Siting Conditions For Room Sealed Operation (Appliance Type C) - Viessmann Vitodens 300-W Technical Manual

Design information

Siting conditions for room sealed operation (appliance type C)

Type C , C , C , C , C , C
13x 33x 43x 53x 63x
The Vitodens can be installed for room sealed operation independ-
ent of the size and ventilation of the installation room.
Installation room
Suitable siting locations include:
■ Recreational rooms and other living spaces
■ Adjacent rooms without their own ventilation
■ Cupboards (open at the top)
■ Recesses without compulsory clearance towards combustible
materials
■ Attic rooms (pitched attics and long panes) where the balanced
flue pipe can be routed directly through the roof
The installation room must be safe from the risk of frost.
Provide a condensate drain and a discharge pipe for the safety valve
in the installation room.
Electrical interlocks for extractors (extractor hoods, etc.) are not
required with room sealed operation.
Connection on the flue gas side
The flue pipe should be designed as short and straight as possible.
If bends are unavoidable, do not install them directly one after
another. The entire flue gas path must be able to be checked and
cleaned as required.
Since the flue pipe connection for room sealed operation is surroun-
ded by combustion air (coaxial pipe), no clearances towards com-
bustible materials need be maintained.
Ventilation air ducts with which oil or solid fuel boilers were previ-
ously used must not contain any sulphur or soot deposits on the
inner surfaces.
Sulphur and soot deposits cause faults.
If thorough cleaning is not possible, a balanced flue pipe must be
laid through the shaft. Alternatively, a separate balanced flue can be
routed.
Operation of the Vitodens in wet rooms
■ Room sealed operation:
The Vitodens is approved for installation in wet rooms (IP rating:
IP X4, splashproof).
The boiler may be installed in safety zone 1 if hosed water (e.g.
from massage showers) is prevented.
■ Open flue operation:
The boiler may only be installed in safety zone 1 or 2 if additional
splash protection (part no. 7590109) is fitted.
When installing the Vitodens in wet rooms, observe the safety zones
and minimum wall clearances according to VDE 0100 [or local regu-
lations] (see also "Electrical safety zone").
VITODENS
(cont.)
or C according to TRGI 2008
83x 93x
Viessmann accepts no liability for damages caused by a failure to
observe these stipulations.
Close off and seal any other connection apertures with appropriate
materials.
This does not apply to any cleaning or inspection apertures that are
provided with chimney cleaning covers and that are identified with an
appropriate test mark.
For further details, see the technical guide on flue systems for the
Vitodens.
Using third party flue systems
Every approved flue system can be used for type C
systems have not been tested with the boilers and have no system
certification to EC Gas Appliances Directive 2009/142/EC. Always
observe the Viessmann specifications regarding installation condi-
tions and sizing (diameter, max. flue lengths).
Installation in a garage
Tests carried out by the Gaswärme-Institut e.V., Essen, have con-
firmed that the Vitodens is suitable for installation in garages.
When installing this boiler in a garage, maintain a clearance between
the floor and the burner of at least 500 mm. Install a frame or deflec-
tor (provided on site) to protect the boiler against mechanical dam-
age.
Safety equipment for the installation room
Viessmann heat generators are tested and approved in accordance
with all safety regulations and are therefore fail-safe. Unpredictable,
external factors may, in the rarest of cases, lead to the potentially
harmful escape of carbon monoxide (CO). For this case, we recom-
mend using a CO limiter. This can be ordered as a separate acces-
sory.
Electrical safety zone
e a
A r
2
A r
Electrical equipment in rooms containing a bathtub or a shower must
be installed in such a way that users cannot be exposed to danger-
ous body currents. VDE 0100 specifies that cables supplying perma-
nently installed consumers in zones 1 and 2 should only be run verti-
cally and routed into the equipment from the back.
. These flue
63x
6 0
0
A r
e a
1
e a
0
Area 2
VIESMANN
6
57