The gas is supplied at the set power for the
Soft Ignition stage (adjustable from the control
panel with parameter 220).
Flame ionization if checked. (by the detection
electrode).
If there is no ignition (o missed detection) there
will be a block shutdown 5 01.
Safety time 8 sec.
Spark Generator
and gas valve ON
Occurs after air pressure switch enabling
The check is made with heating return and
delivery probes.
ΔT del-ret and the delivery and return
temperatures of the rising speed are checks.
For the FF version, the pressure is detected by
minimum pressure switch (from July 2009).
Air pressure switch enabling allows to pass to
the following stage.
If this does not occur, after 20 seconds, the
boiler will stop for safety
6 P1
the Fan remains
on waiting for consent (sealed chamber models).
On the open chamber models instead a
thermostat control is performed (which continues
even while it is operating). If the smoke
thermostat is enabled there will be a block
shutdown
6 01
.
Air pressure switch
CONTROL
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