Fujitsu AUYA36LB Installation Instruction Sheet

Cassette Type

SPLIT TYPE AIR CONDITIONER
INSTALLATION
INSTRUCTION SHEET
(PART No. 9378590014-07)
For authorized service personnel only.
This mark indicates procedures which, if improperly performed, are most likely to result in the death of
DANGER
or serious injury to the user or service personnel.
This mark indicates procedures which, if improperly performed, might lead to the death or serious injury
WARNING
of the user.
This mark indicates procedures which, if improperly performed, might possibly result in personal harm
CAUTION
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 2 ) for high pressure. –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
amount of residual oil is less than 40 mg/10 m. Do not use copper pipes Pipe outside diameter
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
12.70 mm (1/2 in.)
using conventional refrigerant, it is necessary to choose adequate materials.
15.88 mm (5/8 in.)
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 19.05 mm (3/4 in.)
available on the market.
STANDARD PARTS
The following installation parts are furnished.
Use them as required.
ACCESSORIES OPTIONAL PARTS
Name and Shape Q'ty Application Exterior Parts name Model No.
Template For installing indoor unit Wired
(Carton top) 1 remote
UTB - * UD
controller
Washer For installing indoor unit
Air outlet
8
shutter UTR - YDZC
plate
Coupler Heat For indoor side pipe joint
Wireless
Insulation 2
remote
controller
UTY - LRH*A1
and I, R,
Insulation For installing drain pipe
receiver
1 unit
Drain Hose Assy For installing drain pipe
1
Hose Band Assy For installing drain pipe
1
Drain Pipe For installing drain pipe
Insulation 1
Binder (Large) For electrical wiring
3
Binder (Small)
For electrical wiring
1
Wired Remote
Controller
1
Remote Controller For connecting the
Cable(*1) 1 remote controller
Tapping screw For installing the remote
(ø4  16)
2 controller
(*1) This part is not furnished for AUT* series
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 cables available from our 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 cable.
6 Do not turn on the power until all installation work is complete.
CAUTION
This installation instruction sheet describes how to 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 serviced or moved.
CONNECTION 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.
Liquid 9.52 mm (3/8 in.)
Diameter
Gas 15.88 mm (5/8 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 cable (mm 2 )
MAX. MIN.
2.5 1.5
 Use conformed cable 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)
CAUTION
Be sure to execute the electrical work according to the Lows of each country and the Installation Instructions.
In addition, be sure to set as exclusive line and use the rated voltage and circuit breaker.
Thickness
0.80 mm
0.80 mm
0.80 mm
1.00 mm
1.20 mm
SELECTING THE MOUNTING Discharge Direction Setting
POSITION • The discharge direction can be selected as shown below.
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.
Summary Decide the mounting position together with the customer as follows:
Unit control is per-
WARNING
formed by wired
remote controller
Select installation locations that can properly support
the weight of the indoor. Install the units securely so that
they do not topple or fall.
Install the plate at outlet
when carrying out 3-way
direction operation.
CAUTION
1 Do not install where there is the danger of combus-
* Select the most appropriate airfl ow direction from 3 or 4 directions ac-
Unit control is per- tible gas leakage. cording to the shape of the room and the installation position.
formed by wireless
2 Do not install the unit near heat source of heat, steam,
remote controller. * When changing the number of outlets, we recommend using the optional
or fl ammable gas.
AIR OUTLET SHUTTER PLATE KIT to close the outlet.
3 If children under 10 years old may approach the unit,
take preventive measures so that they cannot reach * For the specifi c closing pattern, please refer to the attached AIR OUTLET
the unit. SHUTTER PLATE KIT'S MANUAL. (Do so before installing the decora-
tive panel as it will be installed on the body.)
(1) Install the indoor unit on a place having a suffi cient strength so that it
* Be sure to make the function settings with the remote controller
withstands against the weight of the indoor unit.
according to the number of airfl ow outlets and the installed ceiling
(2) The inlet and outlet ports should not be obstructed; the air should be
height. (See 8 FUNCTION SETTING.)
able to blow all over the room.
(3) Leave the space required to service the air conditioner.
