Samsung AR12TY5QAWKN, AR18TY5QAWKN User manual

Samsung AR12TY5QAWKN, AR18TY5QAWKN User manual
Table of Contents
Safety Precautions ...............................................................................05
User Manual
Unit Specifications and Features........................................................... 10
10
11
12
13
13
Care and Maintenance...................................................................... 14
Troubleshooting................................................................................. 16
1. Indoor unit display.........................................................................................................................
2. Operating temperature..................................................................................................................
3. Other features ..............................................................................................................................
4. Setting angle of airflow.................................................................................................................
5. Manual operation (without Remote)..............................................................................................
Installation Manual
Accessories.......................................................................................... 19
Installation Summary - Indoor Unit ................................................. 20
Unit Parts............................................................................................. 21
Indoor Unit Installation...................................................................... 22
22
22
23
24
24
25
26
27
Outdoor Unit Installation.........................................................................28
1. Select installation location..............................................................................................................28
2. Install drain joint............................................................................................................................29
3. Anchor outdoor unit......................................................................................................................29
4. Connect signal and power cables................................................................................................... 31
Refrigerant Piping Connection......................................................... 32
A. Note on Pipe Length.................................................................................................................... 32
B. Connection Instructions –Refrigerant Piping................................................................................. 32
1. Cut pipe................................................................................................................................. 32
2. Remove burrs......................................................................................................................... 33
3. Flare pipe ends....................................................................................................................... 33
4. Connect pipes........................................................................................................................ 33
Air Evacuation................................................................................... 35
1. Evacuation Instructions................................................................................................................ 35
2. Note on Adding Refrigerant......................................................................................................... 36
Electrical and Gas Leak Checks........................................................ 37
Test Run............................................................................................. 38
In using R-32 ..................................................................................... 39
1. Select installation location..............................................................................................................
2. Attach mounting plate to wall........................................................................................................
3. Drill wall hole for connective piping................................................................................................
4. Prepare refrigerant piping...............................................................................................................
5. Connect drain hose........................................................................................................................
6. Connect signal cable......................................................................................................................
7. Wrap piping and cables.................................................................................................................
8. Mount indoor unit.........................................................................................................................
Remote manual
Remote controller Specifications ...................................................... 43
Operation buttons ............................................................................. 44
Indicators on LCD ................................................................................ 47
How to use the buttons .................................................................... 48
Auto operation ................................................................................... 48
Cooling/Heating/Fan operation ........................................................ 48
Dehumidifying operation .................................................................. 49
Timer operation ................................................................................. 50
Handling the remote controller ........................................................ 54
17
Safety
Safety
Precautions
Safety Precautions
Read Safety Precautions Before Operation and Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
This symbol indicates the possibility
of personnel injury or loss of life.
CAUTION
This symbol indicates the possibility of
property damage or serious consequences.
WARNING
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(EN Standard requirements).
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(IEC Standard requirements).
•
•
•
•
•
•
•
•
•
WARNINGS FOR PRODUCT USE
If an abnormal situation arises (like a burning smell), immediately turn off the unit and disconnect
the power. Call your dealer for instructions to avoid electric shock, fire or injury.
Do not insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since
the fan may be rotating at high speeds.
Do not use flammable sprays such as hair spray, lacquer or paint near the unit. This may cause
fire or combustion.
Do not operate the air conditioner in places near or around combustible gases. Emitted gas may
collect around the unit and cause explosion.
Do not operate your air conditioner in a wet room such as a bathroom or laundry room. Too
much exposure to water can cause electrical components to short circuit.
Do not expose your body directly to cool air for a prolonged period of time.
Do not allow children to play with the air conditioner. Children must be supervised around the
unit at all times.
If the air conditioner is used together with burners or other heating devices, thoroughly ventilate
the room to avoid oxygen deficiency.
In certain functional environments, such as kitchens, server rooms, etc., the use of specially
designed air-conditioning units is highly recommended.
 Page 5 
Safety
Precautions
CLEANING AND MAINTENANCE WARNINGS
• Turn off the device and disconnect the power before cleaning. Failure to do so can cause
electrical shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents
can cause fire or deformation.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
CAUTION
Turn off the air conditioner and disconnect the power if you are not going to use it for a long time.
Turn off and unplug the unit during storms.
Make sure that water condensation can drain unhindered from the unit.
Do not operate the air conditioner with wet hands. This may cause electric shock.
Do not use device for any other purpose than its intended use.
Do not climb onto or place objects on top of the outdoor unit.
Do not allow the air conditioner to operate for long periods of time with doors or windows open,
or if the humidity is very high.
ELECTRICAL WARNINGS
Only use the specified power cord. If the power cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
Keep power plug clean. Remove any dust or grime that accumulates on or around the plug. Dirty
plugs can cause fire or electric shock.
Do not pull power cord to unplug unit. Hold the plug firmly and pull it from the outlet. Pulling
directly on the cord can damage it, which can lead to fire or electric shock.
Do not modify the length of the power supply cord or use an extension cord to power the unit.
Do not share the electrical outlet with other appliances. Improper or insufficient power supply
can cause fire or electrical shock.
The product must be properly grounded at the time of installation, or electrical shock may occur.
For all electrical work, follow all local and national wiring standards, regulations, and the
Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces
from damaging the terminal. Improper electrical connections can overheat and cause fire, and may
also cause shock. All electrical connections must be made according to the Electrical Connection
Diagram located on the panels of the indoor and outdoor units.
All wiring must be properly arranged to ensure that the control board cover can close properly. If
the control board cover is not closed properly, it can lead to corrosion and cause the connection
points on the terminal to heat up, catch fire, or cause electrical shock.
If connecting power to fixed wiring, an all-pole disconnection device which has at least 3mm
clearances in all poles, and have a leakage current that may exceed 10mA, the residual current
device(RCD) having a rated residual operating current not exceeding 30mA, and disconnection
must be incorporated in the fixed wiring in accordance with the wiring rules.
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s circuit board (PCB) is designed with a fuse to provide overcurrent protection.
The specifications of the fuse are printed on the circuit board ,such as :
Indoor unit: T3.15AL/250VAC, T5AL/250VAC, T3.15A/250VAC, T5A/250VAC, etc.
Outdoor unit: T20A/250VAC(<=18000Btu/h units), T30A/250VAC(>18000Btu/h units)
NOTE: For the units with R32 or R290 refrigerant , only the blast-proof ceramic fuse can be used.
 Page 6 
Safety
Precautions
WARNINGS FOR PRODUCT INSTALLATION
1. Installation must be performed by an authorized dealer or specialist. Defective installation can
cause water leakage, electrical shock, or fire.
2. Installation must be performed according to the installation instructions. Improper installation
can cause water leakage, electrical shock, or fire.
(In North America,installation must be performed in accordance with the requirement of NEC
and CEC by authorized personnel only.)
3. Contact an authorized service technician for repair or maintenance of this unit. This appliance
shall be installed in accordance with national wiring regulations.
4. Only use the included accessories, parts, and specified parts for installation. Using non-standard
parts can cause water leakage, electrical shock, fire, and can cause the unit to fail.
5. Install the unit in a firm location that can support the unit’s weight. If the chosen location cannot
support the unit’s weight, or the installation is not done properly, the unit may drop and cause
serious injury and damage.
6. Install drainage piping according to the instructions in this manual. Improper drainage may
cause water damage to your home and property.
7. For units that have an auxiliary electric heater, do not install the unit within 1 meter (3 feet) of
any combustible materials.
8. Do not install the unit in a location that may be exposed to combustible gas leaks. If
combustible gas accumulates around the unit, it may cause fire.
9. Do not turn on the power until all work has been completed.
10.When moving or relocating the air conditioner, consult experienced service technicians for
disconnection and reinstallation of the unit.
11.How to install the appliance to its support, please read the information for details in "indoor unit
installation" and "outdoor unit installation" sections .
Note about Fluorinated Gasses(Not applicable to the unit using R290 Refrigerant)
1. This air-conditioning unit contains fluorinated greenhouse gasses. For specific information on the
2.
3.
4.
5.
type of gas and the amount, please refer to the relevant label on the unit itself or the
“Owner's Manual - Product Fiche ” in the packaging of the outdoor unit. (European
Union products only).
Installation, service, maintenance and repair of this unit must be performed by a certified
technician.
Product uninstallation and recycling must be performed by a certified technician.
For equipment that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO2
equivalent or more, but of less than 50 tonnes of CO2 equivalent, If the system has a leakdetection system installed, it must be checked for leaks at least every 24 months.
When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
 Page 7 
Safety
Precautions
WARNING for Using R32 Refrigerant
When flammable refrigerant are employed, appliance shall be stored in a well -ventilated area
where the room size corresponds to the room area as specifiec for operation.
For R32 frigerant models:
2
Appliance shall be installed, operated and stored in a room with a floor area larger than 4m .
Appliance shall not be installed in an unvertilated space, if that space is smaller than 4m 2 .
Reusable mechanical connectors and flared joints are not allowed indoors.
(EN Standard Requirements).
Mechanical connectors used indoors shall have a rate of not more than 3g/year at 25%
of the maximum allowable pressure. When mechanical connectors are reused indoors,
sealing parts shall be renewed. When flared joints are reused indoors, the flare part
shall be re-fabricated. (UL Standard Requirements)
When mechanical connectors are reused indoors, sealing parts shall be renewed. When
flared joints are reused indoors, the flare part shall be re-fabricated.
