Greenheck EHH-401 Installation Manual

EHH-401

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.)

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.

	WATER
	PENETRATION
	AIR
	PERFORMANCE
	WIND
AIR	DRIVEN RAIN

MOVEMENT AND CONTROL ASSOCIATION

INTERNATIONAL, INC.®

penetration,

MOVEMENT AND CONTROL ASSOCIATION

INTERNATIONAL, INC.®

WATER

PENETRATION

AIR

PERFORMANCE

WIND

DRIVEN RAIN

AIR

PERFORMANCE DATA

EHH-401

Wind-Driven Rain Performance

Wind-Driven Rain Louver

Extruded Aluminum

	75 mm/h (3 in./hr) Rainfall &						202 mm/h (8 in./hr) Rainfall &
	13 m/s (29 mph) Wind Velocity						22 m/s (50 mph) Wind Velocity
Free Area		Ventilation Air		Water		Free Area		Ventilation Air		Water
Velocity		Core Velocity		Penetration		Velocity		Core Velocity		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
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

Discharge Loss Coefficient Class (Intake) = 3

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-401 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

and wind-driven rain ratings.

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/ft3)

Static Pressure Drop

Pa

in. wg

1

0.9

2000.8

0.7

0.6

0.5

	100		0.4
	90
	80	0.3
	70
	60
	50	0.2
	40
	30
		0.1
		0.09
	20	0.08
		0.07
		0.06
		0.05
	10		0.04
	9
	8	0.03
	7
	6

5 0.02 ft/min: 200

m/s:

Test Size 48 in. x 48 in.

Standard Air - .075 lb/ft3

Intake

Exhaust

300	400	500 600 7008009001000						2000		3000
	2	3	4	5	6	7	8	9 10

Free Air 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.

Water Penetration

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

ml/m2

oz/ft2

0.30

Test Size 48 in. x 48 in.

80

0.25

Test Period 15 minutes

Standard Air - .075 lb/ft3

Area		0.20
Free	60
Unit		0.15
per	40
Penetration	20	0.10
		0.05
Water	0		0.00
		ft/min: 1100					1150				1200				1250		1300
			m/s:
							6.5				7.0				7.5
											Free Area Velocity

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 (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.