Chapter 1 Product design
16 GSA-REL Technical Reference Manual
Release sequences
Automatic release sequence
The automatic release sequence requires an AND group or a matrix group. AND
groups and matrix groups require fire alarm signals from designated Signature
Series devices.
These logic groups are programmed using a PC and the System Definition Utility
(SDU) or Configuration Utility (CU) for your system. Figure 5 explains the
automatic release sequence.
Note: MIR2 systems do not support matrix groups. See Chapter 3
“Programming” for details on AND group rules. To create AND groups, see the
MIR2 System Programming Manual and the MIR2-SDU Online Help.
The GSA-REL horn circuit is not designed to generate an NFPA 72 standard
alarm evacuation signal, and does not meet UL 864 requirements for audible
alarm notification circuits intended for evacuation. Notification zones must include
additional NACs and appliances capable of producing the required evacuation
tone to meet these requirements.
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