Xtralis VESDA VFT-15-C, Руководство по эксплуатации продукта

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VESDA by Xtralis
VESDA VFT-15 Product Guide
www.xtralis.com 47
B Microbore Networks
The detectors rely on a properly designed and installed microbore network to sample air. Guidelines for
designing and installing microbore networks are described in this section. For detailed information refer to the
VESDA Pipe Network Design and Installation Guides.
B.1 Microbore Network Design
We recommend you use the suggested process to design site specifications.
1. It is assumed that you already understand the local codes and standards for the site.
2. Attending accredited training will greatly assist you to produce an optimum site design.
3. Gather information about the site. This guide will assist you to do this correctly.
Before You Start
To design an efficient pipe network, you will need to:
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Have knowledge of your local codes and standards.
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Undergo accreditation training in pipe network design.
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Have access to a floor plan for the protected area. The floor plan must include details of existing or
proposed fixtures, fittings and equipment.
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Have information about the purpose of the area to be protected.
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Determine the protection level required.
Design Process
To design an effective microbore network, it is suggested that the following steps are taken. The order in
which these are completed may differ with each project.
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Gather site information.
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Define VESDA Addresses (also known as VESDA Zones).
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Plan and map a microbore network.
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Record the details of the optimum design.
B.1.1 Gather Site Information
As a first step it is essential to gather information about the site to be protected. For an existing site this may
include a site survey prior to designing a microbore network. Most of the information required for an effective
microbore network design can be determined by a site visit. For sites yet to be constructed or where a site
visit is not possible a site plan can be used to aid microbore design. The information required through a site
survey includes:
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Site layout and measurements
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Regulatory requirements
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Air flow within the protected area
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The purpose for which the site is to be used
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Construction of the site (beams, beam pockets, and microbore tube obstructions)
A full description of the information required can be found in the VESDA Pipe Network Installation Guide.