SPS 323.09
SPS 323.09
Dampers, registers and grilles. SPS 323.09(1)(a)(a) Volume duct dampers shall be provided to permit balancing of the system.
SPS 323.09 Note
Note: Acceptable means of access include a manufactured access panel, an air grille used as a cover, a plastic ceiling cap or a damper accessible through an air diffuser or grille.
SPS 323.09(1)(c)
(c) Supply ducts may not terminate in a garage unless a backdraft damper is provided.
SPS 323.09(2)(a)(a) Supply air registers. All supply air outlets shall be provided with registers or devices which will provide a uniform distribution of air.
SPS 323.09(2)(b)
(b) Return air grilles. Return air grilles shall not be located in bathrooms, kitchens, garages, utility spaces or a confined space in which a draft diverter or draft regulator is located. All other habitable spaces shall have permanent openings to a return air grille equal in area to the supply outlet serving those areas. At least one return air opening shall be provided for each floor.
SPS 323.09 History
History: Cr.
Register, November, 1979, No. 287, eff. 6-1-80;
CR 08-043: renum. (1) to (1) (a), cr. (1) (b)
Register March 2009 No. 639, eff. 4-1-09.
SPS 323.10(1)(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.
SPS 323.10 Note
Note: The sizes of pipe to be used for mains and risers may be selected from the ASHRAE Guide and Data Book, published by the American Society of Heating, Refrigerating and Air Conditioning Engineers; or the manuals published by the Institute of Boiler and Radiator Manufacturers or the Mechanical Contractors Association of America.
SPS 323.10(2)
(2) Expansion and contraction. The piping for the heating system shall be equipped with anchors, expansion swings or joints, supports and similar devices to relieve stress and strain caused by temperature change of the pipe material.
SPS 323.10(3)
(3) Pipe insulation. Unguarded steam, hot water supply and return piping shall be covered with insulating material where the pipes pass through occupied areas and the surface temperature exceeds 180
° F.
SPS 323.10(4)
(4) Steam and hot water pipes. No pipe carrying hot water or steam at a surface temperature exceeding 250
° F shall be placed within one inch of any combustible material, pass through a combustible floor, ceiling or partition unless the pipe is protected by a metal sleeve one inch larger in diameter than the pipe or with approved pipe covering.
SPS 323.10(5)
(5) Balancing. Balancing cocks shall be provided in each circuit of a hot water distribution system.
SPS 323.10 History
History: Cr.
Register, November, 1979, No. 287, eff. 6-1-80.
SPS 323.11(1)
(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 factory-built, masonry chimney or other listed venting system designed to remove the products of combustion.
SPS 323.11(2)(a)(a) Chimneys. All listed factory manufactured chimneys depending on a principle of gravity for the removal of the products of combustion shall terminate at the location specified in the product listing. For masonry chimneys or where termination location is not specified as a part of the listing, the chimney shall extend at least 3 feet above the highest point where the chimney passes through the roof of the building, and at least 2 feet higher than any ridge, peak, wall, or roof within 10 feet horizontally of the chimney.
SPS 323.11(2)(b)
(b) Vents. Gas and oil appliance vents shall terminate in locations specified in their listings.
SPS 323.11(3)
(3) Sizing. Vents for new or replacement equipment shall be sized to adequately exhaust combustion products from the dwelling.
SPS 323.11 Note
Note: The department recommends vent sizing in accordance with NFPA 54, National Fuel Gas Code or its appendix.
SPS 323.11 History
History: Cr.
Register, November, 1979, No. 287, eff. 6-1-80; renum. (intro) to (2) to be (1) to (3) and am. (1),
Register, February, 1985, No. 350, eff. 3-1-85; r. (3),
Register, January, 1989, No. 397, eff. 2-1-89; am. (2),
Register, March, 1992, No. 435, eff. 4-1-92
; cr. (3),
Register, November, 1995, No. 479, eff. 12-1-95.
SPS 323.12
SPS 323.12
Masonry chimneys. Masonry chimneys shall conform to the requirements of
s. SPS 321.30.
SPS 323.12 History
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. 4-1-92
; r. and recr., November, 1995, No. 479, eff. 12-1-95; correction made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672.
SPS 323.13
SPS 323.13
Factory-built chimneys or vents. Factory-built chimneys or vents shall be of an approved type.
