Samsung | AR18MRFHFWKXGU | Samsung AR18MRFHFWKNGU User Manual

Air conditioner
User manual/Installation manual
AR✴✴MRFH✴✴
•• Thank you for purchasing this Samsung air conditioner.
•• Before operating this unit, please read this installation manual carefully and retain it for future
reference.
DB68-07301A-00
Contents
Safety Information 4
Safety Information
4
At a Glance
8
Indoor Unit Overview
Display
8
Remote Control Overview
Inserting batteries
9
Remote Control Operation
Operation modes • Controlling temperature •
Controlling fan speed • Controlling air flow direction
10
Power Smart Features
12
Cooling Operation
Cool mode • 2-Step cooling function
12
Dehumidifying Operation
Dry mode
13
Quick Smart Features
Auto mode • Fan mode • Fast function • Comfort function • Beep sound function
14
Energy-Saving Features
17
Energy-Saving Operation
Single user function • Timed on/Timed off function • good’sleep function
17
Cleaning and Maintenance
20
Cleaning at a Glance
20
Troubleshooting22
Technical Specifications
24
Installation25
Safety Information on Installation
25
Preparation27
Step 1.1 Choosing the installation location
Step 1.2 Packing and Unpacking
Step 1.3 Checking and preparing accessories and tools
Step 1.4 Drilling a hole through the wall
Step 1.5 Taping the pipes, cables, and drain hose
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Indoor Unit Installation
Step 2.1 Connecting the cables (assembly cable)
Step 2.2 Optional: Extending the power cable
Step 2.3 Installing and connecting the drain hose
Step 2.4 Optional: Extending the drain hose
Step 2.5 Optional: Changing the direction of the drain hose
Step 2.6 Installing and connecting the assembly pipes to the refrigerant pipes (assembly pipe)
Step 2.7 Shortening or extending the refrigerant pipes (assembly pipe)
Step 2.8 Fixing the installation plate
31
Outdoor Unit Installation
Step 3.1 Fixing the outdoor unit in place
Step 3.2 Connecting the cables and the refrigerant pipes
Step 3.3 Evacuating the air
Step 3.4 Adding refrigerant
38
Installation Inspection
Step 4.1 Performing the gas leak tests
Step 4.2 Running the Smart Install mode
Step 4.3 Performing final check and trial operation
41
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.
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.
The lowest set temp. is limited to 20 degree in the UAE according to UAE.S 5010-1:2016.
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Safety Information
Safety Information
Before using your new air conditioner, please read this manual thoroughly to ensure that you know how to
safely and efficiently operate the extensive features and functions of your new appliance.
Because the following operating instructions cover various models, the characteristics of your air conditioner
may differ slightly from those described in this manual. If you have any questions, call your nearest contact
centre or find help and information online at www.samsung.com.
WARNING
Hazards or unsafe practices that may result in severe personal injury or death.
CAUTION
Hazards or unsafe practices that may result in minor personal injury or property damage.
Follow directions.
Do NOT attempt.
Make sure the machine is grounded to prevent electric shock.
Cut off the power supply.
Do NOT disassemble.
FOR INSTALLATION
WARNING
Use a power cord with this product's power specifications or higher and use the power cord for this
appliance only. In addition, do not use an extension cord.
• Extending the power cord may result in electric shock or fire.
• Do not use an electric transformer. This may result in electric shock or fire.
• If the voltage/frequency/rated current condition is different, it may cause fire.
The installation of this appliance must be performed by a qualified technician or service company.
• Failing to do so may result in electric shock, fire, explosion, problems with the product, or injury and
may also void warranty on the installed product.
Install an Isolation Switch next to the Air Conditioner (but not on the panels of the Air Conditioner)
and circuit breaker dedicated to the air conditioner.
• Failing to do so may result in electric shock or fire.
Fix the outdoor unit firmly so that the electric part of the outdoor unit is not exposed.
• Failing to do so may result in electric shock, fire, explosion, or problems with the product.
Do not install this appliance near a heater, or inflammable material. Do not install this appliance in a
humid, oily or dusty location, in a location exposed to direct sunlight and water (or rain). Do not install
this appliance in a location where gas may leak.
• This may result in electric shock or fire.
Never install the outdoor unit in a location such as on a high external wall where it could fall.
• If the outdoor unit falls, it may result in injury, death or property damage.
This appliance must be properly grounded. Do not ground the appliance to a gas pipe, plastic water
pipe, or telephone line.
• Failing to do so may result in electric shock, fire, and explosion.
• Make sure to use a socket-outlet with ground.
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Install your appliance on a level and hard floor that can support its weight.
• Failing to do so may result in abnormal vibrations, noise, or problems with the product.
Install the drain hose properly so that water drains correctly.
• Failing to do so may result in water overflowing and property damage. Avoid adding drain to waste
pipes as odours may arise in the future.
When installing the outdoor unit, make sure to connect the drain hose so that draining is performed
correctly.
• The water generated during heating by the outdoor unit may overflow and result in property
damage.
In particular, in winter, if a block of ice falls, it may result in injury, death or property damage.
FOR POWER SUPPLY
WARNING
When the circuit breaker is damaged, contact your nearest service centre.
Do not pull or excessively bend the power line. Do not twist or tie the power line. Do not hook the
power line over a metal object, place a heavy object on the power line, insert the power line between
objects, or push the power line into the space behind the appliance.
• This may result in electric shock or fire.
CAUTION
When not using the air conditioner for a long period of time or during a thunder/lightning storm, cut
the power at the circuit breaker.
• Failing to do so may result in electric shock or fire.
FOR USING
WARNING
If the appliance is flooded, please contact your nearest service centre.
• Failing to do so may result in electric shock or fire.
If the appliance generates a strange noise, a burning smell or smoke, cut off the power supply
immediately and contact the nearest service centre.
• Failing to do so may result in electric shock or fire.
In the event of a gas leak (such as propane gas, LP gas, etc.), ventilate immediately without touching
the power line. Do not touch the appliance or power line.
• Do not use a ventilating fan.
• A spark may result in an explosion or fire.
To reinstall the air conditioner, please contact your nearest service centre.
• Failing to do so may result in problems with the product, water leakage, electric shock, or fire.
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Safety Information
CAUTION
Safety Information
• Delivery service for the product is not provided. If you reinstall the product in another location,
additional construction expenses and an installation fee will be charged.
• Especially, when you wish to install the product in an unusual location such as in an industrial area
or near the seaside where it is exposed to salt in the air, please contact your nearest service centre.
Do not touch the circuit breaker with wet hands.
• This may result in electric shock.
Do not turn the air conditioner off with the circuit breaker while it is operating.
• Turning the air conditioner off and then on again with the circuit breaker may cause a spark and
result in electric shock or fire.
After unpacking the air conditioner, keep all packaging materials well out of the reach of children, as
packaging materials can be dangerous to children.
• If a child places a bag over its head, it may result in suffocation.
Do not touch the air flow blade with your hands or fingers during heating.
• This may result in electric shock or burns.
Do not insert your fingers or foreign substances into the air inlet/outlet of the air conditioner.
• Take special care that children do not injure themselves by inserting their fingers into the product.
Do not strike or pull the air conditioner with excessive force.
• This may result in fire, injury, or problems with the product.
Do not place an object near the outdoor unit that allows children to climb onto the machine.
• This may result in children seriously injuring themselves.
Do not use this air conditioner for long periods of time in badly ventilated locations or near infirm
people.
