ASHRAE 120 2017

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ASHRAE Standard 120-2017 * Method of Testing the Determine Flow Resistance of HVAC Ducts and Fittings (ANSI/ASHRAE Approved)

Published By	Publication Date	Number of Pages
ASHRAE	2017	56

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Description

Standard 120 establishes uniform methods of laboratory testing of HVAC ducts and fittings to determine their resistance to airflow. This 2017 revision of the standard increases the length upstream of the test duct or fitting from 10 to 15 hydraulic diameters.

PDF Catalog

PDF Pages	PDF Title
1	ANSI/ASHRAE Standard 120-2017
3	CONTENTS
4	FOREWORD 1. PURPOSE 2. SCOPE 3. DEFINITIONS, SYMBOLS, AND SUBSCRIPTS
5	4. COMPLIANCE REQUIREMENTS 5. APPLICABILITY 6. INSTRUMENTATION
8	7. FLOW MEASURING SYSTEMS AND TEST SETUPS
10	8. OBSERVATIONS AND CONDUCT OF TEST
11	9. CALCULATIONS
15	10. TEST RESULTS AND REPORT 11. REFERENCES
35	INFORMATIVE ANNEX A—TIME-WEIGHTED AVERAGE
37	INFORMATIVE ANNEX B—LEAKAGE MEASUREMENT
43	INFORMATIVE ANNEX C—FLEXIBLE DUCT TEST SETUP GUIDE
47	INFORMATIVE ANNEX D—EXAMPLE TEST SYSTEMS

Additional information

Standard Title	ASHRAE Standard 120-2017 * Method of Testing the Determine Flow Resistance of HVAC Ducts and Fittings (ANSI/ASHRAE Approved)
Published Code	ASHRAE
Publication Date	2017
Pages Count	56

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ASHRAE 120 2017

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