MINI MERLIN LPGCO
USER GUIDE
Rev: 03 05-19
9
7.
Mini Merlin Circuit Board
1.
POWER/LINE IN –Mains electrical power input. 110-120v AC
2.
VALVE OUT – Gas solenoid valve power output. 110-120v AC
3.
AUTO RESET & BUZZER SWITCH – See table below.
4.
CO BMS – This will switch when CO reaches the alarm level.
5.
NG/ LPG BMS – This will switch when LPG reaches the alarm level.
6.
REMOTE SHUT OFF – Closed out as a factory setting and during normal operation, this
input shuts off the gas valve relay in the event of external detectors being triggered.
Switch
Options
OFF
ON
Auto Reset
Switch
DEFAULT
When the power is restored after a
power loss, the unit must be restarted
manually
This will instruct the unit to restart
automatically when power is restored.
Buzzer
Switch
The audible alarm will not sound at any
level but the digital display gas level
indicators will remain active.
DEFAULT
The alarm will sound every 15 seconds
during pre-alarm gas levels and
continuously when gas levels are high.
