Baxi Luna HT 1.850 Gebrauchsanleitung Seite 90

Figure 7
Flue duct terminal
coaxial Ø 110/160 mm
Vertical two-pipe
horizontal two-pipe
... coaxial flue - air duct (concentric)
This type of duct allows to disengage ex­haust gases and to draw
combustion air both outside the building and in case a LAS flue
is fitted.
The 90° coax­ial bend allows to connect the boiler to a flue-air
duct in any direction as it can rotate by 360°. It can moreover be
used as a supplementary bend and be coupled with a coax­ial
duct or a 45° bend.
If the flue outlet is placed outside, the flue-air ducting must pro-
trude at least 18mm out of the wall to allow alluminium weathering
tile to be fitted and sealed to avoid water leakages.
Ensure a minimum downward slope of 1 cm towards the outside
per each metre of duct length.
• A 90° bend reduces the total duct length by 1 metre.
• A 45° bend reduces the total duct length by 0.5 metre.
InstructIons pertaInInG to the InstaLLer
Max. length each 90° bend
of flue duct reduces the duct
max. length by
10 m 1 m
15 m 0,5 m
20 m 0,5 m
each 45° bend
reduces the duct
max. length by
0,5 m
0,25 m
0,25 m
concentric outlet
Figure 8
90
Flue outer
terminal terminal
diameter diameter
163 mm 160 mm
163 mm 110 mm
- 110 mm
912.198.1 - GB