Fujitsu ARA12LATN Service Instruction page 115

Duct Type
CAUTION
SPLIT TYPE AIR CONDITIONER R410A
REFRIGERANT
I
NSTALLATION
This Air Conditioner contains and operates
with refrigerant R410A and Polyol Ester oil.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED
INSTRUCTION SHEET
BY QUALIFIED PERSONNEL.
Refer to Commonwealth, State, Territory and local legislation,
regulations, codes, installation & operation manuals, before
the installation, maintenance and /or service of this product.
(PART NO. 9374815043)
Indoor unit is an appliance not accessible to the general public.
For authorized service personnel only.
This mark indicates procedures which, if improperly performed, are most likely to result
DANGER
in the death of or serious injury to the user or service personnel.
This mark indicates procedures which, if improperly performed, might lead to the death
WARNING
or serious injury of the user.
This mark indicates procedures which, if improperly performed, might possibly result in
CAUTION
personal harm to the user, or damage to property.
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.
This air conditioner uses new refrigerant HFC (R410A).
The basic installation work procedures are the same as conventional refrigerant models.
However, pay careful attention to the following points:
1 Since the working pressure is 1.6 times higher than that of conventional refrigerant models, some of the
piping and installation and service tools are special. (See the table below.)
Especially, when replacing a conventional refrigerant model with a new refrigerant R410A model, always
replace the conventional piping and fl are nuts with the R410A piping and fl are nuts.
2 Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous
charging with conventional refrigerant and for safety. Therefore, check beforehand. [The charging port
thread diameter for R410A is 1/2 UNF 20 threads per inch.]
3 Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with refrigerant models.
Also, when storing the piping, securely seal the openings by pinching, taping, etc.
4 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.
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 changed.
Gauge manifold
It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm
–0.1 to 3.8 MPa (–76 cmHg to 38 kgf/cm 2 ) for low pressure.
Charge hose To increase pressure resistance, the hose material and base size were changed.
Vacuum pump A conventional vacuum pump can be used by installing a vacuum pump adapter.
Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.
Copper pipes Thicknesses of Annealed Copper Pipes (R410A)
It is necessary to use seamless copper pipes and it is desirable that the
Pipe outside diameter
amount of residual oil is less than 40 mg/10m. Do not use copper pipes
having a collapsed, deformed or discolored portion (especially on the interior
6.35 mm (1/4 in.)
surface). Otherwise, the expansion valve or capillary tube may become
9.52 mm (3/8 in)
blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using
12.70 mm (1/2 in.)
conventional refrigerant, it is necessary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in the table. 15.88 mm (5/8 in)
Never use copper pipes thinner than that in the table even when it is
available on the market.
For authorized service personnel only.
WARNING
1 For the room air conditioner to operate satisfactorily, install it as outlined in this installation instruction
sheet.
2 Connect the indoor unit and outdoor unit with the room air conditioner piping and cords available standards
parts. This installation instruction sheet describes the correct connections using the installation set avail-
able from our standard parts.
3 Installation work must be performed in accordance with national wiring standards by authorized personnel
only.
4 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.
5 Do not use an extension cord.
6 Do not turn on the power until all installation work is complete.
CAUTION
This installation instruction sheet describes how to install the indoor unit only.
To install the outdoor unit, refer to the installation instruction sheet included with the outdoor unit.
• Be careful not to scratch the room air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.
• Let the customer keep this installation instruction sheet because it is used when the air conditioner is serviced or
moved.
SELECTING THE MOUNTING POSITION
WARNING
Install at a place that can withstand the weight of the indoor and outdoor units and install positively so that the
units will not topple or fall.
CAUTION
1 Do not install where there is the danger of combustible gas leakage.
2 Do not install near heat sources.
3 If children under 10 years old may approach the unit, take preventive measures so that they cannot reach
the unit.
4 Take precautions to prevent the unit from falling.
Decide the mounting position with the customer as follows:
Strong and durable ceiling
INDOOR UNIT
(1) Install the indoor unit level on a strong wall, fl oor, ceiling which is
Indoor unit
not subject to vibration.
Left
(2) The inlet and outlet ports should not be obstructed : the air should
side
be able to blow all over the room.
(3) Install the unit near an electric outlet or special branch circuit.
(4) Install the unit where connection to the outdoor unit is easy.
(5) Install the unit where the drain pipe can be easily installed.
