Toshiba RAS-24TKVG-UA User manual
INSTALLATION MANUAL
AIR CONDITIONER (SPLIT TYPE)
ІНСТРУКЦІЯ ЗΙ ΒСТАНОВЛЕННЯ
КОНДИЦІОНЕРА ПОВІТРЯ
R32
Indoor unit
RAS-24TKVG-UA
Outdoor unit
RAS-24TAVG-UA
Внутрішній блок
RAS-24TKVG-UA
Зовнішній блок
RAS-24TAVG-UA
1120650172
ENGLISH
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UA
ЗМΙСТ
EN
CONTENTS
PRECAUTIONS FOR SAFETY ................................................... 1
ACCESSORY PARTS ................................................................. 5
INSTALLATION DIAGRAM OF INDOOR AND
OUTDOOR UNITS ...................................................................... 6
Optional Installation Parts....................................................... 6
INDOOR UNITS .......................................................................... 7
Installation Place .................................................................... 7
Cutting a Hole and Mounting Installation Plate ...................... 7
Piping and Drain Hose Installation ........................................ 7
Indoor Unit Fixing .................................................................. 8
Drainage ................................................................................ 9
OUTDOOR UNITS ...................................................................... 9
Installation Place ................................................................... 9
Precautions about Installation in Regions with Snowfall
and Cold Temperatures ........................................................ 9
Draining the Water ............................................................... 10
Refrigerant Piping Connection ............................................. 10
Evacuating ........................................................................... 11
ELECTRICAL WORKS ............................................................. 12
Wiring Connection ............................................................... 12
Power Supply and Connecting Cable Connection .............. 13
Power Supply Input Wiring Diagram ................................... 14
OTHERS .................................................................................... 15
Gas Leak Test ...................................................................... 15
Test Operation ..................................................................... 15
Auto Restart Setting ............................................................ 15
APPENDIX ................................................................................ 16
ТЕХНІКА БЕЗПЕКИ ................................................................... 1
ЧАСТИНИ У КОМПЛЕКТІ .......................................................... 5
СХЕМА ВСТАНОВЛЕННЯ ВНУТРІШНЬОГО І
ЗОВНІШНЬОГО БЛОКІВ .......................................................... 6
ВНУТРІШНІЙ БЛОК ................................................................... 7
ЗОВННШННЙ БЛОК ................................................................. 9
............................................................................. 10
ЕЛЕКТРИЧНА СИСТЕМА ....................................................... 12
ІНШЕ ......................................................................................... 15
ДОДАТОК ................................................................................. 16
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1
CAUTION
PRECAUTIONS FOR SAFETYPRECAUTIONS FOR SAFETY
Read the precautions in
this manual carefully before
operating the unit.
The symbols and their meanings are shown below.
WARNING : It indicates that incorrect use of this unit may cause severe injury or
death.
CAUTION : It indicates that incorrect use of this unit may cause personal injury
which does not require admission or repeated hospital treatment.
resources.
For general public use
Power supply cord and connecting cable of appliance use shall be at least
60245 IEC66. (Shall be installed in accordance with national wiring regulations.)
This appliance must be connected to the main power supply by means of a circuit
breaker or a switch with a contact separation of at least 3 mm in all poles.
To disconnect the appliance from the main power supply
EN
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WARNING
DANGER
WORK. MAKE SURE ALL POWER SWITCHES ARE OFF.
FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
GAS VAPORS.
FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR
EXPLOSION.
• TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE
• WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER
REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE
THE PIPE AND INJURIES ON PERSONS.
• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE
• Never modify this unit by removing any of the safety guards or bypassing any of
the safety interlock switches.
• Do not install in a place which cannot bear the weight of the unit.
Personal injury and property damage can result if the unit falls.
cord.
• Appliance shall be installed in accordance with national wiring regulations.
immediately.
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• Do not use any refrigerant different from the one specified for complement or
replacement.
your body.
those recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition
electric heater).
