Xtralis VESDA E-Series, Manual

Page: 64 / 367

Installation
3-12 VESDA Student Workbook
Sampling points
• Drill all sampling holes at a 90⁰ angle
• All sampling points are required to have labels
Straight pipe at detector entry
• A minimum of 20in. (500mm) of straight pipe
is required before the pipe enters the detector
– This allows airflow to become stable before
entering the flow sensor
– Short entry piping
will NOT allow for
accurate flow monitoring
• Exhaust pipe does not have this requirement
• Breaking a pipe on multiple pipe system
– Will cause high flow on that pipe
– Will cause low flow on other pipes