EHH-501
Wind-Driven Rain Louver
Horizontal Blade
Application and Design
EHH-501 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-501 is an AMCA CERTIFIED LOUVER enabling designers to select and apply with confidence.
Standard Construction
Frame Heavy gauge extruded 6063-T5 aluminum, 5 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
Sil Pan 0.063 formed aluminum Minimum Size 12 in. W x 7 in. H
Maximum Single
Section Size 120 in. W or 120 in. H (limited to 70 ft. sq.)
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.
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WATER |
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PENETRATION |
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AIR |
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PERFORMANCE |
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WIND |
AIR |
DRIVEN RAIN |
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MOVEMENT AND CONTROL ASSOCIATION
INTERNATIONAL, INC.®
PERFORMANCE DATA |
EHH-501 |
Wind-Driven Rain Performance
Wind-Driven Rain Louver
Extruded Aluminum
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75 mm/h (3 in./hr) Rainfall & |
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202 mm/h (8 in./hr) Rainfall & |
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13 m/s (29 mph) Wind Velocity |
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22 m/s (50 mph) Wind Velocity |
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Free Area |
Ventilation Air |
Water |
Free Area |
Ventilation Air |
Water |
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Velocity |
Core Velocity |
Penetration |
Velocity |
Core Velocity |
Penetration |
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(fpm) |
(m/s) |
(fpm) |
(m/s) |
Class |
Effective |
(fpm) |
(m/s) |
(fpm) |
(m/s) |
Class |
Effective |
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0 |
0 |
0 |
0 |
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0 |
0 |
0 |
0 |
B |
98.5 |
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198 |
1.0 |
98 |
0.5 |
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278 |
1.4 |
138 |
0.7 |
B |
98.1 |
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397 |
2.0 |
197 |
1.0 |
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419 |
2.1 |
208 |
1.1 |
B |
97.8 |
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595 |
3.0 |
295 |
1.5 |
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587 |
3.0 |
291 |
1.5 |
B |
97.4 |
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794 |
4.0 |
394 |
2.0 |
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837 |
4.3 |
415 |
2.1 |
B |
97.8 |
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992 |
5.0 |
492 |
2.5 |
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978 |
5.0 |
485 |
2.5 |
B |
98.2 |
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1192 |
6.1 |
591 |
3.0 |
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1185 |
6.0 |
588 |
3.0 |
B |
98.4 |
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1355 |
6.9 |
672 |
3.4 |
A |
99.9 |
1343 |
6.8 |
666 |
3.4 |
B |
98.0 |
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1585 |
8.1 |
786 |
4.0 |
A |
99.5 |
1569 |
8.0 |
778 |
4.0 |
B |
97.5 |
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1766 |
9.0 |
876 |
4.5 |
A |
99.3 |
1766 |
9.0 |
876 |
4.5 |
B |
96.4 |
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2016 |
10.2 |
1000 |
5.1 |
B |
98.7 |
1986 |
10.1 |
985 |
5.0 |
C |
93.8 |
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Discharge Loss Coefficient Class (Intake) = 2
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.
Discharge Loss Coefficient Classifications
Class |
Discharge Loss Coefficient |
10.4 and Above
20.3 to 0.399
30.2 to 0.299
40.199 and Below
Wind-driven Rain
Penetration Classes
Class Effectiveness
A1 to 0.99
B0.989 to 0.95
C 0.949 to 0.80
D Below 0.80
Greenheck Fan Corporation
certifies that the EHH-501
louvers shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply 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.
Airflow Resistance (Standard Air - .075 lb/ft3) |
Water Penetration |
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Pa |
in. wg |
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Test Size 48 in. x 48 in. Test Duration of 15 min. |
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ml/m2 |
oz/ft2 |
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1 |
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200 |
0.9 |
Test Size 48 in. x 48 in. |
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0.30 |
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0.8 |
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0.7 |
Standard Air - .075 lb/ft |
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3 |
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Test Size 48 in. x 48 in. |
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0.6 |
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80 |
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Test Period 15 minutes |
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0.5 |
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0.25 |
Standard Air - .075 lb/ft3 |
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100 |
0.4 |
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Area |
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90 |
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80 |
0.3 |
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0.20 |
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70 |
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Free |
60 |
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60 |
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Exhaust |
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StaticPressureDrop |
50 |
0.2 |
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take |
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PenetrationperUnit |
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0.15 |
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40 |
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In |
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40 |
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30 |
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0.1 |
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0.10 |
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0.09 |
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20 |
0.08 |
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0.07 |
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20 |
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0.06 |
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0.05 |
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0.05 |
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Water |
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10 |
0.04 |
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0 |
0.00 |
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9 |
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8 |
0.03 |
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ft/min: 1100 |
1150 |
1200 |
1250 |
1300 |
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7 |
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6 |
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m/s: |
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5 |
0.02 |
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6.5 |
7.0 |
7.5 |
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Free Area Velocity |
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ft/min: 200 |
300 |
400 500 |
600 700 800 900 1000 |
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2000 |
3000 |
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m/s: |
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The AMCA Water Penetration Test provides a method for comparing |
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2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 10 |
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various louver models and designs as to their efficiency in resisting |
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Free Air Velocity |
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the penetration of rainfall under specific laboratory test conditions. |
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The beginning point of water penetration is defined as that velocity |
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Model EHH-501 resistance to airflow (pressure drop) varies |
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where the water penetration curve projects through 0.01 oz. of water |
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(penetration) per sq. ft. of louver free area. *The beginning point of |
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depending on louver application (air intake or air exhaust). |
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water penetration for Model EHH-501 is above 1250 fpm free area |
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Free area velocities (shown) are higher than average |
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velocity. These performance ratings do not guarantee a louver to be |
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velocity through the overall louver size. See louver selection |
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weather-proof or stormproof and should be used in combination with other |
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information. |
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factors including good engineering judgement in selecting louvers. |
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