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
3/22
CAUTION
The product should be stored and used in rooms where:
• there is no access to dust, gases, caustic vapors and other aggressive chemical
vapors that can destroy the insulating elements and structural elements;
• the flaps are not affected by direct sunlight and UV radiation;
• the maximum relative humidity does not exceed 80% at the temperature of +20 ºC;
• the ambient temperature is between - 20 ºC and + 40 ºC;
• there are no vibrations.
In the case of cut-off and transfer fire dampers, the device is equipped with a thermal release containing
one-time temperature fuses. During normal operation, the above mentioned element should be protected
against the affect of the permissible temperature Tmax (see the table below). When it is exceeded, the
temperature fuses may operate, which is a normal operation and is not covered by the guarantee or
warranty.
A thermal release for a damper equipped with an electric actuator:
Thermal fuse for temperature
72 ºC
95 ºC
Temperature fuse inside the duct
Tmax 40 ºC
Tmax 60 ºC
Outdoor temperature fuse
Tmax 40 ºC
Tmax 40 ºC
A thermal release for a damper equipped with KW1 or RST mechanism:
Thermal fuse for temperature
72 ºC
95 ºC
Temperature fuse inside the duct
Tmax 40 ºC
Tmax 60 ºC
