Bay_Point_Chiller-Tower_-_Addendum_01.pdf

ADDENDUM NUMBER: 01

Project: Bay Point Chiller/Tower Replacement BCER Project

No.:

132324002

Date: May 12, 2025

This Addendum forms a part of the Contract Documents and modifies the original Bidding Documents dated April 8, 2025, as noted below. Acknowledge receipt of this Addendum in the space provided on the

Bid Form. Failure to do so may subject Bidder to disqualification.

Question Response

What is the estimated delivery date for the owner provided chiller?

The chiller is scheduled to ship 9/4/2025.

Are the existing control valves being replaced under this scope? If so, are they provided by controls vendor?

Control valves for the chillers and condenser water pumps are existing and shall be re-used in the new scope.

Would it be acceptable to have the structural

Engineer design new steel frame work for the cooling tower in lieu of modifying the existing steel frame work?

An alternate structure is acceptable. The contractor shall carry the costs of engaging a licensed structural engineer and submitting the design for review.

Drawing ED 2.1 has CP 1 & 2 being replaced under the base bid of this project. Drawing E 2.1 has CP 1 & 2 existing to remain as base bid, and the new pump work listed as Alternate #1. Need

Clarification?

Pumps CP-1 and 2 are part of the base bid.

Pumps PCHP-1 and 2 are part of add alternate 1 and Pumps SCHP-1, 2, and 3 are part of add alternate 2. Notes shall be revised as follows:

Keynote for Pump CP 1 & 2 on the new plan shall be changed from E5 to E1. E1 which states

“DISCONNECT EXISTING PUMP. MAINTAIN

EXISTING DISCONNECT SWITCH,

CONDUIT AND WIRING FOR RECONNECTION.

EXTEND CONDUIT AND WIRING TO

NEW CONNECTION LOCATION AS REQUIRED.”

SUBMITTAL TRANSMITTAL

TO: Mohamed Mo Abdelaziz

Carrier

DATE: April 7, 2025

REFERENCE: PINCS - Bay Point ES Chiller Replacement

BCER PROJECT #: 132324002.00

E-Mail: mohamed.abdelaziz@carrier.com SUBMITTAL #: 2.A

SUBMITTAL NAME: Water Cooled Chiller – Option A

PROJECT MANAGER: Mike Cordero

R e v ie w d je c te v is e

R e su b m it

M a k e C o rr e c ti o n s

A s

N o te

Date In Date Out Submittals & Tag # Section Manufacturer

04/01/25 04/07/25 Water Cooled Chiller Carrier X

BCER Internal Coordination:

Life Safety Plumbing Mechanical Electrical Technology

☐ Completed

☒ N/A

☐ Completed

☒ N/A

☒ Completed

☐ N/A

☒ Completed

☐ N/A

☐ Completed

☒ N/A

These are transmitted as indicated: ☒ Checked as Noted (See Comments below) ☐ Checked as Noted (See Submittals)

SUBMITTAL REVIEW

COMMENTS:

1. Please note: chiller is owner furnished and contractor installed.

2. Contractor to please furnish and install all accessories and components necessary to provide a fully functioning chiller plant.

3. Per submittal, chiller utilizes BACnet / Modbus communication protocol. Confirm control communication with TC prior to procurement.

4. Spring isolation package is “not selected” per submittal. Per detail 4/M6.1, please provide factory supplied vibration isolation package.

5. Per submittal drawing notes waterbox hinges are not shown and affect unit length and width. Please confirm unit dimensions with manufacturer prior to procurement, as waterboxes are selected.

6. Electrical: No additional comments.

REVIEWED BY: Preston Kosiara

Pinellas County Schools

Project 25-CR-036 Bay Point Elementary School

Date 2/18/2025

Mechanical Engineer BCER Engineering

Sales Engineer Mohamed Abdel-Aziz

Submittal Water Cooled Chiller Option A mohamed.abdelaziz@carrier.com; 813-404-2573

P. Kosiara BCER Submittal Review Stamp Make Correction Noted

Table of Contents

Details 1

Drawings 13

Details

Compressor

Size R (FL Opt.)

Economizer Not Installed

Weights

Total Rigging Weight 20554 lb

Total Operating Weight 23316 lb

Refrigerant Weight 750 lb

Motor & Motor Controller

Size V (R comp)

Line Voltage-Phase-Hertz 460(V)-3-60(Hz)

Flow Controls

Automatic Hot Gas Bypass Installed

Isolation Valve Installed

Flasc Orifice 28

Configuration Evaporator

Size 40

Waterbox Type Marine Waterbox, 150 psi

Passes 2

Nozzle Arrangement C - 2 Passes, Nozzles on Discharge End

Tubing 3/4" 0.028" Copper Rifled Evaporator Tubes

Fluid Type Fresh Water

Fouling Factor 0.000100 (hr-sqft-F)/BTU

Condenser

Marine Waterbox, 150 psi

R - 2 Passes, Nozzles on Discharge End

3/4" 0.028" Copper Rifled Condenser Tubes

Fresh Water

0.000250 (hr-sqft-F)/BTU

Chiller Starter / VFD Unit Mounted VFD (STD Tier)

Refrigerant Type R-513A

Operation Type Cooling

Manufacturing Source Charlotte, USA

23XRV4041NRVR450--

Page 1 of 6NG eCat Applied Chillers North America v3.7.0.0

Performance Report

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

Date: 02/13/2025 2:03 PM Prepared By: Mohamed Abdelaziz

Full Load Performance Percent Load Chiller

Percent Load 100.00

Chiller Capacity 460.0 Tons

Chiller Power 266.5 kW

Chiller Efficiency 0.5794 kW/TonR

Chiller COPʀ 6.070 kW/kW

IPLV.IP 0.3369 kW/TonR

IPLV, COPʀ 10.44

NPLV.IP 0.3335 kW/TonR

NPLV, COPʀ 10.54

Evaporator

Entering Temperature 55.22 °F

Leaving Temperature 45.00 °F

Flow Rate 1079 gpm

Pressure Drop 22.8 ft H₂O

Condenser

Leaving Temperature 95.29 °F

Entering Temperature 85.00 °F

Flow Rate 1252 gpm

Pressure Drop 16.8 ft H₂O

Motor & Motor Controller

Motor Rated Load Amps 400.6

Motor Rated Load KW 257.4 kW

Chiller Line Amps 370.4

Chiller Rated Line Amps 370

Chiller Inrush Amps 370

Max Fuse/ CB Amps 800

Min Circuit Ampacity 463

Full Load

(1) Certified in accordance with the AHRI Water-Cooled Water-Chilling and Heat Pump Water-Heating Packages Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI).