• Since this may be dangerous due to a lack of oxygen, open a window at least once an hour.
If any foreign substance such as water has entered the appliance, cut off the power supply and
contact the nearest service centre.
• Failing to do so may result in electric shock or fire.
Do not attempt to repair, disassemble, or modify the appliance yourself.
• Do not use any fuse (such as cooper, steel wire, etc.) other than the standard fuse.
• Failing to do so may result in electric shock, fire, problems with the product, or injury.
CAUTION
Do not place objects or devices under the indoor unit.
• Water dripping from the indoor unit may result in fire or property damage.
Check that the installation frame of the outdoor unit is not broken at least once a year.
• Failing to do so may result in injury, death or property damage.
• To prevent personal injury, make sure that you change the directions of the horizontal air flow
blades after stopping the movements of the vertical air flow blade.
Max current is measured according to IEC standard for safety and current is measured according to
ISO standard for energy efficiency.
Do not stand on top of the appliance or place objects (such as laundry, lighted candles, lighted
cigarettes, dishes, chemicals, metal objects, etc.) on the appliance.
• This may result in electric shock, fire, problems with the product, or injury.
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Do not operate the appliance with wet hands.
• This may result in electric shock.
Do not spray volatile material such as insecticide onto the surface of the appliance.
• As well as being harmful to humans, it may also result in electric shock, fire or problems with the
product.
Do not drink the water from the air conditioner.
• The water may be harmful to humans.
Do not apply a strong impact to the remote control and do not disassemble the remote control.
Do not touch the pipes connected with the product.
• This may result in burns or injury.
Do not use this air conditioner to preserve precision equipment, food, animals, plants or cosmetics, or
for any other unusual purposes.
• This may result in property damage.
Avoid directly exposing humans, animals or plants to the air flow from the air conditioner for long
periods of time.
• This may result in harm to humans, animals or plants.
This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, without 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.
FOR CLEANING
WARNING
Do not clean the appliance by spraying water directly onto it. Do not use benzene, thinner or alcohol
to clean the appliance.
• This may result in discolouration, deformation, damage, electric shock or fire.
Before cleaning or performing maintenance, cut off the power supply and wait until the fan stops.
• Failing to do so may result in electric shock or fire.
CAUTION
Take care when cleaning the surface of the heat exchanger of the outdoor unit since it has sharp
edges.
• This should be done by a qualified technician. Please contact your installer or service centre.
Do not clean the inside of the air conditioner by yourself.
• For cleaning inside the appliance, contact your nearest service centre.
• When cleaning the filter, refer to the descriptions in the ‘Cleaning at a Glance’ section.
• Failing to do so may result in damage, electric shock or fire.
• Make sure to prevent any injury from sharp edges of the surface when handling the heat exchanger.
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Safety Information
Indoor Unit Overview
The actual product may differ slightly from the image depicted below.
01
05
02
At a Glance
06
07
03
04
01 Air intake
05 Room temperature sensor
02 Air filter
06 Display
03 Air flow blade (up and down)
07 Power button /
Remote control receiver
04 Air flow blade (left and right)
Display
01
01 good'sleep indicator
02 Timer indicator
Auto clean indicator
02
03
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03 Operation indicator
Remote Control Overview
01 Set temperature indicator
05
01
06
02
03
02 Timer option indicator
03 Operation mode indicator
07
04 Options indicator
08
05 Low battery indicator
06 Transmit indicator
04
10
09
08 Vertical air swing indicator
15
09 Settings indicator
16
10 Power button
11
11
17
At a Glance
07 Fan speed indicator
Temperature button
12 Options button
13 Timer button
12
18
19
13
14 Direction button / Selection button
15 Vertical air swing button
16 Mode button
17 Fan speed button
20
18 Single user button
19 Settings button
14
20 SET button
Inserting batteries
NOTE
• The descriptions in this manual are primarily
made based on the remote control buttons.
• Although Heat, Quiet, Virus doctor( ), d’light
Cool, Usage, Filter Reset, Display is displayed on
the remote control display, it is not available on
this model.
two 1.5V AAA type batteries
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Remote Control Operation
You can use the air conditioner easily by selecting a mode and then by controlling the temperature, fan speed,
and air direction.
Operation modes
You can change the current mode between Auto, Cool, Dry and Fan by
pressing the
button.
Controlling temperature
At a Glance
You can control the temperature in each mode as follows:
Mode
Auto/Cool/Dry
Fan
Temperature control
Adjust by 1 °C between 20 °C and 28 °C.
You cannot control the temperature.
NOTE
You can use the Cool and Dry modes in the following conditions:
Mode
Cool
Dry
Indoor
temperature
20 °C to 32 °C
20 °C to 32 °C
Outdoor
temperature
20 °C to 52 °C
20 °C to 52 °C
Indoor humidity
80% or less relative
humidity
_
• If the air conditioner operates in a high humidity environment in the
Cool mode for an extended period of time, condensation may occur.
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Controlling fan speed
You can select the following fan speeds in each mode:
Mode
Available fan speeds
(Auto)
Cool
(Auto),
(Turbo)
Fan
(Low),
(Low),
(Med),
(High),
(Med),
(High),
(Turbo)
At a Glance
Auto/Dry
Controlling air flow direction
Vertical air flow
Keep the vertical air flow in a constant direction by stopping the
movements of the vertical air flow blade.
In operation
►
NOTE
• If you adjust the vertical air flow blade manually, it may not close
completely when you turn off the air conditioner.
Horizontal air flow (manual)
Keep the horizontal air flow in a constant direction by changing the
directions of the horizontal air flow blades manually.
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Cooling Operation
The smart and powerful cooling functions of the Samsung air conditioner keep an enclosed space cool and
comfortable.
Cool mode
Use the Cool mode to stay cool in hot weather.
►
► Select Cool.
NOTE
• For comfort, keep the temperature difference between the indoor
and outdoor air within 5 °C in the Cool mode.
Power Smart Features
• After selecting the Cool mode, select a function, temperature, and
fan speed that you want to apply.
–– To cool your room quickly, select a low temperature and a strong
fan speed.
–– To save energy, select a high temperature and a weak fan speed.
2-Step cooling function
Use the 2-Step cooling function to quickly reach the set temperature.
The air conditioner automatically adjusts the fan speed and air flow
direction. You can select this function only when the Cool mode is
running.
In the Cool mode ►
Select 2-Step. ►
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►
►
Dehumidifying Operation
The dehumidifying function of the Samsung air conditioner keeps an enclosed space dry and comfortable.
Dry mode
Use the Dry mode in rainy or humid weather.
►
► Select Dry.
NOTE
• The lower the set temperature is, the greater the dehumidifying
capacity is. When the current humidity seems to be high, adjust the
set temperature to a low temperature.
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Power Smart Features
• You cannot use the Dry mode for heating. The Dry mode is designed
to produce a cooling side-effect.
Quick Smart Features
There is a variety of extra functionality provided by the Samsung air conditioner.
Auto mode
Use the Auto mode when you want the air conditioner to automatically
control the operation. The air conditioner will provide the most
comfortable atmosphere that it can.
►
► Select Auto.
NOTE
Power Smart Features
• When the indoor temperature seems to be higher or lower than the
set point, the air conditioner automatically produces cool air to cool
down the indoor temperature.
Fan mode
Use the Fan mode to run the air conditioner like a common fan. The air
conditioner provides a natural breeze.
►
► Select Fan.
