Viessmann WB1A007 Technical Guide

1.7 Flue system installation options for room sealed operation
In accordance with the FeuVO [check local fire regulations], a venti-
lation air aperture is required in the installation room for a total rated
heating output of 100 kW or more.
Inside occupied rooms (living space) with one or more full storeys above
A
Flue gas
B
Ventilation air
Routing through a shaft (type C
93x
, to CEN/TR 1749)
The boiler draws combustion air from the outside through the annu-
lar gap inside the shaft (chimney) and expels the flue gas via the flue
pipe to above the roof. For condensing boilers > 50 kW the installa-
tion room must be ventilated even for room sealed operation. The
shaft is not part of the standard delivery. For a detailed description,
see from page 13.
Retrofitted shafts
Installation in a retrofitted shaft approved by the building inspector-
ate [Germany] consisting of individual shaft elements (e.g. as sup-
plied by SIMO, Wienerberger or Skoberne) or including mineral pro-
files (e.g. from Promatect). For a detailed description of shafts, see
page 27.
A
Flue gas
B
Ventilation air
External wall connection
Only for existing flues with exemption rights
(Type C
13x
, to CEN/TR 1749)
Permissible up to a rated heating output of 11 kW for central heating
or 28 kW for DHW heating.
According to the Landes-FeuVO, issue 1999 [Germany], an external
wall connection is only permissible in individual cases where flue gas
routing by other means is not appropriate for technical or economic
reasons.
The boiler draws combustion air from the outside via a concentric
coaxial pipe on the external wall and expels flue gas to the outside
through the external wall. For a detailed description, see page 21.
Horizontal roof outlet
(Type C
13x
, to CEN/TR 1749)
No limit for rated heating output.
The boiler draws combustion air from the outside via a concentric
coaxial pipe in the dormer and expels flue gas to the outside through
the dormer.
A
Flue gas
B
Ventilation air
Routing over external walls
(Type C
53x
, to CEN/TR 1749)
The boiler draws combustion air from the outside via a horizontal,
concentric coaxial pipe on the external wall and expels flue gas to
the outside above the roof.
In its vertical section, the external pipe of the concentric coaxial pipe
acts as thermal insulation thanks to its static air gap. The combus-
tion air is supplied via the balanced flue air inlet piece.
For a detailed description, see page 25.
Flue systems
(cont.)
8
VIESMANN
VITODENS, VITOSOLAR
1
5414641

Viessmann WB1A007 Specifications

General

Brand	Viessmann
Model	WB1A007
Category	Boiler
Language	English