Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 39

Connections on the flue gas side
D
C
B
A
Fig. 33
Note
Install a flexible connection piece in the flue pipe.
■
This avoids transmission of sound caused by the flue
gas fan.
Additional on-site sound insulation measures may be
required.
■ Never brick the flue pipe into the chimney.
Flue gas temperatures below 90
partial load operation of the boiler.
■ Connect the boiler to a moisture-resistant chim-
ney.
■ Install a boiler flue connection with condensate trap
in the flue pipe.
Boiler flue connection with condensate trap (for
A
vertical installation)
Cleaning aperture with test connector for checking
B
flue gas temperature and emissions
(Distance from the test connector to the boiler flue
outlet and last pipe bend: 2 x
Thermal insulation
C
D Flexible flue inlet
(cont.)
1. Install the flue pipe with a rise to the chimney (pref-
2. The entire flue pipe with cleaning aperture must be
3. Thermally insulate the flue pipe, minimum insula-
4. Install a draught limiter (accessories) in the chim-
C can occur during
º
)
7
erably 45°).
Flue pipe (internal diameter):
Max. flue pipe length: 3000 mm
Note
Never push the flue pipe too far into the chimney.
gas-tight.
tion thickness 30 mm.
ney.
Separate installation instructions
Installation sequence
150 mm
7
39