Note When Walling/Insulating; Note When Plastering - Maico Rv 2 Vh Montageanleitung

11 Installation instructions and tips
3. Install the mounting sleeve as described in the
following chapters.
4. Insert the empty duct(s) lightly into the mount-
ing sleeve.
5. Feed the connection cable into the mounting
sleeve by the sufficient length.
Difficult line feedthrough with external wall
connection, as 90° elbow directly after prede-
termined breaking point. Carefully feed in the
cable.
6. Seal the empty duct(s)/connection duct with
PU adhesive foam towards the mounting
sleeve.
Placement of flush-mounted boxes
Networks with star, line and ring topology
permitted. Carry out wiring in flush-mounted
box.
When using more than 2 ventilation units, we re-
commend installing the room air control in a deep
electronic switch box, to be provided by the cus-
tomer. This provides sufficient space for connec-
tion 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.

11.5 Note when walling/insulating

The mounting sleeve is set in PU adhesive foam
or thin-bed mortar.
• Moisten the installation substrate. Follow the
adhesive manufacturer's recommendations for
use.
• Align the mounting sleeve horizontally, flush
with the exterior wall and secure it against the
pressure of the swelling PU foam.
• Align, support and weigh down the mounting
sleeve with suitable chocks to prevent settle-
ment during the curing of the PU foam.
• Wait for the adhesive to dry/set according to the
manufacturer's instructions.
• Leave a gap of 10 mm to the right and left
between the bricks and the mounting sleeve.
This simplifies the bonding/foaming process.
Shorten the bricks if necessary.
• Then brick up the masonry layer to the height of
the mounting sleeve.
• Fill the gap between the masonry and the
mounting sleeve and the grooves on the side
surfaces completely with weakly expanding PU
adhesive foam.
• To compensate for brick tolerances, smaller
projections of up to 15 mm can be bridged on
the inside of the wall with the internal plaster
frame. Alternatively, smaller projecting lengths
can be corrected on the outside with the ex-
ternal cover or on the inside by levelling the
cover frame.
ATTENTION Damage to the building/unit if the
condensate drain is contaminated. Any con-
densate is discharged into the external cover via
a condensate drain integrated into the mounting
sleeve and drained off via a drip rail. Ensure that
the condensate drain is not soiled during and
after installation. Condensate drainage must be
ensured at all times.
ATTENTION: Do not install the soffit element in
combination with 100 mm thick façade thermal in-
sulation.

11.6 Note when plastering

ATTENTION: Transition between masonry and
mounting sleeve must be made with reinforce-
ment fabric in order to avoid cracks due to the
change in material to the neighbouring masonry.
In addition to the reinforcement fabric, an adhes-
ive plaster levelling coat must be applied. In prin-
ciple, the execution and quality of the plastering
work is the responsibility of the plastering con-
tractor carrying out the work. This must corres-
pond to the current state of the art and the recog-
nised 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).
• When plastering the plaster frame, ensure that
the tabs protrude under the plaster.
• Leave the plaster protection in the plaster frame
to avoid soiling the inside of the mounting
sleeve.
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