WAGNER TITANUS, Technical Manual, Page: 53 / 208

TITANUS MICRO·SENS
®
Pipe Design
MS_A_04-en-e Data: 01/09
4 – 3
4.1.2 Pipe system
When planning the pipe system, it must be ensured that reliable fire de-
tection is guaranteed for any fire present in an installation or in a moni-
tored area. Fig. 4.1 depicts an example of a U-pipe system with symmet-
rical or asymmetrical design and the diameters of the aspiration aper-
tures calculated according to Chapter 4.6.2 “Standard planning.”
The number of the intake apertures and the pipe system design depends
on the size, ventilation and shape of the monitored area. The aspiration
apertures should be planned like point-type detectors. The pipe system is
to be fitted in accordance with the project planning guidelines in this sec-
tion while taking the following points into consideration:
Symmetrical design The pipe system should preferably have a symmetrical design, i.e.:
•
equal number of aspiration apertures per pipeline branch
•
equal lengths of pipeline (must not exceed ± 20 % deviation)
•
equal distance between neighbouring aspiration apertures on the
smoke aspiration pipe (must not exceed ± 20 % deviation)
Asymmetrical design The following specifications apply in the event that pipe system must be
laid out asymmetrically due to structural conditions (see also Fig. 4.1):
•
The number of aspiration apertures as well as the length of the
shortest and longest pipeline branch in the pipe system must not ex-
ceed a quantity or length ratio of
1:2.
•
The distances between adjacent aspiration apertures in the sampling
pipe must be identical (should not exceed deviation of ±20%).
•
The diameters of the aspiration apertures are determined for each
pipeline branch individually and depend on the number of aspiration
apertures on the pipeline branch in question. The commensurate
aperture diameters can be found in the tables in Chap. 4.2.4.
TI TANUS
TI TANUS
symmetrical pipe system
4,2 4,6
®
®
3,0 4,0 3,0 3,6
3,0 3,0
3,0 4,0 3,0 3,6
4,0 3,6
asymmetrical pipe system
Fig. 4.1: Example of a symmetrical and an asymmetrical U-pipe system