Daikin FTX12WMVJU9 User manual

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DAIKIN ROOM AIR CONDITIONER
INSTALLATION MANUAL
R410A Split Series
Installation manual
Manuel dinstallation
Manual de instalación
MODELS
FTX09WMVJU9
FTX12WMVJU9
FTX15WMVJU9
Manuel dinstallation
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1■English
Safety Considerations
Refer also to the General Safety Considerations in the
separate booklet.
Read the precautions in this manual
carefully before operating the unit.
Read these Safety Considerations for Installation carefully
before installing an air conditioner or heat pump. After
completing the installation, make sure that the unit operates
properly during the startup operation.
Instruct the user on how to operate and maintain the unit.
Inform users that they should store this installation manual
with the operation manual for future reference.
Always use a licensed installer or contractor to install this
product.
Improper installation can result in water or refrigerant leakage,
electric shock, re, or explosion.
Meanings of DANGER, WARNING, CAUTION, and NOTE
Symbols:
DANGER ........... Indicates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
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.
NOTE ................ Indicates situations that may result
in equipment or property damage
accidents only.
DANGER
• Refrigerant gas is heavier than air and replaces oxygen.
A massive leak can lead to oxygen depletion, especially
in basements, and an asphyxiation hazard could occur
leading to serious injury or death.
•
Do not ground units to water pipes, gas pipes, telephone
wires, or lightning rods as incomplete grounding can cause
a severe shock hazard resulting in severe injury or death.
Additionally, grounding to gas pipes could cause a gas leak
and potential explosion causing severe injury or death.
• If refrigerant gas leaks during installation, ventilate the
area immediately. Refrigerant gas may produce toxic gas
if it comes into contact with re. Exposure to this gas could
cause severe injury or death.
• After completing the installation work, check that the
refrigerant gas does not leak throughout the system.
• Do not install unit in an area where ammable materials
are present due to risk of explosions that can cause
serious injury or death.
• Safely dispose all packing and transportation materials
in accordance with federal/state/local laws or ordinances.
Packing materials such as nails and other metal or
wood parts, including plastic packing materials used for
transportation may cause injuries or death by suffocation.
WARNING
• Only qualied personnel licensed or certied in their jurisdiction
must carry out the installation work. Installation must be done in
accordance with this installation manual. Improper installation
may result in water leakage, electric shock, or re.
• When installing the unit in a small room, take measures to keep
the refrigerant concentration from exceeding allowable safety
limits. Excessive refrigerant leaks, in the event of an accident in
a closed ambient space, can lead to oxygen deciency.
• Use only specied accessories and parts for installation
work. Failure to use specied parts may result in water
leakage, electric shock, re, or the unit falling.
• Install the air conditioner or heat pump on a foundation
strong enough that it can withstand the weight of the unit.
A foundation of insufcient strength may result in the unit
falling and causing injuries.
• Take into account strong winds, typhoons, or earthquakes
when installing. Improper installation may result in the unit
falling and causing accidents.
• Make sure that a separate power supply circuit is provided
for this unit and that all electrical work is carried out by
qualied personnel licensed or certied in their jurisdiction
according to local, state, and national regulations. An
insufcient power supply capacity or improper electrical
construction may lead to electric shock or re.
•
Make sure that all wiring is secured, that specied wires are
used, and that no external forces act on the terminal connections
or wires. Improper connections or installation may result in re.
Contents
Safety Considerations .................................... 1
Accessories ..................................................... 3
Choosing an Installation Site ........................ 3
1. Indoor unit ................................................................... 3
2. Wireless remote controller........................................... 3
Indoor Unit Installation Diagram ................... 4
Indoor Unit Installation ................................... 5
1. Installing the mounting plate........................................ 5
2.
Drilling a wall hole and installing wall embedded pipe ... 6
3. Installing the indoor unit .............................................. 6
4. Wiring .......................................................................... 8
5. Drain piping ................................................................. 8
Refrigerant Piping Work ................................. 9
1. Flaring the pipe end..................................................... 9
2. Refrigerant piping ........................................................ 9
Installation Tips ............................................... 10
1. Removing and installing the front panel ...................... 10
2. Removing and installing the front grille........................ 11
3. How to set the different addresses .............................. 11
Trial Operation and Testing ............................ 12
1. Trial operation and testing ........................................... 12
2. Test items .................................................................... 12
The pictures in this document are for illustrative purposes only.
