Indiana Administrative Code
Title 675 - FIRE PREVENTION AND BUILDING SAFETY COMMISSION
Article 14 - ONE AND TWO FAMILY DWELLING CODE
Rule 4.4 - 2020 Indiana Residential Code
Section 4.4-98 - Section N1103.3.4; duct leakage (prescriptive)
Current through March 20, 2024
Authority: IC 22-13-2-2; IC 22-13-2-2.5; IC 22-13-2-13
Affected: IC 22-12; IC 22-13; IC 22-14; IC 22-15; IC 36-7
Sec. 98.
Change the text of SECTION N1103.3.4 to read as follows:
The total leakage of the ducts, where measured in accordance with Section N1103.3.3 (R403.3.3), shall be as follows:
1. Rough-in test: The total leakage shall be less than or equal to 4 cubic feet per minute (113.3 L/min) per 100 square feet (9.29 m2) of conditioned floor area where the air handler is installed at the time of the test. Where the air handler is not installed at the time of the test, the total leakage shall be less than or equal to 3 cubic feet per minute (85 L/min) per 100 square feet (9.29 m2) of conditioned floor area.
2. Postconstruction test: Leakage to outside shall be less than or equal to 4 cubic feet per minute (113.3 L/min) per 100 square feet (9.29 m2) of conditioned floor area.