(4) The ceiling rear height as shown in the fi gure.
(5) A place from where the air can be distributed evenly throughout the
room by the unit.
(6) A place from where drainage can be extracted outdoors easily.
(7) Install the unit where noise and vibrations are not amplifi ed.
Strong and durable ceiling
1,500 mm
3,000 mm or more or more
Obstruction
Floor
This product can be installed at a height of up to 4.2 m (30Type : 3.6 m).
However, if the heights of the ceiling is higher than 3.2 m or lower than 2.7 m,
it is necessary to set the position from remote controller.
(See 8 FUNCTION SETTING.)
INSTALLATION PROCEDURE
Install the air conditioner as follows:
1
PREPARATION BEFORE INSTALLATION
(1) Positions of the ceiling opening, hanging bolt pitch, piping and ducts.
(unit: mm)
• Ceiling opening and hanging bolt pitch.
950 mm (Panel frame)
20 - 45 mm 860 - 910 mm (Ceiling opening) 20 - 45 mm
840 mm (Body frame)
795 mm (Hanging bolt pitch)
50 mm
200 mm
130 mm
• Refrigerant piping and drain piping positions.
Drain pipe
(Connect the attached 358 mm 278 mm 60 mm
drain hose)
Model A B
24LB 246 256
30/36/45/54LB 288 298
• Airfl ow split-fl ow duct and fresh air inlet positions.
Airfl ow split-fl ow duct connecting port 100 mm
Fresh air inlet position 83 mm
352 mm
Detailed diagram of branched duct connecting port
(4 sides)
250 mm
Refrigerant 88 mm
Drain pipe pipe Burling hole pitch
Airfl ow split-fl ow duct connecting port
Fresh air inlet position
Note)
Conduct proper insulation when connecting the split-fl ow ducts and
fresh air inlet.
Insulation
Fresh air inlet position
When sucking in the fresh air, please detach the insulation affi xed
to the drain pan.
3
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 nitrogen
gas through them.
100 mm
1. FLARING
or more*
*Please ensure suffi cient maintenance space during installation.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
4 DIRECTION 3 DIRECTION
(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 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 fl ared uniformly and
is not cracked or scratched.
Die
A
Pipe
Dimension A (mm)
Pipe outside diameter
Flare tool for R410A, clutch type
6.35 mm (1/4 in.)
9.52 mm (3/8 in.)
0 to 0.5
12.70 mm (1/2 in.)
15.88 mm (5/8 in.)
19.05 mm (3/4 in.)
Dimension B
Pipe outside diameter
6.35 mm (1/4 in.) 9.1
9.52 mm (3/8 in.) 13.2
12.70 mm (1/2 in.) 16.6
15.88 mm (5/8 in.) 19.7
19.05 mm (3/4 in.) 24.0
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.
Pipe outside Width across fl ats
Width across
fl ats diameter of Flare nut
6.35 mm (1/4 in.) 17 mm
9.52 mm (3/8 in.) 22 mm
12.70 mm (1/2 in.) 26 mm
15.88 mm (5/8 in.) 29 mm
19.05 mm (3/4 in.) 36 mm
3. INSTALLING DRAIN PIPE
(2) Setting the positions of hanging bolt and ceiling opening.
• Use an installation template (packaging top surface) to set the
positions of the hanging bolt and ceiling opening and drill holes.
(3) Hanging structure.
• Select a strong structure for the hanging location.
•
• If necessary, reinforce the hanging bolt with quakeproof columnar Do not insert the drain piping into the sewer where sulfu-
rous gas occurs. (Heat exchange erosion may occur)
•
support material to prevent shaking.
Insulate the parts properly so that water will not drip
• Use hanging bolts of M8-M10.
from the connection parts.
•
Check for proper drainage after the construction by
using the visible portion of transparent drain port and
the drain piping fi nal outlet on the body.
2
INDOOR UNIT INSTALLATION
•
Do not apply adhesive agent on the drain port of the
body. (Use the attached drain hose and connect the
drain piping)
WARNING
Note: Install the drain pipe.
