PV700a / PV1000a pellet burners
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occurred errors e.g. If pellets have run out and NO PELLETS is displayed the burner stops safely normal
BURNING cycle.
Table 18 End burn parameters
PAR No
Parameter name
Default
value
Unit
Comment
PAR26
END BURN FEED
50..80
rot
Feeder auger rotations to clean up feeder’s pipe.
-
Minimum feed
20
rot
If less rotation are made and boiler thermostat is
switched on then burner goes back to BURNING state.
The
END BLOW
cycle is needed to burn finally all unburned pellet coals in the burning chamber. Burner
will wait for flame disappearing in burning chamber. In PAR27 is fixed the end blow time, i.e. the time
how long the fans continue to blow after flame’s disappearing.
Table 19 END BLOW parameters
PAR No
Parameter name
Default
value
Unit
Comment
PAR9
FAN@END BURN
20
rps Fan speed at END BURN.
PAR39
FAN 2 MIN
7
rps Minimum speed of secondary fan. Used at IGNITION,
PREBURN, HEAT UP, HOLD FLAME and END BLOW
statuses.
PAR27
END BLOW TIME
2
min Time to blow air after flame is disappeared
-
Max. END BLOW
time
15
min Maximum time when flame must disappear at END
BLOW.
4.5 Output power levels
Burner has 6 pre-set output power levels. For every level, the program calculates correct fuel amount
what depends on fuel’s calorific value and burner’s internal feeder productivity. The feeder productivity
for normal, light and heavy pellets can be changed from main menu. For normal pellets it is 160 grams
per rotation (PAR21). Calculated amount of fuel is divided into periodic feeding cycles. In every normal
cycle internal feeder makes half rotation. If the calculated time of cycle comes too short then the cycle
length will doubled and fuel will loaded with full rotation of feeder. For every power level there is
different pre-set fan rotation speed (PAR1..PAR6).
Burner chooses the output level between pre-set min and max powers. When burning time has been
more than 15 minutes (PAR15), next time burner takes one power level up, when burning time has been
less than 30 minutes (PAR16), next time burner takes one power level down.
4.6 Main menu and settings
To enter to set up menu press OK. To go back to main menu, press
<
button.