Certified units may be found in the AHRI Directory at www.ahridirectory.org.

(2) Unable to meet all input requirements.This selection is the best available http://www.ahrinet.org/WCCL.aspx

This unit complies with the efficiency requirements of :

ASHRAE 90.1 Criteria 2007.

ASHRAE 90.1 2010 Path A.

ASHRAE 90.1 2010 Path B.

ASHRAE 90.1 2013 Path A.

ASHRAE 90.1 2013 Path B.

ASHRAE 90.1 2016 Path A.

ASHRAE 90.1 2016 Path B.

1 Point LEED EAC4 can be earned when selecting the 23XR AquaEdge

Page 2 of 6NG eCat Applied Chillers North America v3.7.0.0

Performance Report

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

Percent Load 100.00 75.00 50.00 25.00

Chiller Capacity 460.0 Tons 345.0 Tons 230.0 Tons 115.0 Tons

Chiller Power 268.6 kW 141.9 kW 66.34 kW 37.31 kW

Chiller Efficiency 0.5840 kW/TonR 0.4113 kW/TonR 0.2884 kW/TonR 0.3244 kW/TonR

Chiller COPʀ 6.023 kW/kW 8.551 kW/kW 12.19 kW/kW 10.84 kW/kW

IPLV.IP 0.3369 kW/TonR NA NA NA

IPLV, COPʀ 10.44 NA NA NA

NPLV.IP 0.3335 kW/TonR NA NA NA

NPLV, COPʀ 10.54 NA NA NA

Evaporator

Entering Temperature 54.00 °F 51.50 °F 49.00 °F 46.50 °F

Leaving Temperature 44.00 °F 44.00 °F 44.00 °F 44.00 °F

Flow Rate 1103 gpm 1103 gpm 1103 gpm 1103 gpm

Pressure Drop 23.8 ft H₂O 23.9 ft H₂O 24.0 ft H₂O 24.1 ft H₂O

Condenser

Leaving Temperature 94.30 °F 81.70 °F 69.32 °F 67.18 °F

Entering Temperature 85.00 °F 75.00 °F 65.00 °F 65.00 °F

Flow Rate 1387 gpm 1387 gpm 1387 gpm 1387 gpm

Pressure Drop 20.2 ft H₂O 20.7 ft H₂O 21.3 ft H₂O 21.3 ft H₂O

Motor & Motor Controller

Motor Rated Load KW 259.5 kW NA NA NA

Motor Rated Load Amps 397.4 313.2 249.7 236.7

Motor OLTA 429 NA NA NA

Chiller Rated Line Amps 379 236 128 79

Chiller Inrush Amps 379 NA NA NA

Max Fuse/ CB Amps 800 NA NA NA

Min Circuit Ampacity 473 NA NA NA

AHRI Tolerances

AHRI Test Tolerance% 5.00 7.25 10.00 14.75

Max Efficiency 0.6131 0.4411 0.3173 0.3723

Min Capacity 437.0 NA NA NA

Max IPLV.IP 0.3706 NA NA NA

ASHRAE 90.1 Efficiency Requirements

ASHRAE 90.1 Max Input Power 0.6250 NA NA NA

ASHRAE 90.1 Max IPLV/ NPLV NA NA NA NA

Percent Load

IPLV.IP

Certified in accordance with the AHRI Water-Cooled Water-Chilling and Heat Pump Water-Heating Packages Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI).

Certified units may be found in the AHRI Directory at www.ahridirectory.org.

http://www.ahrinet.org/WCCL.aspx

Page 3 of 6NG eCat Applied Chillers North America v3.7.0.0

Performance Report

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

This unit complies with the efficiency requirements of :

ASHRAE 90.1 Criteria 2007.

ASHRAE 90.1 2010 Path A.

ASHRAE 90.1 2010 Path B.

ASHRAE 90.1 2013 Path A.

ASHRAE 90.1 2013 Path B.

ASHRAE 90.1 2016 Path A.

