Design Information 6.1 Positioning, Installation; Installation Conditions For Open Flue Operation (Appliance Type B); Installation Conditions For Balanced Flue Operation (Appliance Type C) - Viessmann VITODENS 242-F Technical Manual

Installation accessories
■ For the installation of the Vitodens on unfinished floors
■ Adjustable height, for screed floors from 10 to 18 cm
■ With spacer (for downward connection) for installation on finished
walls
Design information
6.1 Positioning, installation

Installation conditions for open flue operation (appliance type B)

(Type B and B )
23 33
In rooms where air contamination through halogenated hydrocar-
bons can occur, such as hairdressing salons, printing shops, chemical
cleaners, laboratories, etc., install the Vitodens only as balanced flue
system.
If in doubt, please contact us.
The Vitodens 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.
a Bei der Montage in Österreich sind die einschlägigen Sicher-
heitsbestimmungen der ÖVGW-TR Gas (G1), ÖNORM, ÖVGW,
ÖVE und der landesrechtlichen Bestimmungen einzuhalten.
Installation room
Permissible:
■ Boiler installation 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 2
air 150 cm or 2 × 75 cm each at the top and bottom of the same
wall)
■ Attic rooms, but only with adequate minimum chimney height to DIN
18160 – 4 m above inlet (negative pressure operation).

Installation conditions for balanced flue operation (appliance type C)

The Vitodens can be installed as appliance type C
or C to TRGl 2008, for balanced flue operation independent of the
63x
size and ventilation of the installation room.
VITODENS
(cont.)
Transport aid
Part no. 7425 341
To make transportation of the boiler easier.
Small softening system for heating water
For filling heating circuits.
See Vitoset pricelist.
Plate heat exchanger flushing system
Part no. 7373 005
For cleaning the plate heat exchanger.
Not permissible:
■ Stair wells and common hallways; exception: Detached and two-
■ Bathrooms and toilets without outside windows with duct ventilation
■ Rooms where explosive or flammable materials are stored
■ Rooms ventilated mechanically or via individual duct systems to DIN
Observe all local fire regulations.
Connection on the flue gas side
(for further details, see the technical guide "Flue gas systems for the
Vitodens")
The connecting piece to the chimney should be as short as possible.
Therefore position the Vitodens as closely to the chimney as possi-
ble.
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
exceeds 85 ºC anywhere.
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 Vitodens were to operate simul-
taneously. In such cases, install an interlocking circuit (see
page 48).
, C , C , C
13x 33x 43x 53x
family homes of low height (top edge of floor in the top storey <
7 m above ground level)
18117-1.
6
VIESMANN
47