NOTE
• If the air conditioner will not be used for an extended period of time,
dry the air conditioner by running it in the Fan mode for 3 or 4 hours.
• The outdoor unit is designed not to operate in the Fan mode to
prevent cold air from entering through the unit. This is a normal
operation and not a fault with the air conditioner.
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Fast function
Use the Fast function to quickly cool your room. This function is the
most powerful cooling function provided by the air conditioner. You can
select this function in the Cool mode.
In the Cool mode ►
►
►
Select Fast. ►
Comfort function
Use the Comfort function when you feel the current cooling effect is too
strong. The air conditioner provides a mild cooling. You can select this
function in the Cool mode.
In the Cool mode ►
►
►
Select Comfort. ►
NOTE
• You can change the set temperature and the air flow direction.
• You cannot change the fan speed.
• If you select the Comfort function while such functions as 2-Step
cooling, Fast, Single user, or good'sleep are running, these functions
are cancelled.
• If you feel cooling effect in the Comfort function is weak, cancel the
Comfort function.
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Power Smart Features
NOTE
• If you select the Fast function while such functions as 2-Step
cooling, Comfort, Single user, or good'sleep are running, these
functions are cancelled.
• You can change the air flow direction.
• You cannot change the set temperature and the fan speed.
Beep sound function
Use the Beep sound function to turn on or off the beep sound that
plays when you press a button on the remote control.
►
Power Smart Features
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► Select Beep. ►
Energy-Saving Operation
The smart energy-saving functions of the Samsung air conditioner reduce electricity consumption.
Single user function
Use the Single user function to reduce electricity consumption while
staying cool. You can select this function in the Cool mode.
In the Cool mode ►
NOTE
• When the Single user function starts, the
pattern appears
on the remote control for a few seconds, and vertical air swing
begins automatically.
• If you select the Single user while such function as 2-Step cooling,
Fast, Comfort, or good'sleep are running, these modes are
cancelled.
• When the Single user function is turned on in the Cool mode while
the set temperature is set to lower than 24 °C, the set temperature
is automatically raised to 24 °C. But if the set temperature is set to
between 25 °C and 28 °C, it remains the same.
• Even after you turn off the Single user function, vertical air swing
continues until you turn it off with the Vertical air swing (
)
button.
• You can also start the Single user function by pressing the Options
(
) button.
In the Cool mode ►
►
►
Select Single user. ►
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Energy-Saving Features
• After selecting the Single user function, you can change the set
temperature (24 °C to 28 °C in the Cool mode), fan speed, and
vertical air flow direction.
Timed on/Timed off function
Use the Timed on/Timed off to turn on or off the air conditioner after
the time that you set.
(Select On or Off among On, Off, and
.) ►
(Set the on/off time.) ►
• Press the
(Timer) button to change the current function
between On, Off, and
(good’sleep).
(good’sleep) is displayed in
the Cool mode only.
NOTE
• You can set a time between 0.5 and 24 hours. Set the time interval
to 0.0 to cancel the Timed on/off function.
Energy-Saving Features
• Once you start the Timed on/off function, the Timer (
displayed on the indoor unit display.
) indicator is
• After starting the Timed on function, you can change the mode and
the set temperature. You cannot change the set temperature while
the Fan mode is running.
• You cannot set the same time for both of the Timed on and Timed
off functions.
Combining Timed on and Timed off
Example) Timed on: 3 hours, Timed off: 5 hours
When the air
conditioner The air conditioner turns on after 3 hours from the
moment you start Timed on/off, remains on for 2
is off
hours, then turns off automatically.
Example) Timed on: 3 hours, Timed off: 1 hour
When the air
conditioner The air conditioner turns off after 1 hour from the
moment you start Timed on/off, then turns on after 2
is on
hours from the moment it is turned off.
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good’sleep function
Use the good'sleep function to get a good sleep at night and to save
energy. You can select this function in the Cool mode.
In the Cool mode ►
(Select
among On, Off, ►
and
.)
(Set the operation time.) ►
• Press the
(Timer) button to change the current function
between On, Off, and
(good’sleep).
NOTE
• You can adjust the set temperature by 1 °C between 20 °C and 28 °C.
Mode
Recommended set
temperature
Optimal set
temperature
Cool
25 °C to 27 °C
26 °C
• Once you start the good’sleep function, the good’sleep(
appears on the indoor unit display.
) indicator
• You can set the operation time to between 0.5 and 12 hours. Set the
operation time to 0.0 to cancel the good’sleep function.
• The default operation time for the good’sleep function in the
Cool mode is 8 hours. If the operation time is set to over 5 hours,
the Wake up function begins 1 hour before the set time. The air
conditioner stops automatically when the operation time expires.
• When the Timed on, Timed off, and good'sleep functions are
overlapped, the air conditioner operates its timer with only the
function that you have started most recently.
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Energy-Saving Features
• The recommended and optimal set temperatures in the good’sleep
function are as follows:
Cleaning at a Glance
Running Auto clean
Cleaning duration (minutes)
Auto (Cool), Cool, Dry
30
Fan
15
NOTE
• When you set the Auto clean timer, Clean blinks and then disappears on the remote control display. The
Timer ( ) indicator also appears on the indoor unit display.
• When the air conditioner is off, Auto clean starts immediately when it is selected. When the air conditioner is
on, Auto clean starts as soon as the air conditioner stops running.
• During Auto clean, the indoor fan continues to run, and air flow blades remain open to expel ambient air.
Cleaning the indoor unit exterior and outdoor unit heat exterior
Cleaning and Maintenance
Tepid damp cloth
Soft brush
Before cleaning, be sure to turn off the equipment
and disconnect the power plug.
Spray water to clean the dust.
CAUTION
• Do not clean the display by using alkaline detergent.
• Do not use sulphuric acid, hydrochloric acid, or organic solvents (such as thinner, kerosene, and acetone) to
clean the surfaces. Do not put any stickers on it as this can damage the surface of the air conditioner.
• When you clean and inspect the heat exchanger on the outdoor unit, contact the local service centre for
help.
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Cleaning the filter
Vacuum cleaner
Soft brush
30 minutes
Mild detergent
CAUTION
• Do not scrub the air filter with a brush or other cleaning utensil. This may damage the filter.
• Do not expose the air filter to direct sunlight when drying it.
NOTE
• Clean the air filter every 2 weeks. Cleaning term may vary depending on the usage and environmental
conditions.
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Cleaning and Maintenance
• If the air filter dries in a humid area, it may produce offensive odours. Clean it again and dry it in a wellventilated area.
Troubleshooting
If the air conditioner operates abnormally, refer to the following chart to save time and unnecessary expenses.
Problem
Solution
Cleaning and Maintenance
The air conditioner
does not work at all.
• Check the power status, then operate the air conditioner again.
• Switch on the circuit breaker, plug in the power cord, then operate the air
conditioner again.
• Make sure that the isolator is turned on.
• Check whether the Timed off function is running. Operate the air conditioner
again by pressing the Power button.
I cannot change the
temperature.
• Check whether the Fan or Fast mode is running. In these modes, the air
conditioner controls the set temperature automatically, and you cannot change
the set temperature.
Cool air does not
come out of the air
conditioner.
• Check whether the set temperature is higher in the Cool mode than the current
temperature. Press the Temperature button on the remote control to change
the set temperature.
• Check whether the air filter is blocked with dirt. If the air filter is blocked, the
cooling performance may decrease. Remove dirt regularly.
• Check whether the outdoor unit is covered or installed near obstacles. Remove
the coverings and obstacles.
