Smacna leakage class use this adobe pdf form for calculating allowable leakage cfm based on smacna leakage class.
Duct leakage test sheet.
If the test is at 6 static pressure for leakage class 3 compliance i e 9 6 cfm per 100 s f with 6 orifice differential and 6 duct test pressure the meter could only indicate 24 cfm.
Percent allowable use this adobe pdf form for calculating allowable leakage cfm based on percent allowable input.
Duct leakage test form customer information.
Oriflow duct leakage test sheet.
However the blower for the test apparatus would have to produce 24 cfm at 10 to 12 static.
Oriflow duct leakage test sheet.
It calculates duct surface area measured system leakage rate and pass fail criteria.
Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required.
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.
Primary location of supply.