FSD-TD - Installation Operation and Maintenance Instructions
13.
Dry wall - Frameless Installation Procedure –
Fig. 13
13.1 This is similar to Cleated installation. Refer to section 12 for this recommended
detail. Also, refer to section 5 for wall preparation instructions.
13.2 Depending on wall thickness, it may ease connection of ductwork, if connecting ductwork is attached to
damper prior to fitting pattress around damper.
13.3 Prepare a pair of spacing blocks, (approx. 10mm high x 25mm square) from any available material (such
as drywall boards). Position spacing blocks within the opening at extremities of damper, and stand the
damper on blocks so that damper is central in opening, with blades running horizontally.
13.4 Position and temporarily support damper centrally in wall opening.
13.5 Prepare 16 off pattress pieces from plasterboard of same material as main construction). Plasterboard
pattress should be sufficiently wide to butt up to damper spigots/duct and overlap the outer edge of the
track lining the opening by at least 10mm. They need to be long enough to form neat comers.
13.6 Two layers of pattress are required each side of wall and the corners should
'overlap' between the first and second layers.
13.7 Fit second pattress to other side of wall in similar manner.
13.8 Apply intumescent sealant to the pattress parts and fit snugly up against the spigot.
13.9 It is not a necessity to fill the void between the pattresses, but it can be done for insulation purposes if
desired.
13.10
Important:
Ensure the drywall screws 'pick up' the track lining the hole, so that the proper fire integrity of
the installation will not be compromised.
Fig. 13
Page 14
