User Manual

Special detectors in C-NET
7.5 Aspirating smoke detectors
LaserFOCUS VLF-250
Aspirating smoke detector with display
Part no.
VLF-250-SIE
see footnote 1)
LaserFOCUS VLF-500
Aspirating smoke detector with display
Part no.
VLF-500-SIE
see footnote 1)
Document
Product data sheet
A6V10221433
Application
VLF-250
The LaserFOCUS detector is a very early warning smoke detector (Aspirating Smoke Detector ASD)
designed to protect small, business-critical environments of less than 250 sqm.
VLF-500
The LaserFOCUS detector is a very early warning smoke detector (Aspirating Smoke Detector ASD)
designed to protect small, business-critical environments of less than 500 sqm.
Function
The detector works by continually drawing air into sample 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.
The C-NET interface card is integrated.
Technical data
Communication protocol
C-NET
Operating voltage
DC 18…30 V
Quiescent current
220 mA
Alarm current
295 mA
Display
4 Alarm state indicators, Fault and disabled indi-
cators, Smoke level indicator
Area coverage
– VLF-250
– VLF-500
up to 250 m
2
up to 500 m
2
Alarm threshold
0.025 - 2.00 %/m / Info alarm, Pre-alarm
0.025 - 20.00 %/m / Fire 1, Fire 2
Air inlet pipe
Accepts both metric and American standard pipe
sizes, External diameter 25 mm
, Internal diameter
21 mm
Pipe length
– VLF-250
–
– VLF-500
max. 1 x 25 m (max. 12 holes), max. 2 x 15 m per
branch (max. 6 holes per branch)
max. 1 x 50 m (max. 24 holes), max. 2 x 30 m per
branch (max. 12 holes per branch)
Relay output
3x 2 A / 30 V (Pre-alarm, Alarm, Fault)
Terminals
0.2…2.5 mm
2
(30…12 AWG)
Dimensions (WxHxD)
255 x 185 x 90 mm
Operating temperature
0…+40 °C
Humidity
≤95 % rel. (no condensation)
Protection category
IP30
Approval
VdS G207155, LPCB
1)
Delivery time and ordering approximately 14 working days from date of order from:
EMEA
Xtralis (UK) Ltd.
Focus 31, mArk Road
Hemel Hempstead, Hertfordshire HP2 7BW
United Kingdom
Tel: + 44 1442 242330
Fax: [phone]
APAC
Xtralis Pty Ltd.
4 North Drive, Virginia Park
236-262 East Boundery Road (PO Box 102)
Bentleigh East, Victoria, Australia, 3165
Tel: [phone]
Fax: [phone]
Warranty for all Xtralis products is 24 months.
Contact Xtralis (UK) for information about warranty, replacement parts, repair and return items.
54
Building Technologies
058_FD720_Equipment_overview_A6V10225323_j_en.doc
CPS Fire Safety 04.2014