Addendum .pdf
PDF 133 KB Posted
- Attached to
- Davis HVAC Rebid
- Solicitation number
- RFP GIS 200000000472 2
- Issued by
- Genesee County, Fife Lake Village, Michigan
About this file
This is an Addendum #1 to the contract documents for the GISD Davis Building HVAC Replacement project, issued by Clark Trombley Randers Consulting Engineers on December 19, 2019, for the Genesee Intermediate School District. The addendum modifies the original contract documents and requires bidders to acknowledge receipt by noting the addendum number and issue date on their bid forms, with failure to do so potentially resulting in disqualification. The project involves HVAC system replacement work, with base bid work scheduled during evening hours from 3:30 pm to 11:30 pm. Key mechanical specifications include VRF (Variable Refrigerant Flow) equipment installation with specific ambient temperature, BTU output, and line length requirements; retention of the existing boiler and loop pumps with removal of only the cooling tower; and provisions for Zoomlock fittings that may affect equipment warranty depending on installer capabilities and manufacturer approval. Bidders using Mitsubishi Electric Trane equipment must provide a TAR-CT01MAU-SB TOUCH MA CONTROLLER thermostat, while those using alternative VRF suppliers must provide equivalent thermostats. Control wiring for Mitsubishi systems must be 16-2 stranded and shielded, and filter boxes should be furnished by the VRF manufacturer or contractor-supplied as pre-fabricated or custom-fabricated units.
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Clark Trombley Randers Consulting Engineers
ADDENDUM #1 (12/13 REBID)
Date: December 19, 2019CTR Project Number: 19027.00
Project Name: GISD Davis Building HVAC Replacement
Client: Genesee Intermediate School District
This addendum forms a part of the Contract Documents and modifies the original Contract Documents. Acknowledge receipt of this Addendum by inserting the number and issue date of this addendum in the blank space provided on the Bid Form. Failure to do so may subject the Bidder to disqualification.
This Addendum consists of one (1) page plus one (1) attachment:
December Pre-bid sign in sheet (1) sheet.
Thermostat cut sheet (2) sheets.
GENERAL
1. Base bid should plan on working hours of 3:30 pm – 11:30 pm.
MECHANICAL
1. Attached is additional information on the VRF equipment including ambient temperatures, BTU outputs and line lengths.
2. The boiler and loop pumps are to be left in place. Only the cooling tower is to be removed.
3. Zoomlock fittings may affect the equipment/system warranty. They are very sensitive to installer capabilities. Consult with your selected manufacturer to see if they are allowed without compromising the warranty.
4. If using Mitsubishi Electric Trane, provide the TAR-CT01MAU-SB TOUCH MA CONTROLLER thermostat. If using another VRF supplier, provide a similar thermostat.
5. Control wiring for the Mitsubishi Electric Trane system is to be 16-2 stranded and shielded.
6. Filter box should be furnished by VRF manufacturer. If not possible, contractor should purchase a pre-fabricated filter box or fabricate a filter box.
END OF ADDENDUM NO. 1
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