Installation & Operation Manual Merlin 1000V
Rev: 02 05-22
9
Operation
Initial Power Up
On connecting mains power, an LED on the front of the panel (OGS Logo) will illuminate red.
1.
Turn the key switch to on position.
2.
Testing LED will illuminate whilst the system checks for gas line.
3.
Gas-On LED should illuminate if gas proving is successful.
Turn the key switch to the off position to turn the panel off.
Emergency Shutoff Push Button
The emergency shut off button is located on the front of the panel. There is also a facility for remote shut
off buttons to be wired in series on the circuit board. The emergency shut off button(s) will cut off the
gas supply when activated. To reinstate the system, the emergency shut off button(s) will need to be
reset and the panel restarted.
LED Indicators
•
Gas On
When the key switch is turned on, the system will check the installation for gas leaks.
If gas proving is successful, the LED will illuminate.
ON = Gas On / OFF = Gas Off
•
Testing
This LED will illuminate GREEN for approximately 30 seconds when the panel is checking the integrity of
the gas installation upon start up.
ON = proving the gas line, do NOT operate any appliances.
•
Test Fail
Under normal working conditions this LED is off. When the panel detects a gas leak on start-up, the LED
will illuminate AMBER. Gas valve will remain closed.
OFF = OK / ON = gas proving failed.
•
Pressure Low
Under normal working conditions the LED is off. The LED will illuminate AMBER when pressure of the
gas supply drops below 1.2kPa for 10 secs. The gas valve will close.
OFF = OK / ON = gas supply pressure low.
•
Timeout
Under normal working conditions this LED is off. This LED will illuminate AMBER when auto-shut down
has occurred.
OFF = OK / ON = Auto-shut down activated
•
EM Stop
If an emergency shut off button (either remote or on the panel) is pressed, the LED will illuminate
AMBER and the gas will be turned off. The emergency shutoff button must be reset before restarting the
system.
OFF = OK / ON = Emergency Shut-Off button activated.
•
CO2/ Gas Detected
Under normal working conditions this LED is off. If the external Merlin detector connected detects gas
this will show RED, and the gas valve will turn off.
OFF = OK / ON = Gas detected.
•
Fan Fault
Under normal working conditions this LED is off. If a fan fault is identified for longer than 10 seconds the
LED will show RED, and the Gas valve will turn off. Fan fault will only identify when the gas is on only.
OFF = OK / ON = Gas supply has been shut off due to a ventilation fault.
