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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 bottom Flanges and slide damper down into slab penetration. NOTE: All dampers are clearly labelled with "TOP" and "AIRFLOW DIRECTION" orientation labels, these must be adhered to.

4. From underneath side of slab reattach bottom flanges sealing between flanges and slab as shown on diagram with an approved fire rated mastic. NOTE: When reattaching flanges, do not overtighten flange screw/bolts.

5. From top of damper, remove the 2x opposing side flanges and pack the expansion gap completely with an approved high temperature ceramic fibre insulation. Replace flanges, sealing between the flanges and slab with an approved fire rated mastic.

6. Now that the damper is securely fixed and sealed within the slab 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.)