PART NO. 9374318445-05
INSTALLATION MANUAL
For authorized service personnel only.
INSTALLATIONSANLEITUNG
Nur für autorisiertes Personal.
MANUEL D'INSTALLATION
Pour le personnel agréé uniquement.
MANUAL DE INSTALACIÓN
Solo para personal autorizado.
MANUALE D'INSTALLAZIONE
Ad uso esclusivo del personale autorizzato.
ΕΓΧΕΙΡΙΔΙΟ ΕΓΚΑΤΑΣΤΑΣΗΣ
Για εξουσιοδοτημένο προσωπικό σέρβις.
MANUAL DE INSTALAÇÃO
Apenas para técnicos autorizados.
РУКОВОДСТВО ПО УСТАНОВКЕ
Для уполномоченного персонала.
MONTAJ KILAVUZU
Yetkili servis personeli içindir.
INSTALLATION MANUAL
AIR CONDITIONER
INDOOR UNIT
Floor/Ceiling Type
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1. SAFETY PRECAUTIONS
Be sure to read this• Manual thoroughly before installation.
The warnings and precautions indicated in this Manual contain important information per-•
taining to your safety. Be sure to observe them.
Hand this Manual, together with the Operating Manual, to the customer. Request the cus-•
tomer to keep them on hand for future use, such as for relocating or repairing the unit.
WARNING
This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.
Request your dealer or a professional installer to install the indoor unit in accordance
with this Installation Manual. An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or fi re. If the indoor unit is installed in disregard of
the instructions in the Installation Manual, it will void the manufacturer’s warranty.
Do not turn ON the power until all work has been completed. Turning ON the power
before the work is completed can cause serious accidents such as electric shock or fi re.
If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a fl ame, it produces a toxic gas.
Installation work must be performed in accordance with national wiring standards by
authorized personnel only.
CAUTION
This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or
damage to property.
Read carefully all security information before use or install the air conditioner.
Do not attempt to install the air conditioner or a part of the air conditioner by yourself.
This unit must be installed by qualifi ed personnel with a capacity certifi cate for handling
refrigerant fl uids. Refer to regulation and laws in use on installation place.
The installation must be carried out in compliance with regulations in force in the place
of installation and the installation instructions of the manufacturer.
This unit is part of a set constituting an air conditioner. It must not be installed alone or
with non-authorized by the manufacturer.
Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3mm for this unit.
The unit must be correctly grounded and the supply line must be equipped with a dif-
ferential breaker in order to protect the persons.
The units are not explosion proof and therefore should not be installed in explosive
atmosphere.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they do
not play with the appliance.
Never touch electrical components immediately after the power supply has been turned
off. Electric shock may occur. After turning off the power, always wait 5 minutes before
touching electrical components.
This unit contains no user-serviceable parts. Always consult authorized service personnel to repairs.
When moving, consult authorized service personnel for disconnection and installation
of the unit.
2. ABOUT THE UNIT
2.1. Precautions for using R410A refrigerant
WARNING
Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration cycle will
become abnormally high and cause the piping to rupture.
If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leak occurs during operation, immediately vacate the premises and thoroughly ventilate the area. If the refrigerant comes in contact with a fl ame, it produces a
toxic gas.
2.2. Special tool for R410A
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials that have been manufactured specifi cally for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than the R22, failure to use dedicated piping material or improper installation can cause rupture or injury. Furthermore, it
can cause serious accidents such as water leakage, electric shock, or fi re.
Tool name Changes
Gauge manifold
The pressure in the refrigerant system is extremely
high and cannot be measured with a conventional
gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed. It
is recommended to use a gauge manifold with a high
pressure display range of –0.1 to 5.3 MPa and a low
pressure display range of –0.1 to 3.8 MPa.
Charging hose
To increase pressure resistance, the hose material
and base size were changed.
(The charging port thread diameter for R410A is 1/2
UNF 20 threads per inch.)
Vacuum pump
A conventional vacuum pump can be used by installing a vacuum pump adapter.
Be sure that the pump oil does not back fl ow into
the system. Use one capable for vacuum suction of
–100.7 kPa (5 Torr, –755 mmHg).
Gas leakage detector Special gas leakage detector for R410A refrigerant.
2.3. Accessories
WARNING
For installation purposes, be sure to use the parts supplied by the manufacturer or •
other prescribed parts.
The use of non-prescribed parts can cause serious accidents such as the unit falling, water leakage, electric shock, or fi re.
