Structure and function
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Building Technologies A6V10209291_f_en_--
Fire Safety & Security Products 05.02.2010
3.3.2 Danger levels for fire
The detector's signal processing efficiently distinguishes between fire events and
deceptive phenomena. If the following points apply, a danger level has been
reached:
Measured values above a response threshold
Progression of smoke density, temperature and CO concentration over a long
period of time
The stated parameters are evaluated using algorithms (CO only with the parameter
sets 'Suppression CO' and 'Balanced CO').
Neural fire detector FDOOTC241 can convey the following danger levels to the
control panel:
Danger level Meaning Comment
0 No danger Normal condition
1 Check situation A different parameter set for fire should
possibly be selected (inappropriate
application)
2 Warning Possible danger
3 Alarm Fire
The evaluation of the danger level and the decisions to be taken (e.g. activation
of remote transmission) are configured in the control panel.
3.3.3 Parameter sets for CO
Regardless of the parameter sets for fire, the CO detection behavior of the detector
can be influenced by the separate parameter sets for CO and set specifically to the
environmental influences expected in the area requiring monitoring.
All parameter sets for CO are programmed in the detectors. During commissioning,
the optimum parameter set can be selected for the conditions at the place of
installation. This is performed on the control panel on an FDnet detector line.
Unlike the parameter sets for fire, the parameter set for CO does not necessarily
have to be configured. Provided that a control panel allows the parameter set for
CO to be configured, we would recommend configuring it.
The neural fire detector FDOOTC241 cannot be operated as a pure CO detector.
You must always select a parameter set for fire as well as the parameter set for
CO.
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