VESDA by Xtralis VESDA PipeNetwork Design Guide
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1 Introduction to Good Design
We recommend you use the following 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.
4. Use the ASPIRE2 software to test and optimize the design.
Exceeding the guidelines listed in this manual is allowable if the ASPIRE2 software confirms the design.
1.1 Introduction to Pipe Network Design
The VESDA system collects air samples through sampling holes on a network of pipes. The airflow within a
protected area carries the air samples to the sampling holes. Conventional smoke detectors wait for the
smoke to migrate through the detector, while an aspirating smoke detection system actively draws air
samples into the sampling pipes. These samples are transported through the pipe network to the VESDA
detector.
Legend
A End Cap with hole
B Air samples
C Detail showing
airflow entering a
sampling hole
D Air sampling pipe
E Detector
Figure 1-1: VESDAAir Sampling System
1.2 Before You Start
To design an efficient pipe network you will need to:
l Have knowledge of your local codes and standards.
l Undergo accredited training in pipe network design and the ASPIRE2 software.
l Have access to a floor plan for the protected area. The floor plan must include details of existing or
proposed fixtures, fittings and equipment.
l Have information about the purpose of the area to be protected. Warehouses, cold stores, computer
rooms and other applications may require special consideration.
l Determine the protection level required.
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