LG JBNQ18GB2A1 Owner’s Manual

AIR

CONDITIONER

Please read this manual carefully before operating
your set and retain it for future reference.

TYPE : LO-STATIC CEILING DUCT TYPE AIR CONDITIONER

For Single LO-Static duct models

MFL62760204

P/No. : MFL62760204_v1

CUSTOMER CARE

1800-180-3575 (Toll Free)

CALL

Regd. Office : LG Electronics India Pvt. Ltd., A Wing (3rd Floor), D-3, District Center, Saket, New Delhi - 110017

12 x 7

(9:00 AM – 9:00 PM)

www.lg.com/in/support

CLICK

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To know more about LG, visit www.lg.com
For Corporate/Instutional enquiries,
please write to [e-mail]

Low Static Hide Away Type Air Conditioner Owner's Manual

TABLE OF CONTENTS

F or Your Records

Write the model and serial numbers here:

Page no.

1. Safety Precautions

2. Operating Instructions

3. Care and Maintenance

4.

Before you call for service

14

19

Model #

Serial #

3

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

5

Dealer's Name

Date Purchased

R

ead This Manual

Inside you will find many helpful hints on how to use

and maintain your air conditioner properly. Just a little

preventive care on your part can save you a great

deal of time and money over the life of your air

conditioner.

You'll find many answers to common problems in the

chart of troubleshooting tips. If you review our chart of

Troubleshooting Tips first, you may not need to call

for service at all.

CAUTION

• Contact the authorized service technician for repair
or maintenance of this unit.

• Contact the installer for installation of this unit.

• The air conditioner is not intended for use by young
children or invalids without supervision.

• Young children should be supervised to ensure that
they do not play with the air conditioner.

• When the power cord is to be replaced, replacement
work shall be performed by authorized personnel
only.

• Installation work must be performed in accordance
with the nati onal wiring standard s by au thorized
personnel only.

2

Safety
Precautions

To prevent injury and property damage, follow these instructions.

Incorrect operation due to ignoring instructions will cause harm or damage, the seriousness of which is
indicated by the following symbols.

Precautions

WARNING

CAUTION

This symbol shows the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to property.

Never Do This

Always Do This

Installation precautions

WARNING

WARNING

n

Do not install, remove and reinstall the unit by yourself.

• Improper installation will cause water leakage, electrical shock, or fire. Please consult
authorized dealer or specialist for the installation work. Please note fault caused by improper
installation is not covered by warranty.

• Unit must be installed in an easily accessible area. Any additional cost required to hire a
special equipment to service the unit will be the responsibility of the customer.

WARNING

WARNING

Do not damage or use an
unspecified power cord.

•

It will cause electrical shock or fire.

• If the supply cord is damaged, it must be
replaced by the manufacturer or its
service agent or a similarly qualified
person in order to avoid a hazard.

Do not operate or stop the
unit by inserting or pulling
out the power plug.

• It will cause electrical shock or
fire due to heat generation.

When an abnormality (smell of burning, etc)
occurs, stop the air conditioner, and
turn off the breaker.

• If the unit continues to be operated in an abnormal
condition, it may cause a fire, trouble, etc. In this
case, consult your dealer.

Do not operate switches
with wet hands.

• It may cause electrical shock.

Do not insert your finger or
stick, etc. into the air inlet/air
outlet.

• Since the fan rotates at high
speed, this may cause an injury
or damage the unit.

Repair or relocation should not be done by the
customer.

• If this is done in correctly, it may cause a fire,
electric shock, injury by dropping of the unit, water
leakage, etc. Consult your dealer.

Plug in the power plug
properly.

• Otherwise, it will cause
electrical shock or fire due to
heat generation.

Do not expose the skin to
cool air directly for a long
time.

• This could damage your health.

3

CAUTION

CAUTION

• Contact the authorized Service technician for repair or maintenance of this unit.

• Contact the installer for installation of this unit.

• The air conditioner is not intended for use by young children or infirm persons without
supervision.

• Young children should be supervised to ensure that they do not play with the air conditioner.

CAUTION

CAUTION

Do not clean the air
conditioner with water.

l Water may enter the unit and

degrade the insulation. It may
cause an electric shock.

Ventilate well when used
together with a stove, etc.

l An oxygen shortage may occur.

When the unit is to be
cleaned, switch off, and turn
off the breaker.

l Since the fan rotates at high

speed during operation, it may
cause an injury.

Do not put a stove, etc.
where is exposed to direct
air flow.

l It may cause imperfect

combustion.

Do not operate for a long
time in high humidity, e.g.
leaving a door or window
open.

l In the cooling mode, if it is

operated in a room with high
humidity (80%r.h. or more) for a
long time, water condensed in
the air conditioner may drop and
may wet and spoil furniture, etc.

If the supply cord is damaged, it
must be replaced by a special cord
or assembly available from the
manufacturer of its service agent.

l If will cause electrical shock or

fire.

Do not touch or pull the lead
wire with wet hands.

lIt will cause product breakdown

or electric shock.

When the unit is not going to
be used for a long time, turn
off the breaker.

l It may cause an injury.

Do not step onto an unstable
bench when
attaching/detaching the
panel.

l It may case an injury, etc. by

falling down.

When the air filter is to be
removed, do not touch the
metal parts of the indoor unit.

l It may cause an injury.

Do not step on the outdoor
unit and do not put anything
on it.

l It may cause an injury through

dropping or falling down.

