System accessories Page 613 Network/server enclosures TS IT Page 100 Micro Data Center Page 566
The EFD III early fire detection system includes the smoke extraction system in a 482.6 mm (19") subrack with just 1 U. An integral fan continuously extracts air from the area being protected via a system of pipes. The air drawn in passes two fire detec- tors. If smoke is detected, the highly sensitive detector will emit a pre-alarm, while the second detector will activate the main alarm. The fire detectors are per- manently monitored for correct functioning by the evaluation and control electronics on the control card.
Benefits: – Early fire detection – 482.6 mm (19") rack mount with just 1 U
– Tested by VdS Schadenver- hütung GmbH
– CAN bus interface to the CMC III monitoring system
Note: – This system is designed solely for use in closed, non-accessi- ble enclosure systems.
EFD III Width mm
Height mm Depth mm Weight kg Model No.
Operating temperature range
Storage temperature range without batteries Storage temperature range of batteries Ambient humidity (non-condensing) % Rated operating voltage V, ~, Hz Emergency power supply Airflow monitoring
Interfaces
Packs of
482.6 44
490 15.0
1 pc(s). 7338.221
+10°C...+40°C -20°C...+65°C -15°C...+40°C 96
100 - 240, 1~, 50/60 approx. 4 h
approx. ±10% of total airflow
4x/3x relay outputs for alarms and faults (terminals/RJ12 jacks) 1x/1x input for door contact switch (terminal/RJ12 jack) 2 x CAN connections for master-slave networking
3 x connection (external alarm/manual call point/tank and fill level) 1 x voltage output for DET-AC slave III (24 V DC max. 500 mA) 1 x USB
Sensors Display
Also required CMC III CAN bus connection cable Pipe kit
Slide rails, depth-variable
1 pc(s). 1 pc(s). 2 pc(s).
2 x CAN bus interfaces to CMC III (max. 16 on PU/4 on PU Compact) Optical smoke detector (sensitivity: approx. 3.5%/m light obscuration)
