The FDA221 series of detectors are a very early warning dual wavelength (blue and infrared) smoke detectors designed to protect small business-critical environments up to 500 m². The detector works by continually drawing air into sampling holes in a pipe network. The air is passed into a uniquely designed detection chamber where light scattering technology detects the presence of very small amounts of smoke. The FDA221 detectors can communicate directly on the FDnet/C-NET loops (with an optional FDCC221S communication interface), so there is no need for separate relay or network connections.
Technical Specifications
Operating voltage
DC 19…30 V
Operating current
150 mA (nominal); 250 mA (in alarm)
Dimensions (W x H x D)
155 x 280 x 114 mm
Sound level
High 33 dB, medium 30 dB, low 26 dB
Operating temperature
-20…60 °C
Relative humidity
5...95% rel. (no condensation)
Pipe length
30 m (single pipe length) 50m (total pipe length)
Air inlet pipe
Metric: 21 mm ID...25 mm OD
Relay outputs
3x 2 A / 30 V
Alarm threshold
0.14...2.0 % obs/m / info alarm, pre-alarm, fire 1 (5 sets) 6.0...20 % obs/m / fire 2 (5 sets)
Area coverage
Up to 500 m²
Display
3 Alarm state indicators Fault indicators Smoke and airflow level Bargraphs
Communication protocol
FDnet/C-NET
Protection category
IP30
Terminals
0.2...2.5 mm² (30 - 12 AWG)