LG UTN24R User manual

ENGLISH
www.lg.com
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
OWNER’S MANUAL
AIR
CONDITIONER
CEILING CASSETTE, CEILING CONCEALED DUCT
Original instruction
MFL67870342
Rev.00_011119
Please read this manual carefully before operating your set and retain it for future
reference.

2
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
The following symbols are displayed on indoor and outdoor units.
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. This appliance is
intended to be used by expert or trained users in shops, in light industry and on farms, or for
commercial use by lay persons.
WARNING
• Always ground the product.
- There is a risk of electric shock.
• Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse.
- There is risk of fire or electric shock.
• Do not use a multi consent.
- Always use this appliance on a dedicated cicuit and breaker. Otherwise it can cause electric
shock or fire.
• For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service
Center.
- Do not disassemble or repair the product by yourself. There is risk of fire or electric shock.
• Always ground the product as per the wiring diagram.
- Do not connect the ground wire to gas or water pipes lightening rod or telephone ground wire.
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 due to dust, water etc.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
!
!
!
Read the precautions in this manual
carefully before operating the unit.
This appliance is filled with
flammable refrigerant (R32)
This symbol indicates that the
Operation Manual should be read
carefully.
This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.

IMPORTANT SAFETY INSTRUCTIONS
3
ENGLISH
• Do not modify or extend the power cable.
- If the power cable or cord has scrathes or skin peeled off or deteriorated then it must be
replaced. There is risk of fire or electric shock.
• For installation, removal or reinstall, always contact the dealer or an Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install the product on a defective installation stand.
- Be sure that the installation area does not deteriorate with age. It may cause product to fall.
• Never install the outdoor unit on a moving base or a place from where it can fall down.
- The falling outdoor unit can cause damage or injury or even death of a person.
• When the product is soaked (flooded or submerged) in water, contact an Authorized Service
Center for repair before using it again.
- There is risk of fire or eletric shock.
• Be sure to check the refrigerant to the used.
- Please read the label on the product. Incorrect refrigerant used can prevent the normal
operation of the unit.
• Don't use a power cord, a plug or a loose socket which is damaged.
- Otherwise it may cause a fire or electrical shock.
• Do not touch, operate, or repair the product with wet hands.
- Hold the plug by hand when taking out. There is risk of electric shock or fire.
• Do not place a heater or other heating appliances near the power cable.
- There is risk of fire and electric shock.
• Do not allow water to run into electric parts. Install the unit away from water sources.
- There is risk of fire, failure of the product, or electric shock.
• Do not store or use or even allow flammable gas or combustibles near the product.
- There is risk of fire.
• Indoor/outdoor wiring connections must be secured tightly and the cable should be routed
properly so that there is no force pulling the cable from the connection terminals.
- Improper or loose connections can cause heat generation or fire.
• Safely dispose off the packing materials.
- Like screws, nails, batteries, broken things etc after installation or svc and then tear away and
thraw away the plastic packaging bags. Children may play with them and cause injury.
• Make sure to check that the power cable plug is not dirty, loose or broken and then only insert
the plug completely.
- Dirty, loose or broken power plug can cause electric shock or fire.
• In outdoor unit the step-up capacitor supplies high voltage electricity to the electrical
components.
- Be sure to discharge the capacitor completely before conducting the repair work.
An charged capacitor can cause electrical shock.
• When installing the unit, use the installation kit provided with the product.
- Otherwise the unit may fall and cause severe injury.

