Duct Leakage Test Sheet

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.

Duct leakage test sheet.

Test apparatustest apparatus duct leakage test system consists of duct leakage test system consists of. It calculates duct surface area measured system leakage rate and pass fail criteria. Primary location of supply. Oriflow duct leakage test sheet.

Duct leakage test form customer information. Smacna leakage class use this adobe pdf form for calculating allowable leakage cfm based on smacna leakage class. Oriflow duct leakage test sheet. Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required.

However the blower for the test apparatus would have to produce 24 cfm at 10 to 12 static. 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. 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.