30
commissioning
Test function and combustion analysis
The boiler has two pressure taps to measure the combustion gas
temperature, the combustive air and the concentrations of O2
and CO2 on the outside of the ue gas header.
to access these pressure taps, unscrew the screw which holds the
blanking cover and its seal together.
Checking the gas setting
To carry out analyses of combustion, the test function must be
activated.
Maximum gas ow combustion analysis
Activate the test function at the maximum heating power t
--
Wait for the boiler to stabilise before carrying out the combustion
analyses. Check the CO2 value according to the table below.
Important: do not remove silencer 22
N.B.: when the front combustion chamber panel is open, the
CO2 value drops by 0.3%.
If the values taken dier from the table, adjust the gas valve fol-
lowing the procedure described below.
Adjust the CO2 content to ± 0.2 by turning setting screw 50 (2.5
mm allen key)
- tighten to lower the CO2 value
- unscrew to increase the CO2 value
Set the content by turning the screw about a 1/4 of a turn then
wait after each change for approximately 1 minute for the CO2
value to stabilise, then repeat.
Minimum gas ow combustion analysis
Activate the cleaning function at minimum power in either
heating or domestic hot water production.
Wait for the boiler to stabilise before carrying out the combustion
analyses. Check the CO2 value according to the table above.
Important: do not remove silencer 22
N.B.: when the combustion chamber is open, the CO2 value
drops by 0.3%.
If the values taken dier from the table, adjust the gas valve fol-
lowing the procedure described below.
To adjust the CO2 value, remove cap 2, adjust the CO2 content to
± 0.2 by turning setting screw 51 (4 mm allen key)
- unscrew to lower the CO2 value
- tighten to increase the CO2 value
Set the content by turning the screw about a 1/4 of a turn then
wait after each change for approximately 1 minute for the CO2
value to stabilise, then repeat.
Once the settings and analyses are complete, exit test mode, and
reposition the blanking cover and its seal correctly.
8
50
Only a 2.5 mm allen
key must be used. Do
not use a screwdriver
2
Only a 4 mm
allen key must be
used. Do not use a
screwdriver
51
Cleaning function
The PCB allows the appliance to be forced to minimum or
maximum power.
Activate the cleaning function by pressing the Reset button for
5 seconds, the boiler switches to maximum heating power, the
following appears on the display:
To select the function at maximum domestic hot water, press
the
button, the following appears on the display :
To select the function at minimum domestic hot water, press
the
button, the following appears on the display :
The function is automatically deactivated after 10 minutes or by
pressing the Reset button.
Note: the appliance can be forced to minimum or maximum
power from menu 7 (see the section on the display - setting -
diagnostics menu).
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