(IEC Standard Requirements)
Correct Disposal of This Product
(Waste Electrical & Electronic Equipment)
(Applicable in countries with separate collection systems)
This marking on the product, accessories or literature indicates that the product and its electronic accessories (e.g.
charger, headset, USB cable) should not be disposed of with other household waste at the end of their working life.
To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate
these items from other types of waste and recycle them responsibly to promote the sustainable reuse of material
resources.
Household users should contact either the retailer where they purchased this product, or their local government
office, for details of where and how they can take these items for environmentally safe recycling. Business users
should contact their supplier and check the terms and conditions of the purchase contract. This product and its
electronic accessories should not be mixed with other commercial wastes for disposal.
For more information on safe disposal and recycling, visit our website www.samsung.com/in/support or contact
our Helpline numbers - 1800 40 SAMSUNG (1800 40 7267864)
1800 5 SAMSUNG (1800 5 7267864).
Correct disposal of batteries in this product
This marking on the battery, manual or packaging indicates that the batteries in this product should not
be disposed of with other household waste at the end of their working life. Where marked, the chemical
symbols Hg, Cd or Pb indicate that the battery contains mercury, cadmium or lead above the reference levels
in EC Directive 2006/66.
 Page 8 
WARNING
In case of a malfunction, immediately stop operation of the
air conditioner and disconnect the entire power system. Then
consult the authorized service personnel.
CAUTION
The product shall be stored in a room with no ignition sources
(e.g. open flames, gas appliance, electric heater, etc.).
• Note that the refrigerant has no odour.
When the air conditioner does not operate properly for cooling
or heating, there is a possibility of refrigerant leakage. If any
leakage, stop operation, ventilate the room, and consult your
dealer immediately for recharging refrigerant.
The refrigerant is not harmful. However, if it comes in contact
with fire, it may generate harmful gases and there is risk of fire.
During transportation of the indoor unit, the pipe lines shall be
covered with brackets for protection. Do not move the product
with holding the pipe lines.
• It may cause gas leakage.
Do not cut or burn the refrigerant container or pipings.
Do not point the air direction to the fireplace or heater.
 Page 9 
Unit Specifications and Features
Unit
Specifications
and Features
Indoor unit display
NOTE: Different models have different front panel and display window. Not all the indicators
describing below are available for the air conditioner you purchased. Please check the indoor display
window of the unit you purchased.
Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit
may be slightly different. The actual shape shall prevail.
Power Cable (Some Units )
Front Panel
Remote Control
Louver
Remote Control
Holder (Some Units)
Functional Filter
(On Back of Main Filter - Some Units)
Display window
AR**TY5QA**
(A)
“
” Displays temperature, operation feature and Error codes:
Display Code
Meanings
“
” for 3 seconds when:
• TIMER ON is set (if the unit is OFF, “
” remains on when TIMER ON is set )
• FRESH , SWING, TURBO , SILENCE or SOLAR PV ECO feature is turned on
“
” for 3 seconds when:
• TIMER OFF is set
• FRESH , SWING, TURBO , SILENCE or SOLAR PV ECO feature is turned off
“
” when anti-cold air feature is turned on
“
” when defrosting(cooling & heating units)
“
” when unit is self-cleaning
“
” when 8 C heating feature is turned on
 Page 10 
Operating temperature
Inverter Split Type
COOL mode
Room Temperature
Outdoor
Temperature
DRY mode
17°C - 32°C
(62°F - 90°F)
10°C - 32°C
(50°F - 90°F)
0°C - 50°C
(32°F - 122°F)
0°C - 50°C
(32°F - 122°F)
FOR OUTDOOR UNITS
WITH AUXILIARY
ELECTRIC HEATER
Unit
Specifications
and Features
When your air conditioner is used outside of the following temperature ranges, certain safety
protection features may activate and cause the unit to disable.
When outside
temperature is below 0°C
(32°F ), we strongly
recommend keeping the
unit plugged in at all
time to ensure smooth
ongoing performance.
NOTE: Room relative humidity less than 80%. If the air conditioner operates in excess of this
figure, the surface of the air conditioner may attract condensation. Please sets the vertical air
flow louver to its maximum angle (vertically to the floor), and set HIGH fan mode.
To further optimize the performance of your unit, do the following:
• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.
 Page 11 
Not all the functions are available for the air
conditioner, please check the indoor display
and remote control of the unit you purchased.
Unit
Specifications
and Features
Other Features
• Auto-Restart
If the unit loses power, it will automatically
restart with the prior settings once power has
been restored.
• Louver Angle Memory
When turning on your unit, the louver will
automatically resume its former angle.
• Refrigerant Leakage Detection
The indoor unit will automatically display “EC”
or “EL0C”or flash LEDS (model dependent )
when it detects refrigerant leakage.
• Sleep Operation
The SLEEP function is used to decrease
energy use while you sleep (and don’t
need the same temperature settings to
stay comfortable). This function can only
be activated via remote control. And the
Sleep function is not available in FAN or
DRY mode.
Press the SLEEP button when you are
ready to go to sleep. When in COOL mode,
the unit will increase the temperature
by 1°C (2°F) after 1 hour, and will increase
an additional 1°C (2°F) after another hour.
The sleep feature will stop after 8 hours and
the system will keep running with final
situation.
SLEEP Operation
Cool mode(+1 C/2 F) per hour
for the first two hours
Set
temperature
1hr
1hr
Saving energy during sleep
 Page 12 
Keep
running
• Setting Angle of Air Flow
Setting vertical angle of air flow
Ra
NOTE ON LOUVER ANGLES
When using COOL or DRY mode, do not set
louver at too vertical an angle for long periods
of time. This can cause water to condense on
the louver blade, which will drop on your floor
or furnishings.
When using COOL or HEAT mode, setting the
louver at too vertical an angle can reduce the
performance of the unit due to restricted air
flow.
Setting horizontal angle of air flow
The horizontal angle of the airflow must be set
manually. Grip the deflector rod (See Fig.B)
and manually adjust it to your preferred direction.
For some units, the horizontal angle of the airflow
can be set by remote control. please refer to the
Remote Control Manual.
Manual Operation(without remote)
CAUTION
The manual button is intended for testing purposes
and emergency operation only. Please do not use this
function unless the remote control is lost and it is
absolutely necessary. To restore regular operation,
use the remote control to activate the unit. Unit must
be turned off before manual operation.
To operate your unit manually:
1. Open the front panel of the indoor unit.
2. Locate the MANUAL CONTROL button on
the right-hand side of the unit.
3. Press the MANUAL CONTROL button one
time to activate FORCED AUTO mode.
4. Press the MANUAL CONTROL button again
to activate FORCED COOLING mode.
5. Press the MANUAL CONTROL button a third
time to turn the unit off.
6. Close the front panel.
ng
Unit
Specifications
and Features
While the unit is on, use the SWING/DIRECT
button on remote control to set the direction
(vertical angle) of airflow. Please refer to the
Remote Control Manual for details.
e
NOTE: Do not move louver by hand. This will
cause the louver to become out of sync. If this
occurs, turn off the unit and unplug it for a few
seconds, then restart the unit. This will reset the
louver.
Fig. A
CAUTION
Do not put your fingers in or near the blower
and suction side of the unit. The high-speed
fan inside the unit may cause injury.
Deflector
rod
Fig. B
Manual control button
 Page 13 
Care and Maintenance
Cleaning Your Indoor Unit
BEFORE CLEANING OR
MAINTENANCE
6. Rinse the filter with fresh water, then shake
off excess water.
7. Dry it in a cool, dry place, and refrain from
exposing it to direct sunlight.
Care and
Maintenance
8. When dry, re-clip the air freshening filter to
ALWAYS TURN OFF YOUR AIR CONDITIONER
the larger filter, then slide it back into the
SYSTEM AND DISCONNECT ITS POWER SUPPLY
indoor unit.
BEFORE CLEANING OR MAINTENANCE.
9. Close the front panel of the indoor unit.
CAUTION
Only use a soft, dry cloth to wipe the unit clean.
If the unit is especially dirty, you can use a cloth
soaked in warm water to wipe it clean.
• Do not use chemicals or chemically treated
cloths to clean the unit
• Do not use benzene, paint thinner,
polishing powder or other solvents to clean
the unit. They can cause the plastic surface
to crack or deform.
• Do not use water hotter than 40°C (104°F)
to clean the front panel. This can cause the
panel to deform or become discolored.
Cleaning Your Air Filter
A clogged air conditioner can reduce the cooling
efficiency of your unit, and can also be bad for
your health. Make sure to clean the filter once
every two weeks.
1. Lift the front panel of the indoor unit.
2. Grip the tab on the end of the filter, lift it
up,then pull it towards yourself.
3. Now pull the filter out.
4. If your filter has a small air freshening filter,
unclip it from the larger filter. Clean this air
freshening filter with a hand-held vacuum.
5. Clean the large air filter with warm, soapy
water. Be sure to use a mild detergent.
 Page 14 
Filter Tabs
CAUTION
• Before changing the filter or cleaning,
After long periods of non-use, or before periods
of frequent use, do the following:
Check for damaged wires
Clean all filters
Check for leaks
Replace batteries
CAUTION
• Any maintenance and cleaning of outdoor
unit should be performed by an authorized
dealer or a licensed service provider.
• Any unit repairs should be performed
by an authorized dealer or a licensed
service provider.
