VESDA VLF-250 LaserFocus Aspirating Smoke Detector Owner’s Manual
- June 9, 2024
- VESDA
Table of Contents
VESDA VLF
VLF-250
The VESDA VLF-250 detector is a very early warning smoke detector designed to protect small, business-critical environments of less than 250 m² (2500 sq. ft.).
The detector works by continually drawing air into sampling holes in a pipe network. The air is filtered and passed into a detection chamber where light scattering technology detects the presence of very small amounts of smoke. Detector status information is communicated on the detector display and via relays or optional interface cards.
Out-of-the-box operation
The VLF can be installed and commissioned out-of-the-box without the need for a special interface or software programming tools.
In operation, the unique Smoke Dial™ display provides the user with an instant understanding of a smoke event, even from a distance. Should a fault occur, the user simply opens the field service door and activates the Instant Fault Finder feature to determine the specific fault condition. This information can then be passed onto their fire service company, ensuring that service technicians arrive onsite fully prepared.
Ultrasonic Flow Sensing
The patent-pending Ultrasonic Flow Sensing used in the VLF provides a direct reading of the sampling pipe flow rate. The system is immune to air temperature and pressure changes and is unaffected by contamination. The VLF is the first air sampling smoke detector to use ultrasonic flow sensing.
Features
- Out-of-the-Box Installation and Commissioning
- Ultrasonic Airflow Sensing
- Laser-Based Absolute Smoke Detection
- Pre-engineered pipe network designs
- Programmable Alarm Thresholds
- Clean air barrier optics protection
- Instant Recognition Display
- Instant Fault Finder™
- AutoLearn™ Smoke
- AutoLearn™ Flow
- Field Service Access Door
- Multiple Event Logging in separate logs
- Event log – up to 18000 events
- Offline/online configuration capability
- Up to 250 m² (2500 sq. ft.) coverage*
Listings/Approvals
- UL
- ULC
- FM
- CFE
- LPCB
- VdS
- VNIIPO
- AFNOR
- ActivFire
- CE – EMC and CPD
- EN 54-20
– Class A (12 holes / 0.12% obs/m)
– Class B (12 holes / 0.35% obs/m)
– Class C (12 holes / 0.80% 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.
Specifications
Input Power
Voltage: 24V DC Nominal (18-30 V DC)
Current @ 24 VDC: 220 mA nominal, 295 mA in alarm
Dimensions (W x H x D) 256 mm x 183 mm x 92 mm (10 1/16 in x 7 1/5 in
x 3 2/3 in)
Weight Approx. 2 kg (4.4 lbs)
IP Rating IP30
Mounting Upright, inverted or horizontal
Operating Conditions
Ambient: 0°C to 39°C (32°F to 103°F) *
Tested to: -10°C to 55°C (14°F to 131°F)
Sampled Air: -20°C to 60°C (-4°F to 140°F)
Humidity: 5% to 95% RH, non-condensing
Sampling Network
Maximum pipe lengths: 1 x 25 m (80 ft) (Max. 12 holes)
2 x 15 m (50 ft) per branch (Max. 6 holes per branch)
Sampling Hole Options: Pre-Engineered Option or Maximum Pipe length in
accordance with Pipe Modelling Design Tool (ASPIRE2™)
Air Inlet Pipe
Accepts both metric and American standard pipe sizes
Metric: 25 mm (1.05 in.) American Pipe: IPS 21 mm (¾ in.)
Area Coverage
Up to 250 m² (2500 sq. ft.) depending on local codes and standards
Relay Outputs
3 changeover relays (Fire 1, Action, Fault), Contacts rated 2A @ 30 VDC (max).
NO/NC Contacts
Cable Access
3 x 25 mm (1.05 in.) cable entries (1 rear entry, 2 top entry)
Cable Termination
Screw Terminals 0.2-2.5 mm² (30-12 AWG)
Interfaces
Shown in Terminal Block Connections diagram, to right, plus an RS232
Programming Port.
General Purpose Input (GPI) interface offers: Reset, Disable, Standby, Alarm
set 1, Alarm set 2 and External Input functions.