• Do not pierce or burn as the appliance is pressurized. Do not expose the
explode and cause injury or death.
explosion and injury.
• Thickness of copper pipes used R32 must be more than 0.8 mm. Never use
copper pipes thinner than 0.8 mm.
refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.
• Comply with national gas regulations.
CAUTION
• Exposure of unit to water or other moisture before installation could result in
electric shock.
Do not store it in a wet basement or expose to rain or water.
• Do not install the unit at place where leakage of flammable gas may occur.
• Do not install in a place that can increase the vibration of the unit. Do not
install in a place that can amplify the noise level of the unit or where noise and
discharged air might disturb neighbors.
• Please read this installation manual carefully before installing the unit. It contains
further important instructions for proper installation.
• The manufacturer shall not assume any liability for the damage caused by not
observing the description of this manual.
EN
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Please make absolutely sure that the installation of this appliance is reported to
the local power supplier before installation. If you experience any problems or if the
countermeasures.
■Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases.
Do not vent gases into the atmosphere.
Refrigerant type: R32
GWP(1) value: 675 * (ex.R32 ref.AR4)
(1)GWP = global warming potential
The refrigerant quantity is indicated on the unit name plate.
* This value is based on F gas regulation 517/2014
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5
ACCESSORY PARTSACCESSORY PARTS
Indoor Unit
No. Part name No. Part name
1
Installation plate × 1
2
Wireless remote control × 1
3
4
Remote control holder × 1
5
Mounting screw × 6
6
Flat head wood screw × 2
7
Owner’s Manual × 1
8
Installation Manual × 1
9
Screw × 2
Outdoor Unit
No. Part name No. Part name
0
Drain nipple × 1
!
Cap water proof × 2
Air lters
Clean every 2 weeks.
1. Open the air inlet grille.
3. Vacuum or wash and then dry them.
EN
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The auxiliary piping can be connected to
right or bottom left.
INSTALLATION DIAGRAM OF INDOOR AND OUTDOOR UNITSINSTALLATION DIAGRAM OF INDOOR AND OUTDOOR UNITS
Hook
Hook
Installation
plate
1
50 mm or more
170 mm or more
300 mm or more
Shield pipe
(Attach to the front panel.)
Refrigerant piping
must be protected
from physical
damage.
Install a plastic
cover or equivalent.
Flat head
wood screw
Wireless remote control
Remote control holder
6
3
4
2
Vinyl tape
Apply after carrying
out a drainage test.
Saddle
Extension drain hose
by installer)
600 mm or more
100 mm or more
100 mm or more
600 mm or more
600 mm or more
Cut out a piece of SPACER from indoor
between the indoor unit and wall to tilt
the indoor unit for better operation.
Wall
Right
Rear
right
Rear
left
Left
right
Do not allow the drain hose to get slack.
Make sure to run the drain hose sloped
downward.
Cut the piping
hole sloped
slightly.
Insulate the refrigerant pipes separately
8 mm thick heat resisting
polyethylene foam
Fixing bolt arrangement of outdoor unit
exposed to a strong wind.
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.
0and cap
water proof !to the bottom plate of the outdoor unit before installing it.
108 mm
600 mm
320 mm
340 mm
28 mm
Ø25 mm
125 mm
Air inlet
Air outlet
Drain outlet
102 mm
86 mm
90 mm
Optional Installation Parts
Part
code Parts name Q’ty
A
Refrigerant piping
Liquid side : Ø6.35 mm
Gas side : Ø12.70 mm
One
each
BPipe insulating material
1
C One
each
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INDOOR UNITINDOOR UNIT
Installation Place
• A place which provides the spaces around the indoor unit as shown in the
diagram
• A place where there are no obstacles near the air inlet and outlet
• A place which allows easy installation of the piping to the outdoor unit
• A place which allows the front panel to be opened
avoided to put anything on the top of the indoor unit.