Do not use for special
purposes.

l Do not use this air conditioner to

preserve precision devices, food,
animal, plants and art objects.
It may cause deterioration of
quality, etc.

Do not press the screen
using powerful pressure
or select two buttons.

lIt will cause product breakdown

or malfunction.

4

2. Operating Instructions

A) Indoor Unit, Outdoor Unit

Wired Remote

Controller (Optional)

Wireless Remote Receiver & Controller

(Standard)

Operation of Indication Lamps

1 Emergency Operation button :Turns the indoor unit on or off even when

remote control is not working.

2 Signal Detector : Receives the signal from remote control
3 Timer lamp (Green) : Lights up during the timer operation.
4 Hotstart lamp (Orange) : Available only for the heat pump models, not

cooling only models.

5 System On/Off lamp (Red) : Lights up during system controller operation.
6 Filter Sign lamp (Green) : Lights up after 2,400 hours from the time of

first power on operation.

After installing the product, you must run a Test Run mode. Press
the Emergency Operation button for 5 seconds, until the LED
flickers. Then the indoor unit, duct runs cooling mode for 18
minutes, where the d esir ed tem pera ture i s 18 °C and the
Wind strength is high.

5

Outdoor Unit

Air Intake

(side, rear)

Air Outlet

Vents

Cooling model: Low static Type Air Conditioner for cooling

B) Remote Control Preparation

Connecting Wire
Power Wire

Connection Tube

6

C) Remote Control Operations

*

*

*

*

*

* Function not applicable for Lo-Static Duct Model.

7

INDOOR FAN SPEED SELECTION Button
Used to select fan speed in three steps low,
medium and high.

Cooling Mode

8

Auto Operation Mode

9

Dehumidification Mode

10

Fan Mode

Set the fan speed again. You can select the
fan speed in three steps – low, medium and high.
Each time the button is pressed, the fan
speed mode is shifted.

11

Temperature Setting/Room Temperature Checking

12

Timer

13

Care and
maintenance

Caution: Before performing any maintenance, turn off the main power to the system.

Care and maintenance

Indoor Unit

Never use any of the followings:

Grille, Case, and Remote Control

q Turn the system off before cleaning. To clean,

wipe with a soft, dry cloth. Do not use bleach or
abrasives.

Note:

Supply power must be disconnected before
cleaning the indoor unit.

Air Filter

The air filters behind Indoor unit
(the suction side) should be checked and cleaned
once every 2 weeks or more often if necessary.

q

• Water hotter than 40°C
Could cause deformation and/or
discoloration.

• Volatile substances
Could damage the surfaces
of the air conditioner.

Clean the filter with a vacuum or warm, soapy

1

water.

• If very dirty, wash with a solution of
detergent in lukewarm water.

• If hot water (50°C or more) is used, filter
may be deformed.

After washing with water, dry well in the shade.

2

S

I

N

N

E

R

S

C

O

G

U

N

I

R

B

e

n

e

z

n

e

C

L

B

A

R

E

R

G

Indoor Unit Dimensions (mm)

Dimension

Capacity(Btu/h)

18/24/ Btu/h

A B C D E F G H I J

1130 1180 383 575 93 190 21 1065 163 1100

(Unit:mm)

Re-install the air filter.

3

Drainage hole

14

B
A
J

D

CE

G

I

F

H

Drain Pump use

Outdoor Unit

The heat exchanger coils and panel vents of the
outdoor unit should be checked regularly. If clogged
with dirt or soot, the heat exchanger and panel vents
may be professionally steam cleaned.

Note:

Dirty or clogged coils will reduce the operating
efficiency of the system and cause higher
operating costs.

Outdoor Unit

Outdoor Unit

H

D

(Side)

Air intake

vents

Air outlet

vents

L1

(Rear)

W

Control Cover

Connecting Wir

Connection Pip

L2

e

e

Indoor Unit

D

Model Capacity Indoor dimension Outdoor Dimension

JB-Q18GB2A0

JB-Q24GB2A0
JB-Q18GB2A1

1.5TR

2.0TR

1.5TR

W D H W D H L1 L2
1180 575 190 800 260 555 590 305
1180 575 190 800 260 555 590 305

1180

575

W

190 770 288

H

545 560 330

15

When the air conditioner is not going to be used for a long time.

When it is not going to be used for

Operate the air conditioner on Air circulation

1

mode (Refer to page 15) for 2 to 3 hours.

• This will dry out the internal parts.

Turn off the circuit breaker.

2

Turn off the circuit breaker when the air conditioner
is not going to be used for a long time.

Dirt may collect and may cause a fire.

a long time.

CAUTION

CAUTION

Operation Tips

Do not overcool the room.

This is not good for the health
and wastes electricity.

Keep blinds or curtains

closed.

Do not let direct sunshine
enter the room when the air
conditioner is in operation.

When the air conditioner is to

be used again.

n Check that the air inlet and outlet of the

indoor/outdoor unit are not blocked.

Helpful information

The air filters and your electiric bill.
If the air filters become clogged with dust, the
cooling capacity will drop, and 6% of the
electricity used to operate the air conditioner will
be wasted.

Make sure that the doors

and windows are shut tight.

Avoid opening doors and
windows as much as possible
to keep the cool air in the
room.

Clean the air filter regularly.

Blockages in the air filter
reduce the airflow and lower
cooling and dehumidifying
effects. Clean at least once
every two weeks.

