Mini Merlin Installation, Operation & Maintenance
Rev: 01 02-22
10
Operation
Initial Power Up
When power is removed manually or due to an unpredicted power failure the CO and NG BMS circuit will change state
switching off boilers/appliances via a limit switch if configured to do so!
When electrical power is supplied, press, and hold the touch sensor on the front cover for ~3 seconds.
The detector enters a stabilisation phase for approximately one minute
–
during this period the device is not
operational.
If the detector
has been configured to ‘
Auto-R
eset’ –
your device will power up automatically when
electrical power is supplied. To turn your device off, remove/isolate electrical power supply.
Digital Indications
Alarm Set Points
When the detector reaches alarm levels the maximum concentration detected will be saved and the screen value will switch
between the maximum (MAX) and the real time current value!
When the device has reached an alarm state, the concentration indicator will remain red even if gas levels are safe until the
device is reset by pressing the touch sensor once!
An audible buzzer will sound if the buzzer switch on the circuit board is on!
Target Gas
Pre-Alarm
Buzzer
Alarm
Buzzer
Carbon Monoxide (CO)
▲
25ppm
Beep every 15s
▲ 50
ppm
Continuous Sound
Methane/Natural Gas (NG)
▲
8% LEL
▲
10% LEL
▲
Rising Alarm
PPM
(Parts Per Million)
LEL%
(Lower Explosive Limit)
Manual Reset
To reset after an alarm - press the touch sensor once.
Note:
If the device enters an alarm state at any time, the gas level indicator will remain red to alert the user
that a high/dangerous level of gas has been detected, until the device is reset.
Remote Shut Off
A message will display if the device is integrated with remote shut off devices such as smoke or fire
alarms etc. When activated, the device will isolate the gas supply if configured to do so.
The detector would need to be reset once the remote issues has been rectified.
