INSTALLATION INSTRUCTIONS
Hydrosense Conventional Water Detection System
Document Part No. 3500012 REV03
Page | 11 of 27
All repeaters are now configured and the control panel will report a fault if any repeaters that
have been accepted become faulty or go off line.
Ancillary Boards
Connect the RS485 bus and power to each Ancillary board. Up to 7 Ancillary boards may be
connected and each board has terminals for the incoming cables and outgoing cables. All
except the last RS485 device must have the jumper links J2 removed.
Set the ancillary board address using the DIP switch (SW2); ensure no two ancillary boards
share the same address.
Apply power to main panel and all ancillary boards then turn on the enable key-switch and
set the write enable slide switch to on, briefly press the PROCESSOR RESET button on the
main panel, wait for a few seconds and the main panel will show the addresses of the
ancillary boards that were found on the display for instance o1 indicates that an ancillary
board at address 1 has been found.
Press the ENTER button to accept each ancillary board that has been found.
The control panel will report a fault if any ancillary boards that have been accepted become
faulty or go off line.
Sounder circuit wiring
All sounders must be of the polarised type. If non-polarised sounders are used the control
panel will permanently show a fault condition.
Sounder circuits are monitored for open and short circuit faults by placing a 10K end of line
monitoring resistor across the last device on the circuit.
Sounder circuits must be wired as a single, radial circuit with no spurs or T junctions to
enable the monitoring circuit to work correctly.
A maximum of 1.6 Amps is available for powering sounders with a maximum load of 0.41
Amps on any one circuit.
Figure 5
