connections ...............................................67-71

Outdoor Unit Electrical Connections .............................................72-75

Self Diagnosis Functions ..................................................................76

LG SIMS - Self Diagnosis Functions ................................................78

Troubleshooting .................................................................................. 80

Error Codes .................................................................................80-82

Refrigerant Leaks ..............................................................................83

Installation Checklist ...........................................................................84

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Single Zone Wall Mount Indoor and Outdoor Units

N 091 HSV 3

Generation

3 = Third

Indoor/Outdoor Product

HSV = High Efficiency

HV = Standard

HLV = Extended Pipe

HEV = 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

Unit Nomenclature

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Single Zone High Efciency Unit Specications

Type Single Zone High Efciency Units

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 Input

(kW)

0.67 0.89 1.4 1.7

Nominal Heating Capacity (Btu/h)

10,800 13,300 22,000 27,600

Heating Power Input

(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 Range

Cooling (°F DB)

14-118

Heating (°F WB)

-4-75

Indoor Unit Operating Range

Cooling (°F)

64-90

Heating (°F)

60-86

Unit Data

Refrigerant Type

R410A

Refrigerant Control

EEV

IDU Sound Pressure

dB(A) (H/M/L)

38/33/24 39/33/24 45/40/35 46/43/39

ODU Sound Pressure

dB(A)

45 45 53 54

Power/Communication Cable

(No. x AWG)

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

Table 1: Single Zone High Efciency Unit Specications

EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit

Power Input is rated at high speed.

Low Ambient Wind Baffle Kit allows operation down to 0°F in cooling mode.

Take 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.

Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.

All power/communication cables to be minimum 18 AWG, 4-conductor, stranded, shielded and must

comply with applicable and national code.

Power wiring is field supplied 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).

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Type Single Zone High Efciency Units

System Model Number (IDU/ODU)

LS091HSV3

(LSN091HSV3/

LSU091HSV3)

LS121HSV3

(LSN121HSV3/

LSU121HSV3)

LS181HSV3

(LSN181HSV3/

LSU181HSV3)

LS240HSV3

(LSN240HSV3/

LSU240HSV3)

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

Max Pipe Length

(ft)

65.6 65.6 98.4 98.4

Piping Length

(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 Zone High Efciency Unit Specications - Continued

EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit

Piping lengths are equivalent.

Power wiring is field supplied 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).

Single Zone High Efciency Unit Specications

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Single Zone Standard Unit Specications

Table 2: Single Zone 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 Input

(kW)

3.0 4.0

Nominal Heating Capacity (Btu/h)

32,000 35,200

Heating Power Input

(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 Type

R410A R410A

Refrigerant Control

EEV EEV

IDU Sound Pressure

dB(A) (H/M/L)

49/44/39 49/44/39

ODU Sound Pressure

dB(A)

55 55

Power/Communication Cable

(No. x

AWG)

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

EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit

Power Input is rated at high speed.

Take 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.

Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.

All power/communication cables to be minimum 18 AWG, 4-conductor, stranded, shielded and must

comply with applicable and national code.

Power wiring is field supplied 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).

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Type Single Zone Standard Units

System Model Number (IDU/ODU) LS307HV3 (LSN307HV3/LSU307HV3) LS360HV3 (LSN360HV3/LSU360HV3)

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

Max Pipe Length

(ft)

98.4 98.4

Piping Length

(no add’l

refrigerant, ft)

24.6 24.6

Max Elevation Difference (ft)

49.2 49.2

Table 2: Single Zone Standard Unit Specications - Continued

EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit

Piping lengths are equivalent.

Power wiring is field supplied 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).

Single Zone Standard Unit Specications

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

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 Input

(kW)

1.7 3.0 4.0

Nominal Heating Capacity (Btu/h)

27,000 32,000 35,200

Heating Power Input

(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)

-4-75

Indoor Unit Operating Range

Cooling (°F)

64-90

Heating (°F)

60-86

Unit Data

Refrigerant Type

R410A

Refrigerant Control

EEV

IDU Sound Pressure

dB(A) (H/M/L)

49/44/40 49/44/40 49/44/40

ODU Sound Pressure

dB(A)

55 55 55

Power/Communication Cable

(No. x

AWG)

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

Table 3: Single Zone Extended Pipe Unit Specications

EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit

Power Input is rated at high speed.

Take 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.

Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.

All power/communication cables to be minimum 18 AWG, 4-conductor, stranded, shielded and must

comply with applicable and national code.

Power wiring is field supplied 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).

Single Zone Extended Pipe Unit Specications

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Type Single Zone Extended Pipe Units

System Model Number (IDU/ODU)

LS240HLV (LSN240HLV/

LSU240HLV)

LS300HLV (LSN300HLV/

LSU300HLV)

LS360HLV (LSN360HLV/

LSU360HLV)

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

Max Pipe Length

(ft)

164 164 164

Piping Length

(no add’l

refrigerant, ft)

24.6 24.6 24.6

Max Elevation Difference (ft)

98.4 98.4 98.4

Table 3: Single Zone Extended Pipe Unit Specications - Continued

EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit

Piping lengths are equivalent.

Power wiring is field supplied 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).

Single Zone Extended Pipe Unit Specications

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Single Zone Mega Unit Specications

Type Single Zone Mega Inverter

System (Model IDU/ODU) LS090HEV (LSN090HEV/LSU090HEV) LS120HEV (LSN120HEV/LSU120HEV)

Nominal Cooling Capacity (Btu/h) 8,500 12,000

Cooling Power Input

(kW) 0.78 1.17

Nominal Heating Capacity (Btu/h) 9,000 12,000

Heating Power Input

(kW) 0.78 0.98

COP 3.19 3.00

EER 10.90 10.26

SEER 16.3 16.3

HSPF 8.3 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 Type

R410A

Refrigerant Control Capillary Tube

IDU Sound Pressure

± 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.) 16/21 20/25

Outdoor Unit (Net/Shipping Weight lbs.) 52/56 49/53

Power/Communication Cable

(No. x AWG) 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) 318/276/226/177

424/353/272/212

Outdoor - Max (CFM) 953 953

Table 4: Single Zone Mega Unit Specications

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

EEV: Electronic Expansion Valve

Power wiring is field supplied 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 ft of refrigerant line per indoor unit and a 0 ft level difference

between outdoor and indoor units. All capacities are net with a combination ratio between 95-105%.

Cooling capacity rating obtained with air entering the indoor coil 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 60ºF wet bulb (WB);

and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).

Power Input is rated at high speed.

Take 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.

Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.

All power/communication cable to be minimum 18 AWG, 4-conductor, stranded, shielded

and must comply with applicable and national code.

Piping lengths are equivalent.

Type Single Zone Mega Inverter

System (Model IDU/ODU) LS090HEV (LSN090HEV/LSU090HEV) LS120HEV (LSN120HEV/LSU120HEV)

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

Max Pipe Length (ft)

49.2 49.2

Piping Length (no add’l refrigerant, ft)

24.6 24.6

Max Elevation Difference (ft) 22.9 22.9

Table 4: Single Zone Mega Unit Specications - Continued

Single Zone Mega Unit Specications

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Table 4: Single Zone Mega Unit Specications - Continued

Single Zone Mega Unit Specications

Type Single Zone Mega Inverter

System (Model IDU/ODU) LS180HEV (LSN180HEV/LSU180HEV) LS240HEV (LSN240HEV/LSU240HEV)

Nominal Cooling Capacity (Btu/h) 17,000 22,000

Cooling Power Input

(kW) 1.55 2.04

Nominal Heating Capacity (Btu/h) 19,000 22,000

Heating Power Input

(kW) 1.59 1.93

COP 3.19 3.00

EER 10.95 10.75

SEER 17.0 17.0

HSPF 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 Type

R410A

Refrigerant Control Capillary Tube

IDU Sound Pressure

± 3 dB(A) (H/M/L) 42/40/35 45/40/35

ODU Sound Pressure ± 3 dB(A) 51 53

Indoor Unit (Net/Shipping Weight lbs.) 28/30 28/34

Outdoor Unit (Net/Shipping Weight lbs.) 72/77 92/104

Power/Communication Cable

(No. x AWG) 4 x 18

Compressor

Compressor Type (Qty)

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) 629/512/441/353

689/600/494/388

Outdoor - Max (CFM) 1,342 1,766

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Type Single Zone Mega Inverter

System (Model IDU/ODU) LS180HEV (LSN180HEV/LSU180HEV) LS240HEV (LSN240HEV/LSU240HEV)

Piping

Liquid Line (in, OD) 1/4 1/4

Vapor Line (in, OD) 1/2 5/8

Condensation Line (OD | ID) 27/32 | 5/8 27/32 | 5/8

Additional Refrigerant Charge (oz/ft) 0.33 0.33

Max Pipe Length (ft)

65.6 65.6

Piping Length (no add’l refrigerant, ft)

24.6 24.6

Max Elevation Difference (ft) 32.8 32.8

EEV: Electronic Expansion Valve

Power wiring is field supplied 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 ft of refrigerant line per indoor unit and a 0 ft level difference

between outdoor and indoor units. All capacities are net with a combination ratio between 95-105%.

Cooling capacity rating obtained with air entering the indoor coil 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 60ºF wet bulb (WB);

and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).

Power Input is rated at high speed.

Take 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.

Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.

All power/communication cable to be minimum 18 AWG, 4-conductor, stranded, shielded

and must comply with applicable and national code.

Piping lengths are equivalent.

Table 4: Single Zone Mega Unit Specications - Continued

Single Zone Mega Unit Specications

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Single Zone Mega115V Unit Specications

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 Input

(kW) 0.71 1.14

Nominal Heating Capacity (Btu/h) 10,900 13,000

Heating Power Input

(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 Type

R410A

Refrigerant Control EEV

IDU Sound Pressure

± 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 Cable

(No. x AWG) 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

Table 5: Single Zone Mega 115V Unit Specications

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

EEV: Electronic Expansion Valve

Power wiring is field supplied 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 ft of refrigerant line per indoor unit and a 0 ft level difference

between outdoor and indoor units. All capacities are net with a combination ratio between 95-105%.

Cooling capacity rating obtained with air entering the indoor coil 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 60ºF wet bulb (WB);

and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).

Power Input is rated at high speed.

Take 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.

Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.

All power/communication cable to be minimum 18 AWG, 4-conductor, stranded, shielded

and must comply with applicable and national code.

Piping lengths are equivalent.

Type Single Zone Mega Inverter

System (Model IDU/ODU) LS090HXV (LSN090HXV/LSU090HXV) LS120HXV (LSN120HXV/LSU120HXV)

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

Max Pipe Length (ft)

49.2 49.2

Piping Length (no add’l refrigerant, ft)

24.6 24.6

Max Elevation Difference (ft) 23 23

Table 5: Single Zone Mega 115V Unit Specications - Continued

Product Data

Due to our policy of continuous product innovation, some specifications may change without notification.

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 6: Single Zone 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 7: 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 8: Single Zone Extended Pipe Indoor Unit Electrical Data

Electrical

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 9: 208-230V, 60Hz, 1-Phase Single Zone Mega Indoor Unit Electrical Data

Table 10: 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)

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.

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

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GENERAL DATA

R410A Refrigerant

• 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.

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 environment friendly refrigerant.

• To prevent the refrigerant cylinder from exploding, do not place it in direct sunlight.

• Do not use any piping that has not been approved for use in high-pressure refrigerant systems.

• To prevent the piping from softening, do not heat it more than necessary during installation.

General Installation Guidelines

Due to our policy of continuous product innovation, some specifications may change without notification.

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.

• Do not use the unit in environments where oil, steam, or sulfuric gas are present.

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 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

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 considerations 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.

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.

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 adja-

cent unit.

Avoid exposing the unit to sources of extreme temperature or gases to prevent serious bodily injury.

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

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GENERAL INSTALLATION GUIDELINES

• The unit should be installed in a soundproofed mechanical room.

• 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 2ft and 3 1/2 inches 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

Oceanside Applications

Use of a Building to Shield from Sea Wind

Sea wind

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.

General Installation Guidelines

Due to our policy of continuous product innovation, some specifications may change without notification.

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

concrete or rigid mount. See Figure 3. Follow applicable local codes

for clearance, mounting, anchor and vibration attenuation require-

ments.

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, earthquake or vibration.

Tie-Downs and Wind Restraints

The strength of the Duct-free Split Single Zone Inverter 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 design-

ing 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.

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.

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

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GENERAL INSTALLATION GUIDELINES

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 below.

Required Clearances

Minimum Clearance Requirements for Single Zone

Specific clearance requirements in the diagram below 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.

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.

Figure 4: Outdoor Unit Clearances

Outdoor Unit Clearance

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

Sunroof

Fence or

obstacles

More than

Unit : inch

More than

More than 8

More than 4

At least 6.5 from the ﬂoor

Unit: Inch

Outdoor Unit Clearance

Indoor Unit Clearance

Follow recommended best practices when choosing an indoor loca-

tion for the Single Zone 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 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 greater than 8

inches of clearance.

• Unit should be at least 6.5 feet from the oor for adequate clearance.

General Installation Guidelines

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL INSTALLATION GUIDELINES

Mounting of Indoor Unit Installation Plate

Follow the procedure and best practices below when mounting the

indoor unit’s plate to a wall.

Procedure

1. Before installation of the plate, confirm the position the screw

types (A or B) between chassis and installation plate.

2. Mount the installation plate horizontally by aligning the centerline

using a leveling tool (Figure 8).

3. Use provided screws when mounting the plating.

• If mounting the unit on concrete wall, use field supplied anchor

bolts.

4. Observe the left and right rear piping clearance when drilling into

the wall, as shown in Figure 8 (181HSV3, 180HEV, 240HEV) and

Figure 9 (091HSV3, 121HSV3).

Select location carefully. Unit should be anchored to a strong wall to pre-

vent unnecessary vibration.

• 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.

Mounting Installation Plate to Wall (091HSV3, 121HSV3, 181HSV3)

Ø2-19/32

27/32

3- 24/32

Left

rear piping

Installation Plate

Place a level on raised tab

Unit Outline

17/32

29/32

17-13/32 17-13/32

Unit: Inch

091HSV3, 121HSV3

Right

rear piping

Ø2-19/32

Figure 6: Installation Plate Screws - 091HSV3, 121HSV3

Unit: Inch

Ø2-19/32

2 -11/16

2-3/16

Right rear

piping

Left rear

piping

Installation Plate

Measuring Tape

Hanger

Place a level on raised tab

Unit Outline

8-3/32

4-3/32

18-3/32 22-13/32

181HSV3

180HEV

240HEV

Ø65

123

A Type : 95

B Type : 170

A Type B Type

Right rear piping

Left rear piping

Place a level on raised tab

Unit

Outline

217

175

(Unit : mm)

A Type : 442

B Type : 434

A Type : 442

B Type : 439

Ø65Ø65

Installation Plate

Refer to “Drilling Piping Hole in the Wall” on page 28 as

you follow procedure to install plate.

