Greenheck DFD Series Installation, Operation And Maintenance Manual page 10

Manufactured Flanged System Breakaway Connections
Flanged connection systems manufactured by Ductmate, Durodyne, Ward, Nexus, Radiant T-35m, and MEZ are
approved as breakaway connections when installed as illustrated (see Figure 18).
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. Standard 6 in. (152 mm) metal clip may be used with
spacing as shown in diagram (see Figure 19 & 20). A
together corner pieces (see Figure 21).
Sleeve
Duct
Typical TDC/TDF joint
Figure 19
Sleeve
Duct
Typical TDC/TDF joint
#10 x 3/4"
TEK Screw
TDC or TDF
Connection
TDC/TDF to Manufactured Flange
Butyl Gasket
Flanged connection systems manufactured by Ductmate, Durodyne, Ward, Nexus, Radiant T-35m, and MEZ can
be connected to TDC and TDF system as an alternate breakaway connection. This alternate connection is covered
under the UL certification of the damper. See Supplement: Duct-Sleeve Connection (IOM #468502) for more
information.
Metal cleat
TDC or TDF
Connection
Butyl Gasket
Figure 22: Metal cleat method
10 Curtain Fire Dampers
6 in. long metal cleat or 1/16 in.
max. thickness plastic cleat;
12 in. c-c (min. 1 per side)
Flanged system angles
(Attach per
manufacturer's
instructions)
Duct
Figure 18
Clip Spacing
Std. Clip
Length
9 in.
6 in. 6 in.
60 in. Duct
4 Req'd.
Clip Spacing
Std. Clip
7 in.
Length
48 in. Duct
3 Req'd.
5 in.
6 in. 6 in.
60 in. Duct
36 in. Duct
3 Req'd.
4 Req'd.
5 in.
7 in.
24 in. Duct
48 in. Duct
2 Req'd.
3 Req'd.
5 in.
18 in. Duct &
Smaller
36 in. Duct C L
1 Req'd.
Duct
3 Req'd.
5 in.
24 in. Duct
2 Req'd.
18 in. Duct &
Smaller
Spot weld or Tek screw per
1 Req'd.
manufacturer instructions
Figure 20
Damper Sleeve
Spot weld or Tek screw per
manufacturer instructions
Damper Sleeve
Fire Damper Sleeve
3/8 in. bolts in
corners are optional
Neoprene or Butyl gasket
between all angles
⁄ in. (9.5 mm) metal bolts and nuts may be used to fasten
3
8
6 in.
7 in.
9 in.
5 in.
6 in.
5 in.
7 in.
5 in.
5 in.
C L
Duct
#10 x 3/4"
TEK Screw
TDC or TDF
Connection
Butyl Gasket
Figure 23: Screw method
Metal cleat
TDC or TDF
Connection
Duct End
Flange
Corner Piece
Figure 21
Spot weld or Tek screw per
manufacturer instructions
Damper Sleeve
Spot weld or Tek screw per
manufacturer instructions
3/8 in. bolt
(optional)
®