6 Boiler in function
6.1 First operation
When putting the boiler and burner in operation for the rst time (this job can be performed by authorized
and qualied person only) it is necessary to check if the factory settings are
6.2 Burner in operation
To turn the burner on perform the following steps:
1. Turn the main switch for power supply.
2. By pressing the manual feed button, it is necessary to ll the feeding auger with pellets and the
burner itself. Before that make sure that there are enough pellets in the pellet storage and if not
please rell it.
3. The burner is tuned on/o by pressing the corresponding button. When all the parameters are set
at the time of the initial burner operation, this is all the end-user has to do.
Burner operation can be divided into several zones:
1.
Start-up / Ignition.
Burner is put into operation by pressing the corresponding button. Ignition
process is controlled automatically by the preprogrammed parameters. When the burner is turned
on, the electrical heater starts to heat up pellets (for 4 minutes by default setting) and after that
the fan starts to blow. Ignition process lasts until the ue gas temperature reaches 70 C. The burner
goes into another phase ("stabilization"). If for some reason, after 15 minutes the 70◦C temperature
is not reached, the burner will be turned o and the message on the display will tell that the burner
ignition did not succeed.
2.
Flue gas stabilization.
After the ignition process is successfully completed, it is necessary to allow
burner some time to stabilize the ame. This period is according to default setting one minute long.
After that, the burner is ready to start the feeding process according to adjusted power range and
start increasing the water temperature toward the desired one.
3.
(Main) working cycle.
The burner remains in this state until one of the following conditions is
completed:
•
water temperature inside the boiler has reached the set value
•
ue gas temperature has reached 250◦C;
if one of the conditions is fullled the burner will enter the "modulation" cycle.
4.
Modulation.
Modulation means the burner operates with minimum power necessary only to retain
not to increase the (reached) water temperature. According to factory presets modulation range
is set between 2◦C below the desired temperature (the lower threshold) and 5◦C above the desired
temperature (the upper threshold). For instance, if the desired temperature is set at 50◦C, between
48◦C and 55◦C burner will feed minimum amount of pellets. If the temperature exceeds the upper
threshold burner will turn o. If it goes below the lower threshold, burner will be in main working
cycle (again).
5.
Turning o.
When the burner is turned o by pressing the button, no pellets are fed to the
burner and the fan starts to blow out the remaining pellets through the ame tube until the ue
gas temperature is below 60◦C.
Burner display should indicate the current working zone of the burner.
For the cleaning purpose, fan blows out the particles in the ame tube every 60 minutes (by default)
and this operation takes 30 seconds. If there is an electricity black-out, and there is no alternative power
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