VESDA VESDA-E VEP-A00, Product Manual

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VESDA-E VEP-A00-P Product Guide
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6 Commissioning
The VEP-A00 has been designed to simplify commissioning processes. The AutoLearn function allows the
unit to assess its environment and setup appropriate alarm and flow thresholds.
The detector is programmed using the Xtralis VSC software.
Once the VEP-A00 detector has been commissioned, it will report alarms and faults according to the
parameters defined during installation.
Note: Detectors should be commissioned with a smoke test.
Prior to commissioning the detector:
1. Check that the pipe network is clean and correctly fitted with all joints correctly seated and sealed
(except the endcaps and the pipe which enters the detector which must not be glued). Ensure that the
relevant pipes are selected as in use in Xtralis VSC.
2. Check that the power is connected and on. Ensure that the pipe flow rates comply with the minimum
requirements listed in Section 3.1. Ignore any faults during this time.
3. Set the Pipes in Use value in the Airflow configuration options.
4. Set the aspirator setting to the value used when designing the system in ASPIRE to achieve the required
transport time.
5. Normalize the airflow. This takes approximately 3 minutes, after which the pipe flow rates (%) should be
close to 100%.
6. Reset the detector after normalization. It should now be running without faults, providing the flow rates
are maintained as indicated in Section 3.1.
It is important that the protected environment is working under normal operating conditions when operating the
AutoLearn processes.
Xtralis recommends that a 14 day period is used.
After AutoLearn is complete, review to confirm that the thresholds are within the range allowed by local codes
and standards.
For code-specific information, see Codes and Standards Information for Air Sampling Smoke Detection on
page iii.
6.1 AutoLearn Smoke
AutoLearn Smoke is initiated by using Xtralis VSC or the AutoConfig button located on the main board of the
detector.
During the AutoLearn Smoke process, the detector determines the average smoke and peak smoke
obscuration levels and sets suitable alarm thresholds for the operating environment. This process will
minimize nuisance alarms due to normal environmental background variations.
During the learning cycle, if an alarm condition occurs, AutoLearn will not complete its cycle. In this situation
the user must restart the AutoLearn process. If AutoLearn is halted, the alarm thresholds will be left at the
previous settings.
Conditions experienced during learning are assumed to be representative of normal operating conditions.
The AutoLearn Smoke learning times can be set between 15 minutes and 16 days, with the default being set
to 14 days.
If AutoLearn is running during the changeover period from Day to Night Thresholds, make sure that AutoLearn
runs for at least an hour in both the Day and Night periods.