Fujitsu Airstage UTY-RNRYZ3 Installation Manual page 4

B. When attaching to the wall directly:
Wall
Seal the wiring hole of the remote controller
cable with putty.
Rear case
Trap (remote controller cable)
C. When routing the cable on-wall:
Cut off
Rear case
5.3.2. Connecting the remote controller cable
When connecting a remote controller cable to the remote controller
terminal block, please use the specifi ed torque to tighten screws. If you
over-tighten screws, they will break the terminal unit.
Be careful to avoid breaking the cable by over-tightening the cable tie.
Tightening torque
Fasten the outside covering of the connection cable with the cable tie.
Tighten the cable tie fi rmly so that pulling force does not propagate to the
terminal connection even if force of 30 N is applied to the cable.
Select a fl exible cable that can be bound using cable ties from over the
cable sheath inside this unit.
Cable tie
GOOD
5.3.3. Attach the front case
Connect the remote controller cable connector to
the connector of the front case PC board. Insert
after adjusting upper part of front case. Otherwise,
there is a risk of damage to the internal parts of this
unit. When you attach the front case, make sure that
the cables are not being pinched by front case.
5.4. Connecting to the indoor unit
When connecting the remote controller cable to the indoor unit, do not con-
nect it to the outdoor unit or the power terminal block. It may cause a failure.
When switching the DIP switch (SW1) on the indoor unit PC board, be
sure to turn off the power supply to the indoor unit. Otherwise, the PC
board of the indoor unit may be damaged.
En-4
Connector
Putty
Screws
Trap
Cable cover
(more than
1 mm thick)
Epoxy putty
CAUTION
0.8 to 1.2 N•m (8 to 12 kgf•cm)
Functional earthing (If necessary)
PROHIBITED
(1)
(2)
CAUTION
There are 2 methods to connect the remote controller cable to the indoor
unit. One is the connection using connecting cable (Included in the indoor
unit), and the other is the connection the remote controller cable is con-
nected to the exclusive terminal block of the indoor unit.
(For the details, refer to the installation manual of the indoor unit to be
used.)
5.4.1. When connecting to the connector
(1) Use a tool to cut off the terminal on the end of the remote controller
cable, and then remove the insulation from the cut end of the cable as
shown in Fig. 1. Connect the remote controller cable and connecting
cable as shown in Fig. 2. Be sure to insulate the connection between
the cables.
Fig.1 Fig.2
20 mm
Insulated
connection
Remote control-
ler cable (Non-
polar)
(2) Connect the remote controller cable to the connecting cable, and
insert it to the connector. Set to "2WIRE" the DIP switch (SW1) on the
PC board of the indoor unit.
Set the DIP switch
(SW1) to "2WIRE".
Connect to earth Functional earthing
(ground) screw (If necessary)
Remote controller
cable (Non-polar) Connecting cable
* Layout of Connector and PC
board is varies, depending
on the type of indoor unit.
5.4.2. When connecting to exclusive terminal block
(1) Connect the end of remote controller cable directly to the exclusive
terminal block. Set to "2WIRE" the DIP switch (SW1) on the PCB
(printed circuit board) of the indoor unit.
Terminal block
Functional earthing
(If necessary)
Remote controller
cable (Non-polar)
* Layout of terminal block and
PC board is varies, depend-
ing on the type of indoor unit.
Tightening torque
M3 screw
(Remote controller / Y1, Y2)
For "Group control" or "Multiple remote control", refer to the following
fi gure on how to connect to the indoor unit terminal.
GOOD
Diameter of cables
White
Connecting
cable
Red
Black
Cut and
terminate
Indoor unit
PC board
Connector CNC01
(onboard)
SW1
Connector
(adapter) Indoor unit
PC board
Indoor unit
PC board
Set to "2WIRE" the
DIP switch (SW1)
0.5 to 0.6 N·m
(5 to 6 kgf·cm)
PROHIBITED
Connect the cables
are different to 1 side