Page 517 - 2018_IRC

ENERGY EFFICIENCY

N1106.3 (R406.3) Energy rating index. The Energy Rating 3. Name of individual completing the compliance
Index (ERI) shall be determined in accordance with RES- report.
NET/ICC 301 except that the ERI reference design ventila- 4. Name and version of the compliance software tool.
tion rate shall be in accordance with Equation 11-1.
Exception: Where an otherwise identical building
Ventilation rate, CFM = (0.01 × total square foot area of model is offered in multiple orientations, compliance
house) + [7.5 × (number of bedrooms + 1)] for any orientation shall be permitted by documenting
(Equation 11-1)
that the building meets the performance requirements
Energy used to recharge or refuel a vehicle used for trans- in each of the four (north, east, south and west) cardinal
portation on roads that are not on the building site shall not be orientations.
included in the ERI reference design or the rated design.
N1106.6.3 (R406.6.3) Additional documentation. The
N1106.4 (R406.4) ERI-based compliance. Compliance code official shall be permitted to require the following
based on an ERI analysis requires that the rated design be documents:
shown to have an ERI less than or equal to the appropriate 1. Documentation of the building component charac-
value indicated in Table N1106.4 when compared to the ERI teristics of the ERI reference design.
reference design.
2. A certification signed by the builder providing the
TABLE N1106.4 (R406.4)
MAXIMUM ENERGY RATING INDEX building component characteristics of the rated
CLIMATE ZONE ENERGY RATING INDEX a design.
1 5 7 3. Documentation of the actual values used in the soft-
2 5 7 ware calculations for the rated design.
3 5 7 N1106.6.4 (R406.6.4) Specific approval. Performance
4 6 2 analysis tools meeting the applicable sections of Section
N1106 shall be approved. Documentation demonstrating
5 6 1
the approval of performance analysis tools in accordance
6 6 1 with Section N1106.6.1 shall be provided.
7 5 8 N1106.6.5 (R406.6.5) Input values. Where calculations
8 5 8 require input values not specified by Sections N1102,
N1103, N1104 and N1105, those input values shall be
a. Where on-site renewable energy is included for compliance using the ERI
analysis of Section N1106.4, the building shall meet the mandatory taken from RESNET/ICC 301.
requirements of Section N1106.2, and the building thermal envelope shall
be greater than or equal to the levels of efficiency and SHGC in Table
N1102.1.2 or Table N1102.1.4. SECTION N1107 (R501)
N1106.5 (R406.5) Verification by approved agency. Verifi- EXISTING BUILDINGS—GENERAL
cation of compliance with Section N1106 shall be completed
by an approved third party. N1107.1 (R501.1) Scope. The provisions of Sections N1107
through N1111 shall control the alteration, repair, addition
N1106.6 (R406.6) Documentation. Documentation of the and change of occupancy of existing buildings and structures.
software used to determine the ERI and the parameters for the
residential building shall be in accordance with Sections N1107.1.1 (R501.1.1) Additions, alterations, or repairs:
N1106.6.1 through N1106.6.3. General. Additions, alterations, or repairs to an existing
building, building system or portion thereof shall comply
N1106.6.1 (R406.6.1) Compliance software tools. Soft- with Section N1108, N1109 or N1110. Unaltered portions
ware tools used for determining ERI shall be Approved of the existing building or building supply system shall not
Software Rating Tools in accordance with RESNET/ICC be required to comply with this chapter.
301.
N1107.2 (R501.2) Existing buildings. Except as specified in
N1106.6.2 (R406.6.2) Compliance report. Compliance this chapter, this code shall not be used to require the
software tools shall generate a report that documents that removal, alteration or abandonment of, nor prevent the con-
the ERI of the rated design complies with Sections tinued use and maintenance of, an existing building or build-
N1106.3 and N1106.4. The compliance documentation ing system lawfully in existence at the time of adoption of
shall include the following information: this code.
1. Address or other identification of the residential N1107.3 (R501.3) Maintenance. Buildings and structures,
building.
and parts thereof, shall be maintained in a safe and sanitary
2. An inspection checklist documenting the building condition. Devices and systems that are required by this code
component characteristics of the rated design. The shall be maintained in compliance with the code edition under
inspection checklist shall show results for both the which installed. The owner or the owner’s authorized agent
ERI reference design and the rated design, and shall shall be responsible for the maintenance of buildings and
document all inputs entered by the user necessary to structures. The requirements of this chapter shall not provide
reproduce the results. the basis for removal or abrogation of energy conservation,

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