ADDENDUM+#2.pdf
PDF 904 KB Posted
- Attached to
- LIBRARY CHILLER UPGRADES
- Solicitation number
- NDSUCE01-2020
- Issued by
- Cass County, Fargo City, North Dakota
About this file
This document is an Addendum No. 1 related to the Library Chiller Upgrades project at North Dakota State University (NDSU) in Fargo, North Dakota. The addendum modifies the original bidding documents by making additions, deletions, and clarifications to several sections of the specifications, including Submittals, Schedule, Oil-Free Centrifugal Chiller, and Air-Cooled Scroll Chiller. It also includes prior approval for the Air-Cooled Scroll Chiller manufacturer. The project involves replacing the chiller at the NDSU Library, located in Fargo, North Dakota, within the jurisdictions of Cass County and the City of Fargo.
The addendum provides details on the warranty requirements for the new chillers, including a minimum two-year warranty on the entire assembly and an additional four-year parts-only warranty for the compressors. It also clarifies that the first-year warranty shall cover the costs of any lost refrigerant due to defective materials or workmanship. Additionally, the addendum specifies that there are no proprietary specifications, and substitutions are allowed for all products, subject to engineer approval.
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Other files
| File | Type | Posted |
|---|---|---|
| BIDDERS+LIST.pdf | ||
| Addendum+#1.docx | DOCX document | |
| Bid+Tab.xlsx | XLSX spreadsheet | |
| RFP+-+Library+Chiller+Upgrade.docx | DOCX document |
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Text version
112 N. Univ. Dr., Ste 140 Fargo, ND 58106 701.532.1788 jamie@jpkengineeringllc.com
ADDENDUM NO. 1
January 16, 2020
Re.: NDSU Library Chiller
To: All Bidders
This addendum forms part of the Contract Documents and modifies the original bidding documents as noted below. Acknowledge receipt of this addendum on your bid envelopes and bid form. Failure to do so will subject Bidder to disqualification.
A. Refer to the SPECIFICATIONS of the above-referenced project and make the following additions, deletions, corrections and/or interpretations:
1. Section 001313 – Submittals
a. Add: “Proprietary Specification Requirements: There are no proprietary specifications in this project. No product will be sole sourced. Substitutions are allowed for all products, as long as, the procedures indicated within these specifications are adhered to. Substitutions must be approved by the engineer prior to acceptance. All approvals shall be requested and approved prior to bidding.”
2. Section 00 3113 – Schedule
a. Add: “Contractors and equipment suppliers shall include any necessary premium costs for deliveries as necessary to maintain final completion date specified.”
3. Section 236416 – Oil-Free Centrifugal Chiller
a. Modify: “Chiller shall be provided with a manufacturer’s written warranty, guaranteeing the entire assembly to be free from defects in material and workmanship for a minimum of two complete cooling seasons, ending November
1 of the applicable calendar year.”
b. Clarify: “Four additional years for compressor parts-only warranty to remain as originally specified.”
c. Clarify: “First year parts and labor warranty shall also include the material and installation costs any lost refrigerant due to defective materials or workmanship.”
112 N. Univ. Dr., Ste 140 Fargo, ND 58106 701.532.1788 jamie@jpkengineeringllc.com
4. Section 236426 – Air-Cooled Scroll Chiller
a. Add: “Chiller shall be provided with a manufacturer’s written warranty, guaranteeing the entire assembly to be free from defects in material and workmanship for a minimum of two complete cooling seasons, ending November
1 of the applicable calendar year.”
b. Clarify: “Four additional years for compressor parts-only warranty to remain as originally specified.”
c. Clarify: “First year parts and labor warranty shall also include the material and installation costs any lost refrigerant due to defective materials or workmanship.”
B. Refer to the DRAWINGS of the above-referenced project and make the following additions, deletions, corrections and/or interpretations:
1. Modify: On Sheet M-6, see revised equipment schedule for Oil-Free Centrifugal
Chiller electrical load change.
PRIOR APPROVALS
Please consider this your approval to bid the equipment or materials listed below under the assumption the proposed alternative meets all physical, performance and optional requirements called for on the plan sheets, specifications and all addendums:
Section Item Manufacturer 234626 Air-Cooled Scroll Chiller Trane
END OF ADDENDUM NO. 1
4" CONCRETE HOUSEKEEPING PAD
BASE-MOUNT PUMP
SUCTION DIFFUSER
WITH SCREEN
FLEX CONNECTOR
(TYP)
PRESSURE GAUGE
NON-SLAM CHECK VALVE BUTTERFLY VALVE
(TYP)
GALVANIZED METAL CAP
OVER ROOF SLEEPER
NON-TREATED 2X10'S STACKED AND SCREWED
WITH 3" WOOD SCREW EVERY 12".
