BURNiT Pell 25 - Calibration of Auger Fuel Feed Rate; Burner Output Adjustment

TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
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10.1.Calibraonofaugerfuelfeedrate.
The auger fuel feed rate changes
depending on the density and size of the
fuel used. Therefore it is necessary to
calibrate the main auger every me you
change the type of the fuel used.

CAUTION!Itisrecommendedto
use the same fuel throughout
theheatingseason.
Once you have installed the pellet auger
according to the instrucons in the
manual, ll the hopper with fuel (pellets).
Connect the power supply of the pellet
auger directly to the power mains. The
auger is now in operaon. Wait about
15-20 minutes for the pellet auger to
ll with pellets. The auger is lled with
pellets when pellets begin to fall from the
T-branch of the auger at the point where
the exible pipe is aached.
Filling of the pellet auger is necessary
when the fuel in the hopper has been
depleted or when fuel has been changed.
Once you have ensured that the pellet
auger has been lled, take an empty
plasc bag and xed it securely on the
pellet auger, at the place of the exible
pipe. Reconnect the auger to the power
socket and measure the amount of
pellets collected in the bag over a period
of 15 minutes using scales/weighing
scale. (In our example, the amount
of pellets collected in the bag over a
15-minute period is 4320 grams (900
sec). We then divide 4320 by 900 and get
4,8grams of pellets per 1 second. Repeat
the measurement in order to obtain
conclusive results .
10.2.Burneroutputadjustment.
In the burner output sengs menu you
can adjust the running me of the main
auger (Feed); main running interval
(Cycle) and fan output (Fan).
Example for Pell 25 model: we select
mode Cycle = 20sec. The heang value of
your fuel is 4,8kWh/kg. (manufacturers
indicate the heang value of the fuel
on the packing – take it from there).
We then employ the following formula
to calculate the number of seconds for
seng the operaon of the main auger
for these 20 sec.:
t
FEED
=25000/(4,8x180x4,8)
hence t
FEED
=6sec.,
where 25,000 is the desired output of the
burner in Was (W),
4,8 is the heang value of the fuel in
kWh/kg,
180 is the number of burning cycles per
1 hour,
4,8 is the amount of pellets in grams fed
by the auger per 1 second. This way the
output mode can be changed and instead
the number 25,000–25kW, we input the
desired kilowas (40 kW=40000 W, 70
kW=70000Wetc.).
Take also note of the fuel heang value
which would change the value for the
feed and the burner output.
Using the above procedure, you can set
any of the three output modes of the
burner.
Mode : Maximumoutput
mode – It is indicated by three ames.
Pelletaugerrunningme(Feed) – 6sec.
(25kW)
Maincombusoncycle(Cycle) – 20sec.
(recommended)