AUTEC-_Addendum02.pdf

TTV ARCHITECTS, INC.

GSA AUTEC Federal Building

FOR

Social Security Administration Alterations West Palm Beach, Florida

ADDENDUM 02

07/16/15

CHANGES TO SPECIFICATIONS

Item 1: The following Specification Section 23 09 23 BUILDING MANAGEMENT SYSTEM is hereby revised as follows. Note that Revised Items will completely supersede the previous issuance:

A. Delete all requirements for LON within the specification – all items to be added to the existing system shall be compatible with the Siemens Apogee BMS system currently installed.

B. Paragraph 1.01: Replace paragraph E with the following: This project is a renovation to a portion of an existing floor within an operational building. New single duct VAV boxes with electric heat, an inline chilled water pump, a 100% outside air unit with VFD, with direct expansion and chilled water cooling, a hot gas reheat coil, and an energy wheel, exhaust fans and a ductless mini-split have been added that need to be added to the existing Siemens Apogee BMS system. Some existing VAV boxes and/or their controls have been relocated. The interface of the 100% Outside Air Unit shall be compatible with the Siemens Apogee BMS system so that all software points made available by the unit manufacturer can be monitored and/or adjusted (as applicable) from the existing BMS system. The controls provided under this section of the contract shall be integrated with the existing control work to be one seamless package. The graphics for the BMS shall also be updated to include all of the new equipment as well as delete the equipment that was removed.

C. Paragraph 2.08 A.: Replace sub item 6 with below, and add sub items 7, 8 as follows:

6. Room Temperature Sensor with Integral Display

a. Room sensors shall be constructed for either surface or wall box mounting.

b. Room sensors shall have an integral LCD display and four button keypad with the following capabilities:

• Display room and outside air temperatures.

• Display and adjust room comfort setpoint.

• Display and adjust fan operation status.

• Timed override request push button with LED status for activation of after-hours operation.

• Display controller mode.

• Password selectable adjustment of setpoint and override modes.

7. Wall Mounted CO2 sensor (to reduce the air flow from OARTU-1):

a. Type: Non-dispersive infrared (NDIR)

b. Configuration: single lamp single wavelength or single lamp dual wavelength

c. Accuracy: Plus or minus 30 ppm or better

d. Operating range: 0-2000 ppm

e. Response Time: 3 minutes or less

f. Calibration Interval: not less than 5 years.

TTTV Architects, Inc.

GSA AUTEC Federal Building Social Security Administration Alterations West Palm Beach, Florida

ADDENDUM 02- 07/16/15

8. Dew Point Sensor (to reset supply air temperature)

a. Type: Capacitive RH sensor with RTD temperature sensor that computes dew point

b. Accuracy: Plus or minus 1.8°F over the specified range.

c. Operating Range: 40° to 90°F

d. Response Time: 3 minutes or less

e. Calibration Interval: not less than 5 years.

CHANGES TO DRAWINGS

Item 2: Drawing MH-100-MECHANICAL NOTES, SCHEDULES AND LEGEND, 100% Outside Air Unit Schedule, Note 6, delete the word “LONWORKS”.

END OF ADDENDUM # 02

Item 2: Drawing MH-100-MECHANICAL NOTES, SCHEDULES AND LEGEND, 100% Outside Air Unit Schedule, Note 6, delete the word “LONWORKS”.