SPS 327.38(2)(a)2.
2. Automatic or gravity dampers that close when the system is not operating shall be provided for outdoor air intake and exhaust.
SPS 327.38(2)(b)1.1. `General.' Except as provided under
subd. 2., mechanical ventilation systems shall be balanced.
SPS 327.38(2)(b)2.
2. `Exception.' Passive intake air ducts providing makeup air for intermittent exhaust fans shall be sized to provide at least 40% of the total air that would be exhausted with all intermittent exhaust ventilation in the camping unit operating simultaneously.
SPS 327.38(2)(b)3.a.a. Kitchen range hoods that exhaust air from the kitchen area are considered as exhaust ventilation for balancing and makeup purposes.
SPS 327.38(2)(b)3.b.
b. Kitchen range hoods that are listed and installed to recirculate air without exhausting it are not required to be balanced.
SPS 327.38(2)(b)4.a.a. Infiltration may be considered as makeup air for balancing purposes only where there are no naturally vented space- or water-heating appliances in the camping unit.
SPS 327.38(2)(b)4.b.
b. For the purpose of complying with this subdivision, naturally vented space-heating or water-heating appliances are those that take combustion or dilution air from inside the camping unit, including unsealed fireplaces and draft hood appliances with power venting.
SPS 327.38 Note
Note: Whole-house fans that are used in the summer to bring cool night air in through open windows and exhaust into the attic are considered to be a supplemental cooling system rather than part of the ventilation system.
SPS 327.38(2)(c)
(c)
Rooms with toilets, tubs, or showers. Any room with a toilet, tub, or shower shall be provided with exhaust ventilation capable of exhausting 50 cubic feet per minute on an intermittent basis or 20 cubic feet on a continuous basis.
SPS 327.38(3)
(3) Controls. The temperature rise through the equipment shall not exceed 100 degrees Fahrenheit unless listed. Controls shall be provided to maintain the inside temperature. Where forced, warm-air systems are used, controls shall be installed to control air movement.
SPS 327.38 History
History: EmR1703: emerg. cr., eff. 2-6-17;
CR 17-017: cr.
Register March 2018 No. 747, eff. 4-1-18.
SPS 327.39
SPS 327.39 Selection of equipment. All heating and central cooling equipment shall be selected on the basis of air-handling capacity, pumping capacity, and thermal capacity to handle the calculated design heating or cooling load.
SPS 327.39 History
History: EmR1703: emerg. cr., eff. 2-6-17;
CR 17-017: cr.
Register March 2018 No. 747, eff. 4-1-18.
SPS 327.40
SPS 327.40 Types and location of equipment. SPS 327.40(1)(a)(a) All heat producing appliances and cooling appliances shall be listed by a testing agency acceptable to the department.
SPS 327.40(1)(b)
(b) Installation and maintenance of gas-fueled appliances shall comply with the appliance listing and the requirements of NFPA 54, National Fuel Gas Code, except as otherwise required under this subchapter.
SPS 327.40(2)(a)(a) The input and output capacity of furnaces shall be listed on the nameplate. All nameplates shall show evidence that the equipment has been listed by a recognized testing laboratory.
SPS 327.40(2)(b)
(b) Furnaces shall be fired with the fuel for which they have been approved. Fuels shall be supplied to the furnace in the volume and at the pressure required on the label.
SPS 327.40(3)(a)(a) A water heater with a tank may be installed in a closet located in a bathroom or bedroom where the closet is used exclusively for the water heater, where the enclosed space has a weather-stripped solid door with a self-closing device, and where all air for combustion is obtained from the outdoors.
SPS 327.40 Note
Note: Section
SPS 327.41 still requires combustion air to be provided to the appliance.
SPS 327.40(3)(b)
(b) A tankless water heater may be installed in any closet or cabinet. The tankless water heater shall be installed in accordance with the manufacturer's installation instructions.
SPS 327.40 History
History: EmR1703: emerg. cr., eff. 2-6-17;
CR 17-017: cr.
Register March 2018 No. 747, eff. 4-1-18.
SPS 327.41(1)(a)(a) Naturally vented appliances and other appliances that require air for combustion and dilution of flue gases to be taken from within the camping unit shall comply with this section.
SPS 327.41(1)(b)
(b) Appliances that are provided with a direct supply of outside air for combustion in accordance with the manufacturer's installation instructions and listing are not required to comply with this section.
SPS 327.41(1)(c)
(c) Where the appliance listing and manufacturer's instructions are more stringent than the provisions of this section, the listing and manufacturer's instructions apply.
SPS 327.41(1)(d)
(d) Listed fireplace stoves are not required to comply with this section if permitted in the manufacturer's instructions.
SPS 327.41(1)(e)
(e) Listed factory-built fireplaces shall comply with the manufacturer's recommendations.
SPS 327.41(2)
(2) Methods for providing air. Air for combustion and dilution shall be provided in accordance with one of the following:
SPS 327.41(2)(a)
(a) Air may be provided from inside the camping unit in accordance with
sub. (3).
SPS 327.41(2)(b)
(b) Air may be provided from outside the camping unit in accordance with
sub. (4).
