JABLOTRON
ALARMS
a.s.
Pod
Skalkou
4567/33
46601
Jablonec
n.
Nisou
Czech
Republic
www
.jablotron.com
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JA-150ST Wireless combined smoke and heat detector
JA-150ST Wireless combined smoke and heat fire detector
1 / 2
MLW51707
The JA-150ST is a component of the
JABLOTRON JA-100
system.
It is used to detect fire hazards in a building interior. The product is not
designed to be installed in industrial premises. The detector is powered
by three LR6 (AA) type alkaline batteries, which are not included.
We recommend you buy them together with the detector.
The JA-150ST consists of an optical smoke detector and a heat
detector. The optical smoke detector is very sensitive to large dust
particles which are present in dense smoke. It is less sensitive to
smaller particles generated by the combustion of liquids such as
alcohol. That is why the fire detector also contains a built-in heat
detector which has a slower reaction but is much better at detecting fire
which generates only a small amount of smoke. The detector has
a status reaction (reports its activation and deactivation). The detector
should be installed by a trained technician with a valid certificate issued
by an authorized distributor.
Detector location
The smoke detector must be installed so that any smoke easily drifts
into the detector owing to natural thermal circulation (usually on the
ceiling). The detector can be used only in closed interiors. It is not
suitable for interiors where smoke can disperse over a large area and
cool down (e.g. interiors with extremely high ceilings – above 5 m) – the
smoke would not reach the detector position.
The detector must be always placed in the section leading to the exit
of the building (escape route), see Figure 1. If the building has a floor
area greater than 150 m
2
, installation of an additional detector in some
other suitable place is required, see Fig.2.
1
2
3
4
5
1. kitchen,
2. living room,
3. – 6. bedrooms
y
/
basic
coverage
{
recommended
coverage
Fig 1
1
2
3
4
5
6
Fig 2
1
2
3
6
Fig 3
In buildings and family houses with multiple floors, detectors
should be installed above stairwells. It is recommended to place
additional detectors in rooms where people sleep. See fig 3.
Installation on level ceilings
Place the detector in the centre of the room if possible.
The detector
must not be recessed into the ceiling
due to the possible existence
of a warm air layer on the ceiling.
Never place the detector in the
corner of the room
(always keep at least 0.5 m distance from the
corner) see Fig 4. There is an insufficient circulation of air in the
corners.
Installation on sloping ceilings
If the ceiling is not suitable for mounting on a level surface (e.g. a
room under a roof ridge), then the detector can be installed as in Fig 5.
0.5m
TOP
Fig 4
0,9 m
Fig 5
centre of the room, best location
acceptable location
Walls, partitions, barriers and lattice ceilings
The JA-150ST detector must not be installed closer than 0.5 m
from any wall or partition.
A narrow space with a width of less than
1.2 m requires the detectors to be placed at a distance of at least one
third of its width away. If a room is separated into sections with
furniture, racks or semi partition walls, which do not reach the ceiling,
the space is considered to be fully separated if the gap between the top
of these and the ceiling does not exceed 0.3 m. A free space of at least
0.5m is required under and around the detector. Any irregularities of the
ceiling (e.g. girders) exceeding 5% of the ceiling height should be
considered a wall and the above-mentioned limitations should apply.
Ventilation and air circulation
The detectors must not be installed directly by ventilation or air
conditioning vents, etc…
If the air is supplied through a perforated
ceiling, there must be no perforation within a radius of 0.6 m of the
detector.
Avoid installing the detector in the following locations:
Places with poor air circulation (niches, corners, apexes of
A-shaped roofs, etc.)
places exposed to dust, cigarette smoke or steam
Places with over-intense air circulation (close to ventilators, heat
sources, air conditioning outlets, etc.)
In kitchens and other cooking places (because steam, smoke or
oily fumes can reduce detector sensitivity, thus cause false alarms
and detection faults).
Within a 1m radius of fluorescent tubes or energy-saving light bulbs
(electrical interference may negatively affect the detector’s radio
communication)
In areas with lots of small insects
Warning: The most false alarms are caused by an
improper location of the detector.
See CEN/TS 54-14 standards for detailed installation
guidelines.
Installation
Abide by the procedures recommended in the previous paragraphs.
Fig 6: 1 – detector cover opening; 2 – detector cover closing;
3 – optical status signalling; 4 – arrow showing where to insert the detector
onto the bottom part; 5 – production code; 6 – configuration jumpers;
7 – battery holders
