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Building Technologies
Fire safety and security products
FDT181 Heat Detector
Product Manual
Overview
The heat detector FDT181 is an intelligent detector. It is used for early fire detection
inside a building and particularly suitable for use in places where other types of
detectors are not suitable because they can be misled by the smoke, dust and gas
generated during work there.
Characteristics
– With built-in CPU, signals received are processed by intelligent algorithm
– Two operation modes: A2S/A2R
– Automatically address setting without encoder setting or DIP switch
– All-around visible alarm indicator
– Resistant to environment and interference factors such as humidity, electro-magnetic
interference, corrosive and vibration.
– Communication via FD18-BUS, polarity free connection
– “Sticker Method” easy for commissioning
Functions
– The detection behavior of the detectors is influenced by the parameter sets, so that it
can be specifically adjusted to the fire phenomena and environmental conditions to
be expected in the environment to be monitored
– Unique ID of each detector, controller can identify the detector type according to the
ID and assign address
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Building Technologies A6V10214490_a_en_--
Fire safety and security products 03.2010
Application
– Suitable for use in places where the ambient temperature can change rapidly or
smoke detector are not suitable
– Dust cap protects the detector from being contaminated by construction work
Indicator
The detector is provided with an internal alarm indicator to show its operating status.
(See table）
Detector Indicator
Normal Off
Locate/Test Flashing
Alarm Steady on
Installation
l Easy and time-saving mounting
Install the base and finish the wiring during the construction phase.
1. Point the retaining nest to the positioning pointer and insert it into the base.
2. Turn it clock wisely until it stops.
Uninstallation:
1. Turn it counterclockwisely until it stops.
2. Pull the detector out.
After all the construction is finished, the dust cap must be taken away!
Dimensions
In：mm（with base）
Detector
Retaining nest
Base
Positioning pointer
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Building Technologies A6V10214490_a_en_--
Fire safety and security products 03.2010
Connection diagram
Maintenance
l Performance test
Recommendation:
– Submit all detectors to an annual visual check. Detectors that are strongly soiled or
mechanically damaged must be replaced.
– Any detectors should be replaced after 7 to 10 years of service, independent from
the environmental conditions.
– Long term auxiliary detectors should be stored with plastic bag.
– Carry out heat test each year.
Teconical data
Operating voltage 12 … 32 VDC
Operating current (quiescent) 0.26 mA
Activation current 1.2 mA
Operating temperature –10 ... +50 °C
Storage temperature
–20 ... +75 °C
Humidity
≤96% (40±2 ℃)
Communication protocol
FD18-BUS
Color White, RAL 9010
Protection category GB4208-93 IP44
Details for ordering
Type Material No. Part No. Designation Weight
FDT181 S54320-F3-A1 100856212 Heat detector 0.064Kg
FDB181 S54320-F1-A1 100856213 Detector base 0.027Kg
A5Q00022001 100566011 FDT181 dust cap
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Beijing Siemens Cerberus Electronics Ltd.
No. 18 Xinxi Road Shangdi Information Industry Base,
Haidian District, Beijing 100085 China
Tel.: +10 6296 2255
Fax: +10 6298 7387
www.sbt.siemens.com
© Data and design subject to change without notice.
Doc No. A6V10214490_a_en_-- Version a Manual FD18
Edition 03.2010
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