Viessmann Vitoligno 300-C Installation And Service Instructions Manual page 28

Installation sequence
Connections on the flue gas side
Note
■ Install a flexible connection piece in the flue to pre-
vent sound transmission from 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.
C
B
A
Fig. 20
Cleaning aperture with test connector for checking
A
flue gas temperature and emissions
Test connector calming stretch
Upstream of the test connector:
■
Total 3 x of the flue pipe
7
– To the last pipe bend: Min. 2 x
– To the flue outlet: Min. 1 x
■ Downstream of the test connector:
At least 1 to 2 x
7
Thermal insulation
B
Flexible flue pipe inlet
C
28
(cont.)
C can occur during
º
500
7
7
of the flue pipe
1. Install the flue pipe rising to the chimney (prefera-
bly 45°).
Flue pipe (internal diameter)
6 to 18 kW
8 to 24 kW
11 to 32 kW
13 to 40 kW
16 to 48 kW
Max. flue pipe length to the chimney: 3000 mm
Note
Let the flue pipe connector protrude about 10 mm
into the chimney. This prevents condensate or rain-
water from the chimney running into the flue pipe.
2. The entire flue pipe with cleaning aperture must be
gas-tight.
3. Thermally insulate the flue pipe, minimum insula-
tion thickness 30 mm.
4. Install a draught limiter (accessories) in the chim-
ney.
Draught limiter installation instructions
130 mm
7
150 mm
7