Duct Leakage Test

Total leakage measured with a pressure differential of 0 1 inch w g.

Duct leakage test.

Total leakage measured with a pressure differential of 0 1 inch w g. Both the 2009 and 2012 iecc require duct tightness to be verified. Ducts shall be pressure tested to determine air leakage by either of the following. Verification can take place via either a post construction test or a rough in test.

Test apparatustest apparatus duct leakage test system consists of duct leakage test system consists of. A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating ventilating and air conditioning hvac ductwork. For the post construction test leakage measurement must be made across the entire system including the manufacturer s air handler enclosure with all register boots taped or sealed at a test pressure of 0 1 inches w g. Leakage test procedures shall follow the outlines and classifications in the smacna hvac duct leakage test manual.

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. Use a calibrated fan to pressurize the duct system. 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. Measure the airflow through the fan with the duct system at pressure.

25 pa across the system including.