Resolving Common Problems with Developing Louver Catalogs

2 Table of Contents  Purpose Purpose  Free Area Chart Free Area Chart  Air Performance Rating Air Performance Rating  Water Penetration Rating Water Penetration Rating  Wind-Driven Rain Rating Wind-Driven Rain Rating  Sound Performance Rating Sound Performance Rating  Catalog Identification Catalog Identification  Seals and Statement Seals and Statement  Resource and Contact Resource and Contact

3 Purpose  Help manufacturers develop the catalogs  Reduce catalog checking time

4 Free Area Chart

5 Horizontal Blade Louver Dimension A = Minimum distance between the head and top blade B = Minimum distance between the sill and bottom blade C = Minimum distance between adjacent blades N = Number of C openings L = Minimum distance between louver jambs W = louver width H = louver height

6 Vertical Blade Louver Dimension A = Minimum distance between the left jamb and left blade B = Minimum distance between the right jamb and right blade C = Minimum distance between adjacent blades N = Number of C openings L = Minimum distance between louver head and sill W = Louver width H = Louver height

7 Free Area Calculation

Ref: AMCA (Rev ) Section Louver catalog has to have a Free Area Chart. The maximum increment can not be more than 305 mm (12 in). Free Area Chart Typical Free Area Chart

9 Air Performance

Ref: AMCA (Rev ) Section Air Performance Ratings Air performance ratings have to include the following data:  Maximum pressure drop (ΔPs)  Flow direction intake and/or exhaust

Ref: AMCA (Rev ) Section Air Performance Ratings Following statements have to be in the catalog:  “Data corrected to standard air density”  AMCA figure or figures in which air performance was tested  Test sample size

12 Drawing the Graph Test Report Approved Catalog The line was plotted based on this data.

13 Test Mode (Flow Direction) in the Graph Test ReportApproved Catalog

14 Figure No. in the Graph Test Report Approved Catalog

IP unit Pressure drop ≥ 0.01 in w.g. Data shall be rounded to maximum of two digits after the decimal point Pressure drop ≤ 0.01 in w.g. Data shall be rounded to maximum of three digits after the decimal point Ref. AMCA (Rev ) Section Rounding of data for y-axis Free Area Velocity Pressure Drop fpmin wg Free Area Velocity Pressure Drop fpmin wg Wrong Right

SI unit Pressure drop ≥ 1 Pa Data shall be rounded to nearest Pascal Pressure drop ≤ 1 Pa Data shall be rounded to one digit after the decimal point Ref. AMCA (Rev ) Section Rounding of data for y-axis Free Area Velocity Pressure Drop (m/s)(Pa) Free Area Velocity Pressure Drop (m/s)(Pa) Wrong Right

17 Extrapolation  The air performance curve can be extrapolated with broken line with smooth continuation of the adjacent portion.  The extrapolation shall not be more than 50% of the static pressure range of the test either upwards of downwards.

Ref. AMCA (Rev ) Section Extrapolation Example The air performance curve can be extrapolated with broken line with smooth continuation of the adjacent portion. The extrapolation shall not be more than 50% of the static pressure range of the test either upwards of downwards. Example: According to the test report below, static pressure drop varies 0.023” to 0.409”. The curve can be extrapolated to ( )/2 = 0.193” more than 0.409”. The line can be extended to 0.409” ” = 0.602”. Approved Catalog

19 Water Penetration

Ref. AMCA (Rev ): Section Water Penetration The Beginning point of water penetration (3.05 g/m 2 or 0.01 oz/ft 2 ) is defined as the free area velocity at which water begins to pass through the louver. It shall be in form of statement. Example: The beginning point of water penetration for Model ABC 007 is 913 fpm free area velocity.

Ref. AMCA (Rev ): Section Water Penetration Curve Published ratings may be shown as a curve of water penetration in accordance with the regression formula. Approved Catalog

Ref. AMCA (Rev ): Section Ordinate of Water Penetration Curve Ordinate (y-axis): The ordinate shall be from 0 to 100 mL (0 to 0.3 oz) of water penetration m 2 (ft 2 ) free area. Approved Catalog

Ref. AMCA (Rev ): Section Abscissa of Water Penetration Curve The minimum abscissa velocity shall start on an even 0.5m/s (100 fpm) more than 0.3 m/s (60 fpm) below the velocity at the beginning of water penetration. For example, the beginning point of water penetration is 961 fpm =901 The minimum abscissa velocity shall start on 900 fpm. But if the beginning point of water penetration is 951 fpm, the minimum abscissa velocity shall start on 800 fpm. Approved Catalog

AMCA (Rev ): Section The beginning point of water penetration curve The starting point of water penetration curve shall be marked and/or labelled. Approved Catalog

Ref. AMCA (Rev : Section Louver Information in Water Penetration Curve The Louver test size and test duration shall be included on the published results of each catalog series. Approved Catalog

26 Beginning Point of Water Penetration in the Graph Approved Catalog Test Report

27 Wind Driven Rain

Ref. AMCA (Rev ): Section Wind-Driven Rain Published rating shall include the following:  Wind velocity  Rainfall rate  Core velocity  Effectiveness  Penetration class  Discharge loss Approved Catalog

29 WDR Data from Test Report Approved CatalogTest Report

30 Sound Performance for Acoustical Louver

Ref. AMCA (Rev ): Section Sound Performance Rating Requirement Acoustical ratings shall be as free field noise reduction (dB) in the 2nd through 7th octave bands. Example from Approved Catalog

32 Sound Transmission Loss Approved CatalogTest Report

33 Sound Performance Data Approved Catalog Test Report

34 Catalog Identification

Ref. AMCA (Rev ): Section Catalog Identification  Catalog identification reference (e.g. Catalog No. XXX Rev. 1), and unabbreviated current catalog date, (e.g. November 2004) shall be on the outside front or back cover.  Where ratings are on separate sheets or on loose leaf that may be removed from the cover, each sheet or loose leaf shall be identified and dated as above. Approved Catalog

36 Seal and Statements

Ref. AMCA (Rev ) Section 5.1 and Section Qualifying Statement “(Licensee's name as shown on License Agreement) certifies that the (product description) shown herein is (or 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.” ABC Corporation certifies that Models AB707; UA777 and AA631 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 water penetration, air performance and wind- driven rain.

Ref. AMCA (Rev ) Section Other Statements  The qualifying statement shall be shown on the inside cover or first page, or prominently on a subsequent page.  Please indicate which products are licensed, and on what pages the certified ratings are shown.  If the catalog contains all licensed products, the seal and qualifying statement shall be prominently displayed either on the cover or in the catalog.  If the catalog contains both licensed and unlicensed products, the AMCA Seal and qualifying statement shall not be shown on the outside cover.

39 Resource AMCA Publication (Rev ) Certified Ratings Program Product Rating Manual for Air Control Devices AMCA Publication (R2008) (Rev. 10/13) Certified Ratings Program Operating Manual