9. HEATING, VENTILATING & AIR CONDITIONING
a. Provide the first version of the detailed zone heating and cooling load
calculations. Accompany these calculations with the architectural drawings 1:200
(1/16 inch) scale showing correlation between each zone boundary and the floor
area and abbreviated/coded room numbers used with computer input data sheets.
Provide input manuals for the computer programs with clear indications of the
capabilities and limitations of the programs. Provide a level of detail of the
calculations consistent with the development of the architectural drawings.
estimate capacities in cubic meters (cubic feet) per minute, static pressure, and
required fan motor horse power.
c. For the proposed chilled water plant, indicate the quantity and type of
chillers, capacity in tons of refrigeration, and the electrical requirements. Provide
pertinent data for the chilled water plant accessories, that is, chilled water and
condenser water pumps, and cooling tower. Coordinate the cooling tower location
with other disciplines. Perform a sound/acoustic analysis to ensure that the noise
generated by the chillers, condensers and condensing units, cooling tower, etc. is
in compliance with the acceptable limits stipulated in the VA HVAC Design Manual.
d. For the heating system, compile the total heating load based on the
available information of the space heating requirements, domestic hot water load,
humidification loads, and the equipment steam demand. Provide a written
description of the proposed zoning of the heating system indicating such features
as, distribution of ventilation load, perimeter heat load, and reheat load associated
with air terminal units.
e. Assemble and provide available preliminary electrical power (normal and
emergency) data to the electrical discipline.
f. Provide a description of the interaction between the existing HVAC systems
(if any) and the new requirements. State clearly the impact on the existing HVAC
systems.
g. Provide a written description of the seismic criteria (if applicable) on the
HVAC systems.
h. Provide a list of edited VA standard symbols and abbreviations.
i. Provide 1:100 (1/8 inch) scale HVAC floor plans for typical areas showing
the proposed routing of the main air distribution and piping layouts. Ductwork and
piping may be shown in single line.
j. Show fire and smoke partitions on HVAC floor plans. Show necessary
smoke and fire dampers and smoke detectors, etc. on floor plans. For buildings not
Program Guide, PG-18-15, Volume B
Design Development 1
Page 28
May 2006
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