COMMERCIAL ENERGY EFFICIENCY

Municipal Code of Chicago tit. 14N, pt. I, ch. 14N-C4

in effect

Municipal Code of Chicago § 14N-C4-C401 General.

14N-C4-C401 General. The provisions of Section C401 of IECC-CE are adopted by reference with the following modifications: 1. Revise Section C401.1 by replacing "commercial" with "commercial." 2. Revise Section C401.2 and its subsections to read: "C401.2 Application. Commercial buildings shall comply with Chapter C6 and either Section C401.2.1, C401.2.2, C401.2.3 or C401.2.4. C401.2.1 Chicago Energy Transformation Code. Commercial buildings shall comply with one of the following: 1. Prescriptive Compliance. The Prescriptive Compliance option requires compliance with Sections C402 through C406 and Section C408. Dwelling units and sleeping units in Group R-2 occupancies without systems serving multiple units shall be deemed to be in compliance with this chapter, provided that they comply with Section R406. 2. Total Building Performance. The Total Building Performance option requires compliance with Section C407. Exception: Additions, alterations, repairs and changes of occupancy to existing buildings complying with Chapter C5. C401.2.2 ASHRAE 90.1. Commercial buildings shall comply with the requirements of ANSI/ASHRAE/IESNA 90.1. C401.2.3 Phius certification. Commercial buildings shall obtain certification in accordance with Sections 401.2.3.1 and 403.2.3.2. C401.2.3.1 Construction documents. The construction documents submitted to the building official shall establish that the project is eligible for certification in accordance with the PHIUS Passive Building Standard Certification Guidebook, including all co-requisite programs applicable to the project type. Such documentation shall include: 1. A design certification letter issued by an approved third-party certification organization. 2. A list of compliance features. C401.2.3.2 Certification. Within 180 days of project completion, as evidenced by passing the last required final inspection or issuance of a certificate of occupancy, as applicable in accordance with the Chicago Construction Codes Administrative Provisions, the owner shall submit to the building official a written certification establishing that the project has been certified in accordance with the PHIUS Passive Building Standard Certification Guidebook, including all co-requisite programs applicable to the project type. C401.2.4 National Green Building Standard certification. Eligible commercial buildings shall obtain certification in accordance with Sections 401.2.4.1 and 401.2.4.2. C401.2.4.1 Construction documents. The construction documents submitted to the building official shall establish that the project is eligible for certification at the gold or emerald level in accordance with ICC 700. Such documentation shall include: 1. Evidence that the project has been registered with an approved third-party certification organization that certifies compliance with ICC 700. 2. Evidence that the project, as designed, is eligible for certification at the gold or emerald level. 3. A list of compliance features. C401.2.4.2 Certification. Within 180 days of project completion, as evidenced by passing the last required final inspection or issuance of a certificate of occupancy, as applicable in accordance with the Chicago Construction Codes Administrative Provisions, the owner shall submit to the building official a written certification that the project has achieved certification at the gold or emerald level under ICC 700. The written certification shall be issued by an approved third-party certification organization." 3. Revise Section C401.3 by replacing "an approved party" with "the builder." 4. Revise Section C401.3, item 1, by replacing "basement walls, crawl space walls" with "below-grade walls, crawl space walls."

Municipal Code of Chicago § 14N-C4-C402 Building envelope requirements.

