Fujitsu AOYS09LDC, AOYS18LDC, ASYB18LDC, AOYS12LDC, ASYB12LDC Installation Manual
...
For authorized service personnel only.
(1) For the room air conditioner to operate satisfactory, install it as outlined in this installation manual.
(2) Connect the indoor unit and outdoor unit with the air conditioner piping and cords available standards parts. This
installation manual describes the correct connections using the standard accessories and the parts specified in
this installation manual.
(3) Have installation work done by authorized service personnel only.
(4) Never cut the power cord, lengthen or shorten the cord, or change the plug.
(5) Also do not use an extension cord.
(6) Plug in the power cord plug firmly. If the receptacle is loose, repair it before using the room air conditioner.
(7) Do not turn on the power until all installation work is complete.
WARNING
● 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 manual because it is used when the air conditioner is serviced or moved.
● The maximum length of the piping is 20 m. The maximum height difference of the piping is 15 m,
if the units are further apart than these, correct operation can not be guaranteed.
STANDARD ACCESSORIES
The following installation accessories are supplied.
Use them as required.
Name and Shape Q’ty Name and Shape Q’ty
Connection pipe assembly
Connection cord
Wall pipe
Decorative tape
Vinyl tape
Wall cap
Saddle
Drain hose
Tapping screws
Sealant
Name
Wall hook bracket
Remote
control
unit
Battery
Tapping screw (big)
Cloth tape
1
1
2
One set of following parts are necessary in istallation of this product.
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
cord.
1
8
2
Tapping screw (small)
Air-cleaning and
Deodorizing filter
1
NOTE:
In places where the outdoor temperature drops to 0˚C or
lower, the drain water may freeze and may stop up the
drain or cause other outdoor unit trouble. Therefore take
measures so that the drain water will not freeze and clog
the drain.
Decide the mounting position with the customer as follows:
1. INDOOR UNIT
(1) Install the indoor unit level on a strong wall which is not subject to
vibration.
(2) The inlet and outlet ports should not be obstructed : the air should
be able to blow all over the room.
(3) Install the unit near an electric outlet or special branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown
in (Fig. 2). Also install the unit where the filter can be removed.
2. OUTDOOR UNIT
(1) If possible, do not install the unit where it will be exposed to direct
sunlight. (If necessary, install a blind that does not interfere with
the air flow.)
(2) Do not install the unit where a strong wind blows or where it is very
dusty.
(3) Do not install the unit where people pass.
(4) Take your neighbors into consideration so that they are not dis-
turbed by air blowing into their windows or by noise.
(5) Provide the space shown in Fig. 2 so that the air flow is not blocked.
Also for efficient operation, leave open three of the four directions
front, rear, and both sides.
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 com-
bustible 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 can-
not reach the unit.
(4) Install the indoor unit on the wall where the height
from the floors more than 230 cm.
SELECTING THE MOUNTING
POSITION
[Indoor unit piping direction]
The piping can be connected in the five directions indicated by 1,
2, 3, 4, and 5 in (Fig. 1). When the piping is connected in
direction 2 or 5, cut along the piping groove in the side of the
front cover with a hacksaw.
When connecting the piping in direction 3, cut a notch in the thin
wall at the front bottom of the front cover.
INSTALLATION DIAGRAM OF
INDOOR AND OUTDOOR UNITS
Fig. 1
1 Rear outlet
2 Right
outlet
3 Bottom outlet
4 Left rear
outlet
5 Left
outlet
(Rear)
POWER
Installation instruction on the back.
Fig. 3
54 cm
32 cm
Drain hose
Outdoor unit bottom
Remote control
unit holder
1
Drain pipe
1
FRONT PANEL REMOVAL AND INSTALLATION
THE INTAKE GRILLE REMOVAL
(1) Open the intake grille.
(2) Pull down the knob.
(3) Lift the intake grille upward, until the axle at the top of the intake
grille is removed.
THE INTAKE GRILLE INSTALLATION
(1) The fixing axle of the intake grille is installed on the Panel.
(2) Lay down the intake grille.
THE FRONT PANEL REMOVAL
(1) Remove intake grille (Reference the intake grille removal.)
(2) Remove four screws.
(3) The thumb is hung on the lower part as shown in the figure,
and it pulls to the front, pushing [ ] mark , and bottom hooks
(two position) is removed from wall hook bracket.
