Detector Heating Unit Fdbh291; Installation Of The Detector Heating Unit - Siemens OH720 Technical Manual

4BMounting / Installation
5
36BDetector heating unit FDBH291

5.12 Detector heating unit FDBH291

5.12.1 Installation of the detector heating unit

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Building Technologies
Fire Safety
When the detector is exposed to icing or moisture condensation (e.g., in cooling
rooms, attics, loading ramps), detector heating unit FDBH291 is installed in the
detector base. The detector heating unit increases the detector temperature by
approximately 2 °C over the ambient temperature and thus avoids moisture
condensation on the detector.
Optimum function of the detector heating unit is only guaranteed with base
attachment wet BA721.
Figure 13: Mounting of the detector heating unit FDBH291
1 Micro terminals
2 Base attachment wet
3 Detector heating unit
4 Detector base
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2015-05-04