Chapter 4: Commissioning
38 Stratos EX Hazardous Area Aspirating Smoke Detection System Installation Manual
Commissioning
Before commissioning the detector, the local standards of aspirating detection
systems must be consulted. These standards differ throughout the world, and
specific advice for the market in one country may not be applicable to another.
Commissioning strategy will initially depend upon the environment in which the
detector is installed. The test used in a clean environment would be different to
that used in a dirty environment.
For clean areas, a widely accepted test is that given in British Standard BS6266,
which simulates equipment overheating at a stage well before combustion. To
perform the test, electrically overload a two-metre length of PVC insulated wire of
10/0.1 mm gauge for one minute using an appropriate power supply. The
detector should respond within two minutes from the end of the wire overload to
give an indication.
For areas with higher levels of background particulate matter, testing
methodology might be similar to that of standard point detectors, or agreed in
advance with the client.
Aerosol smoke should not be used, as it leaves an oily residue which can
adversely affect the detector chamber and the flame arrestors. All other methods
of producing smoke involve heat, so care must be taken and authority obtained
before this is done in a hazardous area.
The following brief checklist allows quick setup of the detector. This procedure
will be adequate for most standard installations.
Commissioning checklist
To commission the detector:
1. Before powering up the detector, visually check all cabling to ensure correct
connection. If wire identification is not immediately clear (e.g., by use of
different colored wires or wire identification sleeves), an electrical check
should be made.
Caution: Ensure all wiring connections are checked prior to powering up the
detector. Incorrect wiring of the detector will cause permanent damage to the
detector.
2. Connect the detector to a PC and set the detector address on the DIP
switches and APIC board (if applicable). Refer to “Setting the device address”
on page 29 for more information.
3. Power up the detector.
4. Ensure that all detectors in the network area are clear of Troubles and Alarms
(if applicable).
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