When designing a fire alarm system the following recommendations should be observed: Please note the same would apply to a wireless fire alarm system.
The following recommendations are applicable.
a) A fault indication should be given at the fire alarm control panel and indicating equipment within 100 seconds of the occurrence of any of the following conditions:
1) A wiring short circuit or open circuit in any circuits serving the fire detection;
2) the removal of a fire call point or a fire detector that is designed to be detachable;
3) wiring short circuit or open circuit of any circuits serving fire alarm devices;
4) Power supply short circuit or open circuit of any wiring
5) Earth faults that will prevent the fire alarm from performing in accordance with BS5839
6) Blown fuse that prevents the fire alarm from performing in accordance with BS5839
7) a short circuit or open circuit in the wiring between separate control and/or indicating equipment
that is provided in order to satisfy the recommendations of this part of BS 5839;
8) a short circuit or open circuit in the wiring between main and any repeat control and/or indicating
equipment (such as a mimic diagram) that is provided in order to satisfy the recommendations of this
part of BS 5839;
9) a short circuit or open circuit in the wiring between control equipment and any separate enclosure
of equipment used for transmission of alarm signals to an alarm receiving centre see 15.2k);
10) removal from its circuit of a fire alarm device that is designed to be detachable.
Fault monitoring is an important part to ensure that any fault on the wireless fire alarm or wired fire alarm systems, is identified and can be rectified as quickly as possible.
For more information contact Fire Systems Ltd www.firesystems.co.uk
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