Automist Smartscan Hydra
®
DIOM Manual - version 3.01.0
Plumis Ltd Copyright © 2020. All Rights Reserved.
Page 51 of 116
S MA RT SC AN
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The system can be used as a twin wire system (enabling base sounders to be incorporated). This type of
setup would require consideration of the battery requirements, as for domestic systems 72 hours standby
(as required by either BS 5839-1:2017 or BS 5839-6:2019) + 30-minute alarm time would be required. This
would typically mean an additional battery box may be required as most panels will only house 7ah
batteries.
When using an addressable system it is possible to program the multisensor in the room to activate an
output relay that in turn triggers the Automist system. Addressable systems allow a lot more flexibility in
programming and cabling, and typically can house bigger batteries, whereas most addressable fire panels
can house 12ah as standard.
Figure 46: Triggering Automist with a Volt-fire Relay Output
IMPORTANT!
Caution must be used in utilising higher sensitivity detection, such as aspiration systems,
which will cause heads to scan for a fire (but not to spray watermist) in case of sensitive detection of smoke.
By altering the detection method utilised on the fire testing of Hydra against BS 8458, and if the application
is to meet Building Regulations, the specifying installer is taking responsibility to ensure the activation time
of detection is no longer than the time it would take an EN54 multi-criteria smoke + heat detector to detect
a fire.
2)
Residential
In multi-storey blocks of flats, Automist may be configured to output a confirmed fire in a zone to the
building’s alarm panel, rather than just each individual dwelling, floor, or whole building. This gives much
better accuracy on the location of a confirmed fire than is typical with traditional systems. An alarm zone
must have a maximum of 3 sprayheads and not cover more than a single zone.
The Automist AP10 pump flow output should meet one of the following recommendations.
a)
The output should be connected to an audible alarm.
b)
Provided that the property is fitted with an automatic fire detection and alarm system meeting at
least the minimum grade and category recommended in BS 5839, the output can be interlinked to
this system. The automatic fire detection and alarm system should be in accordance with the
recommendations of BS 5839-1:2017 or BS 5839-6:2019 as appropriate.
c)
The alarm signal should be configured and acted upon in accordance with the fire strategy for the
building.
