MAN3184 - TITANUS PRO
•
SENS®
98
5.3.8 Project planning with air return
In cases where there are air pressure differences between the area of the
TITANUS PRO·SENS® and the area of the aspiration apertures, air return of
the drawn-in sample air into the pressure area of the aspiration apertures
may be necessary. For this, a correspondingly long aspiration pipe must be
connected to the air outlet of the TITANUS PRO·SENS®.
As air return can have a negative effect on the transport time of the
aspirating smoke detector, the effect of air return on the permissible overall
pipe length must be considered.
Air return with a
∅
40 mm pipe does not have any influence and can be
planned and/or retrofitted without reducing the overall pipe length.
Consideration of air returns:
In order to calculate the maximum aspiration pipe length, the length of the air
return must be multiplied with the respective factor a and subtracted from the
permissible overall pipe length.
Factors for calculating the air return lengths (Ø 25 mm):
Length of the
air return
Fan voltage
6.5 V
6.9 V
≥9.0 V
0 to 5 m
0.0
1.3
0.0
>5 to 10 m
0.8
0.5
0.5
>10 to 25 m
0.8
0.8
0.5
>25 to 50 m
0.8
0.8
0.5
Factors for calculating the air return lengths (Ø 32 mm):
Length of the
Air return
Fan voltage
6.5 V
6.9 V
≥9.0 V
0 to 5 m
0.0
0.3
0.0
>5 to 10 m
0.0
0.3
0.0
>10 to 25 m
0.2
0.3
0.0
>25 to 50 m
0.25
0.3
0.1
Aspiration pipe length = overall pipe length
– (length of air return * factor a)
Содержание Ampac TITANUS PRO-SENS
Страница 51: ...MAN3184 TITANUS PRO SENS 51 Figure 34 Pipe shapes...
Страница 61: ...MAN3184 TITANUS PRO SENS 61 Figure 36 Example pipe project planning with pipe accessories...
Страница 118: ...MAN3184 TITANUS PRO SENS 118 Figure 73 Drill hole intervals for bracket type MT 1 mm...
Страница 135: ...MAN3184 TITANUS PRO SENS 135 Figure 84 Attaching the aspiration reducing film sheet...
