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§ 5E-2-1 H AWAI‘I C OUNTY C ODE <br />2. If fenestrations have overhangs with projection factors, the <br />maximum solar heat gain coefficient shall be as specified in <br />Table R401.2.1. <br />Dynamic glazing shall be permitted to satisfy the SHGC requirements <br />of Table R402.1.2 provided the ratio of the higher to lower labeled <br />SHGC is greater than or equal to 2.4, and the dynamic glazing is <br />automatically controlled to modulate the amount of solar gain into the <br />space in multiple steps. Dynamic glazing shall be considered <br />separately from other fenestration, and area-weighted averaging with <br />other fenestration that is not dynamic glazing shall not be permitted. <br />Exception: Dynamic glazing is not required to comply with this <br />section when both the lower and higher labeled SHGC already comply <br />with the requirements of Table R402.1.2.” <br />(40) Subsection R402.4.1.2 of the International Energy Conservation Code is <br />amended to read as follows: <br />“R402.4.1.2 Testing. The building or dwelling unit may be tested and <br />verified as having an air leakage rate not exceeding five air changes <br />per hour in Climate Zones 1 and 2, and three air changes per hour in <br />Climate Zones 3 through 8. Testing shall be conducted in accordance <br />with ASTM E 779 or ASTM E 1827 and reported at a pressure of 0.2 <br />inch w.g. (50 Pascals). Testing shall be performed at any time after <br />creation of all penetrations of the building thermal envelope. <br />During testing: <br />1. Exterior windows and doors, fireplace and stove doors shall <br />be closed, but not sealed, beyond the intended <br />weatherstripping or other infiltration control measures. <br />2. Dampers including exhaust, intake, makeup air, backdraft <br />and flue dampers shall be closed, but not sealed beyond <br />intended infiltration control measures. <br />3. Interior doors, if installed at the time of the test, shall be <br />open. <br />4. Exterior doors for continuous ventilation systems and heat <br />recovery ventilators shall be closed and sealed. <br />5. Heating and cooling systems, if installed at the time of the <br />test, shall be turned off. <br />6. Supply and return registers, if installed at the time of the <br />test, shall be fully open.” <br />SUPP. 9 (1-2021) <br /> <br />5E-20 <br /> <br />