Greenheck SMD Series Flange Mounted Installation

®
Refer to:
'Installation Instructions for SMD, SESMD, SSSMD
series models' (Part #461338) for additional details.
1. Smoke Damper Requirements and Application
Smoke dampers are required to close and prevent
the passage of air and smoke through the ducts or
ventilation openings in smoke barriers. Smoke dampers
are also applied in engineered smoke control systems to
establish air pressure differentials and thereby prevent
the spread of smoke. These dampers are designed to
operate with blades running horizontally. Dampers can
be vertically or horizontally installed at, in accordance
with NFPA 90A or adjacent to the point where the duct
passes through the smoke barrier.
2. Location of Damper in Ductwork
Place the damper assembly in its proper position
relative to the barrier. The plane of the closed damper
blades must be within 24 in. (610mm) of the rated
smoke barrier and before any duct inlets or outlets.
3. Attaching Damper to the Duct
The damper is flange mounted to the duct, sleeve, or
wall opening using:
#10 sheet metal screws,
1 ⁄ in. (6mm) diameter nuts and bolts,
4
tack or spot welds. or
3 ⁄ in. (5mm) diameter steel pop rivets.
16
Attachments must be made at each flange spaced a
maximum of 6 in. (152mm) on centers and a maximum
of 2 in. (51mm) from corners.
4. Sealing the Installation
The following duct sealants may be used to seal
between the damper's flange and the mating surface in
accordance with SMACNA recommendations:
Precision PA2084T duct sealant adhesive,
Design Polymetrics DP1010 water base duct
sealant,
Grey Pookie, or
Ductmate PROseal
5. Actuator Connections
Electrical and/or pneumatic connections to damper
actuators should be made in accordance with wiring
and piping diagrams developed in compliance with
applicable codes, ordinances and regulations.
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®
Flange Mounted Installation for
SMD-xxx, SESMD-xxx, and SSSMD-xxx Series
Maximum Single
Section Size
Damper Model
SMD-301, 302
(813 x 1270)
SMD-301M, 302M
SMD-401
(1219 x 7315)
SMD-401M
(1219 x 914)
Document 472664
Smoke Dampers
See complete marking on
product.
UL 555S Classification
R13317
Maximum Overall
Size for Multiple
Section Dampers
in. (mm)
in. (mm)
128 x 100 or
256 x 50
32 x 50
(3251 x 2540) or
(6502 x 1270)
192 x 72, 48 x 288,
or 384 x 36
48 x 60
(4877 x 1829,
1219 x 7315, or
9754 x 914)
48 x 36 144 x 36
(3658 x 914)
Flange Mounted SMD 1