(4) The front panel bottom is pulled to the front, and bottom hooks
is removed indoor unit.
(5) The front panel is pulled to the front, raising the upper surface,
and a front panel is removed.
THE FRONT PANEL INSTALLATION
(1) Firstly, fit the lower part of the front panel, and insert top and
bottom hooks. (Three top sides, six bottom sides)
(2) Four screws is attached.
(3) The intake grille is attached.
AIR CLEANING UNIT REMOVAL
(1) Open the intake grille, and then remove the right air filter.
(2) Pull the air cleaning unit grip in the direction of the arrow and remove
the unit.
AIR CLEANING UNIT INSTALLATION
(1) Open the intake grille, and then insert the dust collection unit into the
indoor unit.
(2) Install the right air filter, and then close the intake grille.
CAUTION
(1) The power source capacity must be the sum of the air conditioner current and the current of other electrical appliances. When the
current contracted capacity is insufficient, change the contracted capacity.
(2) When the voltage is low and the air conditioner is difficult to start, contact the power company the voltage raised.
WARNING
(1) The rated voltage of this product is 230 V AC 50 Hz.
(2) Before turning on the power, check if the voltage is within the
220 V -10 % to 240 V +10 % range.
(3) Always use a special branch circuit and install a special
receptacle to supply power to the room air conditioner.
(4) Use a circuit breaker and receptacle matched to the capacity of
the air conditioner.
(5) Do not extend the power cord.
(6) Perform wiring work in accordance with standards so that the
air conditioner can be operated safely and positively.
(7) Install a leakage circuit breaker in accordance with the related
laws and regulations and electric company standards.
Explain the following to the
customer in accordance with the operating manual:
(1) Starting and stopping method,
operation switching, temperature adjustment, timer, air flow
switching, and other remote
control unit operations.
(2) Air filter removal and cleaning,
and how to use the air louvers.
(3) Give the operating and installat-
ion manuals to the customer.
CUSTOMER GUIDANCE
INSERT
PULL
Grip
Fig. 4
Front panel
Bearing
Mounting shaft
Intake grille
Intake grille
Knob
Wall hook bracket
Front panel
Push
[ ] mark
Front panel
Screws
(4 position)
Push
Front panel
Top hook (two sides)
Top hole
(center)
Top holes
(two sides)
Indoor unit
Bottom hole
(six position)
Top hook
(center)
Bottom hooks
(six position)
CAUTION
Install the front panel and
INTAKE GRILLE securely. If installation is imperfect, the
front panel or INTAKE GRILLE
may fall off and cause injury.
Be sure that the top hole of the
front panel is hooked securely to
the hook of the base.
PUMP DOWN OPERATION (FORCED COOLING OPERATION)
To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal, recover
refrigerant by doing the cooling operation or forced cooling operation according to the following
procedure. (When the cooling operation cannot start in winter, and so on, start the forced cooling
operation.).
(1) Do the air purging of the charge hose by connecting the charging hose of gauge manifold to the charging
port of 3 way valve and opening the low-pressure valve slightly.
(2) Close the valve stem of 2 way valve completely.
(3) Start the cooling operation or following forced cooling operation.
When using the remote control unit
Press the TEST RUN button after starting the cooling operation by the remote control unit.
The operation indicator lamp and timer indicator lamp will begin to flash simultaneously during test run.
When using the MANUAL AUTO button of the indoor unit (The remote control unit is lost, and so on.)
Keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds.
(The forced cooling operation cannot start if the MANUAL AUTO button is not kept on pressing for more
than 10 seconds.)
(4) Close the valve stem of 3 way valve when the reading on the compound pressure gage becomes 0.05~0 Mpa
(0.5~0 kg/cm2).
(5) Stop the operation.
• Press the START/STOP button of the remote control unit to stop the operation.
• Press the MANUAL AUTO button when stopping the operation from indoor unit side.
(It is not necessary to press on keeping for more than 10 seconds.)
CAUTION
During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant
piping.
Do not remove the connection pipe while the compressor is in operation with 2 way or 3 way valve open. This
may cause abnormal pressure in the refrigeration cycle that leads to breakage and even injury.