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• When wiring, position the wires so that the electrical
wiring box cover can be securely fastened. Improper
positioning of the electrical wiring box cover may result in
electric shock, re, or the terminals overheating.
• Before touching electrical parts, turn off the unit.
•
The circuit must be protected with safety devices in
accordance with local and national codes, i.e. a circuit breaker.
• Securely fasten the outdoor unit terminal cover (panel). If the
terminal cover/panel is not installed properly, dust or water
may enter the outdoor unit causing re or electric shock.
• When installing or relocating the system, keep the
refrigerant circuit free from substances other than the
specied refrigerant (R410A) such as air. Any presence of
air or other foreign substance in the refrigerant circuit can
cause an abnormal pressure rise or rupture, resulting in
equipment damage and even injury.
• Do not change the setting of the protection devices. If the
pressure switch, thermal switch, or other protection device
is shorted and operated forcibly, or parts other than those
specied by Daikin are used, re or explosion may occur.
• Do not use means to accelerate the defrosting process (if
possible) or to clean, other than those recommended by
the manufacturer.
• The appliance must be stored in a room without
continuously operating ignition sources (for example:
open ames, an operating gas appliance or an operating
electric heater).
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odor.
• Comply with national gas regulations.
CAUTION
• Do not touch the switch with wet ngers. Touching a switch
with wet ngers can cause electric shock.
• Do not allow children to play on or around the unit to
prevent injury.
• Wear adequate personal protective equipment (protective
gloves, safety glasses,…) when installing, maintaining or
servicing the system.
• The heat exchanger ns are sharp enough to cut. To avoid
injury, wear gloves or cover the ns while working around
them.
• Do not touch the refrigerant pipes during and immediately
after operation as the refrigerant pipes may be hot or
cold, depending on the condition of the refrigerant owing
through the refrigerant piping, compressor, and other
refrigerant cycle parts. Your hands may suffer burns or
frostbite if you touch the refrigerant pipes. To avoid injury,
give the pipes time to return to normal temperature or, if
you must touch them, be sure to wear proper gloves.
•
Install drain piping to ensure proper drainage. Improper drain
piping may result in water leakage and property damage.
• Insulate piping to prevent condensation.
• Be careful when transporting the product.
• Do not turn off the power immediately after stopping
operation. Always wait for at least 5 minutes before turning
off the power. Otherwise, water leakage may occur.
• Do not use a charging cylinder. Using a charging cylinder
may cause the refrigerant to deteriorate.
• Refrigerant R410A in the system must be kept clean, dry,
and tight.
(a) Clean and Dry -- Foreign materials (including mineral
oils such as SUNISO oil or moisture) should be
prevented from getting into the system.
(b)
Tight -- R410A does not contain any chlorine, does not
destroy the ozone layer, and does not reduce the earth’s
protection again harmful ultraviolet radiation. R410A
can contribute to the greenhouse effect if it is released.
Therefore take proper measures to check for the tightness
of the refrigerant piping installation. Read the chapter
Refrigerant Piping Work and follow the procedures.
• Since R410A is a blend, the required additional refrigerant
must be charged in its liquid state. If the refrigerant is
charged in a state of gas, its composition can change and
the system will not work properly.
• The indoor unit is for R410A. See the catalog for outdoor
models that can be connected. Normal operation is not
possible when connected to non-compatible outdoor units.
•
Remote controller (wireless kit) transmitting distance can be
shorter than expected in rooms with electronic uorescent
lamps (inverter or rapid start types). Install the indoor unit
far away from uorescent lamps as much as possible.
• Indoor units are for indoor installation only. Outdoor units
can be installed either outdoors or indoors.
• Do not install the air conditioner or heat pump in the
following locations:
(a) Where a mineral oil mist or oil spray or vapor is
produced, for example, in a kitchen.
Plastic parts may deteriorate and fall off or result in
water leakage.
(b) Where corrosive gas, such as sulfurous acid gas, is
produced.
Corroding copper pipes or soldered parts may result in
refrigerant leakage.
(c) Near machinery emitting electromagnetic waves.
Electromagnetic waves may disturb the operation of
the control system and cause the unit to malfunction.
(d) Where ammable gas may leak, where there is carbon
ber, or ignitable dust suspension in the air, or where
volatile ammables such as thinner or gasoline are
handled. Operating the unit in such conditions can
cause a re.
