D-A412
larm System
Intelligent Rate of Rise
Fixed Temperature Heat Detector
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
Addressable Fire A
Note: The detector shall be horizontally installed. If
it has to be installed on an inclined plane, the
inclination angle shall not be over 45ºººº.
Fig. 3 shows the installation of the detector.
Conduit
Back Box
Base
Detector
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
1.0mm2 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.
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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.
Note: Specifications are subject to change without notice
Fig.3
2. The dust-proof cover should not be removed until
the project has been plunged into usage.
Otherwise it may not report alarm properly.
3. Fire simulation test should be done to the detector
at least every 6 months.
Accessories and Tools
Model Name Remarks
Specification
Operating Voltage Loop 24V (16V～28V)
Standby Current ≤0.8mA
Alarm Current ≤5.0mA
Indicators Red. Flashes in normal condition,
Remote indicator
output
Action
Temperature
Class A1R
Programming
Method
Code Range One address within 1～242.
Wiring Non-polarized 2-core for loop.
Ingress Protection
Rating
Ambient
Temperature
Relative Humidity ≤95%, non condensing
Material and Color
of Enclosure
Dimensions Diameter: 100mm
Mounting Hole
Distance
Weight About 120g
and illuminates in alarming
Directly connect to remote
indicator (built-in 5.1kΩ resistor in
series. Max. output current is
5.0mA). Quiet in normal
condition. Illuminates in alarming.
58℃
Electronically programming
Polarized 2-core for remote
indicator.
IP33
-10℃～+50℃
ABS, white (RAL 9016)
Height: 58mm (with base)
45mm～75mm
D-APP Hand Held
Programmer
DZ-03 Base Order separately
Order separately
Limited Warranty
SHIELD warrants that the product will be free of
charge for repairing or replacing from defects in design,
materials and workmanship during the warranty period.
This warranty does not cover any product that is found
to have been improperly installed or used in any way
not in accordance with the instructions supplied with
the product. Anybody, including the agents,
distributors or employees, is not in the position to
amend the contents of this warranty. Please contact
your local distributor for products not covered by this
warranty.
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DATA SHEET
Note: Specifications are subject to change without notice
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