Page 4 of 6NG eCat Applied Chillers North America v3.7.0.0

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

Percent Load 100.00 75.00 50.00 25.00

Chiller Capacity 460.0 Tons 345.0 Tons 230.0 Tons 115.0 Tons

Chiller Power 266.5 kW 140.9 kW 65.77 kW 36.44 kW

Chiller Efficiency 0.5794 kW/TonR 0.4083 kW/TonR 0.2860 kW/TonR 0.3168 kW/TonR

Chiller COPʀ 6.070 kW/kW 8.614 kW/kW 12.30 kW/kW 11.10 kW/kW

IPLV.IP 0.3369 kW/TonR NA NA NA

IPLV, COPʀ 10.44 NA NA NA

NPLV.IP 0.3335 kW/TonR NA NA NA

NPLV, COPʀ 10.54 NA NA NA

Evaporator

Entering Temperature 55.22 °F 52.66 °F 50.11 °F 47.55 °F

Leaving Temperature 45.00 °F 45.00 °F 45.00 °F 45.00 °F

Flow Rate 1079 gpm 1079 gpm 1079 gpm 1079 gpm

Pressure Drop 22.8 ft H₂O 22.9 ft H₂O 23.0 ft H₂O 23.1 ft H₂O

Condenser

Leaving Temperature 95.29 °F 82.39 °F 69.76 °F 67.40 °F

Entering Temperature 85.00 °F 75.00 °F 65.00 °F 65.00 °F

Flow Rate 1252 gpm 1252 gpm 1252 gpm 1252 gpm

Pressure Drop 16.8 ft H₂O 17.2 ft H₂O 17.7 ft H₂O 17.7 ft H₂O

Motor & Motor Controller

Motor Rated Load KW 257.4 kW NA NA NA

Motor Rated Load Amps 400.6 315.5 250.9 234.6

Motor OLTA 433 NA NA NA

Chiller Rated Line Amps 370 235 127 77

Chiller Inrush Amps 370 NA NA NA

Max Fuse/ CB Amps 800 NA NA NA

Min Circuit Ampacity 463 NA NA NA

AHRI Tolerances

AHRI Test Tolerance% 4.97 7.21 9.93 14.62

Max Efficiency 0.6082 0.4377 0.3144 0.3632

Min Capacity 437.2 NA NA NA

Max NPLV.IP 0.3666 NA NA NA

ASHRAE 90.1 Efficiency Requirements

ASHRAE 90.1 Max Input Power 0.6250 NA NA NA

ASHRAE 90.1 Max IPLV/ NPLV NA NA NA NA

Percent Load

NPLV.IP

Certified in accordance with the AHRI Water-Cooled Water-Chilling and Heat Pump Water-Heating Packages Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI).

Certified units may be found in the AHRI Directory at www.ahridirectory.org.

http://www.ahrinet.org/WCCL.aspx

Page 5 of 6NG eCat Applied Chillers North America v3.7.0.0

Performance Report

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

This unit complies with the efficiency requirements of :

ASHRAE 90.1 Criteria 2007.

ASHRAE 90.1 2010 Path A.

ASHRAE 90.1 2010 Path B.

ASHRAE 90.1 2013 Path A.

ASHRAE 90.1 2013 Path B.

ASHRAE 90.1 2016 Path A.

Page 6 of 6NG eCat Applied Chillers North America v3.7.0.0

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

Note: 1) Minimum Flow Rate is 3 ft/sec for standard calculation results and 1.5 ft/sec when the user selects Variable Primary Flow.

2) This does not imply that the chiller can be properly applied over the entire range of evaporator water flow rates represented. The chart is to represent pressure drops only.

Evaporator

Size 40

Waterbox Type Marine Waterbox, 150 psi

Passes 2

Tubing 3/4" 0.028" Copper Rifled Evaporator Tubes

Flow Rate 1079 gpm

Pressure Drop 22.8 ft H₂O

Fluid Type Fresh Water

Minimum Flow Rate 501.5 gpm

Maximum Flow Rate (12.0 ft/sec) 2006 gpm

23XRV4041NRVR450--

1 Point LEED EAC4 can be earned when selecting the 23XR AquaEdge

Page 1 of 1NG eCat Applied Chillers North America v3.7.0.0

Chiller Evaporator Pressure Drop

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

Note: This does not imply that the chiller can be properly applied over the entire range of condenser water flow rates represented. The chart is to represent pressure drops only.

Condenser

Size 41

Waterbox Type Marine Waterbox, 150 psi

Passes 2

Tubing 3/4" 0.028" Copper Rifled Condenser Tubes

Flow Rate 1252 gpm

Pressure Drop 16.8 ft H₂O

Fluid Type Fresh Water

Minimum Flow Rate (3.0 ft/sec) 597.7 gpm

Maximum Flow Rate (12.0 ft/sec) 2391 gpm

23XRV4041NRVR450--

1 Point LEED EAC4 can be earned when selecting the 23XR AquaEdge

Page 1 of 1NG eCat Applied Chillers North America v3.7.0.0

Chiller Condenser Pressure Drop

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

Starter / VFD Unit Mounted VFD (STD Tier)

Refrigerant Type R-513A

Evaporator

Size 40

Waterbox Type Evaporator Waterbox Extra

Passes 2

Nozzle Arrangement C - 2 Passes, Nozzles on Discharge End

Nozzle Options Victaulic Evaporator Nozzles

Evaporator Hinges Hinged Waterbox Covers - Evaporator - Both Ends

Tubing 3/4" 0.028" Copper Rifled Evaporator Tubes

Fluid Type Fresh Water

Weights

Total Rigging Weight 20554 lb

Total Operating Weight 23316 lb

Refrigerant Weight 750 lb

Condenser

Size 41

Waterbox Type Condenser Waterbox Extra

Passes 2

Nozzle Arrangement R - 2 Passes, Nozzles on Discharge End

Nozzle Options Victaulic Condenser Nozzles

Condenser Hinges Hinged Waterbox Covers - Condenser - Both Ends

Tubing 3/4" 0.028" Copper Rifled Condenser Tubes

Fluid Type Fresh Water

Motor & Motor Controller

Motor Size V (R comp)

Line Voltage-Phase-Hertz 460(V)-3-60(Hz)

Oil Pump Voltage-Phase-Hertz 460(V)-3-60(Hz)

SCCR Rating 100 kA

Flow Controls

Condenser Float Valve 2

Dimensions

Length 183 in

Width 81 in

Height 91 in

Options

Shipment & Packaging

Packaging Options None

Miscellaneous Options

Evaporator Insulation STD.

Sensor Package Not Selected

Soleplates Not Selected

23XRV4041NRVR450--

Page 1 of 2NG eCat Applied Chillers North America v3.7.0.0

AquaEdge Chiller Configuration

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

Note: This list of specified chiller options does not include any of the separate-ship accessories (gasket kits, refrigerant cylinders, standalone pumpout units, or storage tank / pumpout units), nor any items specified on a Quote Control. These items are specified as part of a bid, and not in the chiller tag. The Pricing Report includes all of these items as specified in a bid.

