Fujitsu AOY30LMAW4 Installation Instruction Sheet page 2

5. VACUUM
CAUTION
(1) Remove the cap, and connect the gauge manifold and the vacuum
1 Do not purge the air with refrigerants, but use a vacuum
pump to the charging valve by the service hoses.
pump to vacuum the installation! There is no extra re-
(2) Vacuum the indoor unit and the connecting pipes until the pressure
frigerant in the outdoor unit for air purging!
gauge indicates –0.1 MPa (–76 cmHg).
(3) When –0.1 MPa (–76 cmHg) is reached, operate the vacuum pump
2 Use a vacuum pump and gauge manifold and charg-
for at least 30 minutes.
ing hose for R410A exclusively. Using the same vacuum
(4) Disconnect the service hoses and fit the cap to the charging valve to
for different refrigerants may damage the vacuum pump
the specified torque.
or the unit.
(5) Remove the blank caps, and fully open the spindles of the 2-way
and 3-way valves with a hexagon wrench [Torque: 6~7 N·m (60 to
70 kgf·cm)].
6. ADDITIONAL CHARGE
(6) Tighten the blank caps of the 2-way valve and 3-way valve to the
specified torque. Refrigerant suitable for a total piping length of 50 m is charged in the
outdoor unit at the factory.
Tightening torque
When the piping is longer than 50 m, additional charging is necessary.
6.35 mm (1/4 in.) 20 to 25 N·m (200 to 250 kgf·cm) For the additional amount, see the table below.
9.52 mm (3/8 in.)
20 to 25 N·m (200 to 250 kgf·cm)
Total piping 50 m 60 m
Blank cap 12.70 mm (1/2 in.)
25 to 30 N·m (250 to 300 kgf·cm) length (164 ft) (197 ft)
15.88 mm (5/8 in.) 30 to 35 N·m (300 to 350 kgf·cm) Additional
250 g
None
refrigerant
19.05 mm (3/4 in.) (8.8 oz)
35 to 40 N·m (350 to 400 kgf·cm)
Charging port cap 10 to 12 N·m (100 to 120 kgf·cm)
CAUTION
1 When moving and installing the air conditioner, do not
mix gas other than the specified refrigerant (R410A)
inside the refrigerant cycle.
Hexagon wrench
2 When charging the refrigerant R410A, always use an
electronic balance for refrigerant charging (to meas-
Blank cap ure the refrigerant by weight).
3 When charging the refrigerant, take
into account the slight change in the
Charging port Spindle
composition of the gas and liquid
Service hose phases, and always charge from the
with valve core liquid phase side whose composi-
Cap
tion is stable.
Service hose
4 Add refrigerant from the charging valve after the com-
with valve core
pletion of the work.
Service hose 5 If the units are further apart than the maximum pipe
with valve core length, correct operation can not be guaranteed.
Service hose
7. GAS LEAKAGE INSPECTION
with valve core
CAUTION
1 After connecting the piping, check the all joints for gas
leakage with gas leak detector.
Gauge manifold
2 When inspecting gas leakage, always use the vacuum
pump for pressure. Do not use nitrogen gas.
Lo Hi
Vacuum pump
Service hose
PART NO. 9374872015
3 4
POWER
WARNING
1 The rated voltage of this product is 220-240 V A.C. 50 Hz. 1 Before starting work, check that power is not being
supplied to the indoor unit and outdoor unit.
2 Before turning on verify that the voltage is within the
198 V to 264 V range.
2 Match the terminal board numbers and connection
cord colors with those of the outdoor unit.
3 Always use a special branch circuit and install a spe-
Erroneous wiring may cause burning of the electric
cial receptacle to supply power to the air conditioner.
parts.
4 Use a special branch circuit breaker and receptacle
3 Connect the connection cords firmly to the terminal
matched to the capacity of the air conditioner.
(Install in accordance with standard.) board. Imperfect installation may cause a fire.
4 Always fasten the outside covering of the connection
5 Perform wiring work in accordance with standards so
that the air conditioner can be operated safely and posi- cord with the cord clamp. (If the insulator is chafed,
70 m
tively. electric leakage may occur.)
(230 ft)
500 g 25 g/m 6 Install a leakage special branch circuit breaker in ac-
5 Always connect the ground wire.
(17.6 oz) (0.9 oz/ft) cordance with the related laws and regulations and elec-
tric company standards.
HOW TO CONNECT WIRING TO THE
CAUTION
TERMINALS
1 The power source capacity must be the sum of the air
conditioner current and the current of other electrical
A. For solid core wiring (or F-cable)
appliances. When the current contracted capacity is in-
sufficient, change the contracted capacity.
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 25 mm to expose the solid wire.
2 When the voltage is low and the air conditioner is diffi-
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
cult to start, contact the power company the voltage
board.
raised.
(3) Using pliers, bend the solid wire to form a loop suitable for the
Gas terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and
R410A
tighten securely with the terminal screw using a screwdriver.
B. For strand wiring
Liquid
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 10 mm to expose the strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using a round terminal fastener or pliers, securely clamp a round
terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the
terminal screw using a screwdriver.
Wire
ELECTRICAL WIRING 1. CONNECTION DIAGRAMS
OUTDOOR UNIT
Connection cord
1
WARNING
2
D
3
Connection cord
1
2
C
3
Connection cord
Power cord
1
2
B
220-240V 3
50 Hz · 1ø
L
N POWER Connection cord
1
2
A
3
EARTH
2. CORD PREPARATION
Keep the earth wire longer than the other wires.
Power supply cord
Earth wire
Connection cord
Earth wire
3. OUTDOOR UNIT
(1) Service cover removal
• Remove the two mounting screws.
• Remove the service cover by pushing downwards.
Round
A. Solid wire B. Strand wire
terminal
Loop
Insulation
Screw with
special washer
Screw with
Round terminal special washer
Terminal Round
board
terminal
Wire
Terminal block
Direction of the service
panel removal
Service cover
(2) Connect the power supply cord and the connection cord to terminal. (4) Be sure to seal the holes when applying the putty.
(3) Fasten the power supply cord and connection cord with cord clamp. Place the cords side by side. (Do not overlap the cords.)
INDOOR UNIT
1
2
D
3
1
2 C
3
1
2
B
3
Power cord
1
2 A
3 UNIT D connection cord
UNIT C connection cord
UNIT B connection cord
UNIT A connection cord
(5) Put the service cover and valve cover back after completion of the
work.
UNIT A UNIT B UNIT C UNIT D
Hook
(3 places)
5
TEST RUNNING
The test run method may be different for each indoor unit that is con-
nected. Refer to the installation instruction sheet included with each in-
door unit.
Putty
6
CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating
manual:
(1) Starting and stopping method, operation switching, temperature
adjustment, timer, air flow adjustment, and other remote control unit
operations.
(2) Air filter removal and cleaning.
(3) Give the operating manual and installation instruction sheet to the
customer.