Greenheck SMD-401M User Manual

SMD-401M

APPLICATION

Model SMD-401M is a class I leakage rated modulating smoke damper. The model SMD-401M serves the function of both a control damper and smoke damper. High strength airfoil blades ensure the lowest resistance to airflow in HVAC systems with velocities to 2000 fpm (10.2 m/s ) and 4 wg (1 kPa). Model SMD-401M may be installed vertically (with blades running horizontal) or horizontally and is rated for airflow and leakage in either direction.

RATINGS

Leakage Class: I Operational Rating: Actual ratings are size dependent.

Max. Velocity: up to 2000 fpm (10.2 m/s) Max. Pressure: 4 in. wg (1 kPa) Temperature: 250°F (121ºC) with all actuators.

Construction Standard Optional

Frame Material Galvanized steel -

Frame Material Thickness

Frame Type

Blade Material Aluminum -

Blade Material Thickness

Blade Type Airfoil -

Linkage

Axle Bearings Bronze 304SS

Axle Material Plated steel 304SS

Blade Seals Silicone -

Jamb Seals 304SS -

16 ga. (1.5mm) -

5 in. x 1in.

(127mm x 25mm)

hat channel

Heavy gauge

aluminum

Plated steel out of

airstream, concealed

in jamb

Double Flange

304SS

Size Limitations

Smoke Dampers

Extruded Airfoil Blades

UL 555S Leakage Class I

Model SMD-401M meets the requirements for smoke dampers established by:

National Fire Protection Association

NFPA Standards 92A, 92B, 101 & 105

IBC International Building Codes New York City (MEA listing #260-91-M) CSFM California State Fire Marshal

Leakage (Smoke) Damper Listing (#3230-0981:104)

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

Standard 555S (Listing #R13317)

W x H

Inches 8 x 8 36 x 36 144 x 36

mm 203 x 203 914 x 914 3658 x 914

Minimum

Size

Maximum Size

Single

Section

Multiple Section

OPTIONS:

• Factory mounted accessories

- Retaining angles

- Quick connect breakaway connections

- S & drive connections

- Access doors

• Greenheck test switches (GTS-3 & GTS-4)

• Momentary test switch

• POC retaining angles

• OCI (Open closed indication switches)

• Sealed transitions and sleeves

• Security bars

• Smoke detectors

• Transitions: R, C, O

*W&H dimensions furnished approximately 1/4 in. (6mm) undersize. (Add sleeve thickness for overall sleeved damper dimension) Right hand drive is shown. Left hand drive is available upon request.

Features:

• Frames are constructed with reinforced corners. Low profile head and sill are used on sizes less than 17 in.

high (432mm).

• Blades are extruded aluminum airfoil, symmetrically shaped.

• Actuators: 24V

Installation instructions available at www.greenheck.com

SMD-401M Pressure Drop Data

Pressure Loss (in. wg)

This pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three configurations shown. All data has been corrected to represent standard air at a density of .075 lb/ft

Actual pressure drop found in any HVAC system is a combination of many factors. This pressure drop information along with an analysis of other system influences should be used to estimate actual pressure losses for a damper installed in a given HVAC system.

(1.201 kg/m3 ).

AMCA Test Figures

Figure 5.3 Illustrates a fully ducted damper. This

configuration has the lowest pressure drop of the three test configurations because entrance and exit losses are minimized by straight duct runs upstream and downstream of the damper.

Figure 5.2 Illustrates a ducted damper exhausting air into an open area. This configuration has a lower pressure drop than Figure 5.5 because entrance losses are minimized by a straight duct run upstream of the damper.

Figure 5.5 Illustrates a plenum mounted damper. This configuration has the highest pressure drop because of extremely high entrance and exit losses due to the sudden changes of area in the system.

Damper Size

12 in. x 12 in.

(305mm x 305mm)

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

5.5

5.2

5.3

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

Figure 5.3

Figure 5.2

Figure 5.5

Damper Size

24 in. x 24 in.

(610mm x 610mm)

5D 6D

Damper Size

36 in. x 36 in.

(914mm x 914mm)

10.0

9.0

8.0

7.0

6.0

5.0

4.0

5.5

3.0

2.0

4 (W) (H

)

3.14

5.5

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

Pressure Loss (in. wg)

0.10

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

4 5 6 7 8 9 10

x 100

2 3 4 5 6 7 8 9 10

Velocity (fpm)

x 1000

0.10

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

4 5 6 7 8 9 10

x 100

2 3 4 5 6 7 8 9 10

Velocity (fpm)

5.2

5.3

x 1000

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

Pressure Loss (in. wg)

0.10

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

4 5 6 7 8 9 10

x 100

5.2

5.3

2 3 4 5 6 7 8 9 10

Velocity (fpm)

x 1000

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