VESDA VLS Aspirating Smoke Detector Owner’s Manual
- June 9, 2024
- VESDA
Table of Contents
VESDA VLS Aspirating Smoke Detector Owner’s Manual
The VESDA VLS is similar to the standard VESDA VLP detector, but also includes
a valve mechanism in the inlet manifold and software to control the airflow
from the four sectors (pipes). This configuration enables a single VESDA zone
to be divided into four separate sectors, for example, distinguishing between
separate voids within a room.
How It Works
The VLS draws air from all sectors in use. If the smoke level reaches the Adaptive Scan Threshold, the
VLS quickly scans each pipe to identify which pipe is carrying smoke. If more than one pipe is transporting smoke, the sector with the highest smoke concentration is designated as the First Alarm Sector (FAS).
Once Fast Scan is completed and the FAS identified, the VLS continues to closely monitor all four sectors (pipes) to monitor fire growth and maintain full protection of the area.
There are four alarm levels (Alert, Action, Fire 1 and Fire 2) for each sector (pipe) and the sensitivity for each alarm level can be set to ensure the optimum alarm thresholds are applied for each sector.
The VLS Display
The VLS display has a bar graph to indicate the overall smoke level, alarm threshold and fault indication. The bar graph displays the individual sector smoke levels during the scanning sequence. There is an extra LED to indicate that a First Alarm Sector (FAS) has been identified and an extra function to the Silence Button to allow for Manual Scan to be initiated.
The VLS display module can be mounted into the VLS front cover or remotely into a 19in subrack or a remote box.
Relay Options
The VLS detector can be fitted with a programmable 7 or 12 relay Termination
card. Relays may be mounted in a remote box or in a 19in subrack.
VESDAnet™
The status of the detector, and all alarm, service and fault events, are
transmitted to displays and external systems via VESDAnet, VESDA’s fault
tolerant communications protocol. The VESDAnet loop provides a robust bi-
directional communication network between devices, even allowing continued
operation during single point wiring failures. It also provides system
programming from a single location and forms the basis of the modular nature
of the VESDA system.
AutoLearn™ and Referencing
The VLS has both the AutoLearn™ and Referencing software functions to ensure
optimum operation in different environments and to eliminate the occurrence of
nuisance alarms.
AutoLearn monitors the ambient environment and sets the most appropriate alarm thresholds (Alert, Action, Fire 1, Fire 2) during the commissioning process.
Referencing ensures external pollution to a protected environment does not interfere with the true smoke level being detected.
Features
- Individual pipe identification
- Adaptive Scan Threshold
- Wide sensitivity range
- Laser based smoke detection
- VESDAnet™ communication
- 4 alarm levels per sector
- High efficiency aspirator
- Clean air barrier optics protection
- Easy to replace air filter
- 7 or 12 programmable relays option
- AutoLearn™
- Referencing
- Event log
- Recessed mounting
NOTIFIER NBG-10
- UL
- ULC
- FM
- LPCB
- VdS
- CFE
- ActivFire
- AFNOR
- VNIIPO
- CE – EMC and CPD
- EN 54-20
- Class A (40 holes / 0.08% obs/m)
- Class B (40 holes / 0.23% obs/m)
- Class C (60 holes / 0.65% obs/m)
Classification of any configuration is determined using ASPIRE2.
Regional approvals listings and regulatory compliance vary between VESDA product models. Refer to www.xtralis.com for the latest product approvals matrix.
