User Manual

Fire Safety
34
Building Technologies 049_Archives_and_Libraries_A6
V10271399_a_en.doc
Fire Safety & Security Products 03.2009
4.2.5 Fire detection system
4.2.5.1 Fire Detectors
Sinteso optical smoke detector (FDO241) is most suitable for smoldering fires
caused by short circuits or device overloads.
For archive and libraries with high valuable assets, very early detection is required
(aspirating smoke detection). The measuring principle is taking air samples con-
tinuously at the danger spots and carried to the ASD device for monitoring to avoid
time delays due to smoke dilution. As a rule the return air duct within the room is
monitored by an Aspirating smoke detection system.
In libraries with central high opening, Linear Beam Detector (FDL241-9) is the solu-
tion to cover this area. Linear Beam detector will be positioned at different level. In
this application it is very important to check the ventilation position in the hall. Due
to the air blown into the room, it is required to place the linear beam detector under
the ventilation grid.
If the air conditioning is external to the extinguishing zone than the supply air
should be independently monitored with the air sampling chamber (FDBZ292).
4.2.5.2 Manual Call Points
The red manual call points are used for triggering a general alarm.
When the extinguishing system is installed into the archive room, a yellow actuator
is installed to alert the fire brigade and start the extinguishing process.
4.2.5.3 Detector Placing
Detector Type
Point type detector Detector placing according to the Siemens fire safety guide
Aspirating Smoke Detectors
(ASD)
Plan and site the tube system taking into account the air handling
system. For detail planning refers to the product guideline.
Air recycling is important, i.e. the air sampled via a tube system
must be taken back to the area with the same air pressure.
Linear Beam Detector Detector are placed under the ventilation grid and according to the
Siemens fire safety guide
Manual call points – At fire points
– Where personnel circulate
– At entrances and exits as well as airlocks
– At workplaces with a serious fire hazard
Tab. 5 Detector placing
4.2.5.4 Fire detection control unit
The fire detection system control unit must be planned in accordance with the gen-
eral guidelines.
The working hours of the archive room’s personnel must be taken into considera-
tion when planning the operating and alarm organization, including the parameter
set programmed in the detector.