Greenheck EVH-401 Installation Manual

Wind-Driven Rain Louver

Vertical Blade

Application and Design

EVH-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 vertical rain resistant blades to provide maximum resistance to wind driven rain in even the most extreme weather conditions. The EVH-401 is an AMCA CERTIFIED LOUVER 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 � � � � � � � � �Vertical rain resistant style, heavy gauge

extruded 6063-T5 aluminum, 0.081 in. nominal wall thickness, positioned on approximately 1.5 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 12 in. H

Maximum Single Section Size � � � �60 in. W x 96 in. H

EVH-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.

Static Pressure Drop

Wind-Driven Rain Performance

EVH-401PERFORMANCE DATA

Wind-Driven Rain Louver

Extruded Aluminum

75mm/h (3 in/hr) Rainfall & 13 m/s

(29 mph) Wind Velocity

Ventilation Air

Core Velocity

m/s (fpm)

0.0 (0) A 0.0 (0) A

0.5 (98) A 0.5 (98) A

1.0 (197) A 1.0 (197) A

1.5 (295) A 1.5 (295) A

2.0 (394) A 1.9 (365) 99.9 A

2.5 (492) A 2.4 (473) 99.9 A

3.0 (591) A 2.9 (570) 99.7 A

3.4 (673) 100.0 A 3.5 (694) 98.8 B

Water Penetration

Effectiveness

Water Penetration

Classiﬁcation

Ventilation Air

Core Velocity

m/s (fpm)

200mm/h (8 in/hr) Rainfall & 22 m/s

(50 mph) Wind Velocity

Water Penetration

Effectiveness

Water Penetration

Classiﬁcation

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

in. wg

0.9

200

100

90 80

0.09

0.08

0.07

0.06

0.05

0.04

9 8

0.03

0.02

ft/min:

m/s:

Test Size 48 in. x 48 in.

0.8

Standard Air - .075 lb/ft

0.7

0.6

0.5

0.4

0.3

0.2

0.1

200 300 400 500 600 700 800 900 1000 2000 3000

Intake

Exhaust

2345678910

Free Air Velocity

)

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:

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

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

Model EVH-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.

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

water penetration for Model EVH-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.

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

Greenheck Fan Corporation certifies that

the EVH-401 louvers shown herein are

licensed to bear the AMCA Seal. The

ratings shown are based on tests and

WATER

PENETRATION

PERFORMANCE

DRIVEN RAIN

AIR MOVEMENT AND CONTROL ASSOCIATION INTERNATIONAL, INC.

procedures performed in accordance

AIR

with AMCA Publication 511 and comply

WIND

with the requirements of the AMCA Certified Ratings Program. The AMCA Certified Ratings Seal applies to air

performance, water penetration, and wind-driven rain ratings.

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

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