Daikin VRV FXAQ20ARVE6 User manual

SYSTEM Air Conditioners
OPERATION MANUAL
MODELS
Wall-mounted type
FXAQ20ARVE6
FXAQ25ARVE6
FXAQ32ARVE6
FXAQ40ARVE6
FXAQ50ARVE6
FXAQ63ARVE6
FXARQ20ARVE6
FXARQ25ARVE6
FXARQ32ARVE6
FXARQ40ARVE6
FXARQ50ARVE6
FXARQ63ARVE6
3P556728-1D M18P037B
Operation Manaul, 3P556728-1D, A-4 size, Dt.: 08Jul19/16July/16jul-2nd

1
Thank you for purchasing this Daikin air conditioner.
Carefully read this operation manual before using
the air conditioner. It will tell you how to use the unit
properly and help you if any trouble occurs. This
manual explains about the indoor unit only. Use it
along with the operation manual for the outdoor
unit. After reading the manual, file it away for future
reference.
The English text is the original instruction. Other
languages are translations of the original instruc-
tions.
Important information regarding the
refrigerant used
This product contains fluorinated greenhouse
gases covered by the Kyoto Protocol.
(1) GWP = global warming potential
Periodical inspections for refrigerant leaks may be
required depending on European or local legislation.
Please contact your local dealer for more information.
SAFETY PRECAUTIONS
To gain full advantage of the air conditioner’s func-
tions and to avoid malfunction due to mishandling,
please read this operation manual carefully before
use.
This air conditioner is classified under “appliances
not accessible to the general public”.
•The precautions described herein are clas-
sified as WARNING and CAUTION. They
both contain important information regard-
ing safety. Be sure to observe all precau-
tions without fail.
WARNING
........ Failure to follow these instruc-
tions properly may result in
personal injury or loss of life.
CAUTION......... Failure to observe these
instructions properly may
result in property damage or
personal injury, which may
be serious depending on the
circumstances.
•After reading, keep this manual in a conve-
nient place so that you can refer to it when-
ever necessary. If the equipment is
transferred to a new user, be sure also to
hand over the manual.
Drain pipe
Name plate
Refrigerant pipe transmission
wiring
Remote controller
Horizontal flaps
(vertical air outlet direction adjustment flaps)
Louver
(horizontal air outlet direction
adjustment
flaps)
Air outlet
Air filter
Air Inlet
Ground wire
Conducts electricity from the
unit into the ground to prevent
electric shock.
(Indoor unit model name)
Power supply wiring
Refrigerant type R410A
GWP(1) value 1975

