Simplex 4004R - Timeline for Release Triggered by a Single Detector

The second table in Appendix D Applications with Relay Options lists all thirteen applications with the aux and expanded relay operation if
the enhanced relay operation is selected. The table also describes the operation of the NACs and RACs along with the functions of the four
IDCs and two SPM circuits. Refer to Programming of this manual for detailed programming instructions.
Note: Applications 10-13 use only the relay operation shown in this table.
Important notes: (NYC Abort – Does not comply with UL864) Specific operation of the NYC Abort is as follows:
Pressing the Abort switch does the following:
1. Bell and bell strobe turn on (NAC1).
2. Evacuation visuals turn off (NAC3).
3. Evacuation audibles turn off (NAC2).
4. Automatic Release Timer countdown stops at its current value.
Releasing the Abort switch starts the 90-second Investigation Timer. When the Investigation Timer expires, the following occurs:
1. Bell and bell strobe turn off (NAC1).
2. Evacuation visuals turn on (NAC3).
3. Evacuation audibles turn on at 120 BPM (NAC2).
4. Reload the Automatic Release Timer with the programmed value.
Subsequently pressing or releasing the abort switch repeats the process: silencing the NACs, activating the bell, starting the 90 second
investigation timer, and so on, until the Release Timer expires and the RACs activate.
Pressing or releasing the Abort switch while the Investigation Timer counts down, has no effect.
Note: All other abort switch modes are discussed in Programming Abort Switch Operation
3.2.2 Timeline for release triggered by a single detector
The applications that trigger the releasing sequence based on the activation of a single detector include all applications that do not use
cross zoning. See Appendix D Applications with Relay Options for a list of the available applications.
As shown in the following figure, activation of a single initiating device immediately activates the NACs and triggers an optional Automatic
Release Delay Timer. This optional delay timer, which has a range of 0 to 60 seconds, delays the activation of the RACs and prevents
release of the agent. When the timer expires, the RACs activate, releasing the agent.
Note:
• If the delay timer is set to 0, release of the extinguishing agent and activation of the discharge signals immediately follows alarm
activation.
• The abort switch can only be used for the duration of time specified by the delay timer.
• In application 11, RAC 2 turns on immediately when an alarm is activated. This is the pre-action RAC. RAC 1 turns on when the timer
expires.
page 6 579-354 Rev. X
4004R Fire Alarm installation, programming, and operating instructions