14N-C4-C402 Building envelope requirements. The provisions of Section C402 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: "above-grade wall," "air barrier," "air curtain," "below-grade wall," "building thermal envelope," "commercial building," "conditioned space," "continuous insulation," "daylight responsive control," "daylight zone," "dwelling unit," "dynamic glazing," "enclosed space," "entrance door," "equipment room," "exterior wall," "fenestration," "fenestration area," "greenhouse," "infiltration," "internal curtain system," "net floor area," "opaque doors," "roof assembly," "rooftop monitor," "skylight," "sleeping unit," "solar heat gain coefficient (SHGC)," "testing unit enclosure area," "thermostat," "vertical fenestration," "visible transmittance (VT)," "walk-in cooler," and "walk-in freezer." 2. Revise Section C402.1 by deleting item 2 and replacing "skylight area" with "skylight fenestration area." 3. Revise the exception to Section C402.1.1.1, item 1 by replacing "Low energy" with "Low-energy." 4. Revise Section C402.1.2 by deleting item 5 and revising item 4 to read: "Have an average wall and roof U-factor less than 0.200." 5. Revise Section C402.1.3 by replacing each "Group R" with "Group R." 6. Revise Table C402.1.3 by deleting all columns except "5 and Marine 4," deleting "and Marine 4," and deleting footnote c. 7. Revise Section C402.1.4 by replacing each "Group R" with "Group R." 8. Revise Table C402.1.4 by deleting all columns except "5 and Marine 4," deleting "and Marine 4," replacing "permitted" with "allowed" in footnote b, and deleting "in Climate Zones 0 through 6 and less than or equal to 0.36 in Climate Zones 7 and 8" in footnote h. 9. Revise Section C402.1.4.2 to read: "C402.1.4.2 Thermal resistance of cold-formed steel assemblies. U-factors of walls with cold-formed steel framed ceilings and walls shall be allowed to be determined in accordance with AISI S250 as modified herein. 1. Where the steel-framed wall contains no cavity insulation and uses continuous insulation to satisfy the U-factor maximum, the steel-framed wall member spacing is allowed to be installed at any on-center spacing. 2. Where the steel-framed wall contains framing at 24 inches (600 mm) on center with a 23% framing factor or framing at 16 inches (400 mm) on-center with a 25% framing factor, the next lower framing member spacing input values shall be used when calculating using AISI S250. 3. Where the steel-framed wall contains less than 23% framing factors the AISI S250 shall be used without any modifications. 4. Where the steel-framed wall contains other than standard C-shape framing members the AISI S250 calculation option for other than standard C-shape framing is allowed to be used." 10. Delete Equation 4-1. 11. Delete Table C402.1.4.2. 12. Revise Section C402.2.2 by replacing "permitted" with "allowed." 13. Revise the exceptions to Section C402.2.3 by replacing each "permitted" with "allowed." 14. Revise Section C402.2.5 by replacing each "below-grade exterior walls" with "below-grade walls." 15. Insert a new Section C402.2.8 to read: "C402.2.8 Balconies and parapets. See Section C605." 16. Revise Section C402.3 and its subparts to read: "C402.3 Roof solar reflectance. See Section 1515 of the Chicago Building Code." 17. Delete Table C402.3. 18. Delete Equation 4-3. 19. Revise Table C402.4 by deleting all columns except "5 and Marine 4," deleting "and Marine 4," and deleting "NR = No Requirement." 20. Revise Section C402.4.1 by replacing "skylight area" with "skylight fenestration area." 21. Revise Section C402.4.1.1 to read: "C402.4.1.1 Increased vertical fenestration area with daylight responsive controls. Not more than 40 percent of the gross above-grade wall area shall be vertical fenestration, provided that all of the following requirements are met: 1. In buildings with no more than two stories above grade plane: not less than 50 percent of the net floor area is within a daylight zone. 2. In buildings with three or more stories above grade plane: not less than 25 percent of the net floor area is within a daylight zone. 3. Daylight responsive controls are installed in daylight zones. 