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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 O
and CO on the outside of the flue 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.
Test function
The PCB allows the appliance to be forced to minimum or
maximum power.
Activate the test function by pressing the Reset button for 5
seconds, the boiler switches to maximum heating power, the
following appears on the display:
Max Heating Power
Massima Riscaldamento
To select the function at maximum domestic hot water, turn the
encoder, the following appears on the display:
Max Domestic Hot Water Power
Massima Sanitaria
To select the function at minimum domestic hot water, turn the
encoder, the following appears on the display:
Potenza Minima
Minimum Power
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).
Maximum gas flow combustion analysis
Activate the test function at the maximum heating power t
3
Supplied By www.heating spares.co Tel. 0161 620 6677
Wait for the boiler to stabilise before carrying out the combustion
analyses. Check the CO value according to the table below.
Important: do not remove silencer 22
Maximum or mini-
mum CO
G0
G31
N.B.: when the front combustion chamber panel is open, the
CO2 value drops by 0.3%.
If the values taken differ from the table, adjust the gas valve fol-
lowing the procedure described below.
Adjust the CO content to ± 0.2 by turning setting screw 50 (2.5
mm allen key)
- tighten to lower the CO value
- unscrew to increase the CO 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 CO
value to stabilise, then repeat.
8
Only a 2.5 mm allen
key must be used. Do
not use a screwdriver
Minimum gas flow 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 CO 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 differ from the table, adjust the gas valve fol-
lowing the procedure described below.
To adjust the CO value, remove cap 2, adjust the CO content to
± 0.2 by turning setting screw 51 (4 mm allen key)
- unscrew to lower the CO value
- tighten to increase the CO 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 CO
--
value to stabilise, then repeat.
Once the settings and analyses are complete, exit test mode, and
reposition the blanking cover and its seal correctly.
4 kW
30 kW
CO
(%)
9.0 ± 0.
9.0 ± 0.
10.7 ± 0.
10.0 ± 0.
2
51
Only a 4 mm
allen key must be
used. Do not use a
screwdriver
38 kW
9.4 ± 0.
10.6 ± 0.
50
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