elco VL 2.120 D, Руководство по эксплуатации

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11/2010 - Art. Nr. 4200 1029 8600A 17
- If the boiler heating
request is not present , the
boiler remains on standby.
In this case, it is still possible
to return to the previous
setting menu "Pre-setting
without flame". To do this,
position the cursor on the
symbol
and confirm with
the button .
- If a boiler heating request
is present (T1-T2 contact
closed), the burner starts.
The air flap is opened to move
to the pre-ventilation position.
Pre-ventilation and pre-
ignition
The air flap switches to the
ignition position.
The fuel valve opens.
Awaiting flame signal
If no flame is detected at the
end of the safety time
, the
control unit switches to
malfunction mode.
Flame detected
Flame stabilisation
The control unit awaits the
regulation authorisation.
Commissioning
Setting the flame
en