4
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Be sure to use only those parts which are listed in the svc parts list.
- Never attempt to modify the equipment. The use of inappropriate parts can cause an electrical
shock, excessive heat generation or fire.
• Do not use the product in a tightly closed space for a long time. Perform ventilation regularly.
- Oxygen deficiency could occur and hence harm your health.
• Do not open the front grille of the product during operation. (Do not touch the electrostatic
filter, if the unit is so equipped.)
- There is risk of physical injury, electric shock, or product failure.
• If strange sounds, smell or smoke comes from product.
- Immediately turn the breaker off or disconnect the power supply cable. There is risk of electric
shock or fire.
• Ventilate the product room from time to time when operating it together with a stove, or
heating element etc.
- Oxygen deficiency can occur and hence harm your health.
• Turn the main power off and unplug the unit when cleaning or repairing the product.
- There is risk of electric shock.
• When the product is not to be used for a long time, disconnect the power supply plug or turn
off the breaker.
- There is risk of product damage or failure, or unintended operation.
• Take care to ensure that nobody especially kids could step on or fall onto the outdoor unit.
- This could result in personal injury and product damage.
• Take care to ensure that power cable could not be pulled out or damaged during operation.
- There is risk of fire or electric shock.
• Do not place ANYTHING on the power cable.
- There is risk of fire or electric shock.
• Do not plug or unplug the power supply plug to turn the unit ON/OFF.
- There is risk of fire or electric shock.
• When flammable gas leaks, turn off the gas and open a window for ventilation before turn the
product on.
- Do not use the telephone or turn switches on or off. There is risk of explosion or fire.
• Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control
box cover are removed or opened.
- Otherwise, it may cause fire, electric shock, explosion or death.
• 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.
• The appliance shall be stored in a room without continuously operating ignition sources (for
example : open flames, an operating gas appliance or an operating electric heater.)
• Keep any required ventilation openings clear of obstruction.
• The appliance shall be stored in a well-ventilated area where the room size corresponds to the
room area as specified for operation. (for R32)
• Ducts connected to an appliance shall not contain an ignition source. (for R32)

IMPORTANT SAFETY INSTRUCTIONS
5
ENGLISH
• Compliance with national gas regulations shall be observed.
• Mechanical connections shall be accessible for maintenance purposes.
CAUTION
• Two or more people must 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.
• Install the drain hose to ensure that the condensed water is drained away properly.
- A bad connection may cause water leakage.
• Keep level even when installing the product.
- To avoid vibration or noise.
• Do not install the product where the noise or hot air from the outdoor unit could damage or
disturb the neighborhoods.
- It may cause a problem for your neighbors and hence dispute.
• Always check for gas (refrigerant) leakage after installation or repair of product.
- Low refrigerant levels may cause failure of product.
• 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.
• Do not block the inlet or outlet of air flow.
- It may cause product failure.
• Use a soft cloth to clean. Do not use harsh detergents, solvents or splashing water etc.
- There is risk of fire, electric shock, or damage to the plastic parts of the product.
• Do not touch the metal parts of the product when removing the air filter.
- There is risk of personal injury.
• Do not step on or put anyting on the product.
- There is risk of personal injury and failure of product.
• Always insert the filter securely after cleaning.
- Clean the filter every two weeks or more often if necessary. A dirty filter reduces the
efficiency.
• Do not insert hands or other objects through the air inlet or outlet while the product is
operating.
- There are sharp and moving parts that could cause personal injury.
• Be cautious when unpacking and installing the product.
- Sharp edges could cause injury.
• If the refrigerant gas leaks during the repair, do not touch the leakaing refrigerant gas.
- The refrigernat gas can cause frostbite (cold burn)
• Do not tilt the unit when removing or uninstalling it.
- The condensed water inside can spill.
!

