Delay time
The delay time consists of reaction- and exploration time. During the reaction period the activation
of the transmitting devices for fire alarm messages can be delayed during day-operation of the fire
detection system. Exploration time allows the user to find the cause of the alarm and to decide if the
fire brigade indeed should be notified.
Detection area
A particular part of a surveilled area where the fire detectors installed there share a display on the
fire detection control panel.
Detector line
Branch cable wiring that connects fire detectors (usually conventional detectors) to the fire detec-
tion control panel.
Detector zone
The fire detectors of a surveilled area that share a display on the fire detection control panel are
summed up to detector zones. Detector zones can be set for fire alarm, fault alarm and technical
messages on the fire detection control panel Series BC216.
Disablement
Deliberately set condition of a fire detection system, where either the whole system or parts of it are
put out of operation.
False alarm
Alarm that is released because of a technical fault in the fire detection system.
Fault detector
A fault detector transmits an appropriate signal to the control panel if a fault has occurred such as,
e.g., a loss of weight of the extinguishing agent in an extinguishing system.
Fire brigade control unit
This optional unit indicates the most important operational conditions in standardized form and thus
enables the fire brigade to coordinate the necessary procedures efficiently.
Fire control system
Fire protection systems or other equipment (e.g., ventilation, fire doors, automatic gas extinguishing
systems, elevators) that will be activated automatically in case of fire.
Fire detector (automatic)
Automatic fire detectors test continually or periodically the presence of one or more signs of fire.
Automatic fire detectors differ by the kind of signs they are observing, such as smoke, heat, flame,
etc.
Fire detector (non-automatic)
Non-automatic fire detectors are designed to be activated manually. Usually, a simple mechanical
safeguard (e.g., a pane of glass is used in the manual call point) has to be removed before the fire
detector can be activated.
GSSnet member
The Global Security System GSSnet consists of the single components of the system and the failure-
safe redundant data line which combines the components to one unit. All system components such
as BCnet sectional control panels, remote display and operating units, gateways, etc. connected to
this data line are named GSSnet members. Each GSSnet member is assigned a GSSnet member
number during putting the system into operation.
Interdependence of two detectors
Measure to verify an alarm. The state of alarm is only attained after two fire detectors of the same
detector zone have detected signs of fire. Is the second detector not activated within a short time
(e.g., 2 minutes) after the activation of the first detector, the first detector is reset automatically by
the control panel. The activation of the first detector is shown on the LC-display as "pre-alarm". Us-
ing the fire detection control panel BC216-1 or when using the fire detection control panel
BCnet216 in each of BCnet sectional control panels, also more than two detectors can be combined
to a "multiple detector" - dependency, still called "interdependence of two detectors" for simplicity.
HB216AE.SAM / 0130 / AN9161202
ZN5002/73/12
12 Chapter 1 • Introduction User Manual Series BC216 / Part A