06-06
HVAC DESIGN MANUAL
FOR DOMICILIARY AND NURSING HOME CARE UNITS
DEPARTMENT OF VETERANS AFFAIRS
1. CRITERIA UNIQUE TO VA
1.1 GENERAL
In this section requirements unique to the VA are described.
Compliance to everything in this design manual is mandatory.
1.2 DRAWINGS
The following information shall be shown on "MH" drawings:
A. HVAC system design shall include all indoor steam and condensate
piping.
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.
See Article 6.2 for specific requirements.
1.4 CLIMATIC CONDITIONS
The outdoor climatic conditions shall be based on the requirements
outlined in Section and information provided in Section.
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 above 150 mm (6") size shall be shown in double line with all
fittings and accessories clearly shown and identified.
1.6 ENGINEERING ECONOMIC ANALYSIS
To comply with Public Law 95-619, engineering economic analysis shall
be performed, in accordance with the procedure outlined by the
Department of Energy (DOE) in NBS Handbook 135 (Life Cycle Cost
Federal Energy Management Program), to select the most cost effective
HVAC system for the application.
The additional features of the
analysis are:
A. For comparison of systems, a 20-year life cycle shall be assumed.
B. The analysis may be performed by means of available public domain
programs, such as, "TRACE", "E-CUBE", and CARRIER E20-II etc.
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