Fujitsu SPLIT TYPE AIR CONDITIONER Installation Manual page 12

After connecting the connection cord, install cabinet A.
Fig. 41
Cable clip
Coupler holder
Binder
■EXAMPLE OF INCORRECT WIRING
(Cooling model)
The following are examples of improper
wiring that results in system misopera-
tion. You should confirm that you have
wired the units correctly before begin-
ning the test run.
Fig. 42
Problem 1
• Short circuit will occur after approx.
3 minutes and the power circuit fuse blows.
Disconnect
(A)
switch
Grounding line
Indoor unit Outdoor unit
Problem 2
• Air conditioner will not operate.
Disconnect
(B)
switch
Grounding line
Indoor unit Outdoor unit
Problem 3
• Compressor will not start; only indoor unit will operate.
Disconnect
(D)
switch
Grounding line
Indoor unit
Outdoor unit
Connection cord
(Indoor unit and out-
door unit connec-
tion cord)
Outdoor unit
4" (100 mm)
or less
Cabinet D
Disconnect
(C)
switch
Grounding line
Indoor unit Outdoor unit
Disconnect
(E)
switch
Grounding line
Indoor unit
Outdoor unit
NOTE
• Connector trade size for this unit is 1/2". The con-
nector can be bought at a hardware store. Refer to
"How to connect wiring to the terminals" for
instructions on connecting depending on the wire
type you are using.
• The fuse located in the outdoor unit provides
power supply protection and may blow when
power is applied if the system has been incorrectly
wired.
10. POWER
(1) The rated voltage of this product is
230/208V A.C. 60Hz.
(2) Before turning on verify that the volt-
age is within the 187 to 253V range.
(3) Always use a special branch circuit and
install a special receptacle to supply
power to the air conditioner.
(4) Use a circuit breaker and receptacle
matched to the capacity of the air
conditioner.
(5) The circuit breaker is installed in the
permanent wiring. Always use a cir-
cuit that can trip all the poles of the
wiring and has an isolation distance
of at least 3 mm between the con-
tacts of each pole.
(6) Perform wiring work in accordance
with standards so that the room air
conditioner can be operated safely
and positively.
(7) Install a leakage circuit breaker in
accordance with the related laws
and regulations and electric compa-
ny standards.
(1) The power source capacity must be
the sum of the air conditioner curent
and the current of other electrical
appliances. When the current carry-
ing capacity is insufficient, change
the circuit capacity.
(2) When the voltage is low and the air
conditioner is difficult to start, con-
tact the power company to have the
voltage raised.
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