Installation & Operation Manual Merlin 1000V
Rev: 02 05-22
7
Fan Switches
This terminal, switches when the key is turned on and off.
This can be connected to a fan switch (supplied separately) which can provide power to fans when the
control panel is switched on.
PD Switches / Current Monitors
This terminal is used to receive an input signal from external air pressure switches or current monitors.
This terminal is linked out as a factory setting. Wiring to external air pressure switches or current
monitors should made using a two-core cable. This is a volt free connection.
12 VDC
This is a power output for external auxiliary devices when there is power at the panel and can be used to
create a relay switch with the BMS relay output. Max output: 50mA
Switch Settings
–
Auto RST (Panel Auto Reset)
There are various dipswitches on the front circuit board that can be adjusted to configure your system as
per the following. There is a switch located on the circuit board labelled [AUTO RST].
OFF
When power is restored after the power cut/ loss, the panel must be restarted manually. (Default)
ON
This will instruct the system to restart automatically when power is restored after power cut/loss.
Switch Settings
–
Pressure (Gas Pressure Threshold Configuration)
There is a dipswitch located on the circuit board labelled [Pressure].
The gas supply will be turned off if pressure will drop below threshold value continuously for 10 secs.
OFF
Low pressure threshold is set to 12 mbar. (Default)
ON
Low pressure threshold is set to 5 mbar.
Switch Settings
–
EM SEL (Fan Switch Configuration)
This option is not available if a fan switch is not installed!
A fan switch (Merlin FS1 or FS2 - sold separately) provides the facility to turn on fan(s) when the 1000V
panel is switched on and removes power to fan(s) when the switched off.
OFF
Instructs the system to shut down fan(s) and gas upon activation of emergency shut off button(s). (Default)
ON
Instructs the system to leave the fans on and shut off the gas supply only upon activation of emergency shut
off button(s).
