Wisconsin Administrative Code

SPS 322.32 Specific insulation requirements. (1) CEILINGS WITH ATTIC SPACES. (a) R-38 will satisfy the ceiling Rvalue requirement for a dwelling where the full height of uncompressed R-38 insulation extends over the wall top plate at the eaves. (b) An attic-access cover shall be …

SPS 322.33 Slab floors. (1) HEATED OR UNHEATED (a) Any heated or unheated slab floor, the bottom of which is less than 12 inches below adjacent grade, shall be provided with perimeter insulation in accordance with Table 322.311 or Table 322.31-4, except as provided in par. (b). (…

SPS 322.34 Crawl spaces. (1) FROST PROTECTION. If the bottom of the crawl space serving as the dwelling foundation 6 is less than 48 inches below adjacent grade, the foundation shall be frost protected in accordance with Table 322.31-1 for frost protected slabs. (2) VAPOR RETARDE…

SPS 322.35 Thermally isolated sunrooms. (1) The minimum opaque ceiling insulation R-value shall be R-24. The minimum opaque wall R-value shall be R-13. (2) The maximum fenestration U-factor shall be 0.50 and the maximum skylight U-factor shall be 0.75. (3) New walls, windows and …

SPS 322.36 Fenestration. (1) AVERAGE U-FACTORS. An area-weighted average of fenestration products may be used to satisfy the U-factor requirements. (2) MAXIMUM FENESTRATION U-FACTOR. The area weighted average maximum fenestration U-factor permitted using trade offs from s. SPS 32…

SPS 322.37 Air leakage. (1) GENERAL. The requirements of this section apply to those components that separate interior conditioned space from a garage or an unconditioned space. (2) WINDOW AND DOOR ASSEMBLIES. (a) General. Except as specified in par. (b), windows, skylights and s…

SPS 322.38 Vapor retarders. (1) GENERAL. (a) Definition. Under this section, a vapor retarder is a material with no intrinsic thermal or structural properties that has a rating of 1.0 perm or less when tested in accordance with ASTM standard E 96, Procedure A. (b) Continuity. 1. …

SPS 322.39 Ventilation and moisture control. (1) GENERAL. Design and construction shall prevent deterioration from moisture condensation and ice damming. (2) VENTED ATTICS. (a) 1. Except as allowed under subd. 6., where air-permeable ceiling or attic insulation is installed in a …

SPS 322.40 Indoor temperatures and equipment sizing. (1) GENERAL. The indoor temperatures listed under sub. (2) shall be used to determine the total dwelling heat loss and to select the size of the of the heating equipment. (2) INDOOR DESIGN TEMPERATURES. Unheated, non-habitable …

SPS 322.41 Temperature control. (1) GENERAL. Each system shall be provided with an adjustable thermostat for the regulation of temperature. (2) CIRCULATING HOT WATER SYSTEMS. Circulating hot water systems shall include an automatic or readily accessible manual switch to turn off …

SPS 322.42 Duct systems. (1) Supply and return heating ducts, or portions thereof, that are not located completely within the thermal envelope, shall be provided with insulation with a thermal resistance of at least R-8. (1m) Cooling supply ducts that pass through unconditioned s…

SPS 322.43 Duct and plenum sealing. (1) Duct systems with joints not located entirely within the conditioned space or with joints located on the unconditioned side of stud bays, joist cavities and similar spaces, shall be sealed in accordance with this section. (2) Sealing shall …

SPS 322.44 Pipe insulation. (1) Mechanical system piping capable of carrying fluids above 105nF (41nC) or below 55nF (13nC) shall be insulated to a minimum of R-3. (2) All circulating service hot water piping shall be insulated to at least R-2. Circulating hot water systems shall…

SPS 322.45 Air conditioner and heat pump efficiencies. (1) Heating and cooling equipment shall meet the minimum efficiency requirements in Table 322.45 when tested and rated in accordance with the applicable test procedure. (2) The efficiency shall be verified through certificati…

