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2017 Florida:.Building. Code -:Finer Colnse'rvatioln;:Sixth Edition JY :: .:.R402AA: 2Testing.:.. : - The building:or dwelling-unit shall be tested and verified as having an air leakage rate not exceeding .seven air changes per hour in.Climate Zones.1.and 2,and three air..changes per hour in Climate Zones:= 3 through.8.Testing shall'be conducted.in accordance with ANSURESNETACC.380 an6re0ortod at.a pressure.of 0.2 'inch w: 50., ascals . Test .shall be.conducted b .either individuals as defined in 9 ( P ) 9 . Y . Section553.993(5)'or(7),Florida Statutes,-or individuals licensed as setforth in'Section 480A 05(3)(f); (g) or_(i) or ari approved third party. -A written;report of the results of the-test shall:be signed.by the: party conducting the test and-provided to.the.cod&official.Testing shall.:be.performed at any time:after creation of all penetrations of.the building thermal envelope: :. - Exception: Testing is.'not required..for..additions;-alterations,:renovations or repairs:-of the. building thermal:envelope of:existing buiIdirigs in which the new:consteuction is less than 85:percent of.the building thermal:envelope- During . :. . During testing: - 1: I.Exterior.windows and-doors, fireplace and stove-doors shall be:closed, but not sealed, beyond the intended weatherstripping:or other infiltration.control measures: ..2. :2:Dampers'including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but' ; not sealed beyond-intended infiltration.control measures.: 3. 3.Interi6r doors, if installed at the time dthe test-, shall be'open: 4: .4.Exterior doors for continuous ventilation.systems and heat recovery..ventilators shall be closed and sealed.. .: : . . 5.. 5.Heating and'cooling-systems, if installed.atthe.time:ofthe test; shall be turned-off. 6: 6.Supply and return registers;.if installed at the time of the test, shall.be fully open..