Planning For Long Pipe Feed Lines - Bosch FAS-420-TT Series Operation Manual

56 en | Planning
Double U-pipe system - simplified planning
1 pipe system
FAS-420-TP1
FAS / FCS
FAS-420-TT1
2 pipe systems
FAS-420-TP2
FAS-420-TT2
Double U-pipe system, e.g. for equipment protection
Limiting values Min. distance FAS-420 – last T-fitting
Double U-pipe Max. distance FAS-420 – last T-fitting
Max. branch length
Max. overall pipe length (Ø 25 mm)
Min. distance between air sampling openings (d)
Max. distance between air sampling openings (d)
Max. number of air sampling openings (n) per pipe system
Double U-pipe
Ø of all air sampling openings in mm
a
Punch diameter of the aspiration reducing film sheet
4.9

Planning for long pipe feed lines

Notice!
Only to be used when taking over inventory planning
Pipes with a 40 mm diameter are required for planning pipe feed line A. Area B is designed
with 25 mm pipes in accordance with Standard pipe planning, page 39 . The plan applies for
the pipe configurations described above.
2020.04 | 6.1 | F.01U.029.275
FAS / FCS
Operation guide
Aspiration smoke detector LSN improved
d
d
Number of air sampling openings
4 8
a
4.0 3.4
2 m
20 m
20 m
100 m
0.1 m
4 m
20
12 16 20
3.0 2.5 2.0
Bosch Sicherheitssysteme GmbH