The provisions of Section C403 of IECC-CE are adopted by reference with the following modifications:
1. Throughout the body of each provision of this section, reset the singular and plural forms of the following terms in italic type: "air curtain," "air economizer," "boiler system," "computer room," "data center system," "demand control ventilation," "duct system," "embedded fan," "enthalpy recovery ratio," "fan array," "fan brake horsepower," "fan energy index," "fan nameplate electrical input power," "fan system design condition," "fault detection and diagnostics system," "fault detection and diagnostics (FDD) system," "large-diameter ceiling fan," "nameplate horsepower," "radiant heating system," "thermostat," "ventilation air," "walk-in cooler," "walk-in freezer," and "water economizer."
2. Revise items 1 and 2 in Section C403.1.2 to read:
"1. Replace design mechanical load component (MLC) values specified in Table 6.2.1.1 of ASHRAE 90.4 with 0.22.
2. Replace annualized MLC values specified in Table 6.2.1.2 of ASHRAE 90.4 with 0.17."
3. Delete Tables C403.1.2(1) and C403.1.2(2).
4. Revise Table C403.3.2(5) by deleting rows applicable to "outside the US."
5. Revise Table C403.3.2(6), footnote g, by replacing "constant" with "continuously."
6. Revise the exception to Section C403.4.3.3.1 by replacing "permitted" with "allowed."
7. Revise Section C403.4.3.3.2 by deleting "in Climate Zones 3 through 8."
8. Revise Section C403.4.4, item 3.2 by replacing "indicated in Table C403.4.4 based on the climate zone and system served" with "of 7.5 horsepower (5.6 kW) or greater."
9. Delete Table C403.4.4.
10. Revise Section C403.5 by replacing "air or water economizer" with "air economizer or water economizer" and each "Group R" with "Group R."
11. Revise the exception to Section C403.5 by replacing "Exceptions:" with "Exception:" and deleting items 1 and 5.
12. Revise Table C403.5(1) by deleting all rows except for climate zone 5A.
13. Delete Table C403.5(2).
14. Revise the exception to Section C403.5.3.2 by replacing "permitted" with "allowed."
15. Revise Table C403.5.3.3 by deleting all rows except for climate zone 5A and deleting footnote a.
16. Revise Section C403.6.5 by deleting "in Climate Zones 0B, 1B, 3B, 3C and 4 through 8."
17. Delete exceptions 3, 4 and 5 to Section C403.6.5.
18. Delete Section C403.6.5.1.
19. Revise Section C403.7.1 and its exceptions by replacing each "Table 403.3.1.1" with "Section 403."
20. Revise the title of Section C403.7.4 to read "Energy recovery ventilation systems."
21. Revise Section C403.7.4.1 and its exceptions to read:
"C403.7.4.1 Nontransient dwelling units.
Dwelling units intended for occupancy by the same persons for more than 30 days shall be provided with outdoor air energy recovery ventilation systems with an enthalpy recovery ratio of not less than 60 percent at heating design condition."
22. Revise Section C403.7.4.2, excluding its exceptions, to read:
"Where the supply airflow rate of a fan system serving a space other than a dwelling unit covered by Section C403.7.4.1 exceeds the values specified in Tables C403.7.4.2(1) and C403.7.4.2(2), the system shall include an energy recovery ventilation system. The energy recovery ventilation system shall provide an enthalpy recovery ratio of not less than 50 percent at design conditions. Where an air economizer is required, the energy recovery ventilation system shall include a bypass or controls that allow operation of the economizer as required by Section C403.5."
23. Revise the exception to Section C403.7.4.2 by replacing "energy recovery systems" with "energy recovery ventilation systems" in item 1 and deleting items 5 and 6.
24. Revise Table C403.7.4.2(1) by deleting all rows except for climate zone 5A and by deleting "NR = Not Required."
25. Revise Table C403.7.4.2(2) by deleting all rows except for climate zone 5A.
26. Revise Section C403.7.6 by replacing "Group R-1 buildings" with "Group R-1 occupancies."
27. Revise the exception to Section C403.7.7, item 1 to read: "In buildings with fewer than three stories above grade plane" and deleting item 2.
28. Revise exception 1 to Section C403.8.1 by replacing "permitted" with "allowed."
29. Revise Section C403.8.4 by replacing "permitted" with "allowed."
30. Delete exception 2 to Section C403.10.6.
31. Revise Section C403.12.1 by deleting each "not less than R-8 insulation in Climate Zones 0 through 4 and" and each "in Climate Zones 5 through 8."
32. Revise Table C403.12.3, footnotes a and c, by replacing each "permitted" with "allowed."
33. Revise Section C403.12.3.1 by replacing "permitted" with "allowed."