LG ZB-Q18GL5A1 User manual

INSTALLATION MANUAL
AIR CONDITIONER
Before beginning installation, read these instructions
carefully. This will simplify installation and ensure that the
product is installed correctly and safely. Leave these
instructions near the product after installation for future
reference.
ENGLISH
Duct
MFL62760206
Rev.00_070423
www.lg.com
Copyright © 2023 LG Electronics Inc. All Rights Reserved.

TABLE OF CONTENTS
This manual may contain images or
content that may be different from the
model you purchased.
This manual is subject to revision by the
manufacturer.
SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE...........................................................3
WARNING............................................................................................................4
CAUTION .............................................................................................................5
INSTALLATION
Location Selection..............................................................................................8
Minimum Floor Area..........................................................................................9
Indoor Unit Installation...................................................................................12
Drain Piping ......................................................................................................19
IR Receiver ........................................................................................................25
After Installation
Air Purge ...........................................................................................................27
Operating Instructions....................................................................................27

3
SAFETY INSTRUCTIONS
ENGLISH
SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
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.
Safety Messages
This symbol is displayed to indicate matters and operations
that can cause risk.
Read the text 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 injuries or death.
CAUTION
This indicates that the failure to follow the instructions can
cause minor injury or damage to the appliance.

4
SAFETY INSTRUCTIONS
Notes for Flammable Refrigerant
The following symbols are displayed on units.
WARNING
WARNING
• To reduce the risk of explosion, fire, death, electric shock, injury or
scalding to persons when installing this product, follow basic
precautions, including the following:
Installation
• Do not install it yourself (customer).
- Incomplete installation could cause injury due to fire, electric shock,
the unit falling or a leakage of water. Consult the dealer from whom
you purchased the unit or special installer.
• Perform the installation securely referring to the installation manual.
- Incomplete installation could cause a personal injury due to fire,
electric shock, the unit falling or a leakage of water.
• Install the unit securely in a place which can bear the weight of the
unit.
- When installed in an insufficient strong place, the unit could fall
causing injured.
This symbol indicates that this appliance uses a flammable
refrigerant. If the refrigerant is leaked and exposed to an
external ignition source, there is a risk of fire.
This symbol indicates that the Owner's Manual should be read
carefully.
This symbol indicates that service personnel should be handling
this equipment with reference to the Installation Manual.
This symbol indicates that information is available in the Owner's
Manual or Installation Manual.

5
SAFETY INSTRUCTIONS
ENGLISH
• Perform electrical work according to the installation manual and be
sure to use an exclusive circuit.
- If the capacity of the power circuit is insufficient or there is
incomplete electrical work, it could result in a fire or an electric
shock.
• Use the specified wires to connect the indoor and the outdoor units
securely and attach the wires firmly to the terminal board connecting
sections so the stress of the wire is not applied to the sections.
- Incomplete connecting and fixing could cause fire.
• Attach the electrical part cover to the indoor unit and the service
panel to the outdoor unit securely.
- If the electrical part cover if the indoor unit and/or the service panel
if the outdoor unit are not attached securely, it could result in a fire
or electric shock due to dust, water, etc.
• Check that the refrigerant gas do not leak after installation is
completed.
• Be sure to use the part provided or specified parts for the installation
work.
- The use of defective parts could cause an injury or leakage of water
due to a fire, electric shock, the unit falling, etc.
CAUTION
CAUTION
• To reduce the risk of minor injury to persons, malfunction, or damage
to the product or property when installing this product, follow basic
precautions, including the following:
Installation
• Perform the drainage/piping work securely according to the
installation manual.
- If there is a defect in the drainage/piping work, water could drop
from the unit and household goods could be wet and damaged.

6
SAFETY INSTRUCTIONS
• Do not install the unit in a place where an inflammable gas leaks.
- If gas leaks and accumulates in the area surrounding the unit, it
could cause an explosion.

