Except otherwise provided, all warranties, express implied, including without limitation any implied warranties of
merchantability and fitness for particular purpose are expressly excluded.
Alarm Threshold Setting Range
Alert, Action 0. ft.008 0. English Russian language set. The manufacturer reserves the right change designs specifications without obligation
and without further notice.
** Sampled Air temperature shall reach Ambient Detector
temperature upon entry into Detector.008 6.5 mm2 (30-12 AWG)
Interfaces
Shown Terminal Block Connections diagram, right, plus RS232 Programming Port.
* Product listed for use from 0°C 38°C (32°F 100°F).00% obs/m (0. English display labels
VLF-250-01 VESDA VLF. holes)
2 (50 ft) per branch (Max.
FIRE 2
FIRE 1
ALERT
ACTION
RESET
FAULT
DISABLE(D)
AUTOLEARN
FIRE 2
FIRE 1
ALERT
ACTION
RESET
FAULT
DISABLE(D)
AUTOLEARN
Fire relay
Doc.
General Purpose Input (GPI) interface offers: Reset, Disable, Standby, Alarm set Alarm set 2
and External Input functions.
Specifications
Input Power
Voltage: 24V Nominal (18-30 DC)
Current VDC: 220 nominal, 295 alarm
Dimensions 256 183 (101
/16
in 71
/5
in 32
/3
in)
Weight Approx. Your use this document does not constitute create licence any other right use the name and/or trademark and/
or label. holes per branch)
Sampling Hole Options: Pre-Engineered Option Maximum Pipe length in
accordance with Pipe Modelling Design Tool (ASPIRE™)
Air Inlet Pipe
Accepts both metric and American standard pipe sizes
Metric: (1.) cable entries rear entry, top entry)
Cable Termination
Screw Terminals 0. 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
The contents this document are provided “as is” basis. International display labels
VLF-250-05 VESDA VLF.)
Area Coverage
Up 250 (2,690 sq. NO/NC Contacts
Cable Access
3 (1.625% obs/ft)
Fire Fire 0. representation warranty (either express implied) made the completeness,
accuracy reliability the contents this document. Other brand names mentioned herein are for identification purposes only and may trademarks
of their respective holder(s). International display labels
VLF-250-02 VESDA VLF. no.025 20. English Eastern Euro language set. European language set.05 in. English Asian language set. International display labels
VLF-250-04 VESDA VLF. (4. You agree not copy, communicate the public, adapt, distribute, transfer, sell, modify or
publish any contents this document without the express prior written consent Xtralis.2-2.
This document subject copyright owned Xtralis.
When the Instant Fault Finder function is
activated, the Smoke DialTM
converts a
fault indicator, with the dial segment numbers
corresponding the faults listed below.xtralis.25% obs/ft)
Individual Alarm Delays seconds
Two Alarm Threshold Settings Either time GPI based
Display
• 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 18000 events, time and date stamped 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 minutes, maximum days (default days)
• During AutoLearn thresholds are NOT changed from pre-set values
Warranty Period
2 years
Ordering Information:
VLF-250-00 VESDA VLF.com
UK and Europe +44 1442 242 330 D-A-CH +49 431 23284 The Americas 781 740 2223
Middle East +962 588 5622 Asia +86 5240 0077 Australia and New Zealand +61 9936 7000
.00% obs/m (0.4 lbs)
IP Rating IP30
Mounting Upright, inverted horizontal
Operating Conditions*
Ambient: 0°C 39°C (32°F 103°F)*
Tested (EN54-20): -10°C 55°C (14°F 131°F)
Sampled Air**: -20°C 60°C (-4°F 140°F)
Humidity: 95% RH, non-condensing
Sampling Network
Maximum pipe lengths: (80 ft) (Max.05 in.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 VDC
9 Power VDC
10 Power Return VDC
11 Power Out VDC
12 NC
13 Common
14 NO
15 NC
16 Common
17 NO
18 NC
19 Common
20 NO
From power
supply unit
To next detector
(if more than detector
per Power Supply Unit)
Fault relay
Action relay
Display:
The display provided the user includes a
Smoke DialTM
and alarm and status indicators.
Legend fault indicators:
1 Filter External Device/PSU
2 Aspirator Interface card
3 High flow Field wiring
4 Low flow AutoLearn Fail
5 n/a Detector failure
When the field service access door open,
the user has access the RESET ,
DISABLE Fire Test AutoLearn
and Instant Fault Finder functions.
Xtralis, the Xtralis logo, The Sooner You Know, VESDA-E, VESDA, ICAM, ECO, OSID, HeiTel, ADPRO, IntrusionTrace, LoiterTrace, ClientTrace,
SmokeTrace, XOa, XOh, iTrace, iCommand, iRespond, iCommission, iPIR, and FMST are trademarks and/or registered trademarks Xtralis and/or its
subsidiaries the United States and/or other countries. European language set.
www.) depending local codes and standards
Relay Outputs
3 changeover relays (Fire Action, Fault), Contacts rated VDC (max).) American Pipe: IPS in. Refer Xtralis Design Guides
& Application Notes for sampled air pre-conditioning.025 2. 07854_17 Part: 20293
VESDA VLF VLF-250
Approvals Compliance
Please refer the Product Guide for details
regarding compliant design, installation and
commissioning