A-Type

B-Type

Figure 7: Installation Plate Screws

Figure 8: Installation Plate - 181HSV3, 180HEV, 240HEV

Figure 9: Installation Plate - 091HSV3, 121HSV3

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GENERAL INSTALLATION GUIDELINES

Mounting of Indoor Unit Installation Plate

Mounting Installation Plate to Wall (240HSV3, HV3, HLV)

Follow the procedure and best practices when mounting the indoor

unit’s plate to a wall.

Procedure

1. Mount the installation plate horizontally by aligning the centerline

using a leveling tool (Figure 10).

2. Use type “A” screws when mounting the plating (these screws

come with the plate).

• If mounting the unit on concrete wall, use field supplied anchor

bolts.

3. Observe the left and right rear piping clearance when drilling into

the wall, as shown in Figure 11.

Installation Plate

Chassis

Hook

Type "A" Screws

Installation Plate

Left rear piping Right rear piping

1-11/16

4-11/32

4-11/16

Unit: Inch

1-11/16

30-

11/16

13-

3/16

Figure 10: Installation Plate - Mounting

Figure 11: Installation Plate - Mounting

Drilling Piping Hole in the Wall

Follow the left or right piping clearance recommendations as shown

in Figure 11.

1. Using a 2 5/8 (ø 65mm) inch hole core drill bit, drill a hole at

either the right or left side of the wall mounting (Figure 12).

• The slant of the hole should be 3/16” to 5/16” 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.

• Sleeve and bushing prevents damage to the tubing/bundling of the

piping.

(3/16"~5/16")

Indoor

WALL

Outdoor

Bushing

Core Drill

Sleeve

Figure 12: Drilling Piping Hole

See Refrigerant Piping Connections for Indoor Unit on

page 52 to proceed with piping.

Select location carefully. Unit should be anchored to a strong wall to pre-

vent unnecessary vibration.

• 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.

General Installation Guidelines

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL INSTALLATION GUIDELINES

Mounting of Indoor Unit Installation Plate

Mounting Installation Plate to Wall (Mega 090HEV, 120HEV)

A-Type

B-Type

Figure 14: Installation Plate Screws Type A, Type B - 120HEV

1. Confirm the position of screws between chassis and installation

plate (Figure 13 and Figure 14).

2. Mount the installation plate horizontally by aligning the centerline

using a leveling tool (Figure 15 and Figure 16).

3. Use provided screws when mounting the plating.

• If mounting the unit on concrete wall, use field supplied anchor

bolts.

4. Observe the left and right rear piping clearance when drilling

into the wall as shown in Figure 15 (090HEV) and Figure 16

(120HEV).

Installation Plate

Chassis

Hook

Type “A”

Ø2-

19/32

5-23/32

2-30/32

Right rear piping

Left rear piping

Installation Plate

Place a level on raised tab

Unit Outline

18/32

Unit: inch

14-

28/32

14-

28/32

Ø2-

19/32

090HEV

Installation Plate

Figure 13: Installation Plate Screw Type A - 090HEV

Figure 15: Installation Plate - 090HEV

Figure 16: Installation Plate - 120HEV

Ø2

-19/32

Right Rear

Piping

Left Rear

Piping

Installation Plate

Place a level on raised tab

Unit: Inch

21/32

11/32

16-

8/32

18-

29/32

Unit Outline

120HEV

Ø2

-19/32

27/32

Refer to “Drilling Piping Hole in the Wall” on page 28 as

you follow procedure to install plate.

Select location carefully. Unit should be anchored to a strong wall to pre-

vent unnecessary vibration.

• 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.

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GENERAL INSTALLATION GUIDELINES

Mounting of Indoor Unit Installation Plate

Mounting Installation Plate to Wall (Mega 180HEV, 240HEV)

1. Confirm the position of screws between chassis and installation

plate (Figure 17).

2. Mount the installation plate horizontally by aligning the centerline

using a leveling tool (Figure 18).

3. Use provided screws when mounting the plating.

• If mounting the unit on concrete wall, use field supplied anchor

bolts.

4. Observe the left and right rear piping clearance when drilling into

the wall, as shown in Figure 18.

Refer to “Drilling Piping Hole in the Wall” on page 28 as

you follow procedure to install plate.

Unit: Inch

-19/32

2 -11/16

2-3/16

Right rear

piping

Left rear

piping

Installation Plate

Measuring Tape

Hanger

Place a level on raised tab

Unit Outline

8-3/32

4-3/32

-3/32

22-

13/32

180HEV and

240HEV

Installation Plate

Chassis

Hook

Type "A" Screws

Figure 17: Installation Plate Showing Screw Locations

Figure 18: Installation Plate - 180HEV, 240HEV

Select location carefully. Unit should be anchored to a strong wall to pre-

vent unnecessary vibration.

• 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.

General Installation Guidelines

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL INSTALLATION GUIDELINES

Follow the procedure and best practices when mounting the indoor

unit’s plate to a wall.

Procedure

1. Mount the installation plate horizontally by aligning the centerline

using a leveling tool (Figure 19).

2. Use type “A” screws when mounting the plating (these screws

come with the plate).

• If mounting the unit on concrete wall, use eld supplied anchor bolts.

3. Observe the left and right rear piping clearance when drilling into

the wall, as shown in Figure 20.

Mounting of Indoor Unit Installation Plate

Mounting Installation Plate to Wall (Mega 115V - HXV Models)

Installation Plate

Chassis

Hook

Type "A" Screws

Figure 19: Installation Plate - Mounting Mega 115V

Figure 20: Installation Plate - Mega 115V

Ø2-19/32

Right Rear

Piping

Left Rear

Piping

Installation Plate

Place a level on raised tab

Unit: Inch

21/32

5-11/32

16-

8/32

18-

29/32

Unit Outline

Ø2-19/32

4-27/32

090HXV, 120HXV

Refer to “Drilling Piping Hole in the Wall” on page 28 as

you follow procedure to install plate.

Select location carefully. Unit should be anchored to a strong wall to pre-

vent unnecessary vibration.

• 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.

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GENERAL INSTALLATION GUIDELINES

Mounting the Indoor Unit to the Installation Plate

Installation plate

Indoor unit

3”

Spacer

1. Hook the indoor unit onto the upper portion of the installation

plate ((1) Figure 21).

2. Engage the hooks at the top of the indoor unit with the upper

edge of the installation plate.

• Ensure that the hooks are properly seated on the installation plate

by moving it left and right.

3. Move the bottom of indoor unit towards the installation plate to

anchor to wall ((2) Figure 21).

• It helps to press the lower left and right sides of the unit against the

installation plate until the hooks engage into their slots.

• You will hear a clicking sound as the bottom attaches to the instal-

lation plate successfully.

4. Finish by inserting and tightening two type “C” screws into the

bottom of the installation plate (Figure 23).

• Pay attention to the positioning of the piping through any wall as

shown in the figure, as you insert the screws to the indoor unit.

Preparing for Piping/ Electrical Connection

1. To prepare indoor unit for piping, disengage bottom on indoor unit

from installation plate by reversing step 3 from previous

procedure.

• This step will separate the indoor unit’s bottom side from the wall

mount in order to route drain hose correctly. See Figure 24 for a

reference of the rear view of the indoor unit.

2. Swing drain hose holder (L-bracket) out and anchor as shown in

Figure 22, against installation plate.

3. Optionally, go to Refrigerant Piping Connections section

of this manual to continue with piping connections to the indoor

unit.

4. Optionally, go to Electrical Connections section of this manual to

continue with conduit/electrical wiring to the indoor unit.

Figure 21: Mounting Unit on Installation Plate

Figure 22: Mounting Unit on Installation Plate

Figure 23: Mounting Bottom of Unit to Installation Plate

Figure 24: Rear View of IDU

side of the indoor unit from the wall .

Installation Plate

Drain Hose

Holder

L-bracket

Type 'C' Screws

Bottom of

Indoor Unit

Piping

Through

Wall

Installation Plate

Drain Hose

Drain Hose Holder

Mounting of Indoor Unit

General Installation Guidelines

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GENERAL INSTALLATION GUIDELINES

Piping Preparation

• Do not allow the refrigerant to leak during brazing; if the refrigerant combusts, it generates a toxic gas.

• Do not braze in an enclosed location, and always test for gas leaks before / after brazing.

• After brazing, check for refrigerant gas leaks.

3. Flaring the pipe end.

• Use the proper size flaring tool to finish flared connections as

shown.

• ALWAYS create a 45° flare when working with R410A. See Warn-

ing on this page.

Creating a Flare Fitting

One of the main causes of refrigerant leaks is defective ared

connections. Create ared connections using the procedure below

(Figure 26).

1. Cut the pipe to length.

• Measure the distance between the indoor unit and the outdoor unit.

• Cut the pipes a little longer than measured distance.

• Cut the cable 4.9 ft longer than the pipe length.

2A. Remove the burrs.

• Completely remove all burrs from pipe ends.

• When removing burrs, point the end of the copper pipe down to

avoid introducing foreign materials in the pipe.

2B. Slide the flare nut onto the copper tube.

Copper

tube

90°

Slanted Uneven Rough

Pipe

Reamer

Point

down

Flare nut

Copper

tube

Bar

Copper pipe

Clamp handle

Red arrow

Cone

Yoke

Handle

Bar

"A"

Slanted

Inside is shiny with no scratches

Smooth

Even length

Damanged

surface

Cracked Uneven

thickness

Incorrect Flares

2A. 2B.

4. Carefully inspect the flared pipe end.

• Compare the geometry with the figure to the right and dimensions

as detailed in Figure 25.

• If the flare is defective, cut it off and re-do procedure.

• If flare looks good, blow clean the pipe with dry nitrogen.

90°

45°

R=0.4~0.8

Figure 25: Dimensions of the Flare

Pipe “A” Thickness

Vapor (in. O.D.) Liquid (in. O.D.) Vapor (in.) Liquid (in.) Vapor (in.) Liquid (in.)

1/2 1/4 1/8 1/16 1/8 1/8

5/8 3/8 1/8 1/16 1/16 1/8

Table 11: Flared Connection Dimensions

Piping Preparation

1. Do not use kinked pipe caused by excessive bending in one

specific area on its length.

2. Braze the pipes to the service valve pipe stub of the outdoor unit.

When selecting are ttings, always use a 45° tting rated for use

with high pressure refrigerant R410A. Selected ttings must also

comply with local, state, or federal standards.

Figure 26: Creating a Flare Fitting

Single Zone Pipe Connections

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GENERAL INSTALLATION GUIDELINES

Union

Figure 27: Tightening the Flare Nuts.

Pipe size (Inches O.D.) Tightening torque (ft-lbs) Width of the are (A [inches])

1/4Ø 13.9 - 18 1/8

3/8Ø 24.5 - 30.3 1/8

1/2Ø 39.7 - 47.7 1/8

5/8Ø 45.5 - 59.2 1/16

Table 12: Tightening Torque for Flare Nuts.

Tightening the Flare Nuts

1. When connecting the flare nuts, coat the flare (inside and outside) with polyvinyl ether (PVE)

refrigeration oil only.

2. Initially hand tighten the flare nuts using three (3) or four (4) turns.

3. To finish tightening the flare nuts, use both a torque wrench and a backup wrench.

4. After all the piping has been connected and the caps have been tightened, check for refrigerant gas leaks.

Loosening the Flare Nuts

Always use two (2) wrenches to loosen the flare nuts.

Do not use polyolyester (POE) or any other type of mineral oil as a thread lubricant. These lubricants are not compatible with PVE oil used in

this system and create oil sludge leading to equipment damage and system malfunction.

Piping Preparation / Piping Materials and Handling

Pipes used for the refrigerant piping system must include the specified thickness, and the

interior must be clean.

While handling and storing, do not bend or damage the pipes, and take care not to contami-

nate the interior with dust, moisture, etc. See Table 13 for care of piping.

Dry Clean Airtight

Principles No moisture should be inside the piping. No dust should be inside the piping. No leaks should occur.

Problems

Caused

- Significant hydrolysis of refrigerant oil.

- Refrigerant oil degradation.

- Poor insulation of the compressor.

- System does not operate properly.

- EEVs, capillary tubes are clogged.

- Refrigerant oil degradation.

- Poor insulation of the compressor.

- System does not operate properly.

- EEVs and capillary tubes become

clogged.

- Refrigerant gas leaks / shortages.

- Refrigerant oil degradation.

- Poor insulation of the compressor.

- System does not operate properly.

Solutions

- Remove moisture from the piping.

- Piping ends should remain capped until

connections are complete.

- Do not install piping on a rainy day.

- Connect piping properly at the unit’s side.

- Remove caps only after the piping is

cut, the burrs are removed, and after

passing the piping through the walls.

- Evacuate system to a minimum of 500

microns and insure the vacuum holds at

that level for 24 hours

- Remove dust from the piping.

- Piping ends should remain capped until

connections are complete.

- Connect piping properly at the side of

the unit.

- Remove caps only after the piping is cut

and burrs are removed.

- Retain the cap on the piping when

passing it through walls, etc.

- Test system for air tightness.

- Perform brazing procedures that comply

with all applicable standards.

- Perform flaring procedures that comply

with all applicable standards.

- Perform flanging procedures that

comply with all applicable standards.

- Ensure that refrigerant lines are pressure

tested to 550 psig.

Moisture

Dust

Leaks

Figure 28: Keep Piping Capped While Storing

Table 13: Three Principles of Refrigerant Piping

Piping Materials and Handling

General Installation Guidelines

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GENERAL INSTALLATION GUIDELINES

Figure 29: Refrigerant Pipe Brazing.

Pressure-reducing

Valve

Taping

Nitrogen

Pipe to

be brazed

Refrigerant

Piping

It is imperative to keep the piping system free of contaminants and debris such as

copper burrs, slag, or carbon dust during installation.Contaminants can result in

mechanical failure of the system.

Brazing Practices

Piping Materials and Handling

All joints are brazed in the field. Duct Free System Single Zone Inverter refrigeration system components contain very small capillary tubes,

small orifices, electronic expansion valves, oil separators, and heat exchangers that can easily become blocked. Proper system operation

depends on the installer using best practices and utmost care while assembling the piping system.

• While brazing, use a dry nitrogen purge operating at a minimum pressure of three (3) psig and maintain a steady flow.

• Blow clean all pipe sections with dry nitrogen prior to assembly.

• Use a tubing cutter, do not use a saw to cut pipe. De-burr and clean all cuts before assembly.

