11
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.
Extractor hoods, extracting tumble dryers and the
Vitovent
!
Please note
The simultaneous operation of extractor hoods
or extracting tumble dryers and the ventilation
unit in interconnected rooms results in negative
pressure inside the room.
Never
link extractor hoods or extracting tumble
dryers into the ventilation unit ductwork.
Set up kitchen extractor hoods as
recirculating
extractors
, which is more energy efficient.
Never connect existing
extractor hoods
to the extract
air duct of the mechanical ventilation system for the
following reasons:
■
Hygiene, contamination:
grease deposits in the extract air system
■
Noise from the supply air valves:
Extractor hoods operate with a substantially greater
air flow rate (> 300 m
3
/h) than the ventilation unit.
The generated negative pressure creates a "short
circuit" inside the system, as the amount of differen-
tial air must be made up by the ventilation ductwork.
Connect extractor hoods via a coaxial exhaust air sys-
tem to enable the differential air volume to be replen-
ished.
Provide an interlock for the extractor when using an
extractor hood in conjunction with open flue combus-
tion equipment: See chapter "Open flue combustion
equipment and Vitovent"
Siting
(cont.)
5793 589 GB
