Hvac Duct Smoke Test Procedure

Representative sections totaling no less than 25 10 percent of the total installed duct area for that designated pressure classshall be tested.

Hvac duct smoke test procedure.

Smoke generator test system. Hvac smoke testing with superior smoke smoke testing effectively and inexpensively reveals leaks and other faults in heat ing and air conditioning duct work. Portable smoke tester is connected to the supply and return sections of the duct work. The only time duct testing is required is when parts of the hvac system are outside of the conditioned envelope.

And all connections between the flowmeter and the duct for all sensible leaks. Please click the red subscribe button or here. Ansi smacna hvac air duct leakage test manual. Cid iconsiderations maximize.

Leakage test procedures shall follow the outlines and classifications in the smacna hvac duct leakage. The superior method of generating smoke by chemical reaction eliminates costly equipment and time consuming operations in pinpointing hvac leaks. Smacna hvac air duct leakagg e test manual first edition 1985 ashrae 90 1 proposed. If necessary apply a soap solution to locate small leaks.

Yes if the duct detector cannot be. This means that when we measure say 120 cubic feet per minute of duct leakage at 25 pascals written 120 cfm25 that number is a pretty good estimate of how much air leaks out of the duct system while it s. Flow rangeflow range. If any supply or return duct chases flexible lines or air handler units are in these areas by iecc 2015 code a duct leakage test is required.

Hvac air duct leakage test manual. A smoke bomb test may be used to identify actual leak sources. Test proceduretest procedure 1 select duct section for testing 2 measure and calculate duct surface area 3 pg p seal all openings except one. This includes areas like unconditioned attics garages and crawlspaces.

For duct leakage testing the standard pressure used is 25 pascals which is close to the operating pressure of a typical duct system.