- 29 -
Installation manual
M-WRG-II M
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
NOTICE
►
Note the following points when you insert the wall box between the two battens:
—
When it is subsequently installed, the ventilation unit (item 6 in Fig. 21, item 1 in
Fig. 22) must be pushed into the wall box (item 3 in Fig. 21, item 2 in Fig. 22) as
far as it will go. This is the only way to ensure that condensation cannot develop
between the back panel of the ventilation unit and the wall box.
— When the ventilation unit is pushed into the wall box as far as it will go, there
remains a 15 mm gap (item 5 in Fig. 21, item 3 in Fig. 22) between the front sur
-
face of the wall box and the inserted ventilation unit. This gap is ideally filled by
the top layer of the internal wall cladding.
—
If the top layer of the internal wall cladding (item 2 in Fig. 21, item 4 in Fig. 22)
is less than 15 mm thick, the 15 mm gap (item 5 in Fig. 21, item 3 in Fig. 22)
between the front surface of the wall box and the inserted ventilation unit is not
completely filled, resulting in a shadow joint (item 6 in Fig. 22). This can be grout
-
ed.
—
If the top layer of the internal wall cladding (item 2 in Fig. 21, item 4 in Fig. 22) is
more than 15 mm thick, the wall box must be shortened and moved forward by
the amount in excess of 15 mm in order to enlarge the gap between the ventila-
tion unit and wall box. Alternatively the final layer of the internal wall cladding can
be chased out by the amount in excess of 15 mm.
— Make sure that the wall box is perpendicular as this is the only way to ensure
that any condensation will be carried outside by the 2° pipe fall.
12
,5
15
C
10
0
16
0
15
15
15
12
,5
31
7,
5
A- A
C
290 M-WRG-II
M
(shortened)
Gap between the
installation kit and
M-WRG-II ventilation unit
1
2
3
4
6
Fig. 22: Positioning the installation kit in the external wall, dimensions in millimetres
