LG ABNQ42GM3T2 Installation Manual
INSTALLATION MANUAL
Ceiling Concealed Duct
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.
ENGLISH
P/NO:
MFL67939937
Rev.04_09092019
Copyright © 2019 LG Electronics Inc. All Rights Reserved
www.lg.com
• 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 :
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:
TIPS FOR SAVING ENERGY
ENGLISH
TIPS FOR SAVING ENERGY
2
3
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product
WARNING
It can result in serious injury or death when the directions are ignored
CAUTION
It can result in minor injury or product damage when the directions are ignored
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Installation work must be performed in accordance with the National Electric Code by qualified and authorized personnel only.
• 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.
!
!
!
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
Installation
Always perform grounding.
•
- Otherwise, it may cause electrical shock.
• For installation of the product, always contact the service center or a professional installation
agency. - Otherwise, it may cause a fire, electrical shock, explosion or injury.
• Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.
- If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not
attached securely, it could result in a fire or electric shock due to dust, water, etc.
• Always install an earth leakage circuit breaker and a dedicated switching board. - No installation may
cause a fire and electrical shock.
• Do not keep or use flammable gases or combustibles near the air conditioner. - Otherwise, it may
cause a fire or the failure of product.
• Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time.
- It may cause injury or an accident.
• Do not disassemble or repair the product randomly. - It will cause a fire or electrical shock.
• Do not install the product at a place that there is concern of falling down. - Otherwise, it may result
in personal injury.
• Use caution when unpacking and installing. - Sharp edges may cause injury.
• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress
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.
• Consult your lacal dealer regarding what to do in case of refrigerant leakage.
When the air conditioner is to be installed in a small room, it is necessary to take proper measures
so that the amount of any leaked refrigerant does not exceed the concentration limit in the event of
a leakage. Otherwise, this may lead to an accident due to oxygen depletion.
• Carry out the specified installation work after taking into account earthquakes.
Failure to do so during installation work may result in the unit falling and causing accidents.
carried out by qualified personnel according to local laws and regulations and this installation manual.
An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire.
• Be sure to switch off the unit before touching any electrical parts.
• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the
terminal connections or wires.
• If refrigerant gas leaks during installation, ventilate the area immediately.
Toxic gas may be produced if the refrigerant gas comes into contact with fire.
Operation
• Turn off the unit if strange sounds, smell, or smoke comes from it. - Otherwise, it may cause electrical shock or a fire.
• Keep the flames away. - Otherwise, it may cause a fire.
• Do not touch the power cable with wet hands when it taking out . – Otherwise, it may cause a ifre
or electrical shock.
• Do not open the suction inlet of the indoor/outdoor unit during operation. - Otherwise, it may electrical shock and failure.
• Do not allow water to run into electrical parts. - Otherwise, it may cause the failure of machine or
electrical shock.
• Never touch the metal parts of the unit when removing the filter. - They are sharp and may cause
injury.
• Do not step on the indoor/outdoor unit and do not put anything on it. - It may cause an injury through
dropping of the unit or falling down.
• When the product is submerged into water, always contact the service center. - Otherwise, it may
cause a fire or electrical shock.
• Take care so that children may not step on the outdoor unit. - Otherwise, children may be seriously
injured due to falling down.
CAUTION
Installation
• Install the drain hose to ensure that drain can be securely done. - Otherwise, it may cause water
leakage.
• Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to
the neighbors. - Otherwise, it may cause dispute with the neighbors.
• Always inspect gas leakage after the installation and repair of product. - Otherwise, it may cause the
failure of product.
• Keep level parallel in installing the product. - Otherwise, it may cause vibration or water leakage.
Operation
• Avoid excessive cooling and perform ventilation sometimes. - Otherwise, it may do harm to your
health.
• Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent. - The appearance of the air
conditioner may deteriorate, change color, or develop surface flaws.
• Do not use an appliance for special purposes such as preserving animals vegetables, precision
machine, or art articles. - Otherwise, it may damage your properties.
• Do not place obstacles around the flow inlet or outlet. - Otherwise, it may cause the failure of appliance or an accident.
• Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box
cover are removed or opened.
!
