Adjusting The Air Gas Ratio; Fast Calibration - Immergas VICTRIX 24 TT 1E Instruction And Warning Book

3.8 ADJUSTING THE AIR GAS RATIO

During complete calibration (par. 3.7), you can
modify the values of the air - gas ratio.
To have an exact value of CO in the flue, the
2
technician must insert the sampling probe to
the bottom of the sample point, then check
that the CO value is that specified in the table
2
in (Fig. 3-12). If otherwise, change the value as
described hereunder:
- During calibration, when the frame of the
flame presence starts flashing (indicating the
correct acquisition of the parameters) it is
possible to alter the CO value by pressing the
2
"Reset" button. At this stage the display features
flashing icons: "summer", "winter", "stand-by",
"flame presence", "external connected devices
presence" and the operating temperature is
displayed, alternated with the combustion
setting.
- To increase the combustion setting, press the
"Stand-by" button; to decrease it, press the
"Info" button. As the combustion setting in-
creases, the CO value decreases and vice-versa.
2
- Once the parameter has been altered wait for
the value to be saved (displayed via the frame
of the flame presence symbol flashing).
- To confirm the set value press the "Reset"
button.

3.9 FAST CALIBRATION.

This function allows you to calibrate the boiler
automatically without requiring or giving the
possibility to alter the parameters. Typically
"fast calibration" is used after having set the type
of flue in menu "F", which once altered causes
anomaly "72".
N.B.: before carrying out complete calibration,
ensure that all the requirements indicated in
paragraphs 1.21 and 1.22 have been fulfilled.
N.B.: to access this function it is crucial that
there are no active requests for central heating
or DHW production.
In the event of anomaly "62" or "72" (see parag.
2.6) the boiler cancels any requests by itself.
The energy produced is dissipated via the
heating circuit; alternatively, the energy can be
released from the DHW circuit by opening any
hot water tap.
Caution: in this case the only active temperature
control is the flow probe that limits the maximum
temperature exiting the boiler at 90°C, therefore
be careful not to get burned.
In order to access the fast calibration stage, set
the DHW selector in the "6 o' clock" position and
the heating selector in the "9 o' clock" position,
(Fig. 3-10) and press the "Reset" button for about
3-9
8 seconds until the "chimney sweep" function is
activated; then press the "info" button within
3 seconds.
Once the function is active, the boiler sequential-
ly carries out the procedures required to calibrate
the appliance with the nominal, intermediate and
minimum heat output values.
CO at nominal
2
output
G 20 9.20 ± 0.80
G 31 10.20 ± 1.00
N.B.:
measurements and calibration must be carried out by using regularly-
calibrated instruments.
3-10
CO at intermediate CO at minimum
2 2
output output
9.00 ± 0.80 9.00 ± 0.80
10.00 ± 1.00 10.00 ± 1.00
30
At this stage the display features flashing icons:
"summer", "winter", "stand-by", "external probe",
"solar probe" and the operating temperature is
displayed, alternated with the current operating
heat output.
The calibration stages (nominal, intermediate
and minimum) progress automatically and you
must wait until calibration is complete.
In the event you wish to exit the calibration
mode without storing the parameters acquired,
you must press and hold the "Reset" button for
about 8 seconds, or alternatively disconnect the
boiler from the power supply.
3-11
3-12 3-12