Greenheck Extruded Backdraft Damper EM-40 Manuel utilisateur

Application and Design

The EM-40 series is a horizontally mounted backdraft damper that is designed to allow vertical airflow down and prevent

reverse airflow. The damper is opened by air pressure differential and closed by gravity. Standard models include adjustable

counterbalance weights to assist closing.

Ratings (See page 2 for specific limitations)

Pressure: 4.0 - 10.0 in. wg (996 Pa - 2491 Pa)

differential pressure

Velocity: 2500 to 3500 fpm (13m/s - 18 m/s)

Temperature: 180°F (82ºC)

Standard Construction

Frame: Heavy gauge 6063T5 extruded aluminum.

(0.125 in.[3.2mm] thickness)

Blades: Heavy gauge 6063T5 extruded aluminum.

(0.070 in. [1.8mm] thickness)

Axles: 3

/4in. (19mm) dia. metallic

Bearings: Synthetic (acetal) sleeve type

Linkage: 1

/8in. (3mm) plated steel

Blade Seals: Vinyl

Size Limitations

Minimum Size: 8 in. W x 11 in. H

(203mm x 279mm)

Maximum Panel Size: 48 in. W x 74 in. H

(1219mm x 1880mm)

Options and Accessories

 • 11

/2in. flange on discharge: EM-41

 • 11

/2in. flange on intake: EM-42

 • APC(AdjustablePressureController).

  Allowsfieldsettingofreliefpressureon

all EM dampers. Use one per panel.

Maximum recommended pressure set

limitations are as follows:

EM-40 SERIES

Horizontal Mount - Vertical Airflow Down

Sizes larger than maximum shown will be supplied

as two or more equal size smaller dampers required

to make up the size specified. These larger multiple

damper assemblies require field assembly and may

require additional reinforcement (not supplied by

Greenheck) to support the assembly.

*W & H dimensions furnished approximately 1

/4in. (6mm) under size.

Extruded BACKDRAFT DAMPER

ADJUSTABLE COUNTERBALANCE

in.

Airflow

in.

3 in.

5 in.

in.

EM-40

No Flange

EM-41

Flange On

Discharge

EM-42

Flange On

Intake

Area ft2

(m2)

Maximum Set

Pressure

in. wg (Pa)

4 (.37) .75 (187)

6 (.56) .50 (125)

8 (100) .40 (100)

10 (.93) .30 (75)

15 (1.39) .20 (50)

20 (1.86) .15 (37)

24 (2.23) .125 (31) Counterbalance weights may require ﬁeld adjustment. Instructions are

available at www. greenheck.com.

Specifications

Backdraft dampers meeting the following specifications shall

be furnished and installed where shown on plans and/or as

described in schedules. Dampers shall consist of: heavy gauge

6063T5 extruded aluminum channel frame (0.125 in.[3.2mm]

thick) with 31Ú8in. (79mm) depth; blades from 0.070 in.(1.8mm)

6063T5 extruded aluminum; 3/4in. (19mm) dia. metallic axles

turning in acetal bearings; damper shall be equipped with

extruded vinyl blade seals; and internal 1

/8in. (3mm) plated

steel blade-to-blade linkage. Damper manufacturer’s printed

application and performance data including pressure, velocity

and temperature limitations shall be submitted for approval

showing damper suitable for pressures to 10 in. wg (2491 Pa),

velocities to 3500 fpm (18 m/s) and temperatures to 180°F

(82ºC).TestingandratingstobeinaccordancewithAMCA

Standard 500-D. Basis of design is Greenheck model EM-40.

Velocity (fpm)

x 10

Pressure Loss ( In. wg)

2 3 4 5 6 7 8 910

1.0

.10

.09

.08

.07

.06

.05

.04

.03

.02

x 100

2 3 4 5 6 7 8 910

x 1000

2 3 4 5 6 7 8 910

Pressure Drop

Performance data results from testing a 36 in. x 36 in.

(914mmx914mm)damperinaccordancewithAMCAStandard

500-DusingFigure5.7A(unducted).Alldatahasbeencorrected

to represent standard air at 0.075 lb/ft3(1.201 kg/m3).

Pressure Limitations

Velocity Limitations

Pressure (in. w.g.)

483624120

4.0 in. w.g.

6.0 in. w.g.

Damper Width (in.)

8.0 in. w.g.

10.0 in. w.g.