4. Visible transmittance (VT) of vertical fenestration is not less than 1.1 times solar heat gain coefficient (SHGC). Exception: Fenestration that is outside the scope of NFRC 200 is not required to comply with Item 4." 22. Revise Section C402.4.1.2 by replacing "toplit" with "toplit."* * Editor’s note – Coun. J. 9-21-22, p. 52080, Art. I, § 1, incorrectly numbered this and subsequent subsections as 4 through 19. Renumbered at the discretion of the editor. Future legislation will correct the numbering if needed. 23. Insert a new Section C402.4.1.3 and Equations 4-3a through 4-3d to read: "C402.4.1.3 Orientation. The fenestration area for vertical fenestration shall comply with either equations 4-3a and 4-3b or 4-3c and 4-3d. Exceptions: 1. Buildings with shade on 75% of the east- and west-oriented vertical fenestration area from permanent projections, existing buildings, existing permanent infrastructure, or topography at 9 a.m. and 3 p.m., respectively, on the summer solstice (June 21). 2. Alterations and additions with no increase in vertical fenestration area. 3. Buildings where the west-oriented and east-oriented vertical fenestration area does not exceed 20% of the gross wall area for each of those facades and the actual SHGC for vertical fenestration on those facades is no greater than 90% of the maximum specified in Table C402.4. Aw (At)/4 (Equation 4-3a) Ae (At)/4 (Equation 4-3b) Aw × SHGCw (At × SHGCc)/5 (Equation 4-3c) Ae × SHGCe (At × SHGCc)/5 (Equation 4-3d) where: Ae = The fenestration area of east-oriented vertical fenestration (oriented within 45 degrees of true east to the south and within 22.5 degrees of true east to the north) in square feet. Aw = The fenestration area of west-oriented vertical fenestration (oriented within 45 degrees of true west to the south and within 22.5 degrees of true west to the north) in square feet. At = The total fenestration area of vertical fenestration in square feet, measured using the rough opening and including the glazing, sash and frame. SHGCc = Maximum allowed SHGC from Table C402.4. SHGCe = Actual SHGC for east-oriented vertical fenestration. SHGCw = Actual SHGC for west-oriented vertical fenestration." 24. Revise Section C402.4.2 by replacing each "toplit" with "toplit." 25. Revise the exception to Section C402.4.2 by deleting item 1 and replacing "sidelit" with "sidelit." 26. Revise Section C402.4.3.1 to read: "Skylights shall be allowed a maximum SHGC of 0.60 where located above daylight zones provided with daylight responsive controls." 27. Revise Section C402.4.3.2 to read: "Where skylights are installed above daylight zones provided with daylight responsive controls, a maximum U- factor of 0.75 shall be allowed." 28. Revise Sections C402.4.3.3 and C402.4.3.4 by replacing "permitted" with "allowed." 29. Revise Section C402.4.4 by replacing "toplit" with "toplit." 30. Revise Section C402.4.5.2 to read: "Opaque nonswinging doors that are horizontally hinged sectional doors with a single row of fenestration shall have an assembly U-factor less than or equal to 0.440, provided that the fenestration area is not less than 14 percent and not more than 25 percent of the total door area." 31. Delete the exception to Section C402.5.1. 32. Revise Section C402.5.1.1 by replacing "continuous" with "continuous" and "in places and changes in" with "at joints between dissimilar." 33. Delete all exceptions to Section C402.5.1.2. 34. Revise Table C402.5.4 by replacing "High-speed doors" with "High speed doors." 35. Revise the first sentence of Section C402.5.5 to read: "Where combustion air is supplied through openings in an exterior wall to a room or space containing a space- conditioning fuel-burning appliance, one of the following shall apply:" 36. Revise the exception to Section C402.5.9 by replacing "Exceptions:" with "Exception:" and deleting item 1. 37. Revise exception 2 to Section C402.5.11 by deleting "where approved by the code official."

