Vaillant ecoTEC plus 412 Installation Manual page 45

8
7
1 Air pipe clamp
2 External wall extension
3 External wall console
clip
4 Air intake piece
5 Wall duct elbow
6 Collar, divided
6. Preinstall the wall duct elbow, the air intake piece and
an external wall extension.
–
The air intake port must lie at least 1.0 m above
the surface of the terrain so that the air intake port
cannot be blocked by snow.
–
The air intake piece can be located at any height.
You can find restrictions in the "Pipe lengths" table.
–
However, the air intake piece must always be ar-
ranged vertically so that no rainwater can get into
the air intake ports.
–
The sleeve of the flue pipework must always point
in the direction of the flue gas terminal.
7. In each case, hang an air pipe clamp (1) on an external
wall extension (2) and the air intake piece (4).
8. Slide the air intake piece and the wall duct elbow (5) to-
gether until they reach the stop, along with the external
wall extension and the air intake piece.
8000026412_01 Air/flue pipe installation manual
1
2
3
4
min.
50 mm
5
6
9
10
11
7 Internal extension (for
0020042748 only)
8 Collar
9 Outer bead
10 Clamping device
11 Outer bead
9. Place the air pipe clamp over the two external beads(9,
11) and tighten the clamping device (10).
10. Insert the wall duct elbow (5) with air intake piece and
external wall extension into the wall opening.
11. Place the clip of the external wall console (3) around
the external wall extension and tighten the two clamp-
ing screws.
12. If required, shorten the extension (7) to the required
length.
13. Place the extension on the wall duct elbow from the
inside.
14. Fill the gap between the air pipe and the breakthrough
from inside and outside with mortar. Leave the mortar
to harden.
15. Screw the collar (8) from inside.
16. Screw the collar (6) from outside.
17. Secure the pipe brackets to the external wall at a max.
distance of 2 m.
195
18. For the adjustment range of 90 mm to 160 mm, remove
the external bracket.
–
The adjustment range of the external wall pipe
brackets ranges from 50 mm to 90 mm. For larger
wall clearances, extensions are required for the ex-
ternal wall pipe brackets. This allows you to reach a
wall clearance of 300 mm.
19. Screw the external wall pipe brackets directly to the
lower section of the extension for the external wall pipe
brackets.
20. Install the sections of flue pipework and, if required, the
inspection opening and the elbows and the terminal.
25
50 - 90 mm
45
90 - 130 mm
140 - 330 mm
45