Breakaway Connections - Greenheck FD 150X Installation, Operation And Maintenance Instructions

Figure 5: Detail of retaining angles and gypsum board application for metal and wooden stud construction.
Duct-Sleeve Connections
traditional Breakaway Style transverse Joints
Transverse joints illustrated in Figure 6 have always been
approved as breakaway connections. SMACNA testing
has also approved the following variations as breakaway
connections.
• T he breakaway connections shown to the right can be
applied with maximum of (2) #10 sheet metal screws
on each side and on the bottom located in the center
of the slip pocket and penetrating both sides of the
slip pocket.
• T ransverse joints illustrated can
be applied as top and bottom
joints with Drive Slip - side
joints in duct heights up to 20 in.
(508mm).
Round and oval Duct Breakaway Connections
Round or flat oval ducts connected to factory supplied
Type R, CR, or CO damper collars may use #10 sheet
metal screws as follows:
• D ucts 22 in. (559mm) wide (or dia.) and smaller may
use 3 screws.
• D ucts larger than 22 in. (559mm) wide (or dia.) may
use 5 screws.
Proprietary Flange System Breakaway Connections
(Ductmate, Ward, Nexus)
Flanged connection systems manufactured by Ductmate,
Ward, and Nexus are approved as breakaway connections
when installed as illustrated in Figure 7.
Figure 6: Traditional breakaway style transverse joints.
NOTE:
All breakaway connections described may have
duct sealant, PA2084T duct sealant adhesive manufactured
by Precision, DP1010 water base duct sealant by Design
Polymetrics, Grey Pookie or Ductmate PROseal ® applied in
accordance with SMACNA recommendations.
6 in. long 1/16 in. max.
thickness plastic cleats;
12 in. c-c (min. 1 per side)
Flanged system angles
(Attach per
manufacturer's
instructions)
Duct
Figure 7: Detail of manufactured flanged system breakaway
connections.
Fire Damper Sleeve
Do not bolt corners
Neoprene gasket
between all angles
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