Fujitsu V09LA, V12LA Installation Manual
(V09LA)
(V12LA)
ACCESSORY Q’ty
Drain pipe
1
Decide the mounting position with the customer as follows:
(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
outdoor units and install positively so that the units will
not topple or fall.
SELECTING THE MOUNTING
POSITION
INSTALLATION DIAGRAM OF
OUTDOOR UNIT
Fig. 2
54 cm
32 cm
CAUTION
(1) Do not install where there is the danger of combustible gas
leakage.
(2) Do not install near heat sources.
(3) 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 meas-
ures so that the drain water will not freeze and clog the drain.
(4) In the area with heavy snowfall, if the intake and outlet of
outdoor unit is blocked with snow, it might become difficult
to get warm and it is likely to cause of the breakdown. Please
construct a canopy and a pedestal or place the unit on a high
stand (local configured).
(5) If children under 10 years old may approach the unit, take
preventive measures so that they cannot reach the unit.
Drain hose
Outdoor
unit bottom
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
5 cm or over
INDOOR UNIT
This air conditioner uses new refrigerant HFC (R410A).
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.
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
CAUTION
WARNING
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) Do not use an extension cord.
(5) 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.
OUTDOOR UNIT INSTALLATION
● 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 trouble.
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.
Fig. 1
Tapping screw
Rear hooks
Front hooks
Connector cover
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.
Installation instruction on the back.
WARNING
(5) Do not extend the power supply cord and connection 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.
Connection cord
Cord clamp
Control box
Connection cord
Control box cover
12
3
LN
12
3
4
Outdoor unit terminal blockIndoor unit terminal block
Connection cord
Earth screw Earth screw
20mm
12mm
5mm
5mm
12mm
20mm
Cord clamp
Earth
screw
20mm
12mm
5mm
5mm
12mm
20mm
(3) Always fasten the outside covering of the connection
cord with the cord clamp. (If the insulator is chafed,
electric leakage may occur.)
(4) Securely earth the power cord.
(5) Do not use the earth screw for an external connector.
Only use for interconnection between two units.
CAUTION
2
) 1.5
2
) 1.5
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 .
BENDING PIPES
(1) When bending the pipe, be careful not to crush it.
(2) To prevent breaking of the pipe, avoid sharp bends.
Bend the pipe with a radius of curvature of 70mm or over.
(3)
If the copper pipe is bend the pipe or pulled to often, it will become stiff.
Do not bend the pipes more than three times at one place.
CONNECTING THE PIPING
Check if [L] is flared uniformly
and is not cracked or scratched.
Fig. 5
Die
A
Pipe
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.
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 3way 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.)
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.
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.
CAUTION
(1)
Refrigerant must not be discharged into atmosphere.
(2) After connecting the piping , check the joints for gas
leakage with gas leak detector.
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
Fig. 6
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)
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.
CAUTION
Table 2 Flare nut size and tightening torque
Table 3 Pipe outside diameter
Flare nut
6.35 mm dia.
9.52 mm dia.
A (mm)
Pipe outside
diameter
ø 6.35 mm (1/4”)
ø 9.52 mm (3/8”)
Flare 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.
Earth
screw
Connection Cord Power supply Cord
12
3
NL
Power supply Cord
Diameter (mm) ✕ Torgue (N•m)
7 ✕ 14 ~ 18
22 ✕ 34 ~ 42
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