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

HVAC Upgrades – International Center AAI #12-154
o. Provide computer software and hardware, operator input/output devices,
control units, local area networks (LAN), sensors, control devices,
actuators, control valves, dampers and operators, indicating devices,
interface equipment and other apparatus and accessories to operate
mechanical systems, and to perform functions specified and detailed.
D. SYSTEM REQUIREMENTS
1. A distributed logic control system complete with all software and hardware
functions shall be provided and installed. System shall be based on
ANSI/ASHRAE Standard 135-2010, BACnet. This system is to control all
mechanical equipment, including all unitary equipment, all air handlers and any
other listed equipment using BACnet-compliant components. Non-BACnetcompliant
or proprietary equipment or systems (including gateways) shall not be
acceptable and are specifically prohibited.
2. It shall be the responsibility of the Controls Contractor to coordinate all interface
requirements with the respective equipment vendors to provide a complete and
working system in all respects.
3. The Web Server should be designed to harness the power of the Internet and
provide efficient integration of standard open protocols (i.e. BACnet). The
Network Server creates a powerful network environment with comprehensive
database management and messaging services. In addition, the Web Server shall
provide an engineering environment and graphical user interface.
4. The web server shall provide the interface between the LAN or WAN and the
field control devices, and provide global supervisory control functions over the
control devices connected to the web server. It shall be capable of executing
application control programs to provide:
a. Calendar functions
b. Scheduling
c. Trending
d. Alarm monitoring and routing
e. Time synchronization
f. Integration of controller data for each applicable protocol
g. Network Management function for all network devices
5. All application controllers for every terminal unit (VAV, etc.) air handler, all
central plant equipment, and any other piece of controlled equipment shall be
fully programmable. Application controllers shall be mounted next to controlled
equipment and communicate with building controller via BACnet LAN.
6. Provide installation and calibration, supervision, adjustments, and fine tuning
necessary for complete and fully operational system.
1.3 SUBMITTALS
A. Section 23 05 00 – General Mechanical Requirements: Submittal procedures.
B. Shop Drawings: Indicate the following:
1. Indicate routing of MS/TP networks on floor plans. Indicate location of Global
Building Controllers and servers. Provide IP connection requirements.
2. Provide proposed campus, floor-plan, equipment and summary graphics with
submittal.
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