jablotron SD-728 Manual

The SD-728 stand-alone smoke detector
The SD-728 is used to detect fire hazards in interior residential or commercial
buildings (non- industrial). It is battery-powered with a built-in warning siren and red
LED. It warns of fire to provide sufficient time to extinguish the fire, or to leave the
premises and make calls for help. Smoke detectors need to be installed in the right
place, regularly maintained and tested as described in this manual. The optical
smoke detector works on the principle of scattered light and is very sensitive to
large dust particles, which are dense, and is less sensitive to smaller particles
generated by the combustion of liquids such as alcohol.
Detector range
The smoke detector must be installed so that any smoke easily drifts into the
detector, such as on the ceiling. It is suitable for residential buildings, but not
suitable for free spaces, outdoor environments or interiors with an extremely high
ceiling where fire by-products would not reach the detector position.
The detector must always be placed in the section leading to the exit of the
dwelling (escape route), see Figure 1. If the dwelling has a floor area greater than
2
150 m , an additional detector is required, see Fig.2.
An apartment block must be equipped with a detector in each apartment. In family
houses and residential flats or maisonettes a detector must also be placed at the
highest point of the common hallway or spaces (escape routes), see Fig.3.
BEDROOMS
KITCHEN
LIVING ROOM
BEDROOM
MINIMUM SECURITY
FOR MORE SECURITY
Fig. 1
The SD-728 stand-alone smoke detector
BEDROOMS
KITCHEN
LIVING ROOM
BEDROOM
MINIMUM SECURITY
FOR MORE SECURITY
BEDROOM
Fig. 2
It is recommended
additional detectors in rooms where
people sleep in rooms with an
increased risk of fire, see Fig.2.
Positioning on level ceilings
Place the detector in the center of
the room, as level as possible.
Detectors must not be recessed into
the ceiling (worse conditions for the
spread of smoke). Never place the
detector in a room corner (ensure a
distance of at least 0.5 meters from
the corner), see Fig 4.
• Installation on sloping ceilings
If the ceiling is not suitable for mounting on a level surface (eg a room under a
roof ridge), the detector can be installed as in Figure 5.
CEILING
BEST LOCATION
(CENTRE OF CEILING)
ACCEPTABLE
LOCATION
Fig. 4
• Walls, partitions, barriers and lattice ceilings
The SD-280 must not be installed closer than 0.5 m from any wall or partition. A
narrow room with a width of less than 1.2m requires the detector(s) to be placed at a
distance of at least one third of the room's width away. In the case of separating walls
(partitions, warehouse objects) which do not reach the ceiling, the space is considered to
be fully separated if the gap between the top of the separating wall and the ceiling
does not exceed 0.3 m. A free space of at least 0.5m is required under the detector.
Irregularities in ceiling shape which do not
insignificant – the ceiling can be regarded as being even and limits from the table are
1 / 2
to place
BED
ROOM
BED
KITCHEN
ROOM
BED
ROOM
MINIMUM SECURITY
Fig. 3
0.5m
90cm
Fig. 5
exceed 5% of ceiling height are considered
MZZ55000