10 cm (4 ) or more
(6) Take servicing, etc. into consideration and leave the spaces
shown on the right. Also install the unit where the fi lter can be
Left
removed.
side
(7) Install the indoor unit where vibrations and noise are not ampli-
fi ed.
(8) When installing the unit on the fl oor, provide an opening that will
allow suffi cient air to reach the air inlet panel.
Strong and durable floor
10 cm (4 ) or more 30 cm (1 ) or more
9374815043_B2.indd 1 9374815043_B2.indd 1
STANDARD PARTS
The following installation parts are furnished. Use them as required.
INDOOR UNIT ACCESSORIES
Name and Shape Q'ty Application Name and Shape
Installation For positioning the indoor Coupler
template unit heat insulation
(large)
1
Hanger For suspending the indoor Coupler
unit from ceiling
heat insulation
4 (small)
Tapping screw For installing the hanger
Binder
(ø4 × 10)
8
Filter
Special nut A For suspending the indoor
(large fl ange) unit from ceiling
4
Drain hose insulation
Special nut B
(small fl ange)
4
2 ) for high pressure.
Thickness
0.80 mm
0.80 mm
0.80 mm
1.00 mm
CONNECTING PIPE REQUIREMENT
CAUTION
Refer to the installation instruction sheet of the outdoor unit for description of the length of connecting pipe
or for difference of its elevation.
12000
MODEL
BTU/h model
Small 6.35 mm (1/4 in.)
Diameter
Large 9.52 mm (3/8 in.)
• 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).
ELECTRICAL REQUIREMENT
Connection cord (mm 2 )
MAX. MIN.
2.5 1.5
• Use conformed cord with Type 245 IEC57.
• Install all electrical works in accordance to the standard.
• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units. (Both indoor unit and outdoor unit)
Right
side
30 cm (1 ) or more
Right side
(PIPE side)
3 cm (1 ) 3 cm (1 )
or more or more
INSTALLATION
PROCEDURE
Install the air conditioner as follows:
Q'ty Application
1
INDOOR UNIT
For indoor side pipe joint
(large pipe)
INSTALLATION
1
WARNING
For indoor side pipe joint
1 Install the air conditioner in a location which
(small pipe)
1 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,
For fi xing the coupler heat
(Large)
the indoor unit may fall and cause injuries.
insulation
4
2 If the job is done with the panel frame only, there
9000 BTU/h model
is a risk that the unit will come loose. Please
2
take care.
12000 - 22000 BTU/h
CAUTION
3
models
For installation, refer to the technical data.
Insulates the drain hose
and vinyl hose connection
1
A. CEILING CONCEALED TYPE
1. INSTALL THE FILTERS
• Install the fi lters to the unit.
Filter
Filter
Unit
This unit may also be installed with the air inlet facing down.
See also 1 - B - 1 for such cases.
B. FLOOR STANDING CONCEALED
TYPE
1. INSTALL THE FILTERS
• Remove the 4 tapping screws, and then remove cover.
• Install the cover with the 4 tapping screws as shown in the
illustration below.
Tapping screw
14000/18000 Cover
BTU/h model
6.35 mm (1/4 in.)
12.70 mm (1/2 in.)
• Install the fi lters to the unit referring to 1 - A -1.
Filter
2. INSTALLING THE HANGERS
• Install the hangers to the unit (4 places).
Hanger
3. DRILLING HOLES FOR BOLTS AND IN-
STALLING THE BOLTS
• Drilling position for bolts.
88.6 cm (34-7/8 )
CAUTION
Secure with an M10 anchor bolts. If securing the
unit to the fl oor is diffi cult, fi rst build a stand or
platform.
2. DRILLING HOLES FOR BOLTS AND IN- 4. LEVELING
Base horizontal direction leveling on top of the unit.
STALLING THE BOLTS
• Using the installation template, drill holes for bolts (4 holes).
Ceiling
Level
Installation template
Drilling
position for
bolts
Good
3. INSTALLING THE HANGERS
Level
• Fasten the hanging bolts to the ceiling and install special nuts
A and B.
Air
M10 Hanging bolt
Special nut A
Good
Special nut B
5. SERVICE HOLE DIMENSIONS
• Install the hangers to the unit (4 places).
Open a service hole with the dimensions shown.
Hanger
Service hole
Air
Unit
Hanger
30 cm (1 )
or more
Tapping screw
6. INTAKE DUCT CONNECTION
Follow the procedure in the following fi gure to the ducts.
