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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. "Bricking-in". Advise builder of damper location and direction of airflow. Damper should be laid on a 3mm to 4mm thick mortar bed to ensure a firm fit within the wall. NOTE: Dampers are clearly labeled with "AIRFLOW" direction and "TOP" of unit.

3. Complete brickwork around and over damper filling gap between brickwork and damper with a thin layer of mortar. NOTE: Lintel beam required above opening.

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

5. 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.)