Product Description - Viessmann VITODENS 200-W 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 Positioning, installation
Siting conditions for open flue operation (appliance type B)
(Type B and B )
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In rooms where air contamination through halogenated hydrocar-
bons can occur, such as hairdressing salons, printing shops, dry
cleaners, laboratories, etc., install the Vitodens only as a balanced flue
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 ade-
quately 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 ºC.
If these instructions are not observed, any consequential loss directly
related to any of these causes is excluded from our warranty.
a 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 Combustion Order
(FeuVo) [Germany] [or 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 outside.
The cross-section should be at least 150 cm
larger for each kW above 50 kW rated heating output. This cross-sec-
tion may not be split over more than 2 apertures (observe FeuVo and
TRGI 2008 point 5.5.4 [or local regulations]).
Example:
Vitodens 200-W, 3 × 60 kW
Total rated heating output 180 kW
150 cm 2 + 130 × 2 cm 2 = 410 cm
The combustion air apertures should be at least 410 cm
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 conditions for balanced flue operation (appliance type C)
The Vitodens can be installed as appliance type C
C or C to TRGl 2008, for balanced flue operation independent
63x 83x
of the size and ventilation of the installation room.
VITODENS 200-W
2
and should be 2 cm
2 or 2 × 205 cm 2 .
2
or 2 ×
, C , C , C
13x 33x 43x
Installation room (up to 50 kW)
Permissible:
■ Boiler installation on the same floor
■ Adjacent rooms with interconnected room air supply (larders, base-
ments, utility rooms, etc.)
■ Attic rooms, but only with adequate minimum chimney height to DIN
18160 – 4 m above inlet (negative pressure operation).
Not permissible:
■ Stair wells and common 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 ventilation
■ Rooms where explosive or flammable materials are stored
■ Rooms ventilated mechanically or via individual shaft systems to DIN
18117-1.
Observe all local fire regulations.
Connection on the flue gas side
(For further details, see the technical guide "Flue systems for the
Vitodens")
The connection piece to the chimney should be as short as possible.
Therefore position the Vitodens as close to the chimney as possible.
No special protective measures or clearances towards combustible
objects, e.g. furniture, cartons or similar, need to be taken/observed.
The surface temperatures of the Vitodens and the flue system never
exceed 85 ºC anywhere.
2
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 were to
operate simultaneously. In such cases, install an interlock circuit.
For this, the internal extension H2 (accessory) can be used. This
switches the extractors off when the burner is started.
Safety equipment for the installation room
Viessmann boilers are tested and approved in accordance with all
safety specifications, and are therefore fail-safe. Unforeseeable exter-
nal influences may very occasionally lead to harmful carbon monoxide
(CO) escaping. In this instance, we recommend using a CO limiter.
This can be ordered as a separate accessory (part no. 7499 330).
, It may, for example, be installed in recreation rooms, in other living
53x
spaces, in ancillary rooms without ventilation, in cupboards (open at
the top) and recesses without maintaining minimum clearances to
combustible parts as well as in attic rooms (pitched attics and long
panes) where the balanced flue pipe can be directly routed through the
roof. Since the flue pipe connection for balanced flue operation is sur-
rounded by combustion air (coaxial pipe), no clearances towards com-
bustible parts need to be maintained (for further details, see the tech-
nical guide "Flue systems for the Vitodens").
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VIESMANN
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