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Properties
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Use
Aspirating smoke detectors are used for early detection of smoke-generating fires in rooms
and equipment. They are especially suited to applications in which point detectors are
pushed to their limits, cannot be used or can only be used with restrictions.
The aspirating smoke detector continually takes air from the monitored room using a connec-
ted pipe system with defined aspirating holes. The air is supplied to the detection chamber
and is analyzed for smoke particles using the detector installed there. The sensitivity of the
detector can be adjusted.
The position and size of the aspirating holes is calculated using the 'FXS2056 ASD Asyst
Tool V2' software. The calculation ensures that the air passes from the aspirating hole to the
detector in the time specified and with the required calculated sensitivity.
The 'FXS2056 ASD Asyst Tool V2' software replaces the 'FXS2055 ASD Asyst Tool' soft-
ware.
Examples of application
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Applications with a filter box
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Smart Infrastructure
Extended optical detection thanks to dual wavelengths (blue and infrared): The aspirat-
ing smoke detectors FDA241 and FDA221 use dual-wavelength technology to trigger an
alarm at the earliest possible moment. They are designed to protect small and medium-
sized business-critical environments for monitoring areas of up to 800 m
2
500 m
(FDA221). The detectors continually suck in air through a pipe system via their
aspirating holes. The air is fed into a uniquely designed detection chamber, in which tiny
smoke particles are detected by scattered light.
Lower mounting and service costs: The aspirating smoke detectors FDA241 and
FDA221 can be used on an FDnet/C-NET detector line. For this purpose, communication
transponder FDCC221S is required.
Configuration using the USB interface or the control panel via FDCC221S (optional): All
detector configurations, maintenance work, and alarm and fault management processes
can be carried out at a central location – the fire control panel. This ensures better con-
trol while also reducing the costs of the overall solution.
'Out-of-the-box' mounting and commissioning: Installation is simple thanks to combined
functions for normalizing smoke values and airflow, as well as appropriate presettings for
alarm and fault thresholds.
ASD filter box FDAZ292 available as an accessory: Dust and other dirt is filtered out of
the aspirated air and does not get into the aspirating smoke detector. The filters in the
ASD filter box are easy to replace.
Cavities such as false ceilings or false floors
Clean rooms
Rooms the height of which is greater than that permitted for point detectors
Rooms with electromagnetic fields which influence the function of point detectors
Large rooms up to 800 m²
Separate monitoring of control cabinets and electronics cabinets
Data centers
Telecommunication centers
Mounting lines
Cable tunnels
Conveyor belts
Rooms with polluted air, in which the pollution has impaired the performance of optical
point detectors
Mounting lines
Recycling facilities
Cement factories
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(FDA241) or
A6V10331032_k_en_--
2021-06-28
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