SECURELY ANCHOR ROOF-MOUNT
EQUIPMENT TO SLEEPER WITH BUTYL
SEALANT UNDER EQUIPMENT PAD.
SEAL BOLT HEADS WATERTIGHT.
SLEEPER SHALL BE MINUMUM 8"
ABOVE ROOF MEMBRANE.OVERLAP RUBBER MEMBRANE
AT TOP OF SLEEPER AND
FASTER TO SLEEPER (TYP)
FASTEN SLEEPER TO ROOF DECK
WITH #14 SCREWS EVERY 12"
*M.C RESPONSIBLE FOR ROOF
CUTTING AND PATCHING
FASTEN CHILLER TO FACTORY PROVIDED
RUBBER-IN-SHEAR ISOLATORS.
CHILLER SLEEPER DETAIL
SCALE: NTS6BASE-MOUNTED PUMP DETAIL
SCALE: NTS3
18 GAUGE GALVANIZED
SHEETMETAL SHIELD
(TYP)
INSULATION
(TYP)
PIPE
(TYP)
HANGER RODS
(TYP)
FIBERGLASS "H-BLOCK"
PIPE SUPPORT
(TYP)
18 GAUGE GALVANIZED
SHEETMETAL SHIELD
(TYP)
12" MIN
INSULATION
(TYP)PIPE
(TYP)
18 GAUGE GALVANIZED
SHEETMETAL SHIELD
(TYP)
INSULATION
(TYP)
PIPE
(TYP)
HANGER RODS
(TYP)
18 GAUGE GALVANIZED
SHEETMETAL SHIELD
(TYP)
12" MIN
INSULATION
(TYP)PIPE
(TYP)
OVERSIZED CLEVIS HANGER
FIBERGLASS "H-BLOCK"
PIPE SUPPORT
(TYP)
PIPE HANGER WITH INSULATION DETAIL
SCALE: NTS2
DIAL TYPE
PRESSURE
GAUGE
EXISTING
HOUSEKEEPING PAD
STEEL PIPE AN FLANGES FOR PIPE SUPPORT.
INSTALL RUBBER PAD UNDER BASE FLANGE
AND ANCHOR FLANGE TO CONCRETE
FLEX CONNECTOR
(TYP)
NON-SLAM
CHECK VALVE
FLOW MEASURING
DEVICE
BUTTERFLY VALVE
(TYP)
PUMP
IN-LINE PUMP DETAIL
SCALE: NTS4
FLOOR
10 PIPE DIA. 10 PIPE DIA.
2X2X1/4" WELDED BLACK IRON
STAND PAINTED BLACK
METAL DECK
INSULATION
ROOF MEMBRANE
FASTEN STAND TO TREATED 2X4
WITH STRIP OF RUBBER UNDER 2X4
INSULATED CHILLED WATER SUPPLY
AND RETURN SEALED WATER TIGHT
8" M
IN
CHILLED PIPING STAND ON ROOF DETAIL
SCALE: NTS1
ROOF INSULATION
RETURN
SUPPLY
COIL
SHUT-OFF VALVE
(TYP)
THERMOMETER
(TYP)
MANUAL VENT
FLOW MEASURING DEVICE
MANUAL DRAIN
UNION
(TYP)
3-WAY CONTROL VALVE
WYE STRAINER WITH BLOWDOWN
(TYP)
ATC THERMOWELL ONLY
(TYP)
AHU COIL 3-WAY VALVE CONNECTION DETAIL
SCALE: NTS5
FULL SIZE PIPE
SHEET NO.:
PROJECT NO.: 190058
DATE: JANUARY 3, 2020
CHECKED BY: JPK
DRAWN BY: RJS
REVISION SCHEDULE:
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JPK
ENGINEERING, LLC
112 N. Univ. Dr.
Suite 140 Fargo, ND 58102
(701) 532-1788
SET NO.
1 ADDENDUM #1, 2020-1-16
SHEET TITLE:
M-6
MECHANICAL SCHEDULES AND DETAILS
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