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separate chapters for cooling loads, heating loads, exhaust systems,
pumping/piping calculations, fan selections, etc.
B. Heat transfer coefficients, solar radiation, psychometrics, duct and
pipe sizing, etc., and calculations and analysis shall be in
accordance with the ASHRAE Handbooks and VA Design Manual.
C. Fan and pump motor horsepower, reheat, and duct heat gains shall be
included in cooling load calculations.
D. In addition to internal loads for people and lights include heat gain
from equipment, such as washers, burners, ovens, refrigerators, etc.
E. The use of computer programs and calculations is acceptable and
desirable. Calculations should, however, be keyed to appropriate
room, zone, and unit numbers for each identification.
7.7 REVIEW SUBMITTALS
In addition to calculations and drawings, the submission shall
include copies of the equipment selection engineering data
(handwritten worksheets shall be acceptable), by unit number,
including the following:
A. Air handling unit capacity and sketch of component arrangement with
physical dimensions for louvers, dampers, access provisions, filters,
coils, fans, vibration isolators, etc.
B. Required performance (Pressures, flow rate, horsepower, motor size,
etc.) for all air handling units, fans and pumps for intended modes
of operation. Include fan and pump performance curves.
C. Coil selections for preheat, heating, cooling and energy reclaim.
D. Heat recovery equipment.
E. Refrigeration equipment loading, performance and selection.
F. Cooling tower performance, winterization (heaters) and noise
analysis.
G. Sound attenuation for fans, ductwork and terminals.
H. Steam PRVs, by-passes and safety valves.
I. Typical catalog cuts of major equipment.
7.8 EQUIPMENT LOCATION AND INSTALLATION
A. GENERAL: Equipment shall be located to be accessible for
installation, operation and repair. Mechanical spaces shall be of
suitable size to permit inspection and access for maintenance, and to
provide space for future equipment when required.
The effect that
equipment noise or vibration might have on areas adjacent to, above,
and below equipment shall be considered.
Location of equipment
remote from sound sensitive areas should be emphasized. Design shall
comply with specified room sound ratings.
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