En-5
7. CONNECTION OF REMOTE CONTROLLER CABLE
CAUTION
When connecting the remote controller cable to the indoor unit, do not
connect it to the outdoor unit or the power terminal block. It may cause a
failure.
Indoor unit
This product
Remote controller cable
When connecting Indoor unit and
thermostat convertor with the Remote
controller cable, the following items
should be considered.
Red
White
Black
There are 2 methods to connect the remote controller cable to the indoor
unit. One is the connection using connecting cable contained by indoor
unit, and the other is the connection the remote controller cable is con-
nected to the exclusive terminal block of the indoor unit.
Exclusive terminal block for remote controller connection method is differ-
ent depending on each model. Modify the remote controller cable as per
below description and connect it.
(For the details, refer to the installation manual of the indoor unit to be
used.)
(1)
When connecting to the connector
Case 1: For non-polar 2-wire
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 between the cables.
Remote controller
cable (Non-polar)
Insulated
connection
White
Black
13/16 in
(20 mm)
Red
Connecting cable
(The number of terminal
is different depending
on the model.)
Cut and
insulate
Fig.1
Fig.2
Insert it to the connector. Set to “2WIRE” the DIP switch (SW1) on the
PC board of the indoor unit.
* Layout of Connector and PC
board is varies, depending on
the type of indoor unit.
Set to “2WIRE” the
DIP switch (SW1)
Indoor unit
PC board
Connector
(adapter)
Remote controller
cable (Non-polar)
Connecting cable
Connector CNC01
(onboard)
Connect to earth
(ground) screw
Functional earthing
(If necessary)
SW1
Indoor unit
PC board
Case 2: For polar 3-wire
Modify the cable as per below methods.
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 between the cables.
Fig. 1
Fig. 2
Remote
controller cable
White
Red
Red
White
13/16 in
(20 mm)
Connector
Black
Black
Insulated con-
nection
Connecting
cable
Insert it to the connector.
PCB
Connecting cable
Connector
Terminal block
to outdoor unit /
power supply
Remote controller cable
Indoor unit
PCB
When the board has the 2WIRE/3WIRE DIP switch on it, set it to
3WIRE.
For how to set, see “Case 1: For non-polar 2-wire”.
(2)
When connecting to the exclusive terminal block
Connect the end of remote controller cable directly to the exclusive
terminal block.
If there is the 2WIRE/3WIRE switch on the PC board of the indoor unit,
set it to match the connection method of the connected remote control-
ler cable.
Example) Connection of non-polar 2-wire
* Layout of terminal block and
PC board is varies, depending
on the type of indoor unit.
Terminal block
Functional earthing
(If necessary)
Remote controller
cable
Set to “2WIRE” the
DIP switch (SW1)
Indoor unit
PC board
Summary of Contents for UTY-TTRX
Page 9: ......