• Take adequate measures to prevent the outdoor unit
from being used as a shelter by small animals. Small
animals making contact with electrical parts can cause
malfunctions, smoke, or re. Instruct the user to keep the
area around the unit clean.
• Servicing shall be performed only as recommended by the
manufacturer and licensed or certied in their jurisdiction.
NOTE
• The indoor unit should be positioned where the unit and inter-
unit wires (outdoor to indoor) are at least 3.3ft (1m) away from
any televisions or radios. (The unit may cause interference with
the picture or sound.) Depending on the radio waves, a distance
of 3.3ft (1m) may not be sufcient to eliminate the noise.
• Dismantling the unit, treatment of the refrigerant, oil and
additional parts must be done in accordance with the
relevant local, state, and national regulations.
• Only use tools for R410A, such as a gauge manifold,
charge hose, gas leak detector, reverse ow check valve,
refrigerant charge base, vacuum gauge, or refrigerant
recovery equipment.
• If the conventional refrigerant and refrigerator oil are
mixed in R410A, the refrigerant may deteriorate.
• This air conditioner or heat pump is an appliance that
should not be accessible to the general public.
• As maximum allowable pressure is 604psi (4.17MPa), the
wall thickness of eld-installed pipes should be selected
in accordance with the relevant local, state, and national
regulations.
FTN005-U
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Accessories
AMounting plate
1
BMounting plate
xing screw
M4 × 1”
(M4 × 25mm) 7
C
Titanium apatite deodorizing lter
09/12 class 15 class
2
DWireless remote
controller
1
ERemote controller
holder
1
FRemote controller
holder
xing screw
M3 × 13/16”
(M3 × 20mm)
2
GDry battery AAA.
LR03 (alkaline) 2
H Indoor unit xing
screw
M4 × 1/2”
(M4 × 12mm)
2
JInsulation tape
1
KOperation manual
1
LInstallation manual
1
MWarranty
1
NGeneral safety
considerations
1
Choosing an Installation Site
• Before choosing the installation site, obtain user approval.
1. Indoor unit
• The indoor unit should be positioned in a place where:
1) the restrictions on the installation requirements specied in “Indoor Unit Installation Diagram” on page 4 are met,
2) both the air inlet and air outlet are unobstructed,
3) the unit is not exposed to direct sunlight,
4) Install so that drainage occurs easily,
5) the unit is away from sources of heat or steam,
6) there is no source of machine oil vapour (this may shorten the indoor unit service life),
7) cool/warm air is circulated throughout the room,
8) the unit is away from electronic ignition type uorescent lamps (inverter or rapid start type) as they may affect the
remote controller range,
9) the unit is at least 3.3ft (1m) away from any television or radio set (the unit may cause interference with the picture or
sound),
10) no laundry equipment is nearby.
2. Wireless remote controller
• Turn on all the uorescent lamps in the room, if any, and nd a location where the remote controller signals are properly
received by the indoor unit (within 23ft (7m)).
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Indoor Unit Installation Diagram
09/12 class
15 class
Screws
M4 × 5/8” (M4 × 16mm)*
Service lid
Opening method
1) Remove the service lid screw.
2) Pull out the service lid horizontally in
the direction of the arrow.
3) Pull down.
Wrap the insulation pipe with
the finishing tape from bottom
to top.
Wrap with the finishing tape
so that no gap is left.
Do not connect commercially
available drain hose directly
to the indoor unit. (Water
leakage may result)
Mounting
plate
Hook
Mark (rear side)
Bottom frame
Front grille
How to attach the indoor unit
Hook the hooks of the bottom frame
to the mounting plate.
If the hooks are difficult to hook,
remove the front grille.
How to remove the indoor unit
Push up the marked area (at the
lower part of the front grille) to
release the hooks. If it is difficult to
release, remove the front grille.
1-3/16” (30mm) or more from ceiling
Front panel
1-15/16” (50mm) or more
from walls
(on both sides)
Air filters
A
A
*The 15 class model has 3 screws.
Titanium apatite deodorizing filter (2)
C
The service lid is removable.
Filter frame
Claw
Air filter
Titanium apatite
deodorizing filter
Ta b
Mounting plate
fixing screw
M4 × 1” (M4 × 25mm)
B
Appearance of
indoor units may
differ from some
models.
(This is a 09/12
class illustration)
Caulk pipe hole gap
with putty.