CAUTION
• Direct sunlight to the indoor unit’s wireless receiver should be avoided.
• The microprocessor in the indoor unit should not be too close to RF
noise sources.
Remote control
• A place where there are no obstacles such as a curtain that may block the
signal from the indoor unit
• Do not install the remote control in a place exposed to direct sunlight or
close to a heating source such as a stove.
• Keep the remote control at least 1 m apart from the nearest TV set or
stereo equipment. (This is necessary to prevent image disturbances or
noise interference.)
• The location of the remote control should be determined as shown below.
(Side view)
Reception
range
Remote
control Remote
control
(Top view)
Reception range
Indoor unit
Indoor unit
Cutting a Hole and Mounting
Installation Plate
Cutting a hole
When installing the refrigerant pipes from the rear
Pipe hole
Ø65 mm
23 mm
1. After determining the pipe hole position on the mounting plate (
the pipe hole (Ø65 mm) at a slight downward slant to the outdoor side.
NOTE
sure to use a pipe hole brim ring sold separately.
The center of the pipe hole
is above the arrow.
Mounting the installation plate
Anchor bolt holes
Hook
Hook
Pipe hole
Indoor unit
Thread Mounting
screw
Weight
Pipe hole
Installation plate
1
5
Hook
When the installation plate is directly mounted
on the wall
and lower parts to hook up the indoor unit.
3. Install the installation plate horizontally in the wall.
CAUTION
personal injury and property damage.
Anchor bolt
5 mm dia. hole
Projection
15 mm or less
Clip anchor
(local parts)
Mounting screw
Ø4 mm x 25
Installation plate
(Keep horizontal direction.)
5
CAUTION
damage if the unit falls.
holes in the wall.
• Insert clip anchors for appropriate mounting screws 5.
• Secure four corners and lower parts of the installation plate with 4 to 6
mounting screws to install it.
NOTE
Piping and Drain Hose Installation
Piping and drain hose forming
connecting pipes. (Use polyethylene foam as insulating material.)
1. Die-cutting front panel slit
Cut out the slit on the left or right side of the front panel for the left or right
connection and the slit on the bottom left or right side of the front panel
for the bottom left or right connection with a pair of nippers.
2. Changing drain hose
cap.
Rear right
Rear left
Left
Right
front panel slit
Changing
drain hose
Riping preparation
EN
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Drain hose
How to remove the drain hose
• The drain hose can be removed by removing the
screw securing the drain hose and then pulling out
the drain hose.
sharp edges of steel plate. The edges can injuries.
How to remove the drain cap
pliers and pull out.
How to x the drain cap
1) Insert hexagon wrench (4 mm)
in a center head.
No gap Insert a hexagon wrench
(4 mm).
Do not apply lubricating oil
(refrigerant machine oil)
when inserting the drain
cap. Application causes
deterioration and drain
leakage of the plug.
2) Firmly insert the drain cap.
CAUTION
Information
due to the condition of piping and you
9screws provided
Slit
Slit
In case of right or left piping
In case of bottom right or bottom left piping
• After scribing slits of the front panel
them with a pair of nippers or an
equivalent tool.
• After scribing slits of the front panel
them with a pair of nippers or an
equivalent tool.
Left-hand connection with piping
surface. If the connecting pipe is laid exceeding 43 mm above the wall
as not to crush the pipe.
Bend the connecting pipe within a radius of 30 mm.
Gas side
Liquid side
520 mm
43 mm
420 mm
Outward form of indoor unit
R 30 mm (Use polisin (polyethylene)
core or the like for bending pipe.)
connecting pipes to the auxiliary pipes and wrap the facing tape around
them.
NOTE
CAUTION
auxiliary pipes (two) only with facing tape.
• Carefully arrange pipes so that any pipe does not stick out of the rear
plate of the indoor unit.
