LG Cassette Type
Air Conditioner
INSTALLATION MANUAL
LG
IMPORTANT
• Please read this installation manual completely before
installing
the product.
• When the power cord is damaged, replacement work shall
be
performed by authorized personnel only.
• Installation work must be performed in accordance with
the
national wiring standards by authorized personnel
only.
• Please retain this installation manual for future reference
after
reading it thoroughly.
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2 Cassette Type Air Conditioner
Cassette Type Air Conditioner Installation Manual
TABLE OF CONTENTS
Safety Precautions............................3
Int
roduction........................................6
Symbols
used in this Manual..........6
Features...........................................6
Installatio
n ..........................................7
Installation
Tools...............................7
Installation of Indoor, Outdoor
Unit
.................................................8
Test running
.................................23
Optional operation
....................25
•
Connecting cable
•
Pipes: Gas side
Liquid
side
•
Hanging Bolt
(W
3/8 or M10 length 650mm)
•
Insulated drain hose
•
Additional Drain hose
(Inner
Dia.............32mm)
•
Horizontal meter
•
Screw driver
•
Electric drill
•
Hole core drill (ø70mm)
•
Flaring Tools set
•
Torque Wrenches
•
Hexagonal Wrench (4mm, 5mm)
•
Gas-leak detector
•
Owner’s Manual
•
Installation Manual
•
Thermometer
• •
Manifold gage
• •
Vacuum pump
Installation
Requirements
Required Parts Required Tools
Installation Manual 3
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
•
Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness
is
classified by the following indications.
• Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
Be sure not to do.
Be
sure to follow the instruction.
Safety Precautions
• Installation
Install the panel and the cover of
cont
rol box securely.
• There is risk of fire or
elect
ric shock.
Always install a dedicated
ci
rcuit and breaker.
• Improper wiring or
installation
may cause fire or
elect
ric shock
Use the correctly rated breaker
or
fuse.
• There is risk of fire or
elect
ric shock.
Do not use a defective or
underrated
circuit breaker. Use
this
appliance on a dedicated
ci
rcuit.
• There is risk of fire or
elect
ric shock.
For electrical work, contact the
deale
r, seller, a qualified
electrician
, or an Authorized
Service Center.
•
Do not disassemble or repair
the
product. There is risk of
fire
or electric shock.
Always ground the product.
• There is risk of fire or
elect
ric shock.
4 Cassette Type Air Conditioner
Safety Precautions
Do not modify or extend the power cable.
• There is risk of fire or electric shock.
Be cautious when unpacking and installing the
product.
•
Sharp edges could cause injury. Be especially
careful
of the case edges and the fins on the
condenser
and evaporator.
For installation, always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock, explosion,
or
injury.
Do not install the product on a defective
installation
stand.
• It may cause injury, accident, or damage to
the
product.
Be sure the installation area does not
deteriorate
with age.
•
If the base collapses, the air conditioner could fall with
it,
causing property damage, product failure, and
personal
injury.
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
fu
rniture.
Do not store or use flammable gas or combustibles
near
the product.
• There is risk of fire or failure of product.
• Operation
n
i
l
o
s
a
G
Installation Manual 5
Safety Precautions
Always check for gas (refrigerant) leakage after
installation
or repair of product.
• Low refrigerant levels may cause failure of
product.
Install the drain hose to ensure that water is
drained
away properly.
• A bad connection may cause water leakage.
Keep level even when installing the product.
• To avoid vibration or water leakage.
Do not install the product where the noise or hot air
from the outdoor unit could damage the
neighborhoods.
• It may cause a problem for your neighbors.
Use two or more people to lift and transport the
product.
• Avoid personal injury.
Do not install the product where it will be
exposed to sea wind (salt spray) directly.
• It may cause corrosion on the product.
Corrosion,
particularly on the condenser and
evaporator fins, could cause product
malfunction
or inefficient operation.
