Fujitsu Slim Duct Type, AR9, AR12, AR18, AR24 Installation Manual
AIR CONDITIONER
INDOOR UNIT
Slim Duct Type
INSTALLATION MANUAL
For authorized service personnel only.
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Contents
1. SAFETY PRECAUTIONS .............................................2
1.1. IMPORTANT! Please Read Before Starting ........... 2
1.2. Special precautions ................................................ 2
2. ABOUT THE UNIT ........................................................ 3
2.1. Precautions for using R410A refrigerant ................ 3
2.2. Special tools for R410A ..........................................3
2.3. For authorized service personnel only. .................. 3
2.4. Accessories ............................................................ 4
2.5. Optional parts ......................................................... 5
3. GENERAL ..................................................................... 5
3.1. Type of copper pipe and insulation material ........... 5
3.2. Additional materials required for installation.......... 5
3.3. Operating range ..................................................... 5
4. ELECTRICAL REQUIREMENT ..................................... 6
5. SELECTING THE MOUNTING POSITION ................... 6
6. INSTALLATION WORK ................................................. 7
6.1A. Installation dimensions
(Ceiling concealed type) ...................................... 7
6.1B. Installation dimensions (Wall mounted type/
Floor standing concealed type) ........................... 7
6.2A. Installation the unit (Ceiling concealed type) ....... 7
6.2B. Install the unit (Wall mounted type/
Floor standing concealed type) ......................... 10
7.
PIPE INSTALLATION .................................................. 12
7.1. Selecting the pipe material ................................... 12
7.2. Pipe requirement .................................................. 12
7.3. Flare connection (Pipe connection)...................... 12
7.4. Installing heat insulation ....................................... 13
8. INSTALLING DRAIN PIPES ........................................ 14
8.1A. Installing drain pipes
(Ceiling concealed type) .................................... 14
8.1B. Installing drain pipes (Wall mounted type/
Floor standing concealed type) ......................... 14
8.2. Install the drain pipe ............................................. 15
9. ELECTRICAL WIRING ................................................ 16
9.1. INDOOR UNIT SIDE ............................................ 17
10. REMOTE CONTROLLER SETTING ........................... 18
10.1. Installing the remote controller ........................... 18
10.2. Setting the dip switches ..................................... 19
10.3. Function setting .................................................. 19
10.4. Jumper wire setting ............................................ 22
10.5. Test run .............................................................. 22
11. SPECIAL INSTALLATION METHODS ......................... 23
12. OPTIONAL PARTS ..................................................... 23
12.1. External input and external output ..................... 23
12.2. Remote sensor (Optional parts) ......................... 24
12.3. IR Receiver Unit (Optional parts) ....................... 24
13. ERROR CODES ......................................................... 25
14. CUSTOMER GUIDANCE ............................................ 26
PART NO. 9374342105-05
1. SAFETY PRECAUTIONS
1
1.1.
IMPORTANT! Please Read Before Starting
This air conditioning system meets strict safety and operating
standards. As the installer or service person, it is an important
part of your job to install or service the system so it operates
safely and efficiently.
For safe installation and trouble-free operation, you
must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all danger, warning, and caution notices given in this manual.
This symbol refers to a hazard or unsafe prac-
WARNING:
CAUTION:
• Hazel alerting symbols
tice which can result in severe personal injury
or death.
This symbol refers to a hazard or unsafe practice which can result in personal injury and the
potential for product or property damage.
Electrical
Safety / alert
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when
lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s
weight. It may be necessary to construct a strong wood or
metal frame to provide added support.
...In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to walls
and floors.
...In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal
frame.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than
drifting snow.
When Connecting Refrigerant Tubing
If Necessary, Get Help
These instructions are all you need for most installation sites
and maintenance conditions. If you require help for a special
problem, contact our sales/service outlet or your certified
dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper
installation or maintenance service, including failure to follow
the instructions in this document.
1.2.Special precautions
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED,
EXPERIENCED ELECTRICIAN SHOULD ATTEMPT
TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing
are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate
grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the
flare and union tubes before connecting them, then tighten
the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
When Servicing
•
Turn the power OFF at the main circuit breaker panel before
opening the unit to check or repair electrical parts and wiring.
•
Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check
that no metal scraps or bits of wiring have been left inside
the unit being serviced.
• After installation, explain correct operation to the customer,
using the operating manual.
DANGER
Never touch electrical components immediately after the
power supply has been turned off. Electrical shock may
occur. After turning off the power, always wait 5 minutes
or more before touching electrical components.
