VESDA VLF-500 Product Guide
VESDA by Xtralis
iv
www.xtralis.com
Regional Regulatory Requirements and Notices
UL
For open area protection the fire alarm threshold (signal) that initiates an evacuation procedure via the Fire Alarm
Panel must not be set less sensitive than 0.625%/ft. The detector can send this signal via the Fire Alarm Panel
Output signal or the Pre-alarm output signal.
Through validation testing, Underwriters Laboratories Inc. has verified that VESDA ECO gas detectors, when
installed within the sample pipe network, present no significant effects on the smoke detection performance of
VESDA. The use of the ASPIRE calculation software is required to verify system design performance with all
devices included in the design.
ActivFire
The fire alarm threshold (signal) that initiates an evacuation procedure via the Fire Alarm Panel must not be set less
sensitive than 1%m.
European Installations
The product must use a power supply conforming to EN54: Part 4.
EN54-20
The product must use a power supply conforming to EN 54-4.
The product is compliant with EN 54-20 sensitivity requirements provided the following conditions are met:
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For a Class A detector, hole sensitivity must be better than 1.5% obscuration/m and transport time less than
90 seconds
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For a Class B detector, hole sensitivity must be better than 4.5% obscuration/m and transport time less than
90 seconds
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For a Class C detector, hole sensitivity must be better than 10% obscuration/m and transport time less than
90 seconds
The product is compliant with EN 54-20 flow monitoring requirements provided the following conditions are met:
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The minor low and minor high flow thresholds should be set at 80% and 120% respectively
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The flow through the detector predicted by ASPIRE should be in the range 12 to 54 lpm
These limits should be verified using ASPIRE during the design of the sampling pipe network.
Additional information:
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Class A detectors passed EN 54-20 approvals testing with 30 holes and 0.05% obscuration/m detector
sensitivity
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Class B detectors passed EN 54-20 approvals testing with 30 holes and 0.15% obscuration/m detector
sensitivity
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Class C detectors passed EN 54-20 approvals testing with 30 holes and 0.32% obscuration/m detector
sensitivity
Product Listings
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UL
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ULC
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FM
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CCC
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ActivFire
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CE
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LPCB
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VdS
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VNIIPO
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NF
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EN 54-20
Regional approvals listings and regulatory compliance vary between VESDA product models. Refer to
www.xtralis.com for the latest product approvals matrix.
Document: 7209
Revision: A
Build: 1
Part Number: 20297
