Unit Wiring; Wiring - Fujitsu AS A004HCAH Series Installation Manual

5.3. Unit wiring

• Before attaching the cable to terminal block.
5.3.1 Power supply cable
Earth
(ground) cable
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram and connect after looping
it around the end of the cable.
(2) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screw-
driver that is too small, otherwise, the screw heads may be damaged and prevent the
screws from being properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the screws may break.
(5) Refer to the table for the terminal screw tightening torques.
(6) Do not fix 2 power supply cables with 1 screw.
Strip 25 mm
Screw with
special washer
Cable
Cable end (Loop)
Terminal block
When using solid core cables, do not use the attached ring terminal. If you use the solid
core cables with the ring terminal, the ring terminal's pressure bonding may malfunction
and cause the cables to abnormally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the cables using an appropriate tool so that the
cables do not come loose.
(3) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screw-
driver that is too small, otherwise, the screw heads may be damaged and prevent the
screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) Refer to the table for the terminal screw tightening torques.
(7) Do not fix 2 power supply cables with 1 screw.
Strip 10 mm
Screw with
special washer
Cable
Ring terminal
Terminal block
Use ring terminals and tighten the terminal screws to the specified torques, otherwise,
abnormal overheating may be produced and possibly cause heavy damage inside the
unit.
Terminal number
M4 screw (Power supply/L, N, Ground (earth))
5.3.2 Transmission and Remote controller cable
Transmission cable
20 mm
Shield
cable
(no film)
35 mm
• Connect remote controller and transmission cables as shown in figure below.
20 mm
40 mm
Loop
Screw with
special washer
Cable end (Loop)
Cable
WARNING
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
WARNING
Tightening torque
1.2 to 1.8 N·m (12 to 18 kgf·cm)
Remote controller cable
20 mm
GOOD
Different diameter
Tighten the terminal screws to the specified torques, otherwise, abnormal overheating
may be occurred and possibly cause serious damage inside the unit.
Tightening torque
M3 screw (Transmission /X1, X2, Ground (earth))
(Remote controller /Y1, Y2)
To peel the sheath from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the wire by overtightening the
screw. On the other hand, an under tightened screw can cause faulty contact, which will
lead to a communication failure.

5.4. Wiring

(1) Open the intake grille. Refer to "8. FRONT
PANEL REMOVAL AND INSTALLATION".
(2) Remove the wire cover and remove the
cable clamp.
(3) Connect the end of the connection cable
fully into the terminal block.
Symbol Connection cable
A L Power supply cable
B N
C Ground (earth) for
power supply cable
D Ground (earth) for
transmission cable,
wired remote control-
ler cable (if neces-
sary) and EV kit cable
(EEV external model
only)
E X1 Transmission cable
F X2
G Y1 Wired remote control-
ler cable (nonpolar)
H Y2
Cable clamp
(Clamp only the
power supply cable)
EV kit cable connecting (EEV external model only)
Ground (earth) wire of EV kit cable
EV kit cable
Connect
After connecting the EV kit cable, slide the tube (included with
the EV kit) over the connector to protect it.
Connect
Tube
When you attach the cable clamp, make sure that the cables are not jutting out from the
clamp or being pinched by the clamp.
PROHIBITED
Connect to 1 side
WARNING
0.5 to 0.6 N•m (5 to 6 kgf•cm)
CAUTION
Cable clamp
Screw
Wire cover
H
G
F
E
Y1 Y2
L N
C
X1 X2
D
Cable tie (Small)
Screw
A
B
En-8