Installation & Commissioning of Control & Monitoring Add On’s
Page: 14
Isolation
If the trigger zones are isolated by the FACP, then the trigger zone isolated indicator at the Agent
Release Module and Local Control Station is illuminated, and the system inoperative output is
operated.
Disablement of the Trigger Zones
If the trigger zones are disabled by the FACP, then the isolate indicator at the FACP is illuminated
and the system inoperative output is operated.
5.2
Agent Release Module BRD25ARB - A
The Agent Release Module controls and monitors all the requirements for agent release and
carries the slide in label for identification of the agent and application area.
Keyswitch
PCB
Manual Release
Switch
AUTO / MANUAL
MANUAL ONLY
MANUAL HOLD
MANUAL RELEASE
ACTIVATED
AUTO RELEASE
ACTIVATED
RESERVE AGENT
TRIGGER ZONE
DISABLED
INITIAL AGENT
AGENT
RELEASED
BLOCKED MODE
COMMON FAULT
DISABLED
M
A
N
U
A
L
E
L
E
A
S
E
R
MANUAL
DISABLED
AUTO / MANUAL
HOLD
AGENT
SELECT
MANUAL
ONLY
Figure 20: Exploded View of Module and Front Panel Layout
Controlled Access
It is a requirement that control be secured from unauthorised use. For this reason a key switch
has been included in the control process.
DISABLED
AUTO / MANUAL
MANUAL
ONLY
Disabled, Manual Only, Auto/Manual Keyswitch
In disabled mode the
selected activation circuit is electrically isolated from the activation device, and the agent can not
be released. In manual only mode, the agent can only be released manually, and in Auto/Manual
mode the agent can be released automatically or manually.
Note:
The key is removable in all positions
.
MANUAL
HOLD
Manual Hold
When activated, delays the discharge of the agent. When the switch
is depressed during the pre-discharge delay, the delay is restarted when the switch is released. If
depressed at any other time a fault is registered after a 10 second debounce time out period.
AGENT
SELECT
Agent Select
When activated, causes the selected agent to toggle between Initial
and Reserve.
M
A
N
U
A
L
E
L
E
A
S
E
R
Manual Release
When activated causes a manual release of the agent, providing
the system is operative.
