Greenheck DFD Series User Manual

• Retaining Angle Attachment to Wall/Floor:
Two-Sided Angle Method: For two-sided angle
installations the retaining angles shall not be attached to
the wall/floor (see Figure 7).
Single Sided Angle Method: For single side installations
the retaining angles must be attached to the wall/floor (see
Figures 8-11). For metal stud partitions only, the single
side mounting angle may be directly attached to the metal
stud prior to the installation of the drywall.
• Retaining angles must be attached to the partition
using one of the methods shown below:
- Drywall screws of a length such that the
screw engages the steel stud/track by ½ in.
(13mm) (steel framing).
- Drywall screws of a length such that the screw engages the wood stud by 1¾ in. (44mm) (wood
framing).
- Steel anchors or self tapping concrete screws penetrating masonry or block 1¼ in. (31mm).
• A minimum of two connections per side are required. Additional connections made at a maximum of
12 in. (305mm) O.C. for openings of 48 in. W x 36 in. H (1219mm x 914mm) and less. Dampers greater
than 48 in. wide (1219mm) or 36 in. high (914mm) require the connections to be no more than 6 in.
(152mm) O.C.
Securing the Damper/Sleeve Assembly to Wall/Floor Openings cont....
Retaining
Angle
Wall or Floor
Min. 1 in.
overlay*
Duct
Sleeve
Retaining
angle
Damper
2 in. Max.
2 in. Max.
6 in. Max.
6 in. Max.
Figure 7: Two-Sided Angle Installation
Damper
Sleeve
Angle Fastener
Stud or Runner
Two layers of 1/2 in. UL
Classified Gypsum
Wallboard for 2 hour
rated walls. One layer
for 1 hour rated walls
(see UL Rated Wall
Design for Additional
Details).
Figure 8: Single Side Angle With Steel Stud Wall - Angle
Over Wallboard
Damper
Sleeve
Metal Stud
or Runner
Two layers of 1/2 in. UL
Classified Gypsum
Wallboard for 2 hour
rated walls. One layer
for 1 hour rated walls
(see UL Rated Wall
Design for Additional
Details).
Figure 10: Single Side Angle With Steel Stud Wall -
Angle Under Wallboard
Stud or Runner
Damper
Sleeve
Angle Fastener
Two layers of 1/2 in. UL
Classified Gypsum
Wallboard for 2 hour
rated walls. One layer
for 1 hour rated walls
(see UL Rated Wall
Design for Additional
Details).
Figure 9: Single Side Angle With Wood Stud Wall
Masonry or
Concrete
Wall
Damper
Sleeve
Angle Fastener
Masonry or
Concrete
Floor
Damper
Sleeve
Angle Fastener
Top Side
Figure 11: Single Side Angle With Masonry or
Concrete Wall and Floor
7
Curtain Fire Dampers

Greenheck DFD Series Specifications

General

Brand	Greenheck
Model	DFD Series
Category	Fire and Smoke Dampers
Language	English