Ventilate the room

occasionally.

Since windows are kept
closed, it is a good idea to
open them and ventilate the
room now and then.

16

Self-diagnosis Function

17

Error Diagnosis

Sr.

ERROR CODE DIAGNOSIS

No.

1

CH-01

2

CH-02

3

CH-03

4

CH-04

5

CH-05

Check room thermistor

Check pipe thermistor (CN-Pipe/In)

Check Wired Remote Connection
with PCB

Check float sensor / Jumper

Check DIP Switch Comm (Yes/No)

DESCRIPTION

Recover after 5 seconds of operation when respective
thermistor healthy

Recover after 3 seconds of operation when respective
thermistor healthy

Check wired remote cable for cut/loose contact.

Recover after 4 minutes of operation when float sensor /
Jumper healthy

Check DIP Switch setting and Power Reset.

6

CH-06

7

CH-09

8

CH-10

Check pipe thermistor (CB-Pipe/Out)

Check Option PCB (EPROM)

Check for BLDC Motor Fan Lock

Recover after 3 seconds of operation when respective
thermistor healthy.

Check Interconnection of Option PCB and Power Reset

BLDC Motor not operation.

18

Troubleshooting
Tips

Before you call for service...

Troubleshooting Tips! Save time and money!

Check the following points before requesting repairs or service.... If the malfunction persist, please contact your

dealer.

Case Explanation

l

The air conditioner does not
operate.

The room has a peculiar odor.

It seems that condensate is
leaking from the air Conditioner.

Air conditioner does not operate
for about 3 minutes when restart.

Does not cool or heat effectively.

The air conditioner operation is
noisy.

Crack sound is heard.

Remote control display is faint, or
no display at all.

Have you made a mistake in timer operation?

l

On first starting, the indoor unit operates in

fifteen seconds.

l

Has the fuse blown or has the circuit breaker

been tripped?

l

Check power supply for single/reverse phase,
voltage imbalance.

l

Check that this is not a damp smell exuded by

the walls, carpet, furniture or cloth items in the
room.

l

Condensation occurs when the airflow from the

air conditioner cools the warm room air.

l

This is the protector of the mechanism.

l

Wait about three minutes and operation will

begin.

l

Is the air filter dirty? See air filter cleaning

instructions.

l

The room may have been very hot when the

room air conditioner was first turned on. Allow
time for it to cool down.

l

Has the setting temperature been set

incorrectly?

l

Are the indoor unit's air inlet or outlet vents

obstructed?

l

For a noise that sounds like water flowing.

-This is the sound of freon flowing inside the air
conditioner unit.

l

For a noise that sounds like the compressed air

releasing into atmosphere.

-This is the sound of the dehumidifying water
being processed inside the air conditioning
unit.

l

This sound is generated by the

expansion/contraction of the inlet grille, etc. due
to changes of temperature.

l

Has the circuit breaker been tripped?

NOTE

WATER RESISTANT: The outdoor side of this appliance is WATER RESISTANT.

The indoor side is not water resistant and should not be exposed to excess
water.

19

Wide LCD Wired Remote Controller (Optional)

20

27

Installer Setting - Setting Address of Central Control

26

F
E

D

F

E

D

C

B

A

B

0.0
Display

E12E 2.

Code

Remocon

2 Uninstall E14F 4.
1 Install E14E 4.
0 Same as before E14D 4.
1 set to slave E12F 2.

compensation

set to blackout

0

2 setting ari flow E12D 2.
1 off E12C 2.
0 low E12B 2.

1 Setting E12A 2.A

1 Setting E119 1.
0 deselect the setting E11A 1.
3 60 mins. E118 1.9
2 30 mins. E117 1.8
1 10 mins. E116 1.7
0 0 min. E115 1.6

Setting Valve

Code

Function

install or not

contact

To setting Dry
compensation

blackout

Operate / Stop

thermo off control

Cooling fan

heater

Ducted internal

Primary Heater

operate time

Auto on/off sensor

Function

Installer Setting - Installer Setting Code Table

25

Installer Setting - How to enter installer setting mode

24

medium and high.
Used to select fan speed in three steps low,
INDOOR FAN SPEED SELECTION Button

* Function not applicable for Lo-Static Duct Model.

*

*

*

*

*

C) Remote Control Operations

23

B) Remote Control Preparation

Cooling model: Low static Type Air Conditioner for cooling

Connection Tube

Power Wire
Connecting Wire

Vents

Air Outlet

(side, rear)

Air Intake

Outdoor Unit

22

temperature is 18 °C and the Wind strength is high.
indoor unit, duct runs cooling mode for 18 minutes, where the desired
Emergency Operation button for 5 seconds, until the LED flickers. Then the
After installing the product, you must run a Test Run mode. Press the

first power on operation.

6 Filter Sign lamp (Green) : Lights up after 2,400 hours from the time of
5 System On/Off lamp (Red) : Lights up during system controller operation.

cooling only models.

4 Hotstart lamp (Orange) : Available only for the heat pump models, not
3 Timer lamp (Green) : Lights up during the timer operation.
2 Signal Detector : Receives the signal from remote control

remote control is not working.
1 Emergency Operation button :Turns the indoor unit on or off even when

Signal Recepter

1

3
5

2

4
6

Lamps
Operation of Indication

(Standard)

Wireless Remote Receiver & Controller

Controller (Optional)

Wired Remote

A) Indoor Unit, Outdoor Unit

8. Operating Instructions

21

OPEN CLOSE

Vaccum pump

Closed

Outdoor unit

Closed

valve

3-way

Gas side

3-way valve

2-way valve/

Liquid side

Indoor unit

(Tightening torque: 1.8kg.m)

7. Disconnect the charge hose and fit the nut to the service port.

6. Tighten the valve stem nuts of the 2-way valve and 3-way valve.

hexagon wrench.

