Title: +038=365.009-SS002._03-mcr WIPT Stengespjeld Mercor - Installasjonsmanual.pdf
seals and limiters). For this purpose, it is essential that you put plastic film or other material on the fire damper, which will protect it while masonry and finishing work is being carried out. The partition has to remain closed until the mixture sets. Once it has set, remove the protection and struts. Then, again open and close the fire damper’s partition in order to check if it works correctly. In the case of installation of a fire damper in a wall made of boards, the space between the fire damper housing and the wall should be completely filled with A1 class non-flammable (certified) mineral wool. Its density and thickness should ensure fire-resistance not lower than that of the wall in which the fire damper has been installed. Additionally, the filled space should be sealed with an appropriate mixture or mastic having fire-resistance required