Viessmann Vitodens 200 Technical Manual page 130

4.1 Flue gas systems
Flue gas system installation options for balanced flue operation
(separate ventilation air and extract air apertures are not required)
Inside the living space with one or several full floors above
A
B
A
B
A Flue gas
B Ventilation air
4
A
B
A Flue gas
B Ventilation air
130
B A
Routing through a duct
(type C , according to TRGI '86/96)
63x
The heat generator obtains combustion
air from the atmosphere through the
annular gap inside the duct (chimney) and
extracts the flue gas via the flue pipe
above roof level. For condensing boilers
> 50 kW the installation location must be
ventilated even for balanced flue
operation. The duct is not part of the
standard delivery. For a detailed
description, see pages 135 to 139.
Retrofitted ducts
Installation in a subsequently constructed
duct with Building Regulation approval
comprising individual duct elements (e.g.
as supplied by SIMO or Skoberne) or
mineral profiles (e.g. as supplied by
Promatect).
For a detailed description of ducts,
see page 149.
Outside panel connection
Only with existing system protection
(type C , according to TRGI '86/96)
13x
(permissible up to a rated output of 11 kW
central heating or 28 kW DHW heating)
According to the LandesFeuVo, issue 1999
[Germany], connection via an outside
wall is only permissible in individual
cases, where another flue gas outlet is
not appropriate for technical or
economical reasons.
The heat generator obtains combustion
air from the atmosphere via a concentric
coaxial pipe mounted to the wall and
extracts flue gas via the outside panel to
the atmosphere. For a detailed
description, see page 143.
Horizontal roof outlet
(type C , according to TRGI '86/96)
13x
(no limitation of the rated output)
The heat generator obtains combustion
air from the atmosphere at the roof
dormer via a concentric coaxial pipe and
extracts flue gas at the dormer to the
atmosphere.
VITODENS