To ensure that smoke testing is adequately implemented the following protocol has been established and should not be deviated from.
Hvac duct smoke test procedure.
And all connections between the flowmeter and the duct for all sensible leaks.
Hvac smoke testing with superior smoke smoke testing effectively and inexpensively reveals leaks and other faults in heat ing and air conditioning duct work.
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.
Yes if the duct detector cannot be.
A smoke bomb test may be used to identify actual leak sources.
If necessary apply a soap solution to locate small leaks.
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.
For duct leakage testing the standard pressure used is 25 pascals which is close to the operating pressure of a typical duct system.
Ansi smacna hvac air duct leakage test manual.
If i supply the duct smoke detector power it and connect it to the fire alarm system does the hvac contractor still need to install a remote test station.
Flow rangeflow range.
Smoke generator test system.
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Representative sections totaling no less than 25 10 percent of the total installed duct area for that designated pressure classshall be tested.
This includes areas like unconditioned attics garages and crawlspaces.
Hvac air duct leakage test manual.
Test proceduretest procedure 1 select duct section for testing 2 measure and calculate duct surface area 3 pg p seal all openings except one.
Portable smoke tester is connected to the supply and return sections of the duct work.
The superior method of generating smoke by chemical reaction eliminates costly equipment and time consuming operations in pinpointing hvac leaks.
Leakage test procedures shall follow the outlines and classifications in the smacna hvac duct leakage.
All boots are temporarily sealed by either the ac contractor or authorized smoke testing personnel.