WARNING
•Consult your local dealer about installation
work.
Doing the work yourself may result in water
leakage, electric shocks or fire hazards.
•Consult your local dealer regarding modifi-
cation, repair and maintenance of the air
conditioner.
Improper workmanship may result in water
leakage, electric shocks or fire hazards.
•Beware of fire in case of refrigerant leakage.
If the air conditioner is not operating correctly,
i.e. not generating cool or warm air, refrigerant
leakage could be the cause.
Consult your dealer for assistance.
The refrigerant used for the air conditioner is
safe and normally does not leak. However, if
the refrigerant leaks and gets in contact with a
naked burner, heater or cooker, it may generate
hazardous compounds. Turn off the air condi-
tioner and call the dealer. Make sure to turn on
the air conditioner after the qualified service
person confirms that the leakage is repaired.
•Consult your local dealer regarding reloca-
tion and reinstallation of the air conditioner.
Improper installation work may result in leak-
age, electric shocks or fire hazards.
CAUTION
•Do not allow a child to mount on the outdoor
unit or avoid placing any object on it.
Falling or tumbling may result in injury.
•
The appliance is not intended for use by
unattended young children or persons who
are incompetent to operate air conditioners.
It may result in injury or electric shock.
•Children should be watched so that they do
not play with the unit or its remote control-
ler.
Accidental operation by a child may result in
injury or electric shock.
•Do not place objects in direct proximity of
the outdoor unit and do not let leaves and
other debris accumulate around the unit.
Leaves are a hotbed for small animals which
can enter the unit. Once in the unit, such ani-
mals can cause malfunctions, smoke or fire
when making contact with electrical parts.
•Do not let children play on or around the
outdoor unit.
If they touch the unit carelessly, injury may be
caused.
HOW TO ADJUST THE HORIZON-
TAL FAN DIRECTION ANGLE
Hold the tabs on edge louvers (horizontal air outlet
direction adjustment flaps) down slightly and
adjust left and right to match the room conditions
or your preference.
Stop the horizontal flaps at a position where you
can hold the tabs and adjust it left and right.
MAINTENANCE
(FOR SERVICE PERSONNEL)
WARNING
•Only a qualified person is allowed to per-
form maintenance without daily mainte-
nance.
•
Before touching any of connection wirings,
be sure to turn off all power supply switches.
•Contact professional personnel about
attachment of accessories and be sure to
use only accessories specified by the man-
ufacturer.
If a defect results from your own workmanship, it
may result in water leaks, electric shock or fire.
•Do not use flammable materials (e.g., hair-
spray or insecticide) near the product.
Do not clean the product with organic sol-
vents such as paint thinner.
The use of organic solvents may cause crack
damage to the product, electric shocks, or fire.
•Consult your dealer regarding cleaning the
inside of the air conditioner.
Improper cleaning may cause breakage of plas-
tic parts, water leakage and other damage as
well as electric shocks.
CAUTION
•Before cleaning, be sure to stop unit opera-
tion, turn the power circuit breaker off or
remove the power cord.
Otherwise, an electric shock and injury may
result.
•Do not wash the air conditioner with water,
as this may result in electric shocks or fire.
2

•Watch your steps at the time of air filter
cleaning or inspection.
High-place work is required, to which utmost
attention must be paid.
If the scaffold is unstable, you may fall or topple
down, thus causing injury.
NOTE
•
Do not remove the air filter except when cleaning.
This may cause breakage.
HOW TO CLEAN THE AIR FILTER
Clean the air filter when the display shows “ ”
(TIME TO CLEAN AIR FILTER).
•It will display that it will operate for a set amount
of time.
•Increase the frequency of cleaning if the unit is
installed in a room where the air is extremely
contaminated.
•If the dirt becomes impossible to clean, change
the air filter (Air filter for exchange is optional)
1. Open the front panel.
Place your fingers on the indentation on
the left and right sides of the main unit and
open until the panel stops.
(Follow the same procedure for closing.)
2. Pullout the air filter.
Push up the tab in the center of the air filter
slightly then pull out in a downward direction.
Use vacuum cleaner A)
3. Clean the air filter.
or wash the air filter
with water B).
A) Using a vacuum cleaner
B) Washing with water
When the air filter is very
dirty, use soft brush and
neutral detergent
Remove water and dry in the shade.
NOTES
•Do not wash the air filter with hot water of more
than 50°C, as doing so may result in discolora-
tion and/or deformation.
•Do not expose it to fire, as doing so may result
in burning.
4. Attach the air filter.
Once cleaning is done be sure to replace the
air filter as it was.
5. Shut the front panel.
Refer to item No.1.
6. Press the FILTER SIGN RESET button on
the remote controller.
The “TIME TO CLEAN AIR FILTER” display
vanishes.
HOW TO CLEAN THE AIR OUTLET AND
EXTERIOR
•Clean with soft cloth.
•When it is difficult to remove stains, use water or
neutral detergent.
NOTES
•Do not use gasoline, benzene, thinner, polish-
ing powder, liquid insecticide. It may cause dis-
coloring or warping.
•Do not use water or air of 50°C or higher for
cleaning air filters.
•When the flap is extremely contaminated,
remove it as below and clean or exchange it.
(Flap for exchange is optional.)
HOW TO CLEAN THE FRONT PANEL
You can remove the front panel to clean it.
NOTES
•Hold the front panel firmly so that it does not fall.
•Do not use gasoline, benzene, thinner, polish-
ing powder, liquid insecticide. It may cause dis-
coloring or warping.
•Do not let the indoor unit get wet. It may cause
an electric shock or a fire.
•Do not scrub firmly when washing the blade
with water.
The surface sealing may peel off.
•Do not use water or air of 50°C or higher for
cleaning air filters and outside panels.
•Make sure the front panel is solidly in place.
3

