DOMUSFIRE C29 - C35
19
4.3.2 Startup stage
To light the boiler, press the button ‘P4’ for 3 seconds: the message ‘START’ will appear on the display.
This stage is automatic and managed entirely by the electronic controller without the possibility of changing the
parameters.
Alternatively the boiler can be lit by pressing the buttons P4 and P5 together for 3 seconds. The message
AWAITING REQUEST appears on the display. With this mode the boiler switches to standby status and carries out
the lighting-start stage only if a request for heat is recognised, e.g. to heat the water or for DHW (if available).
The boiler carries out the startup stages in sequence according to the procedures defined by the parameters that
manage levels and times, reaching the work condition unless anomalies or alarms occur, according to the following
table:
status
duration
devices
conditions for going to next status
igniter
Fume
extr.
auger
exch.
OFF
-
OFF
OFF
OFF
OFF
ON/OFF
START - PREHEAT
40 sec.
ON
ON
OFF
OFF
time elapsed 40 sec.
PELLET PRELOAD
Pr40
ON
ON
ON
OFF
time elapsed Pr40
AWAITING FLAME
Pr41
ON
ON
OFF
OFF
time elapsed Pr41
PELLET LOADING
-
ON
ON
ON
OFF
fume temperature > Pr13
FIRE PRESENT
Pr02
OFF
ON
ON
ON
time elapsed Pr02
WORK
-
OFF
ON
ON
ON
ambient temperature < SET temperature fume
temperature < Pr14
WORK MODULATE
-
OFF
ON
ON
ON
ambient temperature < SET temperature water
temperature > water SET fume temperature < Pr14
BRAZIER CLEANING
Pr12
OFF
ON
ON
ON
with frequency Pr03
WORK
-
OFF
ON
ON
ON
ON/OFF to switch off
FINAL CLEANING
Pr39 (*)
OFF
ON
OFF
-
(*) Pr39 starts when Tfumes < Pr13
After a certain time has elapsed, if the fume temperature has not reached the permissible minimum value the boiler
goes in alarm status.
- Do not use flammable liquids to light the unit.
- In case of persistent failed lighting, contact the Service Centre.
Clock
Dialogue box
Water temperature
Storage tank-Puffer H
2
0
temperature
Button ‘P4’
