LG LV181HV4 Manuale utente

SINGLE ZONE

VERTICAL AIR HANDLING UNIT

INSTALLATION MANUAL

Single-Zone Vertical Air

Handling Unit System

18,000 - 48,000 Btu/h LV420HV (42,000 Btu/h)

LV480HV (48,000 Btu/h)

LV181HV4 (18,000 Btu/h)

LV241HV4 (24,000 Btu/h)

LV361HV4 (36,000 Btu/h)

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.

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.

TABLE OF SYMBOLS

Do not install or remove the unit by yourself (end user).

Ask the dealer or an LG trained service provider to install the

unit.

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 LG

trained service provider.

There is risk of re, electric shock, explosion, and physical injury or

death.

The unit is shipped with refrigerant and the service valves

closed. Do not open service valves on the unit until all

non-condensibles have been removed from the piping sys-

tem and authorization to do so has been obtained from the

commissioning agent.

There is a risk of physical injury or death.

Do not operate the compressor with the service valves

closed.

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

Periodically check that the outdoor frame is not damaged.

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

Conrm all control box and panel covers are secure and

intact.

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

enter the unit, causing re, electric shock, and physical injury or death.

Always check for system refrigerant leaks after the unit has

been installed or serviced.

Exposure to high concentration levels of refrigerant gas may lead to

illness or death.

Wear protective gloves and safety goggles when handling

equipment. Sharp edges may cause personal injury.

Dispose the packing materials safely.

• Packing materials, such as nails and other metal or wooden parts,

may cause puncture wounds or other injuries.

• Tear apart and throw away plastic packaging bags so that children

may not play with them and risk suffocation and death.

Install the unit considering the potential for strong winds or

earthquakes.

Improper installation may cause the unit to fall over, resulting in physical

injury or death.

Do not change the settings of the protection devices.

If the pressure switch, thermal switch, or other protection device is

shorted and forced to operate improperly, or parts other than those

specied by LG are used, there is risk of re, electric shock, explosion,

and physical injury or death.

Do not install the unit on a defective stand.

There is a risk of physical injury.

INSTALLATION

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

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

This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

This symbol indicates situations that may result in equipment or property damage accidents only.

This symbol indicates an action that must not be completed.

DANGER

Single Zone Vertical Air Handling Unit Installation Manual

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

SAFETY INSTRUCTIONS

INSTALLATION - CONTINUED

Don’t install the unit where it’s directly exposed to ocean

winds.

Ocean winds may cause corrosion, particularly on the condenser and

evaporator 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 surface 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.

Keep the unit upright during installation to avoid vibration or

water leakage.

Do not install the unit in a noise sensitive area.

When connecting refrigerant tubing, remember to allow for

pipe expansion.

Improper piping may cause refrigerant leaks and system malfunction.

Take appropriate actions at the end of HVAC equipment life

to recover, recycle, reclaim or destroy R410A refrigerant

according to applicable U.S. Environmental Protection

Agency (EPA) rules.

Periodically check that the outdoor frame is not damaged.

There is a risk of equipment damage.

Install the unit in a safe location where nobody can step on or

fall onto it. Do not install the unit on a defective stand.

There is risk of unit and property damage.

Install the drain hose to ensure adequate drainage.

There is a risk of water leakage and property damage.

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

unit.

There is risk of product failure.

Always check for system refrigerant leaks after the unit has

been installed or serviced.

Low refrigerant levels may cause product failure

The unit is shipped with refrigerant and the service valves

closed. Do not open service valves on the unit until all

non-condensibles have been removed from the piping system

and authorization to do so has been obtained from the com-

missioning agent.

There is a risk of refrigerant contamination, refrigerant loss and equip-

ment damage.

Do not run the compressor with the service valves closed.

There is a risk of equipment damage.

Be very careful when transporting the product.

• Do not attempt to carry the product without assistance.

• Some products use polypropylene bands for packaging. Do not use polypropylene bands to lift the unit.

• Suspend the unit from the base at specified positions.

• Support the unit a minimum of four points to avoid slippage from rigging apparatus.

If the air conditioner is installed in a small space, take

measures to prevent the refrigerant concentration from

exceeding safety limits in the event of a refrigerant leak.

Consult the latest edition of ASHRAE (American Society of Heating,

Refrigerating, and Air Conditioning Engineers) Standard 15. If the

refrigerant leaks and safety limits are exceeded, it could result in person-

al injuries or death from oxygen depletion.