SPS 322.46 Replacement furnace and boiler efficiencies. (1) A replacement furnace in existing construction may meet only the prevailing federal efficiency standard provided the duct distribution system is sealed and tested at 0.02 inches water gage across the entire system, inclu…

SPS 322.47 Equipment requirements. (1) Mechanical ventilation outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating. (2) Snow melt system controls. Snow- and ice-melting systems, supplied through energy se…

SPS 322.48 Indoor Pools. Indoor pools shall be provided with energy-conserving measures in accordance with all of the following: (1) POOL HEATERS. All pool heaters shall be equipped with a readily accessible on-off switch to allow shutting off the heater without adjusting the the…

SPS 322.49 Lighting Equipment. A minimum of 50 percent of the lamps in permanently installed lighting fixtures shall be high-efficacy lamps. Subchapter VI — Simulated Performance Alternative SPS 322.50 General. This subchapter establishes crite- ria for compliance using simulated…

SPS 322.51 Performance-based compliance. Compliance based on simulated energy performance requires that a proposed dwelling be shown to have an annual energy cost that is less than or equal to the annual energy cost of the standard reference design.

SPS 322.52 Documentation. (1) COMPLIANCE SOFTWARE TOOLS. Documentation verifying that the methods and accuracy of the compliance software tools conform to the provisions of this subchapter shall be provided to the inspector. Note: REM/Rate is an acceptable software program for de…

SPS 322.53 Calculation procedure. (1) GENERAL. Except as specifically allowed under this section, the standard reference design and proposed design shall be configured and analyzed using identical methods and techniques. (2) REFERENCE AND PROPOSED DESIGNS. The standard reference …

SPS 323.01 Scope. The provisions of this chapter shall apply to the design, installation and construction of all heating, ventilating and air conditioning systems in dwellings covered by this code. History: Cr. Register, November, 1979, No. 287, eff. 6-1-80. Subchapter II — Desig…

SPS 323.02 Design. Every dwelling shall be equipped with a heating system designed in accordance with this section. Heating equipment requirements may be waived for recreational dwellings used only during the non-heating season. Where a cooling system is provided, the cooling req…

SPS 323.03 Selection of equipment. All heating and central cooling equipment shall be selected on the basis of airhandling capacity, pumping capacity, and thermal capacity to handle the calculated design heating or cooling load. History: Cr. Register, November, 1979, No. 287, eff…

SPS 323.04 Types and location of equipment. (1) GENERAL. (a) All heat producing appliances and cooling appli- 2 ances shall be listed by a testing agency acceptable to the department. (b) Installation and maintenance of gas-fueled appliances shall comply with the appliance listin…

SPS 323.045 Solid-fuel-burning appliances. SPS 323.05 Safety controls. SPS 323.06 Combustion air.

SPS 323.05 Safety controls. High limit, maximum outlet air temperature and similar safety controls shall be provided on heating equipment. History: Cr. Register, November, 1979, No. 287, eff. 6-1-80.

SPS 323.06 Combustion air. (1) SCOPE. (a) Naturally vented appliances and other appliances that require air for combustion and dilution of flue gases to be taken from within the building shall comply with this section. (b) Appliances that are provided with a direct supply of outs…

SPS 323.062 Mechanical draft systems.

SPS 323.065 Equipment maintenance information. Dampers, registers and grilles. Piping. Subchapter VI — Fuel Supply Systems SPS 323.16 Fuel storage. Subchapter IV — Delivery Systems SPS 323.07 Air distribution systems. SPS 323.08 Ductwork. Subchapter VII — Equipment Location and O…

SPS 323.07 Air distribution systems. (1) SIZING. All air distribution systems shall be sized using the velocities and static pressure losses listed in Table 323.07. TABLE 323.07 DUCT VELOCITIES Designation Main trunk duct Branch duct Branch riser Outdoor intake Grilles or opening…