5. Remove the valve stem nuts, and fully open the stems of the 2-way and 3-way valves with a

76cmHg.

4. Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below -

service port by the charge hose.

3. Remove the service port nut, and connect the gauge manifold and the vacuum pump to the

2. After connecting the piping, check the joints for gas leakage with gas leak detector.

1. Confirm that both the liquid side valve and the gas side valve are set to the closed position.

on the compressor.
The air which contains moisture remaining in the refrigeration cycle may cause a malfunction

7. Air Purging of the Connecting Pipes and the Indoor Unit

Trap

with gum type sealer.
around the pipings
Seal a small opening

20

or equivalent.

4. Fix the pipings onto the wall by saddle

room.
trap prevent water from entering into the
along the exterior wall, and make the

3. For m the pipings gathered by taping

from bottom to top.

2. Tape the Pipings and Connecting cable

above position of the Indoor Unit.
In case of the Outdoor Unit being installed

into electrical parts.
Trap is required to prevent water from entering

cord
Power supply

Drain hose

cable
Connecting

Pipings

Taping

with gum type sealer.
around the pipings
Seal a small opening

wall by saddle or equivalent.
along the exterior wall and fix it onto the

3. For m the pipings gathered by taping

Connecting Cable from bottom to top.

2. Tape the Pi p ings, drain hose an d

below position of the Indoor unit.
In case of the Outdoor unit being installed

avoid swinging in the wind.)
dip it into water, and fix it on the wall to
keep distance from the ground. (Do not
hose, the end of the drain-outlet should

• If you want to connect an additional drain

right pipings)
secure it with two Plastic Bands. (for the
unit wi th th e Insulati on m aterial and

1. Wrap the connecting portion of indoor

>> Piping Routine

19

• Proper starting power is not given to the compressor.

disturbance to the normal function of a overload protection device.

• Vibration of a magnetic switch, dama ge on the contact point there of, fuse breaking,

9) The following troubles would be caused by voltage drop-down.

8) Never fail to equip a leakage breaker where it is wet or moist.

(Particularly note the relation between cable length and thickness.)

7) Confirm that the cable thickness is as specified in the power sources specification.

marked on the name plate.

6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage

5) Confirm that electrical capacity is sufficient.

4) Specification of power source

rise to burn-out of the wires.)
Check them and make sure that they are all tightly fastened. (If they are loose, it could give
loose from vibrations to which the unit is subjected during the course of transportation.

3) The screw which fasten the wiring in the casing of electrical fittings are liable to come

2) Provide a circuit breaker switch between power source and the unit.

of wiring, be guided by the circuit diagram pasted on the inside of control box cover.

1) Never fail to have an individual power specialized for the air conditioner. As for the method

After the confirmation of the above conditions, prepare the wiring as follows:

CAUTION

cord
Power supply

Cover control

Cord Clamper

Terminal block

Over 5mm

Outdoor unit

position with the screw.

3. Refix the cover control to the original

with the holder (clamper).

2. Secure the cable onto the control board

following.
the control board individually as
Connect the wires to the terminals on
by loosening a screw.

1. Remove the Cover control from the unit

C) Outdoor Wiring Routine and Pipe Routine

JB-Q18GB2A1

JB-Q18GB2A0 / JB-Q24GB2A0 /

18

JB-Q18GB2A1
JB-Q24GB2A0
JB-Q18GB2A0

JB-Q24GB2A0

JB-Q18GB2A0 / JB-Q18GB2A1

JB-Q18GB2A0 / JB-Q24GB2A0 / JB-Q18GB2A1

JB-Q18GB2A0 / JB-Q24GB2A0 / JB-Q18GB2A1

17

charge model)

(R-410A Gas

JB-Q18GB2A1

charge model)

(R-410A Gas

JB-Q24GB2A0

JB-Q18GB2A0

charge model)

(R-410A Gas

JB-Q24GB2A0

JB-Q18GB2A1

JB-Q18GB2A0

16

not as per installation instructions.

• Warranty will be null & void if wiring is

Outdoor

25 NA

2.0 TR

25 NA

1.5 TR

JB-Q24GB2A0
JB-Q18GB2A0 / JB-Q18GB2A1

Model Capacity 1 Phase 3 Phase

• Capacity of circuit breaker

fitted.

Indoor

disconnect all supply lines must be
A disconnection device to adequately
between the power source and the unit.

• Use a recognized circuit breaker

conditioner.

Switch box

Circuit Breaker

power source
Main

supplying the current required by the air

• Select a power source that is capable of

requirements.