Install the unit in a safe location where nobody can step on or

fall onto it.

There is risk of physical injury or death.

Properly insulate all cold surfaces to prevent “sweating.”

Cold surfaces such as uninsulated piping can generate condensate

that could drip, causing a slippery surface that creates a risk of slipping,

falling, and personal injury.

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.

WIRING

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

performed 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

physical injury or death.

Single Zone Vertical Air Handling Unit Installation Manual

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

SAFETY INSTRUCTIONS

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.

Do not block the inlet or outlet.

Unit may malfunction.

Securely attach the electrical part cover to the indoor unit

and the service panel to the outdoor unit.

Non-secured covers can result in malfunction due to dust or water in the

service panel.

Periodically verify the equipment mounts have not

deteriorated.

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

or product failure.

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

There is risk of unit failure.

OPERATION

Do not provide power to or operate the unit if it is ood-

ed 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.

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

If the unit is mounted in an enclosed, low-lying, or poorly ventilated area,

and the system develops a refrigerant leak, it may cause re, electric

shock, explosion, physical injury, or death.

To avoid physical injury, use caution when cleaning or servicing the air conditioner.

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

There is risk of re, electric shock, physical injury or death.

Avoid excessive cooling and periodically perform ventilation

to the unit.

Inadequate ventilation is a health hazard.

Do not touch the refrigerant piping during or after

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 verify the equipment mounts have not

deteriorated.

If the base collapses, the unit could fall and cause physical injury or

death.

Periodically check power wiring for damage.

Power wiring must be replaced by the manufacturer, its service agent, or

similar qualied persons in order to avoid physical injury and/or electric

shock.

Do not open the inlet grille of the unit during operation.

Do not operate the unit with the panels or guards re-

moved. Do not insert hands or other objects through the

inlet or outlet when the unit has power applied to it. 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.

Securely attach the electrical part cover to the indoor unit

and the service panel to the outdoor unit.

Non-secured covers can result in burns or electric shock due to dust or

water in the service panel.

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

TABLE OF CONTENTS

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

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

Specications ..........................................................................................................................................9

Electrical................................................................................................................................................ 11

Location Selection .................................................................................................................................12

General Installation Guidelines..............................................................................................................14

Oceanside Applications .........................................................................................................................14

Required Outdoor Unit Clearances .......................................................................................................15

Required Indoor Unit Clearances ..........................................................................................................20

Horizontal Right Installation...................................................................................................................22

Vertical Downow Installation ................................................................................................................23

Installing Ductwork ................................................................................................................................26

Refrigerant Safety/Device Connection Limitations ................................................................................27

Selecting Field Supplied Piping.............................................................................................................28

Copper Expansion and Contraction....................................................................................................... 29

Piping Handling .....................................................................................................................................31

Refrigerant System Engineering............................................................................................................ 32

Flaring and Brazing Procedures............................................................................................................35

Refrigerant Piping Connections.............................................................................................................37

Installation Overview .............................................................................................................................37

Directional Pipe Formation ....................................................................................................................38

Outdoor Unit Connections .....................................................................................................................39

Indoor Unit Connections........................................................................................................................40

Drain Hose.............................................................................................................................................41

Bundling and Cutting Line ..................................................................................................................... 42

Electrical System Installation.................................................................................................................45

General Information and Safety Guidelines........................................................................................... 45

Power Wiring Specications and Best Practices...................................................................................46

Wall Controller Installation.....................................................................................................................49

External Static Pressure Setting Values ................................................................................................50

Indoor Unit Electrical Connections ........................................................................................................51

Outdoor Unit Electrical Connections...................................................................................................... 52

ndoor Unit Wiring Diagram LVN181HV4, LVN241HV4, LVN361HV4 54

Indoor Unit Wiring Diagram LVN420HV, LVN480HV ............................................................................. 55

Outdoor Unit Wiring Diagram LUU189HV ............................................................................................56

Outdoor Unit Wiring Diagram LUU249HV .............................................................................................57

Outdoor Unit Wiring Diagram LUU369HV ............................................................................................58

Outdoor Unit Wiring Diagram LUU428HV, LUU488HV .........................................................................59

NK/NJ Chassis Wiring Diagram Legend................................................................................................ 60

NJ/NK Chassis DIP Switch Settings......................................................................................................61

Final Installation Procedures .................................................................................................................62

Triple Leak / Pressure Check ................................................................................................................62