Spring Isolation Package Not Selected

Controls & Power

HMI Communication Protocol BACnet/Modbus Standard

1 Point LEED EAC4 can be earned when selecting the 23XR AquaEdge

Page 2 of 2NG eCat Applied Chillers North America v3.7.0.0

AquaEdge Chiller Configuration

Baypoint ES Bid - CH-3 Option A

Carrier NAC Sales Office

23XRV4041NRVR450--

Estimated Sound Pressure Levels - dB re: 20 micropascal.

Sound pressure levels used to develop this program were measured per AHRI Standard 575.

The sound pressure levels were measured in an acoustical free-field, i.e. a non-reflective environment. Field sound measurements can vary significantly as a function of the reflectivity and proximity of nearby surfaces and the presence of other sound sources.

Notes:

Airborne Sound Pressure, dB Sound Treatment: Full Factory Acoustic Insulation

Full Load

Percent Load

DBA

100.00 85

IPLV

Octave Band Center Frequency, Hz

Percent Load

DBA

100.00 86

75.00 81

50.00 79

25.00 79

NPLV

Octave Band Center Frequency, Hz

Percent Load

DBA

100.00 85

75.00 80

50.00 79

25.00 79

1 Point LEED EAC4 can be earned when selecting the 23XR AquaEdge

Octave band sound pressure level data, for each of the above specified loads, are available upon request.

Page 1 of 1NG eCat Applied Chillers North America v3.7.0.0

AquaEdge Chiller Estimated Acoustic Data

Baypoint ES Bid - CH-3 Option A

Date: 02/13/2025 2:03 PM

Carrier NAC Sales Office

Prepared By: Mohamed Abdelaziz

Drawings

Pinellas County Schools 22 05 15 Variable Frequency Drives Facility Name: Bay Point Elementary School

PCS Project No.: 9509

Issued: 5/2016 Revised: 2/11/25

PART 1 GENERAL

1.01 WORK INCLUDED

A. Variable Frequency Drives (VFDs).

B. Fuses.

C. Enclosures.

1.02 SCOPE OF WORK

A. It is the intent of this specification for the Division 23 Contractor to provide UL approved and labeled, VFD equipment and control interface.

B. Any changes to this specification shall have prior approval of the Project Architect/Engineer (PA/E) and Pinellas County Schools.

C. Scope of work related to this specification section shall be distributed as follows:

▪ Division 23 Mechanical Subcontractor to supply the VFD.

▪ Division 26 Electrical Subcontractor to provide power and TVSS to the VFD and, if not pre-wired to packaged equipment, provide power from the drive to the equipment.

▪ Division 23 Controls Subcontractor to provide controls interface to include conduit, cable, terminations, and interface software.

▪ VFD Manufacturer to provide startup, training, and validate proper operation of the

VFD.

1.03 RELATED SECTION

A. Section 23 Basic Mechanical Requirements.

B. Section 23 Distributed Digital Control System.

1.04 SUBMITTALS

A. Submit product data under provisions of Division 1 and Division 23 – General Mechanical Requirements, or this Section, whichever is more stringent.

B. Include outline drawings with dimensions, and equipment ratings for voltage, capacity, horsepower, and short circuit.

1.05 WARRANTY

A. Manufacturer shall warrant (in writing) the equipment to be free from defects in materials and workmanship. This warranty shall extend for a period of two years or per the Manufacturer’s published standard warranty, whichever is longer, starting from Substantial Completion.

B. Manufacturer agrees to provide parts, labor, travel, and shipping for a minimum period of two years to replace defective parts or repair defects in workmanship. For the remainder of the warranty period, if any, replacement materials shall be provided at no charge but labor shall be at the Owner’s expense. Provided the standard manufacturer’s published warranty exceeds two years, the manufacturer shall provide replacement parts to the authorized service dealer under contract to the District.

PART 2 PRODUCTS

2.01 ACCEPTABLE MANUFACTURERS—VARIABLE FREQUENCY DRIVE

A. ABB.

B. Danfoss Graham.

C. Yaskawa.

D. Toshiba.

E. Re-labeled products manufactured by the listed acceptable Manufacturer’s as an OEM product shall not be accepted.

2.02 PRODUCTS

A. Variable Frequency Drive (VFD) Motor Speed Controller (Refer to Drawings for Voltage, Size, and Location.)

1. Variable frequency drive and motor shall provide full motor nameplate rated horsepower as scheduled with no derating.

2. The controller shall be furnished in an enclosure which shall be a NEMA-1 enclosure and be configured as a motor starter and shall contain, in a single cabinet or frame, the following VFD components:

a. Output thermal motor overloads

b. 3 phase input line reactor (3%)

3. VFD shall contain circuitry to automatically restart after input power outage. This circuitry shall be contained in the same cabinet as the VFD components.

4. The controller shall be of the pulse width modulated (PWM) type.

5. The variable frequency controller shall convert 60 hertz utility power to variable voltage/frequency, A-C power pulse width modulation for motor speed control. The drive shall have one minute rating of 115% of rated current.

6. The variable frequency controller shall have two sections as follows:

a. Converter/Rectifier:

(1) Filter Capacitor Assembly

b. Inverter:

(1) Three identical output power modules.

7. The variable frequency controller shall have the following basic functions:

a. Start/stop and speed selection.

b. VFD Auto/Off.

c. Auto operation via 4 to 20 mA and 0 to 10 VDC control systems.

d. Adjustable timed acceleration and deceleration.

e. Minimum and maximum adjustable speed set limits.

f. Manual operation: UP/DOWN arrows to adjust output.

g. Digital display of output frequency, voltage, current (percentage readings are acceptable for speed only).

h. Ability to lock out specific frequencies.

i. Contacts for alarm notification to energy management system.

j. Local display.

