Duct Leakage Test Manual

7 4 duct leakage reporting procedure.

Duct leakage test manual.

1972 2 nd edition 2012 122 pages. Smacna first published a procedure for leakage testing of so called medium and high pressure ductwork since january 1965. Leakage test procedures shall follow the outlines and classifications in the smacna hvac duct leakage test manual. If specimen fails to meet allotted leakage level the contractor shall modify to bring it into compliance and shall retest it until acceptable leakage is demonstrated.

Includes a new educational chapter. B 2 system leakage classification analysis. C 1 leakage rate. Quote fromquote from hvac air duct leakage testhvac air duct leakage test manual smacna.

With better sealing methods developed the 2012 edition of the hvac air duct leakage manual. The research also led to the development of the smacna hvac air duct leakage test manual 1st edition 1985 and the leakage class followed by the smacna hvac air duct leakage test manual 2nd edition 2012. Duct liner metal nosing shall be used on leading edges of each piece of lined duct when the velocity exceeds 4000 fpm. Hvac air duct leakage test manual order no.

B 1 sample leakage analysis. Hvac air duct leakage test manualwith the rate of air leakage cl less than or equal to 6 0 as determined in accordance with equation 4 5. 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. 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 of test apparatus and test setup and sample leakage analysis.

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. Duct leakage class consult the hvac air duct leakage test manual and select appropriate allowable leakage. 6 1 duct leakage testing apparatus. Cl f p0 65 equation 4 5 where.

P the static pressure of the test. 7 1 duct leakage test report details. 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.

F the measured leakage rate in cfm per 100 square feet of duct surface.