Test apparatustest apparatus duct leakage test system consists of duct leakage test system consists of.
Duct leakage test sheet.
Duct leakage test form customer information.
If different from above street.
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.
However the blower for the test apparatus would have to produce 24 cfm at 10 to 12 static.
Smacna leakage class use this adobe pdf form for calculating allowable leakage cfm based on smacna leakage class.
Oriflow 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.
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.
It calculates duct surface area measured system leakage rate and pass fail criteria.
It calculates duct surface area measured system leakage rate and pass fail criteria.
Percent allowable use this adobe pdf form for calculating allowable leakage cfm based on percent allowable input.