7
Danger
The simultaneous operation of open flue com-
bustion equipment (e.g. an open fireplace) and
the Vitovent in a space with combustion air inter-
connection results in dangerous negative pres-
sure in the interior. Negative pressure can result
in flue gas re-entering the room.
In order to prevent health risks, observe the fol-
lowing:
■
Never
operate the Vitovent simultaneously with
open
flue combustion equipment (e.g. open fire-
place).
■
Only operate combustion equipment in
room sealed
mode with a separate combustion air supply. We rec-
ommend combustion equipment that has general
building approval as
room sealed
combustion equip-
ment of the Deutsches Institut für Bautechnik (DIBt)
[Germany].
■
Keep doors to boiler rooms that are not part of the
combustion air interconnection with the living space
airtight and shut.
Information regarding the operation of the Vitovent
in conjunction with open flue combustion equip-
ment
■
On-site safety equipment
must
be installed that will
switch off the ventilation unit when there is negative
pressure inside the room.
■
The relevant flue gas inspector
must
give his/her
approval [check local regulations].
■
Frost protection for the countercurrent heat
exchanger is ensured by means of the integral pre-
heater coil. For operation with even lower outside
temperatures, provide an additional external electric
preheater coil (accessories) or a geothermal heat
exchanger (on site) in the outdoor air duct.
!
Please note
The simultaneous operation of extractor hoods
or extracting tumble dryers and the Vitovent in
rooms with an interconnected air supply results
in negative pressure inside the room.
■
Never
link extractor hoods or extracting tum-
ble dryers into the Vitovent ductwork.
■
Set up kitchen extractor hoods as recirculating
extractors, which is more energy efficient.
We recommend the mechanical ventilation system
is checked for the following characteristics:
■
Clear cross-section of outdoor air intake and exhaust
air discharge.
■
Sizing and routing of ducts according to design.
■
Correct appliance siting and fitting of ducts, silenc-
ers, air distribution boxes, supply and extract air
vents.
■
Correct condensate draining, correct thermal insula-
tion of ducts in cold areas.
Note
The ductwork may be cleaned via the supply air and
extract air vents.
Starting the ventilation unit
!
Please note
Dust entering the ventilation unit and the duct-
work can result in faulty operation of the
mechanical ventilation system.
Only start the ventilation unit after all other con-
struction work inside the building has been com-
pleted.
!
Please note
Operating the ventilation unit with closed supply
air and extract air vents will result in damage to
the appliance.
If supply air and extract air vents were sealed off
with adhesive foil during construction work,
remove such foil completely
prior
to starting the
ventilation unit.
Insert the mains plug of the ventilation unit into a
standard socket with separate fuse/MCB protection
(230 V/50 Hz).
Commissioning, inspection, maintenance
Checking the mechanical ventilation system
5793 605 GB
