Immergas VICTRIX 75 - Burner Assembly; Burner Description; Ignition and Detection Electrodes

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STV75 ed 01/08 VICTRIX 75
Burner.
is is a cylindrical burner (5) consisting of three concentric
plates appropriately perforated and made of a special stainless
steel highly resistant to high temperatures and corrosion.
It is tted inside the condensation module, in a sealed com-
bustion chamber closed by a ange (6) to which the burner is
secured and which simultaneously ensures direct connection
with the air-gas mix duct (4).
Pre-mixing, the absence of secondary air and the construction
characteristics of the burner ensure high combustion perform-
ance and very low pollutant emissions (see technical data).
anks to the high resistance to temperatures of the materi-
als used, it is possible to operate with a very low ame up
to a minimum output of 18.1 kW (15566 kcal/h) (25 % of
nominal output).
An integrated electronic board sees to ignition and controls
both the ignition (7) and detection (9) electrodes.
Ignition electrodes (7).
ey are controlled by the integrated electronic board which
produces an electrical discharge between them that ignites
the air-gas mix.
Electrode (8) has no ceramic insulation and is earthed directly
(blind electrode).
ey are positioned on the left of the burner and secured on
the ange (6).
Detection electrode (9).
It is controlled by the integrated electronic board and detects
burner ignition.
It also acts as a ue safety device when any air intake or combus-
tion product extraction problems cause the burner to operate
below minimum output.
In this case, in fact, we have a ame-stop condition because
there is no detection by the electrode.
To protect the combustion circuit, this same stoppage prevents
the module from lling with water whenever there are conden-
sation drainage problems (siphon blockage, etc.).
e electrode is mounted on the burner ange (6), at the bot-
tom right of the burner.
Note: in case of ignition block it’s required to check the dis-
tances of the ignition electrodes and of the detection electrodes
sticking to the values shown in the gure at this side.
Check moreover that there are no insulating cinders on the
detection electrodes.
GAS
AIR
4
P1
6
5
8
7
9
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