This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
WARNING
Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to
have a service person do it. Do not attempt it yourself . The cleaning diagram for the air filter is there for the
service person, and not for the customer.
CAUTION
This manual indicates the indoor unit (Under Ceiling type) and it’s accessory only.
About outdoor units subject, refer as below SERVICE MANUAL.
• Make sure to ask the qualified installation prof essional in electric work to install
the air conditioner .
If the air conditioner is inappropriate installed by yourself , it may cause water leak,
electric shock, fire, and so on.
• Be sure to provide grounding.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground
wires for telephone cab les .
CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAINS SUPPLY
This appliance must be connected to the mains by means of a switch with a
The installation fuse (25A D type ) must be used for the power
supply line of this conditioner.
WARNINGS ABOUT OPERATION
• Cleaning of the air filter and other parts of the air filter involves dangerous w ork in
high places, so be sure to hav e a service person do it. Do not attempt it yourself.
The cleaning diagram for the air filter is there for the service person, and not for
the customer .
• Avoid cooling the room too strong or exposing the human body to cool breeze for
a long time as it is bad for the health.
• When you notice something abnormal with the air conditioner (smells like something scorching, poor cooling, etc.), immediately turn off the main switch, the
circuit breaker, from the mains to stop the air conditioner, and contact the dealer.
If the air conditioner is continuously operated with something abnormal, it may
cause machine failure, electric shock, fire, and so on.
WARNINGS ABOUT MOVEMENT AND REPAIR
• Do not move or repair any unit by yourself.
Since there is high voltage inside the unit, you may get electric shock when
removing the cov er and main unit.
• Whenever the air conditioner needs repair, make sure to ask the dealer to do it.
If it is repaired imperfectly, it may cause electric shock or fire.
• When moving the air conditioner f or re-installing at another place , ask the dealer
to do it. If it is imperfectly installed, it may cause electric shock or fire .
4
CAUTION
CAUTIONS ABOUT INSTALLATION
• Be sure to confirm the following cautions.
• Certainly lay the drain hose f or perfect draining.
Bad drainage may cause flooding in the house and getting furniture
wet.
• Make sure to connect the air conditioner to an exclusive power
supply of the rated voltage, otherwise the unit may break down or
cause a fire.
• Do not install the unit in a place where inflammable gas may leak.
If inflammable gas accumulates around the unit, it may cause a fire.
CAUTIONS ABOUT OPERATION
• Carefully read this manual before starting the air conditioner. There
are many important things to keep in mind for daily operation.
• Do not use this air conditioner for special purposes such as preserving food, precision instruments, art objects, breeding animals,
growing potted plants, etc.
• Avoid exposing potted plants and animals to the wind of the air
conditioner , since it badly affects the health and growth of them.
• When the air conditioner is operated with a combustion appliance in
the same place, be careful of ventilation to let fresh air enter the
room.
Poor ventilation causes oxygen shortage.
• Do not place any combustion appliance in a place where it is directly
exposed to the wind of air conditioner, otherwise it may cause
imperfect combustion.
• When the air conditioner is used in a closed room, be careful of
sufficient ventilation of the room. Poor ventilation causes oxygen
shortage.
• Do not touch any switches with wet finger, otherwise you may get an
electric shock.
• If the air conditioner won’t be used for a considera bly long time, turn
off the main switch or the circuit break er, for safety.
• Check the concrete blocks, etc. of the base of the outdoor unit
occasionally.
If the base is left damaged or deteriorated, the unit may topple over
and inflict an injury to a person as the worst case.
• Do not put anything on the outdoor unit nor step onto it. If you do so,
it may not only topple over the unit but also injure yourself.
• To make the air conditioner operate in its original performance,
operate it within the range of the operating temperature specified in
the instructions.
Otherwise it may cause a malfunction, or water leak from the unit.
• Prev ent any liquid from falling into the remote controller. Do not spill
juice, water or any kind of liquid.
Removes dust or trash.
(Provided on the suction port.)