• Store pipe stock in a dry place. Keep pipe capped and clean.

• Use adapters to assemble different sizes of pipe.

• Do not use flux, soft solder, or anti-oxidant agents.

• Use a 15% silver phosphorous copper brazing alloy to avoid overheating and produce good flow.

• Protect isolation valves, electronic expansion valves, and other heat-sensitive control components from excessive heat with a wet rag or a

heat barrier spray product

Refrigerant Piping System Insulation

All refrigerant piping, field-provided isolation ball valves, service valves, and elbows shall be completely insulated using closed cell pipe

insulation. The liquid and vapor lines must be insulated separately.

To prevent heat loss/heat gain through the refrigerant piping, all refrigerant piping including liquid lines and vapor lines shall be insulated sep-

arately. Insulation shall be a minimum 1/2″ thick, and thickness may need to be increased based on ambient conditions and local codes.

All insulation joints shall be glued with no air gaps. Insulation material shall fit snugly against the refrigeration pipe with no air space between

it and the pipe. Insulation passing through pipe hangers, inside conduit, and/or sleeves must not be compressed. Protect insulation inside

hangers and supports with a second layer. All pipe insulation exposed to the sun and outdoor elements shall be properly protected with PVC,

aluminum vapor barrier, or alternatively placed in a weather-resistant enclosure such as a pipe rack with a top cover; and meet local codes.

The design engineer should perform calculations to determine if the factory-supplied insulation jackets are sufficient to meet local codes and

avoid sweating. Add additional insulation if necessary. Mark all pipes at the point where the insulation jacket ends. Remove the jacket. Install

field provided insulation on the run-out and main trunk pipes first. Peel the adhesive glue protector slip from the insulation jacket and install

the clam-shell jacket over the fitting.

For specific insulation procedures, see Refrigerant Piping Connections section in this installation manual.

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GENERAL INSTALLATION GUIDELINES

Piping Materials and Handling

Table 16: ACR Copper Tubing Dimensions and Physical Characteristics

1-4

Nominal Pipe

Outside

Diameter (in)

Actual Outside

Diameter (in)

Drawn Temper Annealed Temper

Nominal Wall

Thickness (in)

Weight (lb/ft)

Cubic ft per

Linear ft

Nominal Wall

Thickness (in)

Weight (lb/ft)

Cubic ft per

Linear ft

1/4 0.250 -- -- -- 0.030 0.081 .00020

3/8 0.375 0.030 0.126 .00054 0.032 0.134 .00053

1/2 0.500 0.035 0.198 .00101 0.032 0.182 .00103

5/8 0.625 0.040 0.285 .00162 0.035 0.251 .00168

3/4 0.750 0.042 0.362 .00242 0.042 0.362 .00242

7/8 0.875 0.045 0.455 .00336 0.045 0.455 .00336

1-1/8 1.125 0.050 0.655 .00573 0.050 0.655 .00573

All dimensions provided are in accordance with ASTM B280 – Standard.

Design pressure = 551 psig.

ACR Tubing is available as hard drawn or annealed (soft) and are suitable for use with R410A refrigerant.

The Copper Tube Handbook, 2010, Copper Development Association Inc., 260 Madison Avenue, New York, NY 10016.

• Commercially available piping often contains dust and other materials. Always blow it clean with a dry inert gas.

• Prevent dust, water or other contaminants from entering the piping during installation. Contaminants can cause

mechanical failure.

Selecting Field-Supplied Copper Tubing

Copper is the only approved refrigerant pipe material for use with Duct Free System Single Zone products, and LG recommends seamless

phosphorous deoxidized ACR type copper pipe, hard-drawn rigid type “K” or “L”, or annealed-tempered, copper pipe.

• Drawn temper (rigid) ACR copper tubing is available in sizes 3/8 through 2-1/8 inches (ASTM B 280, clean, dry, and capped).

• Annealed temper (soft) ACR copper tubing is available in sizes 1/4 through 2-1/8 inches (ASTM B 280, clean, dry, and capped).

Tube wall thickness should meet local code requirements and be approved for an operating pressure of 551 psi. If local code does not

specify wall thickness, LG suggests using tube thickness per table below. When bending tubing, try to keep the number of bends to a

minimum, and use the largest radii possible to reduce the equivalent length of installed pipe; also, bending radii greater than ten (10) pipe

diameters can minimize pressure drop. Be sure no traps or sags are present when rolling out soft copper tubing coils.

Table 14: ACR Copper Tubing Material

Type Seamless Phosphorous Deoxidized

Class UNS C12200 DHP

Straight Lengths H58 Temper

Coils O60 Temper

OD (in) 1/4 3/8 1/2 5/8 3/4 7/8 1-1/8 1-3/8 1-5/8

Material Rigid Type “K” or “L” and Soft ACR Acceptable Rigid Type “K” or “L” Only

Min. Bend

Radius (in)

.563 .9375 1.5 2.25 3.0 3.0 3.5 4.0 4.5

Min. Wall

Thickness (in)

.03 .03 .035 .040 .042 .045 .050 .050 .050

Table 15: Piping Tube Thicknesses

General Installation Guidelines

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GENERAL INSTALLATION GUIDELINES

Figure 30: Installing Piping Above and Below an Obstacle.

Above an obstacle.

Below an obstacle.

Above an obstacle.

Below an obstacle.

Obstacles

When an obstacle, such as an I-beam or concrete T, is in the path

of the planned refrigerant pipe run, it is best practice to route the

pipe over the obstacle. If adequate space is not available to route

the insulated pipe over the obstacle, then route the pipe under the

obstacle. In either case, it is imperative the length of the horizontal

section of pipe above or below the obstacle be a minimum of three

(3) times the longest vertical rise (or fall) at either end of the

segment.

No Pipe Size Substitutions

Use only the pipe size recommended by this installation manual. Using a different size is prohibited and may result in a system malfunction or failure

to work at all.

Under normal operating conditions, the vapor pipe temperature of

a Duct Free System can vary as much as 280°F. With this large

variance in pipe temperature, the designer must consider pipe

expansion and contraction to avoid pipe and fitting fatigue failures.

Refrigerant pipe along with the insulation jacket form a cohesive

unit that expands and contracts together. During system operation,

thermal heat transfer occurs between the pipe and the surrounding

insulation.

If the pipe is mounted in free air space, no natural restriction to

movement is present if mounting clamps are properly spaced and

installed. When the refrigerant pipe is mounted underground in a

utility duct stacked among other pipes, natural restriction to linear

movement is present. In extreme cases, the restrictive force of

surface friction between insulating jackets could become so great

that natural expansion ceases and the pipe is “fixed” in place. In this

situation, opposing force caused by change in refrigerant fluid/vapor

temperature can lead to pipe/fitting stress failure.

The refrigerant pipe support system must be engineered to allow

free expansion to occur. When a segment of pipe is mounted

between two fixed points, provisions must be provided to allow pipe

expansion to naturally occur. The most common method is the

inclusion of expansion Loop or U-bends. Each segment of pipe has

a natural fixed point where no movement occurs. This fixed point is

located at the center point of the segment assuming the entire pipe

is insulated in a similar fashion. The natural fixed point of the pipe

segment is typically where the expansion Loop or U-bend should be.

Linear pipe expansion can be calculated using the following formula:

1. From Table 17 find the row corresponding with the actual length

of the straight pipe segment.

2. Estimate the minimum and maximum temperature of the pipe.

In the column showing the minimum pipe temperature, look up the

anticipated expansion distance. Do the same for the maximum

pipe temperature.

3. Calculate the difference in the two expansion distance values.

The result will be the anticipated change in pipe length.

Example:

A system is installed and the design shows that there is a 100 foot

straight segment of tubing between an indoor unit and the outdoor

unit. In heating, this pipe transports hot gas vapor to the indoor units

at 120 °F. In cooling, the same tube is a suction line returning refrig-

erant vapor to the outdoor unit at 40 °F. Look up the copper tubing

expansion at each temperature and calculate the difference.

Vapor Line

Transporting Hot Vapor: 100 ft. pipe at 120 °F = 1.40 in.

Transporting Suction Vapor: 100 ft. pipe at 40 °F = 0.40 in.

Anticipated Change in Length: 1.40 in. – 0.40 in. = 1.00 in.

Liquid Line

The liquid temperature remains relatively the same temperature; only

the direction of flow will reverse. Therefore, no significant change in

length of the liquid line is anticipated.

When creating an expansion joint, the joint height should be a

minimum of two times the joint width. Although different types of

expansion arrangements are available, the data for correctly sizing

an Expansion Loop is provided in Table 18. Use soft copper with

long radius bends on longer runs or long radius elbows for shorter

pipe segments. Using the anticipated linear expansion (LE) distance

calculated, look up the Expansion Loop or U-bend minimum design

dimensions. If other types of expansion joints are chosen, design

per ASTM B-88 Standards.

LE = C x L x (T

– T

) x 12

LE = Anticipated linear tubing expansion (in.)

C = Constant (For copper = 9.2 x 10

-6

in./in.°F)

L = Length of pipe (ft.)

= Refrigerant pipe temperature (°F)

= Ambient air temperature (°F)

12 = Inches to feet conversion (12 in./ft.)

Copper Expansion and Contraction

Piping Materials and Handling

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GENERAL INSTALLATION GUIDELINES

See table below for precalculated anticipated expansion for various pipe sizes and lengths of refrigerant tubing.

To find the anticipated expansion value:

1. From the table below, find the row corresponding with the actual feet of the straight pipe segment.

2. Estimate the minimum and maximum temperature of the pipe.

3. In the column showing the minimum pipe temperature, look up the anticipated expansion distance corresponding to the segment length.

Do the same for the maximum pipe temperature.

4. Calculate the difference in the two expansion distance values. The result will be the change in pipe length.

Pipe

Length

Fluid Temperature °F

35° 40° 45° 50° 55° 60° 65° 70° 75° 80° 85° 90° 95° 100° 105° 110° 115° 120° 125° 130°

0.04 0.04 0.05 0.06 0.06 0.07 0.08 0.08 0.09 0.09 0.10 0.10 0.11 0.11 0.11 0.12 0.13 0.14 0.15 0.15

0.08 0.08 0.10 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.22 0.23 0.26 0.28 0.29 0.30

0.12 0.12 0.15 0.18 0.20 0.21 0.23 0.24 0.26 0.27 0.29 0.30 0.32 0.33 0.32 0.35 0.39 0.42 0.44 0.45

0.16 0.16 0.20 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.42 0.44 0.43 0.46 0.52 0.56 0.58 0.60

0.20 0.20 0.25 0.30 0.33 0.35 0.38 0.40 0.43 0.45 0.48 0.50 0.53 0.55 0.54 0.58 0.65 0.70 0.73 0.75

0.24 0.24 0.30 0.36 0.39 0.42 0.45 0.48 0.51 0.54 0.57 0.60 0.63 0.66 0.65 0.69 0.78 0.84 0.87 0.90

Table 17: Linear Thermal Expansion of Copper Tubing in Inches

Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe," The Engineers' Toolbox, www.engineeringtoolbox.com.

Piping Materials and Handling

Figure 31: Coiled Expansion Loops and Offsets

Large Tubing U-bend (>3/4 in.) Loop Small Tubing U-bend (<3/4 in.)

General Installation Guidelines

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL INSTALLATION GUIDELINES

Piping Materials and Handling

Anticipated Linear

Expansion (LE) (inch-

es)

Nominal Tube Size (OD) inches

1/4 3/8 1/2 3/4

1/2

6 7 8 9

38 44 50 59

9 10 11 13

54 63 70 83

1-1/2

11 12 14 16

66 77 86 101

12 14 16 19

77 89 99 117

2-1/2

14 16 18 21

86 99 111 131

15 17 19 23

94 109 122 143

3-1/2

16 19 21 25

102 117 131 155

17 20 22 26

109 126 140 166

Pipe Bends

When bending soft copper, use long radius bends. Refer to the "Radii of Coiled Expansion Loops and Developed Lengths of Expansion

Offsets” table for minimum radius specifications, as shown above.

In-line Refrigeration Components

Components such as oil traps, solenoid valves, filter-dryers, sight glasses, tee fittings, and other after-market accessories are not permitted

on the refrigerant piping system between the outdoor unit and the indoor unit.

Duct-free Single Zone systems are provided with redundant systems that assure oil is properly returned to the compressor. Sight-glasses and

solenoid valves may cause vapor to form in the liquid stream.

Over time, dryers may deteriorate and introduce debris into the system. The designer and installer should verify the refrigerant piping system

is free of traps, sagging pipes, sight glasses, filter dryers, etc.

Field-provided Isolation Ball Valves

LG allows the installation of field-supplied ball valves with Schrader ports at each indoor unit. Full-port isolation ball valves with Schrader

ports (positioned between valve and indoor unit) rated for use with R410A refrigerant should be used on both the liquid and vapor lines.

If valves are not installed and a single indoor unit needs to be removed or repaired, the entire system must be shut down and evacuated.

Position valves with a minimum distance of three (3) to six (6) inches of pipe on either side of the valve, and placed between six (6) and

twelve (12) inches from the run-out pipe to the upstream main pipe. If ball valves are installed closer to the indoor unit, a section of pipe

becomes a dead zone when the valves are closed where oil may accumulate.

Table 18: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets

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GENERAL INSTALLATION GUIDELINES

Using Elbows

Field-supplied elbows are allowed as long as they are designed for use with R410A refrigerant. The designer, however, should be cautious

with the quantity and size of fittings used, and must account for the additional pressure losses in equivalent pipe length calculation.

The equivalent pipe length of each elbow must be added to each pipe segment (Figure 32).

Piping Support, Elbow Usage

Pipe Supports

A properly installed pipe system should be adequately supported to avoid pipe sagging. Sagging pipes

become oil traps that lead to equipment malfunction.

Pipe supports should never touch the pipe wall; supports shall be installed outside (around) the

primary pipe insulation jacket (see Figure 33). Insulate the pipe first because pipe supports shall

be installed outside (around) the primary pipe insulation jacket. Clevis hangers should be used

with shields between the hangers and insulation. Field provided pipe supports should be de-

signed to meet local codes. If allowed by code, use fiber straps or split-ring hangers suspended

from the ceiling on all-thread rods (fiber straps or split ring hangers can be used as long as they

do not compress the pipe insulation). Place a second layer of insulation over the pipe insulation

jacket to prevent chafing and compression of the primary insulation within the confines of the

support pipe clamp.

Figure 33: Pipe Hanger Details

Figure 34: Typical Pipe Support Location—

Change in Pipe Direction

A properly installed pipe system will have sufficient supports to avoid pipes from sagging

during the life of the system. As necessary, place supports closer for segments where

potential sagging could occur. Maximum spacing of pipe supports shall meet local codes.

