Fujitsu 9370083002 User manual

En-1
English
Cassette Type (VRF System)
Refrigerant
R407C&R22
INSTALLATION INSTRUCTION SHEET
(PART NO. 9370083002)
This air conditioner uses R407C and R22.
For authorized service personnel only.
WARNING! This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of
the user.
CAUTION! This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the
user, or damage to property.
WARNING
1For the air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet.
2Connect the indoor unit and outdoor unit with the air conditioner piping and cords available from our stand-
ard parts. This installation instruction sheet describes the correct connections using the installation set
available from our standard parts.
3Installation work must be performed in accordance with national wiring standards by authorized personnel
only.
4If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with
a flame, it produces a toxic gas.
5Do not turn on the power until all installation work is complete.
6When installing or moving the air conditioner, use care not to charge it with the wrong refrigerant (such as
R407C or R22).
CAUTION
Observe the following precautions when using R407C refrigerant.
• Do not use mineral oil on flared part.
Prevent mineral oil from getting into the system as this would reduce the lifetime of the unit.
• Never use piping which has been used for previous installations. Only use parts that are delivered with the
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.
Page
CONTENTS .................................................................... 1
SAFTY PRECAUTIONS .................................................. 1
STANDARD PARTS ........................................................ 2
SELECTING THE MOUNTING POSITION ..................... 2
INSTALLATION PROCEDURE ....................................... 3
1. INDOOR UNIT INSTALLATION .................................. 3
2. INSTALLING DRAIN PIPE .......................................... 3
3. CONNECTION PIPE REQUIREMENT ....................... 4
Page
4. CONNECTING THE PIPING....................................... 4
5.
INSTALLING THE COUPLER HEAT INSULATION ......... 5
6. ELECTRICAL REQUIREMENT................................... 6
7. ELCTRICAL WIRING .................................................. 6
8. CIRCUIT BOARD SETTING . ..................................... 8
9. GRILLE INSTALLATION ........................................... 10
10. TEST OPERATION ................................................. 13
11. AN ERROR DISPLAY .............................................. 14

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STANDARD PARTS
The following installation parts are supplied. Use them as required.
Name and Shape
Coupler heat
insulation
Special nut A
(large flange)
Special nut B
(small flange)
Q’ty
2
4
4
Name and Shape
Bolt
Washer
Blower cover insulation
Q’ty
4
4
2
INDOOR UNIT ACCESSORIES GRILLE ACCESSORIES
Name and Shape
Template
Binder
Q’ty
1
2
SELECTING THE MOUNTING POSITION
•Leave the space specified in Fig. 1 so that the air from the blower
will cover the entire room.
•Install the indoor unit on a place having a sufficient strength so
that it withstands against the weight of the indoor unit.
•A place from where drainage can be extracted outdoors easily.
Fig. 1
Strong and durable ceiling
250 mm (9-3/8”)
or more
1,000 mm (39”)
or more
Obstruction
Service space
1,000 mm (39”)
or more
WARNING
1Never install in a room where there is the poten-
tial of leaking flammable gas. A spark could ig-
nite the gas and cause an explosion or fire.
2Avoid installing in a location with high tempera-
ture.
Fig. 2
100 mm (4”)
or more
100 mm (4”)
or more
100 mm (4”)
or more
1,000 mm (39”)
or more
(4 directions) (3 directions) (2 directions) (2 directions)
Pipe
•The blower direction can be set for two directions or three di-
rections. When using two-direction or three-direction blower, fol-
low Fig. 2 for the blower direction and space.
•The method for changing the blower direction is shown in the
“9. GRILLE INSTALLATION” section of the “INSTALLATION
PROCEDURE”.

