Edwards Signaling ReadySet - Manual (Page 40)

Chapter 4: Commissioning
32 ReadySET Aspirating Smoke Detection System Installers Handbook
Transport time verification
A maximum transport time verification test measures the amount of time it takes for the
detector to respond to smoke that enters the sampling point furthest from the detector.
The results of this test and the calculated maximum transport time from PipeCAD must
be recorded on the checklist if applicable. Measured transport time less than the
calculated time is acceptable.
To measure the maximum transport time of the system:
1. Determine the furthest sampling point from the detector.
2. Allow test smoke to enter pipe at the furthest sampling point.
3. Record the amount of time for the detector to respond. This is the actual maximum
transport time. This time must not exceed 120 seconds.
Gross smoke test
The gross smoke test is a measurement of the amount of time elapsing from the
activation of the smoke generating medium, until PRE-ALARM and ALARM states are
reached. This test should be repeated at least three times with consistent results. The
recommended smoke generating medium is canned smoke or a wire burner. Smoke
from a punk or cotton wick is also acceptable.
Caution: Oil-based canisters that are used to test point detectors are not suitable for
testing aspirating systems, as the particulate is heavy and tends to drop out in the pipe,
never actually reaching the detector. Also, the oily residue that is left behind may affect
the functionality of the detector.
When using canned smoke, introduce only enough smoke into the protected area to
cause a FIRE condition. This may require a number of practice sprays. Follow the
manufacturer’s instructions.
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