811 mm
• Hang the unit.
Pass the hanging bolts through the hangers (4 places).
Hanging bolt
Hanger
The air inlet duct can be changed by replacing the intake cover.
Unit
CAUTION
Fasten the unit securely with special nuts A and B.
INSTALL THE DRAIN HOSE
M10
• Install the drain hose with downward gradient (1/50 to 2/50)
and so there are no rises or traps in the hose.
30 to 50 mm
(1-3/16" to 2-1/36") • Use general hard polyvinyl chloride pipe and connect it with
adhesive (polyvinyl chloride) so that there is no leakage.
• When the hose is long, install supporters.
• Do not perform air bleeding.
• Always heat insulate the indoor side of the drain hose.
4. INSTALL THE UNIT
• Fix the unit. A. CEILING CONCEALED TYPE
Install the unit and fasten with special nut B.
Drain
hose
Outlet air
flow
Good
Arrange the drain hose
Special nut B
lower than this portion
Unit
Rise
5. LEVELING
Base horizontal and vertical direction leveling on top of the unit.
Level 1.5 to 2 m (5 to 6.5 ft)
Air bleeding
B. FLOOR STANDING CONCEALED TYPE
Drain side
Good Bad
Good Bad
CAUTION
1 Install the drain hose so that the control box
CAUTION
cover can be removed for servicing.
In order to prevent water from leaking around
2 In order to prevent water from leaking into the
the outlet port, make sure to insulate it (on both
control box, make sure that the drain hose is
the CEILING CONCEALED type and the FLOOR
well insulated.
STANDING CONCEALED type).
3 After the wiring is connected and installation of
NOTE: INSTALLING DRAIN HOSE the piping and drain hose is complete, make a
seal around the opening in the wall.
CAUTION
The outside diameter of drain port is 26 mm, use a suitable
Install the drain hose in accordance with the in-
drain hose.
structions in this installation instruction sheet and
keep the area warm enough to prevent condensa-
tion. Problems with the piping may lead to water Drain hose insulation
leaks.
Unit
Unit
Drain hose
CAUTION
When air is taken in from the bottom side, the
operating sound of the product will easily enter
the room.
Install the product and intake grilles where the
affect of the operating sound is small.
CAUTION
Drain side
1 If an intake duct is installed, take care not to
damage the temperature sensor.
2 Be sure to install the air inlet grille and the
Bad
air outlet grille for air circulation. The correct
temperature cannot be detected.
Unit
Air Outlet Grille Air Inlet Grille
(Room)
Bad
3 Grills must be fi xed so that man cannot touch
indoor unit fan, and cannot be removed by only
hand operation without tool.
4 Be sure to install the air fi lter in the air inlet. If
the air fi lter is not installed, the heat exchanger
may be clogged and its performance may
decrease.
Control box
2
CONNECTING THE
PIPE
CAUTION
1 Do not use mineral oil on fl ared part. Prevent
mineral oil from getting into the system as this
would reduce the lifetime of the units.
2 While welding the pipes, be sure to blow dry
Trap
nitrogen gas through them.
Bad 1. FLARING
(1) Cut the connection pipe to the necessary length with a pipe
cutter.
(2) Hold the pipe downward so that cuttings will not enter the
pipe and remove the burrs.
(3) Insert the fl are nut (always use the fl are nut attached to the
indoor and outdoor units respectively) onto the pipe and
Supporter
perform the fl are processing with a fl are tool.
Use the special R410A fl are tool, or the conventional fl are
tool.
Check if [L] is flared uniformly
and is not cracked or scratched.
B
Die
A
L
Pipe
Dimension A (mm)
Pipe outside diameter
Flare tool for R410A, clutch
6.35 mm (1/4 in.)
Rise
9.52 mm (3/8 in.) 0 to 0.5
12.70 mm (1/2 in.)
Bad
0
Pipe outside diameter Dimension B (mm)
-0.4
6.35 mm (1/4 in.) 9.1
9.52 mm (3/8 in.) 13.2
12.70 mm (1/2 in.) 16.6
When using conventional fl are tools to fl are R410A pipes, the
dimension A should be approximately 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 flats
Pipe outside Width across fl ats
diameter of Flare nut
6.35 mm (1/4 in.) 17 mm
9.52 mm (3/8 in.) 22 mm
Drain hose insulation
12.70 mm (1/2 in.) 26 mm
0 mm Drain hose
(Continued to the next page.)
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