Sheet metal and air conditioning contractors national association.
Smacna air duct leakage test manual pdf.
Mcgill airflow receives many inquiries each year from contractors who are performing leak tests in the fi eld.
Th is table is not an allowable leakage specifi cation but is often used as one.
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.
4 1 on page 4 3 in the 1985 smacna hvac air duct leakage test manual and table 1 1 on page 1 11 in the 2005 smacna hvac duct construction standards.
Handbook manual guide by sheet metal and air conditioning contractors national association 2012.
Duct leakage class consult the hvac air duct leakage test manual and.
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.
Hvac air duct leakage test manual rs 35 10 cfr 434 403 2 9 3 sheet metal and air conditioning contractors national association smacna approved.
Duct pressure classes are to be identified on the contract drawings.
Duct seal class ducts shall be sealed as specified in the hvac dcs.
Hvac air duct leakage test manual author.
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Hvac air duct leakage test manual sheet metal and air conditioning contractors national association inc.
Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required.
Smacna 016 2012 hvac air duct leakage test manual 2nd edition.
Representative sections totaling no less than 25.
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Schedule the pressure classes here by fan system num ber or portion thereof if they are not shown on the drawings.
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.
When the designer has only required leakage tests to be conducted in accordance with the smacna hvac air duct leakage test manual for verification that the leakage classifications in table 1 have been met and has given no other criteria and scope he is deemed to have not fulfilled the responsibilities outlined in section 2 1 for providing a.