• Installation
90˚
6 Cassette Type Air Conditioner
Introduction
This symbol alerts you to the risk of electric shock.
This
symbol alerts you to hazards that may cause harm to the
air
conditioner.
This
symbol indicates special notes.
NOTICE
Introduction
Symbols used in this Manual
Features
Anti-bacteria filter
Air
Intake
Air Outlet
Installation
Installation Tools
Installation
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Name
Ohmmeter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Horizontal meter
Flaring tool set
R-22
Manifold gag
e Vacuum pump
Installation
Manual 7
Installation
More than
30cm
More than
30cm
Installation of Indoor, Outdoor Unit
Selection of the best location
1) Indoor unit
• There should not be any heat source or steam
the unit.
near
• There should not be any obstacles to prevent
air circulation.
the
• A place where air circulation in the room will
good.
be
• A place where drainage can be easily
obtained.
• A place where noise prevention is taken into
ration.
conside
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows from
wall, ceiling, or other obstacles.
the
• The indoor unit must keep the maintenance
e.
spac
2) Outdoor unit
• If an awning is built over the unit to prevent
radiation from the condenser is not
heat
• There should not be any animals or plants
• Ensure the spaces indicated by arrows from
rest
direct
ricted.
which
the
Ceiling
Ceiling Board
50 or
more
sunlight or rain exposure, be careful that
could be affected by hot air discharged.
wall, ceiling, fence or other obstacles.
er
o
Ceiling Board
m ro 03
s
s
e
r
om ro
001
052
e
v
ob
A
Floor
50 or
sse
more
l r
o 004
el ro 03
Unit:cm
More than
30cm
o
uS
n
r
o
o
f
More than
F
cne
e
b
o
s
t
r
ca
l
e
s
More than
30cm
30cm
More than 50cm
More than 70cm
More than
30cm
F
e
o
b
s
n
c
t
a
3) Settlement of outdoor unit
• Anchor the outdoor unit with a bolt and nut(ø10mm)
tightly and horizontally on a concrete or rigid mount.
• When installing on the wall, roof or rooftop, anchor the
mounting base securely with a nail or wire assuming the
influence of wind and earthquake.
• In the case when the vibration of the unit is conveyed to
the hose, secure the unit with an anti-vibration rubber.
8 Cassette Type Air Conditioner
S
u
n
r
o
o
f
More than
More than
30cm
e
o
r
c
l
e
s
30cm
More than 50cm
More than 70cm
Bolt
More than 50cm
rvice space)
(Se
Tubing connection
Installation
Installation
Manual 9
4) Installation guide at the seaside
CAUTION
1.
Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2. 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
3.
needs additional anticorrosion treatment on the heat exchanger.
4.1 Selecting the location(Outdoor Unit)
1) 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.
Sea wind Sea wind
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
Windbreak
Sea wind
3) Select a well-drained place.
1.
If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.
2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
• 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.
• It should be keep more than 70 cm of space
between outdoor unit and the windbreak for easy
air flow.
Installation
Cassette Type Air Conditioner
10
5) Piping length and the el e v ation
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
Oil trap
If piping length is more than 5m
Outdoor unit
Indoor unit
B
C A UTION:
• Rated per f ormance f or refri g erant line length of:7.5m
• Capacity is based on standa r d length and maxi m um all o wance length is on the
basis of reliabilit y .
• Imp r oper refri g erant c ha r g e m a y result in abnormal c y c l e .
• Oil trap should be installed e ve r y 10 mete r s.
Capacity
HT-C186HLA1
HT-C246HLA1
HT-C306HLA0
HT-C306HLA1
HT-C368DLA0
HT-C368DLA1
HT-C488DLA0
HT-C488DLA1
Pipe Size
(Diameter: Ø )
Gas Liquid Standard Max. Standard Max.