6
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Do not mix air or gas other than the specified refrigerant used in the system.
- If air enters the refrigerant system, an excessively high pressure results, causing equipment
damage or injury.
• If the refrigerant gas leaks during the installation, ventilate the area immediately.
- Otherwise it can be harmfull for your health.
• Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in
accordance with local and national standards.
• Replace the all batteries in the remote control with new ones of the same type.
- Do not mix old and new batteries or different types of batteries. There is risk of fire or product
failure.
• Do not recharge or disassemble the batteries.
- Do not dispose off batteries in a fire. They may burn or explode.
• If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water.
- Do not use the remote if the batteries have leaked. The chemicals in batteries could cause
burns or other health hazards.
• If you eat the liquid from the batteries, brush your teeth and see doctor.
- Do not use the remote if the batteries have leaked. The chemicals in batteries could cause
burns or other health hazard.
• 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.
• Do not expose your skin or kids or plants to the cool or hot air draft.
- This could harm to your health.
• Do not drink the water drained from the product.
- It is not sanitary and could cause serious health issues.
• Use a firm stool or ladder when cleaning, maintaining or repairing the product at an height.
- Be careful and avoid personal injury.
• 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.
• The appliance shall be stored so as to prevent mechanical damage from occurring.
• Any person who is involved with working on or breaking into a refrigerant circuit should hold a
current valid certificate from an industry-accredited assessment authority, which authorises
their competence to handle refrigerants safely in accordance with an industry recognised
assessment specification. (for R32)
• Servicing shall only be performed as recommended by the equipment manufacturer.
Maintenance and repair requiring the assistance of other skilled personnel shall be carried out
under the supervision of the person competent in the use of flammable refrigerants. (for R32)
• Wear adequate personal protection equipment (PPE) when installing, maintaining or servicing
the product.

IMPORTANT SAFETY INSTRUCTIONS
7
ENGLISH
• This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved.
- Children shall not play with the appliance. Cleaning and user maintenance shall not be made
by children without supervision.
• This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
- Children should be supervised to ensure that they do not play with the appliance.
• If the supply cord is damaged, it must be replaced by a special cord or assembly available from
the manufacturer of its service agent.
• The appliance shall be installed in accordance with national wiring regulations.
• Do not touch refrigerant pipe and water pipe or any internal parts while the unit is operating or
immediately after operation.
- There is risk of burns or frostbite, personal injury.
• The air conditioner should be used only for the applications for which it has been designed : the
indoor unit is not suitable to be installed in areas used for laundry.
• The installation of pipe-work shall be kept to a minimum.
• Means for disconnection must be incorporated in the fixed wiring in accordance with the wiring
rules.
• Pipe-work shall be protected from physical damage.

8
TABLE OF CONTENTS
ENGLISH
TABLE OF CONTENTS
2IMPORTANT SAFETY INSTRUCTIONS
10 INSTALLATION TOOLS
11 INSTALLATION PLACES
11 Installation Places for Indoor unit
13 Installation Places for Outdoor Unit
14 Installation Guide at the Seaside
14 Seasonal Wind and Cautions in Winter
15 THE INDOOR UNIT INSTALLATION
15 Position of Suspension Bolt
18 Heat Insulation
18 Indoor Unit Drain Piping
19 WIRING CONNECTION
19 Electrical Wiring
20 Connecting cables to the Unit
21 Connecting cables to the Outdoor Unit
22 CONNECTING PIPES
22 Preparation of Piping
23 Connecting the pipings to the indoor unit and drain hose to drain pipe
24 Connection of piping - Outdoor
25 Forming the piping
26 PIPING LENGTH AND THE ELEVATION
27 INSTALLATION OF DECORATIVE PANEL(ACCESSORY)
29 LEAKAGE TEST AND EVACUATION
29 Preparation
29 Leakage test
30 Evacuation
31 TEST RUNNING
33 INSTALLATION PI485
34 EXTERNAL STATIC PRESSURE
35 SELF-DIAGNOSIS FUNCTION
35 Indoor Unit Error
36 Outdoor Unit Error

