Appendix C: Applications 
226  P/N 3102351-EN • REV 005 • ISS 28DEC18 
Notes 
•  Channel 1: T3T4-TC3 (fire): The device at serial number visible on T3T4 device. 
•  Channel 2: T3T4-TC4 (CO): The device at serial number + seventh location. 
•  CO alarm signals are required to activate TC4 CO evacuation signals. CO supervisory or 
CO monitor signals are not allowed to activate CO evacuation signals. 
•  CO alarm, CO supervisory, and CO monitor signals do not activate TC3 fire evacuation 
signals. 
Correlated zone and system alarm signaling 
applications 
Correlated signaling applications are those in which sounder bases are triggered by associated 
correlation groups. This includes zone alarm and system alarm signaling applications. 
Detectors are added to the input side, and polarity reversal modules are added to the output 
side of one or more correlation groups. 
Zone alarm signaling applications 
What is zone alarm signaling? 
In zone alarm signaling applications, detectors and sounder bases are grouped by zone. All 
sounder bases within a zone automatically sound alarm signals when any detector in the zone 
initiates an alarm event. 
The sounder bases, once activated, continue to sound an alarm signal until: 
•  Smoke is cleared from the active detectors and the control panel is reset. 
•  Signal Silence is pressed. 
•  The control panel’s Auto Signal Silence timer expires, if programmed. This can be from 5 to 
30 minutes. 
•  The in-suite signal silence timer expires, if programmed. See “What is in-suite signal 
silence?” on page 39 and on page 88. 
Typical wiring for zone alarm signaling 
Figure 58 on page 224 shows sounder base wiring for zone alarm signaling.