Cut thermal insulation pipe to
an appropriate length and
wrap it with tape, making
sure that no gap is left in the
insulation pipe’s cut line.
A Mounting plate
Titanium apatite deodorizing filter
Remote
controller holder
E
Remote controller
holder fixing screw
M3 × 13/16” (M3 × 20mm)
F
Wireless remote
controller
D
The mounting plate
should be installed on a
wall which can support the
weight of the indoor unit.
A
Before screwing the
remote controller
holder to the wall, make
sure that control signals
are properly received by
indoor unit.
E
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Indoor Unit Installation
1. Installing the mounting plate
• The mounting plate should be installed on a wall which can support the weight of the indoor unit.
1) Temporarily secure the mounting plate to the wall, make sure that the panel is completely level, and mark the drilling
points on the wall.
2) Secure the mounting plate to the wall with screws.
Recommended mounting plate retention spots and dimensions
30-5/16 (770)
Place the pipe port cover
in this pocket.
Gas pipe end
Through-the-wall
hole φ2-9/16 (65)
Recommended mounting plate
retention spots (7 spots in all) Place a leveler
on these tabs.
1-3/4 (44.5)
1-3/4 (44.5)
1-7/8 (48)
11-1/4 (286)
11-1/4 (285)
6-11/16 (170)
1-7/8 (48)
1-15/16
(50*)
6-11/16
(170)
4-5/8 (116.5) 4-5/8 (117)
13-1/4 (337)
Drain hose position
Liquid pipe end
39 (990)
unit: inch (mm)
Gas pipe end
Through-the-wall
hole φ3-1/8 (80)
1-3/4 (44.5)
1-3/4 (44.5)
2-3/8 (60)
16-7/16 (417) 17-1/8 (435)
11-5/8 (295)
6-11/16 (170)
1-7/8 (48) 2-3/8 (60*)
6-11/16 (170)
5 (126.5)
4-5/8 (117)
Drain hose position
Liquid pipe end
Use a tape measure
as shown.
Position the end of
the tape measure at .
Place a leveler
on these tabs.
Recommended mounting plate
retention spots (7 spots in all)
The removed pipe
port cover can be
kept in the mounting
plate pocket.
Mounting
plate
Removed pipe
port cover A
* Depending on the model, the actual distance between the liquid pipe end and gas pipe end may differ from the distance between those symbols on the
mounting plate (the distance listed in this manual).
Always measure the actual distance between the liquid pipe end and gas pipe end before installing refrigerant pipes.
09/12 class
15 class
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2. Drilling a wall hole and installing wall embedded pipe
WARNING
For metal frame or metal board walls, be sure to use a wall embedded pipe and wall hole cover in the feed-through hole to
prevent possible heat, electric shock, or re.
• Be sure to caulk the gaps around the pipes with caulking material to
prevent condensation.
1) Drill a feed-through hole with a φ2-9/16 inch (65mm) (for 09/12 class),
φ3-1/8 inch (80mm) (for 15 class) diameter through the wall at a
downward angle toward the outside.
2) Insert a wall embedded pipe into the hole.
3) Insert a wall hole cover into wall pipe.
4) After completing refrigerant piping, wiring, and drain piping, caulk the
pipe hole gap with putty.
Inside Outside
Even if a wall hole cover is
not used, caulk both the
outdoor and indoor sides
with putty.
φ2-9/16”
(65mm)
φ3-1/8”
(80mm)
09/12 class
15 class
Caulking
(field supply)
Wall embedded pipe
(field supply)
Wall hole cover
(field supply)
3. Installing the indoor unit
In the case of bending or curing refrigerant pipes, keep the following precautions in mind.
Abnormal sound may be generated if improper work is conducted.
• Do not strongly press the refrigerant pipes onto the bottom frame.
• Do not strongly press the refrigerant pipes on the front grille, either.
3-1. Right-side, right-back, or right-bottom piping
1) Attach the drain hose to the underside of the refrigerant pipes with
adhesive vinyl tape.
2) Wrap the refrigerant pipes and drain hose together with Jinsulation
tape. Right-bottom
piping
Right-side piping
Right-back piping
Bind refrigerant
pipe and drain
hose together with
insulation tape.
Remove pipe port
cover here for
right-side piping.
Remove pipe port cover
here for right-bottom piping.
J
3) Pass the drain hose and refrigerant pipes through the wall hole, then
position the indoor unit on the Amounting plate hooks by using the
markings at the top of the indoor unit as a guide.
