Greenheck SMD, SMDR, SSSMD User Manual

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Document Number 461338

®

SMD-XXX, SMD-XXXV, SESMD-XXX,

SSSMD-XXX,SMDRXXX, SESMDR-XXX,

AND SSSMDR-XXX MODELS

Leakage Rated Smoke Dampers

Vertical or Horizontal Mount

Installation, Operation and Maintenance Instructions

These instructions apply to the installation of SMD-XXX, SESMD-XXX SSSMD-XXX, SMDR-XXX, SESMDR-XXX and
SSSMDR-XXX series leakage rated smoke dampers supplied with factory installed damper actuators. Specific requirements
in these instructions are mandatory. These instructions meet the requirements of UL 555S and UL classification R13317.

SMD-XXX, SESMD-XXX, SSSMD-XXX, SMDR-XXX,
SESMDR-XXX, and SSSMDR-XXX Model Dampers are

intended for installation in accordance with smoke damper
requirements established by:

National Fire Protection Association
NFPA Standards 92A, 92B, & 105

IBC International Building Codes
New York City (MEA listing #260-91-M)

Typical Actuato

OCI Blade Indicator
(optional)

California State Fire Marshal (Listing #3230-0981:104)

“UL CLASSIFIED (see complete marking on product)”
“UL CLASSIFIED to Canadian safety standards (see

complete marking on product)”
UL Standard 555S (Classification #R13317)

Receiving and Handling

Upon receiving dampers, check for both obvious and
hidden damage. If damage is found, record all necessary
information on the bill of lading and file a claim with
the final carrier. Check to be sure that all parts of the
shipment, including accessories, are accounted for.

Dampers must be kept dry and clean. Indoor storage

and protection from dirt, dust and the weather is highly

recommended. Do not store at temperatures in excess of

100°F (38°C).

Safety Warning:

Improper installation, adjustment, alteration, service
or maintenance can cause property damage, injury or
death. Read the installation, operating, and maintenance
instructions thoroughly before installing or servicing this
equipment.

This manual is the property of the owner, and is required
for future maintenance. Please leave it with the owner
when the job is complete.

Due to continuing research, Greenheck reserves the right to change specifications without notice.

Refer to the appropriate Greenheck installation
supplements for special requirements:

• Smoke Detector Supplement (463813)

• No Flow Duct Smoke Detector (465915)

• Drive Slip Breakaway Supplement (468769)

• Quick Connect Breakaway Supplement

• Open or Close Indicator Supplement (459656)

• Double Flange Mounted Supplement (472664)

Greenheck warrants this equipment to be free from
defects in material and workmanship for a period of one
year from the shipment date. Any units or parts which
prove to be defective during the warranty period will be
repaired or replaced at our option. Greenheck shall not
be liable for damages resulting from misapplication or
misuse of its products. Greenheck will not be responsible
for any installation or removal costs. Greenheck will not
be responsible for any service work or backcharges
without prior written authorization.

Installation Supplements

(468502)

Warranty

Table of Contents

24 in.

Ductwork

Duct Outlet

Smoke
Barrier

Sealant

Damper

Sealant

Pre-Installation Guidelines .............................................................................................................................................2

Installation .....................................................................................................................................................................3

• Smoke Damper Requirements ....................................................................................................................................3

• Location of Damper in Ductwork ..............................................................................................................................3

• Attaching Damper to the Duct ...................................................................................................................................3

• Installing Multiple Damper Section Assemblies .......................................................................................................3

• Sealing the Installation ................................................................................................................................................3

• Actuator Connections .................................................................................................................................................3

• Connection and Operation of Open/Close Indicator .................................................................................................3

SMDR-XXX and SSSMDR Blade Orientation................................................................................................................4

Maintenance ...................................................................................................................................................................4

Troubleshooting ..............................................................................................................................................................4

Pre-Installation Guidelines

The basic intent of a proper installation is to secure the smoke damper in, not to, the opening or duct in such a manner as
to prevent distortion and disruption of damper operation. The following items will aid in completing the damper installation
in a timely and effective manner.

1) Lift or handle damper using sleeve or frame. Do not lift damper using blades or actuators.

2) Damper (rectangular) has label on outside of sleeve indicating a ‘No Screw’ area. Do not install screws into this
area as screws may interfere with unexposed blade linkage and prevent damper blades from opening and/or
closing.

3) Damper must be installed into duct or opening square (round) and free of twist or other misalignment. Damper
must not be squeezed or stretched into duct or opening. Out of square, out of round, racked, twisted or
misaligned installations can cause excessive leakage and/or torque requirements to exceed damper/actuator
design.

4) Damper and actuator must be kept clean and protected from dirt, dust and other foreign materials prior to and
after installation. Examples of such foreign materials include but are not limited to:

a) Mortar dust
b) Drywall dust
c) Firesafing materials
d) Wall texture
e) Paint overspray

5) Damper should be sufficiently covered as to prevent overspray if wall texturing or spray painting will be
performed within 5 feet of the damper. Excessive dirt or foreign material deposits on damper can cause
excessive leakage and/or torque requirements to exceed damper/actuator design.

6) Caulking is not necessary, however, may be applied to optional retaining angles.

7) The Code Authority Having Jurisdiction (AHJ) must evaluate and provide approval of final installation where
variations to these instructions are necessary.

Installation - Failure to follow these instructions will void all warranties.

1. SMOKE DAMPER REQUIREMENTS

Smoke dampers are required to close and prevent the
passage of air and smoke through 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.