• All wiring must comply with local

A) Circuit Breaker Detail

the electrical wiring connection.
Perform the electrical wiring work according to

6). Connecting Cable between Indoor and Outdoor Unit

15

front direction, the IR receiver will be separated.
dicated with the arrow mark. And when you pull the driver in the
driver as shown in the picture and insert it into the hole as in­When dissemble he IR receiver from the bottom case, use a

Check the mark Up & Down on bottom case inside.
Fix the rear side of the installation board with the screw.

main PCB Assembly.
Connect the IR receiver cable to the CN-DISPLAY connector of

than 18mm to prevent it from being shown.
In Case 2, the diameter of the hole on the ceiling should be smaller

rear side of the bottom.
Case 2, connect the cable through the knock-out hole on the
Choose the connecting type as indicated Case 1 and Case2. In

14

Fig.1 Typical locations for IR Remote Sensor

level.)
(The standard height is 6 feet from floor
properly as shown in Fig.1.

no

R
e
m
o
t
e
C
o

n
t
r
o
l

l
e
r

T
E
M

no

6feet

P

The IR remote sensor should be installed

display of the IR remote sensor
LED display and ON/OFF button. For proper

- This IR remote sensor is equipped with

Remote Controller

TEMP

yes-Optional

Torque wrench

(Smaller Dia.)
Liquid side piping

(Bigger Dia.)
Gas side piping

no

yes

Remote Controller

TEMP

behind the remote controller.

- Uncontrolled areas such as an outside wall

- Concealed pipes and chimneys.

- Radiant heat from sun or appliances.

- Hot or cold air from ducts.

- Drafts, or dead spots behind doors and in corners.

Do not install the IR remote sensor where it can be affected by:

•

Install the IR remote sensor about 6 feet above the floor in an area with good air circulation at an average temperature.

5. IR Remote Sensor Installation & Operation

3/4" 6.6kg.m

5/8" 6.6kg.m

1/2" 5.5kg.m

3/8" 4.2kg.m

1/4" 1.8kg.m

Pipe size Torque

wrench.
tightening follows the arrow on the

Outdoor unit

wrench, ensure the direction for

• When tightening the flare nut with torque

wrenchuntilthe wrenchclicks.

2. Finally, tightenthe flare nut withtorque

fingers.
sufficiently tight en the flare nut with

1. Al ign th e ce nter of the pi pin gsand

Outdoor unit

1) Connecting the pipes to the

4. Connecting Pipes to the Outdoor Unit

13

brazing,

sockets. While

brazing

Water enters Plaster enters

ready-made
this

function,

using

from

one end of piping.

G)

2

b. When supplying inert gas, be sure to open

0.05~0.1kg/cm
(Nitrogen gas: Supply pressure
points.
pressure will generate pinholes at brazed
with inert gas. Note that excessive gas
formation of oxidation film by filling piping

a. This procedure is designed to prevent

CAUTION

prevent water or plaster from entering piping.
When connecting piping on rainy days or making a through-hole in wall, take due care to
(keep piping away from dust) and airtight (avoid refrigerant leakage).
When connecting piping, be sure to keep piping dry(keep piping away from water), clean

8)

Refrigerant piping(Flare piping)

the following:
will clog. The blowing of nitrogen gas (or carbonic gas) through 3-way valves is described in
gas) to prevent formation of oxidation film in copper piping; otherwise, the refrigerant circuit
thermal insulator with burner heat. While brazing, blow inert gas (nitrogen gas or carbonic
protect piping against heat with wet cloth to avoid damaging valve packing or burning
also

devices

of

serves to connect

perform brazing

Perform brazing using ready-made elbow. Aside from this function, brazing
position
piping resistance. Bending is, however, necessary in some places by virtue of the installation
In refrigerant piping, bending (in particular, acute bending) must be minimized to reduce

7)

Brazing

straight

pipes, generally

elbow. Aside

structure, piping distance or finishing appearance.

building

using

ready-made

or of the

bender

bender. Use

bend

pipe

with

ø19.05),

or

(ø12.7, ø15.88

diameter

in

is

this case, secure large R(radius) for the bend section and gradually bend pipe. If annealed
Annealed copper pipe with small diameter (ø6.35 or ø9.52) can be easily bent manually. In

appropriate for the pipe diameter.
copper

pipe

large

6) Pipe bending

12

again.

all round

thickness

Cracked Uneven

damaged

Surface

Inclined

Even length

the flared section and do flaring work
If flare is noted to be defective, cut off
Compare the flared work with figure.

5) Check

Cone

Yoke

Handle

Red arrow mark

Reamer

= Improper flaring =

Pipe

Slanted Uneven Rough

Bar

Flare nut

Inside is shining without scratches.

Clamp handle

Copper pipe

"A"

Copper tube

90

Smooth all round

Bar

Point down

tube

Copper

indicated dimension in the table above.
Firmly hold copper tube in a bar(or die) as

3/4" 1.0~1.3
5/8" 0.8~1.0
1/2" 0.5~0.8
3/8" 0.5~0.8
1/4" 0~0.5

Outside Diameter "A"

as shown below.
Carry out flaring work using flaring tool

4) Flaring work

work)
(Not possible to put them on after flaring
removal.
pipe/tube having completed burr
and outdoor units, than put them on
Remove flare nuts attached to indoor

3) Putting nut on

tubing.
in order to avoid to let burrs drop in the
downward direction as you remove burrs
Put the end of the copper tube/pipe to
cross section of pipe/tube.
Completely remove all burrs from the cut

2) Burrs removal

length.
Cut the cable 1.5m longer than the pipe
measured distance.
Cut the pipes a little longer than
indoor and the outdoor unit.
Measure the distance between the
purchased locally.
Use the accessory piping kit or the pipes

1) Cut the pipes and the cable.

in the following procedure.
flaring work. Carry out correct flaring work
Main cause of gas leakage is defect in

