Siemens FDUL221 Technical Manual page 33

Building Technologies
Fire Safety
Detector line connections
NOTICE
Connecting the FDUL221 line tester incorrectly may damage the hardware.
Connecting the fire detection installation and the FDUL221 line tester to the
detector line at the same time can result in irreparable damage to the line
interface or the FDUL221 line tester.
Only connect the line tester once the detector line has been separated from
the fire detection installation.
Connect the detector line which is separate from the fire control panel
according to the following figures.
Connect both ends of the line to the
tester.
Connection for a loop
Connection for a loop
Connect the ends of the feed line to line 'A'.
Connect the ends of the return line to line 'B'.
Connection for a stub or a single line device
Connect the ends of the line to line 'A'.
Structure and function
sockets on the FDUL221 line
Connection for a stub or a single line device
5
Setup
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2013-08-15