Chapter 1 Product design
12 GSA-REL Technical Reference Manual
Table 9: Compliance requirements
When two or more GSA-REL modules are powered from a
single riser, those GSA-REL modules must be in the same
notification zone.
UL 864 requires synchronization of notification appliances when
they are in the same notification zone. This means that when
more than one GSA-REL is installed, the audible and visible
notification appliances controlled by each GSA-REL must
operate in separate notification zones. The notification
appliance output from two GSA-REL modules cannot be audible
or visible within the same notification zone.
The GSA-REL 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.
Horn signaling patterns are controlled by the GSA-REL, so
configurable horns must be set for steady output.
The manual release station controls only the GSA-REL to which
it is connected.
When using NFPA 12A and NFPA 2001 suppression agents, a
separate, mechanical manual release is required in addition to
the release station connected to the REL.
The abort station controls only the GSA-REL to which it is
connected. However, activation of the abort switch must be
annunciated at all panels in a network.
UL 864 allows only one abort station per suppression area. This
means you cannot install more than one GSA-REL per
suppression area.
Zone relay output contacts cannot be used for a notification
appliance circuit or a nonaddressable signaling line circuit.
Service disconnect station
Activation of the service disconnect must be annunciated as a
supervisory event at all panels in a network.
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