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EM301.3 IECC Section C406
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The following provisions replace the indicated sections in the IECC.
IECC C406.6 Dedicated outdoor air system. Buildings regulated by Section C403 shall be equipped with a dedicated outdoor air system and shall comply with all of the following:
- Outdoor air shall be provided to each zone by a dedicated outdoor air system that delivers 100-percent outdoor air without requiring operation of the heating and cooling system fans for ventilation air delivery.
- The dedicated outdoor air system shall include an energy recovery ventilation system in accordance with Section C403.7.4, configured to provide a change in enthalpy of not less than a 70 percent difference between the outdoor air and return enthalpies, at design conditions.
- The equipment and controls shall be configured to automatically turn off zone heating and cooling systems when there is no call for heating or cooling in the zone.
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