• Check whether doors or windows are open. This may cause poor cooling
performance. Close the doors and windows.
• Check whether the air conditioner is turned on immediately after the cooling
operation stops. In this case, only the fan runs to protect the outdoor unit
compressor.
• Check whether the pipe length is too long. When the pipe length exceeds the
maximum pipe length, the cooling performance may decrease.
I cannot change the
air flow direction.
• Check whether the good'sleep function is running. While this function is
running, you cannot control the air flow direction.
I cannot change the
fan speed.
• When the Auto, Dry, or Fast mode is running or the good'sleep function
is running in the Cool mode, the air conditioner controls the fan speed
automatically and you cannot change the fan speed.
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Problem
Solution
The Timed on/off
function does not
work.
• Check whether you pressed the SET button on the remote control after setting
the time.
The indicator blinks
continuously.
• Press the Power button to turn off the air conditioner or disconnect the power
plug. If the indicator is still blinking, contact the service centre.
Odours permeate
in the room during
operation.
• Check whether the air conditioner is running in a smoky area. Ventilate the
room or operate the air conditioner in the Fan mode for 3 to 4 hours. (There
are no components used in the air conditioner that emit a strong odour.)
• Check whether the drains are clean. Clean them regularly.
An error is indicated.
• If the indoor unit indicator blinks, contact the nearest service centre. Be sure
to pass the error code to the service centre.
Noise is generated.
• When refrigerant flow changes, noise may be generated, depending on the
status of the air conditioner. This is a normal operation.
Water drops from the
pipe connections of
the outdoor unit.
• Condensation may develop when the ambient temperature changes
excessively. This is a normal operation.
Cleaning and Maintenance
The remote control
does not work.
• Replace the batteries in the remote control with new ones.
• Make sure that nothing is blocking the remote control sensor.
• Check whether there are strong lighting apparatus near the air conditioner.
Strong light which comes from fluorescent bulbs or neon signs may interrupt
the electric waves.
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Technical Specifications
MODEL
AR18MRFHFWK/GU
CLIMATE CLASS
CAPACITY
COOLING
T1
T3
T1
T3
19000 Btu/h
15600 Btu/h
23200 Btu/h
20000 Btu/h
HEATING (H1)
RATED VOLTAGE & FREQUENCY
RATED CURRENT
RATED POWER
INPUT
EER / COP
REFRIGERANT
COOLING
220-240 V~ 50 Hz
9.6 A
10.5 A
2200 W
2350 W
9.90 (Btu/h)/W
7.09 (Btu/h)/W
9.87 (Btu/h)/W
-
7.09 (Btu/h)/W
-
TYPE
R-410A
CHARGE
Cleaning and Maintenance
OUTDOOR
2820 W
-
HEATING (H1)
TEMPERATURE
12.3 A
-
1920 W
HEATING (H1)
INDOOR
870 g [30.69 oz]
1150 g [40.57 oz]
1920 kWh/Year
2200 kWh/Year
2350 kWh/Year
2820 kWh/Year
27 C
-
29 C
-
27 C
-
29 oC
-
19 oC
-
19 oC
-
19 oC
-
19 oC
-
35 oC
-
46 oC
-
35 oC
-
46 oC
-
24 oC
-
24 oC
-
24 oC
-
24 oC
-
o
o
INDOOR
11.8 kg
11.9 kg
OUTDOOR
36.2 kg
55.9 kg
INDOOR
1065 x 298 x 243 mm
1065 x 298 x 243 mm
OUTDOOR
720 x 548 x 285 mm
880 x 793 x 310 mm
COUNTRY OF ORIGIN
24 English
220-240 V~ 50 Hz
-
o
DIMENSIONS OF
THE UNIT
-
8.5A
COOLING
ANNUAL ENERGY CONSUMPTION
NET WEIGHT
-
HEATING (H1)
COOLING
AR24MRFHFWK/GU
THAILAND
Safety Information on Installation
Carefully follow the precautions listed below because
they are essential to guarantee the safety of both the
air conditioner and the workers.
• Always disconnect the air conditioner from the
power supply before servicing it or accessing its
internal components.
• Verify that installation and testing operations are
performed by qualified personnel.
• Verify that the air conditioner is not installed in an
easily accessible area.
General information
Installation of the unit
• IMPORTANT: When installing the unit, always
remember to connect first the refrigerant tubes,
then the electrical lines. Always disassemble the
electric lines before the refrigerant tubes.
• Upon receipt, inspect the product to verify that
it has not been damaged during transport. If
the product appears damaged, DO NOT INSTALL
it and immediately report the damage to the
carrier or retailer (if the installer or the authorised
technician has collected the material from the
retailer.)
• After completing the installation, always carry out
a functional test and provide the instructions on
how to operate the air conditioner to the user.
• Do not use the air conditioner in environments
with hazardous substances or close to equipment
that release free flames to avoid the occurrence of
fires, explosions or injuries.
• Our units must be installed in compliance with
the spaces indicated in the installation manual
to ensure either accessibility from both sides
or ability to perform routine maintenance and
repairs. The units’ components must be accessible
and that can be disassembled in conditions of
complete safety either for people or things. For
English 25
Installation
• Carefully read the content of this manual before
installing the air conditioner and store the manual
in a safe place in order to be able to use it as
reference after installation.
• For maximum safety, installers should always
carefully read the following warnings.
• Store the operation and installation manual in
a safe location and remember to hand it over to
the new owner if the air conditioner is sold or
transferred.
• This manual explains how to install an indoor unit
with a split system with two SAMSUNG units. The
use of other types of units with different control
systems may damage the units and invalidate
the warranty. The manufacturer shall not be
responsible for damages arising from the use of
non compliant units.
• The manufacturer shall not be responsible for
damage originating from unauthorised changes
or the improper connection of electric and
requirements set forth in the “Operating limits”
table, included in the manual, shall immediately
invalidate the warranty.
• The air conditioner should be used only for the
applications for which it has been designed: the
indoor unit is not suitable to be installed in areas
used for laundry.
• Do not use the units if damaged. If problems
occur, switch the unit off and disconnect it from
the power supply.
• In order to help prevent electric shocks, fires
or injuries, always stop the unit, disable the
protection switch and contact SAMSUNG’s
technical support if the unit produces smoke, if
the power cable is hot or damaged or if the unit is
very noisy.
• Always remember to inspect the unit, electric
connections, refrigerant tubes and protections
regularly. These operations should be performed
by qualified personnel only.
• The unit contains moving parts, which should
always be kept out of the reach of children.
• Do not attempt to repair, move, alter or reinstall
the unit. If performed by unauthorised personnel,
these operations may cause electric shocks or
fires.
• Do not place containers with liquids or other
objects on the unit.
• All the materials used for the manufacture and
packaging of the air conditioner are recyclable.
• The packing material and exhaust batteries of the
remote control (optional) must be disposed of in
accordance with current laws.
• The air conditioner contains a refrigerant that has
to be disposed of as special waste. At the end of
its life cycle, the air conditioner must be disposed
of in authorised centres or returned to the retailer
so that it can be disposed of correctly and safely.
this reason, where it is not observed as indicated
into the Installation Manual, the cost necessary
to reach and repair the unit (in safety, as required
by current regulations in force) with slings, trucks,
scaffolding or any other means of elevation won’t
be considered in-warranty and will be charged to
end user.
