PV700a / PV1000a pellet burners
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DK9401B1 www.pelltech.eu
Δp=-0,2/-8Pa
Measured under pressure value in bpoler. -0,2 is actual pressure and -8 is
set-point. Controller regulates flue gas fan speed to keep this pressure.
Depends also on PAR60 value.
Total=10 kg
Roughly the amount of pellets burnt. It is measured by counting internal
feeder rotations. Number is reset by firmware upgrade
Count=12,1 kg 180/254
Roughly the amount of pellets burnt, resettable by user.
U=25V68 I=0.0A
U - DC power voltage 25V68 means 25.68V. I – Feeder’s or grate’s motor
current.
Ver=2.08 19/12/12
Firmware version and date.
Menu
BURNER
enables to turn burner safely ON or OFF.
The main idea of
HOLD FLAME
function is to reduce permanent ON OFF cycles. This function is useful if
burner’s working time is much longer than WAITING time. For example 1 hour of working time and 10
minutes of waiting time. In „HOLD FLAME“status the fan rotates slowly (PAR10) and small quantities of
fuel are added to burner. Existence of flame is not checked. Such status may last max one hour,
after
what burner ends usual
BURNING
cycle and goes to WAITING. If boiler’s thermostat switches on before
an hour, burner goes to BURNING state. HOLD FLAME is activated when it is set to AUTO and two
WAITING times have been shorter than set value in PAR11. HOLD FLAME turns off if flame has been hold
more than PAR12 value.
HEAT UP
status enables slow heat up of fire bricks. It reduces termal stress and prolongs their lifetime.
SLOW DOWN
enables slow cooling down of fire bricks. It reduces termal stress and prolongs their
lifetime.
Menu
PELLETS
enables to select between 3 pre-set fuel quality options. Depending on fuel quality the
mass of fuel could differ in same amount. That’s why the calorific value of same amount may differ. By
default burner calculates that one rotation pushes 80 grams pellets (PAR21) to burning chamber. If
pellets density is smaller i.e. they are lighter, then with one rotation less pellets will be delivered into
burning chamber. Such mistake has to be compensated by choosing LIGHT from PELLETS menu. Now
burner calculates that one rotation equals with 75 grams of pellets (PAR31) and makes more rotations. In
general case there is no need to make change in PELLETS menu.
Menu
POWER
determines caloric productivity of burner in kilowatts. Power is calculated by reading the
rotations of the feeder auger, taking into account average caloric value of 1 kg of pellets. It is possible to
pre-set particular (200; 300; or else) power level value or AUTO - automatically selected value. In AUTO
status burner selects necessary power level depending on time what is needed to achieve pre-set
temperature. Burner changes its capacity what is determined by parameters MIN POWER (PAR13) and
MAX POWER (PAR14). If burner cannot achieve pre-set temperature in certain time (PAR15) it will raise
its power automatically by one level and continues rising power up to reaching maximum level (PAR14)
or boiler has achieved pre-set temperature.
If boiler achieves pre-set temperature faster than set in PAR16 burner will work one power level lower in
next cycle. Power will be reduced as long as burner has reached minimal power level (PAR13).