8. The variable frequency controller shall have the following protective devices and/or features:

a. Lockable means of disconnect (or manual disconnect).

b. Input magnetic circuit breaker.

c. Protection for Overcurrent, Ground Fault, Input Phase Loss, Over- Temperature (heatsink), Auxiliary Voltage Short Circuit, Motor Overload (I2t), Overvoltage (+30% of rated), Undervoltage (-35% of rated), Microprocessor Fault, Motor Stall, and Serial Communication Fault.

d. A-C overload function which continuously monitors output current and shuts down D-C module gate signals if motor current exceeds 115% of rated current for one minute.

e. NEMA-1 Construction.

f. Provide low voltage protection on the 110 VAC contactor control circuit (NCC-VNC series or equal).

9. The variable frequency controller shall have the following adjustable controls:

a. Volts/Hertz

b. Acceleration Rate

c. Deceleration Rate

10. The three phase, 3%, impedance input line reactor shall be provided to minimize drive harmonics on the A-C line and protect the drive from damaging electrical system transients.

B. BYPASS: Each drive shall be equipped with an electronic bypass. The bypass shall be by the drive manufacturer. Bypass shall carry the same manufacturer’s warranty as the drive.

1. Electronic Bypass: Electronic shall be equipped with the following:

a. Bypass shall be completely factory wired, UL 508 labeled, and tested electronic bypass.

b. Bypass shall be 2 contactor (output and bypass contactors) with a manual service isolation switch to line voltage only. Manual disconnect for entire VFD and Bypass is not acceptable as service disconnect.

c. VFD input fuses.

d. 3-phase control power capable of +30% to -35% nominal voltage fluctuations.

e. Bypass controls shall be independent of drive controls. Common circuit board for VFD and bypass are not acceptable.

f. 100,000 AIC rating.

g. Bypass shall be by the drive manufacturer.

PART 3 EXECUTION

3.01 INSTALLATION

A. Install variable frequency controllers where indicated on drawings.

B. Install per Manufacturer’s written instructions.

C. Provide adequate space around the VFD for ventilation.

D. Start-up Contractor shall set motor nameplate values.

E. Comply with all setback requirements per NEC.

F. Do not install near outside air ventilation louvers.

G. All maintainable parts and wiring shall be accessible from floor level.

H. If a disconnect is provided on the output of the drive, provide an electrical interlock to disable the VFD when the local disconnect is pulled.

I. Separate conduits for line, load, and control.

J. Permanently set wall anchor nuts with no bolts sticking out of the wall. Stud mounts or lag bolts shall not be accepted.

K. If a local disconnect is provided for the VFD, then a permanently affixed warning label shall be provided on the local disconnect. The label shall read "Do not energize this disconnect without verifying the VFD is powered OFF to prevent damage to the drive".

3.02 DOCUMENTATION

A. Contractor shall provide one copy of Operation and Maintenance Manual and the same information per Division 23 or General Conditions, whichever is more stringent.

END OF SECTION

M M M

V F

D V

F D

V F

D

CH-2 CH-1

ET-1

PCHP-2

CH-3

PCHP-1

(E )8

"C S

(E )8

"C R

(E)8"CWS

CP-3

CP-1

CP-2

(E)8"CWS

PCHP-3

(E )8

"C W

R

(E)8"CR

(E)8"CR

(E )8

"C W

R

(E )8

"C S

(E )8

"C W

S

(E)8"CR

(E )8

"C W

R

(E)8"CS

(E)8"CR

AS-1

(E )1

"C

W R(E

)6 "C

W S

(E )8

"C W

S (E

)1 "C

W S

(E )6

"C W

S (E

)8 "C

W S

(E)10"CWR

4" REFRIGERANT

RELIEF PIPING

TO EXTERIOR

BCU-1

(E)CHEMICAL

TREATMENT

STORAGE

(E)REFRIGERANT

MONITOR

(TYPE-R123)

(E)CHEMICAL

TREATMENT

CABINET

(E)CONTROL

PANEL

(E)EMERGENCY

EXHAUST FAN

CT-2 CT-1

22x16

8" BELOW GRADE

8" BELOW GRADE

8" BELOW GRADE

8" BELOW GRADE8" BELOW GRADE

4" OVERFLOW

2" DRAIN

2" MAKEUP

4" OVERFLOW

2" DRAIN

2" MAKEUP

SCHP-1

SCHP-2

SCHP-3

M1M1

M2

M2

M2

M3

M3

M7

M5

M6

M8

M8

M4

M4

GENERAL NOTES

1. CONTRACTOR SHALL COORDINATE ALL SHUTDOWNS WITH OWNER AND RECEIVE

APPROVAL PRIOR TO EXECUTION.

© Copyright BCER Engineering ALL DRAWINGS, SPECIFICATIONS, AND OTHER WORK PRODUCT PREPARED BY BCER ENGINEERING FOR THIS PROJECT ARE INSTRUMENTS OF SERVICE AND SHALL REMAIN THE PROPERTY OF BCER ENGINEERING. BCER ENGINEERING SHALL RETAIN ALL COMMON LAW, STATUTORY AND OTHER RESERVED RIGHTS, INCLUDING THE COPYRIGHT THERETO.

SHEET NO:

SHEET TITLE:

ISSUE RECORD:

© BCER Engineering Inc.

6555 N. WICKHAM ROAD, SUITE 104

MELBOURNE, FL 32940 | 321.241.4142

CA# 9303

PROGRESS - NOT FOR

CONSTRUCTION

SCALE: As indicated

/1

/2

:3

:1

A

M C

U s e rs \p k o s ia ra \D o c u m e n ts \1

-B a y P o in tE S

C h ill e rR e p la c e m e n t- M e c h -R p k o s ia ra B

C E

R .r v t

MD2.1

DATE: 2/6/2025

DRAWN BY: KAG

CHECKED BY: SDB

EXISTING CHILLER

PLANT - MECHANICAL

DEMOLITION PLAN

B A

Y P

O

IN

T E

S /M

S C

H

IL

LE

R

R E

P

LA

C E

M E

N T

2n d S tr ee t S ou th

S t.

