Siemens FDA241 Technical Manual page 92

Commissioning
7
Normalization
92
Building Technologies
Fire Safety
Limits of the normalization of the airflow
(only for firmware versions ≥ 3.10)
The normalization process can only be carried out within a defined range for the
airflow values. Please refer to the following table for the limits of the range:
Device Lower limit for the airflow
FDA241
FDA221
If the airflow to be normalized is outside the permitted range, the aspirating smoke
detector indicates a general fault during normalization and normalization is
canceled:
The fault indicator

The 'Fault' relay output [➙ 69] opens.

The buzzer sounds continuously.

If the aspirating smoke detector is operated on a FDnet/C-NET detector line, a

message is transmitted to the control panel.
The LED on the bar graph also shows the deviation from the upper or lower limit.
NOTICE
No normalization of the aspirating smoke detector
False alarms due to false measurements
● Only use normalized detectors for fire detection.
See also
 Opening and closing the housing cover when the power
supply is switched on [➙ 46]
15 l/min
15 l/min
lights up.
Upper limit for the airflow
57 l/min
48 l/min
A6V10334410_h_en_--
2015-09-29