Greenheck EHH-401 Installation Manual

Wind-Driven Rain Louver

Horizontal Blade

Application and Design

EHH-401 is a Wind-Driven Rain louver designed to protect air intake and exhaust openings in building exterior walls that are sensitive to direct water penetration. Design incorporates a drainable head member and horizontal rain resistant blades to provide maximum resistance to wind driven rain in even the most extreme weather conditions. The EHH-401 is an extremely efficient louver with AMCA LICENSED PERFORMANCE DATA enabling designers to select and apply with confidence.

Standard Construction

Frame � � � � � � � � �Heavy gauge extruded 6063-T5 aluminum,

4 in. x 0.081 in. nominal wall thickness

Blades � � � � � � � � �Horizontal rain resistant style, heavy gauge

extruded 6063-T5 aluminum, 0.081 in. nominal wall thickness, positioned on approximately 2 in. blade spacing

Construction . . . .Mechanically fastened

Birdscreen � � � � � �3/4 in. x 0.051 in. ﬂattened expanded

aluminum in removable frame, inside mount (rear)

Finish � � � � � � � � � �Mill

Sill Pan � � � � � � � �0.063 formed aluminum

Minimum Size � � �12 in. W x 6 in. H

Maximum Single Section Size � � � �120 in. W or 120 in. H (limited to 70 ft. sq.)

EHH-401

WATER

PENETRATION

AIR

PERFORMANCE

WIND

DRIVEN RAIN

AIR MOVEMENT AND CONTROL ASSOCIATION INTERNATIONAL, INC.

Options (at additional cost)

• A variety of bird and insect screens

• Blank-off panel

• Clip angles

• Filter rack

• Flanged frame (head and jamb only)

• Security bars

• A variety of architectural finishes including: Clear anodize

Integral color anodize Baked enamel Kynar

*Width and height dimensions furnished

approximately ¼ inch under size.

Wind-Driven Rain Performance

EHH-401PERFORMANCE DATA

Wind-Driven Rain Louver

Extruded Aluminum

75 mm/h (3 in./hr) Rainfall &

13 m/s (29 mph) Wind Velocity

Free Area

Velocity

Ventilation Air

Core Velocity

Water

Penetration

202 mm/h (8 in./hr) Rainfall &

22 m/s (50 mph) Wind Velocity

Free Area

Velocity

Ventilation Air

Core Velocity

Water

Penetration

(fpm) (m/s) (fpm) (m/s) Class Effective (fpm) (m/s) (fpm) (m/s) Class Effective

0 0 0 0 0 0 0 0 B 98.9

208 1.1 98 0.5 295 1.5 139 0.7 B 98.7

Discharge Loss Coefcient Classications

Class Discharge Loss Coefcient

1 0.4 and Above Class Effectiveness

2 0.3 to 0.399 A 1 to 0.99

3 0.2 to 0.299 B 0.989 to 0.95

4 0.199 and Below C 0.949 to 0.80

Wind-driven Rain

Penetration Classes

D Below 0.80

443 2.3 209 1.1 A 99.6 399 2.0 188 1.0 B 98.7

615 3.1 290 1.5 A 99.4 621 3.2 293 1.5 B 98.5

833 4.2 393 2.0 A 99.1 821 4.2 387 2.0 B 98.5

1022 5.2 482 2.4 B 98.5 1026 5.2 484 2.5 B 98.1

1241 6.3 585 3.0 B 98.1 1213 6.2 572 2.9 B 98.3

1451 7.4 684 3.5 C 94.6 1434 7.3 676 3.4 B 97.1

1607 8.2 758 3.9 C 91.0 1635 8.3 771 3.9 B 95.3

1841 9.4 868 4.4 C 81.5 1822 9.3 859 4.4 C 92.4

2091 10.6 986 5.0 D 70.4 1995 10.1 941 4.8 C 83.3

PENETRATION

PERFORMANCE

DRIVEN RAIN

AIR MOVEMENT AND CONTROL ASSOCIATION INTERNATIONAL, INC.

penetration, and wind-driven rain ratings.

Greenheck Fan Corporation certifies

that the EHH-401 louvers shown

herein are licensed to bear the AMCA Seal. The ratings shown are based on

WATER

tests and procedures performed in

AIR

accordance with AMCA Publication

WIND

511 and comply with the requirements

of the AMCA Certified Ratings Program. The AMCA Certified Ratings

Seal applies to air performance, water

Discharge Loss Coefﬁcient Class (Intake) = 3

Weather louvers shall be classified by their ability to reject simulated rain. The table shows different classifications based on the maximum simulated rain penetration per square meter (square feet) of louver. Water penetration rating at a given louver face velocity is determined by the water penetration while the louver is subjected to a selected simulated rainfall rate and wind velocity.

Airflow Resistance (Standard Air - �075 lb/ft

)

Water Penetration

Test Size 48 in� x 48 in� Test Duration of 15 min�

ml/m2

Water Penetration per Unit Free Area

ft/min:

m/s:

oz/ft2

0.30

Test Size 48 in. x 48 in.

0.25

0.20

0.15

0.10

0.05

0.00

Test Period 15 minutes

Standard Air - .075 lb/ft

1100 1150 1200 1250 1300

6.5 7.0 7.5

Free Area Velocity

in. wg

0.9

200

0.8

0.7

0.6

0.5

100

0.4

90 80

0.3

0.2

0.1

0.09

0.08

0.07

Static Pressure Drop

0.06

0.05

0.04

9 8

0.03

0.02

200 300 400 500 600 700 8009001000 2000 3000

ft/min:

m/s:

Test Size 48 in. x 48 in.

Standard Air - .075 lb/ft

2345678910

Free Air Velocity

Intake

Exhaust

The AMCA Water Penetration Test provides a method for comparing

various louver models and designs as to their efficiency in resisting the penetration of rainfall under specific laboratory test conditions.

The beginning point of water penetration is defined as that velocity Model EHH-401 resistance to airflow (pressure drop) varies depending on louver application (air intake or air exhaust).

Free area velocities (shown) are higher than average velocity through the overall louver size. See louver selection

information.

where the water penetration curve projects through 0.01 oz. of water

(penetration) per sq. ft. of louver free area. *The beginning point of

water penetration for Model EHH-401 is above 1250 fpm free

area velocity. These performance ratings do not guarantee a louver

to be weather-proof or stormproof and should be used in combination

with other factors including good engineering judgement in selecting

louvers.

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