Duct Leakage Test Results

Test to as a leakage speciﬁ cation. A duct leakage test duct testing can be performed at rough in before drywalling or post construction. Available for pc ios and android.

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The test results shall be provided to the building official and the homeowner.

Duct leakage test results.

Rough in test less than 4 cfm per 100 sq ft which for my house is about 160 cfm if the air handler is included in the leakage test. Our duct leakage test results are in. Mcgill airflow often gets speciﬁ cations stating that the leakage class for rectangular and round ductwork will be in accor dance with the smacna table 4 1 for a 3 inch water gauge wg supply duct system thus allowing the rectangular duct leakage class to be 12 and the round and ﬂ at oval duct leakage. Here is an example.

The test may be performed prior to close in or at final inspection. Testing shall be conducted by an approved third party. Fill out securely sign print or email your duct leakage test report tra green instantly with signnow. Irc 2015 n1103 3 4 allows the following duct leakage.

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. A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating ventilating and air conditioning hvac ductwork. Duct leakage test report. Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required.

However our local utah code has a carve out allowing 7 cfm per 100 sq ft. The duct blaster is used to quantify the leakage rate of the duct system. Start a free trial now to save yourself time and money. Us duct leakage testing ri trequirements smacna duct class 1 2 inwg 3 inwg 4 6 10 inwg seal class cb a sli t transverse joints seams sealing applicable ransverse joints only asvese joints and seams jo s sea s and all wall penetrations leakage class c l cfm leakage per 100 ft2 1 in h 2 o rectangular.

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. The energy final inspection will not be complete without a passing test result. 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. Required 3rd party test for new homes and retrofits according to building codes in the state of illinois a duct pressure test must be performed if any portion of the hvac system is placed in unconditioned spaces such as an attic crawlspace or garage.

Duct leakage testing 2017 dc energy conservation code 2015 iecc r403 3 3 duct testing mandatory. Ducts with less than 40 linear feet in unconditioned spaces. In both cases the requirements are the same. Duct systems that are documented to have been previously sealed as confirmed through field verification and diagnostic testing in accordance with procedures in rs 33.

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