3
6.5
e.g. for 150mm dia. damper, and 12.5mm wall board, cut hole should be 195mm (150+(2x10)+(2x12.5))
6.6
Mark out position and size of required cut size on the wall.
6.7
Using appropriate means, cut the hole in the wall and line opening by adding track and batons (fig 1).
6.8
Check opening size is correct.
6.9
Position damper centrally in opening and fix Installation Plate to wall using drywall screws of sufficient
length to engage with track.
6.10
ALL Ø5mm fixing holes, except the 4off unused corner fixings must be used.
6.11
Install from ONE side. There is no need to fill void or add pattress on non -access side.
6.12
Test unit - (refer to sections 10).
6.13
Complete Installation check list.
(sec’n 14).
7. Block wall and Floor Installation Procedure (refer to figure 3)
7.1
Finished aperture size can be square or circular and 0 to 20mm larger
than the nominal damper diameter. This leaves 10mm nominal gap all
round. For core made apertures, please be aware of the rivet tails on the
back of the installation plate. A shallow provision to be made as
appropriate.
7.2
Preferably, prepare aperture whilst building wall/floor, or cut aperture if
wall/floor already exists.
7.3
Cut size = finished size.
7.4
E.g. for 250 dia. damper, cut hole should be 270mm square or circular
(250+20)
7.5
Mark out the position and size of the required aperture on the wall/floor.
7.6
Using appropriate means, cut the aperture in the wall/floor.
7.7
Position damper centrally in wall/floor aperture depth. Fix Installation Plate
to wall or top face of floor.
7.8
There are a variety of proprietary fixings available. Fixings must be fire rated (stee l, NOT aluminum or
plastic). Check minimum dimension specification between fixing and edge of aperture. BSB recommend
steel anchor type bolts Ø5mm minimum).
7.9
There is a pair of fixing holes at each of the installation plate corners, but only one fixing is r equired per
corner. On larger dampers, there are also mid-span fixing holes that must be used. ALL Ø5mm fixing holes,
except the 4 off unused corner fixings must be used.
7.10
Test Unit. (see section 11)
7.11
Complete Installation check list. (sec’n 14).
Figure 3
