Duct leakage test report.
Duct leakage test form.
Pressure testing ducts as required by the 2009 iecc is far superior to visual inspection and will definitively confirm that duct leakage is kept to a low level.
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.
Here is an example.
The system will need to achieve a leakage rate of less than 4 cfm cubic feet per minute per 100 square feet of the home.
Ducts located in crawl spaces do not qualify for this exception.
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.
Instructions click here save download the file open using adobe reader enter your orifice plate data using your calibration certificates.
Air handler in conditioned space.
If different from above street.
Yes no air handler present during test.
A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a pressure sensing device to measure the pressure created by the fan flow.
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Building energy codes program experts estimate that pressure testing ducts in new residential construction will reduce energy consumption in new homes by up to 10 on.
The total leakage test is not required for ducts and air handlers located entirely within the building thermal envelope.
Yes no circle test method.
A duct leakage test duct testing can be performed at rough in before drywalling or post construction.
Test apparatustest apparatus duct leakage test system consists of duct leakage test system consists of.
Total duct leakage less than or equal to 6 cfm 18 l min per 100 ft 2 9 29 m2 of conditioned floor area served by that system when tested at a pressure differential of 0 1 inches w g.
25 pa across the entire system including the manufacturer s air handler enclosure.
Duct tightness shall be verified as follows.
Use this adobe pdf form for calculating allowable leakage cfm based on percent allowable input.
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In both cases the requirements are the same.
It calculates duct surface area measured system leakage rate and pass fail criteria.
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Example blank form duct leakage test form customer information.
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