ADDENDUM 1 - IFB 2526-03 - Water Source Heat Pump System Replacement - Final.pdf

ADDENDUM 1

March 27, 2026

IFB 2526-03 – Water Source Heat Pump System Replacement

THIS ADDENDUM MODIFIES THE ORIGINAL BID DOCUMENTS AND SHALL BE INCORPORATED INTO

THE CONTRACT DOCUMENTS.

Listing of the attendees for the mandatory site visit on March 25, 2026 at 10:00 AM at Isothermal Community College (286 ICC Loop Road, Spindale, NC 28086)

1. Air Carolinas

2. Cooper Construction

3. JG1

4. Johnson Controls

5. MSS Solutions

6. Pyatt Heating & Air

7. Rutherford Heating & Air

Addendum continued onto next page.

Questions Submitted and responses listed below are as follows:

1. Should we include triple duty valves and suction diffusers on the two new condenser water pumps?

Response: Yes, please include these items in the bid price.

2. The existing exhaust fan on the roof adjacent to the AAON unit does not meet the required code distance of 10' away from the fresh air intake. How should we proceed with making this code compliant and will it be part of the bid package?

Response: Yes, this will be a required part of the bid package. We would like to extend the ductwork to comply with the 10-foot requirement.

3. Will the 2% eProcurement fee apply to this project?

Response: No, we will not be sending this project through the eProcurement system.

4. Will the Contractor we be required to replace the motor starters and disconnects?

Response: Yes, please include this replacement in the bid price.

5. Will the Contractor be required to replace the heat trays?

Response: Yes, please include this replacement in the bid price.

6. Who is the controls vendor who works with the College?

Response: Building Management is the College’s controls vendor. The awarded Contractor will be given their contact information.

THE COLLEGE HAS UPDATED THE PRICING SHEET TO REFLECT

THE CHANGES INCLUDED IN ADDENDUM 1. CONTRACTORS

MUST SUBMIT THEIR BIDS USING THE UPDATED PRICE SHEET

ATTACHED IN THIS ADDENDUM.

Addendum continued onto next page.

1. Performance and Payment Bonds

The Contractor awarded this project shall be required to furnish both a performance and payment bond, each in the full amount of the contract.

These bonds shall be provided within ten (10) business days of the Notice of Award and must be submitted prior to the execution of the contract and issuance of the Notice to Proceed.

Bonds shall be issued by a surety authorized to do business in the State of North Carolina.

2. Mechanical Drawing Set for the Lifelong Learning Center (LLC)

Included in this addendum is the mechanical drawing set for the lifelong learning center (LLC).

Please acknowledge receipt of this addendum with your bid submission.

Heather Maples Purchaser Isothermal Community College

ATTACHMENT A: PRICING

Complete and return the Pricing associated with this IFB, which can be found in the table below:

Water Source Heat Pump System Replacement at the Lifelong Learning Center Base Bid

Item Description Bid Price

Furnish and install one (1) AAON RNA-030-WSHP Packaged Rooftop Water Source Heat Pump, including all rigging, curb adapters, reconnections to existing ductwork and piping, and condensate drainage.

Furnish and install one (1) SPX Cooling Technologies (Marley) MD5006NAF1L Cooling Tower, including crane services, electrical reconnection, makeup water connection, overflow piping reconnection, and startup assistance.

Furnish and install two (2) Taco F13007 Condenser Water Pumps (or approved equal), including motors, alignment, base mounting, insulation, protective covers, valves, strainers, flexible connectors, and system balancing to achieve 90 GPM flow.

Remove and properly dispose of existing rooftop heat pump, cooling tower, condenser pumps, and associated piping.

Electrical reconnection of all new equipment to existing 460V / 3 Phase / 60Hz service, including disconnects as required.

Coordinate equipment startup and commissioning with College’s BMS vendor, supply equipment-mounted control devices and wiring to terminal points, and provide on-site support during startup/commissioning.

