17
2.6.6 Burnout
Combustion is stopped. Pellet transport into the burner pot is stopped, the
vacuum fan continues to run until all the remaining pellets have been burned
and the burner pot has cooled down – Fig. 34.
2.6.7 Burner OFF
There is a heating requirement from the control system, but the boiler tem-
perature (actual value) is higher than the boiler temperature setpoint. This
means combustion is stopped and the burner is switched off – Fig. 35.
Fig. 34
Fig. 35
Boiler temperature
Burnout
Info
Menu
42
°C
Boiler temperature
Burner OFF
Info
Menu
42
°C
2.6
Operating phases
2.6.1 Standby
During this operating phase, the control system does not transmit requests
for heat. The burner is switched off and the boiler temperature setpoint is 0 °C
– Fig. 29.
After an hour in standby mode, the display is shut down fully and only the
green LED is lit up. The display is switched back on by pressing a button or
when there is a heating requirement.
2.6.2 Purging
The vacuum fan runs, the combustion chamber of the FireWIN is flushed
through with fresh air. This phase can last several minutes before the burner
fires – Fig. 30.
2.6.5 Modulation mode
The burner is in modulation mode. The output can be infinitely varied between
30 % and 100 % – Fig. 33.
Note:
In the modulation mode briefly no flame can be visible during the auto-
matic burner ash removal!
Operation
2.6.3 Ignition phase
The vacuum fan runs, pellets are transported into the burner pot and are igni-
ted. When flame formation is detected, the system switches over to flame sta-
bilisation – Fig. 31.
2.6.4 Flame stabilisation
Following the ignition procedure, uniform combustion is established and then
the system switches over to modulation mode – Fig. 32.
Fig. 29
Fig. 30
Fig. 31
Fig. 32
Fig. 33
Boiler temperature
Standby
Info
Menu
42
°C
Boiler temperature
Purging
Info
Menu
42
°C
Boiler temperature
Ignition phase
Info
Menu
42
°C
Boiler temperature
Flame stabilisation
Info
Menu
42
°C
Boiler temperature
Modulation mode
Info
Menu
42
°C
