The VISTA-128BPT/VISTA-250BPT provides a bell circuit output for operating fire and burglary alarm notification appliances. The alarm output is rated as follows: 10VDC – 14VDC, 1.7A max., power-limited.
Compatible Alarm Indicating Devices
Supervising the Alarm Output
To wire the alarm output using the supervision feature, perform the following steps:
- Wire polarized fire-indicating devices to the alarm output as shown in Figure 3-6.
- Wire nonpolarized burglary indicating devices to the alarm output using a polarizing diode (two 2A diodes supplied), as shown in Figure 3-7.
- Program Zone 970 with a response type of 05 (trouble by day/alarm by night).
NOTE: When supervising the bell output (zone 970), only one device can be connected to the alarm output (terminals 4 and 5) for UL and Fire installations.
The minimum load on the alarm output must exceed 5mA at 12V for proper supervision operation.