7
INSTALLATION
ENGLISH
INSTALLATION
Location Selection
Select the Best Location
Install the air conditioner in the location that
satisfies the following conditions
• The place shall easily bear a load exceeding four
times the indoor unit’s weight.
• The place shall be able to inspect the unit as the
figure.
• The place where the unit shall be leveled.
• The place shall easily connect with the outdoor
unit.
• The place where the unit is not affected by an
electrical noise.
• The place where air circulation in the room will
be good.
• There should not be any heat source or steam
near the unit.
(Unit: mm)
Suitable dimension "H" is necessary to get a slope
to drain as as figure.
Low Static Duct Type
Confirm the positional relationship between the
unit and suspension bolts.
• Installation the ceiling opening to clean the filter
or service under the product.
a Ceiling
b Service Space
Inspection Hole Standard
Capacity
(Btu/h)
A (mm) B (mm)
18 600 1000
24 600 1200
Number
of
inspectio
n hole
Distance
between
False
ceiling &
Actual
ceiling
Remarks
1More
than 100
cm
Sufficient space in the
ceiling for servicing
220cmto
100 cm
Insufficient space.
Difficult for serving

8
INSTALLATION
Accessories
Hole size
should be
more
than the
size of
IDU.
Less than
20 cm
Minimum height for
motor replacement
Name Quant
ity
Shape
Drain hose 1 EA
Clamp metal 2 EA
Washer for
hanging backet
8 EA
Clamp (Tie wrap) 4 EA
Insulation for
fitting
1 SET • For gas pipe
• For liquid pipe
IR receiver 1 EA
Number
of
inspectio
n hole
Distance
between
False
ceiling &
Actual
ceiling
Remarks
Wireless Remote 1 EA
Ohter • Owner's
manual
• Installation
manual
Name Quant
ity
Shape

9
INSTALLATION
ENGLISH
Minimum Floor Area
Required Floor Area for R32 Unit
• The appliance must be installed, operated and stored in a room with a floor area larger than the
minimum area.
• Use the graph and table to determine the minimum area.
• m : Total refrigerant amount in the system
• Total refrigerant amount : Factory refrigerant charge + Additional refrigerant amount
• A
min
: Minimum area for installation
Floor Standing Wall Mounted Ceiling Mounted
m (kg) A
min
(m
2
)m (kg) A
min
(m
2
)m (kg) A
min
(m
2
)
3 1.224 - 3 1.224 - 3 1.224 -
1.224 12.9 1.224 1.43 1.224 0.956
1.4 16.82 1.4 1.87 1.4 1.25
1.6 21.97 1.6 2.44 1.6 1.63
1.8 27.80 1.8 3.09 1.8 2.07
2 34.32 2 3.81 2 2.55
2.2 41.53 2.2 4.61 2.2 3.09
2.4 49.42 2.4 5.49 2.4 3.68
2.6 58.00 2.6 6.44 2.6 4.31
A min

10
INSTALLATION
2.8 67.27 2.8 7.47 2.8 5.00
3 77.22 3 8.58 3 5.74
3.2 87.86 3.2 9.76 3.2 6.54
3.4 99.19 3.4 11.02 3.4 7.38
3.6 111.20 3.6 12.36 3.6 8.27
3.8 123.90 3.8 13.77 3.8 9.22
4 137.29 4 15.25 4 10.21
4.2 151.36 4.2 16.82 4.2 11.26
4.4 166.12 4.4 18.46 4.4 12.36
4.6 181.56 4.6 20.17 4.6 13.50
4.8 197.70 4.8 21.97 4.8 14.70
5 214.51 5 23.83 5 15.96
5.2 232.02 5.2 25.78 5.2 17.26
5.4 250.21 5.4 27.80 5.4 18.61
5.6 269.09 5.6 29.90 5.6 20.01
5.8 288.65 5.8 32.07 5.8 21.47
6 308.90 6 34.32 6 22.98
6.2 329.84 6.2 36.65 6.2 24.53
6.4 351.46 6.4 39.05 6.4 26.14
6.6 373.77 6.6 41.53 6.6 27.80
6.8 396.76 6.8 44.08 6.8 29.51
7 420.45 7 46.72 7 31.27
7.2 444.81 7.2 49.42 7.2 33.09
7.4 469.87 7.4 52.21 7.4 34.95
7.6 495.61 7.6 55.07 7.6 36.86
7.8 522.04 7.8 58.00 7.8 38.83
Floor Standing Wall Mounted Ceiling Mounted
m (kg) A
min
(m
2
)m (kg) A
min
(m
2
)m (kg) A
min
(m
2
)