3-1. Preparation of Piping

3. Connecting Pipes to the Indoor Unit

11

(Service valves)
Flared connections

Indoor

R-410 15gm

R-410 30gm

R-410 15gm

Gas Charge

Additional

50cm
More than

10cm

Outdoor unit

B

A

5

Elevation(B meter)

100cm
More than

Indoor unit

Length(A meter)

obstacles

ence or

F

Sunroof

1/4" 7.5 30 15

50cm
More than

U-Trap

Use seamless pipe

Flared connection (union)

and

maximu m allowance

1/2"

Gas Liquid standard Max standard Max

( Dia In Inch)

Pipi Sizes

length

Factory charged gas

standard

2.0 TR 5/8" 3/8" 7.5 50 5 30

1.5 TR 1/2" 1/4" 7.5 30 5 15
Capacity

Outdoor

should be added [(15-5) x 15g = 150g].

• If 18K model is installed at a distance of 15m, 150g of refrigerant

• Oil trap should be installed every 5 meters.

length is on the b asis of reliability .

is

JB-Q18GB2A1 1.5 TR

JB-Q24GB2A0

JB-Q18GB2A0

Model

• Capacity

based

on

>>Piping length and the elevation

the w all, ceiling, fence or other obstacles.

• Ensure the spaces i ndicated by arrows from
discharged.
which could be affected by hot air

• There should not be any animals or plants
restricted.
that heat radiation from t he condenser is not
direct sunlight or rain exposure, be careful

•If an awning is built over the unit to prevent

>>Outdoor unit space requirement.

10

330

545 560

190 770 288

575

1180

1.5TR

2.0TR

1180 575 190 800 260 555 590 305

1.5TR

1180 575 190 800 260 555 590 305

W D H W D H L1 L2

JB-Q18GB2A1
JB-Q24GB2A0

JB-Q18GB2A0

Model Capacity Indoor dimension Outdoor Dimension

H

W

D

Indoor Unit

L2

Connection Pipe

Connecting Wire

Control Cover

L1

vents

Air outlet

H

vents

Air intake

(Rear)

W

(Side)

D

operating costs.

efficiency of the system and cause higher
Dirty or clogged coils will reduce the operating

Note:

Outdoor Unit

Outdoor Unit

may be professionally steam cleaned.
with dirt or soot, the heat exchanger and panel vents
outdoor unit should be checked regularly. If clogged
The heat exchanger coils and panel vents of the

F). Outdoor Unit best location & piping.

9

Drain Pump use

Drainage hole

H

F

I

A B C D E F G H I J

18/24k Btu/h

1130 1180 383 575 93 190 21 1065 163 1100

Capacity(Btu/h)

Dimension

(Unit:mm)

G

CE

D

J

A
B

3

Re-install the air filter.

2

After washing with water, dry well in the shade.

may be deformed.

• If hot water (50°C or more) is used, filter

detergent in lukewarm water.

• If very dirty, wash with a solution of

water.

1

Clean the filter with a vacuum or warm, soapy

Indoor Unit Dimensions (mm)

once every 2 weeks or more often if necessary.
(the suction side) should be checked and cleaned
The air filters behind Indoor unit

Air Filter

e

n

z

e

G

R

E

R

A

B

L

C

R

I

N

U

G

O

C

S

n

e

B

R

E

N

N

I

S

of the air conditioner.
Could damage the surfaces

• Volatile substances

discoloration.
Could cause deformation and/or

• Water hotter than 40°C

q

Never use any of the followings:

cleaning the indoor unit.
Supply power must be disconnected before

Note:

abrasives.
wipe with a soft, dry cloth. Do not use bleach or

q Turn the system off before cleaning. To clean,

Grille, Case, and Remote Control

Indoor Unit

Caution: Before performing any maintenance, turn off the main power to the system.

Care and maintenance

8

• Ground Is the unit safely grounded?

• Insulation Is the unit fully insulated?

• Lock-bolt ....................... Is the lock-bolt of compressor loosened?

• Wiring ........................... Is the wiring connection correctly?

• Gas leakage ................. Is the piping connection correctly?

• Drain ............................. Is the drainage smoothly and no sweating?

• Air distribution ............... Is the air circulation good?

n After all workings are finished, check the working and operation.

Cabinet

piping(Local supply)
Thermal insulator for

insulator for piping.
Overlap with thermal

Rubber

Felt

(Local supply)
Thermal insulator for refrigerant pipe

No clearance

Insulation

Make sure that there is no clearance here.

Hose clip for thermal insulator(Local supply)

for liquid pipe

TEST AND CHECK

Union for liquid pipe

(Local supply)

(Local supply)

Union for gas pipe

Thermal insulator for refrigerant pipe

Hose clip for thermal insulator

insulator(Local supply)

Refrigerant pipe and thermal

INDOOR UNIT

All thermal insulation must comply with local requirement.

Insulate the joint and tubes completely.

THERMAL INSULATION

INSULATION, OTHERS

E). Insulation of the Piping & Drain

(Other)

for gas pipe

• Installation manual

• Owner's manual

Remote

Wireless

1 EA 1 EA

IR Receiver

1 SET

fitting

4 EA

Insulation for

(Tie Wrap)

Clamp

8 EA

Washer for

2 EA

hanging backet

1 EA

Clamp metal

Drain hose

Shape

Quantity

Name

Standard Accessories

(air filter cleaning, temperature control, etc.)
Teach the customer the operation and maintenance procedures, using the operation manual.

