LG AT-C186PLE1 User manual

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INSTALLATION MANUAL
AIR
CONDITIONER
*MFL63260113*
Rev. : 01(05T15)
*Please read this installation manual completely before installing
the product.
* Installation work must be performed in accordance with national wiring
standards by authorized personel only.
* Please retain this installation manual for future reference after read it
throughly.
ENGLISH
TYPE : CEILING CASSETTE AIR CONDITIONER

2Ceiling Cassette Air Conditioner
Cassette Type Air Conditioner Installation Manual
TABLE OF CONTENTS
Important Safety Instructions.......3
Introduction........................................5
Symbols used in this Manual..........5
Features ...........................................5
Installation........................................6
Installation Tools...............................6
Selection of the best location.......7
Ceiling opening dimension and
hanging bolt location.......................10
The Indoor Unit Installation ..........11
Remote Controller Installation.....12
•
Connecting cable
• Pipes: Gas side
Liquid side
• Hanging Bolt
(W 3/8 or M10 length 650mm)
• Insulated drain hose
• Additional Drain hose
(Inner Diameter.............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
Remote ControlPreperation.........12
Wiring Connection.......................13
Electrical Wiring...........................14
Connection the cable to
Outdoor Unit................................14
Connection Pipes to the
Indoor Unit...................................15
Installation of Decorative Panel...17
Indoor Unit Drain Piping..............18
Test running................................20
Installation Instruction..................22
Installer Setting - Setting Address
of Central Contral.........................24

Installation Manual 3
Important Safety Instructions
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 unqualied persons can result in hazards to you and others.
•
The product shall be installed according to the wiring regulations of the corresponding country.
• The information contained in the manual is intended for use by a qualied 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 mal-
function, property damage, personal injury and/or death.
Installation
• Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box
cover are removed or opened.
- it may cause re, electric shock, explosion or death.
• Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
- There is risk of re or electric shock.
• For electrical work, contact the dealer, seller, a qualied electrician, or an Authorized Service Center.
- Do not disassemble or repair the product. There is risk of re or electric shock.
• Always ground the product.
- There is risk of re or electric shock.
• Install the panel and the cover of control box securely.
- There is risk of re or electric shock.
• Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause re or electric shock
• Use the correctly rated breaker or fuse.
- There is risk of re or electric shock.
• Do not modify or extend the power cable.
- There is risk of re 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 ns on the con-
denser and evaporator.
• For installation, always contact the dealer or an Authorized Service Center.
- There is risk of re, 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.
!
!
!
Important Safety Instructions

4Ceiling Cassette Air Conditioner
Important Safety Instructions
• 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.
• 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.
Operation
• Do not store or use flammable gas or combustibles near the product.
- There is risk of fire or failure of product.
CAUTION
Installation
• 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.
!

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
Wireless Remote Controller
Installation Manual 5

Installation
Installation
Installation Tools
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Ohmmeter
Hexagonal wrench
Ampmeter
Gas-leak detector
Thermometer,
Horizontal meter
Flaring tool set
Manifold gage Vacuum pump
Name
6Ceiling Cassette Air Conditioner

Installation
Selection
of thebest location
1) Indoor unit
•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.
2) Outdoor unit
•If an awning is built over the unit to prevent direct sunlight or rain exposure, be careful that
heat radiation from the condenser is not restricted.
•There should not be any animals or plants which could be affected by hot air discharged.
•Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.
Unit:cm
Ceiling
Ceiling Board
Ceiling Board
At least 180
360 or less
001
eromro
50 or
more
50 or
more
sselro03
Floor
More than
30cm
ecneF ro
selcatsbo
More than 70cm
More than 50cm
More than
30cm
More than
30cm
foornuS
More than 50cm
(Service space)
More than
30cm
ecneF ro
selcatsbo
More than 70cm
More than 50cm
More than
30cm
More than
30cm
foornuS
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.
Bolt Tubing connection
10 or more
Installation Manual 7

Installation
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.
3. 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.
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
4) Installation guide at the seaside
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.
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
3) Select a well-drained place.
• 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.
Sea wind Sea wind
Sea wind
Windbreak
CAUTION
8Ceiling Cassette Air Conditioner

Installation
5) Piping length and the elevation
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
CAUTION:
•Rated performance for refrigerant line length of:7.5m
•Capacity is based on standard length and maximum allowance length is on the
basis of reliability.
•Improper refrigerant charge may result in abnormal cycle.
•Oil trap should be installed every 10 meters.
4
Extra refrigerant = (Extended length - Rated length) x Additional refrigerant.
Gas Liquid Standard Max. Standard Max.
Model Name
AT-C308PLE0 5/8"
(15.88mm)
3/8"
(9.52mm) 7.5 50 5
AT-C368NLE0 5/8"
(15.88mm)
3/8"
(9.52mm) 7.5 50 5 30
Pipe Size Length (m) Elevation (m) *Additional
(Diameter:Ø)
refrigerant(g/m)
30
AT-C488MLE0 (15.88mm)
5/8" 3/8"
(9.52mm) 7.5 50 5 30
25
25
25
AT-C246PLE0
AT-C186PLE0
5/8"
(15.88mm)
1/2"
(12.70mm)
3/8"
(9.52mm)
1/4"
(6.35mm)
7.5 30 5
7.5 30 5
20
20
20
AT-C186PLE1
5/8"
(15.88mm)
3/8"
(9.52mm) 7.5 30 5 20 20
20
AT-C548MLE0
Installation Manual 9
(19.05mm)
3/4" 3/8"
(9.52mm) 7.5 50 5 30 25