Outdoor unit
Air inlet (Side and rear)
Discharge flap of
discharge port
Change the direction of the air
to be discharged according to
cool/heat mode.
Remote controller
REMOTE CONTROLLER
Air outlet
∗ The image of outdoor unit in the figure is in case Model RA V-SM800AT-E.
6
Pipes and electric wires
PARTS NAME OF REMOTE CONTROLLER
Display section
In the display example , all indicators are displayed for the explanation.
In reality only, the selected contents are indicated.
• When turning on the leak breaker at the first time, [SET
DAT A] flashes on the display part of the remote controller.
While this display is flashing, the model is being automatically
confirmed. Accordingly, wait for a while after [SET DATA]
display has disappeared, and then use the remote controller.
1
8
SET DATA
SETTING
SET
TEST
CODE No.
UNIT No.
R.C. No.
UNIT
CL
Display
section
Operation
section
2
3
4
5
6
7
1
SET DATA display
Displayed during setup of the timer.
2
Operation mode select display
The selected operation mode is display ed.
3
CHECK display
Displayed while the protective device works or a
trouble occurs.
4
Timer time display
Time of the timer is displayed.
(When a trouble occurs, the check code is displayed.)
5
Timer SETIN setup display
When pushing the Timer SETIN b utton, the
display of the timer is selected in order of [OFF]
→ [OFF] repeat OFF timer → [ON]
→ No display.
6
Filter display
If “FILTER ” is displayed, clean the air filter.
7
TEST run display
Displayed during a test run.
8
Flap position display
Displays flap position.
SET DATA
SETTING
TEST
UNIT No.
R.C. No.
CODE No.
10
12
14
9
SWING display
Displayed during up/do wn movement of
the flap.
10
Set up temperature display
The selected set up temp. is displayed.
11
Remote controller sensor display
Displayed while the sensor of the remote
controller is used.
12
PRE-HEAT display
Displayed when the heating operation
starts or defrost operation is carried out.
While this indication is displayed, the
indoor fan stops or the mode enters in
LOW.
13
No function display
Displayed if there is no function even if
the button is pushed.
14
Air volume select displa y
The selected air volume mode is displayed.
(AUTO)
(HIGH)
(MED.)
(LOW)
9
11
13
7
Operation section
Push each button to select a desired operation.
• The details of the operation needs to be set up once, afterward, the air conditioner can be used by pushing
button only.
1
7
8
2
3
9
4
5
1
Air volume select button
Selects the desired air volume mode.
2
Timer set button
TIMER SET button is used when the timer is
set up.
3
Check button
The CHECK button is used for the check
operation. During normal operation, do not
use this button.
4
Fan button
FAN button is used when a fan which is sold on
the market or etc. is connected.
• If “No function” is displayed on the remote
controller when pushing the FAN button, a
fan is not connected.
SET
CL
6
UNIT
10
8
When the button is pushed, the operation
starts, and it stops by pushing the button
again.
When the operation has stopped, the operation
lamp and all the displays disappear.
9
Operation select button
Selects desired operation mode.
10
Set up temperature button
Adjusts the room temperature.
Set the desired set temperature by pushing
button
or .
5
Filter reset button
Resets (Erases) “FILTER ” display.
6
UNIT and AUTO flap button
(No function)
UNIT
7
Operation lamp
Lamp is lit during the operation. Lamp is off
when stopped.
Although it flashes when operating the protection device or abnormal time.
OPTION :
Remote controller sensor
Usually the TEMP. sensor of the indoor unit senses
the temperature. The temper ature on the surrounding of the remote controller can also be sensed.
For details, contact the dealer from which you have
purchased the air conditioner.
8
CORRECT USAGE
When you use the air conditioner f or the first time or when you change the SET DAT A value, follow the procedure below. From the next time, the operation displayed on the remote controller will start by pushing the
button only.
Preparation
Turn on the main power switch and/or the leakage breaker.
• When the power supply is turned on, a partition line is displayed on the display part of the remote controller.
After the power supply is turned on, the remote controller does not accept an operation for appro x. 1 minute,
*
but it is not a f ailure.
