ADEMCO Security System VISTA-15CN Guia de preparacion Pagina 48

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VISTA-15/VISTA-15CN Installation and Setup Guide
9–2
Sounder Connections and Power
The VISTA-15/VISTA-15CN provides a 12VDC output, which can power external alarm
sounders (bells or sirens; see table of compatible sounders on previous page). This output
activates a sounder when an alarm occurs.
Make connections to alarm output terminals 3 (+) and 4 (–). See Figure 17 below.
U
L
The total current drawn from the alarm output and the
auxiliary power output, combined, cannot
exceed 600mA. In addition, the sounding device must be a UL Listed audible signal appliance
rated to operate in a 10.2-13.8VDC range. Example: Wheelock Signals Inc. siren model 34T-12
(provides 85dBA for NFPA 74 and Standard 985).
Non-UL Installations
The total current drawn from this output cannot exceed 2 amps. A battery must be installed
because the battery supplies this current.
Going beyond the limits indicated (2 amps) will overload the power supply, and cause the
electronic circuit protecting the sounder output to trip.
Sounder Supervision
The VISTA-15/VISTA-15CN contains a sounder (Bell) supervision option. To activate the Bell
supervision option:
1. Cut the red Bell Supervision Jumper located above terminals 2 and 3 on the control board.
See Figure 18.
2. Connect a 2k ohm resistor across the terminals of the last sounding device.
Testing the Sounder
After you install the sounder, test the security system carefully, as follows:
1. Connect the battery wires from the control board to the battery, observing correct polarity.
2. Enter the Installer code (4112) and press the TEST (5) key on the keypad.
The external sounder should sound for 1 second if the sounder is working and proper
connections have been made. Note that if the backup battery is discharged, the sounder
does not turn on.
3. To turn off the Test mode, enter the Installer code (4112) and press the OFF key.
4. Disconnect the battery wires from the battery terminals.
5. Unplug the AC transformer from the AC outlet.
Figure 17. Typical Sounder Wiring Figure 18. Bell Supervision Wiring
+
-
3
4
ALARM
OUTPUT
CONTROL
BOARD
NO. 702
SIREN
+
-
1234567
CUT RED JUMPER
FOR BELL SUPERVISION
CONNECT 2k EOL RESISTOR ACROSS LAST
SOUNDING DEVICE FOR BELL SUPERVISION
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