3-9-2. MODEL: UTY-TEKX
SYSTEM DIAGRAM
ELECTRICAL WIRING
● Switching of air conditioner settings can be performed using an external
switch controller and a third-party device.
● ON/OFF, Temperature, Fan Speed and Operating Mode can be switched
using external devices, such as a room card-key.
● Card-key or other sensor switches are available as a locally purchased
parts.
A B
C
Indoor Unit
164 ft. (50 m) or less
SW
External
input cable
External switch
controller
Remote
controller cable
Remote
controller cable
164 ft. (50 m) or less
Remote controller
SW1
SW2
COM
Terminal
Connection to external contacts
Open circuit voltage : 12 (V) ± 2 (V).
Short circuit current :
<
=
2 (mA).
Short circuit detection resistance (R
ON
) :
<
=
1 (kilo-ohm).
Open circuit detection resistance (R
OFF
) :
>
=
50 (kilo-ohm).
Dry contact
External switch controller
External contact 1
External contact 2
External input
Remote
Controller Cord
REMOTE
CONTROL
External input cable
External switch controller
*Connect SW2 only when it is used.
Indoor unit
Remote controller cable
B + C < 1,640 ft. (500 m)
- (05 - 181) -
CONTROL
SYSTEM
CONTROL
SYSTEM
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