Section SPS 363.0403 - Building mechanical systems(1) CALCULATION OF HEATING AND COOLING LOADS. The following wording is a department requirement in addition to the requirements in IECC section C403.2.1: Design heating and cooling loads shall be determined in accordance with s. SPS 363.0302 and Table 363.0302.(2) EQUIPMENT AND SYSTEM SIZING. Substitute the following wording for the requirements and the exceptions in IECC section C403.2.2: 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.(3) ECONOMIZERS SIMPLE HVAC SYSTEMS. Substitute the following wording for the requirements in IECC section C403.3: Supply air economizers shall be provided on the following cooling systems: (a) All package roof top units.(b) All other cooling systems > 54,000 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): MINIMUM BUILDING CHILLED WATER SYSTEM COOLING CAPACITY FOR DETERMINING ECONOMIZER COOLING REQUIREMENTS.(5) CLIMATE ZONES 6 and 7. Substitute the following wording for the requirements in IECC section C403.4.2.3.2.2: For climate zones 6 and 7 as indicated in IECC Figure C301.1 and Table C301.1, if an open-circuit cooling tower is used, then a separate heat exchanger shall be required to isolate the cooling tower from the heat pump loop, and heat loss shall be controlled by shutting down the circulation pump on the cooling tower loop and providing an automatic valve to stop the flow of fluid.(6) ZONE ISOLATION. The requirements in IECC section C403.2.4.4 are not included as part of chs. SPS 361 to 366.(7) DEMAND CONTROLLED VENTILATION. Substitute the following for the wording, but not the exceptions, in IECC section 403.2.6.1: Demand control ventilation (DCV) is required for spaces larger than 40 people per 1000 sq. ft. (93 m 2) of floor area (as established in IMC Table 403.3) and served by systems with one or more of the following: (a) An air-side economizer.(b) An automatic modulating control of the outdoor air damper.(c) A design outdoor airflow greater than 3,000 cfm (1416L/s).(8) PIPING INSULATION. (a) The requirements in IECC section C403.2.10 are not included as part of chs. SPS 361 to 366. Substitute 2009 IECC Table 503.2.8 for IECC Table C403.2.10.(b) IECC section C403.2.10 exception 6 is not included as part of chs. SPS 361 to 366.(9) MECHANICAL SYSTEMS COMMISSIONING. The requirements of IECC section C403.2.11 are not included as part of chs. SPS 361 to 366.(10) WALK-IN COOLERS AND FREEZERS. The requirements in IECC sections C403.2.15 and C403.2.16 are not included as part of chs. SPS 361 to 366.(11) BOILER TURNDOWN. The requirements in IECC section C403.4.2.5 are not included as part of chs. SPS 361 to 366.Wis. Admin. Code Department of Safety and Professional Services § SPS 363.0403
CR 06-120: cr. Register February 2008 No. 626, eff. 3-1-08; CR 10-103: r. and recr. (2), r. (3) Register August 2011 No. 668, eff. 9-1-11.Adopted by, correction in (1), (2) made under s. 13.92(4) (b) 7., Stats., Register December 2011 No. 672; CR 16-094: renum. 363.0503 (title), (1), (2) to 363.0403 (title), (1), (2) and am., r. (3), renum. 363.0503 (4) to (6) to 363.0403 (3) to (5) and am., cr. (6) to (11), Register April 2018 No. 748, eff. 5/1/2018