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.
•Horizontally 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
capacity.
Cooking table
Air conditioner
Take enough
distance
875(Ceiling opening)
787(Hanging bolt)
684
(Hanging bolt)
671
875(Ceiling opening)
840 Unit size
840 Unit size
10 Ceiling Cassette Air Conditioner

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
Indoor Outdoor
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling board
mm051
Adjust the same height
Ceiling board
Ceiling
Flat washer for M10
(accessory)
Keep the length of the bolt
from the bracket to 40mm
Open the ceiling board
along the outer edge of the
paper model
Flat washer for M10
(accessory)
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
such 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 to
see. (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
cables (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.
Slope gradient for
drain Should be
1/50 ~ 1/100
Installation Manual 11

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.
HOW TO MOUNT ONTO A WALL
HOW TO INSERT BATTERIES
•Do not use rechargeable
batteries, such batteries differ
from standard dry cells in
shape, dimensions, and
performance.
•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
Remote Control Preparation
12 Ceiling Cassette Air Conditioner

Installation
Cord, clip
Wiring Connection
1 ,220 240V , 50Hz
WARNING: Make sure that the screws of the terminal are free from
looseness.
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).
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).
CAUTION
mm2.5
20mm
LY/NG
m0.75m
20mm
LY/NG
Ø
Open the control box cover and connect the remote control cord and Indoor power wires.
Wired Remote
Controller Cord
(there is no need
in case ofWireless
Remote Controller)
Control box cover
(Onwhich the Electric
Connection cord Wiring
Connection is put)
Connection
cord between the
indoor unit and
the outdoor unit
Installation Manual 13
1(L) 2(N)
Connected to indoor unit
1(L) 2(N) 1(L) 2(N) 3
outdoor unit
Main
Terminal Block Indoor
1(L) 2(N)
Connected to indoor unit
outdoor unit
Main
(R) (S) (T) (N ) 1(L) 2(N) 4 5
3 ,380 415V ,50HZ
Ø
3
AT-C186PLE1
AT-C186PLE0 AT-C186PLE0
AT-C246PLE0
AT-C308PLE0
AT-C368NLE0
AT-C488MLE0
AT-C548MLE0
2.5 mm2
Terminal Block Indoor
3
AT-C186PLE1
AT-C246PLE0
AT-C308PLE0
AT-C368NLE0
AT-C488MLE0
AT-C548MLE0
0.75 mm
2
3

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.
Check 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
screw.
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
screw.
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
14 Ceiling Cassette 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
distance.
•Cut the ca ble 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 possi ble to put them on after flaring
work)
4) Flaring work
•Carry out flaring work using flaring tool as
shown below.
Firmly 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
Cracked 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
Ø19.05 3/4 0.8~1.0
Installation Manual 15

Installation
1. Form the piping according to its routing. Avoid bending
and bending back the same piping point more than three
times. (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
firmly with wrenche s.
3. Connect pipe to the se rvice valve or ball valve which is
located below the outdoor unit.
4. After completing the piping connection, be sure to che ck
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 car ried out using the se rvice
ports of both the liquid and gas side valves.
CAUTION: Use two wrenches and
tighten with regular torque.
Outdoor
un i t
Liquid side
Flare connection
Flare connection
Gas side
Indoor
unit
Union
Flare nut fastening torque
Ø6.35mm 1.8 kg.m
Ø9.52mm 4.0 kg.m
Ø12.7mm 5.5 kg.m
Ø15.88mm 6.6 kg.m
Ø19.05mm 6.6 kg.m
• Piping Connection
• Vacuum drying
air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.
WARNING
Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress
- There is the risk of death, injury, fire or explosion.
16 Ceiling Cassette Air Conditioner

Installation
Installation of Decorative Panel
The decorative panel has its installation
direction.
B efore ins talling the decorative panel,
always remove the paper template.
1Remove the packing and take out air inlet
grille from front panel.
Front
grille
2Remove the Corner covers of the panel.
Coner
cover
3Fit the panel on the unit by inserting hooks
as shown in picture.
4Insert two screws on diagonal corners of
panel. Do not tighten the bolts completely.
(The fixing screws are included in the
indoor unit box.)
Check the alignment of panel with the ceil-
ing. Height can be adjusted using hanging
bolts as shown in picture. Insert the other
two screws and tighten all screws com-
pletely.
5Fit the corner covers.
6Open two screws of control panel cover.
Screw
7Connect one display connector and two
vane control connectors of front panel to
indoor unit PCB.
The position marking on PCB is as:
Display connector : CN-DISPLAY
Vane control connector: CN-VANE 1,2
8Close the cover for control box.
9Install the air inlet grille and Filter on the
panel.
Installation Manual 17
CN-VANE 1,2 CN-DISPLAY

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 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
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.
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
18 Ceiling Cassette 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
hose, the end of the drain-outlet should keep
distance from the ground. (Do not dip it into
water, and 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
below 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 19

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
prevent water from entering into the room.
4. Fix the pipings onto the wall by saddle or
equivalent.
In case of the Outdoor Unit being
installed above position of the Indoor
Unit.
Seal a small opening
around the pipings
with gum type sealer.
Trap
1) PRECAUTIONS IN TEST RUN
•The initial power supply must provide at least 90% of the rated voltage.
Otherwise, 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
(refrigerant 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
20 Ceiling Cassette Air Conditioner