Removing The Gas-Air Mixture Unit; Cleaning The Heat Exchanger - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

11.6

Removing the gas-air mixture unit

Note
The gas-air mixture unit consists of three main
components:
– Ventilator
– Gas valve
– Burner cover
1. Switch off the product via the main switch.
2. Close the gas isolator cock.
3. Remove the front casing. (→ Page 9)
4. Remove the air intake pipe (1).
5. Push the clip (2) upwards.
6. Remove the flue pipe (3).
0020238195_01 ecoTEC plus Installation and maintenance instructions
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1
B
2
A
B
C
3
D
Inspection and maintenance 11
B
C
7. Remove the plugs from the gas valve.
8. Remove the gas-air mixture unit.
9. Remove both burner seals from the burner cover.
1
10. Remove the burner (4).
11.7

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 folded down electronics box against sprayed
water.
1
4. Clean the ribs of the heat exchanger (1) with water.
◁
The water runs out via the condensate tray.
D
A
23