Dhw Cylinder 3.1 Product Description - Viessmann VITODENS 200-W Type B2HA Technical Manual

DHW cylinder
3.1 Product description
For details regarding DHW cylinders, see the technical guide to the
Vitodens up to 35 kW, or separate datasheets.
Design information
4.1 Siting, installation
Siting conditions for open flue operation (appliance type B)
(Type B and B )
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In rooms where air contamination from halogenated hydrocar-
bons may occur, such as hairdressing salons, printing shops, chemi-
cal cleaners, laboratories, etc., operate the Vitodens only as a room
sealed system.
If in doubt, please contact us.
Wall mounted boilers should not be installed in areas subject to very
dusty conditions.
The installation location must be kept free from frost and must be
adequately ventilated.
Provide a condensate drain and a discharge pipe for the safety valve
in the installation room.
The maximum ambient temperature of the system should not exceed
35 °C.
If these instructions are not observed, any consequential appliance
damage directly related to any of these causes is excluded from our
warranty.
AT: When installing in Austria, observe all current safety regulations
as defined by ÖVGW-TR Gas (G1), ÖNORM, ÖVGW, ÖVE and
locally applicable standards.
Vitodens 200-W from 60 kW and multi boiler systems
Install boilers from 50 kW in accordance with the German Combus-
tion Order (FeuVo) [check local regulations] in a separate installation
room. Fit the mains isolator outside the installation room.
Combustion air apertures
Gas equipment with a total rated heating output in excess of 50 kW
must be provided with combustion air apertures leading to the out-
side. The cross-section should be at least 150 cm
2 cm 2 larger for each kW above 50 kW rated heating output. This
cross-section may not be split over more than 2 vents (observe
FeuVo and TRGI 2008 point 5.5.4 [check local fire regulations]).
Example:
Vitodens 200-W, 3 × 60 kW
Total rated heating output 180 kW
2 2
150 cm + 130 × 2 cm = 410 cm
The combustion air apertures should measure at least 410 cm
2
2 × 205 cm .
Multi boiler systems with flue systems under positive pressure
The Vitodens 200-W multi boiler systems with common flue systems
under positive pressure are designed for open flue operation (type
B).
For further details, see the technical guide on flue systems for the
Vitodens.
Installation room (up to 50 kW)
Permissible:
■ Boiler installation on the same floor
■ Adjacent rooms with interconnected room air supply (larders,
basements, utility rooms, etc.)
■ Attic rooms, but only with adequate minimum chimney height, acc.
to DIN 18160 – 4 m above inlet (negative pressure operation).
VITODENS 200-W
2 and should be
2 2
or 2 × 205 cm .
2
or
Not permissible:
■ Stairwells and communal hallways; exception: Detached and two-
family houses of low height (top edge of floor in the top storey
< 7 m above ground level)
■ Bathrooms and toilets without outside windows with shaft ventila-
tion
■ Rooms where explosive or flammable materials are stored
■ Rooms that are ventilated mechanically or via individual shaft sys-
tems to DIN 18117-1.
Observe all local fire regulations.
Connection on the flue gas side
The connection piece to the chimney should be as short as possible.
Therefore position the Vitodens as close to the chimney as possible.
The flue should be as straight as possible. If diversions are unavoid-
able, do not arrange these one after the other. The entire flue gas
path must be able to be checked and cleaned as required.
No special protective measures or clearances towards combustible
objects, such as furniture, packaging or similar, need to be taken/
observed. The surface temperatures of the Vitodens and the flue
system do not exceed 85 °C at any point.
For further details, see the technical guide on flue systems for the
Vitodens.
Extractors
When installing appliances with extraction to the outside (cooker
hoods, extractor fans, etc.), ensure that air extraction will not create
negative pressure inside the installation room. A return flow of flue
gases could result if the ventilation system and the Vitodens are
operated simultaneously. In such cases, install an interlock circuit.
For this, the internal H2 extension (accessories) can be used. This
switches the extractors off when the burner is started.
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.
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