Manufacturer startup, system flushing and balancing, operational testing, warranty and installation documentation, and final acceptance.

Furnish and install triple duty valves and suction diffusers for the two (2) new condenser water pumps, including all associated piping modifications and connections.

Extend existing ductwork as required to comply with the 10-foot code requirement, including all materials, supports, and connections.

Remove and replace motor starters and disconnects associated with equipment, including all required electrical work and connections.

Remove and replace heat trays, including all associated controls, wiring, and insulation as required for proper operation.

Total Bid Price of the Base Bid

Estimated Start Date:

Estimated Completion Date:

Alternate Bid – Condenser Water Piping Replacement Item Description Bid Price

A1

Remove existing condenser water piping and install new piping sized for 90 GPM, including supports, insulation, valves, fittings, flushing, pressure testing, and balancing.

NC General Contractor License Number:

License Classification:

CERTIFICATIONS:

The undersigned, as a responsive bidder, certifies that the General and Special Conditions of this bid have been read and understood.

The Bidder herby provides assurance that the firm represented in this bid as indicated below:

1. Will comply with all requirements, stipulations, terms, and conditions as stated in the bid document; and

2. Is not guilty of collusion with other vendors possibly interested in this bid, in arriving at or determining prices to be submitted; and

3. That such agent, as indicated below, is officially authorized to represent the firm in whose name the bid is submitted.

Name of Firm:

Authorized Representative:

Title:

Signature:

Date:

DUCTWORK SYMBOLS PIPING & MECHANICAL SYMBOLS LINE DESIGNATION SYMBOLS

DOIBLE LINE SINGLE LINE PIPING (SERVICE AS INDICATED)

EXISTING EQUPMENT OR DUC

EXISTING DUCTWORK

TO BE REMOVED.

EXSTING PEING TO REMAN

(SERVICE AS INDICATED)

(SERVICE AS INDICATE

CONDENSER WATER SUPPLY

MANUAL VOLLAME DAMPER O

MOTOR OPERATED

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BALL VALVE

AV

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CONDENSER WATER RETURN

CHILLED WATER SUPPLY

CHILLED WATER RETURN

TWS TOWER WATER SUPPLY

TOMER WATER RETURN

PCWR

PROCESS OHLLED WATER SUPPLY

PROCESS CHILLED WATER R

REFRIGERANT LIQUID

REFRIGERANT SUCTION

GLYOOL SUPPLY

WATER SUPPLY

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31 THROUGH 54

55 THROUGH 84

MAXIMUM SIZE

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O SCALE FOR DUCTE 1 50 NOES OLESS PENETRA

LIPLE BLADE LEAKACE RATED DAMPER

DAMPER W/AIRFOIL BLADES (DYNAMIC RATED)DAMPER W/ARFOIL BLADE

SMOKE BARRIER

NO FLOW UL LISTED DUCT DETECTOR (0-3000 FM EL

FACP BY OTHERS).

48 MIN FASTENER

LEXBLE FRESTOP SEALANT AAKING WATERAITON SPRING RETURN

ACCESS DOOR

SMOKE DAMPER DETAIL

(MINIMUM THICKNESS, NOMNAL

PROMDE PITCH WTIH INSULATION

NO 1

MS

8 BAS

ASPER SMACIA

SUPPORT LEOS

ANGLE IRON FASTENED

STEEL

MINIMUM THICKNESS, NOMINAL)

0.034 NCH (22 GAGE, C

040 INCH (20 GAGE, G

COUNTER FLASHING HOD

APMENT

METAL

CHOR EQUPMENT SU

DUCT SUPPORT ON ROOF DETAIL

MUN RETURN AIR DUCT

TIC LNIN

O ANOLE IRONCA

BRANCH

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GAS VENT -FLUE TYPICAL RETURN AIR

