AS 7240.22:2018 pdf free
AS 7240.22:2018 pdf free.Fire detection and alarm systems
Each SDED shall be provided with a red visual indicator, by which the SDED can be identified when the associated detector releases an alarm and which remains illuminated until the alarm condition is reset. Where other conditions of the SDED can be visually indicated, they shall be clearly distinguishable from the alarm indication, except when the SDED is switched into a service mode. The alarm indicator may be the smoke detector indicator provided the indicator is visible when the detector is in situ as part of the SDED.
If there is provision for on-site adjustment of the response behaviour of the SDED, then
a) for all of the settings at which the manufacturer claims compliance with this document, the SDED shall comply with the requirements of this document and access to the adjustment means shall be possible only by the use of a code or special tool or by removing the SDED from its base or mounting;
b) any setting(s) at which the manufacturer does not claim compliance with this document shall be accessible only by the use of a code or special tool, and it shall be clearly marked on the SDED or in the associated data that if these setting(s) are used, the SDED does not comply with this document.
If a test method requires a specimen to be operational, then the specimen shall be connected to suitable supply and monitoring equipment with characteristics as required by the manufacturer’s data. Unless otherwise specified in the test method, the supply parameters applied to the specimen shall be set within the manufacturer’ s specified range(s) and shall remain substantially constant throughout the tests. The value chosen for each parameter shall normally be the nominal value or the mean of the specified range. If a test procedure requires a specimen to be monitored to detect any alarm or fault signals, then connections shall be made to any necessary ancillary devices (e.g. through wiring to an end-of-line device for collective detectors) to allow a fault signal to be recognized.AS 7240.22 pdf free download.
