Planning Notes - Bosch Fireray 50 Product Information

Product Information Linear Smoke Detector Fireray 50/100RV

6. Planning Notes

It is very important that the system be carefully planned and precisely adjusted, to
ensure that the detector responds as early as possible.
The response time of the system is dependent on the installation location, the volume
of smoke generated, the ceiling construction and air ventilation.
Note: Since the smoke over a fire source does not just climb vertically upwards, but
rather spreads like a mushroom cloud (depending on existing air currents and air
pockets), the breadth of the monitoring area is much greater than the diameter of the
IR beam.
D According to VdS 2095 and DIN VDE 0833- 2, the number of light beam smoke
detectors must be selected so that the maximum monitoring range A specified in
the table is not exceeded.
D The detectors must be distributed such that no point of the ceiling is further removed
from the beam center (horizontal distance) than is specified in column D
D The distance between two parallel beams may not be greater than the doubled
distance D D
D The center line of the monitoring beam may not be closer than 0.5 m to walls,
equipment or stored goods.
Table 1.: Distances and Monitoring Areas according to VdS
Room height R g
up to 6 m
more than 6 m
to 12 m
more than 12 m
to 16 m *)
D Greatest permissible horizontal distance of any point of the ceiling to the next-closest beam
H
A Maximum monitoring range per detector (= double the product of the greatest horizontal
distance D
D Distance of the detector to the ceiling
L
α
Angle that the roof/ceiling pitch forms with the horizontal; if a roof has different pitches (e.g.
sheds), use the smallest existing pitch
*) With a room height of more than 12 m, it is recommended that you provide a second moni
toring level on which the detectors are arranged offset to the first monitoring level. -
Depends on the use and environmental conditions (e.g. rapid fire development and smoke
dissemination)
D There must be a constant visual line between the detector and reflector, which may
not be interrupted by moving objects (e.g. overhead crane).
H
D
H H H H
6 m
6.5 m
7 m
and the maximum permissible detector/reflector distance)
H
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α < 20_
A
D
2
1200 m 0.3 m to 0.5 m
2
1300 m 0.4 m to 0.7 m
2
1400 m 0.6 m to 0.9 m
PI - 34.85
H
Roof pitchα
α > 20_
D
L L
0.3 m to 0.5 m
0.4 m to 0.9 m
0.8 m to 1.2 m
601-F.01U.002.705
A1.en / 29.12.2004
ST-FIR/ PRM1/ zab