Greenheck Smd-401m Smoke Damper Instruction Manual (+ PDF)

Contents hide

1 SMD-401M Smoke Damper

2 Product Information:

3 Product Usage Instructions:

3.1 Documents / Resources

3.1.1 References

SMD-401M Smoke Damper

Product Information:

Product Name: SMD-401M Smoke Damper

Application: The SMD-401M is a class I leakage
rated modulating smoke damper with extruded airfoil blades. It can
be installed vertically (with blades running horizontal) or
horizontally and is rated for airflow and leakage in either
direction.

Ratings:

UL 555S Leakage Rating Leakage Class: I
Operational Rating:
- Velocity: Up to 2000 fpm (10.2 m/s)
- Pressure: Up to 4 in. wg (1 kPa)

Construction:

Frame Material: Standard Galvanized steel
Frame Material Thickness: 16 ga. (1.5mm)
Frame Type: 5 in. x 1in. (127mm x 25mm) hat channel
Aluminum
Blade Material: Heavy gauge aluminum
Blade Material Thickness: Airfoil
Blade Type: Opposed Plated steel out of airstream, concealed in
jamb
Blade Action: 316SS Plated steel
Linkage: Silicone Stainless Steel (Optional)
Axle Bearings: –
Axle Material: –
Blade Seals: –
Jamb Seals: –

Note: The frames are constructed with
reinforced corners. Low profile head and sill are used on sizes
less than 17 in. (432mm) high for lower pressure drop and improved
damper performance.

Product Usage Instructions:

Ensure the SMD-401M Smoke Damper is installed in accordance
with the installation instructions provided.
Verify that the damper is installed vertically (with blades
running horizontal) or horizontally as per your specific
requirements.
Make sure the damper is rated for the desired airflow and
leakage in either direction.
Check the operational ratings of the damper, including the
maximum velocity (up to 2000 fpm or 10.2 m/s) and pressure (up to 4
in. wg or 1 kPa).
Inspect the construction of the damper, including the frame
material (standard galvanized steel), frame material thickness (16
ga. or 1.5mm), frame type (5 in. x 1in. hat channel aluminum),
blade material (heavy gauge aluminum), blade material thickness
(airfoil), blade type (opposed plated steel out of airstream,
concealed in jamb), blade action (316SS plated steel), and linkage
(silicone stainless steel – optional).
Ensure that the damper is properly sealed and that all
necessary components, such as axle bearings, axle material, blade
seals, and jamb seals, are included if required.
Refer to the complete marking on the product for additional
information and UL 555S Classification R13317.
Verify that the SMD-401M Smoke Damper meets the requirements
for smoke dampers established by National Fire Protection
Association (NFPA) Standards 90A, 92, 101 & 105, IBC
International Building Codes, and CSFM California State Fire
Marshal Leakage (Smoke) Damper Listing (#3230-0981:104).
Refer to the provided document links for installation
instructions, life safety damper catalog, damper product selection
guide, specifications, and damper warranty.
For pressure drop information, refer to the AMCA 5.2, 5D, 6D,
and 5.3 standards for different damper sizes and velocities.

View Fullscreen

SMD-401M
Smoke Damper

Application
Model SMD-401M is a class I leakage rated modulating smoke damper with extruded airfoil blades. Model SMD-401 may be installed vertically (with blades running horizontal) or horizontally and is rated for airflow and leakage in either direction.
Ratings
UL 555S Leakage Rating Leakage Class: I
Operational Rating: Actual ratings are size dependent Velocity: Up to 2000 fpm (10.2 m/s) Pressure: Up to 4 in. wg (1 kPa)
Temperature: Up to 250°F (177°C)

Construction

Frame Material Frame Material Thickness
Frame Type
Blade Material Blade Material Thickness Blade Type Blade Action
Linkage
Axle Bearings Axle Material Blade Seals Jamb Seals

Standard Galvanized steel
16 ga. (1.5mm)
5 in. x 1in. (127mm x 25mm)
hat channel Aluminum
Heavy gauge aluminum
Airfoil Opposed Plated steel out of airstream, concealed in jamb
316SS Plated steel
Silicone Stainless Steel

Optional –
–
–
–
–

Note:
The frames are constructed with reinforced corners. Low profile head and sill are used on sizes less than 17 in. (432mm) high for lower pressure drop and improved damper performance.

RH
W&H dimensions furnished approximately 1/4 in. (6mm) undersize. (Add sleeve thickness for overall sleeved damper dimension). Right hand drive is shown.
See complete marking on product. UL 555S Classification R13317
Model SMD-401M meets the requirements for smoke dampers established by: National Fire Protection Association NFPA Standards 90A, 92, 101 & 105 IBC International Building Codes CSFM California State Fire Marshal Leakage (Smoke) Damper Listing (#3230-0981:104)

W x H

Minimum Size

Maximum Size

Single Section

Multiple Section

2000 fpm (10.2 m/s); 4 in. wg (1 kPa) pressure

Inches

8 x 8

36 x 36

36 x 72

203 x 203

914 x 914

914 x 1829

SMD-401M

January 2023

Options
· Breakaway connections · Greenheck test switches · Momentary test switch · Retaining angles · OCI (Open closed indication switches) · Sealed transitions and sleeves · Security bars · Smoke detectors · Transitions: C, O, R · Clean wrap
Document Links
Installation Instructions

Life Safety Damper Catalog

Damper Product Selection Guide

Specifications

Damper Warranty

SMD-401M

January 2023

Pressure Drop
AMCA 5.2
5D

12 in. x 12 in. (305mm x 305mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.06 0.13 0.23 0.35 0.50 0.68 0.88

