Inspection and maintenance
52
ecoTEC plus installation and maintenance instructions 0020134823_01
13
>
Remove the plug from the upper safety cut-out (
8
).
>
Undo the screws (
6
) on the burner door.
>
Remove the complete gas-air mixture unit (
5
) from the
heat exchanger (
7
).
>
Check the burner and the heat exchanger for damage
and dirt.
13.5.2
Cleaning the heat exchanger
b
Caution.
Risk of material damage from spraying
water.
If you fail to protect the electronics box
adequately, water can penetrate the box
during cleaning and may damage the elec-
tronics.
>
Protect the folded down electronics box
against sprayed water.
>
Remove the gas-air mixture unit (
¬ section 13.5.1
).
1
13.8
Cleaning the heat exchanger (example: VU GB 806/5 - 5)
b
Caution.
Risk of damage to the heat exchanger.
>
You should neither loosen nor tighten
the screws (
2
).
Before flushing, we recommend removing the condensate
siphon so that the neutralising unit is not damaged.
>
Rinse away any dirt from the burner chamber wall and
through the pipes (
1
) of the heat exchanger using a
strong jet of water or use a plastic brush.
The water flows out of the heat exchanger through the
drain.
If you have removed the condensate siphon, reinstall it
below the boiler after cleaning (
¬ section 13.5.5
) so that
the heat exchanger is ready for operation again.
13.5.3
Checking the burner
1
2
4
3
13.9 Check the burner (Example: VU GB 806/5 - 5)
>
Check the surface of the burner for damage. If you
notice any damage, replace the burner and seal
(
¬ section 15.4
).
>
Check the insulating mat (
2
) on the burner door. If you
notice any signs of damage, replace the insulating mat
(
¬ section 15.5
).
>
Check the burner door seal (
4
) on the burner door. If you
notice any signs of damage, replace the seal. See
"Replacing the burner" (
¬ section 15.4
).
13.5.4
Replace the ignition and ionisation
electrode
We recommend that you replace the ignition and ionisation
electrode every 2 years.
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