Checking The Burner; Cleaning The Condensate Duct; Cleaning The Air Separation System - Vaillant ecoTEC plus VU Series Installation And Maintenance Instructions Manual

8 Inspection and maintenance
8.6

Checking the burner

1. Check the surface of the burner for damage. If you see
any damage, replace the burner.
2. Replace the silicone seal (1) and the silicate cord (2).
3. Check the burner insulation (3) on the burner flange
and, if required, replace the burner insulation.
8.7

Cleaning the condensate duct

1
2
1. Observe the installation manual for the condensate
trap's cartridge.
2. Remove the condensate trap's cartridge from below the
product.
3. Pull out the clamp from below the heat exchanger.
4. Remove the elbow connector.
5. Remove the condensate trap (2) and the corrugated
pipe (1). In doing so, note the position of the latching
lugs.
6. Clean the condensate trap, the corrugated pipe and the
condensate trap's cartridge.
7. Fill the condensate trap's cartridge with water.
8. Install the components with new seals and six new, self-
locking nuts.
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8.8
8.8.1
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2
3
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2.
3.
4.
5.
8.8.2
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2.
3.
4.
5.
6.
7.
8.
9.
Installation and maintenance instructions ecoTEC plus 0020029173_04
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Tightening torque: 6 Nm

Cleaning the air separation system

Cleaning or replacing the filter in the air
separator
Unscrew the brass cover (1) on the steel casing (3).
Pull the filter (2) up and out.
Use hot water to clean the filter, or replace the filter.
Insert the filter into the air separator.
Screw in the brass cover tightly.
Cleaning the air separator
1
2
3
4
Unscrew the nut (4).
Unscrew the cap nut (1).
Remove the cable harness.
Slide the casing (3) forwards and pull the entire air sep-
arator forwards and out.
If required, remove the pipe (2).
Remove the filter.
Use hot water to clean the air separator and the filter.
Replace all of the O-rings.
Reinstall the air separator.
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2
3