Vaillant ecoTEC plus VU Series Installation Manual page 48

Arrangement of the 2 x 87° elbows – View from the front
Arrangement of the 2 x 87° elbows – View from the side
▶
When using elbows to route long flue pipework in a
corner, observe the following figures.
Connecting extensions with 87° elbows
1
max. 5 m
▶
To ensure that you can guide a second 87° elbow (2) at
a right angle through the wall, install the elbow (1) on the
top of the boiler, at a 3° rotation.
48
3°
3°
90°
2
*
* = 3°
Connecting extensions with 45° elbows
max. 5 m
▶
Install an 87° elbow at an angle of 3° between the wall
and the air/flue pipework or use two 45° elbows.
▶
Connect all of the pipe joints with air pipe clamps.
(→ Page 54)
Air/flue pipe installation manual 0020308120_02
90°