P et er sb ur g, F lo rid a

BCER PROJECT 132324002

N

0 4'4' 2' 1/4" = 1'-0"

1 EXISTING CHILLER PLANT - MECHANICAL DEMOLITION PLAN

NO: DESCRIPTION: DATE:

100% CD 02/05/2025

Permit 04/08/2025

1 Addendum 01 05/12/2025

WORK NOTES

M1 BASE BID: EXISTING END SUCTION PUMP, VALVES, AND ACCESSORIES TO

REMAIN. ADD ALTERNATE #1: REMOVE EXISTING PRIMARY CHILLER PUMPS FOR

REPLACEMENT WITH NEW. REMOVE EXISTING VALVES, CHECK VALVES, AND

Y-STRAINERS.

M2 BASE BID: EXISTING END SUCTION PUMP, VALVES, AND ACCESSORIES TO

REMAIN. ADD ALTERNATE #2: REMOVE EXISTING SECONDARY CHILLER PUMPS

FOR REPLACEMENT WITH NEW. REMOVE EXISTING VALVES, CHECK VALVES,

AND Y-STRAINERS.

M3 REMOVE EXISTING END SUCTION CONDENSER WATER PUMPS FOR

REPLACEMENT WITH NEW.

M4 REMOVE EXISTING VALVES, CHECK VALVES, AND Y-STRAINERS. RETAIN

EXISTING CONTROL VALVES FOR RE-INSTALLATION IN NEW PIPING.

M5 REMOVE EXISTING EXPANSION TANK, ET-1.

M6 REMOVE EXISTING AIR SEPARATOR, AS-1.

M7 REMOVE EXISTING CHILLER, CH-3 AND EXISTING PIPING TO ALLOW FOR PIPING

CONNECTION TO NEW CHILLER. REMOVE AND RETAIN EXISTING CONTROL

VALVES FOR RE-INSTALLATION IN NEW PIPING.

M8 REMOVE EXISTING COOLING TOWER, FOR REPLACEMENT.

M M M

V F

D V

F D

V F

D

CH-3

VFDVFDVFD

GENERAL NOTES

1. 1. CONTRACTOR SHALL BE RESPONSIBLE FOR BECOMING FAMILIAR WITH THE

SPACE PRIOR TO ISSUING A BID.

2. TEST AND BALANCE SERVICES FOR THE CHILLER PRIMARY PUMPS AND THE

REFRIGERANT PURGE EXHAUST FAN ARE OWNER PROVIDED. CONTRACTOR SHALL

EXCLUDE THESE SERVICES.

3. NEW CHILLERS SHALL BE MOVED FROM THE PARKING AREA NORTH OF THE

CHILLER ROOM ALONG THE COVERED PEDESTRIAN PATHWAY TO THE WEST OF

THE CHILLER ROOM AND THROUGH THE MAN DOORS ON THE WEST SIDE.

4. ALL NEW CONTROLS SHALL BE KMC AND SHALL CONNECT TO THE EXISTING KMC

CONTROL SYSTEM.

4" REFRIGERANT

RELIEF PIPING

TO EXTERIOR

(E)CHEMICAL

TREATMENT

STORAGE

(E)REFRIGERANT

MONITOR

(TYPE-R123)

(E)CHEMICAL

TREATMENT

CABINET

(E)CONTROL

PANEL

(E)EMERGENCY

EXHAUST FAN

CH-2 CH-1

BCU-1 (E

)8

"C S

(E )8

"C R

(E)8"CWS(E)8"CWS

(E )8

"C W

R

(E)8"CR

(E)8"CR

(E )8

"C W

R

(E )8

"C S

(E )8

"C W

S

(E)8"CR

(E )8

"C W

R

(E)8"CS

(E)8"CR

(E )1

"C

W R(E

)6 "C

W S

(E )8

"C W

S (E

)1 "C

W S

(E )6

"C W

S (E

)8 "C

W S

(E)10"CWR

SCHP-1

SCHP-2

SCHP-3

PCHP-3

PCHP-1 PCHP-2

CP-3

CP-1

CP-2

AS-1

ET-1

CT-2 CT-3

16"CR 10"CR14"CR

16"CS 14"CS 10"CS

"C

S

8"CS

8"CS

8"CS

"C

R

M14

M16

M11

EXISTING 4" REFRIGERANT

RELIEF PIPING FOR CH-1 &

CH-2 TO EXTERIOR

"C

W R 8 "C

S

(E)8"CS

M13M13

10"CR10"CR

10" EQUILIZER PIPE

UNDER COOLING

M18

M19 M19

ISOLATION VALVE

AND CONTROL VALVE

ON CR PIPE RISER

(TYP)

M20

M21

CT-1

M22

S

M12

M12

M23 M23 ISOLATION VALVE ON

CS PIPE RISER (TYP)

M9M9M9

M10

M10

M24

M25

M27

M15

M15

M15

© Copyright BCER Engineering ALL DRAWINGS, SPECIFICATIONS, AND OTHER WORK PRODUCT PREPARED BY BCER ENGINEERING FOR THIS PROJECT ARE INSTRUMENTS OF SERVICE AND SHALL REMAIN THE PROPERTY OF BCER ENGINEERING. BCER ENGINEERING SHALL RETAIN ALL COMMON LAW, STATUTORY AND OTHER RESERVED RIGHTS, INCLUDING THE COPYRIGHT THERETO.

SHEET NO:

SHEET TITLE:

ISSUE RECORD:

© BCER Engineering Inc.

