Max. duration combustion air fan run-on
Defines the maximum run-on time of the combustion air
blower fan. The blower fan is switched off after this time at
the latest, regardless of the residual oxygen values or
infeed before shutdown.
Speed monitor delay
The speed is only monitored (startup) after the delay has
elapsed.
Induced draught startup time
The induced draught requires a certain amount of time to
reach the setpoint. Error monitoring is not yet completed
during this time. The parameter specifies the duration of
the startup time. Only once this time has elapsed will you
exit the “Preparation” state and startup of the boiler can
continue.
ID fan compressed air cleaner interval
If the compressed air cleaner of the induced draught is
activated, cleaning starts during this interval.
ID fan compressed air cleaner duration
This is how long cleaning of the induced draught is active
for.
Under-pressure setpoint in combustion chamber
Specifies the combustion chamber underpressure setpoint,
after the induced draught fan is activated.
Min under-pressure in combustion chamber
If this under-pressure is not reached after the set warning
time, a warning is issued.
Time until warning for MIN under-pressure in combustion
chamber
Warning time for under-pressure warning.
Time until error for MIN under-pressure in combustion
chamber
If the specified under-pressure is not reached after this
time, a fault is issued.
Damping of underpressure measurement
This parameter can be used to attenuate a volatile signal
from the under-pressure measurement. The higher the
value, the duller the signal.
Tertiary air delay
Specifies the time delay for the tertiary air in seconds. 67%
of the required air flap position is reached within this
period. The output reaches the setpoint when this time has
elapsed approximately five times. The parameter has an
attenuating function on the output signal of the tertiary air,
thereby preventing the tertiary air flap from opening too
quickly.
Start tertiary air at secondary air control
Specifies the secondary air value from which the tertiary
air is regulated. You should ensure that the internal
secondary air value is used for the calculation, and not the
value reduced by FGR operation. This means that the
actual start point of the tertiary air may be different from
the secondary air value displayed on the controller, as the
internal value is higher.
Maximum boost of tertiary air at 100% CCT signal
Specifies the proportion of the combustion chamber
temperature signal, which is added to the tertiary air
control, as a percentage. The parameter "Tertiary air start"
is not considered and the tertiary air starts automatically
with the combustion chamber temperature signal.
Tertiary air opening at 0% control
Value of the tertiary air flap at 0% demand.
Tertiary air opening at 100% control
Activation of the tertiary air flap at 100% demand.
ID fan speed manual
Induced draught fan activation in percent when specified
manually.
Manual combustion air fan control
Activation of the combustion air fan in percent when
specified manually (manual switch).
Primary air flap manual
Activation of the primary air flap in percent when specified
manually (manual switch).
Secondary air flap 1 manual
Activation of the secondary air flap in percent when
specified manually (manual switch).
Tertiary air flap 1 manual
Activation of the tertiary air flap in percent when specified
manually (manual switch).
Air flap primary stop 0% opening
If the value is below this, the flap is detected as being
closed. Due to tolerances in the return signal, a closed flap
may return an opening of a few %.
Air flap primary stop 100% opening
If the value is above this, the flap is detected as being
open. Due to tolerances in the return signal, an open flap
may return an opening of just under 100%.
Menus and parameters
5
Boiler
Service manual SPS 4000 | B0960622_en
43
