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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
9.10
Filling gaps around the wall box with foam
NOTE
►
Check that the wall box is seated correctly.
Once you have used the foam, you will not
be able to align the wall box further.
►
Fill the gaps between the wall box and wall
breakthrough all around and continuously
with expanding foam (item 1 in Fig. 18) or
using another suitable filling material.
►
Once the foam has hardened, remove any
wedges that extend beyond the solid wall.
9.11
Inserting flat ductwork into channels
►
Join individual elements of the flat ductwork
to create partial sections and seal every
join with a layer of sealing tape 30 mm wide
(item 1 in Fig. 19).
►
Insert the first section of the flat ductwork
into the 90° bracket on the wall box and seal
the join with sealing tape (item 2 in Fig. 19).
►
Insert the sections of flat ductwork into the
wall channel one after another and seal
every join with sealing tape.
►
Fix the flat ductwork in place with expanding
foam. This will improve both the seal and
the insulation.
Fig. 18:
Filling gaps around the wall box
with foam
Fig. 19: Fixing a flat ductwork connection with
sealing tape
