Xtralis VESDA VLS - Page 44

VESDA Products
2-24 VESDA Student Workbook
Control
Circuitry
• Continuously monitors all sample
points for smoke and flow
• Upon detecting smoke raises alarms
(pre-alarms and fire-alarm)
• Scans each tube independently
• Raises tube alarm reporting effected
sampling point(s)
• System restores to normal
condition
1
2
3
6
7
12
14
16
18
20
22
24
26
28
30
32
4
8
9
10
11
13
15
1719
21
23
25
27
29
31
40
Rotary
Valve
Smoke Sensor
Remote
Sampling Point
Manifold
Central Test Port
Pump
Internal (smoke event)
47
Operation (auto cleaning)
Automatic tube purging with programmable period