1/2"
(12.70mm)
5/8"
(15.88mm)
5/8"
(15.88mm)
5/8"
(15.88mm)
5/8"
(15.88mm)
5/8"
(15.88mm)
3/4"
(19.05mm)
3/4"
(19.05mm)
1/4"
(6.35mm)
1/4"
(6.35mm)
1/4"
(6.35mm)
1/4"
(6.35mm)
1/4"
(6.35mm)
1/4"
(6.35mm)
3/8"
(9.52mm)
3/8"
(9.52mm)
Length (m) Elevation (m)
7.5 30 5
7.5 30 5
15
15
7.5 30 5
7.5 50 5
7.5 30 5
7.5 50 5
7.5 30 5
7.5 50 5
*Additional
refrigerant(g/m)
25
30
15
40
15 40
15
40
15 40
15
60
15
60
Extra refrigerant = (Extended length - Rated length) x Additional refrigerant.
4
11Installation Manual
Installation
• 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.
CAUTION:
•
This air-conditioner uses a drain pump.
• Horizontly install the unit using a
level gauge.
•
During the installation, care should be
taken
not to damage electric wires.
• Thoroughly study the following installation locations:
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour
adhere
to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat
exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc.
In
these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has
sufficient
capacity so that it draws oily steam which should not flow into the suction of the
air
conditioner.
• Make enough distance from a cooking room to install the air conditioner in such a place
where it may not suck in oily steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is
in suspension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
NOTICE
Ceiling opening dimensions and hanging bolt location
• The dimensions of the paper model for installing are
the same as those of the ceiling opening dimensions.
Ceiling board
Level gauge
Ceiling
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacit
y.
Cooking ta
ble
Air conditioner
Take enough
distance
810
785
Hanging bolt
tlob gnignaH
30
30
276
018
03
0
3
840
048
Unit : mm
e
z
is
t
inU
Unit size
Cassette Type Air Conditioner
12
Installation
The Indoor Unit Installation
• The following parts is option.
Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
• Drill the piping hole on the wall slightly tilted to the
outdoor
side using a Ø 70 hole-core drill.
Wall
m
m
7~
5
Indoor Outdoor
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling board
m
m0
5
1
Adjust the same height
Ceiling board
Ceiling
Flat washer for M10
(accesso
ry)
Keep the length of the bolt
from the b
racket to 40mm
Open the ceiling board
along the outer edge of the
paper model
Flat
washer for M10
(accesso
ry)
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Air Conditioner body
CAUTION:
Tighten the nut and
bolt
to prevent unit falling.
Remote Controller Installation
• Although the room temperature sensor is in the indoor unit, the remote controller should be installed in
su
ch places away from direct sunlight and high humidity.
Installation
of the remote controller
• Select places that are not splashed with water.
• Select control position after receiving customer approval.
• The room temperature sensor is built in the indoor unit.
• This remote controller equipped with liquid crystal display. If this position is higher or lower, display is difficult to
se
e.(The standard height is 1.2 ~ 1.5m high)
Routing
of the remote controller cord
• Keep the remote controller cord away from the refrigerant piping and the drain piping.
• To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power
ca
bles (audio equipment, television set, etc.)
• If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water
droplets
from running.
13Installation Manual
Installation
1. Remove the battery cover from the remote controller.
• Slide the cover according to the arrow direction.
2. Insert the two batteries.
• Be sure that the (+) and (-) directions are correct.
• Be sure that both batteries are new.
3. Re-attach the cover.
• Slide it back into position.
• Fix the under plate on the wall
• Separate the under plate from Remote control box.
• Fix the cord clamps on the wall by
ø 3 tapping screws (accessory).
• Fix the remote control cord.
Remote control
box body
Cord clamp
(accesso
ry)
Lever carefully
the b
ox open
using a screw
driver, etc.
Front case
t
r
a
p
r
e
w
o
l
e
h
T
Face of wall
Under plate
Scr
ew (accessory)
WIRED REMOTE CONTROL INSTALLATION
REMOTE CONTROL PREPARATION
DISASSEMBLING
ELECTRICAL WIRING
HOW TO MOUNT ONTO A WALL
HOW TO INSERT BATTERIES
Wire and make sure that teminal
numbers are matched on unit side and
remote controller side.