SPS 323.08 Ductwork. (1) DUCT USE. Ducts designed for the transmission of air shall be used for no other purpose. (2) INTERIOR DUCTS. All interior ducts shall be constructed in accordance with the following: (a) Supply and return air ducts. Supply and return air ducts shall compl…

SPS 323.09 Dampers, registers and grilles. (1) VOLUME AND BACKDRAFT DAMPERS. (a) Volume duct dampers shall be provided to permit balancing of the system. (b) Volume dampers shall be provided with access. Note: Acceptable means of access include a manufactured access panel, an air…

SPS 323.10 Piping. (1) PIPE SIZES AND ARRANGEMENT. All steam and hot water supply and return piping, air-line piping and auxiliary equipment shall be of appropriate sizes, elevations and arrangements to accomplish the calculated results without stress or other detriment. Note: Th…

SPS 323.11 General requirements. (1) TYPES OF CHIMNEYS AND VENTS. All heating appliances using solid, liquid or gas fuels shall be vented to the outside by an all-fuel factorybuilt, masonry chimney or other listed venting system designed to remove the products of combustion. (2) …

SPS 323.12 Masonry chimneys. Masonry chimneys shall conform to the requirements of s. SPS 321.30. History: Cr. Register, November, 1979, No. 287, eff. 6-1-80; r. and recr. Register, February, 1985, No. 350, eff. 3-1-85; am. (8), Register, March, 1992, No. 435, eff. 41-92; r. and …

SPS 323.13 Factory-built chimneys or vents. Factory-built chimneys or vents shall be of an approved type. Note: The department recognizes as approved, factory-built chimneys or vents designated as Xresidential type and building heating appliance,Y Xbuilding heating appliance,Y XB…

SPS 323.14 Gas vents. (1) GENERAL. (a) All gas-fired equipment shall be provided with vent pipes conforming with s. SPS 323.15 (2) (e), unless the manufacturer specifies other materials. (b) Plastic pipes and fittings used in venting flue gas shall bear the manufacturer[s identif…

SPS 323.15 Chimney connectors, smoke pipes and stovepipes. (1) DEFINITION. Chimney connectors, smoke pipes or stovepipes are passages for conducting the products of combustion from a fuel-fired appliance to the chimney. (2) CONSTRUCTION AND INSTALLATION. The construction and inst…

SPS 323.155 Multiple appliance venting.

SPS 323.156 Condensate drains. Subchapter III — Heating Equipment SPS 323.03 Selection of equipment. SPS 323.04 Types and location of equipment.

SPS 323.16 Fuel storage. (1) LP GAS STORAGE TANKS. (a) All LP gas storage tanks shall be constructed, installed and maintained to conform with the applicable sections of ch. SPS 340. (b) LP gas tanks may not be located inside dwellings. (c) LP gas tanks shall have welded steel su…

SPS 323.17 Equipment location. (1) OUTDOOR EQUIPMENT. Outdoor equipment shall be located so as to not restrict the air flow or recirculation of air. Outdoor equipment so located as to be subject to damage shall be protected. (2) INDOOR EQUIPMENT. All indoor equipment shall be ins…

SPS 323.18 Operation. (1) INSTRUCTIONS. Written instructions shall be provided the owner for the operation and maintenance of the system and equipment. 14 (2) FINAL TEST REQUIRED. The installer shall test and balance every heating, ventilating and air conditioning system. History…

SPS 324.01 Electrical standards. (1) All electrical wiring, installations, equipment and materials used in the construction of dwellings shall comply with the requirements of the Note: A light over the stairs is not required, but a light outside the door is. History: Cr. Register…

SPS 325.01 Plumbing Standard. All plumbing design, construction, installation, materials, and inspection used in the construction of one- and 2-family dwellings shall comply with the requirements of the Wisconsin Plumbing Code, chs. SPS 381 to 387. Note: This section is shown as …

SPS 325.02 Sanitation facilities and devices. The design, construction, installation and maintenance of sanitation facilities and devices such as composting toilets, incinerating toilets and privies to serve one- and 2-family dwellings shall comply with the requirements of ch. SP…