• Carefully connect the auxiliary pipes and connecting pipes to one
connecting pipes. (Use polyethylene foam as insulating material.)
Indoor unit
Connecting cable
Auxiliary pipes
Installation plate
Indoor Unit Fixing
1. Pass the pipe through the hole in the wall and hook the indoor unit on the
installation plate at the upper hook.
on the installation plate.
hooked up on the installation plate.
Hook here.
Hook Press
(unhook)
Installation plate
1
• For detaching the indoor unit
pull the indoor unit toward
you while pushing its bottom
Push Push
9Screw 9Screw
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NOTE
Drainage
1. Run the drain hose sloped downwards.
• The hole should be made at a slight downward slant on the outdoor side.
Do not rise the
drain hose.
50 mm
or more
Do not form the
drain hose into
a wavy shape.
Do not put the
drain hose end
into water.
Do not put the
drain hose end
in the drainage ditch.
2. Put water in the drain pan and make sure that the water is drained out of
doors.
extension drain hose with shield pipe.
Shield pipe
Drain hose Inside the room Extension drain hose
This air conditioner has the structure designed
parts at a height above the drain guide.
Space for pipes
Drain
guide
Wall
CAUTION
Arrange the drain pipe for proper drainage from the unit.
OUTDOOR UNITOUTDOOR UNIT
• A place which provides the spaces around the outdoor unit as shown in
the diagram
• A place which can bear the weight of the outdoor unit and does not allow
an increase in noise level and vibration
• A place where the operation noise and discharged air do not disturb your
neighbors
• A place which is not exposed to a strong wind
• A place free of a leakage of combustible gases
• A place which does not block a passage
secure its feet.
• The allowable length of the connecting pipe.
• The allowable height of outdoor unit installation site.
• A place where the drain water does not raise any problems
• Do not use the supplied drain nipple for draining water. Drain the water
from all the drain holes directly.
Installation Place
Model RAS-24TAVG-UA
Chargeless Up to 15 m
Maximum length 20 m
Additional refrigerant
charging
(20 g / 1 m)
Model RAS-24TAVG-UA
Maximum height 12 m
CAUTION
When the outdoor unit is installed in a place where the drain water might
adhesive or caulking compound.
Precautions about Installation in Regions
with Snowfall and Cold Temperatures
Snow protection plate
Snow protection hood
Snow accumulation line
Holding frame
Front
Anchor
bolts
At least
50 cm
Install at least 50 cm
above the snow
accumulation line.
Precautions for adding refrigerant
• Use a scale having a precision with at least 10 g per index line when
adding the refrigerant.
Do not use a bathroom scale or similar instrument.
gradually.
CAUTION
1. Install the outdoor unit without anything blocking the air discharging.
2. When the outdoor unit is installed in a place always exposed to strong
fan operation using a duct or a windshield.
of wind.
4. Installation in the following places may result in trouble.
Do not install the unit in such places.
• A place full of machine oil
waves are likely to be generated
and medical equipment
Strong
wind
EN
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Draining the Water
• Holes are provided on the base plate of the outdoor unit to ensure that
If a centralized drain is required when installing the unit on a balcony or
the 2 elongated holes on the base plate of the outdoor unit. [How to
drain holes by pushing them into place from the underside of the
base plate.
2) Press down on the outer circumferences of the caps to ensure that
they have been inserted tightly.
if their outer circumferences lift up or the caps catch on or wedge
against something.)
(supplied with the outdoor unit)
Drain nipple
Drain nipple
Commercially available
drain hose
2. Install the drain nipple and a commercially available drain hose (with
installation diagram of the indoor and outdoor units.)
a downward sloped angle while ensuring that it is connected tautly.
from draining.
