Fujitsu ABYA12-24LBTH Installation Manual page 12

Vrf system indoor unit floor / ceiling type
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B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the
fi gure 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 specifi ed 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 screwdriver 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) See the table for the terminal screw tightening torques.
(7) Please do not fi x 2 power supply cables with 1 screw.
Screw with
special washer
Ring terminal
Cable
Terminal block
• Use ring terminals and tighten the terminal screws to the
specifi ed torques, otherwise, abnormal overheating may
be produced and possibly cause heavy damage inside
the unit.
Tightening torque
M4 screw
(Power supply/L, N, GND)
En-12
Ring terminal
Sleeve
Screw with
special
washer
Cable
WARNING
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
6.3.2. Transmission and Remote controller cable
Shielded
cable
(No fi lm)
• Connect remote controller and transmission cables as shown
in Fig. B.
• When the 2 cables are attached.
Fig. B
Ring
terminal
OK
• Tighten the terminal screws to the specified torques,
otherwise, abnormal overheating may be produced and
possibly cause heavy damage inside the unit.
M3 screw
(Transmission/X1, X2)
(Remote controller/Y1, Y2, Y3)
• To peel the fi lm 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 cable by overtightening the screw. On the other hand,
an undertightened screw can cause faulty contact, which
will lead to a communication failure.
]
Transmission cable
Remote controller cable
Connect to
Different
1 side
diameter
NO GOOD
NO GOOD
WARNING
Tightening torque
0.5 to 0.6 N·m
(5 to 6 kgf·cm)
CAUTION

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