HAND OVER

Max 700mm

1/50~1/100 slope

1~15m

Hanger Bracket

distance
Hanger

Flexible drain hose

Insulation

clamp
Metal

Max 300mm

7

indoor unit.
flexible drain hose to the drain port on the

• When the test is comp le te, conn ec t the
is complete.
operating and noise when electrical wiring

• Be sure to check the drain pump for normal
check the piping for leakage.

• Feed water to the flexible drain hose and
comes to an end.
an d leave it p ro vi sio nal ly unti l the tes t

• Connect the main drain pipe to the exterior

Glue the joint

drain pipe
Main

Use the clip
Drain hose connection

port
Drain

Flexible drain hose

• Proper starting power is not given to the compressor.

mal function of an overload protection device.

• Vibration of a magnetic switch, damage on the contact point, fuse breaking, disturbance by the nor-

9) The following troubles would be caused by voltage drop-down.

8) Never fail to equip a leakage breaker where it is wet or moist.

(Particularly note the relation between cable length and thickness.)

7) Confirm that the cable thickness is as specified in the power sources specification.

marked on the name plate.

6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage

5) Confirm that electrical capacity is sufficient.

4) Specification of power source

of the wires.)
and make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out
from vibrations to which the unit is subjected during the course of transportation. Check them

3) The screws which fasten the wiring in the casing of electrical fittings are liable to come loose

2) Provide a circuit breaker switch between power source and the unit.

wiring, be guided by the circuit diagram posted on the inside of control box cover.

1) Never fail to have an individual power specialized for the air conditioner. As for the method of

After the confirmation of the above conditions, prepare the wiring as follows:

CAUTION:

may cause a leakage of water.
screwed. The curved or screwed hose

hose should not be curved, neither

CAUTION : The supplied flexible drain

Drain pan

Drain Pump

Feed water

Use the following procedure to test the drain pump operation:
The air conditioner uses a drain pump to drain water.

Drain test

not allowed
routing
Upward

drain port
Maintenance

Indoor unit

Pipe clamp

ness more than 8 mm.
Heat insulation material: Polyethylene foam with thick-

Be sure to install heat insulation on the drain piping.

•

pipe fittings
Pipi ng materi al: Polyvinyl chloride pipe VP- 25 and

32mm.

• The outside diameter of the drain connection on the indoor unit is

on the drain port on the indoor unit.

• During drain piping connection, be careful not to exert extra force

provide up-and-down slope to prevent reversal flow.

• Drain piping must have down-slope (1/50 to 1/100): be sure not to

D). Drain Piping

6

Drain Pump use

Drainage hole

Air Filter

Panel Rear

Ceiling

Front of view

CAUTION

side.

• Low static duct type in case of suction from bottom

Air outlet

Panel Rear

installation.

• The unit must be horizontal or declined to the drain hose connected when finished

2. Minimum thickness of the insulation for the connecting pipe shall be 19mm.

1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner.

side.

• Low static duct type in case of suction from back

Air outlet

Air Filter

C).Filter convertible option.

5

X 8

X 4

bolts

5 Suspension

4 Nut

3 Spring washer

Plate washer

1 Set anchor

M10 Nut

M10 washer

Old building New building

and spring washers.
bolts (adjust level roughly) using nuts, washers

• Secure the installation plates onto the suspension

•

Mount the suspension bolts to the set anchor firmly.
ceiling.
sion bolts for locking the suspension bolts on the

• Insert the set anchor and washer onto the suspen-

to prevent unit falling.

CAUTION : Tighten the nut and bolt

• Drill the hole for set anchor on the face of ceiling.

• Select and mark the position for fixing bolts.

Indoor Unit Installation

• A place where service can be easily performed.

• A place where the unit can withstand its vibration.

the weight of the unit.

• A place where the unit will be leveled and that can support

POSITION OF CONSOLE BOLT

for easy water drainage.

• Install the unit leaning to a drainage hole side as a figure

CASE 2

X 4

X 4

F

I

M10 washer

M10 Nut

H

Drain Pump use

Drainage hole

18/24k Btu/h

1130 1180 383 575 93 190 21 1065 163 1100

A B C D E F G H I J

Capacity(Btu/h)

Dimension

(Unit:mm)

G

• Apply a filter Accessory at air return hole.

unnecessary vibration.

• Apply a joint-canvas between the unit and duct to absorb

CE

D

POSITION OF SUSPENSION BOLT

CASE 1

J
A
B

Install the unit above the ceiling correctly.

Installation of Unit

B).Ceiling dimension and hanging bolt location

4

A

Ceiling

B

H=20 or more

Service Space

B(Min)

Remarks

A(Min)

Low static Duct type

to drain as aiven in the fiaure

• Suitable dimension "H" is necessary to get a slooe

Minimum height for motor replacement.

Insufficient space. Difficult for servicing

Sufficient space in the ceiling for servicing.

Less than 20cm

20cm to 100cm2

More than 100cm1

Distance between

B

(Length: mm)

Hole size should be

False ceiling & Actual ceiling

600 1100

A

Inspection hole

Number of

18/24k

more than the size of IDU.

[Inspection Hole Standard]

Capacity(Btu/h)

under the product.

