model ECD-635extruded aluminum louver

6" deep • 35° horizontal drainable blade

Ext

rude

d A

lum

inum

Lou

vers

ECD63

5(1

/2) F

ebru

ary

2015

ApplicationThe ECD-635 offers exceptional protection against wind-drivenrain under the most severe conditions and is ideally suited forhigh wind areas or applications that are sensitive to wind-drivenrain penetration. The ECD-635 incorporates horizontal bladesand is available in a wide array of anodized and painted finishesincluding custom color matching.

Standard ConstructionMaterial: Mill finish 6063-T5 extruded aluminum.

Frame: 6" deep ¥ 0.081" thick (152 ¥ 2) channel.

Blades: 35° ¥ 0.070" thick (2) horizontal drainable style.

Screen: 1/2" ¥ 0.063" (12.7 ¥ 1.6) expanded and flattenedaluminum.

Mullion: Visible.

Minimum Size: 4.5" ¥ 7" (114 ¥ 178)

Maximum Size: Single section:  60" ¥ 120" (1524 ¥ 3048)120" ¥ 60" (3048 ¥ 1524)

Multiple section: Unlimited

Optionso Factory finish:o High Performance Fluoropolymer - 100% resin Newlar®/

70% resin Kynar®

o Baked Enamelo Clear or Color Anodized, Class 1o Prime Coat

o Hidden vertical mullion for continuous blade appearance.

o Flange frame:o 11/2" (38) flangeo Custom-size flangeo Stucco flangeo Glazing frame

o Welded construction.

o Alternate bird or insect screens.

o Insulated or non-insulated blank-off panels.

o Filter racks.

o Hinged frame.

o Head and/or sill flashing.o Installation hardware:o Clip angleso Continuous angles

o Burglar bars.o Frame closure.

POTTORFF® 5101 Blue Mound Road, Fort Worth, Texas 76106 www.pottorff.com

Information is subject to change without notice or obligation. NOTE: Dimensions in parentheses ( ) are millimeters.

RatingsFree Area: [48" ¥ 48" (1219 ¥ 1219) unit]: 8.6 ft2 (0.80 m2)

53.8%

Performance @ Beginning Point of Water PenetrationFree Area Velocity: 1,217 fpm (6.18 m/s)Air Volume Delivered: 10,508 cfm (4.96 m3/s)Pressure Loss: 0.29 in.wg. (72 Pa)

Velocity @ 0.15 in.wg. Pressure Loss: 800 fpm (4.06 m/s)

Design Load: 30 psf

H*

W*

6-1/8" (154)

2"(52)

Model ECD-635(standard)

*Louver dimensions furnishedapproximately 1/2" (13) undersize.

Vertical Section†Screen adds approximately

3/16" (5) to louver depth.

Visible Vertical Mullion(standard)

Horizontal Mullion(standard)

I-MullionSeam Cover

Blade Stiffener (For W > 60")

Hidden Vertical Mullion(optional)

Blade Stiffener(For W > 60")

Gasket(field applied)

Formed Aluminum ‘Z’ usedas Jamb at Hidden Mullion

8-9/

16"

(218

)

HorizontalSplice

Flange Frame(optional)

1-1/2" (38)

Certified Ratings:Pottorff certifies that the model ECD-635shown herein is licensed to bear the AMCAseal. The ratings shown are based on testand procedures performed in accordancewith AMCA Publication 511 and comply withthe requirements of the AMCA CertifiedRatings Program. The AMCA CertifiedRatings seal applies to air performance, waterpenetration and wind-driven rain ratings.

Wind Driven Rain Performance — AMCA 500-L Wind Driven Rain TestTest louver Core Area1 is 39 3/8" ¥ 39 3/8".

NOTES 1. Core Area is the open area of the louver face (face area less louver frame). 2. Wind Driven Rain Penetration Classes. 3. Discharge Loss Coefficientis calculated by dividing the louvers’ actual airflow rate by the theoretical airflow rate for an unobstructed opening. The higher the coefficient the lower theresistance to air flow.

Ext

rude

d A

lum

inum

Lou

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ECD63

5(2

/2) F

ebru

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2015

Performance Data

POTTORFF® 5101 Blue Mound Road, Fort Worth, Texas 76106 www.pottorff.com

Information is subject to change without notice or obligation. NOTE: Dimensions in parentheses ( ) are millimeters.

Free Area (ft2)

Pressure Loss

Width (Inches)

Hei

ght (

Inch

es)

Certified Ratings:Pottorff certifies that themodel ECD-635 shownherein is licensed to bear theAMCA seal. The ratingsshown are based on test andprocedures performed inaccordance with AMCAPublication 511 and complywith the requirements of theAMCA Certified RatingsProgram. The AMCACertified Ratings sealapplies to air performance,water penetration and wind-driven rain ratings.

Class EffectivenessA 1.000 to 0.99B 0.989 to 0.95C 0.949 to 0.80D 0.799 to 0.00

Selection CriteriaFollow the steps listed below to calculate the louver size needed to satisfy therequired air volume while minimizing the adverse effects of water penetration andpressure loss.1. Determine the Free Area Velocity (FAV) at the maximum allowable pressure loss

using the Pressure Loss chart to the left. While job conditions vary, typically, themaximum allowable pressure loss should not exceed 0.15 in.wg., and the FAV for0.15 in.wg. pressure loss is listed on the front page of this sheet.

