LG AK-W240BC00, AK-W180BC00 INSTALLATION MANUAL

INSTALLATION MANUAL

SINGLE PACKAGE TYPE AIR CONDITIONER

AIR
CONDITIONER

Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it
thoroughly.

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Copyright © 2019 - 2021 LG Electronics Inc. All Rights Reserved.

MFL67445822

Rev.08_021021

ENGLISH

ESPAÑOL

PORTUGUÊS

TIPS FOR SAVING ENERGY

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TIPS FOR SAVING ENERGY

Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:

• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

SAFETY INSTRUCTIONS

3

SAFETY INSTRUCTIONS

The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or
incorrect operation of the appliance.

The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

This symbol is displayed to indicate matters and operations that can cause risk.

!

Read the part with this symbol carefully and follow the instructions in order to avoid risk.

WARNING

!

This indicates that the failure to follow the instructions can cause serious injury or death.

CAUTION

!

This indicates that the failure to follow the instructions can cause the minor injury or damage to
the product.

WARNING

!

• Installation or repairs made by unqualified persons can result in hazards to you and others.

• Installation shall be in accordance with national standards of electrical appliances.

• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and 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 and/or death.

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Installation

• Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

- There is risk of fire or electric shock.

• For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.

- Do not disassemble or repair the product. There is risk of fire or electric shock.

• Always ground the product.

- There is risk of fire or electric shock.

• Install the panel and the cover of control box securely.

- There is risk of fire or electric shock.

• Always install a dedicated circuit and circuit breaker.

- Improper wiring or installation may cause fire or electric shock

• Use the correctly rated circuit breaker or fuse.

- There is risk of fire or electric shock.

• Use the specified wires to connect the unit.

- There is risk of fire or electric shock.

• Do not install, remove, or re-install the unit by yourself (customer).

- There is risk of fire, electric shock, explosion, or injury.

• Be cautious when unpacking and installing the product.

- Sharp edges could cause injury. Be especially careful of the case edges and the fins on the

condenser and evaporator.

• For installation, always contact the dealer or an Authorized Service Center.

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• Do not install the product on a defective installation stand.

• Be sure the installation area does not deteriorate with age.

• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress

• When using Thermostat, be sure to use double insulated thermostat.

• Do not install the unit in potentially explosive atmospheres.

• Pipes and wires should be purchased separately for installation of the product.

Operation

• Take care to ensure that power cable could not be pulled out or damaged during operation.

• Do not place anything on the power cable.

• Do not touch(operate) the product with wet hands.

• Do not place a heater or other appliances near the power cable.

• Do not allow water to run into electric parts.

• Do not store or use flammable gas or combustibles near the product.

• Do not use the product in a tightly closed space for a long time.

• When flammable gas leaks, turn off the gas and open a window for ventilation before turn the

• If strange sounds, smell or smoke comes from product. Turn the circuit breaker off or disconnect

• Stop operation and close the window in storm or hurricane. If possible, remove the product from the

• Do not open the panel of product during operation. (If the unit has the electrostatic filter, Do not

• When the product is soaked (flooded or submerged), contact an Authorized Service Center.

• Be cautious that water could not enter the product.

• Ventilate the product from time to time when operating it together with a stove, etc.

• Turn the main power off when cleaning or maintaining the product.

• When the product is not be used for a long time, turn off the circuit breaker.

SAFETY INSTRUCTIONS

- It may cause injury, accident, or damage to the product.

- If the base collapses, the air conditioner could fall with it, causing property damage, product failure,
and personal injury.

air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion.

- There is the risk of death, injury, fire or explosion.

- There is risk of fire or electric shock.

- There is risk of fire or electric shock.

- There is risk of fire or electrical shock.

- There is risk of fire and electric shock.

- It may cause failure of the product or electric shock.

- There is risk of fire or failure of product.

- Oxygen deficiency could occur.

product on.

- Do not use the telephone or turn switches on or off. There is risk of explosion or fire

the power supply cable.

- There is risk of electric shock or fire.

window before the hurricane arrives.

- There is risk of property damage, failure of product, or electric shock.

touch it.)

- There is risk of physical injury, electric shock, or product failure.

- There is risk of fire or electric shock.

- There is risk of fire, electric shock, or product damage.

- There is risk of fire or electric shock.

- There is risk of electric shock.

- There is risk of product damage or failure, or unintended operation.

SAFETY INSTRUCTIONS

• Take care to ensure that nobody could step on or fall onto the unit.

- This could result in personal injury and product damage.

CAUTION

!

Installation

• Always check for gas (refrigerant) pressure after installation or repair of product.

- Low refrigerant levels may cause failure of product.

• Install the drain hose to ensure that water is drained away properly.

- A bad connection may cause water leakage.

• Keep level even when installing the product.

- To avoid vibration or water leakage.

• Do not install the product where the noise or hot air from the outdoor unit could damage the
neighborhoods.

- It may cause a problem for your neighbors.

• Don't use people to lift and transport the product.

- Avoid personal injury.

• Do not install the product where it will be exposed to sea wind (salt spray) directly.