REQUIREMENT
• While using the air conditioner , operate it only with button without turning off the main
power switch and the leak breaker.
1
3
2
UNIT
CL
SET
1
Push button.
The operation lamp goes on, and the operation starts.
2
Select an operation mode with the “MODE” button.
One push of the button, and the displa y
changes in the order shown on the right.
• In HEAT mode, if the room temperature reaches to the set temperature, the outdoor unit stops and
the air flow becomes LOW and the air volume decreases.
• In the defrost mode, the fan stops so that cool air is not discharged and PRE-DEF is displayed.
3
Select air volume with “FAN ” button.
One push of the button, and the displa y
changes in the order shown on the right.
• When air volume is “AUTO ”, air volume diff ers according to the room temper ature .
• In DRY mode, “AUTO ” is displayed and the air volume is LOW.
• In heating operation, if the room temperature is not heated sufficiently with VOLUME “LOW ” operation, select “MED. ” or “HIGH ” operation.
AUTOHEATDRYCOOLFAN
AUTO
4
LOW MED. HIGH
4
Determine the set up temperature by pushing the “TEMP. ” or “TEMP. ” button.
Stop
Push button.
The operation lamp goes off, and the operation stops .
9
AUTOMATIC OPERATION (Auto Changeover)
When you set the air conditioner in mode or switch over from AUTO operation because of some settings
change, it will automatically select either cooling, heating, or fan only operation depending on the indoor
temperature.
Start
1
Push this button to start the air conditioner.
2
Mode select button (MODE)
Select Auto .
3
T emperature button
Set the desired temperature.
• In case of cooling, start the operation after approx. 1 minute.
• In case of heating, the operation mode is selected in accordance with the room temperature and operation
starts after approximately 3 to 5 minutes.
• When you select the A uto mode, it is unnecessary to set the fan speed. The FAN speed display will show
AUTO and the fan speed will be automatically controlled.
• After the heating operation has stopped, FAN operation may continue for approx. 30 seconds.
• When the room temperature reaches the set temperature and the outdoor unit stops, the supper low wind is
discharged and the air volume decreases e xcessively. During defrost operation, the fan stops so that cool
air is not discharged and “HEAT READY” is displayed.
• If the Auto mode is uncomfortable, you can select the desired conditions manually.
button
NOTE
When restarting the operation after stop
• When restarting the operation immediately after stop, the air conditioner does not operate for approx. 3
minutes to protect the machine.
Stop
Push button.
Push this button again to stop the air conditioner.
10
ADJUSTMENT OF WIND DIRECTION
• When the air conditioner stops, the flap (adjustment plate of up/down wind direction) directs downward
automatically.
• When the heating operation is in READY states, the flap (adjustment plate of up/down wind direction) directs
upward. The swinging starts after HEAT READY status cleared, SWING is displayed on the remote
controller ev en if the heating oper ation is in READY status.
How to set up the wind direction
1
Push during operation.
The wind direction changes for e v ery push of the button.
In HEAT operation
Direct the flap (adjustment plate of up/down wind direction) downward. If directing
at upward, hot air may not come to the f oot.
Initial setup
In COOL/DRY operation
Direct the flap (adjustment plate of up/down wind direction) upward. If directing it
downward, the dew may from on the surface of the air discharge port and may
drop down.
Initial setup
How to start swinging
1
Push , set the flap (adjustment
plate of up/down wind direction) direction
to the lowest position, and then push
again.
SWING is displayed and the up/do wn wind
direction is automatically selected.
How to stop swinging
1
Push SWING/WIND again while the flap is
swinging.
• The flap stops at a position when you push.
After then, if pushing , the wind
direction descends from the highest position.
• In COOL/DRY oper ation, the flap does not
stop as it directs downward. If stopping the
flap as it directs downward during swing
operation, it stops after moving to the 3
position from the highest position.
UNIT
CL
SET
In FAN operation
Initial setup
rd
Display when stopping the swing
In all modes
Series of
operation
11
Fan/Heat
operation
Cool/Dry
operation
TIMER OPERATION
A type of timer operation can be selected from the following three types.