TYPICAL SUPPLY AIR

AT ROOF DETAIL BRANCH DUCT TAKE-OFF BRANCH DUCT TAKE-OFF

EXPANSION ANGWORT/

CERING

DISCONNECT BUET-UP

0O0 NAILER

CURMOLANT ON

CKDRAFT DAMPER

ELECTRIC UNIT HEATER ROOF FAN MOUNTING DETAIL

MOUNTING DETAIL

LOW LOSS SIDE TAP

SAFNG IGHT

CELNG DIFTUSER

DRAW BAND WITH SIICON

TYPICAL DIFFUSER CONNECTION

OF DUCT CONNE

BUILT

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NEBENS OF THE ARERICA NSTITUTE OF ACHTECTS

IGHT 2006 ALL RIGHTS RESERVED

ED OR ELECTRONIC DRAWINGS AND

FORM WITHOUT WRITTEN PERASSION

RECORD DR

01-2008

ROUND DUCTWORK

KALL AROUND

COUNTER FLA

CUR BOLAT ND SEOI

PROJECT: 923-0510

DRAWN BY

HVAC EQUIPMENT

-WOCO NALER

DUCT PENETRATION THRU ROOF

M-107

UTIONS T

UNIY LEAD SHELDS -PIPE

BPE CLAEW DIENI

5/8 B

LOOR

SUPPORT AT

BOTTON

CHORD OF

ANGLES

METAL P

SLEEVE

CARBON STEEL BEAM CLA

REST ON TOP OF BOTTOH OS

STEEL CLAMP SLEEVE OVER BOLT E IRON

SUPPORT

NOTE LAUPS WIERE CLEVIS TYPE PIPE SUPPORT

FOR NONMETALLIC PIPE

BEAM CLAMPS FOR PIPE

BLAM CLAMPS POR FIFE

OR EQUIPMENT SUPPORT STEEL BAR JOIST PIPE SUPPORT

RISER SUPPORT DETAIL

AIR HANDLING UNIT OR

MMMUM SIZE 1-1/4* ABOVE 1-1/4

EXTEND FULL SIZE

IN PLUG

CONDENSATE DRAIN DETAIL

RACTOR BY PLUMEING

RELIEF VALVE

HIGH CAPACITY

SET TO 12 P9IG

PRESSURE ZO

FROM BOILER

PRE-CHARGING

LOCK SH

DRAIN VALVE

DOMESTEL

FAN MOTOR/BELT

ACCESS DOOR

PROVDED FIELD

LA" THICK REINF

COOLING TOWER MOUNTING & PIPING DETAIL

ABOVE GROUND PIPNG

KCONC

TO BLOG

System No. W-L-1056 FRoting- 2 Hr

L Roting At AmbsientAmbient - Less Than 1 1 CFM/S9 Fr to be rigdly swported on bath sides of wal aszenmby, The asn se

A. Sted Ppe - Nom 12 in. dem (or smaler) Schetude 10 (or hever)

8. lron Ppe- Nam 12 in dam (or amoler) oat or ductils iron pis C. Copper Tuing Nem 4 in. dam (or smaker) Type L. (ar hesler)

ISOTHERMAL

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Life-Long Learning CenterLearning Center

A DCCI1298

3. Frastop Sotem - The firestap syatem stal corit of th ldo AMetoe Se - ytnicl dim the wl. The diam of the openings ist in the gipsum wditcend layers on eech tide of the wol csembly lo be 1-1/2 to 6 in lorgr ISOTHERMAL

SECTION A-A

shal be contucted of the mterids and in the morner specied in the artion Desigrs in the U. F ol froming may cons om 5/8 in. thick gypsum

Max dian of opring is 18-3/4 ansuler space will be present betwen the sted steve coling the stiet stel to a dam smdlker than the Urouh opering, Pocking Moferial - Min 4 in. ticknes of min 4.0 pef mnerd wool on fimly pasted into opming as a permenent form ikress of f moterid

