Installation & Operation Manual Merlin 2000S
2000S
IOM
Rev: 01 01-22
6
9.
CO2 MONITOR
This terminal can be used to connect a Merlin CO
2
monitor to shut off the system in the event of
a high concentration of CO
2
.
If no CO2 monitor is connected, the panel will ‘beep’
upon power up and the CO2 LED will
flash 3 times to indicate that this terminal has been disabled.
An external power supply is required.
Refer to your CO
2
monitor manual for further information.
10.
12V DC
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
There are various DIP-switches on the front circuit board that can be adjusted to configure your
system as per the following.
Auto Reset
There is a switch located on the circuit board labelled [AUTO RESET].
OFF
When power is restored after the power cut/ loss, the panel has to be
restarted manually. (Default)
ON
This will instruct the system to restart automatically when power is
restored after power cut/loss.
Building Management System Integration
There is a dip-switch located on the circuit board labelled [BMS SEL].
The panel can be integrated with a BMS to make or break a circuit when the gas is
either on or off, (valve open or valve closed). This will tell the BMS whether or not
power is being sent to the solenoid valve.
OFF
Signals the BMS when gas is on or gas is off. (Default)
ON
Signals the BMS on a fault, i.e. high gas levels detected, emergency
shut-off activated, etc.