OFF timer: The operation stops when the time of timer has reached the set time.
Repeat OFF timer : Every time, the operation stops after the set time has passed.
ON timer: The operation starts when the time of timer has reached the set time.
Timer operation
2
1
Push TIMER SET button.
• The timer display (type) changes for every
push of the button.
• SET DATA and display flashes.
2
Push to select “SET TIME”.
SET
3
1
CL
4
UNIT
OFF
(OFF timer)(Repeat OFF timer)
OFFON
(ON timer)
No display
For every push of button, the set time increases in the unit of 0.5 hr (30 min utes).
The maximum set time is 72.0 hr .
For every push of button, the set time decreases in the unit of 0.5 hr (30 minutes).
The minimum set time is 0.5 hr .
3
Push SET button.
• SET DATA display disappears and disp lay goes on.
(When ON timer is activated, time is displayed, and after time of the timer has been up, displa ys other
than ON disappear.)
Cancel of timer operation
4
Push CL button.
• TIMER display disappears.
NOTICE
• When the operation stops after the timer reached the preset time, the Repeat OFF timer resumes the
operation by pushing button and stops the operation after the time of the timer has reached
the set time.
12
HINTS FOR ECONOMICAL OPERATION
Maintain room temperature at comfortable level
Clean air filters
The clogged air filter impairs the performance of the air conditioner .
Never open doors and windows more often than necessary
To keep cool or warm air in the room, never open doors and windo ws more often than necessary.
Window curtains
In cooling, close the curtains to avoid direct sunlight.
In heating, close the curtains to keep the heat in.
Get uniform circulation of room air
Adjust the air flow direction for the e ven
circulation of room air .
Clean, please.
Gee, chilly
Control
Blows upward
Cool and
dry air
Please close
Air flow adjustment
Warm
air
Blows downward
13
MAINTENANCE
Cleaning of remote controller
CAUTION
• Use a dry cloth to wipe the remote controller.
• A cloth dampened with cold water may be used on the indoor unit if
it is very dirty.
• Never use a damp cloth on the remote controller.
• Do not use a chemically-treated duster for wiping or lea ve such
materials on the unit for long. It may damage or fade the surface of
the unit.
• Do not use benzine, thinner, polishing powder, or similar solvents f or
cleaning. These may cause the plastic surface to crack or deform.
If you do not plan to use the unit for more than 1 month
(1) Operate the fan for 3 to 4 hours to dry inside the unit
• Operate “FAN ONLY” mode with set temperature 30°C.
(2) Stop the air conditioner and turn off the main power switch or the circuit break er.
Checks before operation
(1) Check that the air filters are installed.
(2) Check that the air outlet or inlet is not blocked.
(3) Turn on the main power switch or the circuit breaker for the main power supply to the air conditioner.
WARNING
Cleaning of the air filter and other parts of the air filter involves dangerous w ork in high places, so be sure
to have a service person do it.
Do not attempt it yourself .
NOTE
For Air conditioning system which is operated regularly, cleaning and maintenance of the indoor/outdoor
units are strongly recommended.
As a general rule, if an indoor unit is operated for about 8 hours daily, the indoor/outdoor units will need to
be cleaned at least once ev ery 3-MONTH. This cleaning and maintenance shall be carried out b y a
qualified person.
F ailure to clean the indoor/outdoor units regularly will result in poor perf ormance, icing, water leaking and
ev en compressor failure.
14
AIR CONDITIONER OPERATIONS AND PERFORMANCE
3 minutes protection function
3-minutes protection function prev ents the air conditioner from starting for initial 3 minutes after the main
power switch/circuit break er is turned on for re-starting the air conditioner .
Power failure
Po wer failure during operation will stop the unit completely.
• To restart the operation, push the START/STOP button on the remote controller.
• Lightning or a wireless car telephone operating nearby ma y cause the unit to malfunction. Turn off the main
power switch or circuit breaker and then turn them on again. Push the START/STOP button on the remote
controller to restart.
