Breakaway Connections - Greenheck CFSD-211 Installation, Operation And Maintenance Manual

Metal Stud Construction
Metal Stud Construction
Gypsum Wallboard
Gypsum Wallboard
Stud or Runner
Retaining
Retaining
Angle
Angle
In metal stud construction,
Damper In metal stud construction,
exposed steel surfaces need
Damper
Sleeve
exposed steel surfaces need
Sleeve
not be covered with gypsum
not be covered with gypsum
Fig. 10
wallboard.
wallboard.
Wooden Stud Construction
Wooden Stud Construction
Gypsum Wallboard
Gypsum Wallboard
Retaining
Retaining
Angle
Angle
In wood stud construction,
Damper
In wood stud construction,
Damper
Sleeve gypsum wallboard must cover
Sleeve gypsum wallboard must cover
all wood stud surfaces.
all wood stud surfaces.
Fig. 11
24 in. o.c.
Maximum
(metal studs)
12 in.
24 in. o.c.
Maximum
16 in. o.c.
Maximum
(wood studs)
Fig. 12
Floor Runner
9. DUCT-SLEEVE COnnECTIOnS
Traditional Breakaway Style Transverse Joints
Transverse joints illustrated at right have always been
approved as breakaway connections. SMACNA testing
has also approved the following variations as breakaway
connections.
• T he breakaway connections shown (Fig. 14) can
be applied with maximum of two #10 (19mm)
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.
Stud or Runner
1 in. Min.
1 in. Min.
Stud or Runner
Stud or Runner
1 in. Min.
1 in. Min.
24 in. o.c.
Ceiling Runner
Maximum
(metal studs)
2 in. (51mm)
2 Panhead
Screws
2 in. (51mm)
16 in. o.c.
Maximum
(wood studs)
• T ransverse joints illustrated
can be applied as top and
bottom joints with Drive Slip
- side joints in duct heights
up to 20 inches (508mm)
See Fig. 13.
Plain "S" Slip Hemmed "S" Slip
Inside Slip Joint Standing "S"
Standing "S" (Alt.) Standing "S"
(Bar Reinforced)
Fig. 14
round and Oval Duct Breakaway Connections
Round or flat oval ducts connected to Type R or O damper
collars shall be attached with #10 (19mm) sheet metal
screws as follows:
• D ucts to 22 in. (558mm) wide (or dia.) and smaller
shall have three screws.
• D ucts larger than 22 in. (558mm) wide (or dia.) up to
and including 36 in. (914mm) wide (or dia.) shall have
five screws.
NOTE: All breakaway connections described may have duct
sealant applied, PA2084T duct sealant adhesive
manufactured by Precision, DP1010 water base duct
sealant manufactured by Design Polymetrics, Grey Pookie
or Ductmate PROseal
recommendations.
Manufactured Flanged System Breakaway
Connections
Flanged connection systems manufactured by Ductmate,
Ward, and Nexus are approved as breakaway connections
when installed as illustrated (Fig. 15).
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
Fig. 15
Drive Slip Joint
Fig. 13
Double "S" Slip
Standing "S" (Alt.)
Standing "S"
(Angle Reinforced)
® in accordance with SMACNA
Fire Damper Sleeve
Do not bolt corners
Neoprene gasket
between all angles
7