24 in. x 24 in. (610mm x 610mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.04 0.10 0.18 0.28 0.40 0.54 0.70

36 in. x 36 in. (914mm x 914mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.03 0.06 0.12 0.18 0.26 0.35 0.46

12 in. x 48 in. (305mm x 1219mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.06 0.13 0.23 0.36 0.51 0.71 0.93

48 in. x 12 in. (1219mm x 305mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.03 0.06 0.10 0.16 0.23 0.30 0.39

AMCA 5.3

12 in. x 12 in. (305mm x 305mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.03 0.07 0.14 0.21 0.29 0.39 0.51

AMCA 5.5

24 in. x 24 in. (610mm x 610mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.02 0.04 0.08 0.13 0.19 0.26 0.34

36 in. x 36 in. (914mm x 914mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.01 0.02 0.04 0.06 0.09 0.13 0.17

12 in. x 48 in. (305mm x 1219mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.03 0.06 0.11 0.17 0.25 0.34 0.45

48 in. x 12 in. (1219mm x 305mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.01 0.02 0.04 0.08 0.12 0.18 0.24 0.31

12 in. x 12 in. (305mm x 305mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.04 0.14 0.31 0.55 0.86 1.23 1.67 2.19

24 in. x 24 in. (610mm x 610mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.03 0.12 0.27 0.48 0.75 1.07 1.47 1.91

36 in. x 36 in. (914mm x 914mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.03 0.10 0.22 0.39 0.61 0.87 1.19 1.56

12 in. x 48 in. (305mm x 1219mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.03 0.11 0.25 0.46 0.72 1.05 1.43 1.87

48 in. x 12 in. (1219mm x 305mm)

Velocity (fpm)

Pressure Drop (in. wg)

500 1000 1500 2000 2500 3000 3500 4000

0.03 0.11 0.26 0.46 0.72 1.02 1.40 1.83

SMD-401M

January 2023

Space Envelopes
Externally mounted actuators always require space outside of the damper sideplate or sleeve. On dampers less than 18 in. (457mm) high, actuators may also require clearances above and/or below the sideplate or sleeve. “B” and “T” dimensions are worst case clearance requirements for some dampers less than 18 in. (457mm) high. All dampers 18 in. (457mm) or more in height, do not require these worst case clearances. If space availability above or below the damper sleeve is limited, each damper size should be individually evaluated.
T* S

Actuator Type/Model

B* With OCI

T* With OCI

24 Volt AC

FSAFB24-SR Belimo

1/2 in. (13 mm)

913/16 in. (249mm)

FSAFB24-SR-S Belimo

1/2 in. (13 mm)

913/16 in. (249 mm)

*When damper height is 18 in. (457mm) or greater, these dimensions are zero.

PiggyBack

Yes

6 in. (152 mm)

SMD-401M

January 2023

Contained Actuator Option
Dampers can be ordered with a “contained actuator option”. This option will result in the actuator being oriented such that it extends no more than 11/2 inches above or below the sleeve. Note that some damper configurations that are 11 inches high or less will have the OCI mounted on the side opposite the actuator when the contained actuator option is selected.

RRL, RRL/OCI, OCI or TOR opposite actuator

Components contained within 1½ in. of sleeve top and bottom

Sleeve Length Damper Location
Actuator Parallel

1½ in.
RRL, RRL/OCI, OCI or TOR
Sleeve and Sideplate Dimensions
The drawings below illustrate the factory standard sideplate and sleeve mountings for the SMD-401. The standard “A” dimensions listed in the table provide adequate space for the mounting of actuators and controls. If space constraints are a problem the “A” dimension can be varied between 6 /316 in. (157mm) and 16 in. (406mm).

6 in.

Sideplate

5 in.
A
Sideplate Length**

in. (mm)
All Dampers When Height is 11 in. (279) or less with OCI

“A” Dimension

Standard

Maximum

7 /3 16 in. (183)

16 (406)

12 (305)

16 (406)

Sideplate 63/16 (157) 12 (305)

NOTE: Entire damper frame is not required to be installed within the wall.

Sleeve SMD-401M

January 2023

Transitioned Damper Dimensions

SMD-401M
Smoke Damper

When a fire/smoke damper is being used in conjunction with round or oval ductwork, the SMD-401 can be supplied in a factory sleeve with round or oval transitions on both ends of the sleeve. Dampers should be ordered to the duct dimensions. Drawings below show overall damper size.

D* + 2 in. (51mm) +Ts D* + 2 in. (51mm)+Ts

W* + 2 in. (51mm)+Ts
H* + 2 in. (51mm)+Ts 2 1/8 in. (54mm)

W* + 2 in. (51mm)+Ts
H* + 2 in. (51mm)+Ts 2 1/8 in. H* (54mm)

2 1/8 in. H* (54mm)

16 in.

(406mm)

Minimum

W*
16 in. (406mm) Minimum

W* 16 in. (406mm) Minimum

TYPE R

TYPE O

TYPE C

* These dimensions are furnished approximately 1/4 in. (6mm) undersize, except round and oval dimensions which are approximately 1/8 in. (3mm) undersize.

Ts = (2)(Sleeve Thickness)

Multiple Section Dampers
Dampers larger than maximum single section size are supplied as a factory assembly of two or more sections of equal size. The following figures show maximum damper section size and assembly configurations for multi-section dampers.

72 in. (1829 mm)
36 in. (914 mm)
2 section

36 in. (914 mm)

Copyright ® 2023 Greenheck Fan Corporation SMD-401M, R21, January 2023
Greenheck Fan Corporation reserves the right to make product changes without notice