Samsung | AR09NXPXBWKNSH | User manual | Samsung WindFreeᵀᴹ 掛牆式冷氣機 AR09NXPXBWKNSH User manual

Samsung WindFreeᵀᴹ 掛牆式冷氣機 AR09NXPXBWKNSH User manual
Installation manual
Outdoor unit
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
Sea breeze
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.)
• Because your air conditioner contains R-32 refrigerant, make
sure that it is installed, operated, and stored it in a room whose
floor area is larger than the minimum required floor area
specified in the following table:
• For the product that uses the R-32 refrigerant, Install the indoor
unit on the wall 1.8 m or higher from the floor (Please refer to
Table 1)
(Unit : mm)
m (kg)
A (m2)
No requirement
≤ 1.842
• m : Total refrigerant charge in the system
m: 系統內 總雪種量
• A : Minimum required floor area
A: 所需最小面積
• IMPORTANT: it’s mandatory to consider either the table above or
taking into consideration the local law regarding the minimum
living space of the premises.
安裝時必須考慮表1 或當地有關法律
• 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
• 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
(Unit: mm)
Step 1.1 Choosing the installation location
Minimum clearance in mm
Overview of installation location requirements
100 mm or more
125 mm
or more
• 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.
125 mm
or more
Top view
Side view
When installing 1 outdoor unit
Drain hose hole
You can select the direction of
draining (left or right).
(6 cases)
(Unit: mm)
Maximum pipe height
Make at least one round to
reduce noise and vibration.
The actual units may look different from
the images depicted here.
(Unit : m)
Pipe length
Minimum Maximum
Outer wall
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
• 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.
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
• 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
Indoor Unit Installation
Insulated assembly pipe,
Ø 6.35 mm (1)
Insulated assembly pipe,
Ø 9.52 mm (1)
Drain Hose, 2 m long (1)
Pipe clamp B (3)
Pipe clamp A (3)
PE T3 foam tube insulation (1)
Putty 100 g (1)
M4 x 25 tapped screw (6)
Cement nail (6)
Drain plug (1)
3-wire power cable (1)
Step 1.3 Checking and preparing
accessories and tools
Installation plate (1)
Remote control (1)
Users Manual (1)
Control box
Flat-head screwdriver
2 Unlock the side hooks ( , ), then centre hooks ( ). Then
unlock the bottom hooks ( ) to pull out the cover panel.
Drain hose
Indoor unit
<The hole slants downwards>
(Front view) (Side view)
<Circular terminal>
Bottom/Side hook (B/C)
F1 F2
• 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: 60245 IEC66/CENELEC: H07RN-F, IEC: 60245
• Power & Communication cable shall not exceed 30m.
• 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
• If you need to extend the pipe, be sure to extend the cable, too.
Refrigerant pipes
Drain hose
Cable (Maximum)
Fasten the screws for the wire holders.
<Possible directions of the pipe bundle>
• 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.
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
• For information about the power cable specifications for
indoor and outdoor units, refer to the installation manual.
• After peeling off cable wires from the pre-installed tube.
Insert a contraction tube.
Power cable (Outdoor unit)
3G X 2.5 mm², H07RN-F
Outdoor-to-Indoor power cable
3G X 1.0 mm², H07RN-F
Communication cable
2 X 0.75 mm², H05RN-F
Type GL
20 A
• 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).
6 Apply heat to the contraction tube to contract it.
Contraction tube
7 After tube contraction work is completed, wrap it with the
insulation tape to finish.
Insulation tape
Power cable
(Unit: mm)
Pre-installed tube for the power cable
(Unit: mm)
• 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.
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
• Method 2: Twist the wire cores together and push it into
the sleeve.
• For the product that uses the R-32 refrigerant, be cautious not to
generate a spark by keeping the following requirements:
對於使用R-32 製冷劑的產品,請謹慎保持以下要求不產生
–– 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.
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.
Method 1
Method 2
Connection sleeve
• Make sure that the connection parts are not exposed to
• 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.)
• 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 2.5 Installing and connecting the
drain hose
Connection sleeve
1 Install the drain hose.
Drain hose
• Connect the wires firmly so that wires cannot be pulled out easily.
(If they are loose, it could cause burn-out of the wires.)
Power and communication cables
(assembly cable)
2-wire assembly cable (1)
Remote control battery (2)
Vinyl tape
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.