Fig. 2
[INDOOR UNIT]
Remote
control unit
Connection Cord
Conform to Type245 IEC57
[OUTDOOR UNIT]
10 cm or over
60 cm or over
10 cm or over
20 cm or over
25 cm or
over
Tapping
screw
(small)
Remote
control unit
holder
6 cm or over
Wall hook bracket
5 cm or over
9 cm or over
150 cm or over
(Wall cap)
230 cm or over
5 cm or over
Dust collection unit
Air-cheaning and
Deodorizing filter
• Do not directly install it on
the ground, otherwise it
will cause failure.
Air filter
(B09LD/B12LD)
SPLIT TYPE ROOM AIR CONDITIONER
INSTALLATION MANUAL
(PART No. 9314989018-02)
The basic installation work procedures are the same as conventional refrigerant (R22) models.
However, pay careful attention to the following points:
(1) 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.
(2) 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 threads per inch.]
(3) 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.
(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.
This air conditioner uses new refrigerant HFC (R410A).
Special tools for R410A
Tool name
Gauge manifold
Charge hose
Vacuum pump
Gas leakage detector
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.
It is recommended the gauge with seals-0.1 to 5.3 MPa (-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) 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 40 mg/10m. 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 Table1.Never us copper pipes thinner than 0.8mm even
when it is available on the market.
Table 1 Thicknesses of Annealed Copper Pipes
Thickness (mm)
Nominal
diameter
1/4
3/8
Outer diameter
(mm)
6.35
9.52
R410A
0.80
0.80
[ref.] R22
0.80
0.80
(1) 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 breakage, injury,
etc.(Use the special R410A materials.)
(2) 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 breakage, injury, etc.
WARNING
CAUTION
When installing pipes shorter than 3m, sound of the outdoor unit will be transferred to the indoor unit, which will
cause large operating sound or some abnormal sound.
FINISHING
(1) Insulate between pipes.
● For rear, right, and bottom piping, overlap the connection pipe heat insulation and
indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap.
● For left and left rear piping, butt the connection pipe heat insulation and indoor unit
pipe heat insulation together and bind them with and vinyl tape so that there is no gap.
● For left and left rear piping, wrap the area which accommodates the rear piping housing
section with cloth tape.
● For left and left rear piping, bind the connection cord to the top of the pipe with vinyl
tape.
● For left and left rear piping, bundle the piping and drain hose together by wrapping
them with cloth tape over the range within which they fit into the rear piping housing
section.
(2) Temporarily fasten the connection cord along the connection pipe with vinyl tape. (Wrap
to about 1/3 the width of the tape from the bottom of the pipe so that water does not
enter.)
(3) Fasten the connection pipe to the outside wall with saddles, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealer so that rain
water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
Fig. 16
Fig. 15
Pipe
(Saddle)
(Outside wall cap)
(Sealer putty)
(Outdoors)
Pipe
Drain hose
Cloth tape
Wrap with cloth tape
Left piping
Connection cord
Pipe
Drain hose
For connection from the left rear
Connection cord
Wall pipe
Connection
pipe
Check the following:
GOOD
Lifted up
Saddle
Wave End in water
Overlap the insulation
Bind the pipes together so
that there is no gap.
Connection pipe
(heat insulation)
Vinyl tape
Wall
Indoor unit pipe
(heat insullation)
Drain hose
BAD
BAD BAD
Drain hose
P/N 9314989018-02
INDOOR UNIT
CUTTING THE HOLE IN THE WALL FOR THE CONNECTING PIPING
(1) Cut a 65 mm diameter hole in the wall at the position shown in (Fig. 5).
(2) When cutting the wall hole at the inside of the wall hook bracket, cut
the hole within the range of the left and right center marks 40 mm
below the wall hook bracket.
When cutting the wall hole at the outside of the wall hook bracket, cut
the hole at least 10 mm below over.
(3) Cut the hole so that the outside end is lower (5 to 10 mm) than the
inside end.
(4) Always align the center of the wall hole. If misaligned, water leakage
will occur.
(5) Cut the wall pipe to match the wall thickness, stick it into the wall cap,
fasten the cap with vinyl tape, and stick the pipe through the hole.
(The connection pipe is supplied in the installation set.) (Fig. 5)
(6) For left piping and right piping, cut the hole a little lower so that drain
water will flow freely. (Fig. 5)
INSTALLING THE WALL HOOK BRACKET
(1) Install the wall hook bracket so that it is correctly positioned horizon-
tally and vertically. If the wall hook bracket is tiled, water will drip to
the floor.
