Vaillant ecoTEC plus VU Series, Installation Manual, Page: 29 / 60

0020308120_02 Air/flue pipe installation manual
29
Danger!
Risk of poisoning due to escaping flue
gas.
If you turn the flue pipe when removing the
terminal from the air pipe, the subsequent
flue pipe may come loose from the spacer.
▶
Ensure that the flue pipe does not twist
when you remove it.
4. Pull the terminal out of the air pipe together with the
flue pipe.
5. Release the catch between the terminal and the flue
pipe by twisting the two components in opposite direc-
tions.
6. Remove the terminal from the flue pipe.
7. Pull the terminal piece out of the pipe adapter.
B
A
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.
8. Push the 87° elbow into the pipe adapter and allow it to
lock into place.
9. Push the variable terminal onto the flue pipe so that it
snaps into place.
10. Slide the flue pipe, together with the terminal, back into
the air pipe.
11. Carefully slide the flue pipe back into the sleeve of the
pipe or elbow located behind it.
12. Make sure that the two latching lugs (1) snap into
place.
13. Install the wall seal on the variable terminal.
5.9.5.4 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.