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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 it's installation position. Hold blade stack whilst removing UL33 rated fusible link. Holding the blade stack even with both hands release blades to allow closure. After viewing proper operation gather up blade and replace fusible link to its original position.

2. Ensure slab penetration is correct size. Opening should be 26mm larger than nominal 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 complete with metal seal attached 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 overtighten flange screws/bolts.

6. Repeat INITIAL DAMPER TEST as outlined in point #1.

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