Mounting plate
A
4) Open the front panel (Refer to “Installation Tips”on page 10), then open
the service lid (Refer to “Indoor Unit Installation Diagram”on page 4).
5) Pass the inter-unit wire from the outdoor unit through the feed-through
wall hole and pass to the front of indoor unit from the back. Then pull
them at front side. Bend the ends of cable tie wires upward for easier
work in advance. (If the interunit wire ends are to be stripped rst, bundle
wire ends with adhesive tape.)
6) Press the bottom frame of the indoor unit with both hands until it is rmly
caught by the Amounting plate hooks. Make sure the wire leads do not
catch on the edge of the indoor unit.
A
Wire guide
Hang indoor unit on the hooks of
mounting plate.
Inter-unit
wire
Mounting
plate
English
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Indoor Unit Installation
3-2. Left-side, left-back, or left-bottom piping
1) Switch around the drain plug and drain hose.
3) Switch around the drain hose and drain plug.1) Remove the fixing screw and
pull out the drain hose.
How to switch around the drain plug and drain hose
Push the drain plug all the
way in using a hexagonal
wrench (3/16 inch (4mm)).
Hexagonal wrench
(3/16 inch (4mm))
Drain plug
No gap
Do not apply lubricating oil
(refrigerant oil) to the drain
plug when inserting it.
The application of lubrication
oil to the drain plug will
deteriorate the plug to cause
drain leakage from the plug.
Insert drain hose securely
and fix in place with fixing
screw.
Drain hose
Fixing screw
Insert a hexagonal
wrench (3/16 inch (4mm)).
2) Pull out
drain plug.
Drain hose
Pull out
drain hose.
2
1
Remove fixing
screw.
2) Attach the drain hose to the underside of the refrigerant
pipes with adhesive vinyl tape.
Remove pipe port cover here for
left-bottom piping.
Remove pipe port
cover here for
left-side piping.
Left-bottom piping
Left-side piping
Left-back piping
3) Shape the refrigerant pipes along
the pipe path marking on the A
mounting plate.
4) Pass the drain hose and
refrigerant pipes through the wall
hole, then position the indoor unit
on the Amounting plate hooks,
using the markings at the top
of the indoor unit as a guide.
Mounting plate
A
Drain
hose
Caulk this
hole with
putty or
caulking
material.
Mounting plate
A
Wrap insulation tape from the right end
all the way to the left end of the pipe that
passes through the back of the indoor unit.
Overlap at least half the width of the tape
with each turn.
J
Bind with adhesive vinyl tape.
If any gap is left or if the
refrigerant pipe is bound too
tightly, condensation and
dripping may result.
5) Open the front panel (Refer to “Installation Tips”on page 10),
then open the service lid (Refer to “Indoor Unit Installation
Diagram”on page 4).
6) Pass the inter-unit wire from the outdoor unit through the feed-
through wall hole and pass to the front of indoor unit from the
back. Then pull them at front side. Bend the ends of cable tie
wires upward for easier work in advance. (If the interunit wire
ends are to be stripped rst, bundle wire ends with adhesive
tape.)
7) Connect the refrigerant pipes.
8) In case of pulling the drain hose through the back of the indoor
unit, wrap the refrigerant pipes and drain hose together with J
insulation tape as shown in the right gure.
9) Press the bottom frame of the indoor unit with both hands until
it is rmly caught by the Amounting plate hooks. Make sure
that the wires do not catch on the edge of the indoor unit.
A
Wire guide
Hang indoor unit on the hooks of
mounting plate.
Inter-unit
wire
Mounting
plate
Refrigerant pipes
Drain hose
(Be sure the drain
hose is lower)
Bottom frame
Mounting
plate
A
Secure the indoor unit to the
mounting plate with the
indoor unit fixing screws
M4 × 1/2” (M4 × 12mm)(2 points).
A
H
Insulation tape
J
Wrap with vinyl tape so that no gap is left and the slit in the
thermal insulation pipe is facing upward.
Thermal insulation pipe
Slit
Slit
Vinyl tape
3-3. Wall embedded piping
Follow the instructions given under left-side, left-back, or
left-bottom piping.
1) Insert the drain hose to a depth of 1-15/16 inches
(50mm) or more so it will not be pulled out of the drain
pipe.