SPS 327.41(2)(c)
(c) The appliance may be installed in accordance with its listing and manufacturer's instructions.
SPS 327.41(2)(d)
(d) An engineered system providing an adequate supply of air for combustion ventilation and dilution of flue gases may be installed if approved by the department.
SPS 327.41(3)(a)1.1. The equipment shall be located in a space with a volume not less than 50 cubic feet per 1000 Btu/h of the combined input rating of all fuel-burning appliances drawing combustion and dilution air from that space.
SPS 327.41(3)(a)2.
2. The space may be made up of more than one room if the rooms are connected through doorways without doors or connected through sets of openings described in
par. (b).
SPS 327.41(3)(b)1.1. When needed to connect rooms, two openings shall be provided, one within one foot of the ceiling of the room and one within one foot of the floor.
SPS 327.41(3)(b)3.
3. The net free area of each opening shall be a minimum of one square inch per 1000 Btu/h of combined input rating of the fuel burning appliances drawing combustion and dilution air from the communicating rooms, but shall be not less than 100 square inches.
SPS 327.41(4)(a)(a) When air for combustion and dilution is provided from outside the camping unit, as allowed under
sub. (2) (b), one of the methods specified in
pars. (b) to
(d) shall be used.
SPS 327.41(4)(b)
(b) Openings may be provided to connect rooms containing appliances to the outdoors.
SPS 327.41(4)(b)1.a.a. Two openings shall be provided, one within one foot of the ceiling of the room and one within one foot of the floor.
SPS 327.41(4)(b)1.b.
b. Openings may connect directly to the outdoors or to the outdoors through a horizontal or vertical duct.
SPS 327.41(4)(b)2.
2. The net free area of each direct opening to the outdoors not using a duct shall be a minimum of one square inch per 4000 Btu/h of combined input rating of the fuel-burning appliances drawing combustion and dilution air from the room.
SPS 327.41(4)(b)3.a.a. The net free area of each opening connected to the outdoors through a horizontal duct shall be a minimum of one square inch per 2000 Btu/h of combined input rating of the fuel-burning appliances drawing combustion and dilution air from the room.
SPS 327.41(4)(b)3.b.
b. The cross-sectional area of the duct shall be equal to or greater than the required size of the opening.
SPS 327.41(4)(b)4.a.a. The net free area of each opening connected to the outdoors through a vertical duct shall be a minimum of one square inch per 4000 Btu/h of combined input rating of the fuel-burning appliances drawing combustion and dilution air from the room.
SPS 327.41(4)(b)4.b.
b. The cross-sectional area of the duct shall be equal to or greater than the required size of the opening.
SPS 327.41(4)(c)1.1. Where all appliances drawing air for combustion and dilution from the room are gas appliances, air may be provided via a single opening to connect the room to the outdoors in accordance with this paragraph.
SPS 327.41(4)(c)2.b.
b. The opening may connect directly to the outdoors, may connect to the outdoors through a horizontal duct, or may connect to the outdoors through a vertical duct.
SPS 327.41(4)(c)3.a.a. The net free area of the opening shall be a minimum of one square inch per 3000 Btu/h of combined input rating of the fuel-burning appliances drawing combustion and dilution air from the room, and not less than the combined cross-sectional flow areas of the appliance flue collars or draft hood outlets.
SPS 327.41(4)(c)3.b.
b. The cross-sectional area of the duct shall be equal to or greater than the required size of the opening.
SPS 327.41(4)(c)4.
4. The appliances shall have a minimum clearance to the surfaces of the room of one inch at the sides and back of the appliance and 6 inches at the front of the appliance.
SPS 327.41(4)(d)1.1. A combination of openings to the outside and openings to other rooms may be used in accordance with this paragraph.
SPS 327.41(4)(d)2.a.a. One opening shall connect directly to the outdoors, connect to the outdoors through a horizontal duct, or connect to the outdoors through a vertical duct.
SPS 327.41(4)(d)2.c.
c. The net free area of the opening shall be a minimum of one square inch per 5000 Btu/h of combined input rating of the fuel burning appliances drawing combustion and dilution air from the room.
SPS 327.41(4)(d)2.d.
d. The cross-sectional area of a duct, if used, shall be equal to or greater than the required size of the opening.
SPS 327.41(4)(d)3.a.a. The equipment shall be located in a space with a volume not less than 50 cubic feet per 1000 Btu/h of the combined input rating of all fuel-burning appliances installed in that space.
SPS 327.41(4)(d)3.b.
b. The space may be made up of more than one room if the rooms are connected through openings without doors or connected through sets of openings described in
subd. 4.
SPS 327.41(4)(d)4.a.a. When needed to connect rooms, two openings shall be provided, one within one foot of the ceiling of the room and one within one foot of the floor.
SPS 327.41(4)(d)4.c.
c. The net free area of each opening shall be a minimum of one square inch per 1000 Btu/h of combined input rating of the fuel burning appliances drawing combustion and dilution air from the communicating rooms, but shall be not less than 100 square inches.
SPS 327.41(5)(a)(a) The required size of openings for combustion and dilution air shall be based on the net free area of each opening.
