Hvac Air Duct Leakage Test Manual

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Hvac air duct leakage test manual.

Schedule the pressure classes here by fan system num ber or portion thereof if they are not shown on the drawings. 1972 2 nd edition 2012 122 pages. Public domain created date. Potential accuracy of flow measurements should be evaluated.

The hvac air duct leakage test manual has been incorporated by reference and is legally mandated by the united states in title 10 of the code of federal regulations section 434 403 2 9 3. This american national standard ansi smacna 016 2012 covers revised leakage criteria and builds on the proven methods for testing ductwork for air leaks from the first edition. Hvac air duct leakage test manual author. Duct seal class ducts shall be sealed as specified in the hvac dcs.

Duct pressure classes are to be identified on the contract drawings. The hvac air duct leakage test manual has also been incorporated by reference and is required by law in title 19 new york. Contains updates to the expected leakage rates for ductwork constructed to the smacna hvac duct construction standards metal flexible duct leakage test procedures recommendations on use of leakage testing types. Figure 5 1l from the 2012 smacna hvac air duct leakage test manual shows the allowable leakage as a function of duct leakage classification and static pressure in the duct.

Where no specific duct pressure class designations are provided byclass designations are provided by the designer the 1 water gage pressure class is the basis of. This american national standard ansi smacna 016 2012 covers revised leakage criteria and builds on the proven methods for testing ductwork for air leaks from the first edition. Apparent differences of about ten percent between fan delivery and sum of airflow measurements at terminals do not necessarily mean poor sealing and excess leakage. The hvac air duct leakage test manual provides practical and detailed procedures for conducting leakage tests.

Sheet metal and air conditioning contractors national association subject. Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required. Hvac air duct leakage test manual second edition 2012 sheet metal and air conditioning contractors national association inc. Representative sections totaling no less than 25.

Law in 10 cfr 434 403 2 9 3 keywords. Ductwork that is designed to operate at static pressures in excess of 3 inches water column 0 75 kpa and all ductwork located outdoors shall be leak tested according to the ansi smacna hvac air duct leakage test manual.