1 Install the air conditioner in a location which can
 Install the drain pipe with downward gradient (1/50 to 1/100) and so
withstand a load do at least fi ve times the weight there are no rises or traps in the pipe.
of the main unit and which will not amplify sound  Use general hard polyvinyl chloride pipe (VP25) [outside diameter
32 mm] and connect it with adhesive (polyvinyl chloride) so that there
or vibration. If the installation location is not strong
is no leakage.
enough, the indoor unit may fall and cause injuries.
 When the pipe is long, install supporters.
2 If the job is done with the panel frame only, there is a  Do not perform air bleeding.
risk that the unit will come loose. Please take care.  Always heat insulate the indoor side of the drain pipe.

If it is impossible to have suffi cient gradient of pipe, perform drain
lift-up.
1. BODY INSTALLATION
1) Install the attached washer and nut (prepared on site) onto the hanging bolt.
Drain pipe
2) Hook the body onto the hanging bolt.
3) Adjust the dimensions of the ceiling surface from the body.
Gas pipe After installing the decorative panel, you can make fi ne adjustment
Liquid pipe of the height of the body. For details, refer to the installation manual
of the decorative panel.
WARNING
•
VP25 (O.D. 32 mm)
Perform fi nal tightening by tightening the double nut fi rmly.
• Downward gradient 1/100 to 1/50
Be sure to install the body horizontally and adjust the
height below the body and the ceiling surface properly.
PROHIBITED:
Hanging bolt
Nut A
Rise
When lifting up drain:
Washer
• Height of inclined pipe should be less than 850 mm from the ceiling.
A rise dimension over this range will cause leakage.
After installing the body,
100 mm
tighten the nuts. • Lift up the pipe vertically at the position of 300 mm or less from the
83 mm
unit.
Cut out
VP25 (O.D. 32 mm)
local arrangement
2.5 mm hole
Washer
Nut B (Double Nut)
70 mm
Cut out
2. LEVELING
Using a level, or vinyl hose fi lled with water, fi ne adjust so that the body
850 mm or less
is level.
2.5 mm hole
Inclined installation so as the drain pipe side is higher may cause a mal-
function of the fl oat switch, and may cause water leakage.
Drain pipe
Vinyl hoses
4
2. BENDING PIPES INSTALLING THE COUPLER
The pipes are shaped by your hands. Be careful not to collapse them.
°
Do not bend the pipes in an angle more than 90 .
When pipes are repeatedly bend or stretched, the material will harden,
After checking for gas leaks, insulate by wrapping insulation around the
making it diffi cult to bend or stretch them any more. Do not bend or
two parts (gas and liquid) of the indoor unit coupling, using the coupler
stretch the pipes more than three times.
heat insulation.
After installing the coupler heat insulation, wrap both ends with vinyl tape
CAUTION so that there is no gap.
1 To prevent breaking of the pipe, avoid sharp bends.
Coupler heat insulation
Bend the pipe with a radius of curvature of 150 mm
Body
or over.
2 If the pipe is bent repeatedly at the same place, it will
Be sure to overlap the
break.
insulation
3. CONNECTION PIPES
Indoor unit
Must fi t tightly against body without any gap.
(1) Detach the caps and plugs from the pipes.
CAUTION
1 Be sure to apply the pipe against the port on the in-
B
door unit correctly. If the centering is improper, the
fl are nut cannot be tightened smoothly. If the fl are
nut is forced to turn, the threads will be damaged.
2 Do not remove the fl are nut from the indoor unit pipe
5
until immediately before connecting the connection
pipe.
(2) Centering the pipe against port on the indoor unit, turn the fl are nut
with your hand.
To prevent gas leakage, coat the fl are
1 Before starting work, check that power is not being
surface with alkylbenzene oil (HAB).
supplied to the indoor unit and outdoor unit.
Do not use mineral oil.
2 Match the terminal board numbers and connection
Connection pipe
cable colors with those of the outdoor unit.
0 (mm)
(Gas)
-0.4
Erroneous wiring may cause burning of the electric
Connection pipe parts.
(Liquid)
3 Connect the connection cables fi rmly to the terminal
board. Imperfect installation may cause a fi re.
4 Always fasten the outside covering of the connection
cable with the cable clamp. (If the insulator is chafed,
electric leakage may occur.)
