Installation manual
M-WRG-II M-U
2
- 29 -
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 A T I O N & H E A T R E C O V E R Y
8.8
Fixing the wall box
► Fix the wall box (item 1 in Fig. 24)
in position in the wall breakthrough
using wedges or air cushions (item 2
in Fig. 24) on both the inside and the
outside.
► Use the spirit level (item 3 in Fig. 24)
to align the wall box so that it is
perpendicular and flush with the wall.
NOTICE
►
Make sure that the wall box is
perpendicular as this is the only
way to ensure that any condensa-
tion will be carried outside by the 2°
pipe fall.
► Fix the filler piece, if needed, to the
external wall with wedges or air
cushions.
NOTICE
The plastering trim is 15 mm deep
(see Fig. 25).
►
If the depth of plaster should be more
than 15 mm, position the wall box so
that it protrudes sufficiently out of the
solid wall. If you do not do this, there
is a risk that the ventilation unit will
not work correctly.
►
If the interior wall is not perpendicular
or flat, align the front surface of the
plastering trim (item 1 in Fig. 25) parallel to a plaster stop bead running vertically.
Fig. 24: Fixing the wall box
1
2
3
Fig. 25: Depth of plastering trim 15 mm
15 mm
1
