Merlin 1000V
Product Data Sheet
S&S Northern Ltd
6
3.5
Fire alarm integration
The Merlin 1000V can be integrated with a fire alarm to close the gas supply
automatically in the event of a fire.
The volt free fire alarm signal can be wired in series with any remote emergency shut
off buttons. If there is no remote emergency stop buttons installed wire this directly to
the terminal marked ‘EM REMOTE’
3.6
Fan switch integration
There is the facility to connect a Fan Switch (FS1 or FS2 sold separately).
The Fan Switch provides the facility to turn on the fan(s) when the key switch on the
Merlin 1000V is in the on position and turn the power off to the fan(s) when the
key switch on the Merlin 1000V is in the off position. There is a dip-switch located
inside the facia of the Merlin 1000V labelled EM Selection.
This is factory set in the ‘off’ position which instructs the system to shut down the
fan(s) and gas supply on activation of the Emergency shut off button(s). On
installation, this can be switched to the ‘on’ position if required. This will instruct the
system to leave the fans on and only shut off the gas supply on activation of the
Emergency shut off button(s). Note: This option is not available if Fan Switch is not
installed.
3.7
Gas fill and prove time
Gas fill and prove times are adjustable. There are two dip-switches located on the
inside facia of the Merlin 1000V
labelled “Fill Time” and “Prove Time”. They are
factory set in the ‘off’ position. Fill and prove time can be changed by turning the
relevant dip switch to on position.
Fill time: Off
– 5 secs, On – 10 secs
Prove time: Off
– 30 secs, On – 50 secs
Once the settings has been changed, please remove power from the fuse spur for 10
seconds.
3.8
Auto reset
The Merlin 1000V has a built-in auto reset feature. There is a dip-switch located on
the inside facia of the Merlin 1000V
labelled “Auto Reset”. This is factory set in the
‘off’ position. When the power is restored after the power cut, the panel has to be
restarted manually.
On installation, this can be switched to the ‘on’ position if required.
This will instruct the system to restart automatically when power is restored after the
power cut.
