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

HVAC Upgrades – International Center AAI #12-154
SECTION 23 09 23
DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC
PART 1 GENERAL
1.1 REFERENCES
A. The latest edition of the following standards and codes in effect and amended as of
supplier's proposal date, and any applicable subsections thereof, shall govern design and
selection of equipment and material supplied:
1. ANSI MC85.1 - Terminology for Automatic Control.
2. American Society of Heating, Refrigerating and Air Conditioning Engineers
(ASHRAE).
3. ANSI/ASHRAE Standard 135-2010, BACnet.
4. International Building Code (IBC), including local amendments, IECC and IMC.
5. UL 916 Underwriters Laboratories Standard for Energy Management Equipment.
Canada and the US.
6. National Electrical Code (NEC).
7. FCC Part 15, Subpart J, Class A
8. EMC Directive 89/336/EEC (European CE Mark)
B. City, county, state, and federal regulations and codes in effect as of contract date.
C. Except as otherwise indicated the system supplier shall secure and pay for all permits,
inspections, and certifications required for his work and arrange for necessary approvals
by the governing authorities.
D. All BAS system components (electronic DDC hardware and all software) shall be of one
manufacturer as indicated in manufacturer’s trade catalog. Hybrid systems assembled
from various manufacturers shall not be acceptable. This requirement does not apply to
field devices.
E. Controls contractor to provide personnel for commissioning as required.
1.2 SYSTEM DESCRIPTION
A. The system shall be a browser based Building Automation System (BAS) accessible with
standard browsers such as Internet Explorer and Google Chrome. Systems requiring
workstation software licenses shall not be acceptable.
B. Systems based on Lonworks shall not be acceptable.
C. General Description:
1. Install the Building Global Controller the 2 nd floor mechanical room.
2. THE DIRECT DIGITAL CONTROL (DDC) SYSTEM SHALL CONTROL
EQUIPMENT AS INDICATED ON THE DRAWINGS.
DIRECT DIGITAL CONTROL FOR HVAC 23 09 23 - 1