The FenwalNET 6000 follows a three-stage progression for suppression: Pre-Alarm, Pre-Release, and Release. The Pre-Alarm state is a warning triggered by a single detector exceeding a low-level threshold (Page 149) [1].
The Pre-Release state, or countdown state, begins when two automatic detectors in a counting or cross-zoned configuration issue an alarm; this typically triggers a 30-second countdown (Page 112, 149) [1].
The Release state occurs when the countdown expires or a manual-release station is activated, triggering the agent discharge (Page 149) [1].
Abort Functionality Abort switches are momentary, dead-man-type devices that require constant force to remain engaged (Page 112) [1].
They are typically assigned to monitor modules with addresses 106 through 110 (Page 112) [1].
Depending on configuration, the abort function can operate in several ways:
Reset the countdown timer to the full initial delay period (Page 112) [1].
Hold the timer at the remaining time and resume when released (Page 9) [1].
Count down to 10 seconds and hold, resuming at 10 seconds upon release (Page 9) [1].
Special NYC operation modes (Page 9) [1].