The following installation parts are furnished. Use them as required.•
Keep the Installation Manual in a safe place and do not discard any other accessories •
until the installation work has been completed.
Contents
1. SAFETY PRECAUTIONS ................................................................................................1
2. ABOUT THE UNIT ...........................................................................................................1
2.1. Precautions for using R410A refrigerant ..................................................................1
2.2. Special tool for R410A ............................................................................................. 1
2.3. Accessories ..............................................................................................................1
2.4. Optional parts ..........................................................................................................2
3. INSTALLATION WORK ...................................................................................................2
3.1. Selecting an installation location ..............................................................................2
3.2. Installation dimension ..............................................................................................2
3.3. Installation the unit ...................................................................................................3
4. PIPE INSTALLATION ......................................................................................................4
4.1. Selecting the pipe material ......................................................................................4
4.2. Pipe requirement .....................................................................................................4
4.3. Flare connection (pipe connection) ..........................................................................4
4.4. Installing heat insulation ..........................................................................................5
5. INSTALLING DRAIN HOSE ............................................................................................5
6. ELECTRICAL WIRING ....................................................................................................6
6.1. Wiring system diagram ............................................................................................7
6.2. Connection cable preparation ..................................................................................7
6.3. Connection of wiring ................................................................................................7
6.4.
Floor/ceiling select switch .......................................................................................................8
7. MOUNT THE COVER PLATE AND THE INTAKE GRILLE .............................................8
8. REMOTE CONTROLLER SETTING ...............................................................................8
8.1. Load batteries (R03/LR03 × 2) ................................................................................8
8.2.
Installing the remote controller holder ............................................................................ 9
9. FUNCTION SETTING .....................................................................................................9
9.1. Operation method .................................................................................................... 9
9.2. Function setting .....................................................................................................10
9.3. Selecting the remote controller signal code ...........................................................10
9.4. Special installation methods ..................................................................................11
10. TEST RUN ...................................................................................................................12
11. CHECK LIST ................................................................................................................13
12. OPTIONAL KIT INSTALLATION (OPTION) .................................................................13
12.1. Wired remote controller (Simple remote controller) ............................................. 13
12.2. External input and external output ....................................................................... 13
13. CUSTOMER GUIDANCE ............................................................................................13
14. ERROR CODES ..........................................................................................................13
INSTALLATION MANUAL
PART NO. 9374318445-05
INDOOR UNIT (Floor/Ceiling Type)
En-2
Name and Shape Q’ty Name and Shape Q’ty
Operating Manual
1
Installation Manual
(This manual)
1
Cover plate (left)
1
Cover plate (right)
1
Screw (M4 × 10 mm)
2
Installation template
Positioning for under ceiling
type
1
Bracket (left)
For suspending the indoor unit
from ceiling
1
Bracket (right)
For suspending the indoor unit
from ceiling
1
Special nut
For suspending the indoor unit
from ceiling
4
Wall bracket
For suspending the
indoor unit on the wall
2
Screw (M4 × 20 mm)
For fi xing the wall bracket
6
Coupler heat insulator (Large)
For indoor side pipe joint (Large
pipe)
1
Coupler heat insulator (Small)
For indoor side pipe
joint (Small pipe)
1
Cable-tie (Large)
For fi xing the drain hose
1
Cable-tie (Small)
For electrical wiring
2
Wire clamper
For electrical wiring
1
Drain hose
1
Hose band
For installing drain
hose
1
Insulation (drain hose)
Adhesive type 100 × 220 (mm)
1
VT wire
For fi xing the drain hose L
280 mm
1
Remote controller
For air conditioner
operation
1
Battery
For remote controller
2
Remote controller
holder
1
Screw (M3 × 12 mm)
For remote controller holder
installation
2
2.4. Optional parts
Parts name Model No. Summary
Wired remote controller UTY-RNN*M
Unit control is performed by
wired remote controller
Simple Remote Controller UTY-RSN*M
For air conditioner operation
External connect kit UTY-XWZX For control input/output port
Wired remote controller is recommended using simultaneous twin or triple connection.
3. INSTALLATION WORK
Especially, the installation place is very important for the split type air conditioner because
it is very diffi cult to move from place to place after the fi rst installation.
3.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
WARNING
Select installation locations that can properly support the weight of the indoor unit.
Install the units securely so that they do not topple or fall.
CAUTION
Do not install the indoor unit in the following areas:
Area with high salt content, such as at the seaside. It will deteriorate metal parts, •
causing the parts to fall or the unit to leak water.
