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CTV900A
2-Door Controller
INSTALLATION MANUAL
POWER CONNECTIONS
A 15 amp AC power source with a dedicated breaker and an isolated ground is recommended. Connect a
24VAC, 75VA (maximum) transformer to the controller’s AC terminals and mount it near the cabinet. Wire two
12VDC, 7Ah, gel type batteries in series and then connect them to the BAT+, BAT- terminals with the battery
leads supplied (see page 32).
Do not power up the 2-Door Controller until all connections are completed.
CTV900A
2-Door Controller
TAMPER
TAMPER
TRANSFORMER
24VAC, 75VA (Max.)
50/60Hz, (UL/ULC:
CDVI150 or CDVI200
recommended,
Europe: TR2475
recommended)
Do not connect to a receptacle
controlled by a switch.
Other 24Vac, 75VA, 50/60Hz
UL/ULC certified transformer
can be use.
AC Supply
LED Indicator
CTV900A
2-Door Controller
TAMPER
TAMPER
Ground
CONNECTING EARTH GROUND
A cold water pipe provides the best earth ground for the system. If a cold water pipe is not available, nd
another good earth ground. Run an AWG #14 solid copper wire from the controller’s EARTH GND terminal
(located on top right of controller) to the cold water pipe. Place the ground clamp below any other ground
clamps on the same water pipe.
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