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1. INITIAL DAMPER TEST - Before installing Damper into wall, check damper's closing operation. This can be achieved by placing damper in the upright position. Hold blade stack whilst removing UL33 rated fusible link. Let the curtain blade stack fall. Gather blades up and return fusible link to its original position.

2. Ensure that wall penetration is correct size. Opening should be 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. Wrap damper with suitable insulation and slide into wall penetration. NOTE: Dampers are clearly labelled with "AIRFLOW" direction and "UP" of unit.

5. Pack suitable insulation in any space between damper casing and penetration. Refer AS1682.2-1990 Clause 5-6.

6. Replace flanges making sure damper is fixed firmly within the wall. NOTE: DO not overtighten flange screws/bolts.

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

8. 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.)