Maintenance –
Long Periods of Non-Use
Make sure nothing is blocking all air inlets and outlets
If you plan not to use your air conditioner for an
extended period of time, do the following:
Clean all filters
Turn on FAN function until
unit dries out completely
Turn off the unit and
disconnect the power
Remove batteries
from remote control
 Page 15 
Care and
Maintenance
turn off the unit and disconnect its power
supply.
• When removing filter, do not touch metal
parts in the unit. The sharp metal edges can
cut you.
• Do not use water to clean the inside of the
indoor unit. This can destroy insulation and
cause electrical shock.
• Do not expose filter to direct sunlight when
drying. This can shrink the filter.
Maintenance –
Pre-Season Inspection
Troubleshooting
SAFETY PRECAUTIONS
If ANY of the following conditions occurs, turn off your unit immediately!
• The power cord is damaged or abnormally warm
• You smell a burning odor
• The unit emits loud or abnormal sounds
• A power fuse blows or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit
DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED
SERVICE PROVIDER IMMEDIATELY!
Troubleshooting
Common Issues
The following problems are not a malfunction and in most situations will not require repairs.
Issue
Unit does not turn
on when pressing
ON/OFF button
The unit changes from
COOL/HEAT mode to
FAN mode
Possible Causes
The Unit has a 3-minute protection feature that prevents the unit from
overloading. The unit cannot be restarted within three minutes of being
turned off.
The set temperature has been reached, at which point the unit turns off the
compressor. The unit will continue operating when the temperature
fluctuates again.
The indoor unit
emits white mist
In humid regions, a large temperature difference between the room’s air
and the conditioned air can cause white mist.
The indoor unit makes
noises
A rushing air sound may occur when the louver resets its position.
Both the indoor unit
and outdoor unit make
noises
Low hissing sound during operation: This is normal and is caused by refrigerant
gas flowing through both indoor and outdoor units.
A squeaking sound may occur after running the unit in COOL mode due to
expansion and contraction of the unit’s plastic parts.
Low hissing sound when the system starts, has just stopped running, or is
defrosting: This noise is normal and is caused by the refrigerant gas stopping or
changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts
caused by temperature changes during operation can cause squeaking noises.
Page 16
Issue
Possible Causes
The outdoor unit
makes noises
The unit will make different sounds based on its current operating mode.
Dust is emitted from
either the indoor or
outdoor unit
The unit may accumulate dust during extended periods of non-use, which will be
emitted when the unit is turned on. This can be mitigated by covering the unit during
long periods of inactivity.
The unit emits a
bad odor
The fan of the outdoor
unit does not operate
Operation is erratic,
unpredictable, or
unit is unresponsive
The unit may absorb odors from the environment (such as furniture, cooking,
cigarettes, etc.) which will be emitted during operations.
The unit’s filters have become moldy and should be cleaned.
During operation, the fan speed is controlled to optimize product operation.
NOTE: If problem persists, contact a local dealer or your nearest customer service center. Provide
them with a detailed description of the unit malfunction as well as your model number.
Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Problem
Possible Causes
Solution
Temperature setting may be higher
Lower the temperature setting
than ambient room temperature
Poor Cooling
Performance
The heat exchanger on the indoor
or outdoor unit is dirty
Clean the affected heat exchanger
The air filter is dirty
Remove the filter and clean it according to
instructions
The air inlet or outlet of either
unit is blocked
Turn the unit off, remove the obstruction
and turn it back on
Doors and windows are open
Make sure that all doors and windows are
closed while operating the unit
Excessive heat is generated
by sunlight
Close windows and curtains during periods
of high heat or bright sunshine
Too many sources of heat in the
room (people, computers,
electronics, etc.)
Reduce amount of heat sources
Low refrigerant due to leak
or long-term use
Check for leaks, re-seal if necessary and
top off refrigerant
Page 17
Troubleshooting
Interference from cell phone towers and remote boosters may cause the unit to
malfunction.
In this case, try the following:
• Disconnect the power, then reconnect.
• Press ON/OFF button on remote control to restart operation.
Problem
The unit is not
working
The unit starts and
stops frequently
Troubleshooting
Indicator lamps
continue flashing
Error code appears and
begins with the letters
as the following in the
window display of
indoor unit:
• E(x), P(x), F(x)
• EH(xx), EL(xx), EC(xx)
• PH(xx), PL(xx), PC(xx)
Possible Causes
Solution
Power failure
Wait for the power to be restored
The power is turned off
Turn on the power
The fuse is burned out
Replace the fuse
Remote control batteries are dead
Replace batteries
The Unit’s 3-minute protection
has been activated
Wait three minutes after restarting
the unit
Timer is activated
Turn timer off
There’s too much or too little
refrigerant in the system
Check for leaks and recharge the
system with refrigerant.
Incompressible gas or moisture
has entered the system.
Evacuate and recharge the system
with refrigerant
The compressor is broken
Replace the compressor
The voltage is too high or
too low
Install a manostat to regulate the
voltage
The unit may stop operation or continue to run safely. If the indicator
lamps continue to flash or error codes appear, wait for about 10
minutes. The problem may resolve itself.
If not, disconnect the power, then connect it again. Turn the unit on.
If the problem persists, disconnect the power and contact your nearest
customer service center.
NOTE: If your problem persists after performing the checks and diagnostics above,
turn off your unit immediately and contact an authorized service center.
 Page 18 
Accessories
The air conditioning system comes with the following accessories. Use all of the installation parts
and accessories to install the air conditioner. Improper installation may result in water leakage,
electrical shock and fire, or cause the equipment to fail. The items are not included
with the air conditioner must be purchased separately.
Name of Accessories
Manual
Q’ty(pc)
2-3
Shape
Q’ty(pc)
Name of Accessories
Remote controller
1
Drain joint
(for cooling &
heating models)
1
Seal
(for cooling &
heating models)
1
Remote controller
holder(optional)
1
Mounting plate
1
Fixing screw for
remote controller
holder(optional)
2
Mounting plate
fixing screw
Name
5~8
(depending
on models)
Small Filter
(Need to be installed on
the back of main air filter
by the authorized
technician while installing
the machine)
1
Quantity(PC)
Shape
Liquid side
2
Accessories
Anchor
Battery
5~8
(depending
on models)
Shape
Φ 6.35( 1/4 i n) - 12 & 18K
Φ9.52( 3/8in) - 2 4 K
Connecting pipe
assembly
Φ9.52( 3/8in) - 12K 3Star
Gas side
Φ12.7( 1/2in) - 12K 5Star & 18K
Parts you must purc hase
separately. Consult the dealer
about the proper pipe size of
the unit you purchased.
Φ1 5 .9 ( 5 /8in) - 2 4 K
 Page 19
Installation Summary - Indoor Unit
1
2
15cm (5.9in)
12cm
(4.75in)
3
12cm
(4.75in)
2.3m (90.55in)
Select Installation Location
5
44
Drill Wall Hole
Installation Summary
-Indoor Unit
7
Prepare Drain Hose
Attach Mounting Plate
Determine Wall Hole Position
6
Connect Piping
Connect Wiring
(not applicable for some
locations in the US )
8
Wrap Piping and Cable
(not applicable for some locations in the US )
9
STEP
8
Mount Indoor Unit
 Page 20 
Unit Parts
NOTE: The installation must be performed in accordance with the requirement of local and
national standards. The installation may be slightly different in different areas.
1
1
Air-break switch
3
2
2
4
4
6
5
3
6
5
7
7
8
8
9
10
11
11
(1)
(2)
5
2 Front Panel
3 Power Cable (Some Units)
4 Louver
6
Functional Filter (On Back of
Main Filter - Some Units)
Drainage Pipe
7 Signal Cable
8 Refrigerant Piping
9 Remote Controller
10 Remote controller Holder
(Some Units)
11 Outdoor Unit Power Cable
(Some Units)
NOTE ON ILLUSTRATIONS
Illustrations in this manual are for explanatory purposes. The actual shape of your indoor
unit may be slightly different. The actual shape shall prevail.
Page 21
Unit Parts
1 Wall Mounting Plate
Indoor Unit Installation
Installation Instructions – Indoor unit
PRIOR TO INSTALLATION
Before installing the indoor unit, refer to the
label on the product box to make sure that the
model number of the indoor unit matches the
model number of the outdoor unit.
Step 1: Select installation location
Before installing the indoor unit, you must
choose an appropriate location. The following
are standards that will help you choose an
appropriate location for the unit.
Proper installation locations meet the
following standards:
NOTE ABOUT WALL HOLE:
If there is no fixed refrigerant piping:
While choosing a location, be aware that you
should leave ample room for a wall hole (see
Drill wall hole for connective piping step)
for the signal cable and refrigerant piping
that connect the indoor and outdoor units.
The default position for all piping is the right
side of the indoor unit (while facing the unit).
However, the unit can accommodate piping to
both the left and right.
Refer to the following diagram to ensure
proper distance from walls and ceiling:
15cm (5.9in) or more
 Good air circulation
 Convenient drainage
12cm (4.75in)
or more
12cm (4.75in)
or more
 Noise from the unit will not disturb other
people
 Firm and solid—the location will not vibrate
 Strong enough to support the weight of the
unit
 A location at least one meter from all other
electrical devices (e.g., TV, radio, computer)
DO NOT install unit in the following
locations:
Near any source of heat, steam, or
combustible gas
Near flammable items such as curtains or
clothing
Near any obstacle that might block air
circulation
Near the doorway
In a location subject to direct sunlight
Indoor Unit
Installation
 Page 22 
2.3m (90.55in) or more
Step 2: Attach mounting plate to wall
The mounting plate is the device on which you
will mount the indoor unit.