Place your fingers on the indentation on
the left and right sides of the main unit and
open until the panel stops.
1. Open the front panel.
(Follow the same procedure for closing.)
2. Remove the front panel.
Push the axes on either side of the front panel
towards the center of the main unit and
remove.
(
You can also remove it by sliding the front panel
either to the left or right and pulling it forward.
)
3. Clean the front panel.
•Wipe gently with a soft wet cloth.
•Only use neutral cleaning agents.
•After washing off, wipe off any excess water
and dry in a shaded location.
•When very grimy
Directly apply the type of detergent used for
cleaning ventilation fans or ovens, wait 10
minutes, and then rinse with water.
NOTE
•Do not wash the air conditioner with hot water of
more than 50°C. Doing so may result in discol-
oration or deformation.
4. Attach the front panel.
Set the keys of the front panel into the slots
and push them in all the way.
Close the front panel slowly in this state.
4
Disposal requirements
Your air conditioning product is
marked with this symbol. This means
that electrical and electronic products
shall not be mixed with unsorted
household waste.
Do not try to dismantle the system yourself: the
dismantling of the air conditioning system,
treatment of the refrigerant, of oil and of other
parts must be done by a qualified installer in
accordance with relevant local and national
legislation.
Air conditioners must be treated at a specialized
treatment facility for re-use, recycling and
recovery. By ensuring this product is disposed of
correctly, you will help to prevent potential
negative consequences for the environment and
human health. Please contact the installer or
local authority for more information.
Batteries must be removed from the remote
controller and disposed of separately in
accordance with relevant local and national
legislation.

http://www.daikin.com

MODELS
Wall-mounted type
FXAQ20ARVE6
FXAQ25ARVE6
FXAQ32ARVE6
FXAQ40ARVE6
FXAQ50ARVE6
FXAQ63ARVE6
FXARQ20ARVE6
FXARQ25ARVE6
FXARQ32ARVE6
FXARQ40ARVE6
FXARQ50ARVE6
FXARQ63ARVE6
SYSTEM Air Conditioners
INSTALLATION MANUAL
CAREFULLY READ THESE INSTRUCTIONS BEFORE INSTALLATION.
KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE.
3P556760-1D M18P038C

