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1. INITIAL DAMPER TEST - Before installing damper into slab, check damper's closing operation. This can be achieved by placing damper into its installation position. Hold blade clips down to release blades, and open them to the fully open position. Release blades and let them drop to the closed position.

2. Ensure slab penetration is correct size. Opening should be 26mm larger than normal size in both width and height. Refer AS1682.2-1990 Appendix 'C'.

3. Remove flange screws/bolts and detach flanges from damper casing.

4. Slide damper with metal seal into penetration. Apply a bead of fire rated mastic to slab where flanges meet concrete slab.

5. Replace flanges making sure damper is fixed firmly within the slab NOTE: do not overtighen flange screws/bolts.

6. Repeat INITIAL DAMPER TEST as described in point #1. Should all operations be alright, release the blades from retaining clips and attach blades to rated fusible link supplied.

7. Connect ductwork to fire damper using fire rated mastic to fill recess if using raw edge connection, or apply mastic to both surfaces of the TDF flange connections. (Bolts must be of a low melting point material.)