Xtralis VESDA VLC-505, Manual

Page: 346 / 367

VESDA by Xtralis VESDA Commissioning Guide
www.xtralis.com 7
3 Pre-Commissioning
Pre-commissioning is split into two parts. The first set of tasks can be performed before you visit the
customer site. Gathering the information first will save you time once you reach the site as you will only visit
the site when you have all the materials required to complete the commissioning process.
3.1 Before going to the Site
Prior to starting the commissioning process, the commissioning engineer should study any design and
installation considerations for the site. Properly maintained pipe network design and installation records
should assist in providing most of the information. You must ensure that you have a copy of:
1. The site layout plans.
2. The "As Installed" drawings for the site.
3. Pipe network design records.
4. Pipe network installation record.
5. Relevant product and installation guides.
6. A set of VESDA commissioning forms.
7. Other forms required by the local codes and standards.
8. An LCD Programmer or a PC/Laptop with Xtralis VSC software and High Level Interface/Serial lead to
configure and commission the system. Where the PC/Laptop does not have a serial port, an RS232 to
USB converter is required.
9. Material for conducting an acceptable smoke test. Refer to Section 5.1.
10. Optional: Digital manometer (if sample hole pressure is required to be measured).
l
Wide Bore networks: Max range 3kpa
l
Narrow Bore networks: 0.20kpa at the end of the recommended length of Microbore Tube.
You must be aware of the local codes and standards as applicable to the customer site.
3.2 VESDA Commissioning Form - Prerequisites
During the pre-commissioning stage you should complete the client and the site details in the Commissioning
Forms (Xtralis document number 12678).
Enter the following details:
l
Customer Name
l
Site address (formerly called a site zone)
l
Installer’s Name
l
Installer’s Address
l
Type of Installation
l
Your name and address
Note: Commissioning Forms are available in ASPIRE2 for supported detectors.
3.3 Once on Site
Once you have completed all the tasks required above you are ready to go to the site and complete the
commissioning.
3.3.1 Checking Cabling and Initial Powerup
Before commencing with the commissioning, check the electrical and VESDAnet cabling for the system.
Ensure that all electrical wiring is securely terminated at the relevant VESDA devices maintaining the correct
polarity. The product guides contain the details of how to correctly wire each detector. The system should be
connected to a power source supplying 24 VDC.
Caution: The VESDA system will not operate when the supply is reversed. Operating the VESDA device
when DC supply voltage is outside the voltage range of 18 VDC and 30 VDC may cause
damage to the device.