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2. ABOUT THE UNIT
1
2.1. Precautions for using R410A refrigerant
The basic installation work procedures are the same as
conventional refrigerant (R22) models.
However, pay careful attention to the following points:
•
Since the working pressure is 1.6 times higher than that of
conventional refrigerant (R22) models, some of the piping and
installation and service tools are special. (See the table below.)
Especially, when replacing a conventional refrigerant
(R22) model with a new refrigerant R410A model, always
replace the conventional piping and flare nuts with the
R410A piping and flare nuts.
•
Models that use refrigerant R410A have a different charging
port thread diameter to prevent erroneous charging with
conventional refrigerant (R22) and for safety. Therefore,
check beforehand. [The charging port thread diameter for
R410A is 1/2 inch.]
• Be more careful that foreign matter (oil, water, etc.) does
not enter the piping than with refrigerant (R22) models.
Also, when storing the piping, securely seal the opening
by pinching, taping, etc.
When charging the refrigerant, take into account the slight
•
change in the composition of the gas and liquid phases, and
always charge from the liquid phase side whose composition
is stable.
1
2.2. Special tools for R410A
Tool name Contents of change
Pressure is high and cannot be
measured with a conventional
gauge. To prevent erroneous
mixing of other refrigerants, the
diameter of each port has been
Gauge manifold
Charge hose
Vacuum pump
Gas leakage detector
changed.
It is recommended the gauge with
seals 30 in. Hg to 768 psi for high
pressure.
30 in. Hg to 551 psi for low pressure.
To increase pressure resistance,
the hose material and base size
were changed.
A conventional vacuum pump can
be used by installing a vacuum
pump adapter.
Special gas leakage detector for
HFC refrigerant R410A.
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that
the amount of residual oil is less than 0.0014 oz/10 m (33 ft). Do
not use copper pipes having a collapsed, deformed or discolored
portion (especially on the interior surface). Otherwise, the expansion
value or capillary tube may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than
when using R22, 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 that in the
table even when it is available on the market.
WARNING
Do not use the existing (for R22) piping and flare nuts.
• If the existing materials are used, the pressure inside
the refrigerant cycle will rise and cause failure, injury,
etc. (Use the special R410A materials.)
When installing and relocating the air conditioner,
do not mix gases other than the specified refrigerant
(R410A) to enter the refrigerant cycle.
• If air or other gas enters the refrigerant cycle, the
pressure inside the cycle will rise to an abnormally
high value and cause failure, injury, etc.
2.3.
For authorized service personnel only.
WARNING
For the air conditioner to operate satisfactorily, install it as
outlined in this installation manual.
Connect the indoor unit and outdoor unit with the air
conditioner piping and cords available from your local
distributor. This installation manual describes the correct
connections using the installation set available from your local
distributor.
Installation work must be performed in accordance with
national wiring standards by authorized personnel only.
Do not turn on the power until all installation work is complete.
CAUTION
This installation manual describes how to install the indoor unit only. To install the outdoor unit, refer to the installation manual included with the outdoor unit.
• Be careful not to scratch the air conditioner when handling
it.
• After installation, explain correct operation to the customer,
using the operating manual.
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2.4. 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 to fall, water leakage, electric shock, or fire.
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.
Do not discard any accessories needed for installation until
the installation work has been completed.
Name and Shape Q’ty Application
Operating Manual
Name and Shape Q’ty Application
Filter (Small)
2
(AR9/
12/24)
Filter (Big)
Drain hose
Hose band
2
(AR18)
1
(AR24)
1
For installing drain pipe
3/4 in. (O.D. 1-1/16 in.)
For installing drain hose
Installation Manual
Installation
template
Washer
Coupler
heat insulation
(Large)
1
(This book)
1
For positioning the indoor
unit
1
For installing indoor unit
8
For indoor side pipe joint
(Large pipe)
1
Drain hose insulation B
Wired Remote
Controller
Remote Controller
Cable
Tapping screw
(M4 × 16 mm)
1
Insulates the drain hose
1
1
For connecting the
remote controller
1
For installing the remote
controller
2
Coupler
heat insulation
(Small)
Binder
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For indoor side pipe joint
(Small pipe)
1
For power supply and
Medium
remote control cable
3
binding.
Large4For fixing the coupler
heat insulation.
