Fujitsu ABYA12-24LBTH Installation Manual
INSTALLATION MANUAL
VRF SYSTEM
INDOOR UNIT
Floor / Ceiling Type
Contents
1. SAFETY PRECAUTIONS ............................................. 2
2. ABOUT THE UNIT
2.1. Precautions for using R410A refrigerant ...............2
2.2. Special tool for R410A ........................................... 2
2.3. Accessories ...........................................................3
2.4. Optional parts ........................................................ 3
3. INSTALLATION WORK
3.1. Selecting an installation location ...........................4
3.2. Installation dimension ............................................4
3.3. Installation the unit................................................. 4
4. PIPE INSTALLATION
4.1. Selecting the pipe material .................................... 6
4.2. Pipe requirement ................................................... 7
4.3. Flare connection (pipe connection) .......................7
4.4. Installing heat insulation ........................................ 8
5. INSTALLING DRAIN HOSE ......................................... 9
6. ELECTRICAL WIRING
6.1. Electrical requirement .......................................... 11
6.2. Wiring method ..................................................... 11
6.3. Unit wiring ............................................................ 11
6.4. Connection of wiring ........................................... 13
6.5. External input and external output
(Optional parts) ....................................................13
7. FIELD SETTING
7.1. Setting the address.............................................. 16
7.2. Custom code setting ............................................ 17
7.3. Function setting ................................................... 18
8. MOUNT THE COVER PLATE AND THE INTAKE
GRILLE
8.1. Handling for the pipe take-off part ....................... 19
8.2. Mount the cover plate (Right) .............................. 19
8.3. Mount the cover plate (Left)................................. 20
8.4. Mount the intake grille .........................................20
9. TEST OPERATION
9.1. Test operation using PCB (Outdoor unit) ............. 20
9.2. Test operation using remote controller ................ 20
10. CHECK LIST ............................................................... 20
11. ERROR CODES ......................................................... 21
PART NO. 9367701070-05
For authorized service personnel only.
English
En-2
1. SAFETY PRECAUTIONS
Be sure to read this Manual thoroughly before installation.•
The warnings and precautions indicated in this Manual •
contain important information pertaining to your safety. Be
sure to observe them.
Hand this Manual, together with the Operating Manual, to the •
customer. Request the customer 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 fire. 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.
• Except for EMERGENCY, never turn off main as well
as sub breaker of the indoor units during operation. It
will cause compressor failure as well as water leakage.
First, stop the indoor unit by operating the controller,
converter or external input device and then cut the
breaker.
Make sure to operate through the controller, converter or
external input device.
When the breaker is designed, locate it at a place where
the users cannot start and stop in the daily work.
CAUTION
This mark indicates procedures which,
if improperly performed, might possibly
result in personal harm to the user, or
damage to property.
2. ABOUT THE UNIT
1
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.
WARNING
• 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.
]1
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
specifically for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher
than the R22, fai lure 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 backflow 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.
En-3
]1
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.
Name and Shape Q’ty Application
Operating Manual
1
Installation Manual
1
(This book)
Cover plate (Left)
1
Cover plate (Right)
1
Tapping screw
(M4
×
10mm)
2
Installation
template
1
For positioning the
indoor unit
For under ceiling type
Bracket (Left)
1
For suspending
the indoor unit from
ceiling
Bracket (Right)
1
Special nut
4
Wall bracket
2
For suspending the
indoor unit on the wall
Tapping screw
(M4
×
20mm)
6
For fi xing the wall
bracket
Coupler heat
insulation
2
For indoor side pipe
joint
Binder
Large 4
For fi xing the coupler
heat insulation
Medium 3
For power supply,
transmission and
remote controller cable
binding
Drain hose
1
For installing drain
pipe
Hose Band
1
For installing drain
hose
Drain hose insulation
1
Adhesive type
100 × 220
VT wire
1
For fi xing the drain
hose L 280 mm
Insulation (Pipe)
1
Adhesive type
160 × 110
Silencer pipe
1
Connect the silencer
pipe to the small (liquid)
pipe.
]
1
2.4. Optional parts
Description Part No. Application
Auxiliary pipe
9374714025
For indoor side pipe
joint
(For AB18, AB24)
External output wire 9379529006 For control output port
External input
(voltage) wire
9368779016 For control input port
External input
(no voltage) wire
9368779009 For control input port
En-4
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.