Area fi lled with mineral oil or containing a large amount of splashed oil or steam, •
such as a kitchen. It will deteriorate plastic parts, causing the parts to fall or the unit
to leak water.
Area that generates substances that adversely affect the equipment, such as sulfu-•
ric gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints
to corrode, which can cause refrigerant leakage.
Area that can cause combustible gas to leak, contains suspended carbon fi bers or •
fl ammable dust, or volatile infl ammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a fi re.
Area where animals may urinate on the unit or ammonia may be generated.•
Do not install where there is the danger of combustible gas leakage.
Do not install the unit near a source of heat, steam, or fl ammable gas.
Install the indoor unit, outdoor unit, power supply cable, transmission cable, and
remote controller cable at least 1 m away from a television or radio receivers. The
purpose of this is to prevent TV reception interference or radio noise. (Even if they are
installed more than 1 m apart, you could still receive noise under some signal conditions.)
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
Take precautions to prevent the unit from falling.
Install the indoor unit on a place having a suffi cient strength so that it withstands (1)
against the weight of the indoor unit.
The inlet and outlet ports should not be obstructed; the air should be able to blow all (2)
over the room.
Leave the space required to service the air conditioner.(3)
Install the unit where connection to the outdoor unit is easy. (4)
Install the unit where the connection pipe can be easily installed. (5)
Install the unit where the drain pipe can be easily installed.(6)
Install the unit where noise and vibrations are not amplifi ed.(7)
Take servicing, etc., into consideration and leave the spaces. Also install the unit (8)
where the fi lter can be removed.
Do not install the unit where it will be exposed to direct sunlight.(9)
3.2. Installation dimension
A. Floor type
Left
300 300
Unit : mm
Right
En-3
When installing set to wall install the accessory wall bracket at the position as shown in
the fi gure, and mount the set to it.
Wall bracket
Side of set
Unit : mm
990
500
245
100
100
65
65
50
125
530
45
655
B. Ceiling type
Using the installation template, drill holes for piping and suspension bolts (for holes).
Installation
template
Drilling position for
suspension bolt
Wall
Ceiling
Drilling position for piping
Unit : mm
900
200
B-1. Drilling for piping
Select piping and drain directions.
Top
Right
Hole
VIEW
Rear
(Install the drain hose in this direction.)
For direction
(Rear), bore the oval hole shown in the above fi gure.
CAUTION
Install the drain hose at the rear; it should not be installed on the top or right side.
When the directions are selected, drill 80 mm and 50 mm or 150 mm dia. hole on the wall
so that the hole is tilted downward toward the outdoor for smooth water fl ow.
6
Wall
Indoor side Outdoor side
Unit : mm
B-2. Drilling the holes and attaching the suspension bolts
Drill Φ25 mm holes at the suspension bolt locations, then install the bolts.
Bolt Strength 980 to 1470 N (100 to 150 kgf)
Ceiling panel
20 to 50 mm
Φ25 mm
[If using anchor bolts]
Drill holes for anchor bolts at the locations at which you will set the suspension bolts.
Note that anchor bolts are M10 bolts (to be obtained locally).
Anchor-Bolt Strength 980 to 1470 N (100 to 150 kgf)
Ceiling
20 to
50 mm
M10 Anchor bolt
(Field supply)
B. Ceiling type
Ceiling
Ceiling
Left
150
2300
Floor Unit : mm
20
300
Indoor unit
Right
3.3. Installation the unit
WARNING
Install the air conditioner in a location which can withstand a load of at least fi ve times
the weight of the main unit and which will not amplify sound or vibration. If the installation location is not strong enough, the indoor unit may fall and cause injuries.
3.3.1. Preparing indoor unit installation
Open the intake grille and remove the 3 screws.
Tapping screw
Intake grille
Machine screw
Tapping screw
Remark : The main unit can be wired before the indoor unit is installed.
Select the most appropriate installation order.
3.3.2. Indoor unit installation
A. Floor type
Drilling for piping
Select piping and drain directions.
The piping and drain can be made in three directions as shown below.
Rear
Right
Bottom
(Install the drain hose
in this direction.)
Hole
VIEW
For direction
(Bottom), bore the oval hole shown in the above fi gure.
The drain hose can be connected to either the left or right side.
Drain hose
(Left side)
Drain hose
(Right side)
When the directions are selected, drill a 100 mm dia. hole on the wall so that the hole is
tilted downward toward the outdoor for smooth water fl ow.
