Vaillant ecoFIT pure Series Installation And Maintenance Instructions Manual page 34

4. Remove the air intake pipe (1).
5. Push the clip (2) upwards.
6. Remove the flue pipe (3).
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Installation and maintenance instructions ecoFIT pure 0020230535_07
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7. Remove the plugs from the gas valve assembly.
8. Remove the gas-air mixture unit .
9. Remove both burner seals (5) from the burner hood.
10. Remove the burner (4).
12.7 Cleaning the heat exchanger
1. Check the heat exchanger for damage and dirt.
2. If required, clean and replace the heat exchanger.
3. Protect the open electronics box from spraying water.
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4. Clean the ribs of the heat exchanger (1) with water.
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The water runs out via the condensate tray.
12.8 Checking the burner
1. Check the surface of the burner for damage. If you see
any damage, replace the burner.
2. Install the two new burner seals.
12.9 Checking the ignition electrode
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1. Disconnect the connection (2) and the earth cable (1).
2. Remove the fixing screws (3).
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