4. If the measured value is outside of the values given in the table,
correct the gas/air ratio.
5. Use the adjustment screw B to set the percentage of O
2
for the gas
type being used to the nominal value.
Increasing the gas flow, will decrease O
2
. The direction in which the
adjusting screw must be turned to increase or decrease the gas flow
is indicated on the gas control valve. The 5- to 9-section boilers are
supplied with a different gas control valve from the 10-section boiler.
See drawing for the position of adjusting screw B for low load.
6. Check the flame through the inspection glass. The flame must not
blow off.
7. Repeat the full load test and the low load test as often as necessary
until the correct values are obtained.
8. Set the boiler back to the normal operating status.
7.3
Final instructions
1. Remove the measuring equipment.
2. Screw the cap on to the flue gas measuring point.
3. Seal the gas valve unit.
4. Put the front casing back.
5. Heat up the central heating system to approximately 70°C.
6. Switch the boiler off.
7. Vent the central heating system after approx. 10 minutes.
8. Turn on the boiler.
9. Check the water pressure. If necessary, top up the central heating
system.
10. Fill in the following data on the sticker included, and attach it next to
the data plate on the appliance.
The gas type, if adapted to another gas;
The gas supply pressure;
The flue type, if set to overpressure application;
The parameters modified for the changes mentioned above.
11. Optimise the settings as required for the system and user
preferences.
See
For more information; Settings, page 89 and User instructions,
12. Save the commissioning settings on the control panel, so they can be
restored after a reset.
13. Instruct the user in the operation of the system, boiler and controller.
14. Inform the user of the maintenance to be performed.
15. Hand over all manuals to the user.
Fig.73
Adjusting screw B
AD-0000493-01
B
3
B
2.5
Fig.74
Example filled-in sticker
AD-3001124-01
Adjusted for
/ Réglée pour /
Ingesteld op / Eingestellt auf
/ Regolato per / Ajustado
para / Ρυθμισμένο για /
Nastawiony na / настроен
для / Reglat pentru /
настроен за / ayarlanmıştır /
Nastavljen za / beállítva/
Nastaveno pro / Asetettu
kaasulle / Justert for/
indstillet til/ ضبط ل :
C
(10)3(X)
Gas
C
(12)3(X)
mbar
Parameters
/ Paramètres /
Parameter / Parametri /
Parámetros / Παράμετροι /
Parametry / Параметры /
Parametrii / Параметри /
Parametreler / Paraméterek
/ Parametrit / Parametere /
Parametre / المعلمات :
G20
20
DP003 - 3300
GP007 - 3300
GP008 - 2150
GP009 -
7 Commissioning
64
C 340 / C 640
7762666 - v.02 - 29092020
