Vaillant ecoTEC plus VU Series Installation Manual page 26

1
Danger!
Risk of poisoning due to escaping flue
gas.
When disconnecting the pipes, flue gases
may escape.
▶
Ensure that the latching lug on the upper
side of the terminal securely snaps into
place in the flue pipe's recess.
▶
Ensure that the seal is positioned cor-
rectly.
2. Push the new variable terminal onto the flue pipe so
that it snaps into place.
3. Slide the flue pipe, together with the terminal, back into
the air pipe.
–
The air pipe's seam must lie at the top.
4. Carefully slide the flue pipe back into the sleeve of the
pipe or elbow located behind it.
5. Make sure that the two latching lugs (1) snap into
place.
6. Install the wall seal on the variable terminal.
7. Install the extensions on the variable terminal.
5.8.5.4 Installing extensions
1. Install the flue system from the wall connector to the
flue outlet.
–
Allow expansion space of 1 cm in each sleeve.
–
Ensure that all pipe joints are absolutely leak-tight.
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2. Secure the extensions to the wall using the pipe
clamps.
–
Use one pipe clamp for each extension directly
beside the sleeve.
–
Upstream of each elbow, install another pipe clamp
on the extension.
–
Secure the 87° elbow with bird-guard grille using a
separate pipe clamp.
Air/flue pipe installation manual 0020308120_02
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