PV700a / PV1000a pellet burners
p
38/ 59
DK9401B1 www.pelltech.eu
In Automatic Power mode (POWER set to AUTO in main menu), the operation power is selected
automatically depending of burning cycle length.
Figure 34 Burning procedure when power selection = AUTO
In
SLOW DOWN
mode, the burner power is reduced step-by-step to 1 level after boiler thermostat is
switched OFF. This mode can be used only in systems with high and stable power demand. Using “Slow
down” mode in systems with low thermal inertia or unstable power demand, there will be risk of system
overheating. The SLOW DOWN mode is recommended to use together with HOLD FLAME.
P
o
w
e
r
lev
e
l
Burning time
min
Par 17
3
2
1
4
5
6
7
2 2 2
Selected power
Po
w
er lev
el
Time(min)
Par 17
Par 15
Max power (par 14)
Par 15
3
2
1
4
5
6
7
2 2 2
30
30
Operation power
8
9
“End burn“
„End Blow“
„Waiting“
„
Burning“
“Testing“
„Loading“
„Igniting“
„Pre-burn“
Thermostat ON
OFF
„
Burning
“
New operation power
Par 15
Figure 33 BURNING at fixed power
Power level can be selected in main
menu. Power level selection for
burning time can be automatic or
fixed on some main level. When
power level is fixed, the power is
slowly raised to selected level and will
be there until boiler thermostat
switches off.