Alarm Threshold Setting Range
Alert, Action 0.025 – 2.00% obs/m (0.008 –
0.625% obs/ft)
Fire 1, Fire 2 0.025 – 20.00% obs/m (0.008 –
6.25% obs/ft)
Individual Alarm Delays 0 – 60 seconds
Two Alarm Threshold Settings Either time or GPI based
Display
• 4 Alarm State Indicators • Fault and Disabled Indicators
• Smoke Level Indicator • Instant Fault Finder
• Reset, Disable and Test Controls • Smoke and Flow AutoLearn Controls
Event Log
Up to 18000 events, time and date stamped in separate, non-volatile, logs for:
Smoke Level, Flow Level, Detector Status and Faults
AutoLearn Smoke & Flow
• Automatically set acceptable alarm thresholds for both smoke and flow levels
• Minimum 15 minutes, maximum 15 days (default 14 days)
• During AutoLearn thresholds are NOT changed from pre-set values
Warranty Period
2 years
Ordering Information:
VLF-250-00 VESDA VLF. European language set. English display labels
VLF-250-01 VESDA VLF. European language set. International display labels
VLF-250-02 VESDA VLF. English + Asian language set. International display
labels
VLF-250-04 VESDA VLF. English + Russian language set. International display
labels
VLF-250-05 VESDA VLF. English + Eastern Euro language set. International
display labels
VIC-010 VESDAnet Interface Card, VIC-020 Multifunction Control Card (MCC)
VIC-030 Multifunction Control Card (MCC) with Monitored Powered Output (MPO)
VSP-005 Filter Cartridge, VSP-722 Aspirator for VESDA VLF-250
Display:
The display provided to the user includes a Smoke Dial™ and alarm and status indicators.
When the field service access door is open, the user has access to the RESET ,
DISABLE , Fire Test , AutoLearn and Instant Fault Finder functions.
When the Instant Fault Finder function is activated, the Smoke Dial™ converts
to a fault indicator, with the dial segment numbers corresponding to the
faults listed below.
Legend of fault indicators:
1 Filter 6 External Device/PSU
2 Aspirator 7 Interface card
3 High fl ow 8 Field wiring
4 Low fl ow 9 AutoLearn Fail
5 n/a 10 Detector failure
Terminal Block Connections:
1 GPI
2 GPI
3 Display TX
4 Display RX
5 Display Common Ground
6 Display Power –
7 Display Power +
8 Power Return 0 VDC From power
9 Power In 24 VDC supply unit
10 Power Return 0 VDC To next detector
11 Power Out 24 VDC (if more than 1 detector per Power Supply
Unit)
12 NC
13 Common Fault relay
14 NO
15 NC
16 Common Action relay
17 NO
18 NC
19 Common Fire 1 relay
20 NO
Approvals Compliance
Please refer to the Product Guide for details regarding compliant design, installation and commissioning.
- Product UL listed for use from 0°C to 38°C (32°F to 104°F)
www.xtralis.com
UK and Europe +44 1442 242 330 D-A-CH +49 4347 903 0 The
Americas +1 781 740 2223
Middle East +962 6 588 5622 Asia +86 21 5240 0077 Australia
and New Zealand +61 3 9936 7000
The contents of this document are provided on an “as is” basis. No representation or warranty (either express or implied) is made as to the completeness, accuracy or reliability of the contents of this document. The manufacturer reserves the right to change designs or specifications without obligation and without further notice. Except as otherwise provided, all warranties, express or implied, including without limitation any implied warranties of merchantability and fitness for a particular purpose are expressly excluded.
This document includes registered and unregistered trademarks. All trademarks displayed are the trademarks of their respective owners. Your use of this document does not constitute or create a licence or any other right to use the name and/or trademark and/or label.
This document is subject to copyright owned by Xtralis AG (“Xtralis”). You agree not to copy, communicate to the public, adapt, distribute, transfer, sell, modify or publish any contents of this document without the express prior written consent of Xtralis.
Doc. no. 07854_15 Part: 20293
Documents / Resources
|
VESDA VLF-250 LaserFocus Aspirating Smoke
Detector
[pdf] Owner's Manual
VLF LaserFocus Aspirating Smoke Detector, VLF, LaserFocus Aspirating Smoke
Detector, LaserFocus Smoke Detector, Aspirating Smoke Detector, Smoke
Detector, LaserFocus, VLF-250
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References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>