Inner wall
Vinyl chloride
drain pipe
(VP-30)
Drain hose1-15/16”
(50mm)
or more
Insert the drain hose
to this depth so it will
not be pulled out of
the drain pipe.
Outer wall
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4. Wiring
Refer to the installation manual for the outdoor unit also.
WARNING
• Do not use tapped wires, extension cords, or starburst connections, as they may cause overheating, electric shock, or re.
• Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the
terminal block.) Doing so may cause electric shock or re.
• Do not connect the power wire to the indoor unit. Doing so may cause electric shock or re.
CAUTION
Recommend stranded cable for interunit wiring. Local code always supersedes recommendation.
• For stranded wires, make sure to use the round crimp-style terminal for connection to the power supply terminal block.
Place the round crimp-style terminals on the wires up to the covered part and secure in place.
Round
crimp-style
terminal
Stranded wire
Screw
Flat washer Screw Screw
Flat washer
Flat washer
Good Wrong
A
Round
crimp-style
terminal
Round crimp-style
terminal
Round
crimp-style
terminal
Arrow view A
• If solid core wire must be used, be sure to curl the end of the lead.
Improper work may cause heat and re.
Good Wrong
1) Remove the front grille. (Refer to “2. Removing and installing
the front grille” on page 11.)
2) Remove the conduit mounting plate and then secure the
conduit to the conduit mounting plate with the lock nut, as
shown in the illustration.
3) Strip wire ends (3/4 inch (20mm)).
4) Match wire colors with terminal numbers on the indoor and
outdoor unit’s terminal blocks and rmly secure the wires in
the corresponding terminals with the screws.
5) Connect the ground wires to the corresponding terminals.
6) Pull the wires lightly to make sure they are securely connected.
7) Attach the conduit mounting plate.
8) Shape the wires so that the service lid ts securely.
9) Attach the front grille. (Refer to “2. Removing and installing
the front grille” on page 11.)
10) Take care to ensure that all wiring between the indoor unit and
the outdoor unit has a consistent connection. Any splices can
cause communication errors.
Back
Wire retainer
Terminal block
Electrical wiring box
Shape wires so that the service
lid fits securely.
Use the specified wire type.
(Illustration may differ from some models)
Conduit
mounting plate
Lock nut
Conduit
Claw
Seat the claw
onto this part and
secure
Strip wire ends
(3/4 inch
(20mm)).
3/4 inch
(20mm)
1
2
3
1 2 3 L1L 2
Firmly fix the wires with the terminal screws.
Outdoor
unit
Indoor
unit
Using AWG14, stranded and insulated wire
for connections between indoor and
outdoor units is recommended. Local codes
always supersede recommendations.
Firmly fix the wires with
the terminal screws.
5. Drain piping Make a downward slope
Getting higher
Wrong Wrong
Containing waves
Wrong
With the end of the hose
in the drain outlet
Leave a gap of 1-15/16 inches (50mm) or
more at the end of the outlet
1) Connect the drain hose, as described on the right.
• Avoid placing the end of the drain hose in a drainage location
that could cause bad odors or corrosive gas to ow backward
into the outlet.
• The drainage water may change color due to bacteria or other
organisms. Place in a location where the ow of drainage water
will not cause a problem.
• Minimize the number of bends in the drain hose as much as
possible.
If bending the drain hose, bend it gently.
2) Remove the air lters and transfer some water to the indoor heat
exchanger by pouring water into the drain pan.
3) Make sure that water ows out of the drain hose.
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9■English
Indoor Unit Installation
4) If drain hose extension or embedded drain piping is required, use
appropriate parts that match the hose front end.
• When drain hose requires extension, obtain an extension hose
with an inner diameter of 5/8 inch (16mm).
Be sure to thermally insulate the indoor section of the extension
hose.
φ5/8” (φ16mm)
Drain hose supplied
with the indoor unit
Indoor unit
drain hose
Extension drain hose
Heat insulation tube (field supply)
Refrigerant Piping Work
WARNING
• Do not apply mineral oil to the are.
• Prevent mineral oil from getting into the system as this would reduce the service life of the units.
• Never use piping which has been used for previous installations. Only use parts which are delivered with this unit.
• Never install a dryer to this R410A unit in order to guarantee its service life.
• The drying material may dissolve and damage the system.
• Improper aring may result in refrigerant gas leakage.
1. Flaring the pipe end
1) Cut the pipe end with a pipe cutter.