6555 N. WICKHAM ROAD, SUITE 104

MELBOURNE, FL 32940 | 321.241.4142

CA# 9303

PROGRESS - NOT FOR

CONSTRUCTION

SCALE: As indicated

/1

/2

:3

:1

A

M C

U s e rs \p k o s ia ra \D o c u m e n ts \1

-B a y P o in tE S

C h ill e rR e p la c e m e n t- M e c h -R p k o s ia ra B

C E

R .r v t

M2.1

DATE: 2/6/2025

DRAWN BY: KAG

CHECKED BY: SDB

CHILLER PLANT - NEW

MECHANICAL PLAN

B A

Y P

O

IN

T E

S /M

S C

H

IL

LE

R

R E

P

LA

C E

M E

N T

2n d S tr ee t S ou th

S t.

P et er sb ur g, F lo rid a

BCER PROJECT 132324002

NO: DESCRIPTION: DATE:

100% CD 02/05/2025

Permit 04/08/2025

1 Addendum 01 05/12/2025

WORK NOTES

M9 PROVIDE NEW VFD MOUNTED IN ACCESSIBLE LOCATION ON WALL TO SERVE

NEW COOLING TOWER CELL. COORDINATE MANUFACTURER REQUIRED

CLEARANCES.

M10 PROVIDE NEW BASE MOUNTED CONDENSER WATER PUMPS TO REPLACE

REMOVED PUMPS. PROVIDE NEW ISOLATION VALVES, CHECK VALVES, AND

Y-STRAINERS. REINSTALL EXISTING CONTROL ISOLATION VALVES.

M11 COMPLETELY REMOVE EXISTING CONCRETE CHILLER HOUSEKEEPING

FOOTPADS. POUR NEW CONCRETE PADS TO ACCOMMODATE NEW CHILLER

MOUNTING DIMENSIONS. EACH PAD SHALL BE 4IN. TALL AND BE SIZED SUCH

THAT THE SIZE EXCEEDS THE FOOTPRINT OF THE CHILLER MOUNTING FLANGE

BY NOT LESS THAN 6IN. ON ALL SIDES. TYPICAL OF ALL CHILLER FOOTPADS.

M12 PROVIDE NEW REFRIGERANT 513A (PART#60-0542) SENSOR ON THE WALL NEAR

CH-3. ROUTE CONTROL WIRE FROM SENSOR TO THE EXISTING REFRIGERANT

MONITOR PANEL.

M13 BASE BID: EXISTING BASE MOUNTED PUMP TO REMAIN. ADD ALTERNATE #1:

PROVIDE NEW HORIZONTAL BASE MOUNTED PRIMARY PUMPS (PCHP-1 AND

PCHP-2) TO REPLACE THE EXISTING PUMPS.

M14 INSTALL NEW CENTRIFUGAL CHILLER, CH-3, ON NEW CONCRETE PAD. CONNECT

EXISTING CHILLED WATER SUPPLY PIPING AND EXISTING CHILLED WATER

RETURN PIPING TO NEW CHILLER. RE-INSTALL EXISTING CONTROL VALVES.

CONFIRM ALL REQUIRED CLEARANCES PRIOR TO INSTALLATION.

M15 BASE BID: EXISTING BASE MOUNTED PUMP TO REMAIN. ADD ALTERNATE #2:

PROVIDE NEW HORIZONTAL BASE MOUNTED SECONDARY CHILLED WATER

PUMP (SCHP-1, SCHP-2, AND SCHP-3) TO REPLACE THE EXISTING PUMPS.

M16 EXISTING BUILDING AUTOMATION SYSTEM CONTROL PANEL TO REMAIN.

CONTRACTOR SHALL PROVIDE ALL CONTROLS NECESSARY TO INTEGRATE NEW

CHILLERS AND PUMPS INTO THE EXISTING BUILDING AUTOMATION SYSTEM

CONTROLS.

M18 NEW COOLING TOWERS SHALL REUSE EXISTING CONCRETE COOLING TOWER

SUPPORTS. NEW STRUCTURE SHALL BE PROVIDED TO SPAN THE EXISTING

PIERS TO ACCOMMODATE THE NEW COOLING TOWER FOOTPRINT. REFER TO

STRUCTURAL DRAWINGS FOR STRUCTURAL

M19 ROUTE NEW 2" CW PIPE, 3" OVERFLOW PIPE AND 3" DRAIN PIPE TO THE

EXISTING CW PIPE AND DRAIN PIPE UNDERNEATH THE NEW COOLING TOWER

M20 CONNECT NEW ET-1 TO EXISTING HYDRONIC PIPING.

M21 CONNECT NEW AS-1 TO EXISTING HYDRONIC PIPING.

M22 CHECK AND BALANCE THE EXISTING EXHAUST FAN TO OBTAIN THE NEW

AIRFLOW OF 4025 CFM. SHEAVE THE BELT DRIVE MOTOR IF NECESSARY TO

OBTAIN NECESSARY AIRFLOW.

M23 WATER LEVEL CONTROL IN COOLING TOWER IS CONTROLLED BY MANUAL

MECHANICAL BY FLOAT VALVE.

M24 PROVIDE CONDENSER WATER RETURN PIPING 10'-0" ABOVE GRADE, SUCH THAT

PIPING CAN BE SAFELY WALKED UNDER.

M25 PROVIDE NEW COOLING TOWER CONTROL PANEL IN ACCESSIBLE LOCATION ON

WALL TO SERVE NEW COOLING TOWER. PROVIDE MANUFACTURER REQUIRED

CLEARANCES.

M27 PROVIDE NEW 4" DRAIN TO SERVE NEW COOLING TOWER CELL. CONNECT TO

EXISTING DRAIN UNDER ADJACENT CELL.