1
FXAQ20ARVE6
FXAQ25ARVE6
FXAQ32ARVE6
FXAQ40ARVE6
FXAQ50ARVE6
FXAQ63ARVE6
FXARQ20ARVE6
FXARQ25ARVE6
FXARQ32ARVE6
FXARQ40ARVE6
FXARQ50ARVE6
FXARQ63ARVE6
VRV SYSTEM
Air Conditioners
Installation manual
CONTENTS
1. SAFETY PRECAUTIONS...............................................................................................1
2. BEFORE INSTALLATION ..............................................................................................3
3. SELECTING INSTALLATION SITE................................................................................5
4. INDOOR UNIT INSTALLATION .....................................................................................6
5. REFRIGERANT PIPING WORK ....................................................................................9
6. DRAIN PIPING WORK .................................................................................................12
7. ELECTRIC WIRING WORK .........................................................................................13
8. HOW TO CONNECT WIRINGS AND WIRING EXAMPLE ..........................................14
9. FIELD SETTINGS ........................................................................................................20
10. TEST RUN.................................................................................................................... 21
1. SAFETY PRECAUTIONS
Be sure to follow this “SAFETY PRECAUTIONS”.
This product comes under the term “appliances not accessible to the general public”.
This is a class A product. In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
This manual classifies the precautions into WARNINGS and CAUTIONS.
Be sure to follow all the precautions below: They are all important for ensuring safety.
WARNING .........Indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION ..........Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury.
It may also be used to alert against unsafe practices.
•After the installation is completed, test the air conditioner and check if the air conditioner operates properly.
Give the user adequate instructions concerning the use and cleaning of the indoor unit according to the
Operation Manual. Ask the user to keep this manual and the Operation Manual together in a handy place
for future reference.
WARNING
•Ask your local dealer or qualified personnel to carry out installation work.
Improper installation may result in water leakage, electric shocks or a fire.
•Perform installation work in accordance with this installation manual.
Improper installation may result in water leakage, electric shocks or a fire.
•Consult your local dealer regarding what to do in case of refrigerant leakage.
When the air conditioner is installed in a small room, it is necessary to take proper measures so that the
amount of any leaked refrigerant does not exceed the concentration limit in the event of a leakage.
Otherwise, this may lead to an accident due to oxygen deficiency.
•Be sure to use only the specified parts and accessories for installation work.
Failure to use the specified parts may result in the air conditioner falling down, water leakage, electric
shocks, a fire, etc.

2
•Install the air conditioner on a foundation that can withstand its mass.
Insufficient strength may result in the air conditioner falling down and causing injury.
In addition, it may lead to vibration of indoor units and cause unpleasant chattering noise.
•Carry out the specified installation work in consideration of strong winds, typhoons, or earthquakes.
Improper installation may result in an accident such as air conditioner falling.
•Make certain that all electrical work is carried out by qualified personnel according to the applicable legis-
lation (note 1) and this installation manual, using a separate circuit.
In addition, even if the wiring is short, make sure to use a wiring that has sufficient length and never connect
additional wiring to make the length sufficient.
Insufficient capacity of the power supply circuit or improper electrical construction may lead to electric
shocks or a fire.
(note 1) applicable legislation means “All international, national and local directives, laws, regulations and/
or codes which are relevant and applicable for a certain product or domain”.
•Earth the air conditioner.
Do not connect the earth wiring to gas or water piping, lightning conductor or telephone earth wiring.
Incomplete earthing may cause electric shocks or a fire.
A high surge current from lightning or other sources may cause damage to the air conditioner.
•Be sure to install an earth leakage circuit breaker.
Failure to do so may cause electric shocks and a fire.
•Disconnect the power supply before touching the electric components.
If you touch the live part, you may get an electric shocks.
•Make sure that all wiring is secure, using the specified wiring and ensuring that external forces do not act
on the terminal connections or wiring.
Incomplete connection or fixing may cause an overheat or a fire.
•When wiring between the indoor and outdoor units, and wiring the power supply, form the wiring orderly so
that the control box lid can be securely fastened.
If the control box lid is not in place, overheat of the terminals, electric shocks or a fire may be caused.
•If refrigerant gas leaks during installation work, ventilate the area immediately.
Toxic gas may be produced if refrigerant gas comes into contact with a fire.
•After completing the installation work, check to make sure that there is no leakage of refrigerant gas.
Toxic gas may be produced if refrigerant gas leaks into the room and comes into contact with a source of
a fire, such as a fan heater, stove or cooker.
•Never directly touch any accidental leaking refrigerant. This could result in severe wounds caused by frost-
bite.
CAUTION
•Install drain piping according to this installation manual to ensure good drainage, and insulate the piping to
prevent condensation.
Improper drain piping may cause water leakage, make the furniture get wet.
•Install the air conditioner, power supply wiring, remote controller wiring and transmission wiring at least
1 meter away from televisions or radios to prevent image interference or noise.
(Depending on the radio waves, a distance of 1 meter may not be sufficient to eliminate the noise.)
•Install the indoor unit as far as possible from fluorescent lamps.
If a wireless remote controller kit is installed, the transmission distance may be shorter in a room where an
electronic lighting type (inverter or rapid start type) fluorescent lamp is installed.
•Do not install the air conditioner in places such as the following:
1. Where there is mist of oil, oil spray or vapour for example a kitchen.
Resin parts may deteriorate, and cause them to fall out or water to leak.
2. Where corrosive gas, such as sulfurous acid gas, is produced.
Corrosion of copper pipings or brazed parts may cause the refrigerant to leak.
3. Where there is machinery which emits electromagnetic waves.
Electromagnetic waves may disturb the control system, and cause malfunction of the equipment.
4. Where flammable gases may leak, where carbon fibre or ignitable dust is suspended in the air or where
volatile flammables, such as thinner or gasoline, are handled.
If the gas should leak and remained around the air conditioner, it may cause ignition.
•The air conditioner is not intended for use in a potentially explosive atmosphere.