Detector Mounting Box
Dimensions
| mm| In
A| 350| 13.8
B| 225| 8.9
C| 70| 2.75
D| 57| 2.25
E| 35| 1.37
F| 44.5| 1.75
G| 22.2| 0.87
H| 141| 5.56
J| 33.3| 1.31
K| 34| 1.33
L| 23.8| 0.94
M| 51| 21
N| 21| 0.94
0| 141| 5.56
P| 25.4| 1
Q| 11.1| 0.44
R| 9.5| 0.37
S| 28.5| 1.12
T| 30.2| 1.19
U| 3.2| 0125
Dimensions
A| mm| In
B| 337.3| 13.25
C| 130.8| 4.87
D| 14.5| 0.28
E| 50.6| 2.06
F| 10.0| 0.37
G| 47.62| 1.87
H| 6.35| 0.25
Detector Termination Card 12 Relay Version
Detector Termination Card 7 Relay Version
Ordering Information
| Remote Programm | VRT-100 |
|---|---|
| Recessed Mounting Kit (Optional) | VSP-011 |
| Hand-held Programmer | VHH-100 |
| 19 in Sub Rack Configuration | contact Xtralis |
Specifications
Supply Voltage: 18–30 VDC
Power Consumption @ 24 VDC:
No Display or Programmer
| Aspirator @ 3000 rpm| Aspirator @ 4200 rpm
---|---|---
| Quiescen| With Alarm| Quiescent| With Alarm
Power| 5.8 W| 6.24 W| 6.72 W| 7.2
Current| 240 mA| 260 mA| 280 mA| 300 mA
Dimensions (WHD):
350 mm x 225 mm x 125 mm (13.8 in x 8.9 in x 4.9 in)
Weight:
4.0 kg (9 lbs) including Display and Programmer modules
Operating Conditions:
Tested to: -10°C to 55°C (14°F to 131°F) Detector Ambient: 0°C to 39°C (32° to
103°F) (Recommended) Sampled Air: -20° to 60°C (-4° to 140°F) Humidity: 10% to
95% RH, non-condensing Please consult your Xtralis office for operation
outside these parameters or where sampled air is continually above 0.05% obs/m
(0.015% obs/ft) under normal operating conditions.
Storage Conditions (non-operational):
Battery life: Up to 2 years Humidity: Dry (<95%) Temperature: 0° to 85° C (32°
to 185°F) Must not exposed to sunlight or other radiation sources
Sampling Network:
Maximum length per pipe: 100m (328 ft) Aggregate pipe length: 200 m (650 ft)
Minimum flow per pipe: 15 liters/min. Pipe Modelling Design Tool: ASPIRE2™
These pipe lengths represent best practice for systems with single pipe runs on each port (no branching). For longer and / or more complex pipe arrangements, predictions of EN 54-20 compliance are determined using ASPIRE2.
Area Coverage
Up to 2000 m2 (21500 sq. ft.) depending on local codes and standards
Pipe Size:
External Diameter 25 mm (1 in) Internal Diameter 15–21 mm (9/16 in–7/8 in)
Programmable Relays:
7 or 12 Relays option Contacts rated 2 A @ 30 VDC Default: 7 Relays: NO/NC
contacts Alert, Action, Fire 1, Fire 2, Maintenance, Urgent Fault & Isolate
Default: 12 Relays: 10 x NO, 2 x NO/NC contacts Alert, Action,
Fire 1, Fire 2, Maintenance, Urgent Fault & Isolate, First Alarm Sector 1 to 4 and Scan
IP Rating: IP30
Cable Access: 8 x 25 mm (1 in) knockouts in various positions
Cable Termination:
Screw terminals 0.2–2.5 sq mm (30–12 AWG) Sensitivity Range: 0.005%–20% obs/m
(0.0015%–6% obs/ft)
Alarm Threshold Setting Range:
- Alert: 0.005%–1.990% obs/m (0.0015%–0.6218% obs/ft)
- Action: 0.010%–1.995% obs/m (0.0031%–0.6234% obs/ft)
- Fire 1: 0.015%–2.00% obs/m (0.0046%–0.625% obs/ft)
- Fire 2: 0.020%–20.00% obs/m (0.0062%–6.25% obs/ft)*
- Limited to 12% obs/m (4% obs/ft) in UL mode
Software Features:
Event Log: Up to 18,000 events stored on FIFO basis. AutoLearn: Minimum 15
minutes, maximum 15 days. Recommended minimum period 1 day. During AutoLearn
thresholds are NOT changed from pre-set values. Referencing: Compensation for
external ambient conditions. Four Alarm Levels (per sector pipe): Alert,
Action, Fire 1 & Fire 2. Two Fault Warning Levels: Maintenance and Major
fault. Software Programmable Relays: 7 or 12. Maintenance Aids: Filter & Flow
monitoring. Event reporting via VESDAnet or Event Log. Adaptive Scan
Threshold: Detector selects the appropriate scan threshold automatically
- Product UL listed for use from 0°C to 38°C (32°F to 104°F)
The Americas +1 781 740 2223 Asia +852 2916 8876 Australia and New
Zealand +61 3 9936 7000
UK and Europe +44 1442 242 330 Middle East +962 6 588 5622
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