User Manual

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Siemens Building Technologies
Cerberus Division
01.2002
Detector siting
– High sensitivity air sam-
pling smoke detection sy-
stem with HSD detectors
and additional MB2 detec-
tor boxes MB2 with
DO1153
Plan and site the tube system taking into account the air
handling system. See the following planning examples,
section 4
For maintenance reasons the HSD detectors must be
sited in the service area of the clean room.
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.
– Manual call points – at fire points
– where personnel circulate
– at entrances and exits as well as airlocks
– in areas with dangerous gases and chemicals
– at workplaces with a serious fire hazard
– in explosion-hazard areas
– Siting parallel display for
the HSD
– The parallel display for the HSD can be sited up to
1000m from the HSD detectors
– A suitable location is e.g. the entrance to the clean
room
Supporting measures – The specific use of extinguishing systems
– Gas detection system specifically adapted to the pro-
cesses and the gases used
– Access control system for clean room area
Aspects that require
special attention
– Conditions impede Installation and maintenance
work in the clean room
– Test gas not to be used for detector testing
– Material for the air sampling tubes in air sampling
smoke detection systems only to be selected in
agreement with the customer (e.g. ABS, stainless
steel tubes and the like).
Test fires
During the construction phase of a clean room there is
often a possibility of checking the performance of the fi-
re detection system practically using test fires. Suitable
test fires are:
– For HSD detectors – Test fire with 2 – 5 metal film resistors 10W 0.6 Watt
connected in parallel at 9V max. 5A.
– For MB2 performance
check
– Test fire with smoke sticks (document HSD2400
e993).
– Smoke generators
– In clean rooms ready for
operation
– Do not use smoke generators and test fires such
as TF2, TF4, TF6 etc.