Pulmonary Medicine Service Design Guide - Office of Construction ...

PULMONARY MEDICINE SERVICE NOVEMBER 29, 2011
The air conditioning system serving the Pulmonary Medicine Service shall be designed to operate in occupied/
unoccupied modes to suit the applicable schedules.
Room Data Sheet Criteria
The number of occupants, air conditioning temperatures, noise criteria, and room pressurization indicated on
the Room Data Sheets in the Guide Plates for select rooms of this section are for the purpose of establishing
general planning parameters. The design architect and engineer (A/E) shall verify the actual occupant load
and air conditioning load for each specific room on each individual project. Verify equipment loads for actual
equipment to be furnished within that room for the specific project. While specific outside air quantities are
noted on the Room Data Sheet for each Guide Plate room, the percent of outside air shall be based on the
total supply air quantities determined for each specific project.
Air Quality and Distribution
In general, clean areas shall be maintained at positive air balance and soiled areas shall be maintained at
negative air balance with respect to adjoining areas. Bronchoscopy Procedure Rooms require negative air
pressure to reduce the risk from airborne infectious agents.. Specific pressure requirements are noted on the
Room Data Sheet for each Guide Plate room.
Corridors shall not be used to supply or exhaust/return air from adjacent rooms, except that they may be used
to ventilate Housekeeping Aides Closets (HAC’s) and small electrical or telephone closets opening directly
onto them. Ex-filtration and infiltration from positive or negative pressure rooms adjacent to a corridor must be
considered in balancing air flow.
Transfer air should not be more than 100 CFM (2.8m3/min) per undercut door within the Pulmonary Medicine
Service.
Care should be taken to minimize the short circuiting of air between supply and return or exhaust openings
in rooms, with careful placement of supply registers and return grills inside rooms such as Bronchoscopy
Procedure and Pulmonary Test rooms. See Reflected Ceiling Plans for key rooms shown in Guide Plates.
Exhaust System
Controlling odor with proper exhaust is critical within the Pulmonary Medicine Service. The HVAC design shall
provide for exhaust air from spaces to control the transfer of odors and provide proper room pressurization and
proper air changes per hour that may be required by the VA HVAC Design Manual or code standards.
A dedicated exhaust system is required for spaces housing TB patients. The dedicated exhaust shall not be
mixed with any other exhaust and should be discharged outdoors as specified in VA HVAC Design Manual.
DESIGN STANDARDS
SECTION 4 - PAGE 39