TABLE OF CONTENTS
9
ENGLISH
37 DIP SWITCH SETTING FOR INDOOR UNIT
38 DIP SWITCH SETTING FOR OUTDOOR UNIT
38 DIP S/W Setting
39 Pump Down
40 Saving Power Consumption
41 Night Quiet Mode
42 Mode Lock
44 TIPS FOR SAVING ENERGY
45 BEFORE USE
45 About the system
45 Preparing for operation
45 Usage
45 Cleaning and maintenance
45 Service
45 Disposal
46 PRODUCT INTRODUCTION
46 Name and function of parts (CEILING CASSETTE)
46 Name and function of parts (CEILING CONCEALED DUCT)
47 Model designation
48 Operation Indicator Lamp
49 MAINTENANCE AND SERVICE
49 Indoor Unit
50 Purifying filter(Optional)
51 Operation Tips!
51 When the air conditioner is not going....
52 Troubleshooting Tips! Save time and money!
52 Call the service immediately in the following situations

10
INSTALLATION TOOLS
ENGLISH
more than
30cm more than
30cm
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Multi-meter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Level
Flaring tool set
Name
INSTALLATION TOOLS

INSTALLATION PLACES
11
ENGLISH
INSTALLATION PLACES
Installation Places for Indoor unit
• Suitable dimension "H" is necessary to get a
slope to drain as shown in the figure.
Unit : mm
Ceiling
Ceiling Board Ceiling Board
H
1 000 or more
500 or
more
500 or
more
300 or less
At least 1 800 H or less
Floor
10 or
more
Chassis H
TU/TT 3 300
TQ/TR/TP 3 600
TN/TM 4 200
H=20 or more
(unit: mm)
Front
Inspection hole 600 x 600
Control box
1 000
Air outlet vents
Air inlet vents
600 600
(unit: mm)
Top view
Side view
- There should not be any heat source or steam
near the unit.
- There should not be any obstacles to prevent the
air circulation.
- A place where air circulation in the room will be
good.
- A place where drainage can be easily obtained.
- A place where noise prevention is taken into
consideration.
- Do not install the unit near the door way.
- Ensure the spaces indicated by arrows from the
wall, ceiling, or other obstacles.
- The indoor unit must keep the maintenance space.
* Please use an annexed sheet or the
corrugated cardboard on the bottom of
packing as installation sheet.
* When using the bottom sheet, please use it
after separating the installation sheet from
packing of the product floor by using a knife
etc as a picture below.
Annexed sheet
Or
Packing corrugated
cardboard on the
bottom
[Inspection Hole Standard]
Number
of
Inspection
hole
Distance
between
False ceiling &
Actual ceiling
Remarks
1More than 100
cm
Sufficient space in the
ceiling for servicing.
220 cm to 100
cm
Insufficient space.
Difficult for servicing
Hole size
should be
more
than the
size of
IDU.
Less than 20
cm
Minimum height for
motor replacement.
* The feature can be changed according to
type of model.

