Greenheck OFD-XXX - Manuals

Pre-Installation Guidelines The basic intent of a proper installation is to secure the fire or fire smoke damper in, not to, the opening in such a manner as to prevent distortion and disruption of damper operation. This is accomplished by allowing the fire or fire smoke damper in rated separation op...

4 4. SECURING THE DAMPER/SLEEVE ASSEMBLY TO WALL OPENINGS. Damper/sleeve assemblies must be installed in wall openings using flanges and sheet metal screws as illustrated and described below. • Flange on front (grille end) of sleeve must be a minimum of 16 gauge (1.5mm) steel and have a 5 ⁄ 8 in. (1...

5 Breakaway Connections Proprietary Flange System Breakaway Connections (TDC by Lockformer, TDF by Engle)TDC and TDF systems are approved as breakaway connections when installed as described in the TDC or TDF addendum to the SMACNA Duct Construction Standards except the corners may not be bolted. St...