(2) Install the wall hook bracket so that it is strong enough to withstand
the weight of an adult.
● Fasten the wall hook bracket to the wall with 6 or more screws through
the holes near the outer edge of the bracket.
● Check that there is no rattle at the wall hook bracket.
FORMING THE DRAIN HOSE AND PIPE
WARNING
If the wall pipe is not used, the cord interconnecting
the indoor and outdoor units may touch metal and
cause electric leakage.
[Rear piping, Right piping, Bottom piping]
● Install the indoor unit piping in the direction of the wall hole and bind
the drain hose and pipe together with vinyl tape. (Fig. 7)
● Install the piping so that the drain hose is at the bottom.
● Wrap the pipes of the indoor unit that are visible from the outside
with decorative tape.
[For Left rear piping, Left piping]
Interchange the drain cap and the drain hose.
Fig. 5
Lower
Center mark
Fasten with
vinyl tape
(Wall cap)
(Wall pipe)
(Inside)
5 to 10
mm low
Wall (Outside)
65 mm dia. hole
Fig. 6
Fig. 7
Drain cap
Indoor unit
drain hose
Remove the drain cap by pulling
at the projection at the end of
the cap with pliers, etc.
Lower
10 mm
or over
65 mm dia. hole
For left outlet piping, cut off the
piping outlet cutting groove
with a hacksaw.
●
For left piping and left rear piping, align the marks on the wall hook
bracket and shape the connection pipe.
● Bend the connection piping at the bend radius of 70 mm or more and
install no more than 35 mm from the wall.
● After passing the indoor piping and drain hose through the wall hole,
hang the indoor unit on the hooks at the top and bottom of the wall
hook bracket.
[Installing the indoor unit]
● Hang the indoor unit from the hooks at the top of the wall hook bracket.
● Insert the spacer, etc. between the indoor unit and the wall hook
bracket and separate the bottom of the indoor unit from the wall.
Fig. 8
After hooking the indoor unit to the top hook, hook the fittings of the
indoor unit to the two bottom hooks while lowering the unit and
pushing it against the wall.
(1) Remove the cord clamp.
(2) Bend the end of the connection cord as shown in the figure.
(1) Match the terminal block numbers and connection
cord colors with those of the outdoor unit.
Erroneous wiring may cause burning of the electric parts.
(2) Connect the connection cords firmly to the terminal
block. Imperfect installation may cause a fire.
(3) Always fasten the outside covering of the connec-
tion cord with the cord clamp. (If the insulator is
chafed, electric leakage may occur.)
(4) Securely earth the power cord plug.
(5) Do not use the earth screw for an external connector.
Only use for interconnection between two units.
Fig. 10
CAUTION
(3) Connect the end of the connection cord fully into the terminal block.
(4) Fasten the connection cord with a cord clamp.
INDOOR UNIT WIRING
Connection cord
40 mm
12 mm
50 mm
12 mm
5 mm
5 mm
Cord clamp
(There is a
terminal block
inside.)
Screw
Connection cord
Cord clamp
Tab
Screw
Square hole
Insert the tab into the square hole of the
indoor unit and fasten with a screw.
1. Check if the piping connections are secure.
2. Check that the stems of 2-way valve and 3-way valve are closed
fully.
3. Connect the gauge manifold charge hose to the charging port
of the 3-way valve (side with the projection for pushing in the
valve core).
4. Open the low pressure side valve of the gauge manifold fully.
5. Operate the vacuum pump and start pump down.
6. Slowly loosen the flare nut of the 3-way valve and check if air
enters, then retighten the flare nut.
(When the flare nut is loosened the operating sound of the
vacuum pump changes and the reading of the compound
pressure gauge goes from minus to zero.)
OUTDOOR UNIT
OUTDOOR UNIT INSTALLATION
AIR PURGE
Always use a vacuum pump to purge the air.
Refrigerant for purging the air is not charged in the
outdoor unit at the factory.
Close the high pressure side valve of the gauge manifold fully and do
not operate it during the following work.
● Set the unit on a strong stand, such as one made of concrete blocks
to minimize shock and vibration.
● Do not set the unit directly on the ground because it will cause trou-
ble.
Connector cover removal
● Remove the tapping screws.
