mcr FID B
single-plane fire dampers
“MERCOR” SA
– The company reserves the right to modify and change the document. Version FID B 21.07.30.02
8/22
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Preparation of the installation opening
6.3. EMBEDDING / FIXING THE DAMPER
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1. Damper mcr FID B BxH
2. Wooden blocks
Protecting the damper against buckling
The mcr FID B fire damper will work properly if the isolation partition rotation axis is horizontal. If the case of fire
damper must have vertical verical axial, state this when ordering. The trigger control gear may be located on the right
or on the left hand side of the damper at any direction of air flow.
The dampers can be installed on the vertical or horizontal section of the fire ventilation duct across the duct or on the
surface of the sides of the duct. The damper can also be installed in a construction shaft used for fire ventilation.
Acceptable assembly is shown in the figures further in the document.
Before embedding/fixing, place the damper in the fire ventilation duct or consruction shaft used for fire ventilation,
please the damper axially in the previous prepared opening. Level the device and secure in place. Next, actuate the
damper isolation partition by hand to verify that the rotation is correct (i.e. there is no collision with the damper casing
parts, etc.). Close the damper isolation partition.
Install the bracing as shown in the figure. Carefully fill the gap
between the damper casing and the duct with a proper mortar formula that ensures proper duct and damper fire
resistance, and do not let the mortar get into the damper actuation components (i.e. the trigger control gear, the
isolation partition, gaskets and stops). To do this, the fire damper must be covered with plastic film or other suitable
material and remain so until the embedding and finishing is done. The damper must remain closed until the mortar
has cured. Once the mortar has cured, remove the temporary supports and open and close the fire damper to verify
its performance.
The embedded fire damper must be coaxially connected to the ventilation duct. Protect the fire damper casing from
damage, and specifically from straining the casing during the installation process. The fire damper cannot bear the
load of the ventilation duct or the ventilation system in which it is installed. Drilling the damper enclosure or driving
screws, bolts or other elements that pierce through the casing to the inside of the damper is prohibited.
A mounting
frame RB is used to connect a steel ventilation duct. Once connected to the ventilation ducts, re-verify the fire damper
performance. With the installation finished, carefully clean the fire damper and make sure that there is no debris
which could influence proper performance of the device.
CAUTION
