26-3933 HVAC Replacement to Improve Indoor Air Quality – Addendum 2

Description

700 W. 29th Street, North Little Rock, AR 72114 P.O. Box 5757 North Little Rock, AR 72119 501-975-8881 Phone CITY OF NORTH LITTLE ROCK, ARKANSAS COMMERCE DEPARTMENT Amy Smith, Purchasing Manager Sheila Harper, Purchasing Agent Bid Number: 26-3933 ADDENDUM #2 Date & Time Bid Opening: Date Issued: August 19, 2026 August 26, 2026 at 3:00pm Replacement of HVAC Air Handler, Controller Module, and Boiler to Improve Indoor Air Quality and Prevent Spread of Infectious Aerosols Q: Will the bid date be extended to allow more time to verify the scope of work and prepare proposals? A: Yes, the bid opening date has been revised to Wednesday, August 26, 2026 at 3:00 p.m. The addendum is on the website. Q: It was stated at the pre-meeting that the scope of work for pricing Item No. 1 “Direct Digital Control System” will only include the mechanical room, adjacent medium room & adjacent large room. Is this correct and/or can the scope of DDC System work be further detailed. A: For this project, yes, the DDC will only include the mechanical room, adjacent medium room & adjacent large room. Q: Will the DDC System scope of work in the mechanical room include controls for the chiller, cooling tower, pumps & existing control valves? If so, will VFD’s be required at the cooling tower and pumps? A: Yes and yes. Q: There is an existing (4”) 3-way bypass/control valve hanging in the mechanical room ceiling that is bad and lets hot or cold water bleed by depending on the season. Does this valve need to be replaced as part of the DDC System scope? A: Yes. Q: There is an existing (5”) 3-way bypass/control valve prior to the pump that is disconnected & one side flanged off. Does this valve need to be replaced or removed as part of the DDC System scope? A: Yes. Q: How long can the system be down while replacing the old Air Handling Unit? Will this work need to be completed in the winter season? A: As long as necessary, assuming work is actively taking place. Ideal time frame is between September 1 and January 1. Q: How long can the heating water system be down when replacing the Boiler? Will this work need to be completed in the summer season? A: As long as necessary, assuming work is actively taking place. Ideal time frame is between September 1 and January 1. Bid Number: 26-3933 ADDENDUM #2 Date & Time Bid Opening: Date Issued: August 19, 2026 August 26, 2026 at 3:00pm Only questions submitted in writing and email to bnoland@nlr.ar.gov will be answered.