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INSTALLATION PROCEDURE
Install the air conditioner as follows.
1. INDOOR UNIT INSTALLATION
(1) Make the holes for installing in the ceiling. (Fig. 4)
(2) Install the hanging bolts (M10), refer to the position in Fig. 3.
(3) Install special nut A, then special nut B onto the hanging bolt (Fig. 4).
(4) Raise the body and mount its hooks onto the hanging bolt between the special nuts.
(5) Turn special nut B to adjust the height of the body.
Fig. 3
(Grille measurement)
650 mm (25-15/32”)
(Hanging bolt position)
400 mm (15-3/4”)
(Hanging bolt position)
606 mm (23-27/32”)
Fig. 4
131 mm (5-5/32”)
111 mm
(4-3/8”)
46 mm (1-27/32”)
86 mm (3-3/8”)
41 mm (1-9/16”)
250 mm (9-27/32”)
(Ceiling opening measurement)
(600 mm ( 23-5/8”))
Drain pipe
40 mm (1-9/16”)
Ceiling
Special nut A
Hook
Special nut B
Hanging bolt
30 mm
or more
15 mm (19/32”)
WARNING
1Perform final tightening by tightening the double nut firmly. The product may fall if not installed properly.
2Using a level, or vinyl hose filled with water, fine adjust so that the body is level.
Max. 400 mm
(15”)
Rise
Trap
Supporter
1.5 to 2 m
(5 to 6.5 ft)
Air bleeding
150 mm (6”) or less
2. INSTALLING DRAIN PIPE
CAUTION
Install the drain pipe in accordance with the instructions in this installation instruction sheet and keep the area
warm enough to prevent condensation. Problems with the piping may lead to water leaks.
Use general hard polyvinyl chloride pipe (VP25) [outside diam-
eter 32 mm (1-1/4”)] and connect it with adhesive (polyvinyl chlo-
ride) so that there is no leakage.
Always heat insulate the indoor side of the drain pipe.
•Do not provide a rise, trap and air bleeding.
•Provide a downward gradient (1/50 to 1/100).
•Provide supports when long pipes are installed.
•When desiring a high drain pipe height, raise it up to 400 mm
(15”) or less from the ceiling within a range of 150 mm (6”) from
the body. A rise dimension over this range will cause leakage.
Gradient 1/50 to 1/100
Fig. 5

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3. CONNECTION PIPE REQUIREMENT
(1) Connected to outdoor unit
Table 1 unit : mm
Capacity of Suction Discharge
outdoor unit Gas Pipe Gas Pipe Liquid Pipe
90 ø28.58 (1.2) ø19.05 (1.0) ø12.7 (0.8)
( ) : thickness
(2) Connected between two immediately adjacent refrigerant branch kits
Table 2 unit : mm
Total capacity Suction Discharge
of indoor unit Gas Pipe Gas Pipe Liquid Pipe
Less than 30 ø15.88 (1.0) ø12.7 (0.8) ø9.53 (0.8)
31 or more to 60 ø19.05 (1.0) ø15.88 (1.0) ø9.53 (0.8)
61 or more ø28.58 (1.2) ø19.05 (1.0) ø12.7 (0.8)
( ) : thickness
(3) Connected to indoor unit
Table 3 unit : mm
Capacity of
indoor unit Gas Pipe Liquid Pipe
7, 9 ø9.53 (0.8) ø6.35 (0.8)
12, 14 ø12.7 (0.8) ø6.35 (0.8)
18, 20, 24, 25 ø15.88 (1.0) ø6.35 (0.8)
30 ø15.88 (1.0) ø9.53 (0.8)
36, 45, 54, 60 ø19.05 (1.0) ø9.53 (0.8)
( ) : thickness
* Capacity: The number displayed on the model name for the indoor and outdoor units.
•Use pipe with water-resistant heat insulation.
•The discharge gas pipe is only connected on heat recovery models.
4. CONNECTING THE PIPING
1. FLARE PROCESSING
(1) Cut the connection pipe with pipe cutters so that the pipe is
not deformed.
(2) Holding the pipe downwards so that cuttings cannot enter the
pipe and remove the burrs.
(3) Remove the flare nut from the indoor unit pipes and assemble
as shown in Table 4 and insert the flare nut onto the pipe, and
flare with a flaring tool.
(4) Check if the flared part “L”(Fig. 6) is spread uniformly and that
there are no cracks.
Table 4
Pipe
Liquid pipe
(ø6.35 mm)
Gas pipe
(ø9.53 mm)
Gas pipe
(ø12.7 mm)
Gas pipe
(ø15.88 mm)
Width across flats
17 mm
22 mm
24 mm
24 mm
Fig. 6
Width across flats
L dimension
1.4 to 1.7 mm
1.8 to 2.0 mm
1.9 to 2.2 mm
2.2 to 2.4 mm