2.5. Optional parts
Description
Wireless Remote
Controller
Wired Remote
Controller
Simple Remote
Controller
IR Receiver Unit UTY-LRHUM
Remote sensor unit UTY-XSZX
External control set UTD-ECS5A
Model No.
UTY-LNHUM
UTY-RNNUM
UTY-RSNUM
Application
For air conditioner
operation
For air conditioner
operation
For air conditioner
operation
For the wireless
remote controller
Room temperature
sensor
For control input/
output port
3. GENERAL
This INSTALLATION MANUAL briefly outlines where and how
to install the air conditioning system. Please read over the
entire set of instructions for the indoor and outdoor units and
make sure all accessory parts listed are with the system before beginning.
]1
3.1.
Type of copper pipe and insulation material
Copper tubing for connecting the outdoor unit to the indoor
unit and insulation material is available for purchase locally.
When you purchase them, please specify the following.
• Deoxidized annealed copper pipe for refrigerant piping as:
CAUTION
Refer to the Installation Manual for the outdoor unit
for description of allowable pipe length and height
difference.
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
248 °F. (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 (19/32 in.)
or thicker and if the expected humidity exceeds 80%,
use heat insulation that is 20 mm (25/32 in.) or thicker.
If heat insulation is used that is not as thick as
specified, 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 68 °F).
]1
3.2.
Additional materials required for installation
A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire
(See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping
]1
3.3. Operating range
Cooling/Dry Mode Heating Mode
Temperature About 64 to 90 °F About 60 to 88 °F
Humidity About 80% or less ─
MODEL
Liquid pipe Gas pipe
Diameter
AR9/12 model 6.35 mm (1/4 in.) 9.52 mm (3/8 in.)
AR18 model 6.35 mm (1/4 in.) 12.70 mm (1/2 in.)
AR24 model 6.35 mm (1/4 in.) 15.88 mm (5/8 in.)
• Use pipe with water-resistant heat insulation.
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4.
ELECTRICAL REQUIREMENT
Always make the air conditioner power supply a special
branch circuit and provide a special switch and receptacle. Do
not extend the power cable.
WARNING
Refer to local codes for acceptable cable type.
Cable Cable size Remarks
Connection cable 14 AWG
3 cable + Ground
1Φ 208/230 V
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is 2% or more.
5.
SELECTING THE MOUNTING POSITION
Correct initial installation location is important because it is
difficult to move unit after it is installed.
WARNING
Select installation locations that can properly support the
weight of the indoor. Install the units securely so that they do
not topple or fall.
CAUTION
Do not install the unit in the following areas:
• Area with high salt content, such as at the seaside.
It will deteriorate metal parts, causing the parts to fail or the
unit to leak water.
• Area filled 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 fail or
the unit to leak water.
• Area that generates substances that adversely affect the
equipment, such as sulfuric 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 fibers or flammable dust, or volatile
inflammables such as paint thinner or gasoline.
If gas leaks and settles around the unit, it can cause a fire.
• Area where animals may urinate on the unit or ammonia
may be generated.
Do not use the unit for special purposes, such as storing
food, raising animals, growing plants, or preserving precision
devices or art objects.
It can degrade the quality of the preserved or stored objects.
Do not install where there is the danger of combustible gas
leakage.
CAUTION
Do not install the unit near a source of heat, steam, or
flammable gas.
Install the unit where drainage does not cause any trouble.
Install the indoor unit, outdoor unit, power supply cable,
and remote control cable at least 40 in. (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 40 in. (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.
• Decide the mounting position with the customer as
follows:
(1) Install the indoor unit on a place having a sufficient strength
so that it withstands against the weight of the indoor unit.
(2) The inlet and outlet ports should not be obstructed; the air
should be able to blow all over the room.
(3) Leave the space required to service the air conditioner.
(4) A place from where the air can be distributed evenly
throughout the room by the unit.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the connection pipe can be easily
installed.
(7) Install the unit where the drain pipe can be easily installed.
(8) Install the unit where noise and vibrations are not amplified.
(9) Take servicing, etc., into consideration and leave the spaces.
Also install the unit where the filter can be removed.
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6. INSTALLATION WORK
6.1A. Installation dimensions
(Ceiling concealed type)
Provide a service access for inspection purposes.
Do not place any wiring or illumination in the service space,
as they will impede service.
Installation Dimensions
Strong and durable ceiling
unit: mm (in.)
6.1B.
Installation dimensions (Wall mounted
type/Floor standing concealed type)
The wall mounted type/floor standing concealed type
requires a temperature correction setting. Perform this in
“10.3. Function setting”.
unit: mm (in.)