SPS 323.13 Note
Note: The department recognizes as approved, factory-built chimneys or vents designated as “residential type and building heating appliance," “building heating appliance," “B," “BW," and “L" types listed by Underwriters' Laboratories, Inc.
SPS 323.13(1)
(1) Residential type and building heating appliance. An approved “residential type and building heating appliance" chimney may be used with liquid or gas-fired heating appliances where the flue gas temperature does not exceed 1000
° F continuously, and does not exceed 1400
° F for infrequent brief periods of forced firing.
SPS 323.13(2)
(2) Type “B". An approved type “B" gas vent may be used with a vented, recessed wall heater.
SPS 323.13(3)
(3) Type “BW". An approved type “BW" gas vent may be used with a vented, recessed wall heater.
SPS 323.13 History
History: Cr.
Register, November, 1979, No. 287, eff. 6-1-80; am. (1),
Register, March, 1992, No. 435, eff. 4-1-92.
SPS 323.14(1)(b)
(b) Plastic pipes and fittings used in venting flue gas shall bear the manufacturer's identification data.
SPS 323.14(2)(a)1.1. All venting for clothes dryers, including for electric dryers, shall be rigid and smooth-walled. The connection to the dryer shall be made in accordance with the manufacturer's recommendations.
SPS 323.14 Note
Note: Section
SPS 322.39 (6) requires all dryer venting to terminate outside the structure.
SPS 323.14(3)(a)(a) A venting system shall terminate at least 3 feet above any forced air inlet located within 10 feet horizontally. This provision does not apply to the combustion air intake of a direct-vent appliance.
SPS 323.14(3)(b)
(b) The venting system of other than a direct-vent appliance shall terminate at least 4 feet below, 4 feet horizontally from, or one foot above any door, window, or gravity air inlet into any building. The bottom of the vent shall be located at least 12 inches above grade.
SPS 323.14(3)(c)
(c) The vent terminal of a direct-vent appliance with an input of 10,000 Btu per hour or less shall be located at least 6 inches from any air opening into a building.
SPS 323.14(3)(d)
(d) The vent terminal of a direct-vent appliance with an input over 10,000 Btu per hour but not over 50,000 Btu per hour shall be located at least 9 inches from any air opening into a building.
SPS 323.14(3)(e)
(e) The vent terminal of a direct-vent appliance with an input over 50,000 Btu per hour shall be located at least 12 inches from any air opening into a building.
SPS 323.14(3)(f)
(f) The bottom of the vent terminal and the air intake of a direct-vent appliance shall be located at least 12 inches above grade.
SPS 323.14(3)(g)
(g) The exit terminal of a mechanical draft system shall be not less than 7 feet above grade where located within 3 feet of a public walkway that is intended for use by the general public.
SPS 323.14 History
History: Cr.
Register, November, 1979, No. 287, eff. 6-1-80; correction made under s. 13.93 (2m) (b) 7., Stats.,
Register, March, 1992, No. 435
; r. and recr.,
Register, November, 1995, No. 479, eff. 12-1-95; cr. (3),
Register, March, 2001, No. 543, eff. 4-1-01;
CR 02-077: am. (2) (a)
Register May 2003 No. 569, eff. 8-1-03; correction in (1), (2) (b) made under s. 13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672;
CR 15-041: renum. (1) to (1) (a), cr. (1) (b), renum. (2) (a) to (2) (a) 2. and am., cr. (2) (a) 1. Register December 2015 No. 720, eff. 1-1-16. SPS 323.15
SPS 323.15
Chimney connectors, smoke pipes and stovepipes. SPS 323.15(1)(1)
Definition. Chimney connectors, smoke pipes or stovepipes are passages for conducting the products of combustion from a fuel-fired appliance to the chimney.
SPS 323.15(2)
(2) Construction and installation. The construction and installation of chimney connectors of solid-fuel-burning appliances shall comply with
s. SPS 323.045 (4). The chimney connectors of all other fuel-fired appliances shall conform with the following requirements:
SPS 323.15(2)(a)
(a) Concealed space. No chimney connector shall pass through any outside window, door or combustible outside wall, nor be concealed in any closet, attic or similar space.
SPS 323.15(2)(b)
(b) Combustible partitions. Connectors for appliances shall not pass through walls or partitions constructed of combustible material unless they are guarded at the point of passage by:
SPS 323.15(2)(b)1.