Refrigerant Piping Connection
Flaring
1. Cut the pipe with a pipe cutter.
• Projection margin in aring : A (Unit : mm)
RIDGID (clutch type)
90° Obliquity Roughness Warp
Outer dia.
of copper pipe R32 tool used Convertional tool
used
Ø6.35 0 to 0.5 1.0 to 1.5
Ø9.52 0 to 0.5 1.0 to 1.5
Ø12.70 0 to 0.5 1.0 to 1.5
Pipes thickness 0.8 mm or more
Outer dia. of copper pipe R32
Ø6.35 1.5 to 2.0
Ø9.52 1.5 to 2.0
Ø12.70 2.0 to 2.5
Pipes thickness 0.8 mm or more
Die Pipe
IMPERIAL (wing nut type)
CAUTION
• Flare processing under the condition of scratches on the inner surface
CAUTION
the conditions.
Tightening connection
Externally
threaded side
Use a wrench to secure. Use a torque wrench to tighten.
Internally
threaded side
Half union Flare nut
Outer dia. of copper pipe Tightening torque
Ø6.35 mm 16 to 18 (1.6 to 1.8 kgf·m)
Ø9.52 mm 30 to 42 (3.0 to 4.2 kgf·m)
Ø12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
(Unit : N·m)
• Tightening torque of are pipe connections
The operating pressure of R32 is
higher than that of R22 (approx.
1.6 times). It is therefore necessary
connecting sections (which connect
the indoor and outdoor units) up to the
connections may cause not only a
refrigeration cycle.
Flare at
indoor unit side
Flare at
outdoor unit side
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Evacuating
air purge together at once.
AIR PURGE
Evacuate the air in the connecting pipes and in the indoor unit using a
see the manual of the vacuum pump.
Using a vacuum pump
when the pump stops.
refrigeration cycle trouble may result.)
1. Connect the charge hose from the manifold valve to the service port of the
packed valve at gas side.
2. Connect the charge hose to the port of the vacuum pump.
3. Open fully the low pressure side handle of the gauge manifold valve.
4. Operate the vacuum pump to start evacuating. Perform evacuating for
about 15 minutes if the piping length is 20 meters. (15 minutes for 20 meters)
compound pressure gauge reading is –101 kPa (–76 cmHg).
5. Close the low pressure side valve handle of the gauge manifold valve.
6. Open fully the valve stem of the packed valves (both gas and liquid sides).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.
Compound pressure gauge
Handle Lo
Charge hose
Connecting pipe
Pressure gauge
Manifold valve
Charge hose
Vacuum pump adapter for
Packed valve at gas side
Service port (Valve core (Setting pin))
Packed valve at liquid side
Vacuum
pump
Handle Hi
(Keep full closed)
• KEEP IMPORTANT 6 POINTS FOR PIPING WORK.
(1) Take away dust and moisture (inside of the connecting pipes).
(2) Tighten the connections (between pipes and unit).
(3) Evacuate the air in the connecting pipes using a VACUUM PUMP.
(4) Check gas leak (connected points).
CAUTION
stopper.
Packed valve handling precautions
Pipe size of Packed Valve Size of Hexagon wrench
12.70 mm and smallers A = 4 mm
15.88 mm A = 5 mm
Cap Cap Size (H) Torque
Valve Rod Cap
14~18 N·m
(1.4 to 1.8 kgf·m)
33~42 N·m
(3.3 to 4.2 kgf·m)
Service Port Cap
H14 8~12 N·m
(0.8 to 1.2 kgf·m)
H17 14~18 N·m
(1.4 to 1.8 kgf·m)
• Securely tighten the valve cap with torque in the following table:
Hexagon wrench
is required
Service Port Cap
Valve Rod Cap
EN
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ELECTRICAL WORKSELECTRICAL WORKS
Model RAS-24TKVG-UA
Power source
Maximum running current 12.0A
Circuit breaker rating 15.0A
Power supply cable 2or more)
Connecting cable 2or more)
The power supply can be selected to connect to indoor unit or outdoor unit. Choose proper way and connect the power supply and connecting cable by follow
the instruction as following.
