(2) Equipment and system sizing. Substitute the following wording for the requirements and the exceptions in IECC section C403.2.2 s.C403.3.1: Heating and cooling equipment and systems shall be sized to provide the minimum space and system loads calculated in accordance with s. SPS 363.0302 or ASHRAE 90.1 – 2019. (3) Economizers simple hvac systems. Substitute the following wording for the requirements in IECC section C403.3 s. C403.5: Supply air economizers shall be provided on the following cooling systems:
(b) All other cooling systems > 54,000 60,000 Btu/h. Where a single room or space is supplied by multiple air systems, the aggregate cooling capacity of those systems shall be used in applying this requirement.
(4) Economizers cooling requirements. Substitute the following wording for the title of IECC Table C403.3 (1) C403.3.2 (3): MINIMUM BUILDING CHILLED WATER SYSTEM COOLING CAPACITY FOR DETERMINING ECONOMIZER COOLING REQUIREMENTS.
Section 128. SPS 363.0403 (5) and (6) are repealed.
Section 129. SPS 363.0403 (7) (intro.) is amended to read:
SPS 363.0403 (7) Demand controlled ventilation. Substitute the following for the wording, but not the exceptions, in IECC section 403.2.6.1 s. C403.7.1: Demand control ventilation (DCV) is required for spaces larger than 40 people per 1000 sq. ft. (93 m2) of floor area (as established in IMC Table 403.3 403.3.1.1) and served by systems with one or more of the following:
Section 130. SPS 363.0403 (8), (9), (10), and (11) are repealed.
Section 131. SPS 363.0403 (12) and (13) are created to read:
SPS 363.0403 (12) Fault detection and diagnostics. The requirements in IECC s. C403.2.3 Item 2, C403.2.3 Item 3, and C403.2.3 Item 4 are not included as part of chs. SPS 361 to 366. (13) Duct and plenum insulation and sealing. This is a department informational note to be used under IECC s. C403.12.1: Note: For the purpose of determining insulation requirements, ductwork located outside of the building envelope is considered to be located outside of the building.
Section 132. SPS 363.0404 is repealed and recreated to read:
SPS 363.0404 (1) Heat traps. The requirements in IECC s. C404.3 are not included as part of this chapter.
(2) Heated water supply piping. The requirements of IECC ss. C404.5, C404.5.1, and C404.5.2 are not included as part of chs. SPS 361 to 366. Refer to ch. SPS 382 for heated water supply piping requirements. (3) Circulation Systems The requirements of IECC ss. C404.6.1, C404.6.2, and C404.6.3 are not included as part of chs. SPS 361 to 366. Refer to ch. SPS 382 for service water heating circulation requirements. (4) Pools and spas. The requirements in IECC ss. C404.8.2 and C404.8.3 are not included as part of this chapter.
Section 133. SPS 363.0406 is repealed.
Section 134. SPS 363.0407 is repealed.
Section 135. SPS 363.0408 is repealed.
Section 136. SPS 363.0502 is repealed.
Section 137. SPS 363.0503 (1), (2), (3), and (4) are repealed.
Section 138. SPS 363.0600 (1), (2), (3), and (4) are amended to read:
SPS 363.0600 (1) ASTM C177-13 C177-19, Test method for steady-state heat flux measurements and thermal transmission properties by means of the guarded-hot-plate apparatus.
(2) ASTM C335/335M-10 C335/335M-17, Test method for steady state heat transfer properties of horizontal pipe insulation.
(3) ASTM 518-15 518-21, Test method for steady-state thermal transmission properties by means of the heat flow meter apparatus.
(4) ASTM C1363-11 C1363-19, Test method for thermal performance of materials and envelope assemblies by means of a hot box apparatus.
Section 139. SPS 363.5101 is amended to read:
SPS 363.5101 The requirements in IECC sections ss. R101 and R103 to R109 R110 are not included as part of this chapter.
Section 140. SPS 363.5302 is amended to read:
SPS 363.5302 These are department rules in addition to the requirements in IECC section s. R302: The exterior design temperatures used for heating and cooling load calculations shall be as specified in SPS Table 363.0302 or ASHRAE 90.1 – 2019.
Section 141. SPS 363.5303 (1) (Note), (2) (a) 1., 2., 3., and 4. are amended to read:
SPS 363.5303 (1) Note: Use of the ASHRAE Handbook of Fundamentals standard in effect at the time of publication of the 2015 2021 IECC constitutes compliance with this section.
(2) (a) 1. ASTM C177-13 C177-19, Test method by guarded hot plate apparatus.
2. ASTM C335/335M-10 C335/335M-17, Test method of horizontal pipe insulation.
3. ASTM C518-15 518-21, Test method by means of the heat flow meter apparatus.
4. ASTM C1363-11 C1363-19, Test method by means of a hot box apparatus.
Section 142. SPS 363.5402 is repealed.
Section 143. SPS 363.5403 (2) is amended to read:
SPS 363.5403 (2) Substitute the following wording for the requirements in IECC section R403.3.2 s. R403.3.4: All ducts, air handlers, and filter boxes shall be sealed. Joints and seams shall comply with IMC section s. 603.9.
Section 144. SPS 363.5405 is amended to read:
SPS 363.5405 This is a department informational note to be used under IECC section s. R405.6: Note: The federal Department of Energy has developed REScheckTM, a computer program that may be used in demonstrating compliance for a residential building which has no more than 3 stories above grade plane and has 3 or more dwelling units in plane. The REScheck program may be downloaded at http://www.energycodes.gov. The most recent version of REScheck shall be used to determine code compliance. When using the program, the applicable code must be defined as the “2015 IECC.” “2021 IECC.” Section 145. SPS 363.5502 is repealed.
Section 146. SPS 363.5503 is repealed.
Section 147. SPS 363.5600 (1), (2), (3), and (4) are amended to read:
SPS 363.5600 (1) ASTM C177-13 C177-19, Test method for steady-state heat flux measurements and thermal transmission properties by means of the guarded-hot-plate apparatus.
