Section SPS 327.38 - Design Where a heating system is provided in a camping unit, the heating system shall be designed in accordance with this section. Where a cooling system is provided in a camping unit, the cooling requirements of this section shall be met.
(1) DISTRIBUTION SYSTEMS. Distribution systems shall be sized and located to satisfy the heating and cooling loads of each conditioned space.(2) VENTILATION. (a)General.1. All exhaust vents shall terminate outside the camping unit.2. Automatic or gravity dampers that close when the system is not operating shall be provided for outdoor air intake and exhaust.(b)Balancing.1. `General.' Except as provided under subd. 2., mechanical ventilation systems shall be balanced.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.3. `Kitchen range hoods.' a. Kitchen range hoods that exhaust air from the kitchen area are considered as exhaust ventilation for balancing and makeup purposes.b. Kitchen range hoods that are listed and installed to recirculate air without exhausting it are not required to be balanced.4. `Infiltration.' 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.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. 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.
(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.(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.Wis. Admin. Code Department of Safety and Professional Services SPS 327.38
Adopted by, EmR1703: emerg. cr., eff. 2-6-17; CR 17-017: cr. Register March 2018 No. 747, eff. 4/1/2018