Municipal Code of Chicago § 14N-C4-C403 Building mechanical systems.

14N-C4-C403 Building mechanical systems. 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."

Municipal Code of Chicago § 14N-C4-C404 Service water heating.

14N-C4-C404 Service water heating. The provisions of Section C404 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: "demand recirculation water system," "dwelling unit," "heat trap," "on-site renewable energy," and "water heater." 2. Revise Section C404.5.2 by replacing "circulating water systems" with "circulating hot water systems." 3. Revise Section C404.7 by replacing "Group R" with "Group R." 4. Revise Section C404.8.3 by deleting "approved."

Municipal Code of Chicago § 14N-C4-C405 Electrical power and lighting systems.

14N-C4-C405 Electrical power and lighting systems. The provisions of Section C405 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: "daylight responsive control," "daylight zone," "dwelling unit," "general lighting," "occupant sensor controls," "rooftop monitor," and "time switch control." 2. Throughout the body of each provision of this section, reset the following terms in non-italic type: "toplit" and "sidelit." 3. Revise Section C405.2.1 by replacing "Occupant sensor controls" with "Occupant sensor controls." 4. Revise the exception to Section C405.2.1.1 by replacing "permitted" with "allowed." 5. Revise Section C405.2.1.3, item 2, by replacing each "permitted" with "allowed." 6. Revise Section C405.2.2.1, item 6, by replacing "permit" with "allow." 7. Revise the exception to Section C405.2.2.1 by replacing "permitted" with "allowed." 8. Revise the exceptions to Section C405.2.4.1 by replacing each "permitted" with "allowed." 9. Revise Equation 4-10 by replacing "approved" with "reliable." 10. Revise Section C405.3.2.2.1, including the exception, by replacing each "permitted" with "allowed." 11. Revise Section C405.4 to read: "C405.4 Lighting for plant growth and maintenance. All permanently installed luminaires used for plant growth and maintenance shall have a photosynthetic photon efficacy as defined in accordance with ANSI/ASABE S640 of not less than 1.7 µmol/J for greenhouses and 2.2 µmol/J for all other indoor growing spaces. Exceptions: 1. Buildings with no more than 40 kW of aggregate horticultural lighting load. 2. Cannabis facilities subject to the Cannabis Regulation and Tax Act, 410 ILCS 705." 12. Revise Section C405.5.3 to read: "C405.5.3 Gas lighting. See Section C606." 13. Revise Section C405.6 by replacing "Group R-2 building" with "Group R-2 occupancy." 14. Revise Section C405.7 by replacing "Low-voltage dry-type distribution electric transformers" with "Low-voltage dry-type distribution transformers." 15. Revise Section C405.9.2 by replacing "permitted" with "allowed" and deleting "and applicable local code." 16. Revise exception 3 to Section C405.11.1 by replacing "permitted" with "allowed." 17. Revise Section C405.12.2 by deleting "approved" and by replacing "permitted" with "allowed." 18. Revise Table C405.12.2 by replacing "permitted" with "allowed." 19. Revise Section C405.12.3 by replacing each "permitted" with "allowed."

Municipal Code of Chicago § 14N-C4-C406 Additional efficiency requirements.

14N-C4-C406 Additional efficiency requirements. The provisions of Section C406 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: "dwelling unit," "fault detection and diagnostics system," "fault detection and diagnostics (FDD) system," "general lighting," "infiltration," "on-site renewable energy," "service water heating," "sleeping unit," and "water heater." 2. Revise Section C406.1 by inserting items 12 and 13 to read: "12. Grid-integrated controls for HVAC and more efficient HVAC performance in accordance with Sections C406.2 and C406.13. 13. Grid-integrated controls for water heating and high-efficiency service water heating in accordance with Sections C406.7 and C406.14." 3. Revise Tables C406.1(1) through C406.1(5) to read: "TABLE C406.1(1) ADDITIONAL ENERGY EFFICIENCY CREDITS FOR GROUP B OCCUPANCIES SECTION | CREDIT(S) SECTION | CREDIT(S) C406.2.1: 5% heating efficiency improvement a | 1 C406.2.2: 5% cooling efficiency improvement a | 2 C406.2.3: 10% heating efficiency improvement a | 2 C406.2.4: 10% cooling efficiency improvement a | 4 or Equation 4-12 C406.3: Reduced lighting power | 7 or Equation 4-13 C406.4: Enhanced digital lighting controls | 2 C406.5: On-site renewable energy | 9 or Equation 4-14 C406.6: Dedicated outdoor air | 5 C406.7.2: Recovered or renewable water heating | NA C406.7.3: Efficient fossil fuel water heater | NA C406.7.4: Heat pump water heater | NA C406.8: Enhanced envelope performance | 10 C406.9: Reduced air infiltration | 11 C406.10: Energy monitoring | 2 C406.11: Fault detection and diagnostics system | 1 C406.12: Efficient commercial kitchen equipment | Equation 4-15 C406.13: Grid integrated HVAC controls | 2 b C406.14: Grid integrated water heating controls | 1 NA = Not Applicable. a. Only one type of credit may be claimed for heating efficiency and only one type of credit may be claimed for cooling efficiency. b. Reduce in accordance with Section C406.13.1. TABLE C406.1(2) ADDITIONAL ENERGY EFFICIENCY CREDITS FOR GROUP R AND I OCCUPANCIES SECTION | CREDIT(S) SECTION | CREDIT(S) C406.2.1: 5% heating efficiency improvement a | 1 C406.2.2: 5% cooling efficiency improvement a | 1 C406.2.3: 10% heating efficiency improvement a | 2 C406.2.4: 10% cooling efficiency improvement a | 1 or Equation 4-12 C406.3: Reduced lighting power | 2 or Equation 4-13 C406.4: Enhanced digital lighting controls | NA C406.5: On-site renewable energy | 7 or Equation 4-14 C406.6: Dedicated outdoor air | 8 C406.7.2: Recovered or renewable water heating | 14 C406.7.3: Efficient fossil fuel water heater | 9 b C406.7.4: Heat pump water heater | 5 C406.8: Enhanced envelope performance | 4 C406.9: Reduced air infiltration | 9 C406.10: Energy monitoring | 1 C406.11: Fault detection and diagnostics system | 1 C406.12: Efficient commercial kitchen equipment | Equation 4-15 C406.13: Grid integrated HVAC controls | 3 c C406.14: Grid integrated water heating controls | 1 NA = Not Applicable. a. Only one type of credit may be claimed for heating efficiency and only one type of credit may be claimed for cooling efficiency. b. Reduce in accordance with Section C406.4.3. c. Reduce in accordance with Section C406.13.1. TABLE C406.1(3) ADDITIONAL ENERGY EFFICIENCY CREDITS FOR GROUP E OCCUPANCIES SECTION | CREDIT(S) SECTION | CREDIT(S) C406.2.1: 5% heating efficiency improvement a | 1 C406.2.2: 5% cooling efficiency improvement a | 1 C406.2.3: 10% heating efficiency improvement a | 3 C406.2.4: 10% cooling efficiency improvement a | 2 or Equation 4-12 C406.3: Reduced lighting power | 8 or Equation 4-13 C406.4: Enhanced digital lighting controls | 2 C406.5: On-site renewable energy | 6 or Equation 4-14 C406.6: Dedicated outdoor air | NA C406.7.2: Recovered or renewable water heating | 1 C406.7.3: Efficient fossil fuel water heater | 2 b C406.7.4: Heat pump water heater | 1 C406.8: Enhanced envelope performance | 2 C406.9: Reduced air infiltration | 1 C406.10: Energy monitoring | 2 C406.11: Fault detection and diagnostics system | 1 C406.12: Efficient commercial kitchen equipment | Equation 4-15 C406.13: Grid integrated HVAC controls | 4 c C406.14: Grid integrated water heating controls | 1 NA = Not Applicable. a. Only one type of credit may be claimed for heating efficiency and only one type of credit may be claimed for cooling efficiency. b. Reduce in accordance with Section C406.4.3. c. Reduce in accordance with Section C406.13.1. TABLE C406.1(4) ADDITIONAL ENERGY EFFICIENCY CREDITS FOR GROUP M OCCUPANCIES SECTION | CREDIT(S) SECTION | CREDIT(S) C406.2.1: 5% heating efficiency improvement a | 2 C406.2.2: 5% cooling efficiency improvement a | 1 C406.2.3: 10% heating efficiency improvement a | 3 C406.2.4: 10% cooling efficiency improvement a | 2 or Equation 4-12 C406.3: Reduced lighting power | 12 or Equation 4-13 C406.4: Enhanced digital lighting controls | 3 C406.5: On-site renewable energy | 7 or Equation 4-14 C406.6: Dedicated outdoor air | 2 C406.7.2: Recovered or renewable water heating | NA C406.7.3: Efficient fossil fuel water heater | NA C406.7.4: Heat pump water heater | NA C406.8: Enhanced envelope performance | 4 C406.9: Reduced air infiltration | 3 C406.10: Energy monitoring | 3 C406.11: Fault detection and diagnostics system | 1 C406.12: Efficient commercial kitchen equipment | Equation 4-15 C406.13: Grid integrated HVAC controls | 3 b C406.14: Grid integrated water heating controls | NA NA = Not Applicable. a. Only one type of credit may be claimed for heating efficiency and only one type of credit may be claimed for cooling efficiency. b. Reduce in accordance with Section C406.13.1. TABLE C406.1(5) ADDITIONAL ENERGY EFFICIENCY CREDITS FOR OTHER a OCCUPANCIES SECTION | CREDIT(S) SECTION | CREDIT(S) C406.2.1: 5% heating efficiency improvement c | 1 C406.2.2: 5% cooling efficiency improvement c | 1 C406.2.3: 10% heating efficiency improvement c | 3 C406.2.4: 10% cooling efficiency improvement c | 2 or Equation 4-12 C406.3: Reduced lighting power | 7 or Equation 4-13 C406.4: Enhanced digital lighting controls | 2 C406.5: On-site renewable energy | 7 or Equation 4-14 C406.6: Dedicated outdoor air | 5 C406.7.2: Recovered or renewable water heating b | 14 C406.7.3: Efficient fossil fuel water heater b | 9 d C406.7.4: Heat pump water heater b | 5 C406.8: Enhanced envelope performance | 5 C406.9: Reduced air infiltration | 6 C406.10: Energy monitoring | 2 C406.11: Fault detection and diagnostics system | 1 C406.12: Efficient commercial kitchen equipment | Equation 4-15 C406.13: Grid integrated HVAC controls | 3 e C406.14: Grid integrated water heating controls | 2 NA = Not Applicable. a. Other occupancy groups include all groups except Groups B, E, I, M and R. b. For other occupancy groups listed in Section C406.7.1. c. Only one type of credit may be claimed for heating efficiency and only one type of credit may be claimed for cooling efficiency. d. Reduce in accordance with Section C406.4.3. e. Reduce in accordance with Section C406.13.1." 4. Revise the last sentence of Section C406.1.1 to read: "Where the entire building complies using credits from Section C406.5, C406.8, C406.9 or C406.13, tenant spaces shall be deemed to comply with this section." 5. Revise Section C406.10.2 by deleting "approved" and replacing "permitted" with "allowed." 6. Revise Table C406.10.2 by replacing "permitted" with "allowed." 7. Revise Section C406.10.3 by replacing each "permitted" with "allowed." 8. Revise Section C406.12, item 2 to read: "Be installed prior to the final ventilation inspection." 9. Add a new Section C406.13 to read: "C406.13 Grid-integrated HVAC controls. All thermostatic HVAC controls shall be provided with grid-integrated controls capable of the following: 1. Automatically increasing the zone operating cooling set points by a minimum of 4°F (2.2°C). 2. Automatically decreasing the zone operating heating set points by a minimum of 4°F (2.2°C). 3. Both ramp-up and ramp-down logic to prevent the building peak demand from exceeding that expected without the grid-integrated control implementation. Exception: Controls shall not be installed for any zone serving a Group E-2, I-1, I-2, I-4 or R-4 occupancy, serving a space subject to cooling requirements in accordance with Section 803 of the Chicago Minimum Requirements for Existing Buildings or serving a process where reset of the zone temperature setpoint during a demand shed event might disrupt the process, including but not limited to computer rooms, data centers, telecom and private branch exchange (PBX) rooms, and laboratories. The thermostatic controls shall be capable of performing all other functions provided by the control when the grid-integrated controls are not available. Systems with direct digital control of individual zones reporting to a central control panel shall be capable of remotely complying. C406.13.1 Credit reduction. If grid-integrated controls cannot be installed in a portion of a facility in accordance with the exception to Section C406.13, the credit for this option shall be reduced in proportion to the gross floor area not served by grid-integrated controls." 10. Add a new Section C406.14 to read: "C406.14 Grid integrated water heating controls. All electric storage water heaters in a building with a total storage tank capacity greater than 37 gallons (140 L) shall be provided with grid-integrated controls that comply with ANSI/CTA-2045-B or another approved grid- integrated control."

Municipal Code of Chicago § 14N-C4-C407 Total building performance.

14N-C4-C407 Total building performance. The provisions of Section C407 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 economizers," "energy cost," "proposed design," "service water heating," "standard reference design," and "thermostat." 2. Throughout this section, reset the singular and plural forms of the following terms in non-italic type: "construction document," and "Group R." 3. Revise Section C407.2, item 2 to read: "An annual energy cost that is less than or equal to 80 percent of the annual energy cost of the standard reference design. Energy prices shall be taken from a reliable source, such as the Department of Energy, Energy Information Administration’s State Energy Data System Prices and Expenditures reports. The building official shall be allowed to require time-of-use pricing in energy cost calculations. The reduction in energy cost of the proposed design associated with on-site renewable energy shall be not more than 5 percent of the total energy cost. The amount of renewable energy purchased from off-site sources shall be the same in the standard reference design and the proposed design." 4. Revise Table C407.2 by inserting a new row under "Envelope" to read: "C402.4.1.3 | Fenestration – orientation" 5. Revise Section C407.3.2 by replacing "permitted" with "allowed." 6. Revise Table C407.4.1(1) by replacing the following rows to read: Vertical fenestration other than opaque doors | Area 1. The proposed vertical fenestration area where the proposed vertical fenestration area is less than 40 percent of above-grade wall area. 2. 40 percent of above-grade wall area where the proposed vertical fenestration area is 40 percent or more of the above-grade wall area. 3. Fenestration orientation shall comply with Section C402.4.1.3. | As proposed U-factor: as specified in Table C402.4 | As proposed 1. SHGC: as specified in Table C402.4 2. Fenestration SHGC shall comply with Section C402.4.1.3. | As proposed External shading and PF: none | As proposed Skylights | Area 1. The proposed skylight fenestration area; where the proposed skylight fenestration area is less than that allowed by Section C402.1. 2. The area allowed by Section C402.1; where the proposed skylight fenestration area exceeds that allowed by Section C402.1. | As proposed U-factor: as specified in Table C402.4 | As proposed SHGC: as specified in Table C402.4 | As proposed 7. Revise Table C407.4.1(3), footnote e by replacing "permits" with "allows." 8. Revise Section C407.4.2.2 by replacing "permitted" with "allowed." 9. Revise Section C407.4.2.3 by replacing "permitted" with "allowed." 10. Revise Section C407.5 by deleting "approved." 11. Revise Section C407.5.1 to read: "Performance analysis tools complying with the applicable subsections of Section C407 and tested according to ASHRAE Standard 140 shall be accepted." 12. Revise Section C407.5.2 by replacing "an approved" with "a reliable."

Municipal Code of Chicago § 14N-C4-C408 Maintenance information and system commissioning.

14N-C4-C408 Maintenance information and system commissioning. The provisions of Section C408 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 economizer," "enclosed space," and "nameplate horsepower." 2. Throughout this section, reset the following term in non-italic type: "construction documents." 3. Revise Section C408.2 by replacing "permitted" with "allowed." 4. Revise Section C408.2.4.1 by deleting "pursuant to Section C105.2.6." 5. Revise Section C408.2.4.2 by replacing "permitted" with "allowed." 6. Revise Section C408.2.5 to read: "The construction documents shall specify that the documents described in this section be provided to the building owner or owner’s authorized agent within 90 days of project completion as evidenced by passing the last required final inspection or issuance of a certificate of occupancy, as applicable in accordance with the Chicago Construction Codes Administrative Provisions." 7. Revise Section C408.3.1.1 by replacing "permitted" with "allowed." 8. Revise Section C408.3.2 to read: "The construction documents shall specify that the documents described in this section be provided to the building owner or owner’s authorized agent within 90 days of project completion as evidenced by passing the last required final inspection or issuance of a certificate of occupancy, as applicable in accordance with the Chicago Construction Codes Administrative Provisions."

Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2698394Fetched: 10/24/2026