FL 128 Multizone System 15.01.2021 33
The multi-8-zone detection cable should not be tie-wrapped to pipes (– use multi-4 Zone
detection cable instead)
As with all Floodline sensors water contacting the cable changes its electrical characteristics (resistance)
and when the change is sufficient the Floodline control panel, to which the sensor is connected will
generate the appropriate alarm.
The multi-8- zone detection cable has an outside diameter of 6mm. A tough all polymeric construction
makes it tough, durable, and resistant to abrasion, but it is also flexible enough to lie flat or be easily
shaped.
Although tough and durable the multi-8-zone detection cable is a sensing device and should be
treated as such
Fixing
The multi-8-zone detection cable is laid flat on the floor in the pre-determined pattern and special 8
Zone Junction Boxes are used to connect the detection cable “string” to the leader cable coming from
the control panel and at the start of each subsequent zone in turn. A further junction box is used at the
end of line. The detection cable is usually fixed with screwed “P” type clips or pin-plugged “Tower” type
clips. Both these techniques involve drilling and although self-adhesive clips or hot-melt adhesive clips
may be used they are only possible when the surface is clean, dry and non-friable. Clips are usually
spaced at 3m intervals and must hold the cable loosely to allow air to circulate around the cable. Once
the detection cable is laid identification/warning tags should be attached at 3m intervals to identify the
zone and warn of its function.
Connecting to Floodline Panel and Junction Boxes
The Multi-8-Zone Detection Cable can be directly connected to the zone input terminals within the
Floodline control panel however it is more practical to run 9 core (minimum) leader cable from the
panel position to the start of the area where the detection cable is needed. The specification of the
leader cable from the panel to the start of the detection cable is standard PVC/PVC 7/0.2 multi-core
alarm/comms type cable or similar. LSF of other light cables can be substituted if required.
A diagram of the connection details for the multi–8-zone detection cable is presented in
Appendix D
The special Junction Boxes are used to connect the leader cable from the control panel to the start of
the detection cable string: as zone change device and as end of line terminator. The function of each
junction box is determined by the positioning of the two jumper links within the unit. More detailed
reference to the positioning of the jumper links etc. appear in the diagram in Appendix D.
A standard colour coding is used for the junction boxes input and output terminals and the control
panel’s zone input terminals (as indicated on the diagrams in Appendix D). Terminations are always
connected in the same order for simplicity of installation. The following procedure must be followed
for splicing in the junction boxes:
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