5 Always connect the ground wire.
(3) When the fl are nut is tightened properly by your hand, use a torque
wrench to fi nally tighten it.
A. For solid core wiring
Holding spanner
(1) To connect the electrical terminal, follow the below diagram and
Body side
connect after looping it around the end of the wire.
(2) Use the specifi ed wires, connect them securely, and fasten them
so that there is no stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw
Torque wrench
heads may be damaged and prevent the screws from being
properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the screws
CAUTION
may break.
(5) See the table 1 for the terminal screw tightening torques.
Hold the torque wrench at its grip, keeping it in the
right angle with the pipe, in order to tighten the fl are nut
correctly.
Flare nut Tightening torque
6.35 mm (1/4 in.) dia. 14 to 18 N·m (140 to 180 kgf·cm)
9.52 mm (3/8 in.) dia. 33 to 42 N·m (330 to 420 kgf·cm)
12.70 mm (1/2 in.) dia. 50 to 62 N·m (500 to 620 kgf·cm)
15.88 mm (5/8 in.) dia. 63 to 77 N·m (630 to 770 kgf·cm)
19.05 mm (3/4 in.) dia. 100 to 110 N·m (1,000 to 1,100 kgf·cm)
Working procedure
1) Install the attached drain hose to the drain port of the body. Install the
hose band from the top of the hose within the graphic display area.
WARNING
2) Use vinyl adhesive agent to glue the drain piping (PVC pipe VP25)
which is prepared on site or elbow socket.
(Apply color adhesive agent evenly until the gauge line and seal)
3) Check the drainage. (See separate diagram)
4) Install the heat insulation.
5) Use the attached heat insulation to insulate the drain port and band
parts of the body.
Install the knob Attached
faces upward hose band
CAUTION
Attached drain hose
heat insulation
Locally arranged
vinyl pipe
Attached drain hose
Pipe size
Attached heat insulation
VP25 (O.D. 32 mm)
(a) Top view (b) Side view
Hanging fi ttings 1.5 to 2 m
VP25
Applying area
of adhesive
Hose band 35 mm
Gauge line
4 mm or less
5 - 10 mm
20 mm
Trap (d) Hose opening view
Air bleeding
Wind the attached heat insulation
around the hose band
(c) Top view Make sure the alignment
is on top
Downward gradient
300 mm or less
1/100 to 1/50
850 mm or less
Make sure there are no gaps
Horizontal or up-
ward gradient Note)
Check for drainage
Pour about 1 liter of water from the position shown in the diagram or from
the airfl ow outlet to the dew tray. Check for any abnormalities such as
VP30 (O.D. 38 mm) or more
strange noises and whether the drain pump functions normally.
Downward gradient 1/100 to 1/50
HEAT INSULATION
Loop
Screw with spe-
cial washer
Screw with spe-
cial washer
Wire end
No gap
Wire (Loop)
Wire end
Coupler heat insulation (Loop)
Wire
Terminal
board
CAUTION
Terminal block
WARNING
When using solid core wires, do not use the attached
ring terminal. If you use the solid core wires with the ring
terminal, the ring terminal's pressure bonding may mal-
function and cause the wires to abnormally heat up.
B. For strand wiring
ELECTRICAL WIRING
(1) Use ring terminals with insulating sleeves as shown in the fi gure
below to connect to the terminal block.
(2) Securely clamp the ring terminals to the wires using an
appropriate tool so that the wires do not come loose.
(3) Use the specifi ed wires, connect them securely, and fasten them
so that there is no stress placed on the terminals.
WARNING
(4) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw
heads may be damaged and prevent the screws from being
properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws
may break.
(6) See the table 1 for the terminal screw tightening torques.
Ring terminal
Sleeve
Screw with spe-
cial washer
Screw with spe-
cial washer
Ring terminal
Ring
Wire
terminal
Wire
Terminal
board
Terminal block
WARNING
Use ring terminals and tighten the terminal screws to
the specifi ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage
inside the unit.
Table 1
Tightening torque
M4 screw 12 to 18 N·m (12 to 18 kgf·cm)
(Continued to the next page)