Section 15 – External Sounders
15-3
Installing Alarm Indicating Devices to the Alarm Output
Be sure to follow the proper guidelines below, depending on whether the system is installed
in a UL or Non-UL application.
Compatible Alarm Indicating Devices
UL
Use only UL Listed sounding devices for UL installations
Model Number
Device Type
Requires Polarizing Diode
719
Compact Outdoor Siren
(not UL Listed)
Yes
747
Indoor Siren
Yes
AB12
Grade A Bell
Yes
System Sensor MA 12/24D
Fire Piezo Horn
No
System Sensor P12575
Fire Horn/Strobe
No
Wheelock AS-121575W
Fire Horn/Strobe
No
UL985 Household Fire or Combination Household Fire/Burglary Installations
For installations, which must provide UL Listed protection, the total current drawn from the
alarm output, auxiliary power output, and polling loop combined, must not exceed 750mA in
order to comply with the battery independence requirements. If, for example, two System
Sensor PA400 piezo alarm sounders, wired in parallel, are used (24mA total), then 726mA
(750mA – 24mA) is available for auxiliary output and polling loop use.
UL
This control complies with National Fire Protection Association (NFPA) requirements for temporal
pulse sounding of fire notification appliances.
Wire polarized fire-indicating devices to the alarm output as shown in Figure 15-1.
+
-
1
2
3
4
5
6
7
8
ALARM SOUNDER OUTPUT 10VDC - 13.8VDC
1.7A maximum
+
-
BELL
HORN
Figure 15-1: Wiring Polarized Fire Indicating Devices
Summary of Contents for VISTA-50PEN
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