• When installing the outdoor unit at the seaside,
make sure that it is not directly exposed to sea
breeze. If you cannot find an adequate place free
from direct sea breeze, construct a protection
wall or a protective fence.
–– Install the outdoor unit in a place (such as
near buildings etc.) where it can be protected
from sea breeze. Failure to do so may cause a
damage to the outdoor unit.
Sea breeze
Sea breeze
Outdoor unit
Sea
Sea
Outdoor unit
• If you cannot avoid installing the outdoor unit at
the seaside, construct a protection wall around to
block the sea breeze.
• Construct a protection wall with a solid material
such as concrete to block the sea breeze. Make
sure that the height and the width of the wall
are 1.5 times larger than the size of the outdoor
unit. Also, secure a space larger than 600 mm
between the protection wall and the outdoor unit
for exhausted air to ventilate.
Sea breeze
Installation
Sea
Protection wall
Outdoor unit
Outdoor unit
Protection wall
• Install the unit in a place where water can drain
smoothly.
• If you have any difficulty finding installation
location as prescribed above, contact your
manufacturer for details.
• Be sure to clean the sea water and the dust on the
heat exchanger of the outdoor unit and apply a
corrosion inhibitor on it. (At least once in a year.)
26 English
Power supply line, fuse, or circuit
breaker
• Always make sure that the power supply is
compliant with current safety standards. Always
install the air conditioner in compliance with
current local safety standards.
• Always verify that a suitable grounding
connection is available.
• Verify that the voltage and frequency of the
power supply comply with the specifications and
that the installed power is sufficient to ensure
the operation of any other domestic appliance
connected to the same electric lines.
• Always verify that the cut-off and protection
switches are suitably dimensioned.
• Verify that the air conditioner is connected to the
power supply in accordance with the instructions
provided in the wiring diagram included in the
manual.
• Always verify that electric connections (cable
entry, section of leads, protections…) are
compliant with the electric specifications and
with the instructions provided in the wiring
scheme. Always verify that all connections
comply with the standards applicable to the
installation of air conditioners
• Be sure not to perform power cable modification,
extension wiring, and multiple wire connection.
–– It may cause electric shock or fire due to poor
connection, poor insulation, or current limit
override.
–– When extension wiring is required due
to power line damage, refer to "Step 2.2
Optional:Extending the power cable" in the
installation manual.
Preparation
Step 1.1 Choosing the installation
location
Overview of installation location requirements
CAUTION
• Comply with the length and height limits
described in the figure above.
Minimum clearances for the outdoor unit
Wall
100 mm or more
125 mm
or more
125 mm
or more
Minimum clearance in mm
300
Drain hose hole
You can select the direction of
draining (left or right).
600
Maximum pipe height: 15 m
Maximum pipe length: 30 m
Air flow direction
Make at least one round to
reduce noise and vibration.
Top view
Side view
When installing 1 outdoor unit (6 cases)
(Unit: mm)
1500
300
The actual units may look different from
the images depicted here.
(Unit : m)
Pipe height
3
20
8
Indoor
Unit
Cut insulation to have
rainwater drained
Make a U-trap (A) on the
pipe (which is connected to
the indoor unit) at outer wall
and cut the bottom part of
the insulation (about 10 mm)
to prevent rainwater from
getting inside through the
insulation.
150
300
600
English 27
Installation
Outer wall
CAUTION
2000
1500
7
✴✴24✴✴
Outdoor
Unit
Maximum
300
15
1500
Maximum
3
300
Minimum
✴✴18✴✴
500
Model
Pipe length
When installing more than 1 outdoor unit (5 cases)
600
3000
3000
Outdoor unit
Packing the unit as below procedure
1 Put the outdoor unit onto the cushion-bottom.
2 Put the cushion-top onto the outdoor unit
3 Put the packing case from the top of set.
4 Seal the packing case.
600
300
1500
600
200
1500
1500
300
(Unit: mm)
600
500
500
300
600
Unpacking the unit as below procedure
4 Open the packing case.
5 Take out the both side of cushion(Left and Right).
6 Move the set from the packing case.
Unpacking the unit as below procedure
1 Take out the packing case from the set.
2 Take out the cushion-top.
3 Move the set from the cushion-bottom
600
300
300
Step 1.3 Checking and preparing
accessories and tools
Accessories
Accessories in the indoor unit package
Installation plate (1)
Remote control (1)
Remote control holder (1)
Remote control battery (2)
User and Installation Manual (1)
M4 x 12 tapping screw (2)
CAUTION
• If the outdoor unit is installed with any
insufficient clearance, it may generate sound and
affect the whole product.
• Be sure to install the outdoor unit in a level place
where its vibration does not affect the whole
product
Installation
Step 1.2 Packing and Unpacking
Indoor unit
Packing the unit as below procedure
1 Put the indoor unit onto the packing case.
2 Assemble cushion-both side of indoor unit. (Left
and Right)
3 Seal the packing case.
28 English
Optional accessories
Insulated assembly pipe,
Ø 6.35 mm (1)
Insulated assembly pipe,
Ø 15.88 mm (1)
✴✴24✴✴
Insulated assembly pipe,
Ø 12.70 mm (1)
✴✴18✴✴
Drain Hose, 2 m long (1)
NOTE
• A flare nut is attached to the end of each pipe
of an evaporator or a service port. Use flare nuts
when connecting the pipes.
• Wire assembly cables are optional. If they are not
supplied, use standard cables.
• The drain plug and the rubber legs are included
only when the air conditioner is supplied without
assembly pipes.
• If these accessories are supplied, they are in the
accessory package or outdoor unit package.
Tools
Pipe clamp A (3)
Pipe clamp B (3)
Vinyl tape (2)
Putty 100 g (1)
PE T3 foam tube insulation (1)
M4 x 25 tapped screw (6)
Drain plug (1)
Cement nail (6)
3-wire assembly cable (1)
Tools for test operation
• Thermometer
• Resistance meter
• Electroscope
Installation
Accessories in the outdoor unit package
General tools
• Vacuum pump
(Backward flowing prevention)
• Manifold gauge
• Stud finder
• Torque wrench
• Pipe cutter
• Reamer
• Pipe bender
• Spirit level
• Screwdriver
• Spanner
• Drill
• L-wrench
• Measuring tape
Rubber leg (4)
English 29
Step 1.4 Drilling a hole through the wall
Before fixing the installation plate to a wall and
then fixing the indoor unit to the installation plate,
a window frame, or a gypsum board, you must
determine the position of a hole (with 65 mm inner
diameter) through which the pipe bundle (consisting
of power and communication cables, refrigerant
pipes, and drain hose) will pass and then drill that
hole.
1 Determine the position of a 65 mm hole in
consideration of the possible directions of the
pipe bundle and the minimum distances between
the hole and the installation plate.
2 Drill the hole.
CAUTION
• Be sure to drill only one hole.
• Make sure that the hole slants downwards so that
the drain hose slants downwards to drain water
well.
Wall
Indoor unit
Drain hose
<The hole slants downwards>
Left
Right
Step 1.5 Taping the pipes, cables, and
drain hose
Rear right or left
1 Wrap foam insulation on parts without insulation
on the ends of the refrigerant pipes, as shown in
the figure. This wrapping minimises condensation
problem.
Bottom right
<Possible directions of the pipe bundle>
CAUTION
Insulation
• If changing the pipe direction from left to right,
do not drastically bent it but slowly turn it in the
opposite direction as shown. Otherwise, the pipe
may be damaged in the process.
