Fujitsu ARA12LATN Service Instruction page 119

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. 9374318148)
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.
STANDARD PARTS
The following installation parts are furnished. Use them as required.
INDOOR UNIT ACCESSORIES
Name and Shape Q'ty Application Name and Shape Q'ty
Hanger For suspending the Coupler heat
indoor unit from ceiling
insulation (large)
1
4
Coupler heat
Drain hose insulation Insulates the drain
insulation (small)
hose and vinyl hose 1
1
Binder
1
(large)
Special nut A
(large fl ange)
4
Special nut B
(small fl ange)
4
OPTIONAL PARTS
When connecting the square duct and round duct, use the optional square fl ange or round fl ange and fl exible duct.
Square fl ange Round fl ange
Model name : UTD–SF045T (P/N 9098180007) Model name : UTD–RF204 (P/N 9093160004)
40 mm
1065 mm 85 mm
Flexible duct Long-life fi lter
Model name : UTD–RD202 (P/N 9074165004) Model name : UTD–LF25NA (P/N9079892004)
ø200 mm
L 2 m
507 mm
9374318148_B2front.indd 1 9374318148_B2front.indd 1
For authorized service personnel only.
WARNING
1 For the air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet.
2 Connect the indoor unit and outdoor unit with the air conditioner piping and cords available standards parts.
This installation instruction sheet describes the correct connections using the installation set available 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 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 serv-
iced 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 the unit near heat source of heat, steam, or fl ammable gas.
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:
INDOOR UNIT
(1) Install the indoor unit on a place having a suffi cient strength so that it withstand 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) Install the unit where the drain pipe can be easily installed.
(5) Providing as much space as possible between the indoor unit and the ceiling will make
work much easier.
(6) If installing in a place where its humidity exceeds 80%, use heat insulation to prevent
2 ) for high pressure. condensation.
Maintenance hole dimension
It shall be possible to install and remove the control box. It shall be possible to install and remove the control box, fan
units and fi lter.
Maintenance hole
300 mm
Thickness
Control box
0.80 mm
0.80 mm
0.80 mm
1.00 mm
500 mm
CONNECTING PIPE REQUIREMENT
CAUTION
Refer to the installation instruction sheet of the outdoor unit for description of the length of connecting pipe
Application
or for difference of its elevation.
For indoor side pipe
joint (large pipe)
Small 6.35 mm (1/4 in.)
Diameter
Large 15.88 mm (5/8 in.)
For indoor side pipe
joint (small pipe)
• Use pipe with water-resistant heat insulation.
CAUTION
For fi xing the drain
Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks.
hose
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%,
For suspending the
install heat insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insula-
indoor unit from ceiling
tion 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 insula-
tion. 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 the disconnect device with a contact gap of at least 3 mm nearby the units.
(Both indoor unit and outdoor unit)
• Install all electrical works in accordance to the standard.
INSTALLATION
PROCEDURE
Install the air conditioner as follows:
1 INDOOR UNIT
INSTALLATION
WARNING
1 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.
2 If the job is done with the panel frame only, there
is a risk that the unit will come loose. Please take
care.
CAUTION
For installation, refer to the technical data.
1. INSTALLING THE HANGERS
WARNING
When fastening the hangers, make the bolt posi-
tions uniform.
Hanging bolt installation diagram.
(Example)
740 mm
477 mm
(Top side)
300 mm 150 mm
or more or more
(Left side)
Maintenance hole
300 mm
Intake panel
The distance of is adjustable according to the place of the
hanging bolts.
(MAX : 550 mm, MIN : 410 mm)
Control box
1550 mm
4. INTAKE DUCT CONNECTION
Follow the procedure in the following fi gure to the ducts.
The air inlet duct can be changed by replacing the intake grille
and fl ange.
For the bottom air intake, follow the procedure of
installation.
(The factory setting is back air intake.)
1
Slide the unit in the arrow direction and fasten it.
Hanging bolt M10
Special nut A
(Obtained locally) Install the drain hose in accordance with the instruc-
Washer tions in this installation instruction sheet and keep
(Obtained locally)
the area warm enough to prevent condensation.
Problems with the piping may lead to water leaks.
Special nut B
NOTE: INSTALL THE DRAIN HOSE
Hanger
• Install the drain hose with downward gradient (1/50 to
1/100) and so there are no rises or traps in the hose.