Sgty pocked il ndterid opled wihin the arndlus, fiushwih the

CONSTRUCTION CHEMOANS, D OF

STOP

COPPER & STEEL PEING PASOING THROUCH RATED WALL ASSEMBLES A SMOKE RESISTANT CONST. WALL

VALVE AT INLET

CONN'S

-6TWR. WT

1" 1 INSULATION INSULATION WWITH ALUMINUM

MER-MON BSX 8-1 WATTS/

MAKEUP TO TOWER

DRAINIEW

PRESSURE ZONE ASSÍLY, PRESURE

REDUCING VALVEE

-3" DRAIN LINE

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2T WST TRADE STRERT SUTE 70

SAES (TYP FUR

PUMP

CAOUT- PORER

H CARO

SUCTION LINE WITH

14506

BOOF CAP AND QU

PURTALS PLUS OR

3T DRAIN LINE I ROOF MOUNTED CONDENSING UNIT DETAIL

LATED ANCHOR

LOCKWASHER

4 PLACES)

B WDE FLANGE

PLATED ANCHOR

BOT 9DES OF OPENE BOOT

EATHER PRESSURE SE

MGERS OF THE AMERICAN INGSTITUTE OF ARIHITRECTS

RIGHT 2006 ALL RIGHTS RESERVED

NTED OR ELECTRONIC DRAWINGS AND

BE REPRODUC

OM LSOP ASSOCATES

REVISIONS:

A BULLETIN -01.10.08

1" DOMESTIC WATER

PIPE CURB ASSEMBLY DETAIL

PRESSURE CA

TRIPLE DUTY VALVE

-FOR CONTINUATION A

AIR SEPARATOR PIPING SCHEMATIC

NOT TO SCALE

TYPICAL BASE MTD. TOWER WATER PUMP DETAIL

NOT TO SCALE

IN-LINE CIRCULATING

IN LINE CIRCULATING

POMP DETAIL

CORSTRUCTION FUFOO

PROJECT: 9202:-051160

DRAWN BY:BB

HVAC DETAILS

M-108

SOLUTIONS THROUGH LISTENING

MICE BY DESIGN

/ sa v

CONDITIONED SPASPACE

YLdaUS

EXHAUST

TSIDE HOT GAS REHEAT COIL

L e

ERGY RECOVERY UNIT-ER

ENERGY WHEEL

RETIRN

FLOW DIAGRAM- AIR HA SYSTEMS

EXHAUST

OUTSIDE

오

FLOW DIAGRAM-HEAT PUMP LOOP SYSTEM

PIPING & MECHANICAL SYMBOLS

FUSIBLE LINK VALVE-QUICK CLOSING

PUMP

NEM PPNG (SERVICE AS INDICATED)0 GAS COOK

GLOBE VALVE

PLUG

BUTTERFLY

BALL VALVE

SMNG CHECK

MV

MANUAL

☐☑ AV

☑ UFE CHEDK VA

H nLOM METER

VALVE. A

B

DIRECTO

VALVE, A

AUTO FLOW CON

SOLENOID VALVE

PRESSURE REDUCING VALVE (PRV)

TEMPERATURE/PRES

AUTOMATIC AIR VENT (EXTEND

nLOW METER

BASKET STRAINER

ELECTRIC H

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ARS OF THE ARROAY STITUTE OFARCHTICTS

ALL RIGHTS RESERVED

C DRAIVINGS AND

QUMENTATION MAY NOT BE REPRODUCED

ASSOCIA

PE RISING

VACUUM BREAN ORAWNBYP

IPE DROP

THERINOMETER NCATOR

GAUGE W/GAUGE COCк &

HVAC SYSTEM

GANIGE W/ONUDE COK M-109

DIRECTION OF PITCH

ELECTRIC MOTOR

NOT ALL PIPING & MECHANICAL SYMBOLS ARE USED

Mechanical for LLC Building