12
INSTALLATION PLACES
ENGLISH
- The appliance shall be installed, operated and stored in a room with a floor area larger than the
minimum area.
- Use the graph of table to determine the minimum area.
- m : Total refrigerant amount in the system
- Total refrigerant amount : factory refrigerant charge + additional refrigerant amount
- Amin : minimum area for installation
Minimum floor area (for R32)
0
100
200
300
400
500
600
Amin (m2)
m (kg)
0 1.224 2 3 4 5 6 7 8
Floor standing
Wall mounted
Ceiling mounted
Floor location
m (kg) Amin (m2)
< 1.224 -
1.224 12.9
1.4 16.82
1.6 21.97
1.8 27.80
2 34.32
2.2 41.53
2.4 49.42
2.6 58.00
2.8 67.27
3 77.22
3.2 87.86
3.4 99.19
3.6 111.20
3.8 123.90
4 137.29
4.2 151.36
4.4 166.12
Floor location
m (kg) Amin (m2)
4.6 181.56
4.8 197.70
5 214.51
5.2 232.02
5.4 250.21
5.6 269.09
5.8 288.65
6 308.90
6.2 329.84
6.4 351.46
6.6 373.77
6.8 396.76
7 420.45
7.2 444.81
7.4 469.87
7.6 495.61
7.8 522.04
Wall mounted
m (kg) Amin (m2)
< 1.224 -
1.224 1.43
1.4 1.87
1.6 2.44
1.8 3.09
2 3.81
2.2 4.61
2.4 5.49
2.6 6.44
2.8 7.47
3 8.58
3.2 9.76
3.4 11.02
3.6 12.36
3.8 13.77
4 15.25
4.2 16.82
4.4 18.46
Wall mounted
m (kg) Amin (m2)
4.6 20.17
4.8 21.97
5 23.83
5.2 25.78
5.4 27.80
5.6 29.90
5.8 32.07
6 34.32
6.2 36.65
6.4 39.05
6.6 41.53
6.8 44.08
7 46.72
7.2 49.42
7.4 52.21
7.6 55.07
7.8 58.00
Ceiling Mounted
m (kg) Amin (m2)
< 1.224 -
1.224 0.956
1.4 1.25
1.6 1.63
1.8 2.07
2 2.55
2.2 3.09
2.4 3.68
2.6 4.31
2.8 5.00
3 5.74
3.2 6.54
3.4 7.38
3.6 8.27
3.8 9.22
4 10.21
4.2 11.26
4.4 12.36
Ceiling Mounted
m (kg) Amin (m2)
4.6 13.50
4.8 14.70
5 15.96
5.2 17.26
5.4 18.61
5.6 20.01
5.8 21.47
6 22.98
6.2 24.53
6.4 26.14
6.6 27.80
6.8 29.51
7 31.27
7.2 33.09
7.4 34.95
7.6 36.86
7.8 38.83

INSTALLATION PLACES
13
ENGLISH
- If an awning is built over the unit to prevent
direct sunlight or rain exposure, make sure that
heat radiation from the condenser is not
restricted.
- Ensure that the spaces indicated by arrows
around front, back and side of the unit are
respected.
- Do not place animals and plants in the path of
the warm air.
- Take the air conditioner weight into account and
select a place where noise and vibration are
minimum.
- Select a place so that the warm air and noise
from the air conditioner do not disturb
neighbors.
- Select a place that can sufficiently endure
the weight and vibration of the outdoor unit
and where even installation is possible.
- Select a place that has no direct impact of
snow or rain
- Select a place with no danger of snowfall or
icicle drop
- Select a place without weak floor or base
such as decrepit part of the building or with a
lot of snow accumulation
- Install at a place with fluent water draining to
prevent damage from localized heavy rain
and avoid frequent flooded area.
You need to select adequate installation
location considering the following conditions,
and make sure to acquire the consent of the
user.
Installation Places for
Outdoor Unit
More than
300 mm
Fence or
obstacles
More than 700 mm
More than 600 mm
More than
More than
300 mm
300 mm
More than
300 mm
Sunroof
A > 200 mm
Be very careful while carrying the
product.
• Do not have only one person carry
product if it is more than 20 kg (44 lbs).
• PP bands are used to pack some
products. Do not use them as a mean
for transportation because they are
dangerous.
• Do not touch heat exchanger fins with
your bare hands. Otherwise you may
get a cut in your hands.
• Tear plastic packaging bag and scrap it
so that children cannot play with it.
Otherwise plastic packaging bag may
suffocate children to death.
• When carrying in Outdoor Unit, be sure
to support it at four points. Carrying in
and lifting with 3-point support may
make Outdoor Unit unstable, resulting
in a fall.
• Use 2 belts of at least 8 m (26.2 ft)
long.
• Place extra cloth or boards in the
locations where the casing comes in
contact with the sling to prevent
damage.
•
Hoist the unit making sure it is being
lifted at its center of gravity.
CAUTION
!

