51
COMMISSIONING AND MAINTENANCE
CONTROLLED SHUTDOWN AND RESTART
Enabling/disabling sequence:
− programming permitted in NORMAL FUNCTIONING and
STANDBY mode;
− Press and hold the burner reset button for between 20
and 25 seconds.;
− The GREEN LED flashes 3 times;
− Release the button;
− The GREEN LED stays OFF;
− Press the burner reset button once to enable the func-
tion. (*);
− Press the burner reset button twice to select one shut-
down every hour. (*);
− Press the burner reset button 3 times to select one shut-
down every 24 hours. (*);
− The GREEN LED flashes ON-OFF at each press and release;
− After 10 seconds, the GREEN LED flashes for the pro-
grammed number of times (0.5s ON; 0.5s OFF).
Changes to the setting of the controlled shutdown and restart
function become active:
− after the next heat request from the thermostat (HT);
− after the next controlled shutdown and restart;
− after a flame failure during normal functioning;
− after power has been switched off and back on again.
DISPLAYING THE LAST LOCKOUT
The burner controller lets you display the last lockout stored in
memory. To do so, access the “Programming menu”.
This page can be accessed during NORMAL FUNCTIONING or STAND-
BY mode.
Sequence for displaying the last lockout in memory:
− Press and hold the burner reset button for between 25
and 30 seconds.;
− The GREEN LED flashes 4 times;
− Release the button;
− The type of lockout is displayed for 10 seconds.
Lockout type display time can be extended (for another 10 sec-
onds) by pressing the reset button again while the lockout type
is being displayed.
(*)
Always wait 1 second between every press and release
of the button to ensure correct interpretation of the
command.
SHUTDOWN TEST
If the reset button is pressed and held down for a time between
5 and 10 seconds during normal functioning, the burner shuts
down, the fuel oil valve closes, the flame goes out and then the
startup sequence starts. (Holding the button for longer moves
on to the next menu function).
If controlled shutdown and restart is enabled, the number of
startup sequence repetitions and the number of resets permit-
ted are both zeroed.
CYCLING AND THE SEQUENCE REPETITION LIMIT
The burner controller has a cycling function. This means that
the controller will repeat the complete startup sequence up to 3
times if the flame goes out during normal functioning.
If the flame goes out a fourth time, the burner controller locks
out. If the burner controller receives a new heat request while it
is repeating the ignition cycle, the ignition attempt count is reset
when the heat request thermostat trips.
NOTE
Note: If the burner functions continuously for 510 seconds, the
controller is allowed one additional startup attempt.
Disconnect and reconnect power to the burner to obtain a fur-
ther complete series of startup attempts (max. 3) for the next
heat request.
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