Limits To Planning - Siemens FDA241 Planning, Mounting

Planning
4

Limits to planning

4.10 Limits to planning
40 | 56
Building Technologies
Fire Safety
Observe local regulations and specifications for the limits of the detection range of
the aspirating holes. The local regulations and specifications take priority over all
other information in this document.
The following limits are set for planning the pipe system depending on the
aspirating smoke detector used.
Single pipe
Detector Sensitivity
[%/m obs]
FDA221 0.14...20
FDA241 0.03...20
Branched pipes (symmetrical and asymmetrical U-topology)
Detector Sensitivity
[%/m obs]
FDA221 0.14...20
FDA241 0.03...20
Detector Sensitivity
[%/m obs]
FDA241 0.03...20
Adherence to the planning limits is verified by the 'FXS2056 ASD Asyst Tool V2'
software.
The maximum number of aspirating holes depends on the sensitivity and
whether it is a question of class A, B, or C. You will find these details in the
'FXS2056 ASD Asyst Tool V2' software (see also the table above).
In rooms where there is an increased risk (rooms with ventilation systems), the
size of the monitored area drops to 270...540 m² with the FDA241
(170...340 m² with the FDA221).
The maximum monitored area depends on the topology selected and the overall
maximum pipe length.
Monitored
surface
Length of pipe
system
500 m 30 m
2
800 m 60 m
2
Monitored
surface
Length of pipe
system
500 m 2x 25 m
2
800 m 2x 60 m
2
Monitored
surface
Length of pipe
system
800 m 4x 30 m
2
I-topology
Number of
aspirating holes
(Class A)
12
16
U-topology
Number of
aspirating holes
24
34
Double U-topology
Number of
aspirating holes
34
A6V10334435_g_en_--
2017-09-12