5. Using adjusting screw B, adjust the percentage of O
2
/CO
2
for the
gas type being used to the nominal value. This should always be in
side the highest and lowest setting limit.
6. Set the boiler back to the normal operating status.
7.7 Final instructions
1. Remove the measuring equipment.
2. Screw the cap on to the flue gas measuring point.
3. Put the front casing back. Tighten the two screws by a quarter of a
turn.
4. Press the
key to return the boiler to normal operating mode.
5. Heat the CH system up 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. Specify the gas type used on the type plate.
11. Instruct the user in the operation of the system, boiler and controller.
12. Inform the user of the maintenance to be performed.
13. Hand over all manuals to the user.
Fig.41 Position of adjusting screw B
AD-0000072-01
B
B
B
7 Commissioning
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