Installation Manual (1)
Refrigerant pipes
(assembly pipe)
• Electroscope
Bottom right
Pipe bender
Spirit level
Measuring tape
Rear right or left
• Make sure that the hole slants downwards so that the drain
hose slants downwards to drain water well.
Installation plate
Accessories in the indoor unit package
(Unit : m)
1 Wind the refrigerant pipes, power cable, communication
cable and drain hose with vinyl tape to make a pipe bundle.
• Vacuum pump
(Backward flowing
• Manifold gauge
• Stud finder
• Torque wrench
• Pipe cutter
• Reamer
Step 1.4 Drilling a hole through the wall
1 Remove the package.
2 Remove the top cushion.
3 Pull out the unit from the bottom cushion.
Centre hook (A)
General tools
• 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.
Step 2.3 Connecting the power and
communication cables (assembly cable)
Vinyl tape (2)
Rubber leg (4)
Step 2.2 Disassembling the installation plate
2 Drill the hole.
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.
• 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 for test operation
• Thermometer
• Resistance meter
1 Open the indoor unit package.
2 Remove the left and right cushions.
3 Pull out the unit from the package.
Remote control holder (1)
1 Remove the cap screws, then the screws.
• When removing refrigerant from the system for servicing or
decommissioning, it is recommended to remove the entire
• When transferring refrigerant into cylinders, make sure that
only the refrigerant recovery cylinders are used.
• All cylinders used for the recovered refrigerant shall be
• 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
3-wire assembly cable (1)
Step 2.1 Disassembling the cover panel
Step 1.5 Taping the pipes, cables, and
drain hose
M4 x 12 tapping screw (2)
Cap screw (2)
Accessories in the outdoor unit package
Phillips screwdriver
Leakage detection methods
• The leakage detector shall be calibrated in a refrigerant-free
• Make sure that the detector is not a potential source of ignition.
• The leakage detector shall be set to the LFL (lower flammability
• 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 shutoff 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.
• Comply with the length and height limits described in the
figure above.
Cap screw
• 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.
Pipe bundle hole: Ø 65 mm
• Be sure to drill only one hole.
Area ventilation
Cut insulation to have
rainwater drained
(5 cases)
(Unit: mm)
Standard for
factory charge
When installing more than 1 outdoor unit
• Make sure that the seals or sealing materials have not
• 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.
Unpacking the indoor unit
Pipe height
Step 1.2 Unpacking
used while in detection of leakage.
Preparation of fire extinguisher
Unpacking the outdoor unit
pipe length
• 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
• 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
• 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.
Optional accessories
Air flow direction
• To purge air in the refrigerant, be sure to use a vacuum pump.
• Note that the refrigerant has no odour.
Please scan this QR code for detail
video of indoor unit installation.
<Minimum distances between the hole and the
installation plate>
Wall-mounted type
Minimum clearances for the outdoor unit
Pipe bundle hole
Table 1 表 1 (defined according to IEC 60335-2-40:2018)
Installation of the outdoor unit
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
• 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 2.4 Optional: Extending the power cable" in the
installation manual.
Sea breeze
• The recovery system shall operate normally according to the
specified instructions and shall be suitable for refrigerant
• 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
• 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
• 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.
Sea breeze
General information
• 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
• 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
• All the materials used for the manufacture and packaging of
the air conditioner are recyclable.
Installation of the product
• 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
• 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 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.
• The outdoor unit shall be installed in an open space that is
always ventilated.
• The local gas regulations shall be observed.
• To dispose the refrigerant, should have a registered chemical
waste collector to handle.
• 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.
對於使用R-32 製冷劑的產品,將室內機安裝在離 地面1.8 米或
更高的牆上 (請參考表1)
• 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.
Carefully follow the precautions listed below because they are
essential to guarantee the safety of both the air conditioner and the
• 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.
• 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.
Safety Information on
–– 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
–– 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
• Do not install the indoor unit if it has any drainage problem.
• 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.
• After compressing it, pull both sides of the wire to make
sure it is firmly pressed.
Method 1
Step 2.4 Optional: Extending the power cable
Crimping pliers
sleeve (mm)
20xØ6.5 (HxOD)
Compress it 4 times.
Compress it 4 times.
Width 19 mm
tube (mm)
70xØ8.0 (LxOD)
Indoor unit
Drain hose
5 mm
Slant upwards
Dipped in water
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.
Method 1
Insulation tape
Insulation tape
Slant downwards
Connection hose
Method 2
1 Prepare the following tools.
Assembly pipe
40 mm
5 cm
Method 2
Insulation tape
35 mm
Too small
Too small
Step 2.9 Shortening or extending the
refrigerant pipes (assembly pipe)
Drain pan outlet
Rubber cap
Pipe cutter
<Front view>
Pour water in the direction of arrow.