The maximum length of the cord is 100m.
If the length of the cord
exceeds 50m,
use a wire si
ze greater than 0.5mm2.
Remote controller
(Main board)
CN REMO
• Do not use rechargeable
batte
ries, such batteries differ
from
standard dry cells in
shap
e, dimensions, and
per
formance.
• Romove the batteries from the
remote
controller if the air
conditioner
is not going to be
used
for some long time.
HOW TO INSERT BATTERIES
Cassette Type Air Conditioner
14
Installation
Cord, clip
Wiring Connection
Open the control box cover and connect the remote control cord and Indoor power wires.
Indoor
Power cord
Remote
Controller cord
evention
Fire pr
cover
Connector
guide c
over
Fire pr
evention cover
fitting screw(1 unit)
Connector guide c
fitting screw(2 units)
over
Terminal Block in Indoor
1(L
) 2(N) 3 4
Connected to indoor unit
1(L) 2(N) 3(L) 4(N) 5 6 7 8
outdoor unit
Main
1 ,220V , 50Hz
Ø
1(R) 2(S) 3(T) 4(N ) 6(L) 7(N) 8 9
Main
Ø
3 ,380V ,50HZ
1(L
outdoor unit
Terminal Block in Indoor
) 2(N) 3 4
CAUTION
The power cord connected to the outdoor unit
should be complied with the following specifications
(Rubber insulation, type H05RN-F approved by HAR
or SAA).
mm5
.
8
G
N
/
Y
L
2
0
Capacity 1 Phase 3 Phase
18k/24k/30k
BTU/h
36k BTU/h
48k
m
m
BTU/h
2.5mm
-
-
2
2.5mm
3.5mm
If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer
or its service agent.
The connecting cable connected to the indoor and
outdoor unit should be complied with the following
specifications (Rubber insulation, type H05RN-F
approved by HAR or SAA).
-
2
2
G
N
/
Y
mm
L
5
.7
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
2
0
m
m
1.25mm2 (48K)
2
(18K/24K/36K)
Connected to indoor unit
WARNING: Make sure that the screws of the terminal are free from
looseness.
Installation Manual 15
Installation
1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport.
Che
ck the screws for loose connection.
(Running
the air conditioner with loose connection can overload and damage electrical components.)
5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.
Main power source
Switch box
Refrigerant pipe
Circuit Breaker
Use circuit breaker or time delay fuse.
ELECTRICAL WIRING
CONNECTING THE CABLE TO OUTDOOR UNIT
1. Remove the Cover control from the unit by loosening a
scr
ew.
Connect
the wires to the terminals on the control board
individually
as following.
2. Secure the cable onto the control board with the holder
(clamper).
3. Refix the cover control to the original position with the
scr
ew.
4. Use a recongnized circuit breaker 20A between the
power source and the unit. A disconnection device to
adequately
disconnect all supply lines must be fitted.
Outdoor unit
Terminal block
Connecting
cable
Cover control
Holder for
connecting
cable
Over 5mm
Holder for
power supply
cord
Power supply
cord
16 Cassette Type Air Conditioner
Installation
• Preparation of Piping
Connecting
Pipes to the Indoor Unit
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the
following procedure.
1) Cut the pipes and the cable.
• Use the accessory piping kit or the pipes
purchased
locally.
• Measure the distance between the indoor and
the
outdoor unit.
• Cut the pipes a little longer than measured
distanc
e.
• Cut the cable 1.5m longer than the pipe
length.
2) Burrs removal
• Completely remove all burrs from the cut
cross
section of pipe/tube.
• Put the end of the copper tube/pipe to
downward direction as you remove burrs in
order
to avoid to let burrs drop in the tubing.