When the pipe is led out from the rear, make a hole as shown in the fi gure, at the position
shown.
Wall
100
Indoor side
Outdoor side Unit : mm
6
En-4
Do not use copper pipes that have a collapsed, deformed, or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may
become blocked with contaminants.
Improper pipe selection will degrade performance. As an air conditioner using R410A
incurs pressure higher than when using conventional refrigerant, it is necessary to
choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in the table.•
Never use copper pipes thinner than those indicated in the table even if they are avail-•
able on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [mm (in.)] Thickness [mm]
6.35 (1/4) 0.80
9.52 (3/8) 0.80
12.70 (1/2) 0.80
15.88 (5/8) 1.00
19.05 (3/4) 1.20
4.2. Pipe requirement
CAUTION
Refer to the Installation Manual of the outdoor unit for description of the length and the
diameter of connecting pipe or for difference of its elevation.
Use pipe with water-resistant heat insulation.•
CAUTION
Install heat insulation around both the gas and liquid pipes. Failure to do so may cause
water leaks.
Use heat insulation with heat resistance above 120 °C. (Reverse cycle model only)
In addition, if the humidity level at the installation location of the refrigerant piping is
expected to exceed 70 %, install heat insulation around the refrigerant piping.
If the expected humidity level is 70-80 %, use heat
insulation that is 15 mm or thicker and if the expected humidity exceeds 80 %, use
heat insulation that is 20 mm or thicker. If heat insulation is used that is not as thick as
specifi ed, condensation may form on the surface of the insulation.
In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 20 °C).
4.3. Flare connection (pipe connection)
4.3.1. Flaring
Use special pipe cutter and fl are tool exclusive for R410A.•
Cut the connection pipe to the necessary length with a pipe cutter.(1)
Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.(2)
Insert the fl are nut (always use the fl are nut attached to the indoor and outdoor units (3)
respectively) onto the pipe and perform the fl are processing with a fl are tool.
Leakage of refrigerant may result if other fl are nuts are used.
Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from (4)
entering the pipes.
L
Die
Pipe
Check if [L] is fl ared uniformly
and is not cracked or scratched.
Pipe outside diameter
[mm (in.)]
Dimension A [mm]
Dimension B
-00.4
[mm]
Flare tool for R410A,
clutch type
6.35 (1/4)
0 to 0.5
9.1
9.52 (3/8) 13.2
12.70 (1/2) 16.6
15.88 (5/8) 19.7
19.05 (3/4) 24.0
When using conventional fl are tools to fl are R410A pipes, the dimension A should be ap-
proximately 0.5 mm more than indicated in the table (for fl aring with R410A fl are tools) to
achieve the specifi ed fl aring. Use a thickness gauge to measure the dimension A.
Width across
fl ats
Pipe outside
diameter [mm (in.)]
Width across fl ats of
Flare nut [mm]
6.35 (1/4) 17
9.52 (3/8) 22
12.70 (1/2) 26
15.88 (5/8) 29
19.05 (3/4) 36
B-3. Installing Brackets
Install the bracket with nuts, spring washers.
Ceiling panel
Special nut A
(Accessories)
Bracket
M10 Nut (Field supply)
M10 Nut (Field supply)
Spring washer
(Field supply)
Bracket (Left)
Bracket (Right)
B-4. Installing indoor unit
Reset the hex bolts as shown in the fi gure
Indoor unit
Hex bolt
8 to 13
Unit : mm
Apply the indoor unit to the brackets.
Bolt
Bracket
Indoor unit
Now, securely tighten the hex bolts in both sides.
3.3.3. Barrier and RFM base removal and installation
Remove the barriers by removing the 4 fi xing screws (2 screws each).(1)
Remove the RFM base by removing the 2 fi xing screws and unhooking the 1 hook.(2)
After completing the work, install the barriers and RFM base as they were originally.(3)
Fixing screw
(2 positions)
Barriers
RFM base
Hook
Fixing screw
(2 positions)
Install the barriers in the correct direction.
4. PIPE INSTALLATION
CAUTION
Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant R410A models. Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
While welding the pipes, be sure to blow dry nitrogen gas through them.
4.1. Selecting the pipe material
CAUTION
Do not use existing pipes.
Use pipes that have clean external and internal sides without any contamination which
may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.
It is necessary to use seamless copper pipes.
Material : Phosphor deoxidized seamless copper pipes It is desirable that the amount
of residual oil is less than 40 mg/10 m.
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