• Installation the ceiling opening to clean the filter or service

suspension bolts.
Confirm the positional relationship between the unit and

600600

Control box

(600 x 600)

Inspection hole

unit

• There should not be any heat source or steam near the

Side view (unit: mm)

• The place where air circulation in the room will be good .

noise.

• The place where the unit is not affected by an electrical

• The place shall easily connect with the outdoor unit.

• The place where the unit shall be leveled.

• The place shall be able to inspect the unit as the figure.

indoor unit’s weight.

• The place shall easily bear a load exceeding four times the

lowing conditions.
Install the air conditioner in the location that satisfies the fol-

Indoor unit

A).Selection of the best location of Indoor

2). Installation of indoor & Outdoor.

3

•

It will cause product breakdown or electric shock.

Do not touch or pull the lead wire with wet hands.

could cause an explosion.

• If gas leaks and accumulates in the area surrounding the unit, it

inflammable gas leaks.
Do not install the unit in a place where an

• It will cause product breakdown or malfunction

or select two buttons.
Do not press the screen using powerful pressure

wet and damaged.
could drop from the unit and household goods could be

• If there is a defect in th e d rainage /piping work, water

according to the installation manual.
Perform the drainage/piping work securely

CAUTION

water due to a fire, electric shock, the unit falling, etc.

• The use of defective parts could cause an injury or leakage of

the installation work.
Be sure to use the part provided or specified parts for

in a fire or electric shock due to dust, water, etc.
panel if the outdoor unit are not attached securely, it could result

• If the electrical part cover if the indoor unit and/or the service

the service panel to the outdoor unit securely.
Attach the electrical part cover to the indoor unit and

shock.
incomplete electrical work, it could result in a fire or an electric

• If th e capaci ty o f t he power circu it is insufficient or there is

manual and be sure to use an exclusive circuit.
Perform electrical work according to the installation

fire, electric shock, the unit falling or a leakage of water.

• Incomplete installation could cause a personal injury due to

installation manual.
Perform the installation securely referring to the

installation is completed.
Check that the refrigerant gas do not leak after

• Incomplete connecting and fixing could cause fire.

of the wires is not applied to the sections.
the terminal board connecting sections so the stress
outdoor units securely and attach the wires firmly to
Use the specified wires to connect the indoor and the

causing injured.

• When installed in an insufficient strong place, the unit could fall

weight of the unit.
Install the unit securely in a place which can bear the

you purchased the unit or special installer.
the unit falling or a leakage of water. Consult the dealer from whom

• Incomplete installation could cause injury due to fire, electric shock,

Do not install it yourself (customer).

WARNING

place.

• After reading this manual, be sure to keep it together with the owner's manual in an accessible

Could lead to serious injury in particular environments when operated incorrectly.

Could lead to death, serious injury, etc.

CAUTION

WARNING

• The indications and meanings are as follows.

• Be sure to observe the cautions specified here as they include important items related to safety.

installing the air conditioner.

• Be sure to read "THE FOLLOWING SHOULD BE ALWAYS OBSERVED FOR SAFETY" before

• Please report to or take consent by the supply authority before connecting to the system.

1. The following should be always observed for safety

16

14

2

C) Remote Control Operations .. ............... 24

B) Remote Control Preparation .. .............. 23

A) Indoor Unit, Outdoor Unit ...................... 22

8. Operating Instructions.................... ........................................................ 22

•

Gas-leak Detector

•

Hexagonal Wrench (4mm/5mm)

•

Screw driver

7. Air Purging of the Connecting Pipes and the Indoor Unit.................... 21

C) Outdoor Wire Routine & Pipe Routine.......19

detail.................................. ................17

B) Wiring diagram, wiring specification & interconnection

A) Circuit Breaker Detail......................16

6. Connecting Cables between Indoor Unit and Outdoor Unit ................

5. IR Remote Sensor installation & operation detail.................................

Unit

..........14

14

Insulation materials

•

•

Insulated drain hose
Liquid

side

•

FlaringTools set

side

Gas

•

Pipes:

Piping...12

of

12

•

Hole core drill (ø70mm)
Electric drill

•

Screw driver

•

•

Level

screws

•

Connecting cable
Four Type “A”

•

4

3

the

Outdoor

1) Connecting the pipes to

4. Connecting Pipes to the Outdoor Unit ..................................................

1) Preparation

3. Connecting Pipes to the Indoor Unit .....................................................

F)

Out door unit best location & piping ....10

E)

Insulation of the piping & drain...08

D)

Drain piping .........................07

Filter convertible option.......06

C)
B)

Ceiling dimension & Hanging blot detail........05

A)

Selection of best location of indoor .....04

2. Installation of Indoor, Outdoor unit .........................................................

Installation works Installation Parts Required tools

1.The following should be always observed for safety..............................

Index Page No.

OUT-LINE OF INSTALLATION

Regd. Office : LG Electronics India Pvt. Ltd., A Wing (3rd Floor), D-3, District Center, Saket, New Delhi - 110017

12 x 7

[e-mail]

please write to [e-mail]
For Corporate/Instutional enquiries,
To know more about LG, visit www.lg.com

MFL62760204

CLICK

www.lg.com/in/support

(9:00 AM – 9:00 PM)

CALL

1800-180-3575 (Toll Free)

CUSTOMER CARE

P/No. : MFL62760204_v1

For Single LO-Static duct models

TYPE : LO-STATIC CEILING DUCT TYPE AIR CONDITIONER

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

CONDITIONER

AIR

INSTALLATION MANUAL