mcr PL1
overpressure-bleed damper
MERCOR SA –
The Company reserves the right to make modifications and changes.
7/9
6.3. EMBEDDING ____________________________________________________________
Before embedding, the damper should be placed in the partition (wall), in an opening prepared
beforehand, or outside the partition in a mounted support structure. After that, the damper should be
levelled and fixed. Blades of the damper have to be set horizontally. The damper has to be mounted
according to the instructions on the label. Then install the strutting elements and fix the device using
masonry mortar, carefully preventing the mortar, glue and paint from getting onto the operating elements
of the damper (baffles, limiters and gaskets).
For this purpose, carefully protect the damper with protective film or other covering material before
installation, until the masonry and finishing work is completed. After the concrete mortar sets, remove the
brackets and open individual blades of the damper manually to check if they operate correctly.
Connection of the embedded damper to the ventilation duct must be executed coaxially. During
installation of the damper in the partition, a damage of the damper body, and in particular any stresses in
the body, must not be allowed. The damper must not constitute a ‘supporting element’ of the ventilation
system or duct on which it is installed. It is not allowed to drill through the damper casing, drive in bolts,
screws or other elements passing through the casing to the inside of the damper, as such elements may
block the rotations of the baffle and damage damper elements. After connecting the ventilation duct,
check again if the damper operation is correct.
Example of installation in concrete and brickwork walls