Triple Leak / Pressure and Evacuation Procedures ..............................................................................63

Triple Evacuation Procedure .................................................................................................................64

Trim Charge, Test Run...........................................................................................................................65

Pump Down, Cooling Only Mode ..........................................................................................................66

LG SIMS - Self Diagnosis Functions ....................................................................................................67

Error Codes ..........................................................................................................................................69

Refrigerant Leaks ..................................................................................................................................71

Installation Checklist...............................................................................................................................72

Single Zone Vertical Air Handling Unit Installation Manual

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

GENERAL DATA

Unit Nomenclature

V181 H

System Type:

Style:

SV = High Efficiency Inverter

VP = Gallery

YV = Premier

EV = Mega

V = Standard Inverter

T = Thermostat Compatible

Nominal Capacity

(Nominal cooling capacity in Btu/h):

Frame Type:

A: Art Cool™

S: Standard

C: Four-Way Ceiling-Cassette

D: Ceiling-Concealed Duct (Low Static)

H: Ceiling-Concealed Duct (High Static)

V: Vertical-Horizontal Air Handling

L = LG

18 = 18,000

24 = 24,000

36 = 36,000

42 = 42,000

48 = 48,000

L V 4N

N: Indoor Unit

U: Outdoor Unit

No N or U: System

H = Heat Pump

Generation:

Indoor Units and Outdoor Units

Product Data

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

GENERAL DATA

Specications

Table 1: Vertical Air Handling Unit General Data.

Type Vertical Air Handling Unit

System Model

(Indoor Unit / Outdoor Unit)

LV181HV4

(LVN181HV4/

LUU189HV)

LV241HV4

(LVN241HV4/

LUU249HV)

LV361HV4

(LVN361HV4/

LUU369HV)

LV420HV

(LVN420HV/

LUU428HV)

LV480HV

(LVN480HV/

LUU488HV)

Cooling Capacity (Min/Rated/Max)

(Btu/h)

7,200 ~ 18,000 ~

24,000

9,600 ~ 24,000 ~

30,000

14,400 ~ 36,000 ~

39,000

17,000 ~ 42,000 ~

48,000

18,000 ~ 48,000 ~

53,000

Cooling Power Input1(kW) 0.45 ~ 1.35 ~ 3.25 0.58 ~ 2.00 ~3.26 1.00 ~ 3.27 ~ 3.60 1.35 ~ 3.80 ~ 5.30 1.40 ~ 4.80 ~ 6.00

EER 13.30 12.0 11.0 11.05 10.00

SEER 19.2 19.5 18.0 17.0 16.5

Heating Capacity

(Min / Rated / Max) (Btu/h)

8,000 ~ 20,000 ~

24,000

10,800 ~ 27,000 ~

30,000

16,000 ~ 40,000 ~

43,000

18,000 ~ 47,000 ~

55,000

19,000 ~ 56,000 ~

60,000

Heating Power Input1(kW) 0.50 ~ 1.73 ~ 2.37 0.65 ~ 2.25 ~ 3.04 1.02 ~ 3.57 ~4.40 1.45 ~ 4.00 ~ 5.65 1.50 ~ 5.10 ~ 6.20

COP 3.40 3.52 3.28 3.44 3.22

HSPF 10.4 11.0 10.0 10.0 9.5

Maximum Heating Capacity (Btu/h)

Outdoor 17°F (DB) / Indoor 70°F (DB) 21,000 26,000 37,350 37,000 40,000

Outdoor 5°F (DB) / Indoor 70°F (DB) 20,500 23,600 35,000 32,000 34,000

Power Input [W] @ Outdoor 5°F (WB) 3,100 3,290 5,620 4,800 5,250

Outdoor -4 °F(DB) / Indoor 70°F (DB) 19,910 20,760 32,220 24,000 26,000

Power Supply V, Ø, Hz 208-230 / 1 / 60

Outdoor Unit Operating Range

Cooling (°F DB) 5 to 118

Optional Wind Bafe Cooling (°F DB) Yes (-4)

Heating (°F WB) -4 to 64

Indoor Unit Operating Range

Cooling (°F WB) 57 to 77

Heating (°F DB) 59 to 81

Indoor Temperature Setting Range

Cooling (°F DB) 65 to 86

Heating (°F WB) 61 to 86

EEV: Electronic Expansion Valve, IDU: Indoor Unit, ODU: Outdoor Unit. This unit comes

with a dry helium charge.

