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DATA SHEET
Note: Specifications are subject to change without notice
Features
Twin LED for 360° view.
Electronically addressed in field.
Built-in microprocessor stores 14 history data.
Rate of rise and fixed temperature alarm modes.
Self-diagnostic.
Remote indicator output available.
Complies with EN 54-5 standard.
Description
D-A412 Intelligent Rate of Rise and Fixed
Temperature Heat Detector is an addressable fire
alarm device cooperating with SHIELD intelligent fire
alarm control panels to build a fire detection system.
The detector shows fire alarm by the LED indicators. It
uses thermistor as its sensor and transmits the signal
to a microprocessor which, after voltage transfer,
processes the signal using intelligent arithmetic and
sends any fire alarm to the control panel. The LED
indicators will then be lit by the control panel.
Connection and Cabling
Fig.1 shows the detector bottom and Fig. 2 the base.
100mm
C
Fig. 1 Fig. 2
There are four terminals with numbers on the base.
1&3: Loop connection (polarity-insensitive)
2: Positive terminal of remote indicator
4: Negative terminal of remote indicator
Recommended Cabling
1.0mm
2
or above fire cable is recommended but
subject to local codes.
Installation
A fixed installation direction is ensured by the location
elements on the detector and the base. Fix the base
with two tapping screws, and then align mark C on the
detector with A on the base, rotate the detector to align
mark C with mark B (Refer to Fig.1 and 2 for the
position of the marks),detector will be fitted to base.
Note: The detector shall be horizontally installed. If
it has to be installed on an inclined plane, the
inclination angle shall not be over 45
ºººº
.
Fig. 3 shows the installation of the detector.
Detector
Conduit
Back Box
Base
Fig.3
Application
The detector is especially applicable to places where
fire occurs with sharp rise of temperature. Used
together with smoke detectors, it can detect fire with
more reliability to reduce losses.
The detector can be addressed in field by using
D-APP programmer. Please refer to
D-APP Hand Held
Programmer Installation and Operation Manual
for
details.
Maintenance
1. The detector should be installed just before
commission and kept well before installation,
taken corresponding measures for dust-proof,
damp-proof and corrosion-proof.
D-A412
Intelligent Rate of Rise
Fixed Temperature Heat Detector
Addressable Fire Alarm System
