SWEBO PB/20, Installation And Maintenance Instructions Manual

Page: 23 / 36

SWEBO Bioenergy
Manual pellet burner PB20
Rev no. Date Page
PBM1:12 2018-01-22 23 (36)
3.3.1 Desired value temp.
The desired boiler temperature that automatic power
regulation is to maintain can be adjusted under
”Desired value temp”
NOTE! ”Stop temp” > ”Desired value temp” > ”Start
temp”.
Setting range, 20-90 degrees.
Default setting = 80 degrees.
3.3.2 Power around temp
The temperature range that is permitted around the
desired value for each power range can be adjusted
under “Power surrounding temp”.
Setting range, 2-10 degrees.
Default setting = 3 degrees.
3.3.3 Power surrounding time
The maximum time for a power stage within the same
power range can be adjusted under “Power
surrounding time”.
Setting range, 1-300 seconds.
Default setting = 30 seconds.
3.4 Power stages
Select here in which power stage settings are to be
made. Users can only make limited changes from the
standard settings.
Options, 1-4.
3.4.x.1 Feed time
The fuel feed time can be adjusted under ”Feed time”.
This is done separately for each power stage.
Setting range, 0.5-20 seconds.
Default setting (power stage 1) = 2 seconds.
Default setting (power stage 2) = 2 seconds.
Default setting (power stage 3) = 3 seconds.
Default setting (power stage 4) = 5.5 seconds.
3.4.x.2 Pause time
The pause time for the fuel supply can be adjusted
under ”Pause time”. This is done separately for each
power stage.
Setting range, 1-60 seconds.
Default setting (power stage 1) = 21 seconds.
Default setting (power stage 2) = 18 seconds.
Default setting (power stage 3) = 16 seconds.
Default setting (power stage 4) = 14 seconds.
3.4.x.3 Fan speed
The fan speed time can be adjusted under ”Fan speed”.
This is done separately for each power stage.
Setting range, Off or 25-100 %.
Default setting (power stage 1) = 38 %.
Default setting (power stage 2) = 47 %.
Default setting (power stage 3) = 56 %.
Default setting (power stage 4) = 65 %.
3.4.x.4 Low power mode
The low power stage at which lighting is to shift when
the temperature reaches the stop temperature set in
parameter 3.1 can be adjusted under ”Low power
mode”. This is done separately for each power stage.
Setting options, Off or 1-3.
Default setting power mode 1 & 2 = OFF.
Default setting power mode 3 & 4 = 2.
3.4.x.5 Low power temp
The number of degrees below the stop temperature
that shift to lighting according to the low power mode
occurs can be adjusted under ”Low power temp”.
Setting range, 1-10 degrees.
Default setting = 5 degrees.
3.5 Max. Lighting time
How long continuous lighting can occur without
stopping can be adjusted under ”
Max. Lighting time”
.
Even if the temperature has not reached the stop
temperature, the automatic control device, after the
selected time has been exceeded, will start damping
down with corresponding blow cleaning.
Setting range, Off or 1-24 hours.
Default setting = 6 hours.
(6.)4 Damping down
When the boiler temperature has reached the stop
temperature (3.1), damping down starts. During
damping down, fuel feed stops and when the flame
detector detects that the fire has gone out the fan
speed increases for blow cleaning the burner and
combustion chamber.
4.1 Blow cleaning
The applicable running time for the fan during blow
cleaning of the burner and combustion chamber can be
adjusted under ”
Blow cleaning
”.
Setting range, 1-20 minutes.
Default setting = 6 minutes.
4.2 Fan speed
The fan speed time during blow cleaning can be
adjusted under ”
Fan speed
”.
Setting range, Off or 25-100 %.
Default setting = 100 %.
(6.)5 Failsafe operation
If malfunctions occur during normal lighting in the event
of an alarm via the flame detector, the automatic control
device will shift to lighting according to failsafe
operation. Before firing and transfer to
failsafe
operation, damping down occurs and only
one firing
attempt is permitted during failsafe operation.