Heating characteristics
Preheating operation
The air conditioner will not deliver warm air immediately after it is turned on. Warm air will start to flow out
after approximately 5 minutes when the indoor heat e xchanger w armed up .
Warm air control (In heating operation)
When the room temperature reaches the set temperature, the fan speed is automatically reduced to prevent
to blow cold draft. At this time, the outdoor unit will stop.
Defrosting operation
If the outdoor unit is frosted during the heating operation, defrosting starts automatically (for approximately
2 to 10 minutes) to maintain the heating capacity.
• The fans in both indoor and outdoor units will stop during the defrosting operation.
• During the defrosting operation, the defrosted water will be drained from the bottom plate of the outdoor
unit.
Heating capacity
In the heating operation, the heat is absorbed from the outside and brought into the room. This way of heating
is called heat pump system. When the outside temperature is too low, it is recommended to use another
heating apparatus in combination with the air conditioner .
Attention to snowfall and freeze on the outdoor unit
• In snowy areas, the air inlet and air outlet of the outdoor unit are often covered with snow or frozen up .
If snow or freeze on the outdoor unit is left as it is, it may cause machine failure or poor warming.
• In cold areas, pay attention to the dr ain hose so that it perfectly drains water without water remaining inside
for freeze prevention. If water freezes in the drain hose or inside the outdoor unit, it may cause machine
failure or poor warming.
Air conditioner operating conditions
For proper perf ormance, operate the air conditioner under the following temperature conditions:
CoolingOutdoor temperature: –5°C to 43°C (RAV-SM
operation
Room temperature: 21°C to 32°C (Dry valve temp.), 15°C to 24°C (Wet valve temp.)
CAUTION
HeatingOutdoor temperature: –15°C to 15°C (Wet valve temp.)
operation
Room temperature: 15°C to 28°C (Dry valve temp.)
If air conditioner is used outside of the above conditions, safety protection may work.
Room relative humidity – less than 80 %. If the air conditioner operates
in excess of this figure, the surface of the air conditioner ma y cause dewing.
AT-E) : –15 to 43°C (RAV-SP
***
15
***
AT-E)
RE-INSTALLATION
DANGER
Ask the dealer or an installation professional to re-install the air conditioner to a new place or
move it to another place and to observe the following items.
If the air conditioner is inappropriate installed by yourself, it may cause electric shock or fire.
Do not install the air conditioner in the following places
• Do not install the air conditioner in any place within 1 m from a TV, stereo, or radio set. If the unit is installed
in such place, noise transmitted from the air conditioner affects the operation of these appliances.
• Do not install the air conditioner near a high frequency appliance (sewing machine or massager f or business
use, etc.), otherwise the air conditioner ma y malfunction.
• Do not install the air conditioner in a humid or oily place, or in a place where steam, soot, or corrosive gas is
generated.
• Do not install the air conditioner in a salty place such as seaside area.
• Do not install the air conditioner in a place where a great deal of machine oil is used.
• Do not install the air conditioner in a place where it is usually exposed to strong wind such as in seaside
area or on the roof or upper floor of a building.
• Do not install the air conditioner in a place where sulfureous gas generated such as in a spa.
• Do not install the air conditioner in a vessel or mobile crane.
Be careful with noise or vibrations
• Do not install the air conditioner in a place where noise by outdoor unit or hot air from its air outlet annoys
your neighbors.
• Install the air conditioner on a solid and stable f oundation so that it prevents transmission of resonating,
operation noise and vibration.
• If one indoor unit is operating, some sound may be audible
from other indoor units that are not operating.
TROUBLES AND CAUSES
CAUTION
If any of the follo wing conditions occur, turn off the main power supply switch and immediately contact the
dealer :
• The operation lamps flash at short intervals (5 Hz) even though y ou have tried turning off the power
supply and turning on again after 2 or 3 minutes.
• Switch operation does not work properly.
• The main power fuse often bl ows out, or the circuit breaker is often activated.
• A foreign matter or water fall inside the air conditioner.
• Any other unusual conditions are observed.