1. Metal ventilated thimbles not less than 12 inches larger in diameter than the connector;
SPS 323.15(2)(b)2.
2. Metal or burned fireclay thimbles built in brickwork or other approved fireproofing materials extending not less than 8 inches beyond all sides of the thimble.
SPS 323.15(2)(c)
(c) Pitch and length. Chimney or vent connectors shall have no more than two 45
° offsets with the vertical. The horizontal length shall not exceed 75% of the total vertical height of the total venting system measured from the appliance outlet. Chimney or vent connectors shall be pitched at least 1/4-inch per foot from the appliance outlet collar vent to the chimney inlet.
SPS 323.15(2)(d)1.1. Manually operated dampers are prohibited in chimney or vent connectors of all appliances except wood-burning appliances.
SPS 323.15(2)(d)2.
2. A listed, automatically operated damper may be used with any heating appliance provided it is installed and used in accordance with the appliance and damper listing.
SPS 323.15(2)(e)
(e) Materials and thickness. Chimney or vent connectors serving liquid fuel or gas appliances shall conform to the type of material and thickness indicated in Table 323.15-A or 323.15-B.
SPS 323.15(2)(f)
(f) Clearance. Single wall metal connectors shall be installed with clearance to combustibles as indicated in Table 323.15-C. These clearances may be reduced if the combustible material is protected in accordance with the requirements of Table 323.04-B.
TABLE 323.15-A
TABLE 323.15-B
TABLE 323.15-C
CHIMNEY CONNECTOR AND VENT CONNECTOR CLEARANCES FROM COMBUSTIBLE MATERIALS (See Note 4)
-
See PDF for table 
SPS 323.15 Note
1 These clearances apply except if the listing of an appliance specifies different clearance, in which case the listed clearance takes precedence.
SPS 323.15 Note
2 If listed type L venting system piping is used, the clearance may be in accordance with the venting system listing.
SPS 323.15 Note
3 If listed type B or type L venting system piping is used, the clearance may be in accordance with the venting system listing.
SPS 323.15 Note
4 The clearances from connectors to combustible materials may be reduced if the combustible material is protected in accordance with Table 323.04-B.
SPS 323.15 History
History: Cr.
Register, November, 1979, No. 287, eff. 6-1-80; am. (2) (intro.) and (g), Tables 23.15-A and C, renum. (2) (d) to be ILHR 23.155,
Register, January, 1989, No. 397, eff. 2-1-89; r. (2) (c) and (f), renum. (2) (e), (g) and (h) to be (2) (c), (e) and (f), cr. (2) (d),
Register, March, 1992, No. 435, eff. 4-1-92; r. and recr. (2) (d),
Register, January, 1999, No. 517, eff. 2-1-99; correction in (2) (intro.), (e), (f), Table 323.15-C made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672.
SPS 323.155
SPS 323.155
Multiple appliance venting. Two or more listed gas-or liquid-fueled appliances may be connected to a common gravity-type flue provided the appliances are equipped with listed primary safety controls and listed shutoff devices and comply with the following requirements.
SPS 323.155(1)
(1) The appliances shall be located in the same story, except for engineered venting systems.
SPS 323.155(2)
(2) The appliances shall be joined at a manifold or Y-type fitting as close to the chimney as possible, unless the connector from each appliance enters a separate chimney inlet and the inlets are offset at least 12 inches vertically or the separate inlets occur at right angles to each other.
SPS 323.155(3)
(3) The chimney connector and chimney flue shall be sized to accommodate the total volume of flue gases. For gas-burning appliances the venting area shall be at least equal to the size of the largest vent connectors plus at least 50% of the area of the other vent connectors.
SPS 323.155 History
History: Renum. from ILHR 23.15 (2) (d) and am.
Register, January, 1989, No. 397, eff 2-1-89; r. (2), renum. (1) (intro.), (a) to (c) to be (intro.), (1) to (3),
Register, March, 1992, No. 435, eff. 4-1-92.
SPS 323.156
SPS 323.156
Condensate drains. Provisions shall be made so that condensate from heating equipment drains into the sanitary drain system.
SPS 323.156 History
History: Cr.
Register, January, 1989, No. 397, eff. 2-1-89.
SPS 323.16(1)(a)(a) All LP gas storage tanks shall be constructed, installed and maintained to conform with the applicable sections of
ch. SPS 340.