2) Remove burrs with the cut surface facing downward,
so that the lings do not enter the pipe.
Remove burrs.
Cut exactly at
right angles.
3) Put the are nut on the pipe.
4) Flare the pipe.
5) Check that the aring has been done correctly.
Set exactly at the position shown below.
Flaring
A
A0-0.020 inch
(0-0.5mm)
Clutch-type
Flare tool for R410A
0.039-0.059 inch
(1.0-1.5mm)
Clutch-type (Rigid-type)
0.059-0.079 inch
(1.5-2.0mm)
Wing-nut type (Imperial-type)
Conventional flare tool
Check
The flare's inner
surface must be
flaw-free.
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
Die
2. Refrigerant piping
CAUTION
• Use the are nut xed to the main unit. (This is to prevent the are nut from cracking as a result of deterioration over time.)
• To prevent gas leakage, apply refrigeration oil only to the inner surface of the are. (Use refrigeration oil for R410A.)
• Use a torque wrench when tightening the are nuts to prevent damage to the are nuts and gas leakage.
• Align the centers of both ares and tighten the are nuts 3 or 4 turns by hand, then tighten them fully with a spanner and a
torque wrench.
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration
oil only to the inner
surface of the flare.
Do not apply refrigeration oil to
the flare nut to avoid tightening
with excessive torque.
Apply oil
Torque wrench
Piping union
Flare nut
Spanner
Tighten
Gas side
Piping size
O.D. 3/8 inch
(9.5mm)
O.D. 1/2 inch
(12.7mm)
O.D. 5/8 inch
(15.9mm)
O.D. 1/4 inch
(6.4mm)
24-1/8 – 29-1/2Ibf • ft
(32.7-39.9N • m)
36-1/2–44-1/2lbf • ft
(49.5-60.3N • m)
45-5/8–55-5/8Ibf • ft
(61.8-75.4N • m)
10-1/2–12-3/4lbf • ft
(14.2-17.2 N • m)
Flare nut tightening torque
Liquid side
Caution on piping handling
• Protect the open end of the pipe against dust and moisture.
• All pipe bends should be as gentle as possible. Use a pipe bender for bending.
Wall
If no flare cap is
available, cover
the flare mouth
with tape to keep
dirt and water out.
Be sure to
place a cap.
Rain
01_EN_3P686875-1.indd 9 2022/04/28 11:02:37

10■English
Selection of copper and heat insulation materials
When using commercial copper pipes and ttings, observe the following:
• Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.024 to 0.030Btu/fth°F (0.035 to
0.045kcal/mh°C))
Be sure to use insulation that is designed for use with HVAC Systems.
• ACR Copper only.
Gas pipe
Liquid pipe
Gas pipe
insulation
Liquid pipe
insulation
Finishing tape Drain hose
• Be sure to insulate both the gas and liquid piping and observe the insulation
dimensions as below.
Gas side
Piping size
O.D. 3/8 inch
(9.5mm)
O.D. 1/2 inch
(12.7mm)
O.D. 5/8 inch
(15.9mm)
O.D. 1/4 inch
(6.4mm)
1-3/16 inch (30mm)
or more
1-9/16 inch (40mm)
or more
1-15/16 inch (50mm)
or more
1-3/16 inch (30mm)
or more
0.031 inch (0.8mm)
(C1220T-O)
0.039 inch (1.0mm)
(C1220T-O)
0.031 inch (0.8mm)
(C1220T-O)
I.D. 15/32-19/32 inch
(12-15mm)
I.D. 9/16-5/8 inch
(14-16mm)
I.D. 5/8-13/16 inch
(16-20mm)
I.D. 5/16-13/32 inch
(8-10mm)
13/32 inch
(10mm) Min.
Minimum bend radius Piping thickness Thermal insulation size Thermal insulation
thickness
Liquid side
• Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
• Using nishing tape, bundle and wrap the indoor unit piping and drain hose together so that the drain hose is below the other
piping.
Installation Tips
1. Removing and installing the front panel
• Removal method
1) Place your ngers in the indentations on the main unit (one each on
the left and right sides), and open the front panel until it stops.
Indentations on
the main unit
2) While pushing the left side front panel shaft outward, push up the
front panel and remove it. (Remove the right side front panel shaft in
the same manner.)
3) After removing both front panel shafts, pull the front panel toward
yourself and remove it.
