22
(EN)
Basic Wiring Diagram
SW001
SW002
ADDRESS
SETTING
ON
ON
TB002
U1
U2
CN001
RED
1 2 3 4 5 6
1 2 3 4 5 6
LED1
TERMINAL
TB001
U1 U2
U1 U2
U1 U2 U1 U2
1 2 3 4 5 6 7 8
IN1 IN2 COM
+ -
OUT1 OUT2 COM
OUTPUTDC12VINPUT
CN002
SHORT OPEN
Room air conditioner
RAC connection wiring (supplied)
When connecting external equipment (P. 25)
When using a commercially sold
card key or coin timer, etc.
When outputting the
operation status or
alarm status of room
air conditioner
External input wiring
External output wiring
*To power source
(12V DC)
To relay, etc.
*: See page 25 for detailed information
Address setting switch
(SW001)(P.26)
Central control device
Inter-unit
control wiring
(TB002)
• No polarity
1Outdoor unit 2Indoor unit
1
Function setting
switch (SW002)(P.26)
Status indicator (LED1) indicates the
communication status with the room air conditioner.
• Lighting: Normal • Blinking: Abnormal
• OFF:
No power is supplied from the room air conditione
r
2 2
1While pushing the push button
by using a round bar or nger,
insert the external I/O wiring
securely from the wiring
insertion slot.
2
Pull the external I/O wiring lightly,
and conrm it does not come off.
Be sure to set the termination plug.
1 If using one outdoor unit, set the termination resistor
to SHORT at one location. If using more than one
outdoor unit, set it to SHORT at two locations.
* The termination plug can be set using this adaptor or the
control board of outdoor unit.
2 When setting using this adaptor, set the plug to
“Termination resistor SHORT” as shown at right.
* No setting is required for the outdoor unit for room air
conditioner since it has no termination plug.
* Depending on the system to congure, the inter-unit control wiring may not be connected to
this adaptor, however, set the termination resistor of this adaptor to SHORT to ensure the
stable operation of this adaptor.
SW001
SW002
ADDRESS
SETTING
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
Factory setting
(OPEN)
Plug
Set the termination plug(CN002).
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