3
2. BEFORE INSTALLATION
Do not exert pressure on the resin parts when opening the unit or when moving it after opening.
Be sure to check the type of R410A refrigerant to be used before doing any work. (Using an incorrect
refrigerant will prevent normal operation of the unit.)
•When opening the unit or moving it after opening, be sure to lift it by holding on to the lifting lugs without
exerting any pressure on other parts, especially, drain piping, and other resin parts.
•Decide upon a line of transport.
•Leave the unit inside its packaging while moving, until reaching the installation site. Use a sling of soft mate-
rial, where unpacking is unavoidable or protective plates together with a rope when lifting, to avoid damage
or scratches to the unit.
•Refer to the installation manual of the outdoor unit for items not described in this manual.
•Do not dispose of any parts necessary for installation until the installation is complete.
2-1 PRECAUTIONS
•Be sure to read this manual before installing the indoor unit.
•When selecting installation site, refer to the installation pattern.
•
•Entrust installation to the place of purchase or a qualified serviceman. Improper installation could lead to
leaks and, in worse cases, electric shock of fire.
•Use only parts provided with the unit or parts satisfying required specifications. Unspecified parts could
cause the unit to fall out of place, or could lead to leaks and, in worse cases, electric shock or fire.
•Do not install or operate the unit in rooms mentioned below.
• Laden with mineral oil, or filled with oil vapor or spray like in kitchens. (Plastic parts may
deteriorate which could eventually cause the unit to fall out of place, or could lead to leaks.)
•Where corrosive gas like sulfurous gas exists. (Copper tubing and brazed spots may corrode,
which could eventually lead to refrigerant leaks.)
• Where volatile flammable gas like thinner or gasoline is used.
• Where exposed to combustible gases and where volatile flammable gas like thinner or gasoline
is used. (Gas in the vicinity of the unit could ignite.)
• Where machines can generate electromagnetic waves. (Control system may malfunction.)
• Where the air contains high levels of salt such as that near the ocean and where voltage
fluctuates greatly such as that in factories. Also in vehicles or vessels.
2-2 ACCESSORIES
Check the following accessories are included with your unit.
Name (1) Installation
panel
Quantity
Shape
Name (4) Clamp (5) Securing screws
(Other)
• Operation manual
• Installation manual
• E-Waste
(Guidelines)
.scp2llams2egral1ytitnauQ
Shape
M4 × 12L
(3) Paper pattern
for installation
1 pc
An inverter air conditioner may cause home appliances product noise. When selecting the location for
installation, keep the air conditioner and wiring a proper distance away (atleast 1 Meter) from radios,
computers and stereo equipments.
7 pcs.1 set
(2) Attachment screws
for the installation panel
M4 × 25L

