jablotron JA-110ST Quick Start Manual

The JA-110ST Bus combined smoke and heat detector
The JA-110ST 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 outdoors or in industrial premises.
The JA-110ST 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 only be used in enclosed 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 always be placed in the section leading to the exit
of the building (escape route), see Figure 1. If the building has a floor
2
area greater than 150 m , installation of an additional detector in some
other suitable place is required, see Fig.2.
1
2
Fig 1
1
2
6
Fig 2
6
1
3
2
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 center 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 a 0.5 m distance from the
corner) see Fig 4.
There is an insufficient circulation of air in corners.
The JA-110ST Bus combined smoke and heat detector
3 4
5
3 4
1. kitchen,
2. living room,
5
3. – 6. bedrooms
/
basic
coverage
recommended
coverage
Installation on sloping ceilings
If the ceiling is not suitable for mounting on a level surface (e.g.
a room under a roof ridge), the detector can be installed as in Fig. 5.
TOP
Fig 4
centre of the room, best location
acceptable location
Walls, partitions, barriers and lattice ceilings
The JA-110ST 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. In a case when 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 0.5 m 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 cause false alarms or reduce detection faults).
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.
1
+
3
Fig 6: 1 – detector cover opening (removal); 2 – detector cover closing
(insertion); 3 – optical signaling; 4 – arrow showing where to insert the
detector onto the bottom part; 5 – bus connection terminals;
6 – production code
Instructions
1. Open the detector cover, by turning it anti-clockwise
2. Connect bus cable and attach the plastic base to the selected
place using screws.
3. Connect the bus cable.
1 / 2
0.5m
0,9 m
Fig 5
2
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1400- 00- 0000- 0001
BUS
MLW51612
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5
6