Remove the screw that attaches the mounting
plate to the back of the indoor unit.
Screw
Secure the mounting plate to the wall with
the screws provided. Make sure that mounting
plate is flat against the wall.
NOTE FOR CONCRETE OR BRICK WALLS:
If the wall is made of brick, concrete, or similar
material, drill 5mm-diameter (0.2in-diameter)
holes in the wall and insert the sleeve anchors
provided. Then secure the mounting plate to
the wall by tightening the screws directly into
the clip anchors.
Type B
229mm (9.01in)
228mm (8.98in)
47mm (1.85in)
126mm (4.96in)
Indoor unit outline
517.4mm (20.37in)
144mm (5.65in)
Wall
Outdoor
57mm (2.25in)
965mm (38in)
40mm (1.55in)
34mm (1.35in)
Indoor unit outline
Right rear wall
hole 65mm (2.5in)
model C(AR18TY5QAWKNNA)
NOTE: When the gas side connective pipe is
Φ 15.9mm(5/8in) or more, the wall hole should
be 90mm(3.54in).
5-7mm
(0.2-0.275in)
Indoor
Left rear wall
hole 65mm (2.5in)
58mm (2.3in)
model B(AR12TY5QAWKNNA)
319mm (12.55in)
When drilling the wall hole, make sure to
avoid wires, plumbing, and other sensitive
components.
Right rear wall
hole 65mm (2.5in)
802mm (31.6in)
138mm (5.45in)
CAUTION
58mm (2.28in)
Left rear wall
hole 65mm (2.5in)
42mm (1.65in)
401mm (15.78in)
297mm (11.7in)
Step 3: Drill wall hole for connective piping
1. Determine the location of the wall hole based
on the position of the mounting plate. Refer
to Mounting Plate Dimensions.
2. Using a 65mm (2.5in) or 90mm(3.54in)
(depending on models )core drill, drill a
hole in the wall. Make sure that the hole
is drilled at a slight downward angle, so
that the outdoor end of the hole is lower
than the indoor end by about 5mm to 7mm
(0.2-0.275in). This will ensure proper water
drainage.
3. Place the protective wall cuff in the hole. This
protects the edges of the hole and will help
seal it when you finish the installation process.
Fig.3.2
MOUNTING PLATE DIMENSIONS
Different models have different mounting plates.
For the different customization requirements, the
shape of the mounting plate may be slightly
different. But the installation dimensions are the
same for the same size of indoor unit.
See Type A and Type B for example:
Correct orientation of Mounting Plate
Indoor Unit
Installation
 Page 23 
Step 4: Prepare refrigerant piping
The refrigerant piping is inside an insulating
sleeve attached to the back of the unit. You
must prepare the piping before passing it
through the hole in the wall.
1. Based on the position of the wall hole relative
to the mounting plate, choose the side from
which the piping will exit the unit.
2. If the wall hole is behind the unit, keep the
knock-out panel in place. If the wall hole is to
the side of the indoor unit, remove the plastic
knock-out panel from that side of the unit.
This will create a slot through which your
piping can exit the unit. Use needle nose pliers
if the plastic panel is too difficult to remove by
hand.
3. Groove has been made in the knock-out
panel in order to cut it conveniently. The
size of the slot is determined by the diameter
of piping.
Knock-out Panel
4. If existing connective piping is already
embedded in the wall, proceed directly to
the Connect Drain Hose step. If there is no
embedded piping, connect the indoor unit’s
refrigerant piping to the connective piping
that will join the indoor and outdoor units.
Refer to the Refrigerant Piping Connection
section of this manual for detailed instructions.
Step 5: Connect drain hose
By default, the drain hose is attached to the lefthand side of unit (when you’re facing the back
of the unit). However, it can also be attached to
the right-hand side. To ensure proper drainage,
attach the drain hose on the same side that your
refrigerant piping exits the unit. Attach drain hose
extension (purchased separately) to the end of
drain hose.
Wrap the connection point firmly with Teflon
tape to ensure a good seal and to prevent leaks.
For the portion of the drain hose that will remain
indoors, wrap it with foam pipe insulation to
prevent condensation.
Remove the air filter and pour a small amount
of water into the drain pan to make sure that
water flows from the unit smoothly.
NOTE ON DRAIN HOSE
PLACEMENT
Make sure to arrange the drain hose
according to the following
figures.
.
CORRECT
Make sure there are no kinks
or dent in drain hose to ensure
proper drainage.
NOT CORRECT
Kinks in the drain hose
will create water traps.
NOTE ON PIPING ANGLE
Refrigerant piping can exit the indoor unit from
four different angles:Left-hand side,Right-hand
side, Left rear, Right rear.
Indoor Unit
Installation
NOT CORRECT
Kinks in the drain hose
will create water traps.
CAUTION
Be extremely careful not to dent or damage
the piping while bending them away from
the unit. Any dents in the piping will affect
the unit’s performance.
 Page 24 
NOT CORRECT
Do not place the end of the
drain hose in water or in
containers that collect water.
This will prevent proper
drainage.
PLUG THE UNUSED DRAIN HOLE
To prevent unwanted leaks
you must plug the unused
drain hole with the rubber
plug provided.
BEFORE PERFORMING ANY
ELECTRICAL WORK, READ THESE
REGULATIONS
BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE
MAIN POWER TO THE SYSTEM.
Step 6: Connect signal cable
The signal cable enables communication between
the indoor and outdoor units. You must first
choose the right cable size before preparing it for
connection.
Cable Types
• Indoor Power Cable (if applicable):
H05VV-F or H05V2V2-F
• Outdoor Power Cable: H07RN-F
• Signal Cable: H07RN-F
Minimum Cross-Sectional Area of
Power and Signal Cables (For reference)
Rated Current of
Appliance (A)
Nominal Cross-Sectional
Area (mm²)
> 3 and ≤ 6
0.75
> 6 and ≤ 10
1
> 10 and ≤ 16
1.5
> 16 and ≤ 25
2.5
> 25 and ≤ 32
4
> 32 and ≤ 40
6
CHOOSE THE RIGHT CABLE SIZE
The size of the power supply cable, signal
cable, fuse, and switch needed is determined
by the maximum current of the unit. The
maximum current is indicated on the nameplate
located on the side panel of the unit. Refer to
this nameplate to choose the right cable, fuse,
or switch.
Indoor Unit
Installation
1. All wiring must comply with local and national
electrical codes, regulations and must be
installed by a licensed electrician.
2. All electrical connections must be made
according to the Electrical Connection Diagram
located on the panels of the indoor and outdoor
units.
3. If there is a serious safety issue with the power
supply, stop work immediately. Explain your
reasoning to the client, and refuse to install the
unit until the safety issue is properly resolved.
4. Power voltage should be within 90-110% of
rated voltage. Insufficient power supply can
cause malfunction, electrical shock, or fire.
5. If connecting power to fixed wiring, install a
surge protector and main power switch with
a capacity of 1.5 times the maximum current
of the unit.
6. If connecting power to fixed wiring, a switch
or circuit breaker that disconnects all poles and
has a contact separation of at least 1/8in (3mm)
must be incorporated in the fixed wiring. The
qualified technician must use an approved
circuit breaker or switch.
7. Only connect the unit to an individual branch
circuit outlet. Do not connect another
appliance to that outlet.
8. Make sure to properly ground the air conditioner.
9. Every wire must be firmly connected. Loose
wiring can cause the terminal to overheat,
resulting in product malfunction and possible fire.
10. Do not let wires touch or rest against refrigerant
tubing, the compressor, or any moving parts
within the unit.
11. If the unit has an auxiliary electric heater, it must
be installed at least 1 meter (40in) away from
any combustible materials.
12. To avoid getting an electric shock, never touch
the electrical components soon after the power
supply has been turned off. After turning off
the power, always wait 10 minutes or more
before you touch the electrical components.
WARNING
 Page 25 
1. Open front panel of the indoor unit.
2. Using a screwdriver, open the wire box cover
on the right side of the unit. This will reveal
the terminal block.
Terminal block
Wire cover
Screw
Cable clamp
WARNING
NOTE ABOUT WIRING
THE WIRING CONNECTION PROCESS MAY
DIFFER SLIGHTLY BETWEEN UNITS AND
REGIONS.
Step 7: Wrappiping and cables
Before passing the piping, drain hose, and the
signal cable through the wall hole, you must
bundle them together to save space, protect
them, and insulate them(Not applicable in
North America).
1. Bundle the drain hose, refrigerant pipes, and
signal cable as shown below:
Indoor Unit
ALL WIRING MUST BE PERFORMED
STRICTLY IN ACCORDANCE WITH THE
WIRING DIAGRAM LOCATED ON THE
BACK OF THE INDOOR UNIT ’S FRONT
PANEL .
Space behind unit
Refrigerant piping
Insulation tape
Signal wire Drain hose
3. Unscrew the cable clamp below the terminal
block and place it to the side.
4. Facing the back of the unit, remove the plastic
panel on the bottom left-hand side.
5. Feed the signal wire through this slot, from
the back of the unit to the front.
6. Facing the front of the unit, connect the wire
according to the indoor unit’s wiring diagram,
connect the u-lug and firmly screw each wire
to its corresponding terminal.
CAUTION
DO NOT MIX UP LIVE AND NULL WIRES
This is dangerous, and can cause the air
conditioning unit to malfunction.