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2. CONNECTION PIPES
When the flare nut is tightened properly by your hand, hold the
body side coupling with a separate spanner, then tighten with a
torque wrench (Fig. 8, Table 5).
Fig. 7
Indoor unit
Liquid pipe
Gas pipe
Holding spanner
Body side
Torque wrench
Fig. 8
Table 5: Flare nut tightening torque
Tightening Torque
150 to 220 kgf·cm (14.7 to 19.6 N·m)
310 to 350 kgf·cm (30.4 to 34.3 N·m)
500 to 550 kgf·cm (49.0 to 53.3 N·m)
750 to 800 kgf·cm (73.5 to 78.4 N·m)
Flare nut
Liquid pipe (ø6.35 mm)
Gas pipe (ø9.53 mm)
Gas pipe (ø12.7 mm)
Gas pipe (ø15.88 mm)
CAUTION
1Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper, the flare
nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be damaged.
2Do not remove the flare nut from the indoor unit pipe until immediately before connecting the connection
pipe.
3Hold the torque wrench at its grip, keeping it in the right angle with the pipe as shown in Fig. 8, in order to
tighten the flare nut correctly.
5. INSTALLING THE COUPLER HEAT INSULATION
After checking for gas leaks, insulate by the coupler heat insulation around the gas pipe and liquid pipe of the indoor unit.
Fig. 9
CAUTION
Must fit tightly against body without any gap.
Body
Coupler heat
insulation
Be sure to overlap
the insulation
No gap
Coupler heat insulation

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6. ELECTRICAL REQUIREMENT
Table 6
Power supply Maximum 2.5
cord (mm2)Minimum 1.5
Transmission Maximum 1.25
cord (mm2)Minimum 0.75
Remote control Maximum 1.25
cord (mm2)Minimum 0.75
Fuse capacity (A) 20
Shield cord
(LONWORKS
compatible part)
H07RN-F or equivalent
Sheathed vinyl cord or
cable
7. ELECTRICAL WIRING
WARNING
1Before starting work, check that power is not being supplied to the indoor unit.
2Connect the connection cord firmly to the terminal board. Imperfect installation may cause a fire.
3Always fasten the outside covering of the connection cord with the cord clamp. (If the insulator is chafed,
electric leakage may occur.)
4Always connect the ground wire.
Remove the control box cover and install the connection cord (Figs. 10 and 11).
Fig. 10
TRANS
MISSION
POWER
SUPPLY
TO REMORTE CONTROL UNIT
•When the two wires are attached.
Screw with
special washer
Round terminal
Terminal
board
Wire
Terminal block
(For solid wire only)
(Solid wire)
Strip 25 mm
(15/16”)
Insulation
Loop
(Strand wire) Round terminal
Strip 10 mm
(3/8”)
Clamp
Remote
control cord
Cord clamp
Transmission
cord
RB unit cord
(Heat recovery
model only)
Power supply cord
Clamp
Clamp
Control
box cover
different diameter connect to one side
•Befor attaching the wire to terminal block.
Binder Binder

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Fig. 11
RB unit cord
(Heat recovery model only)
Power supply cord
Transmission
cord
Remote
control cord
380-415 V 3ø50 Hz
220-240 V 1ø50 Hz
Remote controller
Terminal board
Note that the arrangement
of the terminal board may
vary from model to model.
Indoor unit
Outdoor unit
Refrigerant branch unit
(Heat recovery model only)
Remote
controller
WARNING
1The rated voltage of this product is 220-240 V A.C. 50 Hz.
Before turning on verify that the voltage is within the 198 V to 264 V range.
2Always use a special branch circuit and install a special receptacle to supply power to the air conditioner.
3Use a circuit breaker and receptacle matched to the capacity of the air conditioner.
4 Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively.
5Install a leakage circuit breaker in accordance with the related laws and regulations and electric company
standards.
6Never connect other electrical equipment to the power supply for this system.
CAUTION
1Use care to wire properly. (Miss-wiring will result in damage.)
2Never bundle the power supply cord, transmission cord and remote controller cord together. Bundling
these cords together will cause misoperation.
3For transmission cord, only ground one side of the ground wire.
4The total length of the transmission cord should not exceed 500 meters. Note that the total length of the
transmission cord can be extended to 2,000 meters if the optional signal amplifier is used.
5The 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.
6When the voltage is low and the air conditioner is difficult to start, contact the power company the voltage
raised.

