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 backflow
temperatures of the rising speed are checks.
For the FF version, the pressure is detected by
minimum pressure switch (from July 2009).
The gas valve is supplied at the set power for
the Soft Ignition (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.
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