3) Putting nut on
• Remove flare nuts attached to indoor and
outdoor
units, than put them on pipe/tube
having completed burr removal.
(Not
possible to put them on after flaring
work)
4) Flaring work
• Carry out flaring work using flaring tool as
sh
own below.
Fi
rmly hold copper tube in a bar(or die) as
indicated
dimension in the table above.
5) Check
• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the
flared
section and do flaring work again.
Copper
tube
90°
Slanted Uneven Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shining without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracke
d Uneven
thickness
= Improper flaring =
Outside diameter A
mm inch mm
Ø6.35 1/4 0.5~0.8
Ø9.52 3/8 0.5~0.8
Ø12.7 1/2 0.5~0.8
Ø15.88 5/8 0.8~1.0
Ø19.0
5 3/4 0.8~1.0
Installation Manual 17
Installation
1. Form the piping according to its routing. Avoid bending
and
bending back the same piping point more than three
time
s. (This will result in hardening the pipe.)
2. After deforming the piping, align centers of the union
fitting
of the indoor unit and the piping, and tighten them
fi
rmly with wrenches.
3. Connect pipe to the service valve or ball valve which is
located
below the outdoor unit.
4. After completing the piping connection, be sure to check
if
there is gas leakage in indoor and outdoor connection.
After
completing the piping connection, execute vacuum
drying for the connecting piping and the indoor unit.
The
vacuum drying must be carried out using the service
po
rts of both the liquid and gas side valves.
CAUTION: Use two wrenches and
tighten
with regular torque.
Ou td oo r
un it
Liquid side
Flare connection
Flare connection
Gas side
Indoor
unit
Union
Flare nut fastening torque
Ø6.35m
m 1.8 kg.m
Ø9.52m
m 4.0 kg.m
Ø12.7m
m 5.5 kg.m
Ø15.88m
m 6.6 kg.m
Ø19.05m
m 6.6 kg.m
Piping Connection
Vacuum drying
Model Liquid side piping Gas side piping
18k Btu/h
Ø 6.35mm Ø12.70mm
24k, 30k, 36k Btu/h
48k Btu/h Ø 9.52mm Ø19.05mm
Ø 6.35mm Ø15.88mm
18 Cassette Type Air Conditioner
Installation
Installation of Decorative Panel(Elevation Grille)
1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body.
(Tighten by amount 10mm in length.)
The fixing screws (hexagon M5 screw) are included unit box.
2. Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decorative panel key hole ( ) on the screws fixed in step above, and slide the panel
so that the screws reach the key hole edge.
4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5. Connect the louver motor connector display connector, elevation grille connector and power supply
connector
6. After tightening these screws, install the air inlet grille (including the air filter).
Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10mm)
Control box cover
Piping side
Louver motor
Decorative panel fixing screws
(Hexagon M5 screw)
Air conditioner unit
Decorative panel
Key holes
Inlet grille
Display
The decorative panel has its
installation
direction.
Before installing the decorative panel,
always remove the paper template.
Installation Manual 19
Elevation Grill (Remote Controller_Accessory)
• How to Use Remote Controller
• Main Components of Lift Grill
As for operation of Remote Controller, use it by
directing
the transmitter part of Remote Controller
to
the receiver part of front panel directly under
front
panel.
• Do not drop it down or into water. Or else there is
worry about trouble failure.
• Do not press hard the Remote Controller button
with
nail (ballpoint pen or other sharp substance).
Or
else there is worry about trouble failure.
• In case when obstacle such as curtain hides the
signal
reception part of receiver in between the
space
interval, Remote Controller operation is
in
feasible.
Lift grill front panel assembly
Bolts for installation (4 EA, P/No. 3A00255K)
Instruction manual
Remote Controller for lift grill
Ascend
Signal t
ransmitter
Descend
Stop
Installation
20 Cassette Type Air Conditioner
If you want to change automatic distance
setting,
consult with your sale agency.
