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Single Zone AOV User Manual SETUP AND PROGRAMMING
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Approved Document Ref: UI-SZAOV-01 Issue 2.01
SETUP AND PROGRAMMING
Twin Wire Mode
Note: Dependency modes are not compatible with Twin Wire mode.
Twin Wire, often referred to as sav wire, enables sounders and beacons to be connected to the
same circuit as the detectors and call points.
In Twin Wire configuration, the detector circuit reverses polarity, in alarm condition, to power the
sounders and beacons. The sounders and beacons need to be wired in opposite polarity to the
detectors and call points (i.e., detector circuit positive wire connects to detector base and call
point positive terminals but sounder and beacon negative terminals).
Note: Twin Wire circuits requir
e special ‘sav-wire’ detector bases and polarised call points, but
standard sounders. Most modern, non-addressable, low current, polarised sounders, bells and
beacons are compatible, e.g., Cooper Fulleon, Besson, Klaxon, etc.
To set the DETECTOR output to Twin Wire mode, move switch 4 (TWIN MODE) on the 7-way
DIL switch located on the main PCB to the ‘ON’ position (down).