14
INSTALLATION PLACES
ENGLISH
Sea wind
Sea wind
• Air conditioners should not be installed
in areas where corrosive gases, such as
acid or alkaline gas, are produced.
• Do not install the product where it could
be exposed to sea wind (salty wind)
directly. It can result corrosion on the
product. Corrosion, particularly on the
condenser and evaporator fins, could
cause product malfunction or inefficient
performance.
• If outdoor unit is installed close to the
seaside, it should avoid direct exposure
to the sea wind. Otherwise it needs
additional anticorrosion treatment on the
heat exchanger.
CAUTION
!
- It should be strong enough like concrete to
prevent the sea wind from the sea.
- The height and width should be more than
150 % of the outdoor unit.
- More than 70 cm of space should be kept
between outdoor unit and the windbreak for
easy air flow.
Place with fluent water draining
- Install at a place with fluent water draining to
prevent damage from localized heavy rain
and avoid frequent flooded area.
Seasonal Wind and Cautions
in Winter
- Sufficient measures are required in a snow
area or severe cold area in winter so that
product can operate well.
- Get ready for seasonal wind or snow in
winter even in other areas.
- Install a suction and discharge duct not to let
in snow or rain.
- Install the outdoor unit not to come in
contact with snow directly. If snow piles up
and freezes on the air suction hole, the
system may malfunction. If it is installed at
snowy area, attach the hood to the system.
- Install the outdoor unit at the higher
installation console by 50 cm than the
average snowfall (annual average snowfall) if
it is installed at the area with much snowfall.
- Where snow accumulated on the upper part
of the Outdoor Unit by more than 10 cm,
always remove snow for operation.
In case, to install the outdoor unit on the
seaside, set up a windbreak not to be
exposed to the sea wind.
In case, to install the outdoor unit on the
seaside, set If the outdoor unit is to be
installed close to the seaside, direct exposure
to the sea wind should be avoided.
Install the outdoor unit on the opposite side of
the sea wind direction. a windbreak not to be
exposed to the sea wind.
Selecting the location (Outdoor Unit)
• Periodic ( more than once/year ) cleaning
of the dust or salt particles stuck on the
heat exchanger by using water.
Sea wind
Windbreak
Installation Guide at the
Seaside

THE INDOOR UNIT INSTALLATION
15
ENGLISH
CAUTION
!
• This air-conditioner uses a drain pump.
• Install the unit horizontally using a level
gauge.
• During the installation, care should be
taken not to damage electric wires.
- Select and mark the position for fixing bolts and
piping hole.
- Decide the position for fixing bolts slightly tilted to
the drain direction after considering the direction
of drain hose.
- Drill the hole for anchor bolt on the wall.
NOTE
!
Avoid the following installation location.
1Such places as restaurants and kitchen where
considerable amount of oil steam and flour is
generated. These may cause heat exchange
efficiency reduction, or water drops, drain
pump mal-function. In these cases, take the
following actions;
- Make sure that ventilation fan is enough to
cover all noxious gases from this place.
- Ensure enough distance from the cooking
room to install the air conditioner in such a
place where it may not suck oily steam.
2Avoid installng air conditioner in such places
where cooking oil or iron powder is generated.
3Avoid places where inflammable gas is
generated.
4Avoid place where noxious gas is generated.
5Avoid places near high frequency generators.
Cooking table
Air conditioner
Take enough
distance
Use the ventilation fan for smoke-collecting
hood with sufficient capacity.
Level gauge
Ceiling
Ceiling board
Unit:mm
875(Ceiling opening)
Panel size : 950 X 950 mm
Panel size : 700 X 700 mm
787
684
671
875 (Ceiling opening)
840
840
[TM/TN/TP Chassis] (Unit : mm)
[TQ/TR Chassis] (Unit : mm)
585~660(Ceiling opening)
517
461
517
585~660(Ceiling opening)
523
570
570
319
Unit:mm
Panel size : 620 X 620 mm
600(Ceiling opening)
517
461
517
600(Ceiling opening)
523
570
570
319
THE INDOOR UNIT INSTALLATION
Position of Suspension Bolt Ceiling Cassette Type