Front panel shaft
• Installation method
Align the front panel shaft of the front panel with the grooves of grille,
and push all the way in, then close slowly.
Push the center of the lower panel surface rmly to engage the tabs.
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01_EN_3P686875-1.indd 10 2022/04/28 11:02:37

11 ■English
Installation Tips
2. Removing and installing the front grille
• Removal method
1) Remove the front panel and air lters.
2) Remove the 2 screws from the front grille.
(The 15 class model has 3 screws.)
Screws
M4 × 5/8” (M4 × 16mm)
3) In front of the mark on the front grille, there are 3 upper
hooks. Lightly pull the front grille toward you with one hand, and
push down on the hooks with the ngers of your other hand.
 mark area
(3 locations)
Upper hook
Push
down.
Upper hook
When there is insufcient work space because the unit is close to ceiling
CAUTION
Be sure to wear protection gloves.
Place both hands under the center of the front grille, and while pushing
up, pull it toward you.
1) Push up.
2) Pull toward you.
• Installation method
1) Install the front grille and rmly engage the upper hooks (3 locations).
2) Install 2 screws of the front grille.
(The 15 class model has 3 screws.)
3) Install the air lters and then mount the front panel.
3. How to set the different addresses
When 2 indoor units are installed in one room, the 2 wireless remote
controllers can be set for different addresses. Change the address setting
of one of the 2 units. When cutting the jumper, be careful not to damage
any of the surrounding parts.
1) Remove the battery cover on the remote controller and cut the address
jumper.
2) Press , and at the same time.
3) Press , then select , press .
(The indoor unit OPERATION lamp will blink for about 1 minute.)
4) Press the indoor unit ON/OFF switch while the OPERATION lamp is
blinking.
Jumper
Remove the batteries before
cutting the jumper.
Address
1
EXIST
Jumper
2
CUT
• If setting could not be carried out completely while the OPERATION
lamp was blinking, carry out the setting process once again from the
beginning.
• After setting is complete, pressing for about 5 seconds will cause
the remote controller to return to the previous display.
ON/OFF
Indoor unit
ON/OFF
switch
OPERATION
lamp
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12■English
Trial Operation and Testing
1. Trial operation and testing
• Trial operation should be carried out in either COOL or HEAT operation.
1-1. Measure the supply voltage and make sure that it is within the specied range.
1-2. In COOL operation, select the lowest programmable temperature;
in HEAT operation, select the highest programmable temperature.
1-3. Carry out the trial operation following the instructions in the operation manual to
ensure that all functions and parts, such as the movement of the ap, are working
properly.
• To protect the air conditioner, restart operation is disabled for 3 minutes after the system has been turned off.
1-4. After trial operation is complete, set the temperature to a normal level (78°F to 82°F
(26°C to 28°C) in COOL operation, 68°F to 75°F (20°C to 24°C) in HEAT operation).
• When operating the air conditioner in COOL operation in winter,
or HEAT operation in summer, set it to the trial operation mode using
the following method.
1) Press , and at the same time.
2) Press , then select , press .
3) Press or to turn on the system.
• Trial operation will stop automatically after about 30 minutes.
To stop the operation, press .
• Some of the functions cannot be used in the trial operation mode.
• The air conditioner draws a small amount of power in its standby mode. If the system is not to be used for some time
after installation, shut off the circuit breaker to eliminate unnecessary power consumption.
• If the circuit breaker trips to shut off the power to the air conditioner, the system will restore the original operation mode
when the circuit breaker is turned on again.
2. Test items
Test items Symptom Check
Indoor and outdoor units are installed securely. Fall, vibration, noise
No refrigerant gas leaks. Incomplete cooling/heating
function
Refrigerant gas and liquid pipes and indoor drain hose extension are
thermally insulated. Water leakage
Draining line is properly installed. Water leakage
System is properly grounded. Electrical leakage
Only specied wires are used for all wiring, and all wires are connected
correctly. No operation or burn damage
Indoor or outdoor unit’s air inlet or air outlet are unobstructed. Incomplete cooling/heating
function
Stop valves are opened. Incomplete cooling/heating
function
Indoor unit properly receives remote control commands. No operation
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01_EN_3P686875-1.indd 12 2022/04/28 11:02:39

The two-dimensional bar code
is a manufacturing code.
3P686875-1
M21B544 (2206) HT
00_CV_3P686875-1.indd 2 2022/06/06 14:12:57