Hvac Air Duct Leakage Test Manual

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.

Hvac air duct leakage test manual.

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. 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. It is table 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. Representative sections totaling no less than 25.

Hvac air duct leakage test manual order no. 1 blower with speed control vfd to generate range of pressure flowrange of pressure flow 2 flow measuring devices flow grid flow station high flow flow grid flow station high flow orifice plate low flow. Test apparatustest apparatus duct leakage test system consists of duct leakage test system consists of. Potential accuracy of flow measurements should be evaluated.

Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required. Includes a new educational chapter. Smacna first published a procedure for leakage testing of so called medium and high pressure ductwork since january 1965. 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.

Hvac air duct leakage test manual rs 35 10 cfr 434 403 2 9 3 sheet metal and air conditioning contractors national association smacna. Th is table is not an allowable leakage specifi cation but is often used as one. 1972 2 nd edition 2012 122 pages. 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.

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.