2. LOCATION OF DAMPER IN DUCTWORK

Place the damper assembly in its proper position relative
to the barrier as shown (in Figure 1). 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.

2

Fig. 1

3. ATTACHING DAMPER TO THE DUCT

Attach the damper to the duct using #10 sheet metal
screws, 1/4 in. (6mm) diameter bolts and nuts, tack or
spot welds, or 3/16 in. (5mm) diameter steel pop rivets.
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 on rectangular dampers, and on
round dampers as follows: Ducts 22 in. (559mm) in diameter
and smaller shall have three attachments. Ducts larger
than 22 in. (559mm) in diameter up to and including 36 in.,
(914mm) have five attachments.

4. INSTALLING MULTIPLE DAMPER SECTION
ASSEMBLIES

The damper assembly is not restricted to a maximum
number of sections, but must not exceed the section sizes
and assembly sizes shown below.

6. 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.

7. CONNECTION AND OPERATION OF OPEN/CLOSE
INDICATOR

OCI - The OCI (open or closed indicator) option contains

a single pole, double throw switch used to indicate
the damper blade position. The switch provides
a positive open or closed signal when used in
conjunction with remote indicator lights. Refer to Fig.
2 for wiring of the OCI option.

Damper model

SMD-201, 202,

203

SMD-201M, 202M 36 x 36

SMD-301, 302

SMD-301M, 302M

SMD-401

SMDR, SESMDR,

SSSMDR

SESMD-201,

SSSMD-201

SMD-301V

SMD-401M

Maximum Single

Section Size

in. (mm)

36 x 48 or 32 x 50

(914 x 1219 or

813 x 1270)

32 x 50

(813 x 1270)

32 x 50

(813 x 1270)

48 x 60

(1219 x 7315)

24

(610)

24 x 30

(610 x 762)

50 x 32

(1270 x 813)

36 x 36

(914 x 914)

Maximum Overall

Size for Multiple

Section Dampers

in. (mm)

144 x 100 or 288 x 50

(3658 x 2540 or

7315 x 1270)

144 x 72 or 288 x 36

(3658 x 1829 or

7315 x 914)

128 x 100 or 256 x 50

(3251 x 2540) or

(6502 x 1270)

128 x 100 or 256 x 50

(3251 x 2540) or

(6502 x 1270)

192 x 120, 48 x 288,

or 384 x 36

(4877 x 1829,

1219 x 7315 or

9754 x 914)

NA

88 x 72

(2235 x 1829)

100 x 32

(2540 x 813)

144 x 72 or 288 x 36

(3658 x 1829 or

7315 x 914)

Fig. 2 OCI Wiring

RATINGS

Integral Switch Type: Single Pole, double throw
Electrical: 10 Amps, 1/3 hp, 120 or 240 Vac

1/2 Amp, 120 Vdc; 1/4 Amp 240 Vdc
5 Amps, 120 Vac “L” (lamp load)

1.0 Amps, 24 Vac

1.5 Amps, 24 Vdc

SMDR-XXX and SSSMDR-XXX Blade

Orientation

Axle

30°

The damper sections must be attached together with #10
sheet metal screws, 1/4 in. (6mm) diameter nuts and bolts,

1

/2 in. (13mm) long welds, or 3/16 in. (5mm) diameter steel

pop rivets.
On multiple section damper assemblies, the temperature

rating of wiring run in the airstream shall be at least equal to
the damper temperature rating plus 50°F (10°C).

5. SEALING THE INSTALLATION

After installing the damper in the ductwork, seal the joint
between the damper frame and the duct using Dow Corning
RTV 732 sealant, GE1200 series silicone construction
adhesive or Component Hardware SLT-5000 silicone
sealant. Make sure to press the sealant into the joint to
guarantee a proper seal. Use the minimum amount of
material required to completely seal the joint. See Figure 1.

Axle

30° Off Horizontal

(Maximum)

30° Off Horizontal

(Maximum)

30°

3

Damper Maintenance

Dampers do not typically require maintenance as long as
they are kept dry and clean. If cleaning is necessary, use
mild detergents or solvents. If lubrication is desired for
components such as axle bearings, jackshaft bearings and
jamb seals, do not use oil-based lubricants or any other
lubricants that attract contaminants such as dust.

Damper actuator(s) must be maintained, cycled, and tested

Axle

Normal

in accordance with:

• The latest editions of NFPA 90A, 92A, 92B, 105, UL864,
AMCA 503-03 and local codes.

• Actuator manufacturer recommendations.

Damper Troubleshooting

The following is a possible cause and correction list for common concerns with the dampers.

Sympton Possible Cause Corrective Action

Damper does not fully
open and/or close

RRL or TOR sensor
tripped

Damper does not
operate

Frame is 'racked' causing blades to bind
on jamb seals

Actuator linkage loose Close damper, disconnect power, adjust and tighten

Defective motor Replace

Screws in damper linkage Damper installed too far into wall. Move out to line as

Contaminants on damper Clean with a non-oil based solvent (see Damper

Heat Push reset button located on backside of RRL or TOR

No power supplied to the actuator Add power supply

Adjust frame such that it is square and plumb

linkage

designated on damper label

Maintenance)

Our Commitment

As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.

Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in
the Library under Warranties.

®

Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website: www.greenheck.com

461338• Smoke Dampers IOM Rev. 14, November 2014 Copyright 2014 © Greenheck Fan Corporation

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