- It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator

fins, could cause product malfunction or inefficient operation.

• Do not let the air conditioner run for a long time when the humidity is very high and a door or a
window is left open.

- Moisture may condense and wet or damage furniture.

Operation

• Do not expose the skin directly to cool air for long periods of time. (Don't sit in the draft.)

- This could harm to your health.

• Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a
consumer air conditioner, not a precision refrigeration system.

- There is risk of damage or loss of property.

• Turn on the power at least 6 hours before starting operation.

- Starting operation immediately after turning on the main power switch can result in severe damage

to internal parts. Keep the power switch turned on during the operational season.

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TABLE OF CONTENTS

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TABLE OF CONTENTS

2 TIPS FOR SAVING ENERGY
3 SAFETY INSTRUCTIONS
7 INTRODUCTION (7.5, 10RT)
8 INTRODUCTION (12.5, 15RT)
9 INTRODUCTION (20, 25RT)
10 DIMENSIONAL DATA (7.5, 10RT)
11 DIMENSIONAL DATA (12.5, 15RT)
12 DIMENSIONAL DATA (20, 25RT)
13 INSTALLATION OF UNIT

13 Inspection
13 Location and Recommendations

14 Ductwork

14 Change Airflow
15 Condensate Drain Piping
15 2 Inch filter installation guide
16 2 Inch filter removal guide
17 Installation of Remote Controller(Accessory)
21 Electronic Wiring
22 Field Wiring
26 Connect the cable to the Product
30 DIP Switch Setting in Indoor Main PCB
30 Group Control

31 INSTALLER SETTING

31 How to enter installer setting
32 ESP setting
33 Test run setting
34 Self-Diagnosis Function
39 Starting the Unit
40 Final Installation Checklist and Maintenance
42 Installation guide at the seaside

t

INTRODUCTION (7.5, 10RT)

Features

Front View

Air outlet

vents

Supply Air

INTRODUCTION (7.5, 10RT)

7

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Rear View

Control
access panel

Drain Hole

Motor Access Panel

Compressor Access panel

Return Air

Air outle
vents

INTRODUCTION (12.5, 15RT)

t

8

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INTRODUCTION (12.5, 15RT)

Features

Front View

Air outlet

vents

Rear View

Compressor
Access panel

Drain Hole

Motor Access Panel

Supply Air

Control
access panel

Return Air

Air outle
vents

INTRODUCTION (20, 25RT)

Features

Front View

Air outlet

vents

INTRODUCTION (20, 25RT)

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Rear View

Compressor
Access panel

Drain Hole

Motor Access Panel

Supply Air

Control
access panel

Return Air

Air outlet
vents

Air intake
vents

DIMENSIONAL DATA (7.5, 10RT)

More than

1 160(45-11/16)

More than
860(33-7/8)

More than 860(33-7/8)

More than 1 160(45-11/16)

HGF

E

A

B

C

D

Drain Hole

Drain Hole

GE

D

C

B

A

RETURNRETURN

SUPPLYSUPPLY

RETURN

SUPPLY

B

C

D

A

More than 1 160(45-11/16)

More than

860(33-7/8)

More than 1 160(45-11/16)

More than

860(33-7/8)

Drain HoleDrain HoleDrain Hole

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DIMENSIONAL DATA (7.5, 10RT)

Single packaged Units are designed for outdoor mounting with vertical condenser discharge.
They can be located either at ground level or on roof.

Each unit contains an operating charge of Refrigerant as shipped.

Product Dimensions (Figure 1A)

RT 7.5, 10

A 1 227 (48-5/16)
B 1 109 (43-21/32)
C 2 250 (88-19/32)

D 600 (23-5/8)

Horizontal Flow Application
(Figure 1B)

RT 7.5, 10

A 452 (17-25/32)

B 419 (16-1/2)

C 312 (12-9/32)

D 77 (3-1/32)

E 156 (6-5/32)

F 865 (34-1/16)

G 384 (15-1/8)

H 582 (22-29/32)

Down Flow Application (Figure 1C)

RT 7.5, 10

A 450 (17-23/32)

B 413 (16-1/4)

C 310 (12-7/32)

D 104 (4-3/32)

E 64 (2-17/32)

F 581 (22-7/8)

G 862 (33-15/16)

[Unit : mm (inch)]

[Unit : mm (inch)]

[Unit : mm (inch)]

Figure 1A [Unit : mm (inch)]

Figure 1B [Unit : mm (inch)]

Figure 1C [Unit : mm (inch)]

DIMENSIONAL DATA (12.5, 15RT)

More than

1 160(45-11/16)

More than 860(33-7/8)

More than 860(33-7/8)

More than 1 160(45-11/16)

F

E

H

G

A

B

C

D

Drain Hole

SUPPLY

FE

D

C

B

A

HG

Drain Hole

RETURNRETURNRETURN

More than 1 160(45-11/16)

More than 1 160(45-11/16)

More than 860(33-7/8)

More than 860(33-7/8)

A

B

C

D

Drain HoleDrain HoleDrain Hole

DIMENSIONAL DATA (12.5, 15RT)

Single packaged Units are designed for outdoor mounting with vertical condenser discharge.
They can be located either at ground level or on roof.

