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28 Pa. Code § 205.66. Special ventilation requirements for new construction.

§ 205.66. Special ventilation requirements for new construction.

 (a)  Ventilation for new construction shall conform to the following:

PressureMinimum AirMinimum
RelationshipChanges ofTotal AirAll AirRecirculated
to AdjacentOutdoor AirChangesDirectlywithin
Area DesignationAreasPer HourPer Hourto OutdoorsRoom Units
Resident Room Equal 2  2 Optional Optional
Resident Area Corridor Equal Optional  2 Optional Optional
Physical therapy Negative 2  6 Optional Optional
Occupational therapy Negative 2  6 Optional Optional
Soiled workroom or soiled holding Negative 2 10 Yes No
Clean workroom or clean holding Positive 2  4 Optional Optional
Toilet room Negative Optional 10 Yes No
Bathroom Negative Optional 10 Yes No
Janitor’s closet Negative Optional 10 Yes No
Sterilizer equipment room Negative Optional 10 Yes No
Linen and trash
chute rooms
Negative Optional 10 Yes No
Food preparation center Equal 2 10 Yes Yes
Warewashing room Negative Optional 10 Yes Yes
Dietary day storage Equal Optional  2 Yes No
Laundry, general Equal 2 10 Yes No
Soiled linen sorting and storage Negative Optional 10 Yes No
Clean linen storage Positive Optional  2 Yes No
Special Care Room/IsolationNegative2 6YesNo

 (b)  Central air systems shall be provided with filters having a minimum efficiency of 25% based on ASHRAE Standard No. 52-68 and certified by an independent testing agency. Central air systems shall have a manometer installed across each filter bed.

 (c)  Air supply systems shall be operated mechanically. Air exhaust and return systems shall be operated mechanically, except for air not required to be exhausted directly outdoors as indicated in subsection (a). Where subsection (a) requirements for outdoor air is optional, this air may be supplied directly by transfer ducts or grilles to adjacent spaces without being filtered through a central system. Air may not be transferred to or from corridors, to or from adjacent spaces, except as permitted in the applicable edition of the National Fire Protection Association 101 Life Safety Code which is currently adopted by the Department.

 (d)  The dietary dry storage and kitchenware washing rooms may use direct air from the kitchen without being filtered through a central system.

 (e)  The ventilation rates indicated in subsection (a) are minimum mandatory rates for the area listed and may not be construed as precluding the use of higher rates. For areas not listed, such as dining rooms, lounge and recreation rooms, solaria, and the like, mechanical ventilation rates are optional, but where mechanical ventilation is provided, the supply air shall be obtained from the outdoors through individual room units or from central systems. The unlisted room areas, if ventilated, shall contain an equal pressure relationship.

 (f)  Where mechanical ventilation is not mandatory or provided, the areas may be ventilated by outside windows that can be easily opened and closed.

 (g)  Outdoor air intakes may be no less than 25 feet from waste air discharges, such as discharge from ventilation systems, combustion stacks, plumbing vents, vehicle exhaust and the like. The bottom of outdoor air intakes serving central systems and kitchens may not be less than 3 feet above the finished grade or roof level.

 (h)  Ventilation air openings which are located near floors shall be installed not less than 3 inches above the finished floor.

 (i)  Air quantities in cubic feet per minute shall be indicated on the drawings for room supply, return and exhaust ventilation openings.


   The provisions of this §  205.66 amended under section 803 of the Health Care Facilities Act (35 P. S. §  448.803); and section 2102(g) of The Administrative Code of 1929 (71 P. S. §  532(g)).


   The provisions of this §  205.66 adopted August 29, 1975, effective September 1, 1975, 5 Pa.B. 2233; amended January 31, 1987, effective July 1, 1987, 17 Pa.B. 514; amended July 23, 1999, effective July 24, 1999, 29 Pa.B. 3999. Immediately preceding text appears at serial pages (242531) to (242533).

Cross References

   This section cited in 28 Pa. Code §  205.21 (relating to special care room).

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