16
THE INDOOR UNIT INSTALLATION
ENGLISH
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling
board
150 mm
Ceiling board
Ceiling
Keep the
length of the
bolt from
the bracket
to 40 mm
Open the ceiling board
along the outer edge of the
paper model
Air Conditioner body
Keep the length of 15~18 mm
between the air conditioner
bottom surface and the ceiling
surface
Adjust the
same height
Flat washer for M10
(accessory)
Flat washer for M10
(accessory)
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
* The feature can be changed according to
type of model.
Ceiling Concealed Duct Type - Mid
static
- Apply a joint-canvas between the unit and
duct to absorb unnecessary vibration.
- Apply a filter Accessory at air return hole.
C
E
G
D
A
J
B
Drainage hole
F
I
H
Inspection Port
Indoor Unit Ceiling
Canvas Duct
Air Intake Port Ceiling Board Ceiling Board
Air Discharge Port
Discharge
Flexible Duct
Intake
Duct
Dimension
Chassis
A B C D E F G H I J
M1 933.4 971.6 619.2 700 30 270 15.2 858 201.4 900
M2 1 283.4 1 321.6 619.2 689.6 30 270 15.2 1 208 201.4 1 250
(Unit: mm)

THE INDOOR UNIT INSTALLATION
17
ENGLISH
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.
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
- 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.
1 Set anchor
Old building New building
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
• Local supply
①Set anchor
②Plate washer - M10
③Spring washer - M10
④Nut - W3/8 or M10
⑤Suspension bolt - W3/8 or M10
CAUTION
• Tighten the nut and bolt top revent unit
falling.
!
CAUTION
1. Install declination of the indoor unit is
very important for the drain of the duct
type airconditioner.
2. Minimum thickness of the insulation
for the connecting pipe shall be 10
mm.
!
1~3 mm
Drainage hole Drainage hole
Safety drain hole Main drain hole

18
THE INDOOR UNIT INSTALLATION
ENGLISH
Heat Insulation
- Use the heat insulation material for the
refrigerant piping which has an excellent
heat-resistance (over 120 °C).
- Precautions in high humidity circumstance:
This air conditioner has been tested according
to the "KS Standard Conditions with Mist" and
confirmed that there is not any default.
However, if it is operated for a long time in high
humid atmosphere (dew point temperature:
more than 23 °C), water drops are liable to fall.
In this case, add heat insulation material
according to the following procedure:
- Heat insulation material to be prepared...
Adiabatic EPDM or NBR with thickness 10 to
20 mm.
- Stick glass wool on all air conditioners that are
located in ceiling atmosphere.
Indoor
unit
Thermal insulator
(accessory)
Fastening band
(accessory)
Refrigerant
piping
Maintenance
drain port
Upward
routing
not allowed
Pipe clamp
Indoor unit
300mm or less
Indoor Unit Drain Piping
- Drain piping must have down-slope (1/50 to
1/100): be sure not to provide up-and-down
slope to prevent reversal flow.
- During drain piping connection, be careful
not to exert extra force on the drain port on
the indoor unit.
- The outside diameter of the drain connection
on the indoor unit is 32 mm.
- Be sure to execute heat insulation on the
drain piping.
- Install the drain raising pipes at a right
angle to the indoor unit and no more than
300 mm from the unit.
Piping material: Polyvinyl chloride pipe
VP-25 and pipe fittings
Drain test
The air conditioner uses a drain pump to drain
water.
Use the following procedure to test the drain
pump operation:
- Connect the main drain pipe to the exterior
and leave it provisionally until the test comes
to an end.
- Feed water to the flexible drain hose and
check the piping for leakage.
- Be sure to check the drain pump for normal
operating and noise when electrical wiring is
complete.
- When the test is complete, connect the
flexible drain hose to the drain port on the
indoor unit.
Feed water
Drain Pump
Drain pan
Flexible drain hose
(accessory)
Main drain pipe
Glue the joint
Drain
port
Drain hose connection
Use the clip (accessory)
1/50~1/100 slope
Hanger
distance Hanger Bracket
Max 700 mm
Flexible drain hose
Insulation
Metal
clamp
Max 300 mm 1~15 m
CAUTION
The supplied flexible drain hose should
not be curved, neither screwed. The
curved or screwed hose may cause a
leakage of water.
!