Automatic Stop Distance of Grill
Ceiling height
Low Medium High
(
Height:3~4 m)
Automatic stop
1.5±0.5 m 2.5±0.5 m 3.5±0.5 m
distance
- Depress the down button( ).
Then
suction grill descends and stops automatically at a
ce
rtain distance.
- You may stop it at wanted distance point by depressing
the
stop button ( ) when descending.
- Depress the up button( ).
Then
suction grill goes up and enters into the front panel.
1. Stop the Air Conditioner Operation
.2. Descend the Suction Grill
3. Raise the Suction Grill
- Depress the stop button( ).
Ma
ke use of this when you want to stop it at your wished
position.
4. Stop the Suction Grill during Rising
• Always stop the air conditioner operation for safety before operating lift grill.
• Take heed _ there is worry about dust fall etc. when suction grill descends.
• In case when the set automatic stop distance goes wrong, check the set value of operation
panel and confirm if there is neither obstacle nor mankind.
• When you are not to remove obstacle, stop the operation before touching the obstacle.
• How to Operate the Lift Grill
• Don't lay any material upon suction grill.
• Suction grill comprises 2 strands of wire. If any substance is placed on it then balance may be
destroyed so that the substance would drop down and cause a breakage or damage. Also the
matter may cause trouble owing to which the grill would not be correctly inserted at front panel.
• Don't shake suction grill. Or else there is worry that it may collide with adjacent material and the
suction grill fall down.
• Don't pull suction grill. Don't draw out suction grill irrationally. Or else there is worry that lift grill
drive part is damaged and suction grill might drop down.
• Don't place obstacle in lift passage of lift grill.
When suction grill descends, it automatically stops at a certain distance.
If there is any obstacle in lift passage, suction grill might drop down and there may be caused
trouble failure of lift grill drive part.
• Turn off the air conditioner operation button before operating the lift grill.
Always stop the air conditioner operation for safety when suction grill descends.
• Don't damage lift rope by a sharp material. Or else there is worry about suction grill dropping
because of rope cutoff.
Installation
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Installation Manual 21
Installation
CAUTION: Install certainly the decorative panel.
Cool
air leakage causes sweating. Water drops fall.
Air conditioner
unit
Ceiling
board
Decorative panel
Decorative
panel
Fit the insulator (this part) and
be careful for cool air leakage
Good example
Air
Cool air leakage
(no good)
Bad example
Ceiling
board
Air conditioner 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)
Maintenance
drain port
Upward
routing
not allowed
Pipe clamp
Indoor unit
1/50~1/100
MAX 700mm
1/50~1/100
MAX 700mm
Flexible drain hoseFlexible drain hoseFlexible drain hose
CAUTION:
The supplied flexible
drain
hose should not be curved,
neither
screwed. The curved or screwed
hose
may cause a leakage of water.
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
leakag
e.
• 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.
Heat
insulation material: Polyethylene foam with thickness more than 8 mm.
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 32mm.
• Be sure to execute heat insulation on the drain piping.
Drain test
Piping material: Polyvinyl chloride pipe VP-25
and
pipe fittings
22 Cassette Type Air Conditioner
Installation
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance
(over 120°C).
2. 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 glass wool with thickness 10 to 20mm.
• Stick glass wool on all air conditioners that are located in ceiling atmosphere.
• In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas
piping
: thick piping) and drain piping, add further 10mm to 30mm thickness material.
Indoor unit
Thermal insulator
(accessory)
Fastening band
(accessory)
Refrigerant piping
HEAT INSULATION
1. Wrap the connecting portion of indoor
unit
with the Insulation material and
secure
it with two Plastic Bands. (for the
right
pipings)
• If you want to connect an additional drain
hos
e, the end of the drain-outlet should keep
distance
from the ground. (Do not dip it into
water, and fix it on the wall to avoid swinging
in
the wind.)
2. Tape the Pipings, drain hose and
Connecting
Cable from bottom to top.
