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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
V E N T I L AT I O N & H E AT R E C O V E R Y
9.14
Aligning the wall box on the outside before plastering
►
Fill the gaps between the wall box and wall
breakthrough all around and continuously
with expanding foam or using another suita-
ble filling material.
—
If the solid wall is
less than
36.5 cm thick:
►
Use a Styrofoam saw to cut off the
excess wall box (item 1 in Fig. 22 and
Fig. 23) and filler piece, if necessary
(item 2 in Fig. 23), so that they are
flush with the solid wall or any insula
-
tion.
NOTE
The wall box fixes the ventilation pipes with
a 2° fall.
►
If the unplastered wall is thin (24 cm or
less), do not cut off the wall box flush
with the unplastered wall. Allow the
wall box to protrude in the vicinity of
the external thermal insulation com-
posite system (ETICS) as this is the
only way to allow the ventilation pipes
to pass far enough through the wall
box and so be fixed in place.
► When fitting the ETICS, make sure
that the ventilation pipes maintain their
2° fall.
—
If the solid wall is
more than
36.5 cm thick:
►
Compensate for thicker walls with
continuous pipes. For walls that
are 60 cm thick or more, you will need 100 cm long outdoor and exhaust air pipes
(M-WRG-LR 100, part no. 5580).
NOTE
The pipes must be continuous. Pipes that have been joined must not be used as there is a risk of
allowing condensation to penetrate the masonry.
Fig. 22:
Aligning the wall box
without
filler piece
Fig. 23:
Aligning the wall box
with
filler piece