012243648

3000 fpm

2500 fpm

Damper Height (in.)

Damper Width (in.)

3500 fpm

140

1.0

Static Pressure Difference

Air Leakage in CFM/Sq. Ft.

1 2 3 4 5 6 7 8 910 20 30 40 50 60

Static Pressure Difference

1.0

Air Leakage in CFM/Sq. Ft.

1 2 3 4 5 6 7 8 910 20 30 40 50 60 70 80 90 100 150

EM-10

Air Leakage in CFM/Sq. Ft.

1 2 3 4 5 6 7 8 9

20 30 40 50 60 70 80 90100 150

1.0

8.5

Static Pressure Difference

130

With Seals

Without Seals

LeakagetestingwasconductedinaccordancewithAMCA

Standard 500-D and is expressed as CFM per sq. ft. of damper

facearea.Alldatahasbeencorrectedtorepresentstandardair

at 0.075 lb/ft3 (1.201 kg/m3).

Leakage

36 in. x 36 in. Damper

EM-40Rev4Aug2008

Performance Data EM-40

Operational Data ÆP in. wg

(Pa)

Veloc-

ity fpm

(m/s)

Damper with Standard

Bearings

Blades Start to Open 0.07 (17) 50 (.254)

Blades Fully Open 0.20 (50) 1200 (6.2)

Table des matières

Autres manuels Greenheck hotte de ventilation

Greenheck

Greenheck Series L Manuel utilisateur

Greenheck

Greenheck Grease Grabber GGH2O Manuel utilisateur

Greenheck

Greenheck FSD Series Manuel du propriétaire

Greenheck

Greenheck PN 458294 Manuel utilisateur

Greenheck

Greenheck DFDR-XXX Mode d’emploi

Greenheck

Greenheck UL 762 Manuel du propriétaire

Greenheck

Greenheck KFD Series Manuel utilisateur

Greenheck

Greenheck SEFSD Series Manuel utilisateur

Greenheck

Greenheck SP Manuel utilisateur

Greenheck

Greenheck CSP-B Manuel utilisateur

Greenheck

Greenheck Vektor-M Compact ERS Manuel utilisateur

Greenheck

Greenheck FGI Series Manuel utilisateur

Greenheck

Greenheck FSD Series Manuel du propriétaire

Greenheck

Greenheck Steel Airfoil Blades FSD-331 Manuel utilisateur

Greenheck

Greenheck G Manuel utilisateur

Greenheck

Greenheck ODFD-XXX Mode d’emploi

Greenheck

Greenheck ERVe Manuel utilisateur

Greenheck

Greenheck BR-30 Series Manuel utilisateur

Greenheck

Greenheck RBU Manuel utilisateur

Greenheck

Greenheck Inline Centrifugal Grease Fan Manuel utilisateur

Greenheck

Greenheck Vektor Series Manuel utilisateur

Greenheck

Greenheck Round Steel Blade FSDR-511 Manuel utilisateur

Greenheck

Greenheck 458292 Manuel utilisateur

Greenheck

Greenheck Steel Airfoil Blades SMD-301M Manuel utilisateur

Manuels hotte de ventilation populaires d'autres marques

emmeti

emmeti RECUPA MED A-140 Mode d’emploi

Nibe

Nibe F135 Manuel utilisateur

Kuppersberg

Kuppersberg INTRO 60 Instructions d'installation et d'entretien

Zephyr

Zephyr Spruce AK9834BS Guide d'installation

Hisense

Hisense MH6INBG Manuel utilisateur

Miele

Miele DA 1255 Manuel utilisateur

Broan

Broan 46000 Manuel utilisateur

GE Profile PV977 Instructions originales

FALMEC

FALMEC FFRIA24W5FS Manuel utilisateur

Whirlpool

Whirlpool RH2600XL-1 SERIES Manuel utilisateur

Küppersbusch

Küppersbusch DX ISLA Manuel utilisateur

ETNA

ETNA AV360RVS Manuel utilisateur

JUNO

JUNO JDF603E6 Manuel utilisateur

Miele

Miele DA 6708 D Manuel utilisateur

Tricity Bendix

Tricity Bendix LE 150 Manuel

AEG

AEG X68163BV1 Manuel utilisateur

AEG

AEG 125 D Manuel utilisateur

Smeg

Smeg KSEV97X Manuel utilisateur