R432-12-20. Ventilation

(1) All rooms and areas in the facility shall have provision for positive ventilation.

(a) While natural window ventilation for nonsensitive areas and resident rooms may be utilized where weather permits, mechanical ventilation shall be provided for interior areas and during periods of temperature extremes.

(b) Fans serving exhaust systems shall be located at the discharge end and shall be conveniently accessible for service.

(2) Fresh air intakes shall be located as far as possible from exhaust outlets of ventilating systems, combustion equipment stacks, plumbing vents, or from areas which may collect vehicular exhaust or other noxious fumes.

(3) Furnace rooms shall be provided with sufficient outdoor air to maintain equipment combustion rates and to limit work station temperatures to an Effective Temperature of 90 degrees F (32.5 degrees C). When the ambient outside air temperature is higher than 90 degrees F, then the maximum temperature may be 97 degrees F (36 degrees C).

(4) Exhaust hoods in food-preparation centers shall comply with R392, the Utah Department of Health Food Service Sanitation Regulations. All hoods over cooking ranges shall be equipped with grease filters.

(5) Non-resident as well as resident areas where specific requirements are not given shall be ventilated in accordance with ASHRAE Standard 62-2004, "Ventilation for Acceptable Indoor Air Quality Including Requirements for Outside Air."

(6) Air from areas with odor problems, including toilet rooms, baths, soiled linen storage and housekeeping rooms, shall be exhausted to the outside and not recirculated.

(7) In Level II facilities, fans and dampers shall be interconnected so that activation of dampers will automatically shut down all but exhaust fans.

(8) Supply and return systems shall be in duct. Common returns using corridors or attic spaces as plenums are prohibited.