Installing the connector cover
(1) After inserting the two front hooks, then insert the rear hook.
(2) Tighten the tapping screws.
7. Pump down the system for at least 15 minutes, then check if the
compound pressure gauge reads -0.1 MPa (-76 cmHg, -1 bar).
8. At the end of pump down, close the low pressure side gauge of
the gauge manifold fully and stop the vacuum pump.
9. Slowly loosen the valve stem of the 3-way valve. When the
compound pressure gauge reading reaches 0.1-0.2 MPa,
retighten the valve stem and disconnect the charge hose
from the 3-way valve charging port.
(If the stem of the 3-way valve is opened fully before the
charge hose is disconnected, it may be difficult to disconnect
the charge hose.)
10. Fully open the valve stems of the 2-way valve and 3-way valve
using a hexagon wrench. (After the valve stem begins to turn,
turn it with a torque of less than 2.9 N
• m (30 kgf • cm) until it
stops turning.)
11. Firmly tighten the 2-way valve and 3-way valve blank cap and
the charging port cap.
Fig. 11
CAUTION
(1) Refrigerant must not be discharged into
atmosphere.
(2) After connecting the piping , check the joints for
gas leakage with gas leak detector.
OUTDOOR UNIT WIRING
(1) Remove the outdoor unit connector cover.
(2) Bend the end of the cord as shown in the figure.
(3) Connect the end of the connection cord fully into the terminal block.
(4) Fasten the sheath with a cord clamp.
(5) Install the connector cover.
(1) Match the terminal block numbers and connection
cord colors with those of the indoor unit.
Erroneous wiring may cause burning of the electric
parts.
(2) Connect the connection cords firmly to the terminal
block. Imperfect installation may cause a fire.
(3) Always fasten the outside covering of the connec-
tion cord with the cord clamp. (If the insulator is
chafed, electric leakage may occur.)
(4) Securely earth the power cord plug.
(5) Do not use the earth screw for an external connector.
Only use for interconnection between two units.
CAUTION
45mm
12mm
5mm
5mm
12mm
30mm
Fig. 13
Sheath
Cord clamp
Earth screw
Outdoor unit terminal blockIndoor unit terminal block
Connection cord
Earth screw
Earth screw
Table 4
Tightening torque
Blank cap 19.6 to 24.5 N
• m (200 to 250 kgf • cm)
Charging port cap 12.3 to 15.7 N
• m (125 to 160 kgf • cm)
TEST RUNNING
● Perform test operation and check items 1 and 2 below.
● For the test operation method, refer to the operating manual.
● The outdoor unit, may not operate, depending on the room temperature. In this case, press the test run button on the remote control unit while
the air conditioner is running, (Point the transmitter section of the remote control unit toward the air conditioner and press the test run button
with the tip of a ball-point pen, etc.)
● To end test operation, press the remote control unit START/STOP button.
(When the air conditioner is run by pressing the test run button, the OPERATION indicator lamp and TIMER indicator lamp will simultaneously
flash slowly.)
1. INDOOR UNIT
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do the air flow-direction louver operate normally?
(4) Is the drain normal?
2. OUTDOOR UNIT
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
CAUTION
(1) In order to align the drain hose and drain cap, be
sure to insert securely and vertically. Incline
insertion will cause water leakage.
(2) When inserting, be sure not to attach any material
besides water. If any other material is attached, it
will cause deterioration and water leakage.
(3) After removing drain hose, be sure not to forget
mounting drain cap.
(4) Be sure to fix the drain hose with tape to the bottom
of piping.
(5) Prevent drain water frozen under low temperature
environment.
When installing indoor unit's drain hose outdoors, necessary
measure for frost protection should be taken to prevent drain
water frozen.
• Under low temperature environment (when outdoor
temperature under 0 °C), after cooling operation is executed,
water in the drain hose could be frozen.
Once drain water is frozen, the drain hose will be blocked
and water leakage may be resulted for indoor unit.
CAUTION
Install the wall hook bracket horizontally and
perpendicularly.
Wall hook bracket
Center notch
Hook
Tapping screw
Wall hook bracket
String
Removal method of drain
hose
● Remove the screw at the left of
drain hose and pull out drain
hose.
Installation method of
drain hose
● Vertically insert the drain hose
toward the inside, so that the
drain fixture (blue) can
accurately align with the screw
hole around the drain cock.
