ADDENDUM NO. 2 CITY OF SAN ANTONIO CAPITAL ...

HVAC Upgrades – International Center AAI #12-154
M. Graphic Display: Support graphic development on work station with software features:
1. Page linking.
2. Generate, store, and retrieve library symbols.
3. Single or double height characters.
4. Sixty (60) dynamic points of data for each graphic page.
5. Pixel level resolution.
6. Animated graphics for discrete points.
7. Analog bar graphs.
8. Display real time value of each input or output line diagram fashion.
N. Maintenance Management:
1. Run time monitoring, for each point.
2. Maintenance scheduling targets with automatic annunciation, scheduling and
shutdown.
3. Equipment safety targets.
4. Display of maintenance material and estimated labor.
5. Target point reset, for each point.
2.3 LOAD CONTROL PROGRAMS (systems shall be capable of all programs listed; however not
all are required by the current sequences of operations)
A. Demand Limiting:
1. Monitor total power consumption for each power meter and shed associated
loads automatically to reduce power consumption to an operator set maximum
demand level.
B. Duty Cycling: Periodically stop and start loads, based on space temperature, and
according to various On/Off patterns.
C. Automatic Time Scheduling: Self-contained programs for automatic start/stop/scheduling
of building loads. Support up to seven (7) normal day schedules, seven (7) "special day"
schedules and two (2) temporary schedules.
D. Start/Stop Time Optimization:
1. Perform optimized start/stop as function of outside conditions, inside conditions,
or both.
2. Adaptive and self-tuning, adjusting to changing conditions.
3. For each point under control, establish and modify:
a. Occupancy period.
b. Desired temperature at beginning of occupancy period.
c. Desired temperature at end of occupancy period.
E. Night Setback/Setup Program: Reduce heating space temperature set point or raise
cooling space temperature set-point during unoccupied hours; in conjunction with
scheduled start/stop and optimum start/stop programs.
F. Calculated Points: Define calculations and totals computed from monitored points
(analog/digital points), constants, or other calculated points.
DIRECT DIGITAL CONTROL FOR HVAC 23 09 23 - 11