Cleaning The Heat Exchanger; Checking The Burner; Checking The Ignition Electrode - Vaillant ecoTEC plus VU Series Installation And Maintenance Instructions Manual

4. Remove the air intake pipe (1).
5. Push the clip (2) upwards.
6. Remove the flue pipe (3).
0020238195_07 ecoTEC plus Installation and maintenance instructions
A
1
B
2
A
B
C
3
D
C
5
B
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.
1
4. Clean the ribs of the heat exchanger (1) with water.
◁
The water runs out via the condensate tray.
12.8

Checking the burner

▶
Check the surface of the burner for damage. If you see
any damage, replace the burner.
12.9

Checking the ignition electrode

3 4
2
1
1. Disconnect the connection (2) and the earth cable (1).
2. Remove the fixing screws (3).
3. Carefully remove the electrode from the combustion
chamber.
D
4
A
5
33