• Use general hard polyvinyl chloride pipe (VP25) [outside diam-
eter 38mm] and connect it with adhesive (polyvinyl chloride) so
that there is no leakage.
• When the hose is long, install supporters.
Bolt Strength 9.81 to 14.71 N·m (100 to 150 kgf·cm)
• Do not perform air bleeding.
• Always heat insulate the indoor side of the drain hose.
WARNING
Outlet
Fasten the unit securely with special nuts A and B.
air flow
2. LEVELING
OK
Base vertical direction leveling on the unit (right and left).
Arrange the drain hose lower
than this portion
Level meter
(Left side)
Base horizontal direction leveling on top of the unit.
Drain hose
Give a slight tilt to the side to which the drain hose is connected.
The tilt should be in the range of 0 mm to 5 mm.
3. INSTALLING DRAIN HOSE
Install the drain hose according to the measurements given in the
• When the unit is shipped from the factory, the drain port is on the
following fi gure.
240 mm
left side (control box side).
• When using the drain port on the right side of the unit, reinstall
the drain cap to the left side drain port.
(Left side)
Drain port
Liquid pipe
Gas pipe
Drain pipe
ø 38 mm (O.D.)
240 mm
Always check that the drain cap is installed to the
unused drain port and is fastened with the nylon
(Right side)
fastener.
If the drain cap is not installed, or is not suffi ciently
fastened by the nylon fastener, water may drip dur-
ing the cooling operation.
Drain pipe
ø 38 mm (O.D.)
The drain cap is attached
at the factory setting.
5. OUTLET DUCT CONNECTION
CAUTION
Duct installation pattern (
When air is taken in from the bottom side, the operat-
ing sound of the product will easily enter the room.
Install the product and intake grilles where the affect (1) Square duct
of the operating sound is small.
(2) Round duct outlet ×4
CAUTION (This is the factory setting.)
1 If an intake duct is installed, take care not to
damage the temperature sensor (the temperature When using as a square duct
sensor is attached to the intake port fl ange). (1) Cut the slit seam
2 Be sure to install the air inlet grille and the air
outlet grille for air circulation. The correct tem-
perature cannot be detected.
Unit
(2) Turn up the insulation around the points to be cut according
to the outlet port shape working points so that the insulation
Air Outlet Grille Air Inlet Grille
does not stick out at the
(Room)
for
→
3 Grills must be fi xed so that man cannot touch
indoor unit fan, and cannot be removed by only
hand operation without tool.
2
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.
(3) Cut with nippers and remove the sheet metal.
(4) Since there is a slit in the insulation, use radio pliers, tweezers,
etc. to stretch the screw hole part used when installing the
round fl ange and square fl ange when connecting the duct.
• Cut the drain hose insulation at a position approximately 30mm
CAUTION
from the end with cutters, etc.
• Stick the large drain hose insulation at the drain hose installation
side.
• Stick the small drain hose insulation at the drain cap side.
30 mm
450 mm 420 mm
Cut line
30 mm
Drain hose
Drain hose
insulation insulation
(large) (large)
unit
unit
Drain
Trap
hose
0 mm (0")
Drain hose
Drain hose
NO
Drain hose insulation (small) Drain hose
insulation
(small)
Unit Unit
Rise
0 mm (0")
Drain cap
Supporter
1.5 to 2 m
Air bleeding
Drain cap Nylon fastener
CAUTION
6. FRESH AIR INTAKE
(Processing before use)
CUT PART)
(1) When taking in fresh air, cut a slit shaped cabinet in the left
side of the outer case with nippers.
Cut
with a cutter.
Cut
Cabinet (iron plate) Square hole
CAUTION
1 When removing the cabinet (iron plate), be care-
ful not to damage the indoor unit internal parts
and surrounding area (outer case).
2 When processing the cabinet (iron plate), be
part.
careful not to injure yourself with burrs, etc.
(2) Install the round fl ange (option parts) to the fresh air intake.
Round duct
(3) Connect the duct to the round fl ange.
(4) Seal with a band and vinyl tape, etc. so that air does not leak
from the connection.
Duct
(Continued to the next page.)
8/22/06 1:26:44 PM 8/22/06 1:26:44 PM