49
COMMISSIONING AND MAINTENANCE
MAIN BURNER FUNCTIONS
Heating function always on
The burner is equipped with heating function always on. In case
of a heat request, it starts immediately with the start-up se-
quence.
Shutdown test
If the reset button is pressed during operations for more than
5 seconds and less than 10 seconds, (to avoid going to the next
menu) the burner switches off, the fuel valve closes, the flame
goes out and the start-up sequence restarts.
If the switch off test is enabled, the number of repetitions of the
start-up sequence (see “Recycle and limit of repetitions”) and
the number of possible resets, are reset.
CONTROLLED SHUTDOWN AND RESTART
After 24 hours of continuous functioning, the controller initiates
a controlled shutdown followed by a re-start to ensure that the
flame detector is not faulty.
You can reduce reduced shutdown and restart time to 1 hour
(see "Programming Mode").
POST-PURGING
The post-purging function keeps the fan running for a set time
after the burner shuts down provided there is no new heat re-
quest.
When the contacts of the heat request thermostat open, the
burner controller shuts down the flame and shuts off the oil
supply.
Post-purging does not occur:
− after a lockout;
− if a heat request is cancelled during pre-purging.
Post-purging occurs:
− if a heat request is cancelled during safety time;
− if a heat request is cancelled during normal functioning.
NOTE
If extraneous light or a false flame signal is detected during
post-purging, the burner locks out after 25 seconds.
If a new heat request is detected during post-purging,
post-purging time is reset, the fan motor stops and a new
burner ignition cycle is initiated.
PROGRAMMING MENU
General
The programming menu can be accessed via the integrated reset
button during OPERATION and in STAND-BY.
If in the menu page the reset button is not pressed within 10
seconds, the page will be automatically quitted and a green led
will start flashing for the time set.
If the number of presses on the reset button exceeds the max-
imum allowable, the value that stays in memory will be the
maximum one.
If the reset button is pressed for more than 60 seconds, a button
error will be displayed and the control box will restart.
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