Pipe bundle hole
Refrigerant pipes
2 Wind the refrigerant pipes, power cable,
communication cable and drain hose with vinyl
tape to make a pipe bundle.
Installation
Installation plate
<Minimum distances between the
hole and the installation plate>
Vinyl tape
(Unit : mm)
Model
A
B
C
D
Power and communication cables
(assembly cable)
✴✴18/24✴✴
38
126
70
38
Drain hose
Pipe bundle hole: Ø 65 mm
30 English
Refrigerant pipes
(assembly pipe)
Indoor Unit Installation
Step 2.1 Connecting the cables
(assembly cable)
• When performing electrical and earthing works,
be sure to comply with the 'technical standards of
electrical installations' and the 'wiring regulations'
in the local regulations.
• Tighten the terminal block screw to 1.2-1.8 N•m
(1.2-1.8 kgf•cm).
Control box
Before
connecting
Correct
Upside down Damaged
Non-circular
After
connecting
Correct
Correct
Upside down Non-fitted
(Front view) (Side view)
<Circular terminal>
N(1)
1
Fasten the screws for the wire holders.
3G X 2.5 mm², H05VV-F
Indoor-to-outdoor
power cable
3G X 2.5 mm², H07RN-F
Type GL
25A
CAUTION
• For the terminal block wiring, use a wire with a
ring terminal socket only. Regular wires without
a ring terminal socket may become a hazard due
to overheating of the electrical contact during
installation.
• If you need to extend the pipe, be sure to extend
the cable, too. The maximum length of each of the
cable and pipe used should not exceed 15 metres
(✴✴18✴✴) and 20 metres (✴✴24✴✴).
• Do not connect two or more different cables to
extend the length. This connection may cause fire.
• Each circular terminal must match the size of its
corresponding screw in the terminal block.
• After connecting the cables, make sure that
terminal numbers on the indoor and outdoor units
match.
• Ensure that power and communication cables are
separated, they must not be in the same cable.
WARNING
• Connect the wires firmly so that wires cannot be
pulled out easily. (If they are loose, it could cause
burn-out of the wires.)
English 31
Installation
Power cable
(Indoor unit)
NOTE
• Each wire is labelled with the corresponding
terminal number.
• Use shield cable (Category 5; less than 50pF/m)
for noisy environmental site.
• Power supply cords of parts of appliances
for outdoor use shall not be lighter than
polychloroprene sheathed flexible cord. (Code
designation IEC: 60227 IEC53/CENELEC: H05VV-F,
60245 IEC66/CENELEC: H07RN-F)
• Power & Communication cable shall not exceed
30m.
Step 2.2 Optional: Extending the power
cable
1 Prepare the following tools.
Tools
Spec
Crimping
pliers
MH-14
Connection
sleeve (mm)
20xØ6.5 (HxOD)
Insulation tape
Width 19 mm
Contraction
tube (mm)
70xØ8.0 (LxOD)
4 Using a crimping tool, compress the two points
and flip it over and compress another two points
in the same location.
• The compression dimension should be 8.0.
Shape
Compression
dimension
• After compressing it, pull both sides of the
wire to make sure it is firmly pressed.
Method 1
2 As shown in the figure, peel off the shields from
the rubber and wire of the power cable.
• Peel off 20 mm of cable shields from the
pre-installed tube.
CAUTION
• For information about the power cable
specifications for indoor and outdoor units,
refer to the installation manual.
• After peeling off cable wires from the preinstalled tube, insert a contraction tube.
Method 2
Compress it 4 times.
Compress it 4 times.
5 mm
5 mm
5 Wrap it with the insulation tape twice or more
and position your contraction tube in the middle
of the insulation tape.
Three or more layers of insulation are required.
Méthode 1
Méthode 2
Ruban d'isolation
Ruban d'isolation
40 mm
Power cable
35 mm
6 Apply heat to the contraction tube to contract it.
20
20
20
60
Contraction tube
120
180
(Unit: mm)
7 After tube contraction work is completed, wrap
it with the insulation tape to finish.
Wire tube power cable
20
(Unit: mm)
Installation
3 Insert both sides of core wire of the power cable
into the connection sleeve.
• Method 1: Push the core wire into the sleeve
from both sides.
• Method 2: Twist the wire cores together and
push it into the sleeve.
Method 1
Connection sleeve
32 English
Method 2
Connection sleeve
Insulation tape
CAUTION
• Make sure that the connection parts are not
exposed to outside.
• Be sure to use insulation tape and a contraction
tube made of approved reinforced insulating
materials that have the same level of withstand
voltage with the power cable. (Comply with the
local regulations on extensions.)
WARNING
• In case of extending the electric wire, please DO
NOT use a round-shaped pressing socket.
–– Incomplete wire
connections can
cause electric shock
or a fire.
Step 2.3 Installing and connecting the
drain hose
1 Install the drain hose.
CAUTION
• Make sure that the indoor unit is in upright
position when you pour water to check for leakage.
Make sure that the water does not overflow onto
the electrical part.
• If the diameter of the connection hose is smaller
than the product's drain hose, water leakage may
occur.
• Inadequate installation may cause water leakage.
• If the drain hose is routed inside the room,
insulate the hose so that dripping condensation
does not damage the furniture or floors.
• Do not box in or cover the drain hose connection.
Drain hose connection must be easily accessible
and serviceable.
Step 2.4 Optional: Extending the drain
hose
Drain hose
Assembly pipe
Connection hose
Drain hose (A)
Extension drain hose (B)
Wall
Indoor unit
Drain hose
Slant downwards
Water
Slant upwards
Dipped in water
(A)
5 cm
less
Bent
Too small
clearance
Drain hose
(B)
Extension drain hose
Ditch
Too small
clearance
20 mm or more
Foam insulation
Vinyl tape
English 33
Installation
2 Pour water into the drain pan. Check whether the
hose is well drained.
Step 2.5 Optional: Changing the
direction of the drain hose
Drain pan outlet
Rubber cap
Pour water in the direction of arrow.
<Front view>
Step 2.6 Installing and connecting
the assembly pipes to the refrigerant
pipes (assembly pipe)
Connect indoor and outdoor units with field-supplied
copper pipes by means of flare connections. Use
insulated seamless refrigeration grade pipe only,
(Cu DHP type according to ISO1337), degreased and
deoxidized, suitable for operating pressures of at
least 4200 kPa and for burst pressure of at least
20700 kPa. Under no circumstances must sanitary
type copper pipe be used.
There are 2 refrigerant pipes of different diameters:
• The smaller one is for the liquid refrigerant
• The larger one is for the gas refrigerant
A short liquid refrigerant pipe and a short gas
refrigerant pipe are already fitted to the air
conditioner. The connection procedure for the
refrigerant pipes varies according to the exit position
of each pipe when facing the wall:
Direction of the drained water
Left
<Side view>
Right
<Front view>
Underside
CAUTION
Installation
• Make sure that the indoor unit is in upright
position when you pour water to check for
leakage. Make sure that the water does not
overflow onto the electrical part.
34 English
Rear right or left
<Side view>
1 Cut out the appropriate knock-out piece (A, B, C)
on the rear of the indoor unit unless you connect
the pipe directly from the rear.
2 Smooth the cut edges.
3 Remove the protection caps of the pipes and
connect the assembly pipe to each pipe. Tighten
the nuts first with your hands, and then with a
torque wrench, applying the following torque:
Outer diameter (mm)
Torque (N•m)
Torque (kgf•cm)
ø 6.35
14 to 18
140 to 180
ø 9.52
34 to 42
350 to 430
ø 12.70
49 to 61
500 to 620
ø 15.88
68 to 82
690 to 830
NOTE
• If you want to shorten or extend the pipes,
see Step 2.7 Shortening or extending the
refrigerant pipes (assembly pipe) on page
35.
