Vaillant ecoTEC plus VU GB 5-5 Series Installation And Maintenance Instructions Manual page 30

9 Inspection and maintenance
▶
Undo the four screws on the flange connection (3) to the
gas valve assembly.
Condition: Applies for 100 kW and 120 kW
▶
Undo the four screws on the flange connection (3) to the
gas valve assembly.
6. Move the gas pipe (4) to the side.
30
13
3
4
11
10
9
8
13
12
10
3
8
11
4
Danger!
Risk of poisoning and fire caused by es-
caping gas!
The gas pipe may become damaged.
▶
Ensure that you do not damage the seals
on the gas pipe when removing and in-
stalling the gas-air mixture unit.
7. Remove the ionisation line plug from the ionisation elec-
trode (11), and remove the earth connection plug from
the earthing lug.
8. Remove the ignition line plug and the earth connec-
tion for the ignition electrode (9) from the ignition trans-
former.
Note
The cable is firmly connected to the ignition
electrode.
Installation and maintenance instructions ecoTEC plus 0020134823_07
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1006/5-5
1206/5-5
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