4
2-3 OPTIONAL ACCESSORIES
•These are two types of remote controllers: wired and wireless. Select a remote controller according to
customer request and install in an appropriate place.
* Refer to an installation manual attached to the remote controller.
NOTE
•If the customer wishes to use a remote controller that is not listed above, select a suitable remote
controller after consulting catalogs and technical materials.
FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND
CHECK AFTER INSTALLATION IS FINISHED.
a. Items to be checked after completion of work
b. Items to be checked at time of delivery
Also review the “SAFETY PRECAUTIONS”
c. Points for explanation about operations
ledoMepytrellortnocetomeR
BRC1C62, BRC1E63, BRC1D61epytderiW
Wireless type Heat pump type
Cooling only type
kcehCruccootylekilsitahw,enodylreporptonfIdekcehcebotsmetI
Are the indoor and outdoor unit fixed
firmly? The units may drop, vibrate or make noise.
Is the outdoor unit fully installed? The unit may malfunction or the compo-
nents burn out.
Is the gas leak test finished? It may result in insufficient cooling.
Is the unit fully insulated? Condensate water may drip.
Does drainage flow smoothly? Condensate water may drip.
Does the power supply voltage correspond
to that shown on the name plate?
The unit may malfunction or the compo-
nents burn out.
Are wiring and piping correct? The unit may malfunction or the compo-
nents burn out.
Is the unit safely earthed? Dangerous at electric leakage.
Is wiring size according to specifications? The unit may malfunction or the compo-
nents burn out.
Is something blocking the air outlet or inlet
of either the indoor or outdoor units? It may result in insufficient cooling.
Are refrigerant piping length and additional
refrigerant charge noted down?
The refrigerant charge in the system is not
clear.
Items to be checked Check
Are the control box cover, air filter, suction grille attached?
Did you explain about operations while showing the instruction manual to your customer?
Did you hand the instruction manual over to your customer?
The items with WARNING and CAUTION marks in the instruction manual are the items pertaining
to possibilities for bodily injury and material damage in addition to the general usage of the product.
Accordingly, it is necessary that you make a full explanation about the described contents and also ask
your customers to read the instruction manual.
BRC4M150W16

6
(2) Consider whether the place where the unit will be installed can support the full weight of the unit,
and reinforce it with boards and beams, etc. if needed before proceeding with the installation.
Also, reinforce the place to prevent vibration and noise before installing.
(The installation pitch can be found on the paper pattern for installation (3), so refer to it when con-
sidering the necessity for reinforcing the location.)
(3) The indoor unit may not be directly installed on the wall. Use the attached installation panel (1)
before installing the unit.
4. INDOOR UNIT INSTALLATION
•Use only accessories and parts which are of the designated specification when installing.
CAUTION
•Install so that the unit does not tilt to either side or forward.
•Do not hold the unit by the horizontal flaps when lifting it. (This may damage the horizontal flaps.)
(1) Open the piping through-hole.
•The refrigerant pipe and drain pipe can be passed out in one of 6 directions: left, bottom-left, back-left,
right, bottom-right, and back-right. (Refer to Fig. 3)
•Using the paper pattern for installation (3), choose where to pass the piping out and open a through-hole
( 80) in the wall.
Open the hole so that there is a downward slope for the drain piping. (See “ 6.DRAIN PIPING WORK ”)
(2) Remove the installation panel (1) from the unit and attach to the wall.
(The installation panel is temporarily attached to the unit with screw.
(Refer to Fig. 3)
(a) Check the location for the hole using the included paper pattern for installation (3).
•Choose a location so that there is at least a 90 mm gap between the ceiling and the main unit.
(b) Temporarily attach the installation panel (1) at the temporary-securing position on the paper pattern for
installation (3) and use a level to make sure the drain hose is either level or tilted slightly downward.
(c) Secure the installation panel (1) to the wall using either screws or bolts.
•If using the attachment screws for the installation panel (2), attach using at least 4 screws on either
side of the recommended installation
cleat position on the included paper pattern for installation (3).
•If using bolts, attach using a M8 - M10 bolt (for a total of 2 bolts) on either side.
•If dealing with concrete, use commercially available foundation bolts (M8 - M10).
(3) If using the left, bottom-left, right, or bottom-right positions for the piping, cut out the through-hole
for the piping in the front grille. (Refer to Fig. 4)
Front grille
Cut out along
the groove.
Cut away
Fig. 3 Fig. 4
Installation panel (1)
Temporary screw
Right pipe
Left pipe
Back-left pipe
Back-right pipe
Bottom-left pipe
Bottom-right pipe