If local codes do not specify pipe support spacing, pipe shall be supported:

• Maximum of five feet (5′) on center for straight segments of pipe up to 3/4" outside

diameter size.

• Maximum of six feet (6′) on center for pipe up to one inch (1″) outside diameter size.

• Maximum of eight feet (8′) on center for pipe up to two inches (2″) outside diameter size.

Wherever the pipe changes direction, place pipe clamps within twelve (12) inches on

one side and within twelve to nineteen (12 to 19) inches of the bend on the other side as

shown in Figure 34.

Pipe

Clamps

A + B ≈ 12”–19”

Component Size (Inches)

Elbow (ft.)

1/4 3/8 1/2 5/8 3/4

0.5 0.6 0.7 0.8 1.2

Figure 32: Equivalent Piping Length for Piping Components

General Installation Guidelines

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GENERAL INSTALLATION GUIDELINES

Pipe Sleeves at Penetrations

LG requires that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an

appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the sleeve

(Figure 35). Underground refrigerant pipe shall be routed inside a protective sleeve to prevent insulation deterioration. Refer to Figure 36.

Figure 35: Pipe Sleeve Options.

Diameter of penetrations shall be determined by pipe diameter plus the thickness of the insulation.

Underground Refrigerant Piping

Refrigerant pipe installed underground should be routed inside a

vapor tight protective sleeve to prevent insulation deterioration and

water infiltration. Refrigerant pipe installed inside underground

casing must be continuous without any joints. Underground

refrigerant pipe must be located at a level below the frost line.

Figure 36: Typical Arrangement of Refrigerant Pipe and Cable(s) in a

Utility Conduit.

Table 19: Utility Conduit Sizes.

OD pipe diameter in inches; Values in parenthesis () indicate OD of pipe with insulation jacket.

Diameter of pipe with insulation. Thickness of pipe insulation is typical. Actual required thickness may

vary based on surrounding ambient conditions and should be calculated and specified by the design

engineer.

Insulation thickness (value in parenthesis) = 3/8 inch.

Insulation thickness (value in parenthesis) = 1 inch.

Liquid Pipe

Vapor Pipe

3/8 (1-1/8

2,3

) 1/2 (2.0

2,4

) 5/8 (2-1/8

2,4

)

1/4 (1.0)

4 4 4

3/8 (1-1/8)

4 4 4

Table 20: Heat Pump Unit Refrigerant Pipe Connections

(All Brazed Type)

Model

Liquid Conn.

(inches)

Vapor Conn.

(inches)

LSU091HSV3, LSU121HSV3

1/4 3/8

LSU181HSV3, LSU240HSV3

3/8 5/8

LSU307HV3, LSU360HV3

3/8 5/8

LSU240HLV, LSU300HLV,

LSU360HLV

3/8 5/8

LSU090HEV, LSU120HEV,

LSU090HXV, LSU120HXV

1/4 3/8

LSU180HEV

1/4 1/2

LSU240HEV

1/4 5/8

Refrigerant Piping System Layout

Vapor Line

Liquid Line

Min. 18 Gauge

Cable

Power/Communication

e Sleeve

Insulation Material

Insulation

Material

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REFRIGERANT PIPING CONNECTIONS

Connection Limitations

Single zone systems consist of one outdoor unit and one indoor unit. One of the most critical elements of a single zone system is the refriger-

ant piping. Table 21- Table 24 list pipe length limits that must be followed in the design of a Single Zone Wall Mount refrigerant pipe system.

Refer to Figure 37 for maximum length and elevation of piping.

Table 21: Single Zone High Efciency Refrigerant Piping System Limitations

Pipe Length

(ELF = Equivalent Length of

pipe in Feet)

Longest total equivalent piping length

LS091HSV3 LS121HSV3 LS181HSV3 LS240HSV3

65.6 65.6 98.4 98.4

Distance between fittings and indoor units

or outdoor units

≥20 inches ≥20 inches ≥20 inches ≥20 inches

Elevation

(All Elevation Limitations are

Measured in Actual Feet)

If outdoor unit is above indoor unit

32.8 32.8 49.2 49.2

If outdoor unit is below indoor unit

32.8 32.8 49.2 49.2

Additional Refrigerant Needed (oz/ft)

0.22 0.22 0.38 0.38

Table 22: Single Zone Standard Refrigerant Piping System Limitations

Figure 37: Single Zone System Layout

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Max Length = A

Max Elevation = B

Unit = Feet

Pipe Length

(ELF = Equivalent Length of

pipe in Feet)

Longest total equivalent piping length

LS307HV3 LS360HV3

98.4 98.4

Distance between fittings and indoor units

or outdoor units

≥20 inches ≥20 inches

Elevation

(All Elevation Limitations are

Measured in Actual Feet)

If outdoor unit is above indoor unit

49.2 49.2

If outdoor unit is below indoor unit

49.2 49.2

Additional Refrigerant Needed (oz/ft)

0.38 0.38

Refrigerant Piping System Limitations

Refrigerant Piping Connections

Due to our policy of continuous product innovation, some specifications may change without notification.

REFRIGERANT PIPING CONNECTIONS

Table 23: Single Zone Extended Pipe Refrigerant Piping System Limitations

Table 24: Single Zone Mega/Mega 115V Pipe Refrigerant Piping System Limitations

Pipe Length

(ELF = Equivalent Length of

pipe in Feet)

Longest total equivalent piping length

LS240HLV LS300HLV LS360HLV

164.0 164.0 164.0

Distance between fittings and indoor units

or outdoor units

≥20 inches ≥20 inches ≥20 inches

Elevation

(All Elevation Limitations are

Measured in Actual Feet)

If outdoor unit is above indoor unit

98.4 98.4 98.4

If outdoor unit is below indoor unit

98.4 98.4 98.4

Additional Refrigerant Needed (oz/ft)

0.38 0.38 0.38

Refrigerant Piping System Limitations

Pipe Length

(ELF = Equivalent Length of

pipe in Feet)

Longest total equivalent piping length

LSU090HEV/

LSU120HEV

LSU180HEV/

LSU240HEV

LSU090HXV/

LSU120HXV

49.2 65.6 49.2

Distance between fittings and indoor or

outdoor units

≥20 inches ≥20 inches ≥20 inches

Elevation

(All Elevation Limitations are

Measured in Actual Feet)

If outdoor unit is above indoor unit

22.9 32.8 23

If outdoor unit is below indoor unit

22.9 32.8 23

Additional Refrigerant Needed (oz/ft)

0.22 0.33 0.22

Connection Limitations - Continued

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REFRIGERANT PIPING CONNECTIONS

Installation Overview

Vinyl tape (Wide)

• Apply after carrying out a

drainage test.

Saddle

Gas side piping

Liquid side piping

Additional drain pipe

Vinyl tape (Narrow)

Drain Hose

Base Plate

Air Outlet

Air Inlet

Connecting cable

Tubing Cover

Sleeve

Bushing-Sleeve

Putty(Gum Type Sealant)

Bend the pipe as closely

on the wall as possible,

but be careful that it

doesn't break.

Installation plate

Installation Overview

Additional accessories/parts/tools that will be

needed for installation but are not provided by LG.

Figure 38: Installation and Piping Connection Overview

Figure 39: Pipe Support Lengths - Outdoors

Installation

Duct Free Single Zone Wall Mounts are a one-to-one sys-

tem. There is a direct piping connection between the outdoor

unit and the indoor unit. Figure 38 Illustrates the basic pipe

connections between the outdoor and indoor unit. Refer back

to this illustration as you proceed with pipe connections, This

illustration shows the indoor unit being installed at a higher

position than the outdoor unit. However, should you install the

outdoor unit at a higher position than the indoor unit, the basic

pipe connections should be the same.

Refer back to the tables within the “Connection Limita-

tions” section, on the previous page, for specific length

limitations in conjunction with outdoor unit and indoor unit

positioning.

Pipe

Clamps

A + B ≈ 12”–19”

• As you proceed with the piping connections be sure to adhere

to pipe support spacing lengths as shown in Figure 39 below.

Refer back to “Pipe Supports” section for in-depth information

regarding using elbows, clamps and pipe supporting materials.

• Always adhere to local codes regarding piping and accurate

support spacing along the outdoor pipe line.

Refrigerant Piping Connections

Due to our policy of continuous product innovation, some specifications may change without notification.

REFRIGERANT PIPING CONNECTIONS

Directional Pipe Formation

Drain hose

Vinyl tape(narrow)

Pipe

Wrap with

vinyl tape(wide)

Bundling Piping

Pipe Bundling

See Figure 40 for proper pipe and cable bundling. Note the placement

of the piping along with the necessary insulation material.

1. Be sure to wrap each pipe with proper insulation material.

2. Secure the piping by wrapping vinyl tape around the pipe.

• Use the narrow size tape for wrapping the actual pipe.

3. You can include the drain hose within the bundled piping and wrap all

of them together using the wider vinyl tape as shown in Figure 41.

• The end of the drain hose outlet must be routed above the ground.

Indoor Unit Installed Above Outdoor Unit

1. Refer to Figure 42 while following the procedures below.

2. Tape the piping, drain hose and connecting cable from down to up.

3. Secure the taped piping along the exterior wall using pipe

clamps.

4. Create trap above the electrical connections cover, in order to pre-

vent water from penetrating electrical components and wiring.

Indoor Unit Installed Below Outdoor Unit

1. Refer to Figure 43 while following the procedures below.

2. Tape the piping, drain hose and connection cable from down to up.

3. Secure the taped piping along the exterior wall using pipe

clamps.

4. Create trap above the electrical connections cover, in order to

prevent water from entering the room.

Figure 40: Cutaway of Proper Pipe and Cable Bundling

Figure 41: Bundling and Taping

Taping

Pipe Clamps

to Secure Pipe

Against Wall

Drain hose

Pipings

Connecting cable

Seal small openings

around pipings with a

gum type sealant.

Trap is required to prevent water

from entering into electrical parts.

Indoor Unit Installed ABOVE

Outdoor Unit - Piping/Trap

Figure 42: IDU Above ODU - Piping and Trap

Seal a small opening

around the pipings

with gum type sealant.

Trap

Indoor Unit Installed BELOW

Outdoor Unit - Piping/Trap

Pipe Clamps

to Secure Pipe

Against Wall

Figure 43: IDU Below ODU - Piping and Trap

Vapor Line

Liquid Line

Min. 18 Gauge

Cable

Power/Communication

e Sleeve

Insulation Material

Insulation

Material

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REFRIGERANT PIPING CONNECTIONS

Drain Hose

Drain Hose Guidelines

Refer to the diagrams below and follow proper installation and the running of the drain hose along the pipe installation line to avoid leakage. Once

drain hose is set in place, always follow with evacuation and leakage testing of all piping to be sure all piping is properly sealed. Re-check and retest

as necessary.

Drain hose is routed from the indoor unit through the structure

(wall) to the outdoor. It should slope at an angle where it is high-

er at the indoor unit and lower toward the outdoor area, thereby

letting gravity push any condensation down and out. See Figure

44 for proper drainage slope. Avoid piping the drain hose as

shown in Figure 45. These methods are incorrect and can cause

leakage at the indoor unit site.

Downward slope

to outdoor

for proper drainage

Indoor

Unit

Piping

Correct Drainage Slope

Figure 44: Correct Slope Angle for Drain Hose

Upward slope

to outdoor

can cause indoor

leaks!

Water

leakage

Accumulated

drain water

Air

Waving

Water

leakage

Indoor Unit

Incorrect Drainage Setup

Tip of drain hose

dipped in water

Water

leakage

Ditch

Less than

2 Inch gap from ground

Indoor Unit

Drain Hose

Figure 45: Correct Slope Angle for Drain Hose

Refrigerant Piping Connections

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REFRIGERANT PIPING CONNECTIONS

Outdoor Unit Connections

Single Zone Wall Mount Outdoor Unit Connections (HSV3, HV3, HLV)

1. Remove the tubing cover by loosening the fastening screws.

See Figure 46 for HSV3 model and Figure 47 for HV3, HLV models.

2. Align the center of the refrigerant pipe and corresponding

connection as shown in Figure 48 (on the next page).

3. Refer to Figure 49 (for HSV3) and Figure 50 (for HV3, HLV) for

correct liquid and gas pipe attachment onto outdoor unit.

4. Place a couple of drops of refrigerant oil on the opening rim of the

flare before assembling. Ensure you do not add any

contaminants. Tighten the flare nut initially by hand.

5. Finish tightening the flare nut with a torque wrench until the

wrench clicks. Follow torque guidelines in Table 25. See Figure

49 for HSV3 model and Figure 50 for HV3, HLV models for cor-

rect connection points.

Figure 46: Outdoor Unit Connection Cover Removal (HSV3)

Figure 47: Outdoor Unit Connection Cover Removal (HV3, HLV)

Tubing Cover

Bracket for

Main Power Cables

When tightening the are nut with a torque wrench, ensure the direc-

tion for tightening follows the arrow on the wrench.

Table 25: Torque Wrench Tightening

Outside Diame-

ter (inches)

Torque (lbs-ft)

1/4

13-18

3/8

24.6-30.4

1/2

39.8-47.7

5/8

45.6-59.3

HSV3

Tubing

Cover

Conduit

Cover

Terminal Block

HV3, HLV

Do not thread liquid or gas piping through bracket used to hold main pow-

er cables (for HSV3 model).

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REFRIGERANT PIPING CONNECTIONS

Single Zone Wall Mount Outdoor Unit Connections

(HSV3, HV3, HLV) - Continued

Outdoor Unit Connections

Figure 48: Pipe Attachment Figure 49: Outdoor Unit Piping Connection (HSV3)

Figure 50: Outdoor Unit Piping Connection (HV3, HLV)

Outdoor Unit

Gas Piping

(Larger diameter)

Liquid Piping

(Smaller diameter)

Torque Wrench

Bracket for

Main Power

Cables

HSV3

Outdoor Unit

Torque wrench

Liquid Piping

(Smaller diameter)

Gas Piping

(Larger diameter)

HV3, HLV

Refrigerant Piping Connections

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REFRIGERANT PIPING CONNECTIONS

Single Zone Wall Mount Outdoor Unit Connections

(090HEV, 090HXV, 120HEV, 120HXV)

1. Remove the tubing cover by loosening the fastening screws (Figure 51).

2. Align the center of the refrigerant pipe and corresponding

connection as shown in Figure 52.

3. Refer to Figure 51 for correct liquid and gas pipe attachment onto

outdoor unit.

4. Place a couple of drops of refrigerant oil on the opening rim of the

flare before assembling. Ensure you do not add any

contaminants. Tighten the flare nut initially by hand.