Left side
10 (13/32)
or less
10 (13/32)
or less
Right side
(PIPE side)
Left
side
100 (3-15/16)
or more
more
240 (9-7/16) or
20 (25/32) or more
20 (25/32) or more
Service access Ceiling
Indoor unit
300 (11-13/16)
or more
300 (11-13/16) or more
more
(When no ceiling)
2500 (8 ft 3 in.) or
Floor
Adjust the wind direction in the room depending on the
shape of blow out opening.
Service access
Unit
Control
box
300 (11-13/16)
100 (3-15/16)
or more
300 (11-13/16)
or more
Service space
or more
Right
side
150 (5-29/32)
or more
100 (3-15/16)
or more
Left side
150 (5-29/32)
or more
100 (3-15/16)
or more
Strong and
durable floor
Strong and
durable floor
6.2A. Installation the unit
(Ceiling concealed type)
Install the air conditioner in a location which can withstand a
load do at least 5 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.
If the job is done with the panel frame only, there is a risk that
the unit will come loose. Please take care.
6.2A.1. UNIT INSTALLATION EXAMPLE (CEILING
CONCEALED TYPE)
Connect the locally purchased duct.
(1) Inlet side
• Connect the duct to the locally purchased inlet flange.
• Connect the flange to the body with the locally purchased
tapping screws.
• Wind the inlet flange connecting to the duct with the
aluminum tape etc. to avoid the air discharge.
300 (11-13/16)
or more
300 (11-13/16)
or more
WARNING
Grill
Inlet air
Strong and
durable floor
20 (25/32)
or more
Right side
(PIPE side)
Grill
Inlet air
Strong and
durable floor
20 (25/32)
or more
20 (25/32)
or more
20 (25/32)
or more
150 (5-29/32)
or more
Duct
150 (5-29/32)
or more
CAUTION
When the duct is connected to inlet side, remove contained
filter and surely attach locally purchased filter at inlet opening.
(2) Outlet side
• Connect the duct with adjusting inside of outlet flange.
• Wind the outlet flange connecting to the duct with the
aluminum tape etc. to avoid the air discharge.
• Insulate the duct to avoid the dew condensation.
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CAUTION
Check that duct work does not exceed the range of external
static pressure of equipment.
Make sure to insulate ducts to avoid condensation.
Make sure to insulate between ducts and walls if metal ducts
are used.
Please explain handling and washing methods of locally
purchased materials to the customer.
To prevent people from touching the parts inside the unit, be
sure to install grilles on the inlet and outlet ports. The grilles
must be designed in such a way that cannot be removed
without tools.
When connecting the duct to the outlet port of the indoor unit,
be sure to insulate the outlet port and the installation screws
to prevent water from leaking around the port.
AR9/12/18 Model
• Set the static pressure outside the unit to 0.36 in. WG or
less (the allowable range is between 0 and 0.36 in. WG).
AR24 Model
• Set the static pressure outside the unit to 0.2 in. WG or
less (the allowable range is between 0 and 0.2 in. WG).
Replace the cover as follows.
• Remove the screws, and then remove cover and fan
guard.
• Install the cover with the screws as shown in the illustration
below.
Model
Screw
M5
AR9/12 9
AR18 11
AR24 13
screw (M5)
Cover
Side Inlet - Side Outlet
Insulation material (Field supply)
Aluminum tape
Flange (Field supply)
Air
Duct
(Field supply)
Intake grille
(Field supply)
Side Inlet - Side Outlet (Duct)
Insulation material (Field supply)
Aluminum tape
Flange (Field supply)
Air
Duct
(Field supply)
Intake grille
(Field supply)
Bottom Inlet - Side Outlet
Duct (Field supply)
Air
Intake grille (Field supply)
Outlet side
Flange (Field supply)
Aluminum tape
Air
Air
Tapping screw for
flange connection
(M5 x 10 mm /
Field supply)
Air
unit: mm (in.)
25 （31/32
）
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Fan guard
Inlet side
unit: mm (in.)
AR9/12 AR18 AR24
A 650 (25-19/32) 850 (33-15/32) 1050 (41-11/32)
P200 (7-7/8) × 2
B
= 400 (15-3/4)
P200 (7-7/8) × 3
= 600 (23-5/8)
P200 (7-7/8) × 4
= 800 (31-1/2)
）
7-25/32
（
）
31/32
（
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