7
(4) Remove the front panel and the service cover. (Refer to Fig. 5)
< How to remove the front panel and service cover >
(1) Open the front panel to the point where it stops.
(2)
Push the axes on either side of the front panel towards the center of the main unit and remove. (You can
also remove it by sliding the front panel either to the left or right and pulling it forward.)
(3) Remove the screw from the service cover and pull the handle forward.
(5) Point the pipe in the direction it will be passed out.
For right, bottom-right,and back-right piping (Refer to Fig. 6)
•
Wrap the drain hose and the refrigerant piping together with the
finishing tape so that the drain hose is below the refrigerant piping.
For left, bottom-left, and left-back piping
•Remove the front grille. (Refer to Fig. 7)
< How to remove the front grille >
Remove the front grille as described below when securing the indoor
unit with screws or when attaching Optional Accessories (wireless
remote controller, adapter PC board, etc.).
(1) Remove the front panel.
(2) Remove the screws (3 places) securing the front grille.
(3) Remove the tabs (3 places) securing the front grille by pushing them in the direction of the arrows.
(4) Making sure not to catch the horizontal flaps, remove the front grille by pulling in the direction of the
arrow.
•Remove the drain plug, the insulation tubing, and the drain hose from the drain pan and replace.
(Refer to Fig. 8)
•Connect the local refrigerant piping ahead of time, matching it to the liquid pipe and gas pipe marks
engraved on the installation panel (1).
Service cover
Axis Axis
Axis
Fig. 5
Handle
Screw
Front panel
(1)
(2) (2)
(3)
Fig. 6
Tab position Tab position
Front grille
Fig. 7
Tab
(3) (3)
(4)
(3)
(2) (2)(2)
Screw position
Drain hose
Finishing Tape
(not included in accessories)
Refrigerant Piping

8
< Replacing the drain hose and drain plug >
(1) Remove the drain plug and insulation tubing.
(2) Remove the drain hose and replace onto the left side.
(3) Replace the drain plug and the insulation tubing onto the right side.
(6) Hook the indoor unit onto the installation panel. (Refer to Fig. 9)
•Placing buffering material between the wall and the indoor unit at this time will make work easier.
For right, bottom-right, and back-right piping
•Pass the drain hose and the refrigerant piping to the wall.
(7) Pass power supply wiring, transmission wiring, earth wiring, and remote controller wiring through
the wiring guide in through the back of the indoor unit and to the front.
Drain plug
Insulating tube
Fig. 8
Do not place lubricant (refrigerant oil) when inserting.
This may cause deterioration and water leaks.
Insert using a hexagon wrench (4mm).
Make sure
there are
no gaps.
Service cover
Refrigerant piping
Be sure to pass all wires through
the wiring guide.
Tab
(There are 2 places.)
Wiring (locally procured)
Power supply wiring, Transmission wiring, Earth wiring,
Remote controller wiring
Wall
Installation panel
(accessory) (1)
Front grille Place buffering material
Fig. 9
Front panel Hook the indoor unit hook onto the installation panel (1).

