Vaillant ecoTEC plus 612 Instructions For Installation And Servicing page 112

FITTING AIR/FLUE DUCT EXTENSIONS
1
Fig. 6.1: Arrangement of 2 x 87° elbows – View from above
1
Fig. 6.2: Arrangement of 2 x 87° elbows – View from front
2
1
Fig. 6.3: Arrangement of 2 x 87° elbows – View from side
56
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2
2
*
* = 3
*
* = 3
How to install
2x 87° elbows
• When using 2 x 87° elbows
follow fig. 6.1 to fig. 6.3 to avoid
obstructions on outer wall.
Note: The elbows must be
correctly aligned to avoid undue
stress on the joints and risk of
leakage.
The elbow fitted to the top of the
boiler (1) should be twisted by 3°
to ensure that the second 87° el-
bow (2) exits the wall perpen-
dicular.