16
Before you ask for servicing or repairs, chec k the following points.
Inoperative
• The main power switch is turned off.
• The circuit breaker is activated to cut off power supply.
• The main power fuse has bl o wn out.
• Stoppage of electric current.
Does not cool well or heat well
• The air inlet and/or outlet of the outdoor unit is blocked.
• Doors or windows are opened.
• The fan speed is set to low.
• The air conditioner is set in the DRY mode .
• The set temperature is too high. (In cooling operation)
• The set temperature is too low. (In heating operation)
Indoor unit or outdoor unit makes a strange noise.
• When the temperature suddenly changes, the indoor or outdoor unit
occasionally makes a strange noise because of expansion/
contraction of parts or change of refrigerant flow.
The room air is smelly or a bad odor comes from the air conditioner.
• Smells impregnated in the walls‚ carpets, furniture, clothing, or furs, come out.
Outdoor unit is frosted in heating operation.
Water drains from outdoor unit.
• The outdoor unit is sometimes frosted in heating operation.
In that case, the unit automatically performs defrosting
(for 2 to 10 minutes) for increasing the heating efficiency.
• In defrosting operation, both the indoor and outdoor units stop air flow.
• Hiss sound is heard when flow of the refrigerant is changed for defrosting.
• Resultant water of automatic defrosting in heating operation drains from
outdoor unit.
Air flow changes though the FAN button is not set to the AUTO mode.
These are not failures.Recheck
• When the temperature of bl own air drops in heating oper ation,
the air conditioner automatically changes or stops air flow from the
indoor unit not to make persons in the room f eel chilly.
• Air flow from the indoor unit is occasionally changed in the cooling operation.
A white mist of chilled air or water is generated from the outdoor unit.
• The indoor unit in cooling operation or the outdoor unit in defrosting
operation occasionally steams.
Calm
17
Accessory parts and Parts to be procured locally
r Accessory parts
Part name
Owner’s Manual
Installation Manual
Installation pattern
Thermal insulation
pipe
Washer
Hose band
Q’ty
1
1
1
2
4
2
Shape
This manual
M10 × Ø25
<Separate sold parts>
Part name
Q’ty1ShapeUsage
Usage
—
—
Drawing-out port of
hanging bolt pipe
For thermal insulation of
pipe connecting section
For holding down unit
For connecting drain
pipe
—
—
Part name
Drain hose
Bushing
Thermal insulator
Thermal insulator
of top plate
Banding band
Q’ty
1
1
1
1
2
Shape
For connecting drain pipe
For protection of edge at
power taking-in port
For thermal insulation of drain
hose (10t × 200 × 200)
For upper pipe hole of indoor
unit (6t × 130 × 160)
For prevention of open of
drain hose thermal insulator
Connecting cable (indoor and outdoor cable)
H07RN-F or 245IEC66 (1.5mm² or more)
Thermal insulation for refrigerant pipe
(10mm or more, thermal insulating foam polyethylene)
Thermal insulation for drain pipe
(10mm or more, foam polyethylene)
Drain pipe (Outer 26mm (diam.)) (VP20)
Tapes
18
1
• Ensure that all Local, National and International regulations are satisfied.
• Read this “PRECAUTIONS FOR SAFETY” carefully before Installation.
• The precautions described below include the important items regarding safety. Observe them without fail.
• After the installation work, perform a trial operation to check for any problem.
Follow the Owner’s Manual to explain how to use and maintain the unit to the customer.
• Turn off the main power supply switch (or breaker) before the unit maintenance.
• Ask the customer to keep the Installation Manual together with the Owner’s Manual.
PRECAUTIONS FOR SAFETY
CAUTIONNew Refrigerant Air Conditioner Installation
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT
DESTROY OZONE LAYER.
The characteristics of R410A refrigerant are ; easy to absorb water, oxidizing membrane or oil, and its pressure
is approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil
has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or
refrigerating oil does not enter the refrigerating cycle.
To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging
port of the main unit and installation tools are charged from those for the conventional refrigerant.
Accordingly the exclusive tools are required for the new refrigerant (R410A).