5. Finish tightening the flare nut with a torque wrench until the wrench

clicks. Follow torque guidelines in Table 26.

Outdoor Unit Connections

Figure 51: Outdoor Unit Cover Removal and Piping Connection

(090HEV, 090HXV, 120HEV, 120HXV)

To rque wrench

Conduit Cover

090HEV, 090HXV

120HEV, 120HXV

Tubing Cover

Gas Piping

(Larger diameter)

Liquid Piping

(Smaller diameter)

When tightening the are nut with a torque wrench, ensure the direc-

tion for tightening follows the arrow on the wrench.

Table 26: Torque Wrench Tightening

Outside Diame-

ter (inches)

Torque (lbs-ft)

1/4

13-18

3/8

24.6-30.4

1/2

39.8-47.7

5/8

45.6-59.3

Figure 52: Pipe Attachment

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REFRIGERANT PIPING CONNECTIONS

Single Zone Wall Mount Outdoor Unit Connections (180HEV)

1. Remove the tubing cover by loosening the fastening screws (Figure 53).

2. Align the center of the refrigerant pipe and corresponding

connection as shown in Figure 52 (on previous page).

3. Refer to Figure 54 for correct liquid and gas pipe attachment onto

outdoor unit.

4. Place a couple of drops of refrigerant oil on the opening rim of the

flare before assembling. Ensure you do not add any

contaminants. Tighten the flare nut initially by hand.

5. Finish tightening the flare nut with a torque wrench until the wrench

clicks. Follow torque guidelines in Table 26 (on previous page).

Figure 53: Outdoor Unit Connection Cover Removal (180HEV)

Figure 54: Outdoor Unit Piping Connection (180HEV)

Terminal Block

Bracket for

Main Power Cables

Tubing

Cover

180HEV

Screw

Outdoor Unit

Torque wrench

Gas Piping

Liquid Piping

Bracket for Main

Power Cables

(Larger diameter)

(Smaller diameter)

180HEV

Do not thread liquid or gas piping through bracket used to hold main

power cables.

Outdoor Unit Connections

Refrigerant Piping Connections

Due to our policy of continuous product innovation, some specifications may change without notification.

REFRIGERANT PIPING CONNECTIONS

Outdoor Unit

Torque wrench

Liquid Piping

(Smaller diameter)

Gas Piping

(Larger diameter)

Single Zone Wall Mount Outdoor Unit Connections (240HEV)

Tubing

Cover

Conduit Panel

Cover

Terminal Block

240HEV

Screw

Outdoor Unit Connections

Figure 55: Outdoor Unit Cover Removal (240HEV)

Figure 57: Outdoor Unit Piping Connection (240HEV)

1. Remove the tubing cover by loosening the fastening screws (Figure 55).

2. Align the center of the refrigerant pipe and corresponding

connection as shown in Figure 56.

3. Refer to Figure 57 for correct liquid and gas pipe attachment onto

outdoor unit.

4. Place a couple of drops of refrigerant oil on the opening rim of the

flare before assembling. Ensure you do not add any

contaminants. Tighten the flare nut initially by hand.

5. Finish tightening the flare nut with a torque wrench until the wrench

clicks. Follow torque guidelines in Table 27.

Figure 56: Pipe Attachment

Table 27: Torque Wrench Tightening

Outside Diame-

ter (inches)

Torque (lbs-ft)

1/4

13-18

3/8

24.6-30.4

1/2

39.8-47.7

5/8

45.6-59.3

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REFRIGERANT PIPING CONNECTIONS

Indoor Unit Connections

Chassis cover

Follow the steps below and refer to the illustrations on this page to connect piping to the Single Zone indoor unit. To see specific bundling of

piping and drain hose, see Section, “Bundling and Cutting Line” on page 54. Also, refer back to “Drain Hose Guidelines”

section for proper drainage slope during piping procedure.

1. Pull the screw cap at the bottom of the indoor unit (Figure 58).

2. Unscrew the three (3) screws at the bottom of the chassis cover.

3. Remove the chassis cover, being careful not to scratch the main

horizontal vane.

Figure 58: Removing Chassis Cover from Indoor Unit.

4. From the rear of the indoor unit, pull the tubing holder away from

the unit as shown in Figure 59.

5. Remove the pipe port cover.

6. Position the tubing by unfolding the tubing and bending the tubing

slowly downward first, as shown below.

Bending the tubing directly left or right, without bending downward rst,

may cause damage.

Figure 59: Bending Pipe Tubing at Rear of Indoor Unit.

Unfold

slowly

downward

Bend from

downward position

Do not bend tubing

directly backwards

or to the sides

without bending

downward rst!

This may cause

damage!

Piping to Indoor Unit (HSV3, HLV, HXV)

Refrigerant Piping Connections

Due to our policy of continuous product innovation, some specifications may change without notification.

REFRIGERANT PIPING CONNECTIONS

1. Follow steps 1 through 6 on the previous page to connect piping

to the rear of the indoor unit.

HV3, HEV and HXV single-zone models require an additional conduit

“bracket/nut” to be installed at the rear of the indoor unit. Follow the

steps below for correct placement for your unit model.

2. Set the conduit by using the bracket and “D” screws from the

accessory kit. This must be done prior to permanent placement

of the piping to the rear of the unit, otherwise you won’t be able

to reach the conduit once piping and drain hose are in place and

anchored.

• For specific bracket placement, see each figure relating to the

specific single-zone model.

Type “D” Screws

HV3 Models

Conduit Bracket

Figure 60: Installing Bracket for Conduit (HV3)

Figure 61: Installing Bracket for Conduit (090HEV)

Figure 62: Installing Bracket for Conduit (120HEV)

Figure 63: Installing Bracket for Conduit (180HEV, 240HEV)

Piping to Indoor Unit - Conduit Bracket Placement (HV3, HEV)

Indoor Unit Connections - Conduit Bracket Placement

Pay attention to bracket placement on each single zone units. Your mod-

el might be slightly different from gure shown in this manual.

For specic bundling (taping) techniques of the Pipe and Drain Hose,

see Section, “Bundling and Cutting Line” on page 54.

090HEV

Conduit

Bracket

Type

“D” Screws

Nut

Bracket

Conduit

Type “D” Screws

Nut

Bracket

Conduit

120HEV

Conduit

Bracket

Type “D” Screws

180HEV, 240HEV

Nut

Bracket

Conduit

Bracket

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REFRIGERANT PIPING CONNECTIONS

Bundling and Cutting Line

Piping and cabling must be insulated and bundled together correctly for safety and usage. Follow proper methods and procedures as outlined

here and on the next pages to ensure installation and piping are correctly installed.

Insulation material

As shown in Figure 64, the connection pipe, along with the indoor

unit pipe are fully encased in insulation material.

1. Bind together the two pipes, using vinyl tape. Make sure there

are no gaps during the binding.

2. Be sure the tube cutting line is placed upward (Figure 65).

3. Verify that rear piping house section is wrapped with vinyl tape.

• Use a narrow type of vinyl tape for this step.

4. Continue to wrap the Indoor unit pipe as connected to the outdoor

connection pipe as shown in Figure 66.

Figure 64: Piping with Insulation Material

Figure 65: Correct Cutting Line Placement

Figure 66: Wrapping Connection Pipe to Indoor Unit’s Pipe

Figure 67: Bundling Pipe and Drain Hose, Rear of IDU

Figure 68: Bundling and Placement at Rear of IDU

Gas Pipe

Liquid Pipe

Cutting Line

Correct Incorrect

Vinyl tape(narrow)

Connection pipe

Connecting cable

Vinyl tape (wide)

Wrap with vinyl tape

Indoor unit pipe

Pipe

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

5. Using a wider vinyl tape, bundle the piping and drain hose togeth-

er (Figure 67).

• Tape should be sufficient to cover the piping in order to fit into the

rear piping housing area at the back of the indoor unit (Figure 68).

Drain hose

Connecting pipe

Connecting

cable

Tape

Drain hose

Refrigerant Piping Connections

Due to our policy of continuous product innovation, some specifications may change without notification.

REFRIGERANT PIPING CONNECTIONS

Liquid Pipe

Communication Cables

Gas Pipe

Power Wiring

Insulation

Surface of

Indoor Unit Casing

Field-Provided

Pipe Insulation

Refrigerant Piping Insulation

To prevent heat loss/heat gain through the refrigerant piping, all refrigerant piping including liquid lines and vapor lines must be insulated

separately. Insulation must be a minimum 1/2″ thick, and thickness may need to be increased based on ambient conditions and local codes.

All refrigerant piping including field-provided isolation ball valves, service valves, and elbows must be completely insulated using closed-cell

pipe insulation. All insulation joints must be glued with no air gaps. Insulation material must fit snugly against the refrigeration pipe with

no air space between it and the pipe. Insulation passing through pipe hangers, inside conduit, and/or sleeves must not be compressed.

Protect insulation inside hangers and supports with a second layer. All pipe insulation exposed to direct sunlight and deterioration-produc-

ing elements must be properly protected with a PVC-aluminum vapor barrier jacket, or alternatively placed in a weather-resistant enclosure

such as a pipe rack with a top cover. The design engineer should perform calculations to determine if the factory-supplied insulation jackets

have sufficient thickness to meet local codes and to avoid sweating at jobsite conditions. Maximum refrigerant pipe temperature is 227 °F;

minimum refrigerant pipe temperature is -4 °F. Add additional insulation if necessary.

Figure 69: Typical Pipe Insulation, Power Wire and

Communications Cable Arrangement

Figure 70: Typical Insulation

Butt-Joint at Indoor Unit Casing

Refrigerant Piping Insulation

Figure 71: Typical Refrigerant

Flare Fitting Insulation Detail

• Do not insulate gas and liquid pipes together as

this can result in pipe leakage and malfunction

due to extreme temperature fluctuations.

• Be sure to fully insulate the piping connections.

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REFRIGERANT PIPING CONNECTIONS

1. Typical location (Air-conditioned location): When the piping passes through an indoor area where the indoor unit operates.

• Apartment, classroom, office, mall, hospital, etc.

2. Special location (Air-conditioned location):

1. When the location is air conditioned, but there is severe temperature/humidity difference due to high ceilings

• Church, auditorium, theater, lobby, etc.

2. When the location is air conditioned, but internal temperature/humidity are high

• Bathroom, swimming pool, locker room, etc.

3. Typical location (Non-Air conditioned location): When the piping passes through an indoor area where the indoor unit

does not operate.

• Hallway or a dormitory or school, etc.

Minimum Refrigerant Pipe Ethylene Propylene Diene Methylene (EPDM) Insulation Wall Thickness Requirements

4. Special location (Non-Air conditioned location): If conditions 1 and 2 below are present.

1. When the piping passes through an indoor area where the indoor unit does not operate.

2. When the humidity is high and there is no air flow in the location where the piping is installed.

• The thickness of the above insulation material is based on heat conductivity of 0.61 Btu/in/h/ft

/°F.

Follow locals codes when selecting EPDM insulation wall thickness.

Classication

Air-conditioned location Non-air conditioned location

1. Typical location 2. Special location 3. Typical location 4. Special location

Liquid pipe

ø1/4 inch

1/2 inch 1/2 inch 1/2 inch 1/2 inch

ø3/8 inch

≥ø1/2 inch 1/2 inch 1/2 inch 1/2 inch 1/2 inch

Vapor pipe

ø3/8 inch

1/2 inch

3/4 inch 3/4 inch

1 inch

ø1/2 inch

ø5/8 inch

ø3/4 inch

ø7/8 inch

ø1 inch

ø1-1/8 inches

3/4 inch

ø1-1/4 inches

1 inch 1 inch

ø1-3/8 inches

ø1-1/2 inches

ø1-3/4 inches

Table 28: Insulation Guidelines for Typical and Special Circumstances

Refrigerant Piping Insulation

Refrigerant Piping Connections

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REFRIGERANT PIPING CONNECTIONS

Pipe Sleeves at Penetrations

40 in40 in

Inside wall (concealed)

Floor (fire-resistance)

Area between fire-resistant

insulation and boundary wall

Roof pipe shaft

Outside wall

Outside wall (exposed)

Sleeve

Insulation

Lagging

Caulk

Band

Water-resistant layer

Sleeve with edge

Lagging

Mortar or other fire-resistant caulk

Fire-resistant insulation

When filling an access hole with mortar, cover the

area with steel plate so that the insulation will not

fall through. For this area, use fire-resistant

materials for both the insulation and cover. (Vinyl

cover should not be used.)

Pipe Sleeves at Penetrations

LG requires that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an

appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the

sleeve. Underground refrigerant pipe shall be routed inside a protective sleeve to prevent insulation deterioration.

All oor and wall penetrations should be properly sized and large enough to accommodate pipe diameter plus insulation thickness.

Figure 72: Pipe Sleeves at Penetrations

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REFRIGERANT PIPING CONNECTIONS

Air Purging

Air Purging Best Practices

Air purging is done to the piping system after all piping has been connected between the indoor and outdoor unit. This step is necessary to

be sure that air refrigerant can flow through the system without danger of leakage or pressure issues. Air and moisture that is left in the pip-

ing can lead to undesirable results and can cause damage to the working unit. It is important to go through a complete air purging cycle to be

sure that the lines are cleared out. Note that you may have to repeat this process should any air or moisture be found to remain in the piping.

After air purging and evacuating the lines, be sure to take a leak test for all piping and tubing.

Insufficient or incorrectly done air purging may lead to the following:

• Pressure in the system can rise.

• Operating current can rise.

• Cooling or heating efficiency falls.

• Moisture in the refrigerant circuit may freeze and block capillary tubing

• Water can lead to corrosion of parts in the system.

Air Purging with a Vacuum Pump - Preparation Steps

1. Verify that each set of pipes (liquid and gas) are properly con-

nected between the indoor and outdoor unit.

• Verify that all wiring for a test run has been completed.

2. Remove service valve caps from the gas and liquid valves at the

outdoor unit (Figure 73).

• Both the liquid and gas side service valves at the outdoor unit

should be kept closed at this step.

3. Set up the purging, hose connections by referring to Figure 74.

4. Do a Leak Test, by proceeding to Soap Water Method - Leak

Testing section on next page.

• Successful leak testing must be performed before Evacuation can

begin.

5. Go to Evacuation section, on page 60 to complete the purg-

ing process.

Evacuation

Outdoor Unit

Gas side

Liquid side

Valve

Caps

2-way valve(Close)

3-way valve(Close)

2-way valve(Close)

3-way valve(Close)

Figure 73: Removing Service Valve Caps - Outdoor Unit

Figure 74: Evacuation Setup

• Be sure to use a manifold valve for air purging. If it is not available,

use a stop valve for this purpose.

