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Fig.95
Checking the burner
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11
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10.3
Specific maintenance work
7686707 - v.01 - 06092018
10.2.10 Checking the burner
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1. Switch off the boiler's electrical connection.
2. Close the gas tap under the boiler.
3. Close the main gas tap.
4. Unscrew the two screws located under the front housing by a quarter
5. Press the clips on the sides of the instrument box inwards to unlock it,
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6. Remove the air inlet flue on the venturi.
230V
7. Unscrew the bottom nut on the gas valve unit.
8. Disconnect the connectors located under the gas valve unit and the
X91
9. Release the 2 clips holding the fan/mixing elbow unit in place on the
10. Remove the fan together with the mixing elbow unit.
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11. Lift the burner, along with the heat exchanger gasket.
12. Check the burner for contamination and that the burner deck is free
13. Check the ionisation/ignition electrode.
14. Reassemble the unit in reverse order.
15. Open the gas inlet valves and switch on the mains supply to the
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AD-0001242-03
Perform the specific maintenance work if this proves to be necessary
following the standard inspection and maintenance work. To conduct the
specific maintenance work:
Warning
It is not necessary to clean the condensate collector. Never
remove the condensate collector, as it cannot be refitted
afterwards.
The heat exchanger has a treated surface and therefore does
not need to be cleaned. Cleaning with cleaning tools, chemicals,
compressed air or water is not permitted.
turn and remove the front housing.
then tilt the instrument box forwards.
fan.
heat exchanger.
from signs of cracking and/or damage. If not, replace the burner.
Caution
Remember to replace the plugs on the fan correctly.
Check that the gasket is correctly positioned between the mixing
elbow and the heat exchanger. (Completely flat in the
appropriate groove means it is leak proof).
boiler.
10 Maintenance
AMC
103
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