For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does
not enter. Moreover, do not use the existing piping because there are problems with pressure-resistance force
and impurity in it.
CAUTIONTo Disconnect the Appliance from Main Power Supply.
This appliance must be connected to the main power supply by means of a switch with a contact separation of
at least 3 mm.
The installation fuse (25A D type ) must be used for the power supply line of this conditioner.
WARNINGS
• Ask an authorized dealer or qualified installation professional to install/maintain the air
conditioner.
Inappropriate installation may result in water leakage, electric shock or fire.
• Turn off the main power supply switch or breaker before attempting any electrical work.
Make sure all power switches are off. Failure to do so may cause electric shock.
• Connect the connecting cable correctly.
If the connecting cable is connected in a wrong way, electric parts may be damaged.
• When moving the air conditioner for the installation into another place, be very careful not
to enter any gaseous matter other than the specified refrigerant into the refrigeration cycle.
If air or any other gas is mixed in the refrigerant, the gas pressure in the refrigeration cycle becomes
abnormally high and it resultingly causes pipe burst and injuries on persons.
• Do not modify this unit by removing any of the safety guards or by by-passing any of the
• Exposure of unit to water or other moisture before installation may cause a short-circuit of
electrical parts.
Do not store it in a wet basement or expose to rain or water.
19
1
PRECAUTIONS FOR SAFETY
• After unpacking the unit, examine it carefully if there are possible damage.
• Do not install in a place that might increase the vibration of the unit.
• To avoid personal injury (with sharp edges), be careful when handling parts.
• Perform installation work properly according to the Installation Manual.
Inappropriate installation may result in water leakage, electric shock or fire.
• When the air conditioner is installed in a small room, provide appropriate measures to
ensure that the concentration of refrigerant leakage occur in the room does not exceed the
critical level.
• Install the air conditioner securely in a location where the base can sustain the weight
adequately.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.
• If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas might
generate.
• Electrical work must be performed by a qualified electrician in accordance with the
Installation Manual. Make sure the air conditioner uses an exclusive power supply.
An insufficient power supply capacity or inappropriate installation may cause fire.
• Use the specified cables for wiring connect the terminals securely fix. To prevent external
forces applied to the terminals from affecting the terminals.
• Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.
• Do not install the air conditioner in a location subject to a risk of exposure to a combustible
gas.
If a combustible gas leaks, and stays around the unit, a fire may occur.
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2
SELECTION OF INSTALLATION PLACE
WARNING
• Install the air conditioner at enough strong place to withstand the weight of the unit.
If the strength is not enough, the unit may fall down resulting in injury.
• Perform a specified installation work to guard against an earth quake.
An incomplete installation can cause accidents by the units failing and dropping.
• Install the air conditioner at a height 2.5m or more from the floor.
If you insert your hands or others directly into the unit while the air conditioner operates, it is dangerous
because you may contact with revolving fan or active electricity.
CAUTION
• Do not install the air conditioner in a location subject to a risk of exposure to a combustible
gas.
If a combustible gas leaks and stays around the unit, a fire may occur.
Upon approval of the customer, install the air conditioner in a place that satisfies the
following conditions.
• Place where the unit can be installed horizontally.
• Place where a sufficient servicing space can be ensured for safety maintenance and check.
• Place where drained water will not cause any problem.
Avoid installing in the following places.
• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of sulfide gas
(hot spring). (Should the unit be used in these places, special protective measures are needed.)
• Place exposed to oil, vapor, oil smoke or corrosive gas.
• Place where organic solvent is used nearby.
• Place close to a machine generating high frequency.
• Place where the discharged air blows directly into the window of the neighboring house. (For outdoor unit)
• Place where noise of the outdoor unit is easily transmitted.
(When installing the air conditioner on the boundary with the neighbor, pay due attention to the level of noise.)
• Place with poor ventilation. (Before air ducting work, check whether value of air volume, static pressure and
duct resistance are correct.)
Installation space
Secure the specified space in the figure for installation and servicing.
250 or more250 or more
500 or more
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