Wiring Connection
Wiring of the connecting cable can be carried out without removing the
front panel.
1. Remove the air inlet grille.
Open the air inlet grille upward and pull it toward you.
2. Remove the terminal cover and cord clamp.
3. Insert the connecting cable (according to the local cords) into the pipe hole
on the wall.
4. Take out the connecting cable through the cable slot on the rear panel so
that it protrudes about 20 cm from the front.
5. Insert the connecting cable fully into the terminal block and secure it tightly
with screws.
6. Tightening torque : 1.2 N·m (0.12 kgf·m)
7. Secure the connecting cable with the cord clamp.
unit.
Indoor unit
Front panel
Air inlet grille
Screw
Screws
Terminal cover
Cord clamp
performed.
How to install the air inlet grille on the indoor
unit
the outdoor unit.
matching numbers on the terminal block of indoor and outdoor unit.
3. Insert the power cord and the connecting cable carefully into the terminal
block and secure it tightly with screws.
Locate them so that they do not touch any electrical or metal parts.
5. Secure the power cord and the connecting cable with the cord clamp.
6. Attach the electric parts cover and the valve cover on the outdoor unit.
Outdoor unit
Terminals block
Valve cover
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Power Supply Input at Indoor Unit Terminal Block (Recommend)
Power Supply Input at Outdoor Unit Terminal Block (Optional)
Power Supply and Connecting Cable Connection
Indoor Unit
Indoor Unit
Outdoor Unit
Outdoor Unit
Power supply cable
Connecting cable
Connecting cable
Power supply cable
connect to
Connecting cable
connect to
Connecting cable
connect to
Earth line
Earth line
Earth line
Earth line
Earth line
Earth line
Power cord
Power cord
Connecting cable
Connecting cable
Terminal block
Terminal block
Connecting
cable
Connecting cable
Earth line
Earth line
Earth line
Earth line
Power supply
cable
Connecting
cable
Connecting cable
Terminal block (L N 1 2 3)
Terminal block (L N 1 2 3)
Terminal block (L N 1 2 3)
Power supply
cable
Stripping length of the power
supply cable
Stripping length of the
connecting cable
Stripping length of the
connecting cable
EN
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Power Supply Input Wiring Diagram
Power supply
input
Indoor
Terminal
Outdoor
Terminal
CHASSIS
CHASSIS
EARTH
INDOOR UNIT
OUTDOOR UNIT
Power supply
input
Indoor
Terminal
Outdoor
Terminal
CHASSIS
CHASSIS
EARTH
INDOOR UNIT
OUTDOOR UNIT
CAUTION
1. The power supply must be same as the rated of air conditioner.
2. Prepare the power source for exclusive use with air conditioner.
3. Circuit breaker must be used for the power supply line of this air conditioner.
6. Perform wiring works so as to allow a general wiring capacity.
7. Wrong wiring connection may cause some electrical part burn out.
9. This product can be connected to main power supply.
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OTHERSOTHERS
Gas Leak Test
Remote Control A-B Selection
Check places for
the indoor unit.
Check places for
the outdoor unit.
or soap water.
• When two indoor units are installed in the same room or adjacent two
in factory shipment.)
• The remote control signal is not received when the settings of indoor unit
connecting the piping and cables.
To separate using of remote control for each indoor unit in case of 2 air
conditioner are installed near.
Remote Control B Setup.
2. Point the remote control at the indoor unit.
pencil. “00” will be shown on the display (Picture 1).
and “00” will disappear and the air conditioner will turn OFF. The Remote
2).
Note : 1. Repeat above step to reset Remote Control to be A.
2. Remote Control A have not “A” display.
3. Default setting of Remote Control from factory is A.
1 2
Test Operation
10 seconds. (The beeper will make a short beep.)
OPERATION /
Auto Restart Setting
Information
Turn it on as required.
set the operation. (3 beep sound and OPERATION lamp blink 5 time/sec
for 5 seconds)
cancel the operation. (3 beep sound but OPERATION lamp does not
blink)
OPERATION does not activate.
in the same operating mode as before the power failure.
