Eclipse Installation, Commissioning & Operating Manual Approved Document Ref: UI-ECL-01 Issue 8.0
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SETUP & PROGRAMMING
TWIN WIRE MODE
What is Twin Wire?
Twin Wire is Haes’ version of what is often referred to as sav wire. The technology enables sounders and
beacons to be connected to the same circuit as the detectors and call points. This can result in greatly
reduced installation time and cost.
How does it work?
In Twin Wire conguration the re zone circuits reverse polarity in alarm condition to power the sounders
and beacons. For this reason the sounders and beacons need to be wired in opposite polarity to the
detectors and call points, i.e. zone positive wire connects to detector base and call point positive terminals
but sounder and beacon negative terminals.
- + - + - + - + - + -
SNDR1 SNDR2 ZONE1 ZONE2 ZONE3 ZONE4
1 2 3
ON
1 2 3
ON
1 2 3
ON
1 2 3 4 5 6 7
Switch in upward
position = ON
To set Twin Wire mode, move switch 1 on the 3 way DIL switch located on the main PCB to the ‘ON’
position.
Note: Setting this switch will change ALL zones to
Twin Wire.
Zone +ve
Zone -ve
4K7 EOL
Resistor
Haes Twin Wire systems require 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, Cooper Fulleon, Besson, Klaxon etc.