1. Product Specifications
Supply Voltage:
Average Stand-by Current:
Max 40uA @ 24V T= 25°C
Alarm Current:
Max 50mA
Alarm current limited according to value of resistor in mounting base
(Terminal R+ must be used as shown in Figure 1)
External LED Current:
Max 8mA
Detector Height:
54mm with base
130g with base
Alarm temperature response: in accordance with EN54-5:Class A1 limits
95%RH non-condensing
Operating temperature:
-30 to +45°C (no icing)
AS400 Aurora
Rate of Rise Heat Detector
2. Base Mounting and Wiring Instructions
6. System operation
Terminals connections are shown in Fig. 1. The positive in and out wires
must be connected to the “R+” terminal whilst the negative wires must be
connected to the “–” marked terminals.
When using the ABS100 Standard Base it is not important which “–” marked
terminal is used for in and out negative wires, but the wires must use both
When using the ABSD100 Schottky Diode Base it is critical that the negative
in and out wires be split and connected to the terminals as shown in Figure 1
since otherwise line continuity may not be maintained if a detector is
removed (as required by BS5839-1).
If it is known that sufficient current limiting is provided by the panel the
positive wires may be connected to the terminal marked “+”. Panel current
limiting must not allow the alarm current to the detector to exceed 50mA. If
the alarm current is allowed to exceed the maximum specified then the
detector may be permanently damaged and will be excluded from warranty
cover. If any doubt exists then use the R+ terminal.
Each detector mounting base has two “–” marked terminals. These are
electrically identical, but they are connected to each other only when a
detector is correctly fitted onto the base. The schottky diode fitted in the
ABSD100 mounting base provides continuity to the next detectors or call
points if one detector is temporarily removed. This feature is used in
combination with an appropriate End of Line (EOL) component designated by
the panel manufacturer to indicate a fault condition if a detector is removed
from its base. To enable the function to operate correctly it is important that
incoming and outgoing negative wires are separated. A typical installation
scheme is shown in Fig. 2.
Warning – Before making connections to mounting bases and installing
detectors ensure that power has been removed from detector monitoring
Confirm system compatibility with your supplier or the panel manufacturer.
3. Detector Installation
a. Position the detector centrally on its mounting base and rotate
clockwise applying gentle pressure. The detector will drop into its keyed
location. Continue to rotate clockwise a few degrees until the detector has
firmly engaged in the mounting base.
b. After installing all detectors, apply power to the detector monitoring
c. Test the detectors as described in the section below, headed “Testing.”
Figure 1
ABSD100 Mounting Base
Wiring Connections
Anti-Tamper Feature:
The small plastic tab on the side of the base can be removed by inserting a
solid probe through the access hole on the side of the mounting base . A tool
must then be used to release the locking tab, which will allow the detector to
be removed from its base.
Remote LED
5. Maintenance
Before starting any maintenance work, isolate and disable the system, to avoid
accidental unwanted alarm conditions. Remove the detector from its
mounting base to allow inspection at ground level in good light. Inspect the
openings around the detector and use a small, soft bristle brush to dislodge
any obvious contaminants such as insects, spider webs, hairs, etc. Use a small
vacuum tube or clean, dry compressed air to pull or blow any remaining small
particles away from the temperature sensing area. Wipe the exterior housing
of the detector with a clean,damp, lint free cloth to remove any surface film
that can later attract air-borne contaminants. Replace the detector in its
mounting base and check correct operation as described under “Testing”
after all detectors have been inspected and power has been re-applied.
Warning & Limitations
Our detectors use high quality electronic components and plastic materials
that are highly resistant to environmental deterioration. However, after 10
years continuous operation it is advisable to replace detectors to reduce the
risk of reduced performance caused by external factors. Ensure that these
detectors are only used with compatible control panels. Detection systems
must be checked, serviced and maintained on a regular basis to confirm
correct operation.
Temperature detectors are set to respond at different thresholds dependent
upon their classification, thus application advice should be sought concerning
suitability and for special risks. Detectors cannot respond correctly if barriers
exist between them and the fire location and may be affected by special
environmental conditions. Refer to and follow National Codes of Practice and
other internationally recognised fire engineering standards. Appropriate Risk
Assessment should be carried out initially to determine correct design criteria
and updated periodically.
All detectors are supplied with the benefit of a limited 3 Year Warranty
relating to faulty materials or manufacturing defects effective from the
production date indicated on each product. This warranty is invalidated by
mechanical or electrical damage caused in the field by incorrect handling or
usage. Product must be returned via your authorised supplier for repair or
replacement together with full information on any problem identified.
Full details on our Warranty & Products Returns Policy can be obtained upon
Warning – During commissioning (assuming all building activities in the area
have been completed) ensure the protective dust cover has been removed
from each detector.
4. Testing
- IN
Detectors should be tested during system commissioning and when required
during scheduled periodical maintenance.
When the system has been reset after each test allow at least one minute
for power stabilisation before carrying out the next test.
Heat Testing
a. Use a heat test tool from an approved manufacturer in accordance with
their application instructions. This is important to prevent possible damage to
the detectors.
b. The red LED alarm indicator on the detector should illuminate (normally
within 30 seconds but this may vary according to test conditions and procedures) and an alarm condition should be activated at the control panel.
-ve Line
Magnet Testing
a. Position the test magnet level with the smoke entry ports approximately
100° anti-clockwise from the locking tab access hole on the side of the
mounting base.
b. The red LED alarm indicator on the detector should illuminate within 30
seconds and an alarm condition should be activated at the control panel.
+ve Line
Detectors which do not operate as described above require attention as
detailed under “Maintenance”, after which a new test should be carried out.
Figure 2
System Installation
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- IN
- +
- IN
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- IN
Fire Detection Products Ltd
Unit D1 Ford Airfield Ind Estate
BN18 0HY
SPNK 754431 014
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