• Be sure that the knob of the three-way valve is always kept close.

Outdoor Unit

Lo Hi

Manifold Valve

Vacuum Pump

Charge Hose

Pressure

Gauge

Lo=Open

Hi=Close

Indoor Unit

Air Purging/ Evacuation Setup

Piping Bundle

Evacuation Table*

Tubing = Less than 33 ft. Tubing = More than 33 ft.

10 minutes or more 15 minutes or more

* Required time for evacuation when 30 gal/h vacuum pump is used.

Table 29: Evacuation Table

Refrigerant Piping Connections

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REFRIGERANT PIPING CONNECTIONS

Perform the leak test by pressurizing nitrogen gas to 400 psi on both the liquid and gas pipes. Test with the piping service valves closed. If

the pressure does not drop for twenty-four (24) hours, the system passes the test. If the pressure drops, there is a nitrogen leak in the sys-

tem. Find the leak, repair, and then test again.

Leak Test/Soap Method Check

Figure 75: Leak Test Diagram.

Leak Test

Leak Test Ambient Temperature Correction

If the ambient temperature changed between the time when

pressure was applied and when the pressure drop was checked,

adjust results by factoring in approximately 1.45 psi for each 2°F of

temperature difference.

Correction formula = (Ambient temperature when pressure was ap-

plied - Ambient temperature when pressure drop was checked) x 0.01.

Example:

When pressure (550 psig) was applied, the ambient temperature

was 80.6 °F; 24 hours later when pressure drop (540 psi) was

checked, ambient temperature was 68 °F.

Thus, 80.6 - 68 x 0.01 = 0.126. In this case, the pressure drop of

0.126 was due to temperature difference, therefore, there is no leak

in the refrigerant piping system.

Pressure Gauge Hookup

1. Connect the manifold valve (which includes the pressure gaug-

es), along with dry nitrogen gas cylinder to the service valves

using charge hose (Figure 75).

2. Pressurize the system to maximum 150 P.S.I.G. with dry nitrogen

gas and close the cylinder valve when the gauge reading reaches

150 P.S.I.G.

Lo Hi

Outdoor Unit

Manifold Valve

Charge Hose

Nitrogen Gas

Tank (Upright

Position)

Pressure

Gauge

Indoor Unit

Piping Bundle

Leak Test Using Nitrogen Tank

• To avoid nitrogen entering the refrigerant system in a liquid state,

the top of the cylinder must be higher than its bottom when you

pressurize the system.

• Be sure cylinder is used in a vertical standing position.

Soap Water Method - Leak Testing

1. Remove the caps from the 2-way and 3-way valves. See Figure 73.

2. To open the 2-way valve turn the valve stem counter-clockwise

approximately 90°, wait for about 2~3 sec, and close it.

3. While running the nitrogen gas tank hookup, apply a soap water

or a liquid neutral detergent on the indoor unit connection or

outdoor unit connections by using a soft brush.

4. While running the pressure gauge system, observe the connec-

tions for any leakage.

• If you see bubbles appearing at any of the connection points/joints

(at either inside and outside units), it is an indication of leakage.

5. Make a note of where the leaks are coming from along the liquid

and gas piping.

6. Disengage the nitrogen pressure by loosening the charge hose

connector at the Nitrogen cylinder (Figure 75 above).

7. Once system pressure is reduced back to normal range, discon-

nect hose from the cylinder.

8. At this point you will need to make all repairs to connections and

piping where bubbles were observed.

9. Once all repairs are made, repeat soap testing using nitrogen

cylinder and check for any further leaks.

10. Once system is leak free, proceed to Evacuation steps.

Use of combustible gases including oxygen, may result in re or explo-

sion.

Using nitrogen runs the risk of re and explosion. Inert gas (nitrogen)

should be used when checking plumbing leaks, cleaning or repairs of

pipes, etc.

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REFRIGERANT PIPING CONNECTIONS

Finishing the Job

Once the Evacuation procedure has been performed, follow the steps below to turn off all valves at the outdoor unit and safely disengage the

manifold valve, along with the vacuum pump. Refer back to the illustrations and tables on the previous pages as you go through the steps below.

Procedure

1. Using a wrench, turn the valve of the liquid stem counter-clock-

wise to fully open the valve (Figure 73).

2. Turn the valve of the gas stem counter-clockwise to fully open the

valve.

3. Loosen the charge hose connected to the gas side service port

slightly to release the pressure, and then remove the hose.

4. Replace the flare nut and its cap on the gas service port and

fasten the flare nut securely using an adjustable wrench.

• This process is very important to prevent leakage from the system.

5. Replace the valve caps at both gas and liquid side service valves

and then fasten them tightly.

• Once done, this will complete the air purging process with a vacu-

um pump.

Test Running

After leakage testing, and evacuation procedure the system should

be ready to start up for a test run. Follow the guidelines below for

proper procedure.

• Check that all tubing, piping and wiring are properly connected.

• Make sure that the gas and liquid service valves are fully open.

• Start up the system and do a test run.

• As system is up and running verify all is in working order and make

notes as needed to work around any issues that might crop up.

Evacuation

After successful leak testing has been performed, follow Evacuation procedure. Follow the same steps for charge hose hookup to the system.

See Figure 74 on previous page for proper hookup.

Evacuation of Lines

Finishing Up

Procedure

1. Confirm that the “Lo” knob of the manifold valve is open. Refer

back to Figure 74.

2. Confirm that the “Hi” knob of the manifold valve is left closed.

3. Run the Vacuum pump.

• Operate pump until the system has been evacuated down to 300

microns.

• Run pump an additional 15 minutes after reaching micron level.

The duration of the operation of the vacuum pump will vary accord-

ing to pipe length and the capacity of the pump. Refer to Table 29 for

accurate time duration.

4. Turn off the pump and leave the connections secured to the two

service valves.

5. Wait 5 minutes.

6. If the system fails to hold 500 microns or less, check all connec-

tions for tight fit and repeat the evacuation procedure.

7. Once, desired vacuum is reached, close the “Lo” knob of the

manifold valve and stop the vacuum pump.

8. Proceed to Finishing the Job section, below.

Refrigerant Piping Connections

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REFRIGERANT PIPING CONNECTIONS

Remote Controller

Installing Batteries into Remote

Controller

As part of test running, you will need to insert batteries and power on

the remote controller. To insert the batteries follow the steps below. For

information on using the remote controller, refer to its owner’s manual.

Procedure

1. The remote controller needs two AAA (1.5V) batteries for operation.

Remove the battery cover from the back of the remote controller

(Figure 76).

• Push downward on the tab at the top of the battery cover and then

lift up to remove.

2. Insert the two new batteries.

• Align batteries by the (+) and (-) sides.

• The interior battery compartment of the remote controller will have

clear markings for the (+) and (-) placement.

3. Verify that the batteries have “clicked” into the compartment and

are firmly engaged with the contacts on either side of them.

4. Reattached the back cover of the remote controller.

5. Proceed with powering on the remote controller and usage as

needed.

1. Push down on tab

2. Lift cover

3. Insert 3

batteries

Single Zone Remote Controller - Rear View

Battery Cover

Ta b

Battery

Cover

Figure 76: Remote Controller - Installing Batteries

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REFRIGERANT PIPING CONNECTIONS

Pump Down, Cooling Only Mode

Use a vacuum pump that can evacuate down to 500 microns.

1. If moisture remains in the piping after the system is evacuated for two (2) hours, break the vacuum (down to 7.5 psi with nitrogen gas).

2. Evacuate the system again with the vacuum pump for at least one (1) hour to 500 microns

3. If the system does not reach 500 microns within two (2) hours, repeat the vacuum break and evacuation procedure until the gauge does

not rise.

Pump Down Procedure

This procedure is performed when a unit has to be relocated or the refrigerant circuit is serviced. “Pumping down” is a term used to mean

collecting all refrigerant into the outdoor unit without the loss of any refrigerant. Follow the procedure and guidelines below to safely collect

refrigerant back into the outdoor unit. Always adhere to and be familiar with local codes regarding the handling of refrigerant.

The system must be placed in Cooling mode in order to proceed with the pump down procedure. If needed, refer to the sections on the next

page for proper steps to place the unit into Cooling Mode.

Perform Pump Down procedure only in the cooling mode.

1. Connect a low-pressure gauge with manifold hose to the charge

port on the gas line service valve.

2. Open the gas line service valve halfway.

3. Purge the air in the manifold hose using the refrigerant.

4. Close the liquid line service valve all the way.

5. Turn on the units power switch and start the cooling mode oper-

ation.

6. Observe the pressure gauge reading. When it gets to 1 to 0.5 kg/

cm2G (14.2 to 7.1 P.S.I.G), fully close the gas line valve and then

immediately turn the unit off.

• Pump down procedure is complete at this time and all refrigerant

should be collected into the outdoor unit.

Enabling Cooling Only Mode

Before running the Pump Down procedure, you must place the unit

into Cooling Only Mode. In order to be able to run Cooling Only

Mode, you must enter the unit into the Installer Mode by pressing the

Reset button and the JET MODE button simultaneously.

1. Shut down power to system completely.

2. Enter the Installer Mode as stated in paragraph above.

3. Set code to 45.

4. Press Power-ON button and select the code number 45.

• Unit should beep to acknowledge that code has been received.

5. Turn off power.

• Let unit cycle off for a minimum of 30 seconds.

6. Turn power back on to system.

Disabling Cooling Only Mode

After Pump Down procedure has been performed, you will need

to disable Cooling Only Mode, and place the unit back into normal

operating mode. Follow the procedure below.

1. Shut down power to system completely.

2. Enter the Installer Mode as stated in paragraph above.

3. Set code to 46.

4. Press Power-ON button and select the code number 46.

• Unit should beep to acknowledge that code has been received.

5. Turn off power.

• Let unit cycle off for a minimum of 30 seconds.

6. Turn power back on to system.

• Once the system is in Installer Mode (with Cooling Only Mode initi-

ated), automatic operation is suspended.

• Once Cooling Only Mode is disabled, the unit will return to normal

operation.

• Installer Code cannot be entered if the unit is running. The system

must be completely powered off.

• All Installer Code numbers must be entered into the system during

Power Off state. (Compete shutdown of the system.)

• WLAN Module’s communication time will lag by about 1 minute after

unit is turned back on, and in normal operating mode.

• Entire lock or Mode lock cannot be set if you set heating or automat-

ic operation through the central controller.

Never air purge with refrigerant as it can lead to refrigerant leakage which can cause bodily harm and injury, especially if inhaled.

Never inhale or handle refrigerant directly. Doing so may

cause bodily harm and injury.

Electrical Wiring

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ELECTRICAL WIRING

Capacity of Power Supply Wiring (current) Recommended Minimum Distance

1,2

100V or more

10A 12 inches

50A 20 inches

100A 40 inches

Exceed 100A 60 inches

The gures above are based on parallel lengths up to 328 feet long. For lengths in excess of 328 feet, the

distances will have to be recalculated in direct proportion to the additional line lengths involved.

If the power supply waveform continues to exhibit some distortion, the space between the power wiring and

communication cable should be increased.

• Position the power wiring a minimum of two (2) inches away from the communication cables to avoid operation problems caused by electri-

cal interference. Do not run both in the same conduit.

• If it is necessary to run the power wiring and communication cable alongside each other and cannot be avoided, see Table 30 below for

minimum recommended distances.

Table 30: Power Wire and Communications Cable Minimum Required Separation Minimum Allowable Distances

• Do not secure the power wiring and communication cables together.

• Do not run the power wiring and the communication cable in the

same conduit. Doing so will result in communication issues due to

electrical noise and motor current leakage.

Separating Power Wires and Communication Cables

• All power wiring and communication cable installa-

tion must be performed by authorized service pro-

viders working in accordance with local, state, and

National Electrical Code regulations related to electrical equipment

and wiring, and following the instructions in this manual.

• Undersized wiring may lead to unacceptable voltage at the unit and

may cause unit malfunction and be a fire hazard.

• Properly ground the Single Zone outdoor and indoor unit. Ground

wiring is required to prevent accidental electrical shock during cur-

rent leakage.

• Ground wiring must always be installed by a qualied technician.

• Do not connect ground wire to refrigerant, gas, or water piping; to

lightning rods; to telephone ground wiring; or to the building plumb-

ing system. Failure to properly provide a National Electrical Code-ap-

proved earth ground can result in equipment malfunction, property

damage, electric shock, physical injury or death.

• Install appropriately sized breakers / fuses / overcurrent protection

switches and wiring in accordance with local, state, and National

Electrical Code regulations related to electrical equipment and wir-

ing, and following the instructions in this manual. Using an oversized

breaker or fuse may result in equipment malfunction, property dam-

age, electric shock, physical injury or death.

• Consider ambient conditions (temperature, direct sunlight, inclement

weather, etc.) when selecting, installing, and connecting the power

wiring.

• Properly ground the Single Zone outdoor and indoor unit. Inproper-

ly ground wire can cause communication problems from electrical

noise, and motor current leakage. Ground wiring must always be in-

stalled by a qualied technician.

• If the system operates in reversed phase, it may damage the com-

pressors and other components.

• If there is a possibility of reversed phase, phase loss, momen-

tary blackout, or the power goes on and off while the system is

operating, install a field-supplied phase loss protection circuit.

General Information and Safety Guidelines

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ELECTRICAL WIRING

Power Supply / Power Wiring Specifications

• Single Zone systems operate at 1Ø, 208-230V, 60Hz, with the exception of Mega 115V, which operates at 1Ø, 115V, 60Hz.

• Power supply, wire type and size should be selected based on National Electrical Code and local codes. Maximum allowable voltage fluctua-

tion ±10% or nameplate rated value. Refer to Figure 77 for wiring guidelines.

• Properly ground the Single Zone outdoor unit and indoor unit per National Electrical Code and local codes.

• Use only copper wiring that is stranded and shielded with the wires separately insulated.

• Ground wire should be longer than the common power/communication wires.

• Refer to the inside of the Chassis Cover for Circuit and Terminal Block Diagrams for your model unit.

• Always match color codes of each wire and follow wiring diagram.

Figure 77: Single Zone Outdoor and Indoor Wiring

and Communications Cable Diagram

:Copper Wire

Terminate multiple power wires of

the same gauge to both sides.

Do not terminate two wires on

one side.

Do not terminate different gauge

wires to a terminal block.

Ring Terminal

Power Wiring

Connecting the Power Wiring Guidelines

Best practice dictates using ring or spade terminals to terminate power wiring at the

power terminal block (Figure 78).

If ring terminals or spade clips are not available, then:

Do not terminate different gauge wires to the power terminal block. Slack in the wiring may

generate heat and re.

• When terminating wires of the same thickness, follow the instructions demonstrated

in the illustrations below at Figure 79.