4 Cut off the remaining foam insulation.
5 If necessary, bend the pipe to fit along the bottom
of the indoor unit. Then pull it out through the
appropriate hole.
• The pipe should not project from the rear of the
indoor unit.
• The bending radius should be 100 mm or more.
6 Pass the pipe through the hole in the wall.
NOTE
• The pipe will be insulated and fixed permanently
into position after finishing the installation and
the gas leak test. For further details. see Step 4.1
Performing the gas leak tests on page 41.
Step 2.7 Shortening or extending the
refrigerant pipes (assembly pipe)
Pipe cutter
Pipe
90°
Oblique
Rough
D
Burr
90°±2°
A
45°±2°
L
R 0.4 to 0.8
Pipe
Flare
D
(Unit: mm)
Outer diameter (D)
Depth (A)
Flare dimension (L)
ø 6.35
1.3
8.7 to 9.1
ø 9.52
1.8
12.8 to 13.2
ø 12.70
2.0
16.2 to 16.6
ø 15.88
2.2
19.3 to 19.7
Flare nut
Indoor outlet pipe
Connecting pipe
Outer diameter (mm)
Torque (N•m)
ø 6.35
14 to 18
Torque (kgf•cm)
140 to 180
ø 9.52
34 to 42
350 to 430
ø 12.70
49 to 61
500 to 620
ø 15.88
68 to 82
690 to 830
English 35
Installation
CAUTION
• Tighten the flare nut with a torque wrench
according to specified method. If the flare nut is
over-tightened, the flare may break and cause
refrigerant gas leakage.
• Do not box in or cover the pipe connection.
All refrigerant pipe connection must be easily
accessible and serviceable.
Step 2.8 Fixing the installation plate
CAUTION
• If you need a pipe longer than specified in piping
codes and standards, you must add refrigerant to
the pipe. Otherwise, the indoor unit may freeze.
• While removing burrs, put the pipe face down to
make sure that the burrs do not get in to the pipe.
Liquid service port
<High pressure>
Gas service port
<Low pressure>
You can install the indoor unit on a wall, window
frame, or gypsum board.
WARNING
• Make sure that the wall, window frame, or
gypsum board can withstand the weight of the
indoor unit. If you install the indoor unit in a place
where it is not strong enough to withstand the
unit's weight, the unit could fall and cause injury.
When fixing the indoor unit on a wall
Fix the installation plate to the wall giving attention
to the weight of the indoor unit.
Plastic anchor
20 mm
Wall
(Unit : mm)
Correct
Model
A
B
C
D
✴✴18/24✴✴
38
126
70
38
Pipe bundle hole: Ø 65 mm
Inclined
Cracked
Uneven
thickness
Damaged
surface
<Flare nut>
Installation
NOTE
• Excessive torque may cause gas leakage. When
extending the pipe with welding or brazing,
ensure that nitrogen is used during the welding
or brazing process. The joint must be accessible
and serviceable.
CAUTION
• Tighten the flare nut at the specified torque. If the
flare nut is over-tightened, it may break to cause
leakage of refrigerant gas.
36 English
NOTE
• If you mount the plate to a concrete wall using
plastic anchors, make sure that gaps between the
wall and the plate, created by projected anchor, is
less than 20 mm.
When fixing the indoor unit on a window frame
1 Determine the positions of the wooden uprights to
be attached to the window frame.
2 Attach the wooden uprights to the window frame
giving attention to the weight of the indoor unit.
3 Attach the installation plate to the wooden
upright using tapping screws.
When fixing the indoor unit on a gypsum board
1 Use stud finder to find out locations of the studs.
2 Fix the plate hanger on two studs.
CAUTION
• If you fix the indoor unit on a gypsum board,
use only specified anchor bolts on reference
positions. Otherwise, the gypsum surrounding
the joints may crumble over time and cause the
screws to be loosened and stripped. This may
lead to physical injury or equipment damage.
• Search for other spots if there are less than two
studs, or the distance between the studs are
different from the plate hanger.
• Fix the installation plate without inclining to one
side.
Installation
English 37
Outdoor Unit Installation
Step 3.1 Fixing the outdoor unit in
place
X
NOTE
• Make sure that the wall can support the weights
of the rack and the outdoor unit.
• Install the rack close to the column as much as
possible.
Y
Step 3.2 Connecting the cables and
the refrigerant pipes
Rubber leg
(Unit : mm)
Model
X
Y
✴✴18✴✴
602
310
✴✴24✴✴
660
340
N(1)
1
1 Place the outdoor unit as directed on the top of
the unit to let the discharged air out properly.
2 Fix the outdoor unit in level to an appropriate
support using anchor bolts.
NOTE
• Secure the rubber legs to help prevent the
generation of noise and vibration.
• If the outdoor unit is exposed to strong winds,
install shield plates around the outdoor unit so
that the fan can operate correctly.
Optional: Fixing the outdoor unit to a wall with
a rack
Soft rubber designed to cut off vibration from
rack to wall (not supplied with product)
Installation
Soft rubber designed to cut off residual vibration from
outdoor unit to rack (not supplied with product)
38 English
CAUTION
• Be sure to fix the power cables and
communication cable with a cable clamp.
CAUTION
Control box
Remove the screw for the
control box cover
• When installing, make sure there is no leakage.
When recovering the refrigerant, ground the
compressor first before removing the connection
pipe. If the refrigerant pipe is not properly
connected and the compressor works with the
stop valve open, the pipe inhales the air and it
makes the pressure inside of the refrigerant cycle
abnormally high. It may cause explosion and
injury.
1 Leave the system in the standby mode.
WARNING
Remove the gas and liquid
service port caps
For connecting the
refrigerant pipes
Gas service port
<Low pressure>
Liquid service port
<High pressure>
Connect the gas and liquid
refrigerant pipes
• Do not turn on the system! This is necessary for
better vacuum operation (full OPEN position of
Electronic Expansion Valve).
2 Connect the charging hose of the low pressure
side of manifold gauge to a gas service port as
seen in the picture.
3
Valve
15 minutes
4
Vacuum
Pump
Step 3.3 Evacuating the air
Liquid service port <Low pressure>
5
Installation
The outdoor unit is loaded with sufficient R-410A
refrigerant. Do not vent R-410A into atmosphere: it
is a fluorinated greenhouse gas, covered by Kyoto
Protocol, with a Global Warming Potential (GWP) =
2088. You should evacuate the air in the indoor unit
and in the pipe. If air remains in the refrigerant pipes,
it affects the compressor. It may cause reduction
of cooling capacity and malfunction. Use a vacuum
pump.
(Backward flowing prevention)
Liquid service port <High pressure>
English 39
3 Open the valve of the low pressure side of
manifold gauge anticlockwise.
4 Evacuate the air in the connected pipes using the
vacuum pump for about 15 minutes.
• Make sure that pressure gauge shows -0.1
MPa (-76 cmHg, 5 torr) after about 10 minutes.
This procedure is very important to avoid a
gas leak.
• Close the valve of the low pressure side of
manifold gauge clockwise.
• Turn off the vacuum pump.
• Check for 2 minutes if there is any pressure
change.
• Remove the hose of the low pressure side of
manifold gauge.
