Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 56

Installation
Connections on the Flue Gas Side
Diagram of boiler with wall clearance
Legend
A Boiler flue connection with condensate trap (for
vertical installation)
Flexible flue pipe inlet
B
C-F Possible installation location for the barometric
damper [min. 24 in. (600 mm) from boiler flue
outlet).
Flue pipe cross-section
G
Chimney cross-section
H
Thermal insulation
K
Explanation of possible installation locations:
Very good control, venting effect limited by
C
long flue pipe or small cross-section ratio flue:
chimney; select this installation location only
in extreme circumstances.
D Very good venting effect, good control;
select this installation location only in extreme
circumstances.
E Very good venting effect, good control; retrofit
only in case of masonry chimneys. In case of
multi layered construction, installation only by
qualified contractor; installation location E is
preferred over F.
F Limited control and venting. Due to the low
soot levels, we recommend this installation for
solid fuel boilers and lined chimneys.
56
(continued)
Flue gas connection
Never push the flue pipe too far into the chimney.

Never insert the flue pipe into the brickwork of the

chimney. Instead, connect using a flexible flue pipe
adaptor. Provide a cleaning aperture.
The installation of this unit shall be in accordance with
local codes. In the absence of local codes use:
- In Canada, CSA B365 installation code for solid
fuel burning appliances and equipment (latest edition).
- In USA, NFPA-211 standards for chimneys fire places,
vents and/or solid fuel burning appliances (latest edition).
Venting requirements
This boiler needs fresh air for safe operation and must be
installed so there are provisions for adequate combustion
and ventilation air. Inadequate supply of combustion air
can cause poisonous flue gases to enter living space which
can cause severe personal injury or loss of life.
This boiler must be properly vented. Use a vent material
certified for use with solid-fuel fired equipment.
This boiler's venting system must be listed to ULC S-629
(Canada) or UL 103HT (USA) – Standard for Solid and
liquid Fuel Chimneys. Use current revision of codes.
This boiler shall be connected to:
a) a masonry chimney conforming to local regulations or,
in the absence of such regulations, to the requirements
of the National Building Code
or...
b) a certified factory-built chimney.
A flue pipe serving this boiler shall be constructed of steel
or other suitable material with a melting point of not less
than 2000°F (1100°C). Galvanized steel shall not be used.
Vitoligno 300-C Installation/Service