Bosch FCS-320-TP2 - Page 45

Aspirating Smoke Detector Planning | en 45
Bosch Sicherheitssysteme GmbH Operation Guide 2018.04 | 2.0 | F.01U.130.926
U-pipe system for space protection
1 pipe system
FAS‑420‑TP1
FAS‑420‑TT1
2 pipe systems
FAS‑420‑TP2
FAS‑420‑TT2
FAS / FCS
FAS / FCS
A B C D I J
A B C D I J
U-pipe system for space protection
Limiting values Min. distance: FCS-320 – T-fitting 4m
U-pipe system Max. distance: FCS-320 – T-fitting 20 m
Max. branch length
– With low fan voltage
– With high fan voltage
50m
65m
Max. overall pipe length per pipe system (Ø 25mm)
– With low fan voltage
– With high fan voltage
120m
150m
Min. distance between 2 air sampling openings 4m
Max. distance between 2 air sampling openings 12m
Max. number of air sampling openings (n) per pipe system 20
U-pipe system Air sampling
opening
Number of air sampling openings
2 4 6 8 10 12 14 16 18 20
∅ air sampling
opening in mm
a
A 5.2 3.6 3.4 3.0 2.5 2.5 2.0 2.0 2.0 2.0
B 4.4 3.4 3.0 3.0 2.5 2.0 2.0 2.0 2.0
C 3.6 3.2 3.0 2.5 2.5 2.0 2.0 2.0
D 3.4 3.2 3.0 2.5 2.5 2.0 2.0
E 3.2 3.0 3.0 2.5 2.5 2.0
F 3.4 3.2 3.0 2.5 2.5
G 3.6 3.4 3.0 2.5
H 3.6 3.4 2.5
I 3.6 3.6
J 3.8