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
4
• Make sure that a separate power s
upply circuit is provided for this unit and that all electrical work is
TABLE OF CONTENTS
ENGLISH
5
TABLE OF CONTENTS
STRUCTIONS
6 INTRODUCTION
2 TIPS FOR SAVING EN
ERGY
3 IMPORTANT SAFETY IN
6 Features
7 IN
7 Selection of the best location
7 Installation of Unit
10 Indoor Unit Drain Piping
10 Drain test
11 Thermal insulator
1
2 Wiring Connection
STALLATION OF IN
13 INSTALLATION IN
16 Remote controller installation
17 Group control
18 Installer Setting - Group Setting
19 Installer Setting - Thermistor
20 Installer Setting – Static Pressure Step
Setting
21 Installer Setting - Static Pressure
Setting
22 Installer Setting -E.S.P.
23 Installer Setting -Test Run Mode
27 Installer Setting - Dry Contact Mode
Setting
DOOR
STRUCTION
28 DIP SWITCH SETTING
6
INTRODUCTION
ENGLISH
Features
INTRODUCTION
Air inlet vents
Air outlet
vents
Remote
Controller
INSTALLATION OF INDOOR
ENGLISH
7
Selection of the best location
- 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 allow easy water
drainage.(Suitable dimension “H” is necessary to get a slope to drain as figure.)
- 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
- Confirm the positional relationship between
the unit and suspension bolts.
- Thermal insulator the ceiling opening to clean
the filter or service under the product.
Installation of Unit
Install the unit above the ceiling correctly.
Position of suspension Bolt
- Apply a joint-canvas between the unit and
duct to absorb unnecessary vibration.
- Apply a filter Accessory at air return hole.
CASE 1
INSTALLATION OF INDOOR
(Unit:mm)
ABCDEFGHI J
1283.4 1321.6 619.2 689.6 30 270 15.2 1208 201.4 1250
Dimension
Capacity
(Btu/h)
Top view
Unit: mm
Air inlet vents
Inspection hole
600 x 600
Control box
E
C
D
J
A
B
I
F
H
Drainage hole
G
Front view
Unit: mm
Air outlet vents
1000
Front
Flexible
pipe
Air outlet
Roof
Cloth tube
600
Outlet air intake
H
Suction
tube
Ceiling Panel
Check port
Internal Unit
Ceiling Panel
discharge
60k(54k),48k,42k,36k
1283.4 1321.6 619.2 689.6 30 360 15.2 1208 291.4 1250
30k
18k,24k
933.4 971.6 619.2 700 30 270 15.2 858 201.4 900
8
INSTALLATION OF INDOOR
ENGLISH
- Install the unit leaning to a drainage hole side
as a figure for easy water drainage.
Position of console Bolt
- A place where the unit will be leveled and
that can support the weight of the unit.
- A place where the unit can withstand its vibration.
- A place where service can be easily performed.
- Select and mark the position for fixing bolts.
- Drill the hole for set anchor on the face of
ceiling.
- Insert the set anchor and washer onto the
suspension bolts for locking the suspension
bolts on the ceiling.
- Mount the suspension bolts to the set anchor firmly.
- Secure the installation plates onto the suspension bolts (adjust level roughly) using
nuts, washers and spring washers.
CASE 2
M10 Nut
M10 SP. washer
M10 washer
X 4
X 4
(Local
supply)
X 4
M10 Nut
M10 SP. washer
M10 washer
X 4
X 4
(Local
supply)
X 4
1 Set anchor
Old building New building
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
CAUTION
Tighten the nut and bolt to prevent unit
falling.
!
INSTALLATION OF INDOOR
ENGLISH
9
CAUTION
• Install declination of the indoor unit is very important for the drain of the duct type air conditioner.
• Minimum thickness of the insulation for the connecting pipe shall be 5mm.
Front of view
• The unit must be declined to the drain hose connected when finished installation.
!
Ceiling
Drainage hole
Drainage hole
CORRECT
INCORRECT
5~10mm
Drainage hole
U-Trap
B
C
A 70 mm
B 2C
C 2 x SP
SP = External Pressure
(mmAq)
Ex) External Pressure
= 10 mmAq
A 70 mm
B 40 mm
C 20 mm
A
Make sure to be closed.
Unit
Drainage pipe
(Local supply)
Thermal insulator
(Local supply)
• Always lay the drain with downward
inclination (1/100 to 1/50).
Prevent any upward flow or reverse flow
in any par t.
• 10 mm or thicker formed thermal insulator
shall always be provided for the drain
pipe.
• Install the P-Trap (or U-Trap) to prevent
a water leakage caused by the blocking
of intake air filter.
Applied U-Trap Dimension
CORRECT
INCORRECT
• Upward routing not
allowed
Caution for gradient of unit and drain piping
Lay the drain hose with a downward inclination so water will drain out.
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