• Firmly attach the wire; secure in a way to prevent external forces from being impart-

ed on the terminal block.

• Use an appropriately sized screwdriver for tightening the terminals.

• Do not over tighten the connections; overtightening may damage the terminals.

Figure 78: Close up of a Typical Ring Terminal

Figure 79: Proper and Improper Power Wiring Connections

Power Wiring Specications and Best Practices

6/16” ± 2/16”

13/16”

GN/YL

AWG_“A”

Power Wiring, Ground

to Outdoor Unit

Power Wiring, Ground,

Communication Cable

From Outdoor Unit

To Indoor Unit

13/16”

GN/YL

AWG_“B”

Line Voltage

(208/230V)

GN/YL = (Ground, Yellow)

6/16” ± 2/16”

Electrical Wiring

Due to our policy of continuous product innovation, some specifications may change without notification.

ELECTRICAL WIRING

• If power wires are not properly terminated and firmly attached, there is risk of fire, electric shock, and physical injury or death.

• Never ground the shield of the communications cable to the indoor unit frame or other grounded entities of the building.

Power Wiring Specications and Best Practices

Power Supply / Power Wiring Specifications - Continued

Communication Cables Between the Single Zone Unit and the Controller

• AC Ez or Simple Central Controller: field-provided, 18 gauge, stranded four-conductor communication cable (shielded).

• All other Central Controllers: field-provided, 18 gauge, stranded two-conductor communication cable (shielded).

• Insulation material as recommended by local code.

• Connect all central control devices such as AC Smart II, AC Smart Premium, ACP, BACnet® and LonWorks® gateways, and energy recovery

ventilators all on the same cable. Order does not matter. Polarity does. Keep “A” terminals with “A” terminals, and “B” terminals with “B” terminals.

• Starting at the outdoor unit, terminate the cable on terminals Internet A and Internet B. Route the cable as needed between each device.

• Use a four (4) conductor, shielded, stranded cable between the

Single Zone outdoor unit and the indoor unit.

• Minimum 18 gauge shielded CVVS or CPEVS cable.

• Insulation material as required by local code.

• Rated for continuous exposure of temperatures up to 140 °F.

• Maximum allowable cable length: 984 feet.

• Firmly attach the cable; provide slack but secure in a way to pre-

vent external forces from being imparted on the terminal block.

• Wiring should be completed without splices.

• Terminate the cable shield to a grounded surface at the outdoor

unit only.

• Always verify the communication cable is connected to a communications terminal on the Single Zone unit. Never apply line

voltage power to the communication cable connection. If contact is made, the PCBs may be damaged.

• The shield of the communications cable connecting the outdoor unit to the indoor unit should be grounded only to the outdoor unit frame.

• Tie the shield of each cable segment together using a wire nut at each indoor unit. Maintain polarity throughout the communication network.

• Position the outdoor unit communications cables away from the power wiring. Refer to minimum spacing requirements provided in

Table 30.

• Never use a common multiple-core communications cable. Each communications bus shall be provided a separate cable (i.e., be-

tween outdoor unit and indoor unit).

General Communication Cable Specifications

• Never apply line voltage power to the communications cable terminal block. If contact is made, the PCBs may be damaged.

• Always include some allowance in the wiring length when terminating. Provide some slack to facilitate removing the electrical

panels while servicing.

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Single Zone Model Type Remote Controller Model

LS091HSV3, LS121HSV3 AKB73855712

LS181HSV3 AKB73855712

LS240HSV3 AKB73855713

LS307HV3, LS360HV3 AKB73855713

Single Zone Extended Pipe System

LS240HLV, LS300HLV, LS360HLV AKB74055401

Single Zone Mega System

LS090HEV, LS120HEV AKB73835305

LS180HEV, LS240HEV AKB73835305

Single Zone Mega 115V System

LS090HXV, LS120HXV

AKB73456121

Controllers

Refer to Table 31 as to which remote controller models to use for each Single Zone model types. Once all wiring is connected to the indoor

and outdoor units be sure to test the accompanying remote controllers for performance. As always, follow all safety warnings and notes when

operating the Single Zone units using the remote controller.

Table 31: Single Zone Models and Associated Remote Controller Model

Additionally, most of the Single Zone High Efficiency and Extended

Pipe outdoor models can use the following controllers when accom-

panied with the PI 485 VNet Accessory:

• AC Ez

• AC Smart Premium

• ACP

• BACnet®

• LonWorks®

• LGMV

Mega 115V is compatible with the following controllers:

• PREMTB10U

• PQDSB1

• PZCWR5C1

• LS091HSV3, LS121HSV3 models cannot use PI-485, or

the controller accessories.

• Single Zone Mega and Mega 115V systems cannot use PI-

485, or the controller accessories mentioned on this page.

They can use LGMV.

Electrical Wiring

Due to our policy of continuous product innovation, some specifications may change without notification.

ELECTRICAL WIRING

Indoor Unit Electrical Connections

Overview - Connecting Indoor Unit Electrical Wiring

The general guidelines for connecting electrical and communication cables to the indoor unit are the same for each of the Single Zone Wall

Mounted indoor units, however, the actual connections on the terminal block will differ. See each illustration for the Single Zone unit model

that you are wiring for correct contact on each terminal block. Depending on your indoor unit, the location of the terminal block on the indoor

unit might vary slightly from the images shown in this section.

• Be sure that main power to the unit is completely off before proceed-

ing with these steps.

• Follow all safety and warning information outlined at the beginning

and throughout this manual. Failure to do so, may cause bodily injury.

Procedure

Be sure there is no power going through the Single Zone system before

proceeding with these connections as there be a risk of electrical shock

and bodily injury.

1. At the bottom panel of the indoor unit, unsnap the latches which

cover the phillips screw heads as shown in Figure 80.

• Normally, there are three (3) screws on the panel, however your

indoor unit model may differ.

2. Using a phillips head screwdriver, remove the screws from the

bottom panel of the indoor unit and set aside (Figure 81).

3. Remove the bottom panel (Figure 82).

• Removal is necessary to gain access to the terminal block which is

situated at the bottom of most indoor units.

• Note that the electrical/communications wiring is usually routed

through the back/bottom of the indoor unit (through a knockout

panel) as shown on the next page (Figure 83).

4. Using a screwdriver, connect the wires as shown on the next

page (Figure 84).

• Each wire should be securely attached to the terminal block.

• Pay attention to the location/connection of the green/yellow ground

cable.

Figure 80: Latch over Screws on Bottom Panel, Indoor Unit

Figure 81: Remove Screws from Bottom Panel

Figure 82: Remove (and Reattachment) Bottom Panel

• Follow all safety and warning information outlined at the beginning

and throughout this manual. Failure to do so, may cause unit failure.

• Some units might require you to remove the Control Cover from the

terminal block area. Most Control Covers are attached with a phillips

screw head.

• Connect the electrical cable to the indoor unit by connecting the

wires to the terminals on the control board individually according to

the outdoor unit connection. Be sure that the color of the wires at the

outdoor unit along with the terminal numbers are the same as those

for the indoor unit.

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Figure 83: Indoor Unit Knockout (Communication Wires)

Figure 84: Indoor Unit Terminal Block with Grounding Cable

(Example Only)

Indoor Unit Electrical Connections

Connecting Indoor Unit Electrical Wiring - Continued

5. When done, reattach the bottom panel to the indoor unit, being

careful to align panel using the rear tabs.

• You might need to give the panel a gentle tap with the palm of your

hand to be sure 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 80 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 turn pow-

er on at this time and proceed to complete all other piping, (along

with drain hose) and wiring to the system.

Electrical Wiring

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ELECTRICAL WIRING

Control Cover

Bottom Panel

Electrical Wiring

Knockout

Indoor Unit

HLV

1(L1)

2(L2)

1(L )2(N )

Power Connection Cable

Grounding Cable

Figure 85: HLV Indoor Units - Terminal Block Connections

Figure 86: HV3 and 240HSV3 Indoor Units - Terminal Block Connections

Indoor Unit Electrical Connections

Terminal Block Connection for HLV

See Figure 85 for specific terminal block wiring for all following

Single Zone models:

LSN240HLV

LSN300HLV

LSN360HLV

Terminal Block Connection for HV3

See Figure 86 for specific terminal block wiring for all following

Single Zone models:

LSN307HV3

LSN360HV3

Terminal Block Connection for

240HSV3

See Figure 86 for 240HSV3 Single Zone terminal block connection.

The connections are also identical for LSN307HV3 and LSN360HV3

Single Zone models.

1(L1) 2(L2) 3

1(L1) 2(L2 )

Power Connection Cable

Control Cover

307HV3, 360HV3

240HSV3

Knockout Cover

Bottom Panel

Terminal Block Connections

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Terminal Block Connection for

091HSV3, 121HSV3, 181HSV3

See Figure 87 for specific terminal block wiring for all following

Single Zone models:

LSN091HSV3

LSN121HSV3

LSN181HSV3

Terminal Block

Expanded View

Grounding

Cable

Connecting Cables

Cable Restrainer

091HSV3,121HSV3

181HSV3

Indoor Unit Electrical Connections

Figure 87: 091HSV3, 121HSV3, 181HSV3 Indoor Units - Terminal

Block Connections

Figure 88: Mega 090HEV, 120HEV, 180HEV, 240HEV Indoor Units

- Terminal Block Connections

• Pay special attention to the location of the grounding cable and the

cable restrainer around the other electrical/communication cables

when connecting.

• Note that the terminal block is located behind the drain hose and

bundled piping on these units.

Terminal Block Connection for Mega

090HEV, 120HEV, 180HEV, 240HEV

See Figure 88 for specific terminal block wiring for all following

Single Zone models:

LSN090HEV

LSN120HEV

LSN180HEV

LSN240HEV

Control Cover

1(L1) 2(L2) 3

1(L1) 2(L2)

Power connecting cable

Terminal

Block

090HEV, 120HEV

180HEV, 240HEV

Electrical Wiring

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ELECTRICAL WIRING

Terminal Block Connection for Mega 115V

090HXV, 120HXV

See Figure 88XX for specific terminal block wiring for all following Single

Zone models:

LSN090HXV

LSN120HXV

Indoor Unit Electrical Connections

Terminal Block

Expanded View

Grounding

Cable

Connecting Cables

Cable Restrainer

090HXV, 120HXV

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ELECTRICAL WIRING

Outdoor Unit Electrical Connections

HLV

Electrical Connections

Outdoor Unit

Terminal Block

Over 0.2”

Conduit Panel

Conduit Panel Cover

Connection/Communication

Cable (Leading to Indoor Unit)

Power Cord

1(L1) 2(L2) 1(L1) 2(L2)

HLV

Connecting Outdoor Unit Electrical Wiring

The general guidelines for connecting electrical and communication cables to the outdoor unit are the same for each of the Single Zone Wall

Mount units, however, the actual connections on the terminal block will differ. See each illustration for the Single Zone unit model that you are

installing for correct wiring of each terminal block.

• Be sure that main power to the unit is completely off before pro-

ceeding with these steps. Follow all safety and warning information

outlined at the beginning of this manual. Failure to do so, may cause

bodily injury.

• Be sure that a circuit breaker or some other emergency power cutoff

device is in place before any power wiring is done to the system.

Failure to do so, may cause bodily injury or death.

• Never touch any power lines or live cables before all power is cutoff

to the system. To do so, may cause bodily injury or death.

Air

Conditioner

Main Power Source

Circuit Breaker

Use a circuit breaker

or time delay fuse

Figure 89: Circuit Breaker

Figure 90: HLV Outdoor Unit - Electrical Connections

Procedure

Refer to Figure 89 below, for an example 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 proceeding 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 screwdriver, remove the conduit panel cover

from the outside unit.

2. Before proceeding, inspect all wiring inside the casing to be sure

they are secure and have not come loose during transportation

and installation of the outdoor unit.

• Loose wires can cause the wiring to burn out quickly.

• Inspect wires for any damage or cracks (manufacturing defects).

3. Confirm that electrical power supply capacity is sufficient to run

the unit. See specifications sheets at the beginning of this instal-

lation manual for details on power.

4. Confirm that you are using the right gauge size for wiring to

proceed.

5. Using a screwdriver, connect the wires as shown in Figure 90.

• Figure 90 shows the connections for the HLV models, however the

basic connection procedure is the same for all models. Use this

diagram as a general reference on connecting the power cables.

• Each wire should be securely attached to the terminal block.

• Bundle the cabling by using a cable restrainer.

• Pay attention to the location/connection of the green/yellow

grounding cable; as in some models the connection may be located

to the side of the actual terminal block.

• Maintain a minimum of .2” of wire length from terminal block to

cable bundle.

Terminal Block Connection for HLV

See Figure 90 for specific terminal block wiring for all following

Single Zone outdoor unit models:

LSN240HLV

LSN300HLV

LSN360HLV

Electrical Wiring

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ELECTRICAL WIRING

Terminal Block Connection for

091HSV3, 121HSV3

See Figure 92 for specific terminal block wiring for all following

Single Zone outdoor unit models:

LSU091HSV3

LSU121HSV3

Outdoor Unit Electrical Connections

Terminal Block Connection for HV3

See Figure 91 for specific terminal block wiring for all following

Single Zone outdoor unit models:

LSU307HV3

LSU360HV3

Connecting Outdoor Unit Electrical Wiring - Continued

HV3 (All models)

181HSV3, 240HSV3

Electrical Connections

Outdoor Unit

Terminal Block

Over 0.2”

Conduit Panel

Connection/Communication

Cable (Leading to Indoor Unit)

Power Cord

Conduit Panel Cover

1(L1) 2(L2) 1(L1) 2(L2 )

HV3

181HSV3, 240HSV3

Figure 91: HV3 and 181HSV3, 240HSV3 Outdoor Unit - Electrical

Connections

Figure 92: 091HSV3, 121HSV3 Outdoor Unit - Electrical Connections

Terminal Block Connections for

181HSV3 and 240HSV3

See Figure 91 for 181HSV3 and 240HSV3 Single Zone terminal

block connections. The connections are identical to the HV3

outdoor units.

