Viessmann H32E, Инструкция по установке и обслуживанию, Страница: 12 / 80

12
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"
Protecting the mechanical ventilation system
!
Please note
Dust entering the ventilation unit and the duct-
work can result in faulty operation of the
mechanical ventilation system.
Prevent the ingress of dust whilst building work
is in progress by the following measures:
■ Following the installation, close all supply air
and extract air apertures, for example with
self-adhesive film.
■ Only start the ventilation unit after all other
construction work inside the building has been
completed.
■ You can expect an increase in dust during the
construction phase. Filters therefore already
need to be checked after 3 to 4 weeks.
Preparing for installation
Extractor hoods, extracting tumble dryers and…
(cont.)
5831646
Installation