2. Intake Applications If the FAV at the Beginning Point of Water Penetration(shown below) is less than the FAV from step 1, then use the FAV at the BeginningPoint of Water Penetration in step 3, otherwise use the FAV from step 1.Exhaust Applications Use the FAV from step 1 in step 3.

3. Calculate the total louver square footage required using the following equation.__________ cfm ÷ __________ fpm = __________ ft2

Required FAV Required Louver (Free-Area) Air Volume Size in ft2

4. Using the Free Area chart above, select a louver width and height that yields afree area ft2 greater than or equal to the required louver size calculated in step 3.

Water PenetrationAMCA defines the beginning point of water penetration as the free areavelocity at the intersection of a simple linear regression of test data andthe line of 0.01 ounces of water per square foot of free area and ismeasured through a 48" ¥ 48" louver during a 15 minute period. TheAMCA water penetration test provides a method for comparing louvermodels and designs as to their efficiency in resisting the penetration ofrainfall under specific lab conditions. Pottorff recommends that intakelouvers are selected with a reasonable margin of safety below thebeginning point of water penetration in order to avoid unwantedpenetration during severe storm conditions.

Louver Test Size = 48" x 48" (1219 x 1219)

Wind Velocity29 mph

Rainfall3 in/hr

Airflow1998 cfm

Core Velocity186 fpm

EffectivenessRatio96.6%

WindClass2

B

DischargeClass3

2

Wind Driven Rain2

Class Coefficient1 0.4 to 1.0002 0.3 to 0.3993 0.2 to 0.2994 0.0 to 0.199

Discharge Loss3

Water Penetration Beginning Point of Water Penetration = 1,217 fpm

Pressure loss tested in accordanced with Figure 5.5 of AMCA Standard 500-L

4.5 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 1207 0.01 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.3 0.3 0.3 0.4 0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.6

12 0.1 0.3 0.5 0.6 0.8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2 2.4 2.5 2.7 2.9 3.1 3.2 3.4

18 0.1 0.5 0.9 1.2 1.5 1.8 2.1 2.5 2.8 3.1 3.4 3.7 4.1 4.4 4.7 5.0 5.3 5.7 6.0 6.3

24 0.2 0.8 1.2 1.7 2.2 2.6 3.1 3.6 4.1 4.5 5.0 5.5 5.9 6.4 6.9 7.3 7.8 8.3 8.7 9.2

30 0.3 1.0 1.6 2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.6 7.2 7.8 8.4 9.0 9.6 10.3 10.9 11.5 12.1

36 0.3 1.3 2.0 2.8 3.6 4.3 5.1 5.8 6.6 7.4 8.1 8.9 9.7 10.4 11.2 11.9 12.7 13.5 14.2 15.0

42 0.4 1.5 2.4 3.3 4.2 5.2 6.1 7.0 7.9 8.8 9.7 10.6 11.5 12.4 13.3 14.3 15.2 16.1 17.0 17.9

48 0.4 1.8 2.8 3.9 4.9 6.0 7.0 8.6 9.2 10.2 11.3 12.3 13.4 14.5 15.5 16.6 17.6 18.7 19.7 20.8

54 0.5 2.0 3.2 4.4 5.6 6.8 8.0 9.2 10.4 11.6 12.9 14.1 15.3 16.5 17.7 18.9 20.1 21.3 22.5 23.7

60 0.6 2.3 3.6 5.0 6.3 7.7 9.0 10.4 11.7 13.1 14.4 15.8 17.1 18.5 19.8 21.2 22.5 23.9 25.2 26.6

66 0.6 2.5 4.0 5.5 7.0 8.5 10.0 11.5 13.0 14.5 16.0 17.5 19.0 20.5 22.0 23.5 25.0 26.5 28.0 29.5

72 0.7 2.7 4.4 6.0 7.7 9.3 11.0 12.6 14.3 15.9 17.6 19.2 20.9 22.5 24.2 25.8 27.5 29.1 30.7 32.4

78 0.7 3.0 4.8 6.6 8.4 10.2 12.0 13.8 15.6 17.3 19.1 20.9 22.7 24.5 26.3 28.1 29.9 31.7 33.5 35.3

84 0.8 3.2 5.2 7.1 9.1 11.0 12.9 14.9 16.8 18.8 20.7 22.7 24.6 26.5 28.5 30.4 32.4 34.3 36.3 38.2

90 0.9 3.5 5.6 7.7 9.8 11.8 13.9 16.0 18.1 20.2 22.3 24.4 26.5 28.6 30.6 32.7 34.8 36.9 39.0 41.1

96 0.9 3.7 6.0 8.2 10.4 12.7 14.9 17.1 19.4 21.6 23.9 26.1 28.3 30.6 32.8 35.0 37.3 39.5 41.8 44.0

102 1.0 4.0 6.4 8.7 11.1 13.5 15.9 18.3 20.7 23.0 25.4 27.8 30.2 32.6 35.0 37.4 39.7 42.1 44.5 46.9

108 1.1 4.2 6.8 9.3 11.8 14.3 16.9 19.4 21.9 24.5 27.0 29.5 32.1 34.6 37.1 39.7 42.2 44.7 47.3 49.8

114 1.1 4.5 7.1 9.8 12.5 15.2 17.9 20.5 23.2 25.9 28.6 31.3 33.9 36.6 39.3 42.0 44.7 47.3 50.0 52.7

120 1.2 4.7 7.5 10.4 13.2 16.0 18.8 21.7 24.5 27.3 30.2 33.0 35.8 38.6 41.5 44.3 47.1 49.9 52.8 55.6

(Data corrected to standard air density)