Viessmann VITOCROSSAL 200 Type CM2 Technical Manual page 27

Design information
A
B
A
B
A Flue gas
B Ventilation air
A
B
A
C
1
B
A Flue gas
B Secondary ventilation
C Ventilation air
A
B
A Flue gas
B Ventilation air
Gas condensing boilers
(cont.)
A
C
2
Connection to a room sealed balanced flue (type C
2008)
The boiler draws combustion air from the atmosphere through the
annular gap inside the room sealed balanced flue and expels the flue
gas to the outside through the moisture-resistant internal pipe via the
roof.
Separate ventilation air and flue gas routing (type C
2008)
1 The boiler draws combustion air from the atmosphere via a sep-
arate ventilation air line, and expels flue gas to the outside through
the flue pipe via the roof.
For a detailed description, see page 35.
2 The boiler draws combustion air from the atmosphere via a sep-
arate ventilation air line via the roof, and expels flue gas to the
outside through the flue pipe via the roof (only if the boiler is
installed in an attic).
For a detailed description, see page 37.
Separate ventilation air and flue gas routing (type C
2008)
The boiler obtains combustion air from the atmosphere via a separate
ventilation air line through an external wall, and expels flue gas through
a moisture-resistant chimney via the roof.
to TRGI
43
8
to TRGI
53
to TRGI
83
VIESMANN
27