Installation Conditions For Room Sealed Operation (Appliance Type C) - Viessmann VITODENS 111-W Technical Manual

Design information
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 equipment damage
directly related to any of these causes are excluded from our war-
ranty.
a When installing in Austria, observe all current safety regulations
as defined by ÖVGW-TR Gas (G1), ÖNORM, ÖVGW, ÖVE and
locally applicable standards.
Installation location
Permissible:
■ Siting on the same floor
■ Living space with interconnected room air supply
■ Adjacent rooms with interconnected room air supply (larders,
basements, utility rooms etc.)
■ Adjacent rooms with apertures to the outside, up to 35 kW: supply
air/extract air 150 cm 2
the same wall
■ Attic rooms, but only with adequate minimum chimney height to
DIN 18160 – 4 m above inlet (negative pressure operation).
Not permissible:
■ Stairwells and communal hallways. Exception: Single- and two-
family houses of low height: Top edge of top storey floor < 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 duct sys-
tems to DIN 18117-1

Installation conditions for room sealed operation (appliance type C)

Equipment type C , C
13x 33x
TRGI 2008
The Vitodens can be installed for room sealed operation irrespec-
tive of the size and ventilation of the installation room.
Suitable siting locations include:
■ Recreational rooms and other living spaces
■ Ancillary rooms without own ventilation
■ Cupboards (open at the top)
6 ■ 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 area 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 as short and as straight as possible.
If bends cannot be avoided, ensure they are not directly one after
the other. The entire flue gas path must be able to be checked and
cleaned as required.
VIESMANN
38
(cont.)
or 2 x 75 cm 2 each at the top and bottom of
, C , C , C , C or C according to
43x 53x 63x 83x 93x
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 closely to the chimney as possi-
ble.
The flue pipe should be as straight as possible. If bends cannot be
avoided, ensure they are not directly 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 otherwise result if the ventilation system and the
Vitodens are operated simultaneously. In such cases, install an
interlock circuit.
Safety equipment for the installation room
Viessmann heat sources 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 (part no. 7499 330).
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.
For further details, see the technical guide on flue systems for the
Vitodens.
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 garages, 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 sources 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 (part no. 7499 330).
VITODENS