091HSV3, 121HSV3

Terminal Block

Connection/Communication

Cable (Leading to Indoor Unit)

Power Cord

Conduit Panel

Tubing Cover

Over

0.2"

091HSV3, 121HSV3

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Outdoor Unit Electrical Connections

Terminal Block Connection for

090HEV, 120HEV

See Figure 93 for specific terminal block wiring for all following

Single Zone outdoor unit models:

LSU090HEV

LSU120HEV

Conduit panel

cover

Tu bing cover

Terminal block

Outdoor Unit

090HEV, 120HEV

1(L1) 2(L2)1(L1) 2(L2)

Power

connecting

cable

Power

cord

Cord clamp

Figure 93: 090HEV, 120HEV Outdoor Unit - Electrical Connections

Figure 94: 180HEV Outdoor Unit - Electrical Connections

Terminal Block Connection for

180HEV

See Figure 94 for specific terminal block wiring for all following

Single Zone outdoor unit models:

LSU180HEV

Terminal block

Conduit panel

Outdoor unit

Tubing cover

Over 0.2"

Power supply cord

Connecting cable

1(L1) 2(L2) 1(L1) 2(L2) 3

180HEV

Connecting Outdoor Unit Electrical Wiring - Continued

Electrical Wiring

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ELECTRICAL WIRING

Outdoor Unit Electrical Connections

Terminal Block Connection for HXV

See Figure 96 for specific terminal block wiring for all following

Single Zone outdoor unit models:

LSN090HXV

LSN120HXV

Figure 95: 240HEV Outdoor Unit - Electrical Connections

Figure 96: 090HXV, 120HXV Outdoor Unit - Electrical Connections

Terminal Block Connection for

240HEV

See Figure 95 for specific terminal block wiring for the following

Single Zone outdoor unit model:

LSU240HEV

Outdoor unit

Terminal block

Conduit Panel Cover

Over 0.2”

Conduit panel

Connecting

cable

Power supply

cord

1(L1)

2(L2)

1(L1)

2(L2)

1(L) 2(N)

3L N

1(L1)2(L2)

240HEV

Tubing cover

Terminal Block

1(L)

2(N) 3

Power

connecting

cable

Power

cord

Cord clamp

Conduit panel

cover

090HXV, 120HXV

Connecting Outdoor Unit Electrical Wiring - Continued

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Additional screens can be accessed by tabs on the main screen.

Additional screens include the following:

1. Cycleview (Figure 98): Graphic of internal components including:

• Compressors showing actual speeds

• EEVs

• IDUs

• Temperature and pressure sensors

• Four-way reversing valve

2. Graph: Full screen graph of actual high and low pressures and high

and low pressure limits. A sliding bar enables user to go back in

time and view data.

3. Control FTN: Enables user to turn on IDUs in 1.8 °F increments.

4. Useful Tab

• Unit Conversion: Converts metric values to imperial values.

• Actual inverter compressor speed

• Target inverter compressor speed

• Actual outdoor fan speed

• Target outdoor unit fan speed

• Actual superheat

• Target superheat

• Actual subcooler circuit superheat

• Target subcooler circuit superheat

• Main EEV position

• Subcooling EEV position

• Inverter compressor current transducer value

• Outdoor air temperature

• Actual high pressure/saturation temperature

• Actual low pressure/saturation temperature

• Suction temperature

• Inverter compressor discharge temperature

• Front outdoor coil pipe temperature

• Back outdoor coil pipe temperature

• Liquid line pipe temperature

• Subcooler inlet temperature

• Subcooler outlet temperature

• Average indoor unit (IDU) pipe temperature

• Inverter compressor operation indicator light

• Liquid injection

valves’ operation

indicator lights

• Hot gas bypass valve

operation indicator

light

• Four-way reversing

valve operation

indicator light

• Pressure graph

showing actual low

pressure and high

pressure levels

• Error code display

• Operating mode

indicator

• Target high pressure

• Target low pressure

• PCB (printed circuit board) version

• Software version

• Installer name

• Model number of IDUs

• Site name

• Total number of connected IDUs

• Communication indicators

• IDU capacity

• IDU operating mode

• IDU fan speed

• IDU EEV position

• IDU room temperature

• IDU inlet pipe temperature

• IDU outlet pipe temperature

• IDU error code

LG Monitoring View (LGMV) Diagnostic Software

LGMV software (PRCTSL1 and PRCTFE1) allows the service technician or commissioning agent to connect a computer USB port to the

Single Zone unit’s main printed circuit board (PCB) using an accessory cable without the need for a separate interface device. The monitor-

ing screen for LGMV allows the user to view the following real time data on one screen (Figure 97):

Figure 97: MV Real-time Data Screen

Figure 98: MV Cycleview

Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the unit installed.

Self Diagnosis Functions

Electrical Wiring

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ELECTRICAL WIRING

Self Diagnosis Functions

5. Data (Figure 99)

• Data Saving Start: Recording of real time data to a separate file created to be

stored on the user’s computer.

• Data Loading Start: Recorded data from a saved “.CSV” file can be loaded to

create an LGMV session.

6. Monitoring

• Electrical: The lower half of main screen is changed to show Inverter

Compressor Amps, Volts, Power Hz, Inverter control board fan Hz.

Figure 99: MV Control Indoor Units Screen

The software is available in a high version with all of the features listed above. The low version has all features as the high version without

Target High Pressure and Target Low Pressure values shown on main screen.

In lieu of connecting to the Water Source Unit (WSU), user has the option to connect to IDU with the use of a USB to RS-485 connector kit.

When connected through IDU, user will not be able to record data.

This software can be used to both commission new systems and troubleshoot existing systems. LGMV data can be recorded to a “.CSV” file

and emailed to an LG representative to assist with diagnostic evaluations.

Recommended Minimum PC Configuration:

Error Codes

LGMV software helps the service technician or commissioning agent

to troubleshoot system operation issues by displaying malfunction

codes (Figure 100). These error codes can be seen on the main

screen of the LGMV software program. For an overview of Single

Zone unit error codes, see Error Codes section. For detailed infor-

mation on how to troubleshoot individual error codes, see the Single

Zone Service Manual.

Figure 100: Error Code Screen

Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the units installed.

• CPU: Pentium

IV 1.6 GHz

• Main Memory: 1G

• Operating System: Windows

XP/Vista/7 32 bit (recommended),

64 bit

• Hard Disk: 600 MB when operating

• MS Office 2003, 2007 (recommended) for select reporting

functions

LG Monitoring View (LGMV) Diagnostic Software and Cable - Continued

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ELECTRICAL WIRING

LG SIMS - Self Diagnosis Functions

LG SIMs

WLAN Module

LG SIMs App

on Smart Phone

The SIMs WLAN module and the smart phone app together provide monitoring and troubleshooting capability for

LG Duct Free Systems. SIMs functions only with LG Duct Free products (Figure 101).

SIMs can display and graph operational data for the air conditioner system including the indoor unit and

the outdoor unit. SIMs also displays error codes and a troubleshooting guide. A full copy of the LG SIMs

Smart Inverter Monitoring System User’s Manual is available on the www.lghvac.com website.

To use SIMs you must be a trained HVAC service technician familiar with variable refrigerant flow

(VRF) systems in general and with LG’s Duct Free System products. You should understand the

inverter air conditioning operation cycle, the meaning of the data displayed by SIMs, and how to use the

data to troubleshoot the system.

Figure 102 shows a Multi F configuration used with the SIMs module and app. LG SIMs can also be used

with Single Zone one-to-one configurations such as the Single Zone Wall Mount systems.

• The Duct Free System air conditioning system

must run for at least 15–20 minutes before data

collected by SIMs 2.0 is valid for troubleshooting.

• You must have the free SIMs app correctly in-

stalled on your smart phone before using SIMs.

• Some ODUs have an LGMV extension cable ac-

cessed by removing the side handle cover. If the

ODU does not have this extension cable, access

the LGMV connector by removing the top cover

of the ODU.

High voltages capable of causing death are used in this equipment. Out-

door unit power remains connected during this procedure. Take extreme

caution not to touch electrical components or connections. Failure to

observe this warning can result in death or severe injury.

Figure 101: LG SIMs App and WLAN Module

Figure 102: SIMs WLAN Module to Typical DFS System

Figure 103: SIMs App Main Info Screen

The main screen is the first screen displayed after wireless connection is

established. Tap the Main Info tab to display current readings regarding

your indoor and outdoor unit(s). The Operational Info area of the screen

will show active functions or modes by illuminating the light to the right of

the function (Figure 103).

Additional Help information can be accessed by tapping the Help Menu

buttons at the bottom of this screen.

Operational

Information

AC Cycle

Information on

Main Info Tab

Help Menu

(File is Factory Use Only)

SIMs App Main Info Screen

Electrical Wiring

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ELECTRICAL WIRING

LG SIMS - Self Diagnosis Functions

SIMs App Screens

Outdoor Info/

Component Screen

Displays the following

information:

• Frequency

• FAN1 RPM

• FAN2 RPM

• DC Link

• Current

• Voltage

• EEV Mode

• Restart Timer

• Comp Mode

• EEV

Indoor Info Tab

Displays the following

information:

• Frequency

• Operation

• THM Mode

• REM Mode

• FAN

• EEV

• Air Temp

• Pipe-in

• Pipe-mid

• Pipe-out

Graph Info Tab

This tab, has three

sub sections:

• IDU - Indoor Unit

Temperature graph.

Displays IDU

information in graph

format. Information

displayed is for the

IDU # selected on

the Main screen.

• ODU - Outdoor Unit

Temperature and

Frequency graph.

Displays ODU

information in graph

format.

• ODU Electric -

Outdoor Unit Electric

data graph is

displayed.

Outdoor Info/

Temperature Screen

Displays the following

information:

• Inv TD

• Suction

• Discharge

• Cond Mid

• Cond Out

• Heatsink

• Air Temp

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TROUBLESHOOTING

Troubleshooting Using Error Codes

Refer to Table 32 and Table 33 for error codes that are generat-

ed from the indoor and outdoor units. These codes are the most

common that will manifest through these units. Your particular model

duct free system might generate additional codes not listed here.

Please contact LG Support if you see these types of errors and a

simple power down and boot up has not corrected the issue. You

should not attempt to fix the system yourself.

Error Codes

• Refer to the figures below for your particular indoor unit’s LED

configuration.

• Indicate different types of unit failures, assists in self-diagnosis and

to track the frequency of occurrence.

Error Codes

• Error codes are shown on the LEDs of indoor units, wired remote

controller, the Single Zone unit control board, and LG Monitoring

View (LGMV) Diagnostic Software.

• If two or more errors occur simultaneously, the lower error code

number is displayed rst.

• After error is resolved, the error code does not display.

Decoding the Error Display

The first and second number on the LED indicates error number.

Example: 21 = LED1 (Green light) 2x blink, LED2 (Red light) 1x blink

Error Code Nomenclature Definitions

• MICOM: Non-volatile memory chip where unit setup information is

stored.

• EPROM: Non-volatile memory chip where device identification,

size, and factory defined default component operating parameters

are stored.

Receiver

LED 1

(UNITS PLACE)

LED 2

(TENS PLACE)

LED 1

(UNITS PLACE)

LED 2

(TENS PLACE)

Receiver

Figure 104: IDU LS-HSV3 Models

Figure 105: IDU Some HSV Models

Figure 106: IDU LS-HV3/Some HSV Models

LED 2

(TENS PLACE)

Receiver

LED 1

(UNITS PLACE)

Error

Code

Description

No. of Times Indoor Unit

LEDs Blink

LED1

(Plasma LED)

LED2

(Power LED)

1 Indoor unit room temperature sensor error

1X -

2 Indoor unit inlet pipe sensor error 2X -

4 Float switch error (optional) 4X -

5 Communication error between indoor unit and outdoor units - 5X

6 Indoor unit outlet pipe sensor error 6X -

9 Indoor unit EEPROM error 9X -

10 Indoor unit BLDC motor fan lock - 1X

12 Indoor unit middle pipe sensor error 2X 1X

Table 32: Single Zone Wall Mounted Indoor Unit Error Codes

LED 1

(UNITS PLACE)

LED 2

(TENS PLACE)

Receiver

Figure 107: IDU LS-HEV Models

Troubleshooting

TROUBLESHOOTING

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Error Codes

Error

Code

Description

No. of Times Indoor Unit

LEDs Blink

LED1

(Plasma LED)

LED2

(Power LED)

21 DC Peak (IPM Fault); Compressor DC voltage was too high

2X 1X

22 Current Transformer2 (CT2) error; Alternating current (AC) input too high 2X 2X

23 DC Link Low Volt 2X 3X

25 AC Low/High Volt 2X 5X

26 DC Comp Position Error (not providing rotation), Locking 2X 6X

PSC Fault; Current to inverter compressor between AC and DC converter circuit

too high

2X 7X

28 Inverter compressor DC voltage is too high 2X 8X

29 Inverter compressor amperage is too high 2X 9X

31 Current-to-current transformer (CT) thermistor is too low 3X 1X

32 Inverter Compressor Discharge Pipe (D-Pipe) Overheat 3X 2X

40 CT Sensor Error; Thermistor is disconnected or shorted out 4X -

41 D-Pipe Sensor INV is disconnected or shorted out 4X 1X

44 Outdoor Air Sensor is disconnected or shorted out 4X 4X

45 Middle thermistor of outdoor unit condenser coil is disconnected or shorted out 4X 5X

46 Outdoor unit suction line thermistor is disconnected or shorted out 4X 6X

48 Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out 4X 8X

53 Communication failure from outdoor unit to indoor unit 5X 3X

60 Outdoor unit printed circuit board (PCB) EEPROM check sum error 6X -

61 Outdoor unit condenser coil temperature is too high 6X 1X

62 Outdoor unit inverter compressor PCB heat sink temperature is too high 6X 2X

63 Condenser coil pipe thermistor temperature is too low 6X 3X

65 Heat sink thermistor has disconnected or has shorted out 6X 5X

67 Outdoor brushless direct current (BLDC) fan motor lock error 6X 7X

Table 32: Single Zone Wall Mounted Indoor Unit Error Codes - Continued

Troubleshooting Using Error Codes - Continued

Refer to Service Manuals posted on www.lghvac.com for a full description of all error codes and work-arounds.

Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

TROUBLESHOOTING

Error Codes

Table 33: Single Zone Wall Mounted Outdoor Unit Error Codes

Error

Code

Description

No. of Times Outdoor Unit

LEDs Blink

LED1

(Plasma LED)

LED2

(Power LED)

21 DC Peak (IPM Fault); Compressor DC voltage was too high

2X 1X

22 Current Transformer2 (CT2) error; Alternating current (AC) input too high 2X 2X

23 DC Link Low Volt 2X 3X

25 AC Low/High Volt 2X 5X

26 DC Comp Position Error (not providing rotation), Locking 2X 6X

PSC Fault; Current to inverter compressor between AC and DC converter circuit

too high

2X 7X

28 Inverter compressor DC voltage is too high 2X 8X

29 Inverter compressor amperage is too high 2X 9X

31 Current-to-current transformer (CT) thermistor is too low 3X 1X

32 Inverter Compressor Discharge Pipe (D-Pipe) Overheat 3X 2X

40 CT Sensor Error; Thermistor is disconnected or is shorted out 4X -