Indoor Unit
Installation
7. After checking to make sure every connection
is secure, use the cable clamp to fasten the
signal cable to the unit. Screw the cable clamp
down tightly.
8. Replace the wire cover on the front of the
unit, and the plastic panel on the back.
 Page 26 
DRAIN HOSE MUST BE ON BOTTOM
Make sure that the drain hose is at the bottom
of the bundle. Putting the drain hose at the
top of the bundle can cause the drain pan
to overflow, which can lead to fire or water
damage.
DO NOT INTERTWINE SIGNAL CABLE WITH
OTHER WIRES
While bundling these items together, do not
intertwine or cross the signal cable with any
other wiring.
2. Using adhesive vinyl tape, attach the drain
hose to the underside of the refrigerant pipes.
3. Using insulation tape, wrap the signal wire,
refrigerant pipes, and drain hose tightly
together. Double-check that all items are
bundled.
DO NOT WRAP ENDS OF PIPING
When wrapping the bundle, keep the ends
of the piping unwrapped. You need to access
them to test for leaks at the end of the
installation process (refer to Electrical Checks
and Leak Checks section of this manual).
Step 8: Mount indoor unit
If you installed new connective piping to the
outdoor unit, do the following:
1. If you have already passed the refrigerant
2.
3.
4.
5.
6.
7.
piping through the hole in the wall, proceed
to Step 4.
Otherwise, double-check that the ends of the
refrigerant pipes are sealed to prevent dirt or
foreign materials from entering the pipes.
Slowly pass the wrapped bundle of refrigerant
pipes, drain hose, and signal wire through the
hole in the wall.
Hook the top of the indoor unit on the upper
hook of the mounting plate.
Check that unit is hooked firmly on mounting
by applying slight pressure to the left and
right-hand sides of the unit. The unit should
not jiggle or shift.
Using even pressure, push down on the
bottom half of the unit. Keep pushing down
until the unit snaps onto the hooks along the
bottom of the mounting plate.
Again, check that the unit is firmly mounted
by applying slight pressure to the left and the
right-hand sides of the unit.
If refrigerant piping is already embedded in
the wall, do the following:
1. Hook the top of the indoor unit on the upper
hook of the mounting plate.
2. Use a bracket or wedge to prop up the unit,
giving you enough room to connect the
refrigerant piping, signal cable, and drain
hose.
3. Connect drain hose and refrigerant piping
4.
5.
6.
7.
(refer to Refrigerant Piping Connection
section of this manual for instructions).
Keep pipe connection point exposed to
perform the leak test (refer to Electrical
Checks and Leak Checks section of this
manual).
After the leak test, wrap the connection point
with insulation tape.
Remove the bracket or wedge that is propping
up the unit.
Using even pressure, push down on the
bottom half of the unit. Keep pushing down
until the unit snaps onto the hooks along the
bottom of the mounting plate.
UNIT IS ADJUSTABLE
Keep in mind that the hooks on the mounting
plate are smaller than the holes on the back of
the unit. If you find that you don’t have ample
room to connect embedded pipes to the indoor
unit, the unit can be adjusted left or right by
about 30-50mm (1.25-1.95in), depending on
the model.
30-50mm
(1.2-1.95in)
30-50mm
(1.2-1.95in)
Move to left or right
Indoor Unit
Installation
 Page 27 
Outdoor Unit Installation
60cm (24in) above
Install the unit by following local codes and
regulations , there may be differ slightly
between different regions.
(12
on le in)
ft
in)
(79 t
m
0c ron
20 in f
60cm
(2
on r 4in)
ight
Installation Instructions – Outdoor unit
Step 1: Select installation location
Before installing the outdoor unit, you must
choose an appropriate location. The following are
standards that will help you choose an appropriate
location for the unit.
Proper installation locations meet the
following standards:
 Meets all spatial requirements shown in
Near an obstacle that will block air inlets
and outlets
Near a public street, crowded areas, or
where noise from the unit will disturb others
Near animals or plants that will be harmed
by hot air discharge
Near any source of combustible gas
In a location that is exposed to large
amounts of dust
In a location exposed to a excessive amounts
of salty air
SPECIAL CONSIDERATIONS FOR EXTREME
WEATHER
If the unit is exposed to heavy wind:
Install unit so that air outlet fan is at a 90°
angle to the direction of the wind. If needed,
build a barrier in front of the unit to protect it
from extremely heavy winds.
See Figures below.
Strong wind
Wind Baffle
Strong
wind
Strong wind
Installation Space Requirements above.
 Good air circulation and ventilation
 Firm and solid—the location can support the
unit and will not vibrate
 Noise from the unit will not disturb others
 Protected from prolonged periods of direct
Outdoor Unit
Installation
sunlight or rain
 Where snowfall is anticipated, raise the
unit above the base pad to prevent ice
buildup and coil damage. Mount the unit
high enough to be above the average
accumulated area snowfall. The minimum
height must be 18 inches
 Page 28 
If the unit is frequently exposed to heavy
rain or snow:
Build a shelter above the unit to protect
it from the rain or snow. Be careful not to
obstruct air flow around the unit.
If the unit is frequently exposed to salty air
(seaside):
Use outdoor unit that is specially designed to
resist corrosion.
Installation
30cm
in) ll
(12 wa
m
ck
c
30 ba
m
fro
DO NOT install unit in the following locations:
Step 3: Anchor outdoor unit
The outdoor unit can be anchored to the
ground or to a wall-mounted bracket with
bolt(M10). Prepare the installation base of the
unit according to the dimensions below.
UNIT MOUNTING DIMENSIONS
The following is a list of different outdoor
unit sizes and the distance between their
mounting feet. Prepare the installation base
of the unit according to the dimensions
below.
W
A
Air inlet
B
Air inlet
D
Step 2: Install drain joint(Heat pump unit only)
Before bolting the outdoor unit in place, you must
install the drain joint at the bottom of the unit.
Note that there are two different types of drain
joints depending on the type of outdoor unit.
If the drain joint comes with a rubber seal
(see Fig. A ), do the following:
1. Fit the rubber seal on the end of the drain joint
that will connect to the outdoor unit.
2. Insert the drain joint into the hole in the base
pan of the unit.
3. Rotate the drain joint 90° until it clicks in place
facing the front of the unit.
4. Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
If the drain joint doesn’t come with a rubber
seal (see Fig. B ), do the following:
1. Insert the drain joint into the hole in the base
pan of the unit. The drain joint will click in
place.
2. Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
Air outlet
H
Base pan hole of
outdoor unit
Seal
W
Seal
Drain joint
(A)
(B)
IN COLD CLIMATES
Outdoor Unit
Installation
In cold climates, make sure that the drain hose
is as vertical as possible to ensure swift water
drainage. If water drains too slowly, it can
freeze in the hose and flood the unit.
 Page 29 
Outdoor Unit Dimensions (mm)
Mounting Dimensions
Model
WxHxD
Distance A (mm)
Distance B (mm)
770x555x300 (30.3”x21.8”x11.8”)
487 (19.2”)
298 (11.7”)
AR12TY5Q****NA
800x554x333 (31.5”x21.8”x13.1”)
514 (20.2”)
340 (13.4”)
AR18TY5Q****NA
If you will install the unit on the ground or
on a concrete mounting platform, do the
following:
1. Mark the positions for four expansion bolts
based on dimensions chart.
2. Pre-drill holes for expansion bolts.
3. Place a nut on the end of each expansion bolt.
4. Hammer expansion bolts into the pre-drilled
holes.
5. Remove the nuts from expansion bolts, and
place outdoor unit on bolts.
6. Put washer on each expansion bolt, then
replace the nuts.
7. Using a wrench, tighten each nut until snug.
WARNING
WHEN DRILLING INTO CONCRETE, EYE
PROTECTION IS RECOMMENDED AT ALL
TIMES.
Outdoor Unit
Installation
 Page 30 
If you will install the unit on a wall-mounted
bracket , do the following:
CAUTION
Make sure that the wall is made of solid brick,
concrete, or of similarly strong material. The
wall must be able to support at least four
times the weight of the unit.
1.Mark the position of bracket holes based on
dimensions chart.
2. Pre-drill the holes for the expansion bolts.
3. Place a washer and nut on the end of each
expansion bolt.
4. Thread expansion bolts through holes in
mounting brackets, put mounting brackets
in position, and hammer expansion bolts into
the wall.
5. Check that the mounting brackets are level.
6. Carefully lift unit and place its mounting feet
on brackets.
7. Bolt the unit firmly to the brackets.
8. If allowed, install the unit with rubber
gaskets to reduce vibrations and noise.
Step 4: Connect signal and power cables
The outside unit’s terminal block is protected by
an electrical wiring cover on the side of the unit.
A comprehensive wiring diagram is printed on
the inside of the wiring cover.
WARNING
BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE MAIN
POWER TO THE SYSTEM.
1. Prepare the cable for connection:
USE THE RIGHT CABLE
• Indoor Power Cable (if applicable): H05VV-F
or H05V2V2-F
• Outdoor Power Cable: H07RN-F
• Signal Cable: H07RN-F
CHOOSE THE RIGHT CABLE SIZE
The size of the power supply cable, signal cable,
fuse, and switch needed is determined by the
maximum current of the unit. The maximum
current is indicated on the nameplate located on
the side panel of the unit. Refer to this nameplate
to choose the right cable, fuse, or switch.
a. Using wire strippers, strip the rubber
jacket from both ends of cable to reveal
about 40mm (1.57in) of the wires inside.
b. Strip the insulation from the ends of the
wires.
c. Using a wire crimper, crimp u-lugs on the
ends of the wires.