3. Form the pipings gathered by taping
along
the exterior wall and fix it onto the
wall
by saddle or equivalent.
In case of the Outdoor unit being installed
bel
ow position of the Indoor unit.
FORM THE PIPINGS
Trap is required to prevent water from entering
into electrical parts.
Seal a small opening
around the pipings
with gum type sealer.
Taping
Drain hose
Pipings
Connecting
cable
Plastic Band
Power supply
cord
Installation Manual 23
Installation
2. Tape the Pipings and Connecting cable
from bottom to top.
3. Form the pipings gathered by taping along
the
exterior wall, and make the trap
pr
event water from entering into the room.
4. Fix the pipings onto the wall by saddle or
equi
valent.
In case of the Outdoor Unit being
installed
above position of the Indoor
Unit.
1) PRECAUTIONS IN TEST RUN
• The initial power supply must provide at least 90% of the rated voltage.
Otherwis
e, the air conditioner should not be operated.
CAUTION:
For test run, carry out the cooling operation firstly even during heating season. If heating
operation
is carried out firstly, it leads to the trouble of compressor. Then attention must be paid.
Carry out the test run more than 5 minutes without fail.
(Test run will be cancelled 18 minutes later automatically)
• The test run is started by pressing the room temperature checking button and down timer button for 3
seconds
at the same time.
• To cancel the test run, press any button.
• After completing work, be sure to measure and record trial run properties, and store measured data, etc.
• Measuring items are room temperature, outside temperature, suction temperature, blow out temperature,
wind
velocity, wind volume, voltage, current, presence of abnormal vibration and noise, operating pressure,
piping
temperature, compressive pressure.
• As to the structure and appearance, check following items.
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETED
• •Is the circulation of air adequate?
• •Is the draining smooth?
• •Is the heat insulation complete
(ref
rigerant and drain piping)?
• •Is there any leakage of refrigerant?
• Is the remote controller switch operated?
• Is there any faulty wiring?
• Are not terminal screws loosened?
M4......118N
.
cm{12kgf.cm
} M5......196N
.
cm{20kgf.cm}
M6......245N
.
cm{25kgf.cm
} M8......588N
.
cm{60kgf.cm}
Test running
Seal a small opening
around the pipings
with gum type sealer.
Trap
24 Cassette Type Air Conditioner
Installation
Thermometer
2) Connection of power supply
1. Connect the power supply cord to the
independent
power supply.
• Circuit breaker is required.
2. Operate the unit for 15 minutes or more.
3) Evaluation of the performance
1. Measure the temperature of the intake
and
discharge air.
2. Ensure the difference between the intake
tempe
rature and the discharge one is
more
than 8°C.
Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning,
tempe
rature control, etc.).
HAND OVER
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1)
Never fail to have an individual power specialized for the air conditioner. As for the
method of wiring, be guided by the circuit diagram pasted on the inside of control box
cover.
2)
Provide a circuit breaker switch between power source and the unit.
3)
The screw which fasten the wiring in the casing of electrical fittings are liable to
come loose from vibrations to which the unit is subjected during the course of
transportation. Check them and make sure that they are all tightly fastened. (If they
are loose, it could give rise to burn-out of the wires.)
4)
Specification of power source
5)
Confirm that electrical capacity is sufficient.
6)
Be sure that the starting voltage is maintained at more than 90 percent of the rated
voltage marked on the name plate.
7)
Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8)
Never fail to equip a leakage breaker where it is wet or moist.
9)
The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking,
disturbance to the normal function of a overload protection device.
• Proper starting power is not given to the compressor.
Installation Manual 25
Installation
Two Thermistor System
(1) Open the rear cover of the wired remote-controller to set the mode.
(2)
Select one of three selectable modes as follows.
• Position 1:
The
room temperature is controlled by the thermistor of the main body.
• Position 2:
The
room themperature is controlled by the thermistor of the wired remote-controller, control the
tempe
rature according to the position of wired remote-controller.
