14 Assembly of RV 2 VS (shell)
13.4 Cable laying, empty ducts, flush-
mounted boxes
Guide the empty ducts/connection cables into the
mounting sleeve at one of the predetermined
breaking points.
The predetermined breaking points for the cable
feed are labelled with symbols
ing sleeve.
Networks with star, line and ring topology
permitted. Carry out wiring in flush-mounted
box.
Placement of flush-mounted boxes
When using more than 2 ventilation units, we
recommend installing the room air control in a
deep electronic switch box, to be provided by the
customer. This provides sufficient space for con-
nection of the cables of several unit pairs.
Avoid the following:
• Disbalances, which arise from different lengths
of control cable. Observe installation require-
ments relating to cable lengths and types.
• Incorrect measured values, for example due to
an unsuitable installation location of the control
and external sensors or due to interference
such as direct sunlight.
13.5 Fastening / screwing
• Align the complete installation unit exactly hori-
zontally and flush with the window soffit and
fasten it using the mounting brackets supplied.
• Projecting lengths of up to 15 mm can be cor-
rected on the outside with the external cover
and on the inside with the internal cover frame
panel.
ATTENTION: The RV 2 VS must not be installed
in combination with 100 mm thick façade thermal
insulation.
13.6 Plastering
ATTENTION: Transition between masonry/
thermal insulation and the pre-installation unit
must be made with reinforcement fabric, in or-
der to avoid cracks due to the change in material
to the neighbouring masonry. In addition to the re-
inforcement fabric, an adhesive plaster levelling
coat must be applied. In principle, the execution
and quality of the plastering work is the respons-
ibility of the plastering contractor carrying out the
work. This must correspond to the current state of
the art and the recognised rules of technology.
• Generally, plaster the mounting sleeve with a
bonding bridge and reinforcement fabric.
• Ensure sufficient plaster thickness according to
the applicable rules of technology:
outside min. 20 mm, inside min. 15 mm.
• The plaster frame must not protrude beyond the
finished plastered wall
(ideally flush with the wall).
on the mount-
• Leave the plaster protection in the plaster frame
to avoid soiling the inside of the mounting
sleeve.
• Set corner rails inside and outside. When set-
ting the corner rails, always pay attention to the
height of the plaster frames. The plaster frame
and rail must be aligned.
• Make sure that the plaster does not break off
when removing the plaster protection.
• Observe the dimensions of the internal and ex-
ternal covers. Close minor unevenness with ac-
rylic.
• When plastering do not use adhesive tape
between the plaster frame and the plaster, as
this will cause the plaster to separate from the
plaster frame. When removing the plaster pro-
tection, there is a risk of the plaster breaking off
unintentionally.
14 Assembly of RV 2 VS (shell)
layer to ensure that the 90° deflection unit for
renovation work is securely screwed in place.
14.1 Preparation for installation
scaffolding or ladders. Danger to life due to
serious injuries in the event of a fall. Danger
to persons below the scaffolding/ladder from
falling objects.
Observe the accident prevention regulations for
scaffolding erection and working on scaffolding.
Ensure the stability of ladders and climbing aids.
Ensure that you are standing securely and can-
not lose your balance and that there is no one
under the unit.
ATTENTION: Do not damage the pre-installa-
tion kit during installation or modify it in unau-
thorised places, e.g. by drilling or screwing.
Damaged mounting sleeves / 90° deflection units
can lead to incorrect air flow in the ventilation
channel, malfunctions in the ventilation or water
ingress into the unit or masonry.
Install stable supports within the insulation
DANGER Risk of falling when working on
21