Connection Of Remote Controller Cable - AirStage UTY-RSKY Installation Manual

5.3. Connection of Remote Controller Cable

When connecting the remote controller cable to the indoor unit, do not
connect it to outdoor unit, power supply cable, or transmission cable
terminal blocks. It may cause a failure.
When switching the DIP switch (SW1), be sure to turn off the power
supply to the indoor unit. Otherwise, the PC board of the indoor unit may
be damaged.
• There are 2 methods to connect the remote controller cable to the indoor
unit. One is the connection using connecting cable (shipped with the
indoor unit), and the other is the connection the remote controller cable is
connected to the exclusive terminal block of the indoor unit.
• This is 3WIRE of remote control cables.
• The factory default setting of the DIP switch (SW1) is "2WIRE"
Using this setting, however, will disable normal operations.
5.3.1. Check whether or not a DIP switch (SW1) is present.
Find the DIP switch (SW1), which switches between 2WIRE and
3WIRE on the indoor unit PC board.
DIP switch (SW1)
• If there is no DIP switch (SW1),
proceed to the next step.
5.3.2. Check whether the indoor unit terminal block or
connectors are either type A or type B as described below.
Make sure to implement the connection method suitable for each type
according to the explanation below.
Type A
M3 screw
or
Terminal block Terminal block
● Type A (Terminal block)
(1) Cut the Y-type remote control cable terminal, and remove the insulation
from the cut end of the cable. (Fig. 1)
Fig. 1
Y-type terminal
Remote controller
cable
CAUTION
. (Indoor unit)
Indoor unit PC board
• If the DIP switch (SW1) is
present.
2WIRE
3WIRE
SW1
Set to "3WIRE" the
DIP switch (SW1)
Type B
Connecting cable
PC board
Connector
Remove the insulation
Remote controller
cable
(2) Connect the remote control cable to the exclusive terminal block.
Functional earthing (UTY-RSKYT)
Remote controller cable
Red : Y1
White : Y2
Black : Y3
Tightening torque
M3 screw
(Remote controller / Y1, Y2, Y3)
● Type B (Connector)
(1) Use a tool to cut off the Y-type 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. 2. Connect the remote controller cable and connecting cable
as shown in Fig. 3. Be sure to insulate the connection between the cables.
Fig. 2
20 mm
White
Red
Remote con-
troller cable
(2) Connect the remote controller cable to the connecting cable, and insert
it to the connector.
Example 1.
Remote controller cable
Functional earthing
(UTY-RSKYT) Connecting cable
Example 2.
Remote controller cable
Functional earthing
(UTY-RSKYT)
Note: The DIP switch, exclusive terminal block, and connector layouts
depends on the type of indoor unit. For details, see the indoor unit
installation manuals.
Be careful of the following when connecting 2 cables to 1 terminal.
GOOD
Diameter of cables
are different
Terminal block
Indoor unit
PC board
0.5 to 0.6 N·m
(5 to 6 kgf·cm)
Fig. 3
White
Connector
Red
Black
Insulated
Connecting
connection
cable
Black
Indoor unit
Connector
PC board
Indoor unit
Connector
PC board
Connecting cable
PROHIBITED
Connect the
cables to 1 side
En-4