This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0

ft level difference between outdoor and indoor units.

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).

1 Power Input is rated at high speed. Cooling range can be extended from 5°F down to

-4°F using the Low Ambient Wind Baffle Kit (sold separately).

2 All communication / connection (power) cable from the outdoor unit to the indoor unit

are field supplied and is to be a minimum four-conductor, 14 AWG, stranded, shielded or

unshielded (if shielded, it must be grounded to the chassis of ODU only), and must comply

with applicable local and national codes.

3 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.

4 Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745 and

are the same in both cooling and heating mode. These values can increase due to ambient

conditions during operation.

5 Piping lengths are equivalent.

Single Zone Vertical Air Handling Unit Installation Manual

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

GENERAL DATA

Table 2: Vertical Air Handling Unit General Data, continued.

Type Vertical Air Handling Unit

System (Model) (Indoor Unit / Outdoor Unit) LV181HV4

(LVN181HV4/

LUU189HV)

LV241HV4

(LVN241HV4/

LUU249HV)

LV361HV4

(LVN361HV4/

LUU369HV)

LV420HV

(LVN420HV/

LUU428HV)

LV480HV

(LVN480HV/

LUU488HV)

Unit Data

Refrigerant Type3R410A

Additional Refrigerant Charge (oz./ft.) 0.43

Refrigerant Control EEV

Indoor Unit Sound Pressure Level (dB(A))

(H/M/L)435 / 33 / 30 36 / 34 / 30 44 / 41 / 39 48 / 45 / 44 49 / 48 / 44

Outdoor Unit Sound Pressure Level (dB(A))

(Cool/Heat)448 / 52 48 / 52 52 / 54 52 / 54 52 / 54

Indoor Unit Net / Shipping Weight (lbs.) 123.5 / 135.1 123.5 / 135.1 129 / 140 165 / 188 165 / 188

Outdoor Unit Net / Shipping Weight (lbs.) 129 / 141 130.0 / 143.3 198.9 / 223.1 203 / 232 203 / 232

Power Wiring / Communications Cable (No.

x AWG)24 x 14

Power Supply (No. x AWG) 3 x 12 3 x 12 3 x 10 3 x 10 3 x 10

Compressor (Type x Qty.) Twin Rotary x 1 Twin Rotary x 1 Scroll x 1 Twin Rotary x 1 Twin Rotary x 1

Dehumidication Rate (pts./hr.) 3.1 4.0 5.1 4.3 5.2

Fan

Indoor Unit Type x Qty. Sirocco

Outdoor Unit Type x Qty. Propeller x 1 Propeller x 1 Propeller x 2 Propeller x 2 Propeller x 2

Motor / Drive ECM (Electronically Commutated Motor) Brushless Digitally Controller / Direct

Airflow Rate

Indoor Unit (H / M / L [CFM]) 640 / 580 / 480 710 / 640 / 480 990 / 880 / 800 1,260 / 1,100 / 1,000 1,400 / 1,260 / 1,000

Outdoor Unit (CFM) 2,048 2,048 1,942 x 2 1,942 x 2 1,942 x 2

Factory Set (High) External Static

Pressure (in.wg) Constant CFM @ 0.1” ~ 1.0” ESP 0.3 0.3

Piping

Liquid (in.) 3/8

Vapor (in.) 5/8

Indoor Unit Condensate Drain O.D. / I.D.

(in.)

Primary &

Secondary: 3/4 FPT

Minimum / Maximum Pipe Length (ft.)56.6 / 164 6.6 / 164 6.6 / 246 6.6 / 246 6.6 / 246

Piping Length (no additional refrigerant, ft.) 24.6

Maximum Elevation Difference (ft.) 98.4

EEV: Electronic Expansion Valve, IDU: Indoor Unit, ODU: Outdoor Unit. This unit comes with a

dry helium charge.

This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft

level difference between outdoor and indoor units.

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).

1 Power Input is rated at high speed. Cooling range can be extended from 5°F down to -4°F

using the Low Ambient Wind Baffle Kit (sold separately)

2 All communication / connection (power) cable from the outdoor unit to the indoor unit

are field supplied and is to be a minimum four-conductor, 14 AWG, stranded, shielded or

unshielded (if shielded, it must be grounded to the chassis of ODU only), and must comply

with applicable local and national codes.

3 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.

4 Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745 and

are the same in both cooling and heating mode. These values can increase due to ambient

conditions during operation.

5 Piping lengths are equivalent.

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