9
(8) Connect the piping. (See “5.REFRIGERANT PIPING WORK” and Fig. 10)
•
To avoid the influence of noise from the power supply line on the transmission wiring and the remote con-
troller wiring, these wirings must be kept as far as possible from the power/earth wirings. As shown in the
figure, keep the power supply wiring and the earth wiring together. Keep the transmission and remote con-
troller wirings together and route them maintaining a good distance from the power supply/earth wirings
(that is, on the other side of the power supply/earth wirings). Then, fix them securely on the refrigerant pipe.
•Seal the piping through-hole with putty corking material.
(9) Push on both bottom edges of the indoor unit using both hands and hook the tab on the back of
the indoor unit onto the installation panel (1). (Refer to Fig. 9)
•At this time remove the buffering material placed in step (6).
•Make sure power supply wiring, transmission wiring, earth wiring and remote controller wiring are not
caught inside the indoor unit.
When screwing in the indoor unit
•Remove the front grille. (Refer to Fig. 7)
•Secure the indoor unit to the installation panel (1) with the securing
screws (5). (Refer to Fig. 11)
5. REFRIGERANT PIPING WORK
•For the outdoor unit refrigerant piping, refer to the installation manual attached to the outdoor unit.
•Carry out insulation of both gas and liquid refrigerant piping securely. If not insulated, it may cause water
leakage. For gas piping, use insulation material of which heat resistant temperature is not less than 120°C.
For use under high humidity, strengthen the insulation material for refrigerant piping. If not strengthened,
the surface of insulation material may sweat.
•Before installation work, make sure that the refrigerant is R410A. (Unless the refrigerant is R410A, the nor-
mal operation cannot be expected.)
Secure with
vinyl tape.
Wrap the finishing tape overlapping at least half the width with
each wrap.
Wrap the finishing tape all the way to the L-shaped bend.
Seal with putty corking
material.
Drain hose
Wiring
Fig. 10
Refrigerant piping
A
Aarrow view
Power supply wiring and
earth wiring
Refrigerant piping
Transmission wiring and
remote controller wiring
Installation panel
(accessory) (1)
Refrigerant piping
Finishing Tape
(not included in
accessories)
M4 × 12L
(accessory) (5)
Fig. 11

10
CAUTION
This air conditioner is a dedicated model for refrigerant R410A. Make sure to meet the require-
ments shown below and carry out installation work.
• Use dedicated piping cutters and flaring tools for R410A.
• When making a flare connection, coat the flared inner surface only with ether oil or ester oil.
• Use only the flare nuts attached to the air conditioner. If other flare nuts are used, it may cause
refrigerant leakage.
• To prevent contamination or moisture from getting into the piping, take measures such as pinch-
ing or taping the pipings.
Do not mix substance other than the specified refrigerant such as air into the refrigeration circuit.
If the refrigerant leaks during the work, ventilate the room.
•The refrigerant is pre-charged in the outdoor unit.
•When connecting the pipings to the air conditioner, make sure to use
a spanner and a torque wrench as shown in Fig. 12.
•For the dimension of flared part and the tightening torque, refer to the
Table 1.
•When making a flare connection, coat the flared inner surface only
with ether oil or ester oil.
(Refer to Fig. 13)
Then, turn the flare nut 3 to 4 times with your hand and screw in the
nut.
CAUTION
•Over-tightening may cause the flare nuts to crack or the refrigerant
to leak.
NOTE
•Use the flare nut included with the unit main body.
Table 1
•Refer to Table 1 to determine the proper tightening torque.
Pipe size Tightening torque
(N·m)
Dimension for processing flare A
(mm)Flare shape
2.0±9.85.1±7.51)”4/1(4.6
2.0±0.316.3±3.63)”8/3(5.9
2.0±4.614.5±9.45)”2/1(7.21
2.0±5.918.6±6.86)”8/5(9.51
Fig. 13
Coat the flared inner
surface only with ether
oil or ester oil.
Torque wrench
Spanner
Piping union
Flare nut
Fig. 12
R0.4-0.8
A
90
0
±2
0
45
0
±2
0