Design Information 5.1 Positioning, Installation; Installation Conditions For Open Flue Operation (Appliance Type B); Installation Conditions For Balanced Flue Operation (Appliance Type C); Clearance Towards The Fuel Tank - Viessmann VITOLADENS 300-W Technical Manual

Design information
5.1 Positioning, installation

Installation conditions for open flue operation (appliance type B)

The Vitoladens for open flue operation (type B
ated in balanced flue operation in rooms where air contamination
through halogenated hydrocarbons is expected.
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 blow-off line 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.
Combustion air apertures
The cross-section should be at least 150 cm
not be split over more than 2 apertures (observe your local fire regu-
lations).
Installation location
Permissible:
■ Boiler installed on the same floor
■ Living space with interconnected room ventilation
■ Adjacent rooms with interconnected room ventilation (larders, base-
ment, utility rooms, etc.)
■ Adjacent rooms with apertures to the outside (ventilation air/extract
2
air 150 cm or 2 × 75 cm
wall)
Not permissible:
■ Stair wells and common hallways; exception: Detached and two-
family homes of low height (top edge of floor in the top storey <
5 7 m above ground level)
■ Bathrooms and toilets without outside windows with duct ventilation

Installation conditions for balanced flue operation (appliance type C)

The Vitoladens can be installed as equipment type C
C to TRGl 2008, for balanced flue operation independent of the
83x
size and ventilation of the installation room. For example, this boiler
may be installed in living spaces and accommodation, in non-ventila-
ted ancillary rooms, inside cupboards and in recesses, without having
to maintain a minimum clearance towards combustible materials.
We recommend installation in a separate room.
The installation location must be safe from the risk of frost.
Since the flue pipe connecting piece for balanced flue operation is
surrounded by combustion air (coaxial pipe), no clearances towards
combustible parts need to be maintained (for further details, see the
technical guide Flue gas systems; Vitoladens).
Provide a condensate drain and a blow-off line for the safety valve in
the installation room.

Clearance towards the fuel tank

Nowhere on this combustion device will a maximum surface temper-
ature of 40 °C be exceeded.
Consequently, a minimum clearance of 0.1 m between the combustion
equipment and the fuel tank is sufficient.

Electrical connection

The power supply must comply with the requirements of your local
power supply utility and current VDE [or local] regulations.
Protect the power cable with a fuse with a max. rating of 16 A.
We recommend installing an AC/DC-sensitive RCD (RCD class B) for
DC (fault) currents that can occur with energy-efficient equipment.
VIESMANN
40
) must only be oper-
23
2 . This cross-section may
2
each at the top and bottom of the same
, C , C
33x 53x
■ Rooms where explosive or flammable materials are stored
■ Rooms that are ventilated mechanically or via individual duct sys-
tems to DIN 18017-1.
Observe all local fire regulations.
Vitoladens in wet areas
The Vitoladens is not approved for installation in wet areas (e.g. bath
or shower rooms) (protection IP 20).
Connection on the flue gas side
(for further details, see the technical guide Flue gas systems, Vitola-
dens)
The connecting piece to the chimney should be as short as possible.
Therefore position the Vitoladens as closely to the chimney as possi-
ble.
No special protective measures and clearances towards combustible
objects, e.g. furniture, cartons or similar, need to be taken/observed.
Nowhere on the Vitoladens or its flue does the surface temperature
exceed 85 ºC.
Extractors
When installing devices with extraction to the outside (cooker hoods,
extractors, 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 Vitoladens are operated simul-
taneously. In such cases, install an interlocking circuit.
For this, the external extension H3 (accessory) can be used. This
switches the extractors OFF when the burner is started.
or Electrical interlocks for extractors (extractor hoods, etc.) are not
63x
required with balanced flue operation.
Vitoladens in wet areas
The Vitoladens is not approved for installation in wet areas (e.g. bath
or shower rooms) (protection IP 20).
Installation in a garage
When installing this boiler in garages, maintain a clearance between
the floor and the burner of at least 500 mm.
Secure the boiler on site with a bracket or deflector against mechanical
damage.
Connect the power supply (230 V/50 Hz) via a permanent connec-
tion.
The supply cables and accessories are connected at the terminal strips
inside the boiler.
VITOLADENS 300-W/VITOLADENS 333-F