Wiring Procedure - Fujitsu AIRSTAGE K00250LW Addendum

6. 6.

Wiring procedure

• Remove the cover of the electrical compartment and follow the terminal plate to
connect the electric cables to the terminal.
• After connecting the cables, secure them with the cable ties.
• Connect the cables without applying excessive tension.
Cable routing
Secure with a binder as shown in the fi gure below.
Connecting the
power supply
cable
Cable tie
(Accessory)
Power supply
cable routing
Attaching the conduit
Conduit
(Power supply cable)
Conduit
(Transmission cable)
• Fix the conduit with the supporters as shown below.
Conduit (Power supply cable)
Outdoor unit
30 in 54 in
(756 mm) (1,361 mm)
or less or less
Connecting cables to the terminals
WARNING
Use ring terminals and tighten the terminal screws to the specifi ed torques, other-
wise, abnormal overheating may be occurred and possibly cause serious damage
inside the unit.
Be sure fi ll the holes of power supply cable and transmission cable with putty (Locally
purchased).
If small animals such as insects enter the electrical component box, a short circuit
may be caused.
Tightening torque
M3 screw 4.4 to 5.3 lbf·in (0.5 to 0.6 N·m)
M8 screw 44.3 to 62.0 lbf·in (5.0 to 7.0 N·m)
Connecting the
transmission
cable
Cable guide
Cable clip
Cable tie *
(Accessory)
Transmission cable routing
Lock nuts
Supporter
54 in 54 in
(1,361 mm) (1,361 mm)
or less or less
(1) Connecting the power supply cable
Caution when wiring cable
1) Use ring terminals with insulating sleeves as shown in the fi gure 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.
Strip 3/8 in (10 mm)
Screw with
special washer
Cable
Ring terminal
Terminal block
Ring terminal: M8
1-15/16 to 2-3/8 in
(50 to 60 mm)
* Use a ring terminal to connect the electric cables to the power supply terminal
board.
(2) Connecting the transmission cable
Shielding the transmission cable
Connect both ends of the shielded wire of the transmission cable to the earth (ground)
terminal of the equipment or to the earth (ground) screw near the terminal.
Be very careful that the screws are not overly tightened as the wires may snap and
the terminal may be damaged.
Wind with insulation tape to
prevent short circuit
Use one side of the
Connect both ends of shielded
twisted-pair cable
wire to earth (ground).
Be sure to use one side of a twisted-pair cable when using transmission cable with 2
sets of twisted-pair cables.
5/16 to 3/8 in (8 to 10 mm)
1-9/16 in (40 mm) or more
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
Earth (Ground)
cable
Putty
Cable clip
Cable tie
(accessory)
Putty
Cable clip
Cable tie (accessory)
En-16