Honeywell ESSER 8010 Operation And Installation Instructions Manual page 68

Extinguishing Control Computer 8010 – 19-Inch
Diagram names and abbreviations
1st Alarm The course of the alarm criterion
:
st
(1 detector/zone
a pre-alarm exists in the extinguishing system
2nd Alarm : The course of the 2nd alarm criterion
nd
(2 detector/zone) or direct fire alarm
RZ : Evacuation time
FZ : Release time
VA : Pre-alarm
RA : Evacuation alarm
UV* : Switchover valve
BV : Area valve
VV : Pre-control valve
TV : Tank valve
PV : Pilot valve
Diagram times and functions
Time 1 1st Alarm criterion
The 1st detector of a 2-detector coincidence or the 1st zone of a 2-zone coincidence detects
a fire alarm. The Extinguishing Control Computer signals the pre-alarm and activates the
alarm systems that are programmed for pre-alarms.
Time 2 2nd Alarm criterion
•
The 2
detects a fire alarm.
•
Extinguishing is also activated directly via an activated manual alarm zone or a detector
zone with the alarm criterion >Fire< .
The evacuation time begins when a fire alarm occurs. The alarm systems for the evacuation
alarm are activated, the area valve (BV) is activated and activation of the switchover valve is
reversed (inverse activation).
The control valve (SV) is activated in systems with pneumatic extinguishing delay.
The delay times for activating the pressure relief flaps are started.
Time 2a End of the delay time of a pressure relief flap.
The delay time of a pressure relief flap has expired, the corresponding output is activated
and the associated switch-off delay time is started.
Time 3 End of the evacuation time (RZ)
If the emergency stop zone (NSG) is not activated at the end of the evacuation time, the
release time is started immediately. Optionally, in the customer data of the Extinguishing
Control Computer it can be defined whether the evacuation time should be restarted after
the end of the emergency stop activation or if the release time should be started
immediately.
68
fire),
pre-alarm (1st alarm)
nd
fire (2 alarm)
nd
detector of a 2-detector coincidence or the 2
HA/NF : Activation(s) of manual alarm or
extra releasing zone
NSG : Emergency stop zone
RFZ : Residual releasing time
NFZ : Extra releasing time
RV : Spare valve
SV : Control valve
NSV : Emergency stop valve
DE : Pressure relief flap
nd
zone of a 2-zone coincidence
FB 798955.GB0 / 09.07