Appendix A: Releasing Applications Initiating Devices
78
NFS-640 Programming Manual P/N 51333:B 10/03/2003
Initiating Devices
Releasing zone initiating devices include the following:
• FST-751 intelligent heat detectors
• FSI-751, FSP-751, FAPT-751, FSL-751 intelligent smoke detectors
• Conventional detection UL-listed devices connected to monitor modules
Refer to the SLC manual for the most up-to-date information about initiating devices.
You can use multiple zone initiating devices for the same releasing hazard. Do so by mapping zone
initiating devices to the same Releasing Zone. Factory Mutual and certain Local Authorities Having
Jurisdiction require using redundant wiring (NFPA 72-1999 Style 6 or Style D) for initiating devices in
releasing applications.
Warning Sounders
Warning sounders connect to any of the four panel NACs, to Panel Circuits, or to control module
circuits (refer to the NFS-640 Installation Manual). Note the following:
• If selecting Cross Zones, a warning sounder only activates when two zones alarm.
• Warning sounders—unlike release solenoids—do not wait for a Delay Timer.
• If Coding Functions are required for warning sounders, use one of the NACs—not a control
module.
• The same releasing hazard can activate multiple NACs.
Instructions for activating warning sounders:
Auxiliary Control Functions
Instructions for using control functions:
ACS Annunciation
Instructions for annunciating ACS points and detectors:
To activate a sounder Do this
When the Delay Timer starts, when
the releasing device activates, or both
Map the control module, Panel Circuit or NAC to a
releasing hazard zone (R0-R9).
Immediately when one of the
initiating devices activate
Map the control or NAC, or Panel Circuit to a
separate zone (not R0-R9) that is also mapped to
all initiating devices of the hazard.
Function Do this
A releasing application
requires control relays
Use control modules set for dry contact operation. Program
the control relays for different functions by following the
instructions in “To activate a sounder” above.
Providing control functions Use an ACM-8R remote relay module mapped to the software
zones of the control panel.
To Annunciate Do this
Points of releasing functions Select ACS Selection Group B to annunciate any of the
software zones described previously, including zones R0-R9.
For instructions, refer to “Annunciator Options” on page 33.
Individual detectors Select ACS Selection Group H, I, J, K or L. For instructions,
refer to “Annunciator Options” on page 33.
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