WIRING CONNECTION
19
ENGLISH
Electrical Wiring
- All wiring must comply with local
requirements.
- Select a power source that is capable of
supplying the current required by the air
conditioner.
- Use a recognized circuit breaker between
the power source and the unit. A
disconnection device to adequately
disconnect all supply lines must be fitted.
- Capacity of circuit breaker recommended by
authorized personnel only.
Indoor unit
- Remove the control box cover for electrical
connection between the indoor and outdoor
unit.
- Use the cord clamp to fix the cable.
Outdoor unit
- Remove the control cover for wiring
connection.
- Use the cord clamp to fix the cable.
- Earthing work
Case 1 :Terminal block of Outdoor Unit have
mark.
Connect the cable of diameter 1.6 mm2or
more to the earthing terminal provided in the
control box and do earthing.
Case 2 :Terminal block of Outdoor Unit don't
have mark.
- Connect the cable of diameter 1.6 mm2or
more, to the panel of control box, marked as
and fasten with earth screw.
Outdoor
Indoor
Main
power source Switch box
Circuit Breaker
Cover control
Tubing Cover
Connecting cable
terminal
Power cord
terminal
Cord clamp
Capacity
(kBtu/h)
Phase(Ø) ELCB
24 1 25 A
36 / 48 1 40 A
WIRING CONNECTION
Remote
controller
cord
Connection cord
between the indoor
unit and the
outdoor unit Control box cover
(On which the Electric
Wiring Connection is put)
1
1
Control box
Control box cover
(On which the Electric
Wiring Connection is put)
Control terminal board
Remote controller cord
Connection cord between the indoor
unit and the outdoor unit
1
1

20
WIRING CONNECTION
ENGLISH
• The circuit diagram is not subject to
change without notice.
• Be sure to connect wires according to
the wiring diagram.
• Connect the wires firmly, so that not to
be pulled out easily.
• Connect the wires according to color
codes by referring the wiring diagram.
• The Power cable connected to the unit
should be selected according to the
following specifications.
Connecting cables to the Unit
- Connect the wires to the terminals on the
control board individually according to the
outdoor unit connection.
* Ensure that the color of the wires of
outdoor unit.
<Indoor>
* The figure can be changed according to
model.
<Outdoor>
Clamping of cables
- Arrange two power cables on the control
panel.
- First, fasten the clamp with a screw to the
inner boss of control panel.
- For connecting cable to the terminal block,
put the 1.0 mm2cable(thinner cable) on the
clamp and tighten it with a plastic clamp to
the other boss of the control panel.
- In Australia, the length of power supply cable
measured from the entry of the power
supply cable to the middle of live pin on the
power plug should be over 1.8 m.
• Make sure that the screws of the
terminal fixed tightly
• Installation work must be performed in
accordance with the national wiring
standards by authorized personnel only
• Supply cable of parts of appliance for
outdoor use shall not be lighter than
polychloroprene sheathed flexible cord
(code designation 60245 IEC 57) or
complied with HD 22.4 S4
• If the supply cable is damaged, it must
be replaced by a special cord or
assembly availible from the
manufacturer of its service agent.
GN/YL
20 mm
35±5 mm
10±3 mm
Capacity
(kBtu/h) Phase(Ø) Area (mm2)
24 / 36 / 48 1 6
1(L) 2(N) 3
Connected to outdoor
unit or B.D. unit.
1(L) 2(N) 1(L) 2(N) 3
POWER SUPPLY TO INDOOR UNIT
CAUTION
!CAUTION !
CAUTION
!