]
1
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 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 fi bers or fl ammable dust, or volatile
inflammables 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 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.
• Do not install the unit near a source of heat, steam, or
fl ammable gas.
• Install the unit where drainage does not cause any
trouble.
• 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.
(1) Install the indoor unit on a place having a suffi cient
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) Install the unit where connection to the outdoor unit is
easy.
(5) Install the unit where the connection pipe can be easily
installed.
(6) Install the unit where the drain pipe can be easily installed.
(7) Install the unit where noise and vibrations are not
amplifi ed.
(8) Take servicing, etc., into consideration and leave the
spaces. Also install the unit where the fi lter can be
removed.
(9) Do not install the unit where it will be exposed to direct
sunlight.
]
1
3.2. Installation dimension
Floor console
300
or more
Left Right
Unit : mm
300
or more
Under ceiling
Ceiling
Ceiling
Indoor unit
Left
150
or more
300
or more
2300
or more
Unit : mm
Floor
20 or more
Right
]
1
3.3. Installation the unit
WARNING
• Install the air conditioner in a location which can
withstand a load of 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.
En-5
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.
Unit : mm
Wall bracket
Side of set
990
500
65
655
530
45
65
Ø
50
125 100
Ø
100
245
B. Under ceiling type
Using the installation template, drill holes for piping and
suspension bolts (for holes).
Unit : mm
Installation
template
200
Drilling position
for suspension
bolt
Ceiling
Wall
Drilling position for piping
900
B-1. Drilling for piping
Select piping and drain directions.
To p
Rear
(Install the drain hose
in this direction.)
Right
Hole
VIEW
For direction, 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.
Unit : mm
Wall
6
Indoor side Outdoor side
3.3.1. Preparing indoor unit installation
Open the intake grille and remove the 3 screws.
Machine screw
Tapping screw
Tapping screw
Intake grille
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 console type
Drilling for piping
Select piping and drain directions.
The piping and drain can be made in 3 directions as shown
below.
VIEW
Hole
For direction, 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
(Right side)
Drain hose
(Left side)
When the directions are selected, drill a 10 cm 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.
Unit : mm
6
100
Wall
Indoor side Outdoor side
En-6
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)
ø25 mm
Ceiling panel
20 to 50 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-3. Installing Brackets
Install the bracket with nuts, spring washers.
Bracket (Right)
Bracket
Bracket (Left)
Special nut A
(Accessories)
Ceiling panel
Spring washer
(Field supply)
M10 Nut (Field supply)
M10 Nut (Field supply)
B-4. Installing indoor unit
Reset the hex bolts as shown in the fi gure
Unit : mm
Indoor unit
Hex bolt
8 to 13
Apply the indoor unit to the brackets.
Indoor unit
Bolt
Bracket
Now, securely tighten the hex bolts in both sides.
3.3.3. Barrier and RFM base removal and
installation
(1) Remove the barriers by removing the 4 fi xing screws
(2 screws each).
(2) Remove the RFM base by removing the 2 fi xing screws
and unhooking the 1 hook.
(3) After completing the work, install the barriers and RFM
base as they were originally.
RFM base
Fixing screw
(2 positions)
Barriers
Fixing screw
(2 positions)
Hook
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.
]
1
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.
• 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 available on the market.
En-7
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
1
4.2. Pipe requirement
CAUTION
• Refer to the Installation Manual of the outdoor unit
for description of the length 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).
1
4.3. Flare connection (pipe connection)
4.3.1. Flaring
• Use special pipe cutter and fl are tool exclusive for R410A.
(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 any 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.
Leakage of refrigerant may result if other fl are nuts are
used.
(4) Protect the pipes by pinching them or with tape to prevent
dust, dirt, or water from entering the pipes.
L
Check if [L] is fl ared uniformly
and is not cracked or scratched.
Die
Pipe
A
B
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 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
diameter [mm (in.)]
Width across flats
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
4.3.2. Bending pipes
The pipes are shaped by your hands or pipe bender. 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, making it diffi cult to bend or stretch them any
more. Do not bend or stretch the pipes more than 3 times.
CAUTION
• To prevent breaking of the pipe, avoid sharp bends.
• If the pipe is bent repeatedly at the same place, it will
break.
Width across
fl ats
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