11
Pic. 6 . Fan and feeder operation periods.
Parameters related to Operation mode are:
Feeder operating time
and
blowing power
located in:
Menu
→
Boiler settings
→
Power
modulation
and
Operation time period
located in
Menu
→
Service settings
→
Boiler settings.
There are two regulation modes responsible
for stabilization of boiler preset temperature:
Menu
→
Boiler settings
→
Regulation
mode
Standard mode operation
If the boiler’s temperature reach preset one
then
the
controller
switches
of
to
SUPERVISION mode.
Controller is equipped with boiler’s power
modulation mechanism – which allows for
gradual power reduction when approaching
the preset temperature.
There are three power levels:
Maximal power 100%
Medium power 50%
Minimum power 30%
Current power level is displayed on the
screen as 3-segmented indications rate the
left side of boiler’s icon.
Pic. 7. Power level indicator in main window.
Each level can be allocated with separate fuel
feeding times and blowing power which
influence on actual boiler’s power level.
Power levels parameters are available in the
menu:
Menu
→
Boiler settings
→
Power
modulation
.
The controller regulates burner’s power with
which it operates depending on preset
temperature
and
defined
hysteresis
Hysteresis H2
and
Hysteresis H1
Pic. 8
Hysteresis
H1 and H2
It is possible to configure volumes H1 and H2
in such a way that modulation is done
without intermediate position. That means
switching from 100% to 30% with omission
of 50% power (right side of the picture).
Pic. 8 Hysteresis H1 and H2 of power modulation
Operation in Fuzzy Logic mode
In Fuzzy Logic mode the controller
automatically regulates burner power to
allow boiler operation in such a way to
maintain its temperature on preset level. The
controller uses power levels defined in
Standard mode. In this mode the parameters
Hysteresis H2
and
Hysteresis H1
do not have
to be set.
The Fuzzy Logic mode unlike the Standard
mode is not faulty in respect of failing to
reach the preset boiler temperature due to
incorrect adjustment of
Hysteresis H2
and
Hysteresis H1.
It also allows for quicker
reach the preset temperature.
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