How to set the Auto Restart
EN
SILENT SILENT
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Piping necessary to change the are nut / machining
size due to pipe compression
1) Flare nut width: H
(mm)
2) Flare machining size: A
(mm)
Connect the indoor / outdoor units to the existing pipe.
pipe.)
APPENDIXAPPENDIX
Work instructions
The existing R22 and R410A piping can be reused for
inverter R32 product installations.
Conrming the existence of scratches or dents on
the existing pipes and conrming the reliability of
the pipe strength are conventionally referred to the
local site.
If the specied conditions can be cleared, it is
possible to update existing R22 and R410A pipes
to those for R32 models.
Basic conditions needed to reuse existing
pipes
Check and observe the presence of three conditions in
the refrigerant piping works.
1. Dry (There is no moisture inside of the pipes.)
2. Clean (There is no dust inside of the pipes.)
3. Tight (There are no refrigerant leaks.)
Restrictions for use of existing pipes
In the following cases, the existing pipes should
not be reused as they are. Clean the existing pipes
or exchange them with new pipes.
pipes for the refrigerant piping works.
2. When the existing pipe thickness is thinner than the
use new pipes for the refrigerant piping works.
• The operating pressure of R32 is high (1.6 times
that of R22). If there is a scratch or dent on the pipe
in the worst case.
* Pipe diameter and thickness (mm)
5. When a commercially available dryer is attached to the
existing pipes.
• There is the possibility that copper green rust has
been generated.
6. When the existing air conditioner is removed after
refrigerant has been recovered.
normal oil.
• The refrigerator oil is copper rust green in color:
There is the possibility that moisture has mixed with
the oil and rust has been generated inside the pipe.
or a bad smell.
• A large quantity of shiny metal dust or other wear
residue can be seen in the refrigerant oil.
7. When the air conditioner has a history of the
compressor failing and being replaced.
8. When temporary installation and removal of the air
conditioner are repeated such as when leased etc.
9. If the type of refrigerator oil of the existing air
series.
deteriorate.
by our company and represent our views on our air
pipes of air conditioners that have adopted R32 in other
companies.
Curing of pipes
When removing and opening the indoor or outdoor unit for
• Otherwise rust may be generated when moisture or
foreign matter due to condensation enters the pipes.
pipes are necessary.
3. When the outdoor unit was left with the pipes
4. When refrigerant cannot be recovered using a
refrigerant recovery unit.
• There is the possibility that a large quantity of dirty
oil or moisture remains inside the pipes.
WARNING
NOTE
Is it possible to operate the existing air conditioner?
• Remove the existing air conditioner from the piping
remove any remains inside of the pipe.
Note:
branching pipe.
Was largely discolored oil or a large quantity
the color of the oil changes to a muddy
or black color.)
Nitrogen gas pressure 0.5 MPa
Clean the pipes or use new pipes.
large quantity of remains are present.)
NO
NO
YES
YES
YES
NO
H
Existing pipes: Cannot be used.
• Use new pipes.
Are there scratches or dents on the existing pipes?
• After the existing air conditioner is operated in cooling
refrigerant.
• For cleaning the pipes and recovering oil
• Refrigerant recovery: Pump down method
Test run
leak check
A
Pipe outer diameter Ø6.4 Ø9.5 Ø12.7
Thickness 0.8 0.8 0.8
R22
Placement
location Term Curing manner
Outdoors 1 month or more Pinching
Less than 1 month Pinching or taping
Indoors Every time
Copper pipe outer
diameter Ø6.4 Ø9.5 Ø12.7
9.1 13.2 16.6
For R22 9.0 13.0 16.2
Copper pipe outer
diameter Ø6.4 Ø9.5 Ø12.7
17 22 26
For R22 Same as above 24
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