• 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
<Front view>
Direction of the drained water
Outer diameter (mm)
Extension drain hose (B)
• 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.
Step 2.8 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.
Extension drain hose
Drain hose
20 mm or more
• The smaller one is for the liquid refrigerant
• The larger one is for the gas refrigerant
Vinyl tape
Torque (N•m)
ø 6.35
14 to 18
Outdoor Unit Installation
Step 3.1 Fixing the outdoor unit in place
Depth (A)
Flare dimension (L)
ø 6.35
8.7 to 9.1
ø 15.88
68 to 82
690 to 830
1 Lock the side hooks (D), then centre hooks (B). Then lock the
bottom hooks (C) to engage the cover panel in place.
), then assemble the cap screws (A-
2 Fasten the screw (A-
(Unit : mm)
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.
Outdoor-to-indoor power cable
(three wires)
Power cable
(three wires)
19.3 to 19.7
Communication cable
(two wires)
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
• Keep the piping length at a minimum to minimize the
additional refrigerant charge due to piping extension.
(Maximum allowable piping length: 15 m)
• 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.
• 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.
• 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.
15 minutes
Control box
Liquid service port <Low pressure>
Remove the screw for the
control box cover
Liquid service port <High pressure>
For connecting the
refrigerant pipes
Gas service port
<Low pressure>
Soft rubber designed to cut off residual vibration from
outdoor unit to rack (not supplied with product)
Liquid service port
<High pressure>
Connect the gas and
liquid refrigerant pipes
• 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.
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
Step 3.3 Evacuating the air
The outdoor unit is loaded with sufficient R-32 refrigerant. Do
not vent R-32 into atmosphere: it is a fluorinated greenhouse
gas, covered by Kyoto Protocol, with a Global Warming
Potential (GWP) = 675. 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.
Step 4.3 Performing final check and
trial operation
1 Check the following:
LED Display
Measures for the installer to take
• Strength of the installation site
• Tightness of pipe connection to detect gas leak
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).
• Electric wiring connection
• Heat-resistant insulation of the pipe
• Drainage
• Grounding conductor connection
• Correct operation (Take the following steps.)
Error on indoor temperature
• Check the connection of the
Error on indoor heat exchanger
• Check the connection of the
Error on indoor fan motor
• Check the connection of the
• Remove foreign substance.
(Check for the cause that
restrains motor.)
display and all
LEDs blink.
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)
❈This LED pattern appears when
an error occurs on the outdoor
: Blinking,
: On
• 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
(Power) button on the remote control to
2 Press the
check the following:
• The indicator on the indoor unit lights up.
• The airflow blade opens and the fan gears up for
(Mode) button to select Cool or Heat modes.
3 Press the
Then take the following sub-steps:
• In Cool mode, use the Temperature button to set the set
temperature to 16 °C.
3 Open the valve of the low pressure side of manifold gauge
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
• 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
5 Set a valve cork of liquid and gas service port to the open
Step 3.4 Adding refrigerant
If you use a pipe longer than 5 m, you must add 15g of refrigerant
R-32 for each extra meter. If you use a pipe shorter than 5 m,
the evacuating time is normal. Refer to the Service Manual for
further details.
• 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.
• Tighten the flare nut at the specified torque. If the flare nut is
over-tightened, it may break to cause leakage of refrigerant
Step 2.10 Fixing the installation plate
1 Hold down the
(Power) button on the indoor unit
for 5 seconds. Beep sounds immediately to indicate
that the product is ready for pump down procedure.
2 Let the compressor run for more than 5 minutes.
3 Release the valve caps on High and Low pressure side.
4 Use L-wrench to close the valve on the high pressure
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
7 Disconnect the pipes.
• 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.
(Air swing) button to check whether the
4 Press the
airflow blades work properly.
• 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
• 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.
5 Press the
(Power) button to stop the trial operation.
• Compressor damage may occur if the compressor is run at
a negative suction pressure.
1 minute
1 Use stud finder to find out locations of the studs.
2 Fix the plate hanger on two studs.
• 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
• Fix the installation plate without inclining to one side.
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.
