Smacna Air Leakage Test Manual

This article discusses the history of duct air leak testing and describes proper techniques and practical application when leak testing is performed in accordance with the sheet metal and air conditioning contractors national association smacna standards.

Smacna air leakage test manual.

News smacna s technical roadshow goes to hawaii. 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. 1972 2 nd edition 2012 122 pages. Cl f p0 65 equation 4 5 where.

Quote fromquote from hvac air duct leakage testhvac air duct leakage test manual smacna. Representative sections totaling no less than 25 10 percent of the total installed duct area for that designated pressure classshall be tested. Sheet metal and air conditioning contractors national association 4201 lafayette center drive chantilly virginia 20151 1219 tel 703 803 2980 fax 703 803 3732. F the measured leakage rate in cfm per 100 square feet of duct surface.

Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required. Ansi smacna hvac air duct leakage test manual. In addition ducts and plenums shall be leak tested in accordance with the smacna hvac air duct leakage test manual with the rate of air leakage cl less than or equal to 6 0 as determined in accordance with equation 4 5. Click here to purchase the full version from the ansi store.

Smacna first published a procedure for leakage testing of so called medium and high pressure ductwork since january 1965. Hvac air duct leakage test manual order no. 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. It appeared in chapter 10 of the high velocity later high pressure construction standards and in chapter 8 of the balancing and adjustment of air distribution systems manual of 1967 vintage.

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.