Siemens FDL241-9 Mounting, Commissioning page 13

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4. Guide the cables from the detector line and external alarm indicator into the
detector base. You will also need a 24 V supply if you are using the detector
heating unit DLH1191A.
5. Mount the carrier (2) for the connection terminals by inserting two screws into
the detector base. The arrows in the carrier indicate which side should be at
the top.
6. If you are using the detector heating unit DLH1191A, insert the terminal block
supplied with the detector heating unit into the carrier (2).
a The detector base is installed.
Mounting / Installation
Installing the detector base
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