After inserting and before
replacing, please reinstall and
fix the removed screws.
Right piping
Bind with vinyl tape
Indoor unit drain hose (bottom)
Pipe (top)
Rear piping
Bottom piping
CONNECTION
(1) Install the outdoor unit wall cap (supplied with the optional installation set
or procured at the site) to the wall pipe.
(2) Connect the outdoor unit and indoor unit piping.
(3) After matching the center of the flare surface and tightening the nut hand
tight, tighten the nut to the specified tightening torque with a torque wrench.
(Table 2)
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 flare nut onto the pipe and flare
the pipe with a flaring tool.
Insert the flare nut (always use the flare nut
attached to the indoor and outdoor units
respectively) onto the pipe and perform the
flare processing with a flare tool.
Use the special R410A flare tool, or the conventional (for R22) flare tool.
When using the conventional flare tool, always
use an allowance adjustment gauge and secure
the A dimension shown in table 3 .
CONNECTING THE PIPING
Check if [L] is flared uniformly
and is not cracked or scratched.
Fig. 9
Die
A
Pipe
WARNING
(1) Install the unit where it will not be tilted by more
than 5°.
(2) When installing the outdoor unit where it may ex-
posed to strong wind, fasten it securely.
Connection cord
Cord clamp
Control box
Fig. 14
Connection cord
Connection cord wiring
Run the connection cord to the rear of the outdoor unit within the A
range of the arrows shown in the figure.
(The connector cover becomes difficult to install.)
Connection pipe
(6.35 mm dia.)
Connection pipe
(9.52 mm dia.)
Align the marks.
Bend (R70) with
a pipe bender
Top hooks
Indoor unit (Fitting) Bottom hooks
Wall hook
bracket
Indoor unit
Wall hook bracket
(Spacer)
Table 2 Flare nut tightening torque
Tighten with two wrenches.
Torque
wrench
Wrench (fixed)
Flare nut
Indoor unit pipe
Connection pipe
To prevent gas leakage, coat the flare
surface with refrigerator oil.
Table 3 Pipe outside diameter
Flare nut
6.35 mm dia.
9.52 mm dia.
Tightening torque
15.7 to 17.6 N
• m
(160 to 180 kgf
• cm)
29.4 to 41.1 N
• m
(300 to 420 kgf
• cm)
Tightening torque standard
(using a 20 cm wrench)
Wrist strength
Arm strength
A (mm)
Pipe outside
diameter
ø 6.35 mm (1/4”)
ø 9.52 mm (3/8”)
Flash tool for
R410A, clutch type
0 to 0.5
0 to 0.5
Conventional (R22) flare tool
Clutch type
1.0 to 1.5
1.0 to 1.5
Wing nut type
1.5 to 2.0
1.5 to 2.0
CAUTION
(1) Fasten a flare nut with a torque wrench as instructed in this manual. If
fastened too tight, the flare nut may be broken after a long period of time
and cause a leakage of refrigerant.
(2) During installation, make sure that the refrigerant pipe is attached firmly
before you run the compressor. Do not operate the compressor under the
condition of refrigerant piping not attached properly with 2-way or 3-way
valve open. This may cause abnormal pressure in the refrigeration cycle
that leads to breakage and even injury.
● Be sure to install around the drain hose connector.
● As the screw is inside, be sure to use screwdriver treated with
magnet.
Screw Drain hose
Drain fixture
(blue)
Screw hole
Drain hose
Screw
Drain cock
Drain fixture (blue)
Fig. 12
Additional charge
Refrigerant suitable for a piping length of 15 m is charged in the outdoor
unit at the factory.
When the piping is longer than 15 m, additional charging is necessary.
For the additional amount, see the table below.
Pipe length
Additional refrigerant
Table 5
15 m
None
20 m
100 g
Tapping screw
Rear hooks
Connector cover
Front hooks
CAUTION
(1)
When adding refrigerant, add the refrigerant from
the charging port at the completion of work.
(2) The maximum length of the piping is 20 m. If
the units are further apart than this, correct
operation can not be guaranteed.
Between 15 m and 20 m, when using a connection pipe other than
that in the table, charge additional refrigerant with 20g/1 m as the
criteria.
Control box cover
Transmitter section
Test run button
Fig. 17
Wall hook bracket
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