• Position 3:
The
room temperature is controlled by lower temperature between the temperature of main body and of
remote-controller
sensor.
(3)
Move the slide switch to set position.
(4)
Close the rear cover and check if it works normally.
TH
R14H
SW TH
REMO
MAIN
2TH
OP7
R18H
R17H
OP6
LO
STAND
SW HIGH
HI
R03S
0
7
0
C
S
4
0
R
S2
0
R
R01S
OP3
OP
2 OP1
R19H
R11H
R13
H R12H
OP5R16
H OP4
R15H
CO1H
REMO
Room Temp. sensor
2TH
MAIN
Position 2
Position 1
Position 3
Slide switch for ceiling height
Slide
switch for 2 Thermistor
CAUTION:
• Select the position after counselling with a customer.
• In case of cooling mode, room temperature is controlled by the main
bo
dy sensor.
• To control the room temperature by a wired remote controller, install
cont
roller(room temp. sensor) to sense the temperature more
accurate
ly.
• Maunfactured in the position 3.
Optional Operation
26 Cassette Type Air Conditioner
Installation
Adjusting air volume to the height of ceiling
You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the
com
fortable atmosphere to consumers.
Procedure
1. Choose the selectable position in the table after measuring the height of ceiling.
2. In the case of changing the height as "high" or "low", open the rear cover of the wired remote-
controlle
r.
3. Move the slide switch to the set position.
4. Close the rear cover and check if it works nomally.
TH
R14H
SW TH
REMO
MAIN
2TH
OP7
R18H
R17H
OP6
LO
STAND
SW HIGH
HI
R03S
070
C
S4
0
R
S20R
R01S
OP3
OP
2 OP1
R19H
R11H
R13
H R12H
OP5R16
H OP4
R15H
CO1H
Lo
Hi
STAND
Slide
switch for ceiling height
Slide
switch for 2 Thermistor
Standard
(De
fault)
Low ceiling
High Ceiling
Ceiling height Mode of slide switch Change of air volume Remark
more
than 4.0m High Ceiling Increasing
3.2~4.0
m Standard -
less
than 3.2m Low Ceiling Decreasing
Maun
factured in
standard
mode
Installation Manual 27
Installation
CAUTION:
• Be careful not to exchange the color of wires.
• The maximum length of connecting wire should be below 200m(25Ω)
on
connecting each units.
• Use a wire more than 0.5mm
2
Group Control(Optional Wiring)
It operates maximum 16 Units by only one Wired Remote Controller, and each Unit starts sequentially to
pr
event overcurrent.
Operation unit
ZONE
12 3 4
Humidify
JET
AUTO
AUTO SWING OPERATION
FAN SPEED
Program set
SUB FUNCTION
SET TEMP
Room Temp
HI
MED
LO
Heater
Defrost
Filter
Preheat
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
Indoor Unit 1
Terminal(Local Supply)
Blo
ck
Terminal(Local Supply)
Blo
ck
Terminal(Local Supply)
Blo
ck
Main PCB
#1
Main PCB
#2
Main PCB
#16
Wired Remote Controller
(Standard)
Indoor Unit 2
Main PCB
Indoor Unit 16
Connector
RED(12V)
YL(SIGNAL)
BR(GND)
RED(12V)
YL(SIGNAL)
BR(GND)
YL(SIGNAL)
BR(GND)
Connecting Cable(Local Supply)
Connector Connector
....
....
YL(SIGNAL)
BR(GND)
YL(SIGNAL)
BR(GND)
YL(SIGNAL)
BR(GND)
Remote
Controller
PCB
Single
Group
Slide Switch2
• Using the supplied Wired Remote Controller, wire
them
like above.
• Move slide switch 2 to "Group" position.
• Ensure that the color of wire.
P/No.: 3828A20896 K
Printed in Thailand
After reading this manual, keep it in a place easily accessible to the user for future reference.
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