Siemens Fda241 Asd Aspirating Smoke Detector Instructions

SIEMENS FDA241 ASD Aspirating Smoke Detector

Siemens aspirating smoke detector (ASD) for the addressed FDnet/C-NET de-tector line or for standalone operation

• Patented technology
• Early detection of a wider spectrum of particle sizes in the air
• Configuration using the USB interface or the control panel via FDCC221S (op-tional)
• ‘ASD Asyst-Tool’ software to assist with pipe configuration
• Unique dust-resistant detection chamber
• Intuitive front indicator for airflow and smoke value
• Access to service functions
• Different event protocols
• Offline/online configuration supported
• Cleaning function (FDA241)
• 4…20 mA output

Properties

• 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 m2 (FDA241) or 500 m2 (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.

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

• 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

Applications with a filter box

• Rooms with polluted air, in which the pollution has impaired the performance of optical point detectors
• Mounting lines
• Recycling facilities
• Cement factories
• Mining industry
• Subway stations
• Agricultural operations
• All other applications with visible dust load

Functions

Indication
The display contains clear, comprehensible bar graphs for smoke and airflow, as well as an alarm indicator, an error indicator, and a dust indicator (FDA241).
When the housing cover is open, the operator has access to the ‘Reset’, ‘Normalize Smoke’, and ‘Normalize Flow’ functions, as well as the mini USB connector.

Legend for the response indicators

Opening the detector

CAUTION
Damage to the connection cable
In order to prevent damage to the connection cable when positioning the housing cover, make sure that the connection cable has been routed correctly.

The service area for the detector can be accessed in two ways.

• Partial access:
  • Remove the two screws on the top of the detector.
  • Slide the housing cover up until you hear it snap into place.
• Full access:
  • Remove the two screws on the top of the detector.
  • Slide the housing cover up until you hear it snap into place.
  • Pull the housing cover out slightly at the sides and lift it up.
  • Remove the housing cover.

    

Service LED indicators and buttons

• Flow OK
  As soon as the selftest for normal operation has been completed successfully, the ‘Flow OK’ LED starts to flash.
• Smoke OK
  As soon as the selftest for normal operation has been completed successfully, the
  ‘Smoke OK’ LED starts to flash.
• Alarm
  In the event of a smoke alarm, the ‘Alarm’ LED starts to flash.
• Normalization of the airflow
  To determine the nominal airflow of the detector, perform this function during commissioning. The nominal value established during normalization of the airflow forms the setpoint value for monitoring the airflow during normal operation.
  To perform this function, use a thin object (such as a paper clip or a watchmaker’s screw-driver) to press the button in the opening.
  Once you have finished with this function, press the button in the opening again.
  The smoke detector uses standard values for monitoring during normalization.
• Normalization of the smoke density
  • To determine the nominal air quality in relation to the smoke density, perform this function during commissioning. \
  • The nominal value established during normalization forms the set-point value for monitoring the smoke density during normal operation.
  • To perform this function, use a thin object (such as a paper clip or a watchmaker’s screw-driver) to press the button in the opening.
  • Once you have finished with this function, press the button in the opening again.
  • The smoke detector uses standard values for monitoring during normalization.

    The detector provides information about the current normalization process via FDnet/C-NET (no distinction is made between smoke and airflow).

  • Reset button
    Use the reset button to reset all of the detector’s status indicators. These indicators can refer to fire alarms or airflow events. Resetting the fire alarm also resets the associated relay.
    If the detector is operated on the FDnet/C-NET, the alarms and the associated relays are not reset.
  • USB connection
    You can use a mini USB cable to connect the detector to a Windows PC. To set up the de-tector, use the configuration tool ‘FXS2051 ASD Configuration Tool’.
  • Test function LED
    Hold the ‘Buzzer silence’ button down for 5 seconds. The LEDs on the display are tested with 3 different brightness settings.

If the aspirating smoke detector is to be operated on the FDnet/C-NET, the communication interface FDCC221S (S24218-A201-A2) must be ordered separately.

Accessories

Type Overview

Product documentation

Related documents such as environmental declarations, CE declarations, etc., can be down- loaded at the following Internet address: http://siemens.com/bt/download

Notes

Disposal

The device is considered an electronic device for disposal in accordance with the European Guidelines and may not be disposed of as domestic garbage.

• Dispose of the device through channels provided for this purpose.
• Comply with all local and currently applicable laws and regulations.

Technical data

1 A-weighted sound power level in [dB] as per DIN EN ISO 3744-2009, measured with a pipe piece at the air inlet and at the air outlet

Dimensional drawings

Issued by
Siemens Switzerland Ltd
Smart Infrastructure
Global Headquarters
Theilerstrasse 1a
CH-6300 Zug
+41 58 724 2424
www.siemens.com/buildingtechnologies

© Siemens Switzerland Ltd, 2013
Technical specifications and availability subject to change without notice.

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References

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