Each unit contains an operating charge of Refrigerant as shipped.

Product Dimensions (Figure 1A)

[Unit : mm (inch)]

RT 12.5, 15

A 1 234 (48-19/32)
B 2 230 (87-25/32)
C 2 400 (94-1/2)

D 662 (26-1/16)

Horizontal Flow Application
(Figure 1B)

RT 12.5, 15

A 387 (15-1/4)

B 673 (26-1/2)

C 350 (13-25/32)

D 96 (3-25/32)

E 167 (6-9/16)

F 970 (38-3/16)

G 286 (11-1/4)

H 749 (29-1/2)

[Unit : mm (inch)]

Figure 1A [Unit : mm (inch)]

Figure 1B [Unit : mm (inch)]

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Down Flow Application (Figure 1C)

RT 12.5, 15

A 388 (15-9/32)

B 657 (25-7/8)

C 350 (13-25/32)

D 21 (4-3/4)

E 133 (5-1/4)

F 970 (38-3/16)

G 74 (2-29/32)

H 750 (29-17/32)

[Unit : mm (inch)]

Figure 1C [Unit : mm (inch)]

DIMENSIONAL DATA (20, 25RT)

More than

1 160(45-11/16)

More than

860(33-7/8)

More than 860(33-7/8)

More than 1 160(45-11/16)

E

F

G

C

A

B

D

H

B

H

G

H

C

D

RETURNRETURN

SUPPLYSUPPLY

RETURN

SUPPLY

A

FE

Drain Hole

More than 1 160(45-11/16)

More than 1 160(45-11/16)

More than 860(33-7/8)

More than 860(33-7/8)

B

C

D

A

12

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DIMENSIONAL DATA (20, 25RT)

Single packaged Units are designed for outdoor mounting with vertical condenser discharge.
They can be located either at ground level or on roof.

Each unit contains an operating charge of Refrigerant as shipped.

Product Dimensions (Figure 1A)

[Unit : mm (inch)]

RT 20, 25

A 1 242(48-29/32)
B 2 230(87-25/32)
C 3 520(138-19/32)

D 2 673(105-6/25)

Horizontal Flow Application
(Figure 1B)

RT 20, 25

A 460(18-1/8)

B 684 (26-7/8)

C 506(19-15/16)

D 173 (6-3/4)

E 142(5-5/8)

F 1 033(40-11/16)

G 213(8-7/16)

H 899(35-7/16)

Down Flow Application (Figure 1C)

RT 20, 25

A 460(18-1/8)

B 724(28-9/16)

C 506(19-15/16)

D 142(5-10/16)

E 110(4-3/8)

F 1 033(40-11/16)

G 97(3-7/8)

H 899(35-7/16)

[Unit : mm (inch)]

Figure 1A [Unit : mm (inch)]

Figure 1B [Unit : mm (inch)]

[Unit : mm (inch)]

Figure 1C [Unit : mm (inch)]

INSTALLATION OF UNIT

INSTALLATION OF UNIT

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Inspection

1 Check for damage after unit is unloaded.

Report promptly, to the carrier, any
damage found to unit. Do not drop unit.

2 Check the unit nameplate to determine if

the unit voltage is correct for the
application. Determine if adequate
electrical power is available. Refer to the
application specifications.

3 Check to be sure the refrigerant charge

has been retained during shipment.
Access to 1/4" flare pressure taps may be
gained by removing compressor
compartment access panel.

Location and Recommendations

Unit Support

If unit is to be roof mounted check building
codes for weight distribution requirements.

Location and Clearances

Installation of unit should conform to local
building codes and the National Electrical Code.
Select a location that will permit unobstructed
airflow into the condenser coil and away from
the fan discharge and permit unobstructed
service access into the compressor
compartment. Suggested airflow clearances and
service clearances are given in Figure 1.

Placing and Rigging

Rig the unit using either belt or cable slings.
The sling eyelet must be placed through the
lifting holes in the base rail of the unit. The
point where the slings meet the lifting eyelet
should be at least 1.8 m above the unit. Use
spreader bars to prevent excessive pressure
on the top of the unit during lifting.

Lifting Beam

Cable or Chain

Clevis

Recommended

Rigging Method

Holes in Base

Rail

Spreader

Bar

Figure 2

Roof Mounted Unit

On new roofs, the curb should be welded
directly to the roof deck. For existing
construction, nailers must be installed under
the curb if welding is not possible. Be sure
attach the down flow ductwork to the curb
before setting unit in place.

When installing the unit, it must be level to
insure proper condensate flow from the unit
drain pan.

Slab Mount

For ground level installation, the unit base
should be adequately supported and hold the
unit near level. The installation must meet the
guidelines set forth in local codes.

NOTE

• The use of "spreader bars" is required
when hoisting the unit (prevents
damage to sides and top). Top crating
can be used as spreader bars.