PAY ATTENTION TO LIVE WIRE
While crimping wires, make sure you clearly
distinguish the Live (“L”) Wire from other wires.
2. Unscrew the electrical wiring cover and remove it.
3. Unscrew the cable clamp below the terminal
block and place it to the side.
4. Connect the wire according to the wiring
diagram, and firmly screw the u-lug of each
wire to its corresponding terminal.
5. After checking to make sure every connection is
secure, loop the wires around to prevent rain
water from flowing into the terminal.
6. Using the cable clamp, fasten the cable to the
unit. Screw the cable clamp down tightly.
7. Insulate unused wires with PVC electrical tape.
Arrange them so that they do not touch any
electrical or metal parts.
8. Replace the wire cover on the side of the unit,
and screw it in place.
Cover
Screw
In North America
1. Remove the wire cover from the unit by
loosening the 3 screws.
2. Dismount caps on the conduit panel.
3. Temperarily mount the conduit tubes(not
included) on the conduit panel.
4. Properly connect both the power supply and
low voltage lines to the corresponding
terminals on the terminal block.
5. Ground the unit in accordance with local codes.
6. Be sure to size each wire allowing several inches
longer than the required length for wiring.
7. Use lock nuts to secure the conduit tubes.
Terminal block
Ove
r 1.5
WARNING
(40m
Connecting cable
m)
G
Power supply cord
Conduit panel
Wire Cover
Please select the appropriate through-hole according
to the diameter of the wire.
 Page 31 
Outdoor Unit
Installation
ALL WIRING WORK MUST BE PERFORMED
STRICTLY IN ACCORDANCE WITH THE
WIRING DIAGRAM LOCATED INSIDE OF
WIRE COVER OF THE OUTDOOR UNIT .
7in.
Refrigerant Piping Connection
When connecting refrigerant piping, do not let substances or gases other than the specified
refrigerant enter the unit. The presence of other gases or substances will lower the unit’s capacity,
and can cause abnormally high pressure in the refrigeration cycle. This can cause explosion and
injury.
Note on Pipe Length
The length of refrigerant piping will affect the performance and energy efficiency of the unit. Nominal
efficiency is tested on units with a pipe length of 5 meters (16.5ft)
A minimum pipe run of 3 metres is required to minimise vibration & excessive noise.
Refer to the table below for specifications on the maximum length and drop height of piping.
Maximum Length and Drop Height of Refrigerant Piping per Unit Model
Model
Capacity (BTU/h)
Max. Length (m)
< 15,000
R410A,R32 Inverter Split Air
Conditioner
Max. Drop Height (m)
25 (82ft)
10 (33ft)
≥ 15,000 and < 24,000
30 (98.5ft)
20 (66ft)
≥ 24,000 and < 36,000
50 (164ft)
25 (82ft)
Connection Instructions – Refrigerant Piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra
care to cut and flare them properly. This will
ensure efficient operation and minimize the
need for future maintenance.
1. Measure the distance between the indoor
and outdoor units.
2. Using a pipe cutter, cut the pipe a little longer
than the measured distance.
3. Make sure that the pipe is cut at a perfect 90°
angle.
Refrigerant piping
Connection
 Page 32 
90°
Oblique Rough Warped
DO NOT DEFORM PIPE
WHILE CUTTING
Be extra careful not to damage, dent, or
deform the pipe while cutting. This will
drastically reduce the heating efficiency
of the unit.
Step 2: Remove burrs
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all
burrs from the cut section of the pipe.
Pipe
Reamer
Point down
PIPING EXTENSION BEYOND FLARE FORM
Outer Diameter of
Pipe (mm)
A (mm)
Min.
Max.
Max.
Ø 6.35 (Ø 0.25”)
0.7 (0.0275”)
1.3 (0.05”)
Ø 9.52 (Ø 0.375”)
1.0 (0.04”)
1.6 (0.063”)
Ø12.7 ( Ø 0.5”)
1.0 (0.04”)
1.8 (0.07”)
Ø 15.9 ( Ø 0.63”)
2.0 (0.078”)
2.2 (0.086”)
Ø 19.05 ( Ø 0.75”)
2.0 (0.078”)
2.4 (0.094”)
Flare form
A
Pipe
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight
seal.
1. After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place flare nuts on both ends of pipe. Make
sure they are facing in the right direction,
because you can’t put them on or change
their direction after flaring.
Flare nut
6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool clockwise
until the pipe is fully flared.
8. Remove the flaring tool and flare form, then
inspect the end of the pipe for cracks and
even flaring.
Step 4: Connect pipes
When connecting refrigerant pipes, be careful
not to use excessive torque or to deform the
piping in any way. You should first connect the
low-pressure pipe, then the high-pressure pipe.
MINIMUM BEND RADIUS
Copper pipe
When bending connective refrigerant piping,
the minimum bending radius is 10cm.
4. Remove PVC tape from ends of pipe when
ready to perform flaring work.
5. Clamp flare form on the end of the pipe.
The end of the pipe must extend beyond the
edge of the flare form in accordance with the
dimensions shown in the table below.
Radius ≥10cm (4in)
Instructions for Connecting Piping to
Indoor Unit
1. Align the center of the two pipes that you will
connect.
Flare nut
Pipe
 Page 33 
Refrigerant piping
Connection
Indoor unit tubing
2. Tighten the flare nut as tightly as possible by
hand.
3. Using a spanner, grip the nut on the unit
tubing.
4. While firmly gripping the nut on the unit
tubing, use a torque wrench to tighten the
flare nut according to the torque values in the
Torque Requirements table below. Loosen
the flaring nut slightly, then tighten again.
TORQUE REQUIREMENTS
Outer Diameter of Pipe
(mm)
Tightening Torque
(N•m)
Ø 6.35 (Ø 0.25”)
18~20(180~200kgf.cm)
8.4~8.7 (0.33~0.34”)
Ø 9.52 (Ø 0.375”)
32~39(320~390kgf.cm)
13.2~13.5 (0.52~0.53”)
Ø 12.7 (Ø 0.5”)
49~59(490~590kgf.cm)
16.2~16.5 (0.64~0.65”)
Ø 15.9 (Ø 0.63”)
57~71(570~710kgf.cm)
19.2~19.7 (0.76~0.78”)
Ø 19.05 ( Ø 0.75”)
67~101(670~1010kgf.cm)
23.2~23.7 (0.91~0.93”)
Flare dimension(B)
(mm)
Flare shape
90 °± 4
45 °
±2
B
R0.4~0. 8
DO NOT USE EXCESSIVE TORQUE
Excessive force can break the nut or damage the refrigerant piping. You must not exceed
torque requirements shown in the table above.
Instructions for Connecting Piping to Outdoor Unit
1. Unscrew the cover from the packed valve on
the side of the outdoor unit.
2. Remove protective caps from ends of valves.
3. Align flared pipe end with each valve, and
tighten the flare nut as tightly as possible by
hand.
4. Using a spanner, grip the body of the valve.
Do not grip the nut that seals the service
valve.
Valve cover
Refrigerant piping
Connection
5. While firmly gripping the body of the valve,
use a torque wrench to tighten the flare nut
according to the correct torque values.
 Page 34 
6. Loosen the flaring nut slightly, then tighten
again.
7. Repeat Steps 3 to 6 for the remaining pipe.
USE SPANNER TO GRIP MAIN
BODY OF VALVE
Torque from tightening the flare nut can snap
off other parts of valve.
Air Evacuation
If there is a change in system pressure, refer
to Gas Leak Check section for information
Air and foreign matter in the refrigerant circuit can
on how to check for leaks. If there is no
change in system pressure, unscrew the cap
cause abnormal rises in pressure, which can damage
the air conditioner, reduce its efficiency, and cause 9. from the packed valve (high pressure valve).
Insert hexagonal wrench into the packed valve
injury. Use a vacuum pump and manifold gauge to
(high pressure valve) and open the valve by
evacuate the refrigerant circuit, removing any
turning the wrench in a 1/4 counterclockwise
non-condensable gas and moisture from the system.
turn. Listen for gas to exit the system, then
Evacuation should be performed upon initial
close the valve after 5 seconds.
installation and when unit is relocated.
10. Watch the Pressure Gauge for one minute
to make sure that there is no change in
BEFORE PERFORMING EVACUATION
pressure. The Pressure Gauge should read
 Check to make sure the connective pipes
slightly higher than atmospheric pressure.
between the indoor and outdoor units
11. Remove the charge hose from the service port.
are connected properly .
 Check to make sure all wiring is connected
Flare nut
properly.
Preparations and Precautions
8.
Evacuation Instructions
1. Connect the charge hose of the manifold
2.
3.
4.
5.
gauge to service port on the outdoor unit’s
low pressure valve.
Connect another charge hose from the
manifold gauge to the vacuum pump.
Open the Low Pressure side of the manifold
gauge. Keep the High Pressure side closed.
Turn on the vacuum pump to evacuate the
system.
Run the vacuum for at least 15 minutes, or
until the Compound Meter reads -76cmHG
5
(-10 Pa).
Manifold Gauge
Compound
gauge
Cap
valve body
valve stem
12. Using hexagonal wrench, fully open both the
high pressure and low pressure valves.
13. Tighten valve caps on all three valves (service
port, high pressure, low pressure) by hand.
You may tighten it further using a torque
wrench if needed.
OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal
wrench until it hits against the stopper. Do not
try to force the valve to open further.
