Installation manual
M-WRG-II M-U
2
- 30 -
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
8.9
Filling gaps around the wall box with foam
NOTICE
►
Check that the protective cover
(item 1 in Fig. 22 on page 28) is
inserted before filling with foam.
►
Check that the wall box is seated
correctly. Once you have used the
foam, you will not be able to align it
further.
►
Fill the gaps between the wall box
and wall breakthrough all around and
continuously with expanding foam
(item 1 in Fig. 26) or using another
suitable filling material.
Be careful not to block the extract air
and supply air openings at the top of the wall box with the expanding foam.
►
Once the foam has hardened, remove any wedges that extend beyond the solid wall.
8.10
Inserting flat ductwork into channels
NOTICE
If you are using flexible pipes, continue from section “8.11 Cutting flexible pipes to
► Insert a fitting, e.g. the flat
ductwork connector M-WRG-FK-V,
part no. 5591 (item 1 in Fig. 27), into
the opening in the wall box.
NOTICE
All fittings (flat ductwork connectors,
bends, angles, etc.) inserted into the
opening in the wall box must have the
external dimensions 115 x 58 mm.
Elements with the external dimen-
sions 110 x 54 mm, e.g. flat ductwork,
are designed to be inserted into the
fittings. They must not be inserted
directly into the opening in the wall
box.
► Join individual elements of the flat ductwork to create partial sections and seal every
join with a layer of sealing tape 30 mm wide.
► Insert the first section of the flat ductwork into the fitting, e.g. the flat ductwork
connector M-WRG-FK-V, part no. 5591, on the wall box and seal the join with sealing
tape (item 2 in Fig. 27).
Fig. 26: Filling gaps around the wall box with foam
1
Fig. 27: Fixing ductwork connections with sealing tape
1
2