HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
General. This section provides HVAC design requirements for
DoD medical, dental, medical training, and medical research facilities.
The primary requirement of the HVAC system(s) in a medical facility is the
support of medical function and the assurance of occupant health, comfort,
and safety. The HVAC system functions not only to maintain minimum
requirements of comfort and ventilation, but is an essential tool for the
control of infection, removal of noxious odors, dilution and expelling of
contaminants, and establishment of special environmental conditions
conducive to medical procedures and patient healing. Subject to the above,
appropriate consideration shall be given to the HVAC design to ensure
to future facility modification or expansion.
Applicability. This criteria applies to new and existing
medical facilities including hospitals, medical and dental clinics,
veterinary clinics, medical supply warehouses, medical training facilities,
and medical research laboratories. Applicability to existing facilities is
restricted to upgrade or replacement projects, and for those specific
systems or services included in the scope of the project authorization.
For existing facilities, when complete compliance with the technical
criteria of this section is not economically practicable, consideration
shall be given to substitution of other recognized industry standards or
criteria upon application to the Healthcare Facilities Steering Committee
or TMA/DMFO as provided under Section 02 of this document. All facilities
shall comply with the applicable standards of the National Fire Protection
Supporting Documents. This guidance may be supplemented by the
individual military departmental publications, including Architect-Engineer
Instructions (AEIs), Technical Manuals (TMs), Engineering Technical Letters
(ETLs), project-specific design instructions, and other criteria. Minimum
HVAC design criteria shall be in accordance with the latest editions of the
American Society of Heating, Refrigerating, and Air Conditioning Engineers
(ASHRAE) publications (reference 8a), the American Council of Government
Hygienists (ACGIH) Publication "Manual of Recommended Practices for
Industrial Ventilation" (reference 8b), and the National Fire Protection
Association (NFPA) Standards (references 8c, 8d, 8e, 8f, 8g, and 8h), as
well as applicable governmental regulations. Other industry and government
standards shall be utilized for HVAC design as referenced herein.
Weather Data. Weather data shall be obtained from the most
recent edition of the Joint Services Manual TM 5-785, NAVFAC P-89, AFM 88-
29, "Engineering Weather Data" (reference 8i). If given military
installations have access to more recent or accurate information of weather
conditions in their region, designers shall coordinate use of this
information with the service design agent.
Interior Design Conditions.
Interior design conditions shall
be in accordance with Appendix A.