Checking The Burner And Cleaning The Heat Exchanger - Baxi MainEco Combi 24 Installation And Service Manual

Baxi MainEco Combi and System 24 - 28 - 35 / 18 - 24
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8.2.10.
1. Ensure that the boiler is switched off. Close the gas valve of the
5 2. Take the bracket off the flue gas discharge pipe. Remove the flue
3. Remove the air inlet flue on the venturi.
4. Unscrew the gland underneath the gas block.
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5. Open the protective cover for the fan on the top and remove all the
6. Close the fan's protective cover.
7. Disassemble the ignition electrode. Check the ignition electrode
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8. Unclip the 2 locking clips that attach the gas/air unit to the heat
9. Remove the gas/air unit by moving the gas/air unit upwards and
10.Tilt the burner and remove it, along with the heat exchanger
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11.Use a vacuum cleaner fitted with a special endpiece (accessory)
12.Thoroughly clean with the vacuum cleaner again without the top
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13.Check (using a mirror, for example) whether any dust can still be
14.The burner does not require any maintenance, it is self-cleaning.
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15.Install the ignition electrode.
16.To re-assemble, perform the above actions in reverse order.
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17.Open the gas inlet valves and switch on the mains supply to the
T004777-B
Checking the burner and cleaning the heat
exchanger
CAUTION
Always examine any seals or gaskets, replacing where
necessary. Where a seal or gasket is supplied with a spare
part it should be used, irrespective of the condition of the
original.
boiler. Remove the front panel.
gas discharge pipe.
plugs from the PCB.
for wear. Replace if necessary.
¼ See also: "Replacing the ionization/ignition electrode", page
58
exchanger.
then forwards.
gasket.
to clean the top part of the heat exchanger (combustion chamber).
cleaning brush on the endpiece.
seen. If so, hoover it up.
Check that there are no cracks and/or other tears on the surface
of the dismantled burner. If this is not the case, replace the burner.
CAUTION
Remember to replace the plugs on the PCB for the
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gas/air unit.
Check that the gasket is correctly positioned between
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the mixing elbow and the heat exchanger.
(Completely flat in the appropriate groove means it is
leak proof).
boiler.
8. Checking and maintenance
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