5 Set a valve cork of liquid and gas service port to
the open position.
Step 3.4 Adding refrigerant
If you use a pipe longer than the length specified in
the piping codes and standards, you must add 20 g
of refrigerant R-410A for each extra meter. If you use
a pipe shorter than the length specified in the piping
codes and standards, the evacuating time is normal.
Refer to the Service Manual for further details.
CAUTION
• The remaining air in the Refrigeration cycle,
which contains moisture, may cause malfunction
on the compressor.
• Always contact the service centre or a
professional installation agency for product
installation.
Installation
R-410A is a mixed type of refrigerant. It is necessary
for recharging under conditions of liquid. When
recharging refrigerant from the refrigerant cylinder
to the equipment.
Before recharging, check whether the cylinder has
a siphon or not. There are two ways to recharge the
refrigerant:
40 English
Siphon
Charge the refrigerant
standing the cylinder upright.
Charge the refrigerant turning
the cylinder upside down.
<Cylinder with siphon>
<Cylinder without siphon>
NOTE
• If R-410A refrigerant is charged with gas, the
composition of the charged refrigerant changes
and the characteristics of the equipment vary.
• During the measuring operation of refrigerant
quantity added use electronic scales. If cylinder
doesn't have siphon, upset it.
Installation Inspection
Test parts for the
indoor unit
Step 4.1 Performing the gas leak tests
1 Before inspecting the leakage, use a torque
wrench to close the cap for the stop valve.
(Comply with a tightening torque for each size
of the diameter, and tighten the cap firmly to
prevent any leakage.)
Test parts for the
indoor unit
Tightening torque for body cap
(Refer to the table)
Charging core
Step 4.2 Running the Smart Install
mode
Spindle
R-22: Thread of the screw - 7/16-2OUNF
R-410A: Thread of the screw -1/2-2OUNF
Tightening torque for charging port cap (Refer to the table)
Tightening torque
Outer diameter
(mm)
Body cap (N•m) Charging port cap (N•m)
ø 6.35
20 to 25
ø 9.52
20 to 25
ø 12.70
25 to 30
ø 15.88
30 to 35
Over ø 19.05
35 to 40
1 Make sure that the air conditioner is in the
standby status.
2 Hold down the
(Power),
(Mode), and
(SET) buttons on the remote control
simultaneously for 4 seconds.
3 Wait until Smart Install mode succeeds or fails. It
takes approximately 7 to 13 minutes.
• While Smart Install mode is proceeding:
Type
Display
LED3
LED2
LED1
10 to 12
( 1 N•m = 10 kgf•cm )
2 Insert inert gas into the pipes connected to
indoor and outdoor units.
3 Test leakage on the connection parts of the
indoor and outdoor units with soap lather or
liquid.
Indoor
unit
indicator
The progress is
displayed as a
number between
0 and 99 on the
indoor unit display.
The LEDs on the
indoor unit display
blink in sequence,
then all of them blink
simultaneously. These
operations repeat.
• When Smart Install mode succeeds: Smart
Install mode ends with ringing sound, and the
air conditioner is in standby status.
• When Smart Install mode fails: An error
message is displayed on the indoor unit
display, and Smart Install mode ends.
NOTE
• Smart Install mode can be operated only with the
supplied remote control.
• During the Smart install mode procedure, remote
control cannot be operated.
English 41
Installation
Test parts for the
indoor unit
LED Display
When error occurs, take necessary measures by referring to the following table. For more information on
necessary measures for errors, refer to the service manual.
Error indicator
LED Display
Display
LED 1 LED 2
LED 3
Error
Measures for the installer to take
/
,
display
and all LEDs
blink.
Communication
error between
indoor and
outdoor units
• Check the connection wire
between the indoor and outdoor
units (whether the power cable or
communication cable is crossed or
not).
Error on indoor
temperature
sensor
• Check the connection of the
connector.
Error on indoor
heat exchanger
• Check the connection of the
connector.
Error on indoor fan
motor
• Check the connection of the
connector.
• Remove foreign substance. (Check
for the cause that restrains motor.)
EEPROM/Option
error
• Re-set options.
Refrigerant flow
blocking error
• Check if the stop valve is completely
open.
• Check if there is any blockage in the
refrigerant pipe which connects the
indoor and outdoor units.
• Check for refrigerant leak.
Lack of refrigerant
(for inverter
models only)
• Check if a sufficient amount of
refrigerant is additionally charged
for the pipe longer than specified in
piping codes and standards.
• Check for refrigerant leak between
valve and pipe connection.
,
Installation
❈This LED pattern
appears when an
error occurs on the
outdoor unit.
❈
: Off,
42 English
: Blinking,
: On
Step 4.3 Performing final check and
trial operation
1 Check the following:
• Strength of the installation site
• Tightness of pipe connection to detect gas leak
• Electric wiring connection
• Heat-resistant insulation of the pipe
• Drainage
• Grounding conductor connection
• Correct operation (Take the following steps.)
2 Press the
(Power) button on the remote control to
check the following:
• The indicator on the indoor unit lights up.
• The airflow blade opens and the fan gears up for
operation.
3 Press the
(Mode) button to select Cool mode. Then
take the following sub-steps:
• In Cool mode, use the Temperature button to set the
set temperature to 16 °C.
• Check whether, approximately 3 to 5 minutes later, the
outdoor unit starts, and a cool or warm air blows out.
• After 12 minutes of stationary condition, check the
indoor unit air treatment.
4 Press the
(Air swing) button to check whether the
airflow blades work properly.
5 Press the
(Power) button to stop the trial operation.
2 Turn on the air conditioner in cooling with fan operating
at high velocity. (Compressor will immediately start,
provided 5 minutes have elapsed since the last stop.)
3 After 1 minutes of operation, shut the suction valve with
the same wrench.
4 Turn off the air conditioner and switch mains supply off.
5 Disconnect tubing. After disconnection, protect valves
and tubing ends from dust.
CAUTION
• Compressor damage may occur if the compressor is run at
a negative suction pressure.
Pumping down for removing the product
1 Turn on th air conditioner and select Fast Cool mode.
2 Let the compressor run for more than 5 minutes. If the
compressor does not operate for more than 5 minutes
due to protection control, wait about 2 minutes, and then
carry out the next procedure.
3 Release the valve caps on High and Low pressure side.
4 Use L-wrench to close the valve on the high pressure side.
5 After approximately 1 minute, close the valve on the low
pressure side.
6 Stop operation of the air conditioner by pressing the
(Power) button on the indoor unit or remote control.
7 Disconnect the pipes.
Pumping down refrigerant
Pump-down is an operation intended to collect all the
system refrigerant in the outdoor unit. This operation must
be carried out before disconnecting the refrigerant tubing
in order to avoid refrigerant loss to the atmosphere.
1
1 minute
WARNING
–– Do not operate the compressor while a valve is
open due to refrigerant leakage from a pipe or an
unconnected or incorrectly connected pipe. Failure
to do so may cause air to flow into the compressor
and too a high pressure to develop inside the
refrigerant circuit, leading to an explosion or
product malfunction.
1 Shut off the liquid valve with the Allen wrench.
Liquid service port
<High pressure>
Gas service port
<Low pressure>
Installation
• After installing the product, be sure to perform leak
tests on the piping connections. After pumping down
refrigerant to inspect or relocate the outdoor unit,
be sure to stop the compressor and then remove the
connected pipes.
2
Off
English 43
44 English
English 45
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