06-06
HVAC DESIGN MANUAL
FOR REGIONAL OFFICE PROJECTS
DEPARTMENT OF VETERANS AFFAIRS
1. CRITERIA UNIQUE TO VA
1.1 GENERAL
This manual is presented as general guidance. It is for the guidance
of mechanical engineers and others in the design and renovation of
facilities for the Department of Veterans Affairs (VA). In order to
provide the latitude needed for design, new concepts, etc., deviations
may be made from the technical requirements provided professional
judgment is made that a safe, adequate, office quality level design
will result, and approval is obtained from the VA. Deviations from
those requirements included in Public Laws, Federal Regulations,
Executive Orders, and similar regulations and users special
requirements are not permitted. This manual contains some, but not
all, of the criteria pertinent to the design of HVAC systems for VA
Regional Office Projects.
1.2 DRAWINGS
The following information shall be shown on "MH" drawings.
A. HVAC system design including indoor steam piping. See Article 2 for
additional information.
B. Seismic design related to the HVAC systems.
C. Outdoor exposed (or, underground) chilled water piping.
1.3 VA GRAPHIC STANDARDS
The HVAC system design documentation shall use the VA standard
symbols, abbreviations, standard details, and equipment schedules.
1.4 CLIMATIC CONDITIONS
The outdoor climatic conditions shall be based on the requirements
outlined in Article 2 and information provided in the attached
climatic data for the VA facilities. These conditions are based on the
weather data listed in the ASHRAE Handbook of Fundamentals for the
weather stations which are located at or near the VA medical centers.
The local professional engineers may recommend more severe outdoor
climatic conditions, commonly used by them, for review and approval by
the VA.
1.5 DUCTWORK/PIPING
In the final design drawings (Construction Documents Phase) all
ductwork, regardless of sizes and/or complexity of layout(s), and
piping 152 mm (6") and above shall be shown in double line with all
fittings and accessories clearly shown and identified.
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