Pressure gauge
-76cmHg
Low pressure
valve
Pressure hose /
Charge hose
High pressure
valve
Charge hose
Vacuum
pump
Low pressure valve
Air Evacuation
6. Close the Low Pressure side of the manifold
gauge, and turn off the vacuum pump.
7. Wait for 5 minutes, then check that there
has been no change in system pressure.
 Page 35 
Note on Adding Refrigerant
Some systems require additional charging depending on pipe lengths. The refrigerant should be charged
from the service port on the outdoor unit’s low pressure valve. The additional refrigerant to be charged
can be calculated using the following formula:
ADDITIONAL REFRIGERANT PER PIPE LENGTH
Connective Pipe
Length (m)
Air Purging
Method
Additional Refrigerant
< Standard pipe length Vacuum Pump
> Standard pipe
length
Vacuum Pump
N/A
Liquid Side: Ø 6.35 (ø 0.25”)
Liquid Side: Ø 9.52 (ø 0.375”)
R32:
R32:
(Pipe length – standard length) x 12g/m
(Pipe length – standard length) x 24g/m
(Pipe length – standard length) x 0.13oZ/ft (Pipe length – standard length) x 0.26oZ/ft
CAUTION DO NOT mix refrigerant types.
Precautions on adding the R-32 refrigerant
Air Evacuation
In addition to the conventional charging procedure, the
following requirements shall be kept.
• Make sure that contamination by other refrigerants
does not occur for charging.
• To minimize the amount of refrigerant, keep the
hoses and lines as short as possible.
• The cylinders shall be kept upright.
• Make sure that the refrigeration system is earthed
before charging.
• Label the system after charging, if necessary.
• Extreme care is required not to overcharge the
system.
• Before recharging, the pressure shall be checked
with nitrogen blowing.
• After charging, check for leakage before
commissioning.
• Be sure to check for leakage before leaving the work
area.
Electrical and Gas Leak Checks
Before Test Run
Only perform test run after you have completed
the following steps:
• Electrical Safety Checks – Confirm that
the unit’s electrical system is safe and
operating properly
• Gas Leak Checks – Check all flare nut
connections and confirm that the system is
not leaking
• Confirm that gas and liquid (high and low
pressure) valves are fully open
Electrical Safety Checks
After installation, confirm that all electrical wiring
is installed in accordance with local and national
regulations, and according to the Installation
Manual.
BEFORE TEST RUN
Check Grounding Work
Measure grounding resistance by visual detection
and with grounding resistance tester. Grounding
resistance must be less than 0.1Ω.
Note: This may not be required for some
locations in the US.
WARNING – RISK OF
ELECTRIC SHOCK
ALL WIRING MUST COMPLY WITH LOCAL
AND NATIONAL ELECTRICAL CODES,
AND MUST BE INSTALLED BY A LICENSED
ELECTRICIAN.
Gas Leak Checks
There are two different methods to check for gas
leaks.
Soap and Water Method
Using a soft brush, apply soapy water or liquid
detergent to all pipe connection points on the
indoor unit and outdoor unit. The presence of
bubbles indicates a leak.
Leak Detector Method
If using leak detector, refer to the device’s
operation manual for proper usage instructions.
AFTER PERFORMING GAS LEAK CHECKS
After confirming that the all pipe connection
points DO NOT leak, replace the valve cover on
the outside unit.
Check-point of indoor unit
Check-point of outdoor unit
D
DURING TEST RUN
Check for Electrical Leakage
During the Test Run, use an electroprobe and
multimeter to perform a comprehensive electrical
leakage test.
If electrical leakage is detected, turn off the unit
immediately and call a licensed electrician to find
and resolve the cause of the leakage.
Note: This may not be required for some
locations in the US.
B
C
A
A: Low pressure stop valve
B: High pressure stop valve
C& D: Indoor unit flare nuts
Electrical and
Gas Leak Checks
Test Run
Test Run Instructions
You should perform the Test Run for at least 30
minutes.
1. Connect power to the unit.
2. Press the ON/OFF button on the remote
controller to turn it on.
3. Press the MODE button to scroll through the
following functions, one at a time:
• COOL – Select lowest possible temperature
• HEAT – Select highest possible temperature
4. Let each function run for 5 minutes, and
perform the following checks:
List of Checks to Perform
PASS/FAIL
No electrical leakage
Unit is properly grounded
All electrical terminals
properly covered
Indoor and outdoor units
are solidly installed
All pipe connection
points do not leak
Water drains properly
from drain hose
All piping is properly
insulated
Outdoor
(2):
Indoor
(2):
DOUBLE-CHECK PIPE CONNECTIONS
During operation, the pressure of the
refrigerant circuit will increase. This may
reveal leaks that were not present during your
initial leak check. Take time during the Test
Run to double-check that all refrigerant pipe
connection points do not have leaks. Refer to
Gas Leak Check section for instructions.
5. After the Test Run is successfully completed,
and you confirm that all checks points in List
of Checks to Perform have PASSED, do the
following:
a. Using remote control, return unit to
normal operating temperature.
b. Using insulation tape, wrap the indoor
refrigerant pipe connections that you
left uncovered during the indoor unit
installation process.
IF AMBIENT TEMPERATURE IS BELOW 17°C
(62°F)
You can’t use the remote controller to turn
on the COOL function when the ambient
temperature is below 17°C. In this instance,
you can use the MANUAL CONTROL button
to test the COOL function.
1. Lift the front panel of the indoor unit, and
raise it until it clicks in place.
2. The MANUAL CONTROL button is located
on the right-hand side of the unit. Press it 2
times to select the COOL function.
3. Perform Test Run as normal.
Unit performs COOL
function properly
Unit performs HEAT
function properly
Indoor unit louvers
rotate properly
Indoor unit responds to
remote controller
Manual control button
Test Run
In using R-32
• Table 1 (defined according to EN378-1:2008)
[Unit : m2]
1.750
2.000
2.250
2.500
Charge
amount (kg)
1.500
• Keep the piping length at a minimum to minimize
the additional refrigerant charge due to piping
extension.
• When connecting the pipes, make sure that
surrounding objects do not interfere with or
contact them to prevent refrigerant leakage due
to physical damage.
• Make sure that the spaces where the refrigerant
pipes are installed comply with national gas
regulations.
• Be sure to perform works such as additional
refrigerant charging and pipe welding under the
conditions of good ventilation.
• Be sure to perform welding and piping works for
mechanical connections under the conditions that
the refrigerant does not circulate.
• When reconnecting the pipes, make sure
to perform flared-jointing newly to prevent
refrigerant leakage.
• When working on the refrigerant pipes and the
flexible refrigerant connectors, be careful that
they are not damaged physically by surrounding
objects.
19.15
26.06
34.04
43.09
53.19
6.89
9.38
12.26
15.51
19.15
2.13
2.90
3.78
4.79
5.91
1.20
1.72
2.35
3.06
3.88
4.79
0.99
1.42
1.94
2.53
3.20
3.96
1.250
CAUTION
1.225
• For the product that uses the R-32 refrigerant, be
cautious not to generate a spark by keeping the
following requirements:
– Do not remove the fuses with power on.
– Do not disconnect the power plug from the
wall outlet with power on.
– It is recommended to locate the outlet in a
high position. Place the cords so that they are
not tangled.
• The outdoor unit shall be installed in an open space
that is always ventilated.
• The local gas regulations shall be observed.
• To handle, purge, and dispose the refrigerant, or
break into the refrigerant circuit, the worker should
have a certificate from an industry-accredited
authority.
• Do not install the indoor unit in the following areas:
– Area filled with minerals, splashed oil, or
steam. It will deteriorate plastic parts, causing
failure or leakage.
– Area that is close to heat sources.
– Area that produces substances such as sulfuric
gas, chlorine gas, acid, and alkali. It may cause
corrosion of the pipings and brazed joints.
– Area that can cause leakage of combustible
gas and suspension of carbon fibers,
flammable dust, or volatile flammables.
– Area where refrigerant leaks and settles.
– Area where animals may urinate on the
product. Ammonia may be generated.
• Do not use the indoor unit for preservation of food
items, plants, equipment, and art works. This may
cause deterioration of their quality.
• Do not install the indoor unit if it has any drainage
problem.
• For the multi system, this indoor unit can be
conncected to an R-32 or R-410A outdoor unit. Check
the type of refrigerant in the outdoor unit.
• In addition to table 1, make sure that the indoor and
outdoor unit are installed in a space at least of 4m²
to guarantee the regular maintenance or service
repair.
0.6
12.77
13.30
1
4.60
4.79
1.42
1.48
1.15
0.95
1.224
• Do not use means to accelerate the defrost
operation or to clean, other than those
recommended by Samsung.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an
odour.
Installation of the product
Installation
height (m)
1.8
2
2.2
No limitations
General information
• IMPORTANT: it’s mandatory to consider either
the table 1 or taking into consideration the local
law regarding the minimum living space of the
premises.
• Minimum installation height of indoor unit is 0.6 m
for floor mounted, 1.8 m for wall, 2.2 m for ceiling.
Installation of the outdoor unit
• While in installation or relocation of the product, do
not mix the refrigerant with other gases including
air or unspecified refrigerant. Failure to do so may
cause pressure increase to result in rupture or injury.
• Do not cut or burn the refrigerant container or
pipings.
• Use clean parts such as manifold gauge, vacuum
pump, and charging hose for the refrigerant.