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8. CIRCUIT BOARD SETTING
Set the switch on the circuit board.
(1) Indoor unit addresses
Rotary switch (SW5) - - - Factory setting “0”
When connecting multiple indoor units to one refrigerant system, set the address at SW5 in sequence from 0.
(2) Refrigerant circuit address
Rotary switch (SW7) - - - Factory setting “0”
Rotary switch (SW8) - - - Factory setting “0”
In the case of multiple refrigerant systems, set SW7 and SW8 as shown in the Table 7 for each refrigerant system. Set to the same
refrigerant circuit address as the outdoor unit.
Example: When SW8 is set to “1”and SW7 is set to “14”, the refrigerant circuit address will be “30”.
Table 7
Refrigerant Rotary Refrigerant Rotary Refrigerant Rotary Refrigerant Rotary Refrigerant Rotary
circuit
Switch Setting circuit Switch Setting circuit Switch Setting circuit Switch Setting circuit Switch Setting
address INDOOR UNIT address INDOOR UNIT address INDOOR UNIT address INDOOR UNIT address INDOOR UNIT
SW8 SW7 SW8 SW7 SW8 SW7 SW8 SW7 SW8 SW7
0 0020144028603128050
1 0121154129613138151
2 02221642210623148252
3 03231743211633158353
4 0 4 24 1 8 44 2 12 64 4 0 84 5 4
5 0 5 25 1 9 45 2 13 65 4 1 85 5 5
6 0 6 26 1 10 46 2 14 66 4 2 86 5 6
7 0727111472156743 8757
8 0 8 28 1 12 48 3 0 68 4 4 88 5 8
9 0 9 29 1 13 49 3 1 69 4 5 89 5 9
10 0 10 30 1 14 50 3 2 70 4 6 90 5 10
11 0 11 31 1 15 51 3 3 71 4 7 91 5 11
12012322052347248 92512
13013332153357349 93513
14 0 14 34 2 2 54 3 6 74 4 10 94 5 14
15015352355377541195515
16 1 0 36 2 4 56 3 8 76 4 12 96 6 0
17 1 1 37 2 5 57 3 9 77 4 13 97 6 1
18 1 2 38 2 6 58 3 10 78 4 14 98 6 2
19 1 3 39 2 7 59 3 11 79 4 15 99 6 3

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(3) Remote controller address
Rotary switch (SW9) - - - Factory setting “0”
When connecting multiple indoor units to one standard wired remote controller, set the address at SW9 in sequence from 0.
Fig. 12
Example If 4 indoor units are connected.
Remote
controller
(4) Model select switch
SW4 should be checked.
Table 8
Capacity 18 14 12 9 7
SW4-1 OFF ON OFF ON OFF
SW4-2 OFF ON ON OFF OFF
SW4-3 ON OFF OFF OFF OFF
SW4-4 OFF OFF OFF OFF OFF
CAUTION
Do not set any switches other than those specified in this sheet.The air conditioner may not operate correctly
if any switches other than those specified are changed.
R-SW9
0
R-SW9
1
R-SW9
2
R-SW9
3
Indoor unit Indoor unit Indoor unitIndoor unit

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A
A
9. GRILLE INSTALLATION
1. INSTALLING BLOWER COVER INSULATION (IN CASE OF 2 OR 3 OUTLET DIRECTION)
•Install the blower cover insulation only when the outlet direction
is changed to 2 or 3 direction.
•Two blower cover insulations are packed with the grille assem-
bly.
•Install the blower cover insulation at the diffuser position shown
in Fig. 13. At this time, use pipe side as the criteria.
Fig. 13
2. INSTALLING GRILLE ASSEMBLY TO BODY
Hang the grille assembly on the wires attached to the indoor unit as shown in Fig. 14.
Fig. 14
3 direction
Fit the blower cover
insulation.
Blower cover
insulation A-A Section view
Wire Wire hook
Motor cover assembly
Wire
Wire
hook
Example
Wire hook
CAUTION
•Do not install the blower cover insulation at the diffuser position on pipe side.
•Do not set the 2-way outlet as shown in the figure to the right. Setting in this
manner will cause performance problems.
Pipe
Pipe side
Pipe side
Do not
install here. Pipe
Main
body