Automist Smartscan Hydra
®
DIOM Manual - version 3.01.0
Plumis Ltd Copyright © 2020. All Rights Reserved.
Page 24 of 116
S MA RT SC AN
®
factor in the detection system response.” This is supported by the above calculations as the temperature layer in
the ceiling becomes less defined without increasing the size of the design fire.
Extent of Automist protection
Figure 3: Automist Layout drawing
Automist layout design must be created using the online ARI layout tool to show sufficient coverage to all
the areas identified in the Design Specification (see page 15). The overall objective of a layout plan is to
ensure the coverage pattern covers all the square footage within the property. If in doubt, it is always
advisable to add another head to your scheme. The allowable shadow area (unprotected space) is:
•
1.2 m
2
per nozzle
Automist Smartscan Hydra supports up to 6 sprayheads per pump and controller pair.
The extent of Automist coverage should be provided in all parts of the dwelling, except for the following
areas, which may be excluded unless required by a fire strategy or risk assessment:
a)
bathrooms fitted with a door and with a floor area of less than 5m
2
;
b)
cupboards and pantries fitted with doors and with a floor area of less than 2m
2
, and rooms in
which the smallest dimension does not exceed 1m, where the walls and ceilings are covered with
non-combustible or limited-combustible materials;
c)
non-communicating, attached buildings such as garages, boiler houses, etc.;
“Non-communicating” means separated from the protected premises by not less than 30 min fire resisting
construction in accordance with the relevant part of BS 476 or the equivalent European Standard, for
example:
•
BS 476-21/BS EN 1365-1 for load bearing walls;
•
BS 476-22/BS EN 1364-1 for non-load-bearing walls and partitions;
•
BS 476-21/BS EN 1365-2 for floors;
•
BS 476-23/BS EN 13381-1 for suspended ceilings;