Test parts for the
Test parts for the
indoor unit
indoor unit
Test parts for the
Test parts for the
indoor unit
indoor unit
Step 4.2 Running the Smart Install mode
(Mode), and
(SET /
2 Hold down the
Temperature type (℃↔℉)) 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:
LED Display
R-22: Thread of the screw - 7/16-2OUNF
R-410A/R-32 : Thread of the screw -1/2-2OUNF
Tightening torque for charging port cap (Refer to the table)
Tightening torque
Outer diameter (mm)
Charging port cap
Body 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
10 to 12
Maintenance Procedures
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.
• Smart Install mode can be operated only with the supplied
remote control.
• During the Smart install mode procedure, remote control
cannot be operated.
3 Before starting the process, make sure that:
• Any mechanical equipment is available for handling
refrigerant cylinders.
Performing the gas leak tests for repair
• All PPE (personal protective equipment) is available for
In case of repair of the refrigerant circuit, the following
procedure must be kept to consider flammability.
• The recovery process shall be supervised by a competent
1 Remove the refrigerant.
• The recovery equipment and cylinders comply with the
2 Purge the refrigerant circuit with inert gas.
3 Perform evacuation.
4 Purge the circuit again with inert gas.
5 Open the circuit.
9 Repeat the previous steps several times until no
refrigerant is within the system.
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
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.
• 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
• 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.
–– 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.
Charging core
• For the final nitrogen blowing charge, the system shall
be ventilated down to atmospheric pressure.
Gas service port
<Low pressure>
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.
• 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.
Tightening torque for body cap (Refer to the table)
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.
• 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.
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.)
• Compressed air or oxygen shall not be used.
Pumping down for removing the product
1 Make sure that the air conditioner is in the standby status.
Installation Inspection
8 Flush the system with nitrogen blowing for safety.
Liquid service port
<High pressure>
In addition to the conventional charging procedure, the
following requirements shall be kept.
6 Perform repair work.
• After 12 minutes of stationary condition, check the
indoor unit air treatment.
Precautions on adding the R-32 refrigerant
7 Charge the system with refrigerant.
• Check whether, approximately 3 to 5 minutes later, the
outdoor unit starts, and a cool air blows out.
You can install the indoor unit on a wall, window frame, or
gypsum board.
( 1 N•m = 10 kgf•cm )
• In Heat mode, use the Temperature button to set the set
temperature to 30 °C.
When fixing the indoor unit on a gypsum board
Step 4.1 Performing the gas leak tests
Remove the gas and liquid
service port caps
(Backward flowing prevention)
Soft rubber designed to cut off vibration from
rack to wall (not supplied with product)
<Flare nut>
Outer diameter (mm)
When fixing the indoor unit on a window frame
Connecting pipe
• 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.
: Off,
16.2 to 16.6
ø 15.88
Optional: Fixing the outdoor unit to a wall with a rack
12.8 to 13.2
• Be sure to fix the power cables and communication cable with
a cable clamp.
• 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
Rubber leg
Pipe bundle hole: Ø 65 mm
Flare nut
ø 9.52
ø 12.70
Indoor outlet pipe
Gas service port
<Low pressure>
(Unit: mm)
Outer diameter (D)
Step 2.12 Assembling the cover panel
350 to 430
If you want to shorten or extend the pipes, see Step 2.9
Shortening or extending the refrigerant pipes (assembly pipe).
Cut off the remaining foam insulation.
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.
Pass the pipe through the hole in the wall.
(Unit : mm)
Liquid service port
<High pressure>
R 0.4 to 0.8
500 to 620
Plastic anchor
49 to 61
Step 3.2 Connecting the power and
communication cables and the refrigerant
When fixing the indoor unit on a wall
Fix the installation plate to the wall giving attention to the
weight of the indoor unit.
34 to 42
• 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.
• 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
20 mm
ø 9.52
• Make sure that the pipe bundle does not move when you
install the indoor unit onto the installation plate.
ø 12.70
140 to 180
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:
Step 2.11 Fixing the indoor unit to the
installation plate
Torque (kgf•cm)
• 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.
There are 2 refrigerant pipes of different diameters:
Foam insulation
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
<Side view>
Step 2.6 Optional: Extending the drain
Drain hose (A)
Rear right or left
<Side view>
• Be sure to perform works such as additional refrigerant
charging and pipe welding under the conditions of good
• 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.
• 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.
Step 2.7 Optional: Changing the direction
of the drain hose
2 Pour water into the drain pan. Check whether the hose is well
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.
• Before starting the process, power supply must be
1 Be familiar with the equipment details.
2 Isolate the system electrically.
This appliance is filled with R-32.
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