• Installation must be carried out by qualified
personnel for handling the refrigerant. Additionally,
reference the regulations and laws.
• Be careful not to let foreign substances (lubricating
oil, refrigerant, water, etc.) enter the pipings. The
application of oil or refrigerant deteriorates the
pipings to result in drain leakage. For storage,
securely seal their openings.
• When mechanical ventilation is required, ventilation
openings shall be kept clear of obstruction.
• For disposal of the product, follow the local laws and
regulations.
• Do not work in a confined place.
• The work area shall be blocked.
• The refrigerant pipings shall be installed in the
position where there are no substances that may
result in corrosion.
• The following checks shall be performed for
installation:
– The charging amount depends on the room
size.
– The ventilation devices and outlets are
operating normally and are not obstructed.
– Markings and signs on the equipment shall be
visible and legible.
• Upon leakage of the refrigerant, ventilate the room.
When the leaked refrigerant is exposed to flame, it
may cause generation of toxic gases.
• Make sure that the work area is safe from
flammable substances.
• To purge air in the refrigerant, be sure to use a
vacuum pump.
• Note that the refrigerant has no odour.
• The units are not explosion proof so they must be
installed with no risk of explosion.
• This product contains fluorinated gases that
contribute to global greenhouse effect. Accordingly,
do not vent gases into the atmosphere.
• Because the working pressure for R-32 is 1.6 times
higher than that for R-22, use exclusive pipings
and tools specified. In case of replacing an R-22
model with an R-32 model, be sure to replace the
conventional pipings and flare nuts with exclusive
ones.
• The models that use the refrigerant R-32 have a
different thread diameter for the charging port
to prevent charging failure. Therefore, check its
diameter (1/2 inch) in advance.
• Servicing shall be performed as recommended by
the manufacturer. In case other skilled persons are
joined for servicing, it shall be carried out under
supervision of the person who is competent in
handling flammable refrigerants.
• For servicing the units containing flammable
refrigerants, safety checks are required to minimise
the risk of ignition.
• Servicing shall be performed following the
controlled procedure to minimize the risk of
flammable refrigerant or gases.
• Do not install where there is a risk of combustible
gas leakage.
• Do not place heat sources.
• Be cautious not to generate a spark as follows:
– Do not remove the fuses with power on.
– Do not disconnect the power plug from the
wall outlet with power on.
– It is recommended to locate the outlet in a
high position. Place the cords so that they are
not tangled.
• If the indoor unit is not R-32 compatible, an error
signal appears and the unit will not operate.
• After installation, check for leakage. Toxic gas may
be generated and if it comes into contact with an
ignition source such as fan heater, stove, and cooker.
cylinders, make sure that only the refrigerant
recovery cylinders are used.
Preparation of fire extinguisher
• If a hot work is to be done, an appropriate fire
extinguishing equipment should have been
available.
• A dry powder or CO2 fire extinguisher shall be
equipped near the charging area.
Ignition sources free
Labelling
• Make sure to store the units in a place without
continuously operating ignition sources (for
example, open flames, an operating gas appliance
or an operating electric heater).
• The service engineers shall not use any ignition
sources with the risk of fire or explosion.
• Potential ignition sources shall be kept away from
the work area where the flammable refrigerant can
possibly be released to the surrounding.
• The work area should be checked to ensure that
there are no flammable hazards or ignition risks.
The “No Smoking” sign shall be attached.
• Under no circumstances shall potential sources of
ignition be used while in detection of leakage.
• Make sure that the seals or sealing materials have
not degraded.
• Safe parts are the ones with which the worker can
work in a flammable atmosphere. Other parts may
result in ignition due to leakage.
• Replace components only with parts specified by
Samsung. Other parts may result in the ignition of
refrigerant in the atmosphere from a leak.
• The parts shall be labelled to ensure that they have
been decommissioned and emptied of refrigerant.
• The labels shall be dated.
• Make sure that the labels are affixed on the system
to notify it contains flammable refrigerant.
Area ventilation
• Make sure that the work area is well ventilated
before performing a hot work.
• Ventilation shall be made even during the work.
• The ventilation should safely disperse any
released gases and preferably expel them into the
atmosphere.
• Ventilation shall be made even during the work.
Leakage detection methods
• The leakage detector shall be calibrated in a
refrigerant-free area.
• Make sure that the detector is not a potential
source of ignition.
• The leakage detector shall be set to the LFL (lower
flammability limit).
• The use of detergents containing chlorine shall be
avoided for cleaning because the chlorine may react
with the refrigerant and corrode the pipings.
• If leakage is suspected, naked flames shall be
removed.
• If a leakage is found while in brazing, the entire
refrigerant shall be recovered from the product or
isolated (e.g. using shut-off valves). It shall not be
directly released to the environment. Oxygen free
nitrogen (OFN) shall be used for purging the system
before and during the brazing process.
• The work area shall be checked with an appropriate
refrigerant detector before and during work.
• Ensure that the leakage detector is appropriate for
use with flammable refrigerants.
Recovery
• When removing refrigerant from the system for
servicing or decommissioning, it is recommended to
remove the entire refrigerant.
• When transferring refrigerant into cylinders, make
sure that only the refrigerant recovery cylinders
are used.
• All cylinders used for the recovered refrigerant shall
be labelled.
• Cylinders shall be equipped with pressure relief
valves and shut-off valves in a proper order.
• Empty recovery cylinders shall be evacuated and
cooled before recovery.
• The recovery system shall operate normally
according to the specified instructions and shall be
suitable for refrigerant recovery.
• In addition, the calibration scales shall operate
normally.
• Hoses shall be equipped with leak-free disconnect
couplings.
• Before starting the recovery, check for the status of
the recovery system and sealing state. Consult with
the manufacturer if suspected.
• The recovered refrigerant shall be returned to the
supplier in the correct recovery cylinders with the
Waste Transfer Note attached.
• Do not mix refrigerants in the recovery units or
cylinders.
• If compressors or compressor oils are to be
removed, make sure that they have been evacuated
to the acceptable level to ensure that flammable
refrigerant does not remain in the lubricant.
• The evacuation process shall be performed before
sending the compressor to the suppliers.
• Only the electrical heating to the compressor body
is allowed to accelerate the process.
• Oil shall be drained safely from the system.
• For installation with handling the refrigerant
(R-32), use dedicated tools and piping materials.
Because the pressure of the refrigerant, R-32 is
approximately 1.6 times higher than that of R-22,
failure to use the dedicated tools and piping
materials may cause rupture or injury. Furthermore,
it may cause serious accidents such as water
leakage, electric shock, or fire.
• Never install a motor-driven equipment to prevent
ignition.
41
Maintenance Procedures
Performing the gas leak tests for repair
• Before starting the process, power supply must
be available.
In case of repair of the refrigerant circuit, the
following procedure must be kept to consider
flammability.
1 Be familiar with the equipment details.
1 Remove the refrigerant.
3 Before starting the process, make sure that:
2 Purge the refrigerant circuit with inert gas.
3 Perform evacuation.
4 Purge the circuit again with inert gas.
5 Open the circuit.
6 Perform repair work.
7 Charge the system with refrigerant.
8 Flush the system with nitrogen blowing for
safety.
9 Repeat the previous steps several times until no
refrigerant is within the system.
CAUTION
• Compressed air or oxygen shall not be used.
• Flush the system with nitrogen blowing, fill the
refrigerant until the working pressure is reached,
ventilate to atmosphere, and then pull down to a
vacuum state.
• For the final nitrogen blowing charge, the
system shall be ventilated down to atmospheric
pressure.
• The procedure is absolutely vital in case of
brazing on the pipings.
• Make sure that the outlet of the vacuum pump
is not closed to any ignition sources and there is
ventilation available.
• Do not apply any permanent inductive or
capacitance loads to the circuit without ensuring
that this will not exceed the permissible voltage
and current permitted for the air condiitoner.
Decommissioning
The following requirements must be fulfilled before
and while taking the decommissioning procedure:
• Before decommissioning, the worker shall be
familiar with the product details.
• The entire refrigerant shall be recovered safely.
• Before starting the process, oil and refrigerant
samples shall be taken just in case analysis is
required for reuse.
42
2 Isolate the system electrically.
• Any mechanical equipment is available for
handling refrigerant cylinders.
• All PPE (personal protective equipment) is
available for servicing.
• The recovery process shall be supervised by a
competent person.
• The recovery equipment and cylinders comply
with the standards.
4 Lower the refrigeration system, if possible.
5 If vacuuming is not possible, make a manifold so
that refrigerant can be easily removed from the
parts of the system.
6 Make sure that the cylinders are placed on the
scales before recovery.
7 Run the recovery system in accordance with the
manufacturer’s instructions.
8 Do not overcharge the cylinders. (No more than
80 %)
9 Be sure to keep the cylinder within the maximum
working pressure, even temporarily.
10 After charging, make sure that the cylinders and
the equipment are promptly removed from the
site and all isolation valves are closed.
11 Recovered refrigerant shall not be charged into
other refrigeration system unless it is cleaned
and checked.
43
44
45
46
Displayed when ECO feature is activated.
47
48
49
50
51
52
53
54
55
QUESTIONS OR COMMENTS?
COUNTRY
CALL
OR VISIT US ONLINE AT
INDIA
1800 40 SAMSUNG (1800 40 7267864) (Toll-Free)
1800 5 SAMSUNG (1800 5 7267864) (Toll-Free)
www.samsung.com/in/support
This product is RoHS compliant
This appliance is
filled with R-32.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement