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
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
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
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
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
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."