N

0 4'4' 2' 1/4" = 1'-0"

1 EXISTING CHILLER PLANT - MECHANICAL PLAN

(E) CH-1CH-3(E) CH-2

CP-3

CP-1

CP-2

CT-1 CT-2

CT-3

8" CR 8" CR

16" CR

8" CR

8" CR

8" CR

8" CR

14" CR 10" CR

16" CS

C S

8" CS

8" CS

C S

C S

C S

8" CS

8" CS

8" CS

8" CS

PCHP-1

PCHP-3

PCHP-2

C S

C S

C S

12" CWR

C W

R

10" CWR 10" CWR

C W

R

C W

R

C W

R

SCHP-1

SCHP-2

SCHP-3

10" CWS

8" CWS

8" CWS

8" CWS

C W

R

C W

S

C W

S

C W

S

C W

S

10" CWS 10" CWS

14" CS 10" CS

AS-1

ET-1

2" CW

C W

2" CW

C W

C W

2" CW

TO ELEMENTARY AND MIDDLE SCHOOL FACILITIES

C R

C R

C R

10" CS 10" CS

C O

N D

E N

S E

R

E V

A P

O R

A T

O R

10" CWR

C O

N D

E N

S E

R

E V

A P

O R

A T

O R

C O

N D

E N

S E

R

E V

A P

O R

A T

O R

4" D 4" D4" D

D

D

D

TO DRAINAGE

MAKE-UP

WATER

BUTTERFLY VALVE

CS AND CR PIPE

RISER (TYP)

(E) VFD

MSCS

1 2 3 4

5 6 7 8

9 10 11 12

(E) VFD

(E) VFD

PUMP SHALL UTILIZE

EXISTING STARTER.

EXISTING CONTROLS

TO REMAIN.

PUMP SHALL UTILIZE

EXISTING STARTER.

EXISTING CONTROLS

TO REMAIN.

13 14

MSCS

15 16

MSCS

17 18

10" EQUALIZING LINE 10" EQUALIZING LINE

CONTROL VALVE ON

CR PIPE RISER (TYP)

19 20 21 22

VFD

23 24 25 26

VFD

27 28 29 30

VFD

T 31

T 32

33 34 35

38 1

TO DRAINAGE 1

1 1

SEQUENCE OF OPERATION

Components Cooling Tower Cells: Three induced draft cells, each with a fan controlled by a variable frequency drive (VFD).

Condenser Water Pumps: Three centrifugal pumps, each piped in parallel with isolation valves and controlled by VFDs.

Temperature Sensors: Condenser water supply (CWS) and return (CWR) temperature sensors.

Flow Sensors: Flow meters on each pump and combined condenser water supply header.

Level Sensors: Basin water level sensors for each cooling tower cell.

Bypass Valve: A modulating valve used for low flow conditions or freeze protection.

Control Panel: BMS (Building Management System) providing automatic control and monitoring of the cooling tower and pump operation.

Note: The chiller condensers, cooling towers, and condenser water pumps all share a common condenser water pipe such that any combination of one chiller, one condenser water pump, and one cooling tower cell may run together. For simplicity, the following shall be the default interlocks:

CH-1, CWP-1, and CT-1 CH-2, CWP-2, and CT-2 CH-3, CWP-3, and CT-3 This interlock schedule may be automatically overridden due to equipment failure or manually by owner control.

Operating Modes

1. Standby Mode (No Cooling Demand) All cooling tower fans and pumps are off. All cooling tower cell control valves are closed.

Basin water level is maintained via mechanical make-up valves as needed.

2. Cooling Demand Mode (Normal Operation) Upon call for a chiller to start, the following operations shall be executed in sequence:

Open the cooling tower control valve.

Start one condenser water pump Upon proof of condenser water flow at chiller condenser, start the chiller.

The cooling tower fan shall initially be stopped. If the condenser water supply temperature setpoint cannot be satisfied with the cooling tower fan stopped, the cooling tower fan speed shall modulate to maintain the condenser water supply setpoint, 85°F (adj.).

3. Chiller Rotation and Lead/Lag Control If not already included in the existing BMS logic, the lead chiller shall be rotated periodically (weekly, or as defined by the owner) to ensure even wear.

During rotation, the next available chiller becomes the lead, and the previous lead chiller moves to lag position.

Chiller failure results in automatic switchover to the next available chiller and an alarm sent to the BMS.

4. Pump Rotation & Lead/Lag Control The lead pump shall be rotated periodically with the lead chiller.

During rotation, the default interlocks noted above shall dictate the lag pump (unless the pump is failed or locked out).

Pump failure or lockout results in automatic switchover to the next available pump (overriding the default interlock schedule) and an alarm sent to the BMS.

5. Cooling Tower Cell Rotation & Lead/Lag Control The lead cooling tower shall be rotated periodically with the lead chiller.

During rotation, the default interlocks noted above shall dictate the lag cooling tower (unless the cooling tower is failed or locked out).

Cooling tower failure or lockout results in automatic switchover to the next available cooling tower (overriding the default interlock schedule) and an alarm sent to the BMS.

6. Emergency Shutdown Upon activation of a chiller plant emergency stop signal (refrigerant monitor alarm or e-stop signal), all pumps and fans are stopped, and isolation valves are closed. Alarms are triggered, and manual reset is required to resume normal operation.

Alarming & Monitoring High and low temperature alarms for CWS and CWR.

Low flow alarm.

Pump failure and fan failure alarms.

Communication failure alarms.

Control Points Summary VFD Speed Control (Pumps & Fans) CT Control Valve Position Temperature Setpoints Pump and Fan Status Feedback

NOTE: THE EXISTING REFRIGERANT MONITOR SEQUENCE AND EXISTING EXHAUST FAN SEQUENCE SHALL REMAIN.

© Copyright BCER Engineering ALL DRAWINGS, SPECIFICATIONS, AND OTHER WORK PRODUCT PREPARED BY BCER ENGINEERING FOR THIS PROJECT ARE INSTRUMENTS OF SERVICE AND SHALL REMAIN THE PROPERTY OF BCER ENGINEERING. BCER ENGINEERING SHALL RETAIN ALL COMMON LAW, STATUTORY AND OTHER RESERVED RIGHTS, INCLUDING THE COPYRIGHT THERETO.

SHEET NO:

SHEET TITLE:

ISSUE RECORD:

© BCER Engineering Inc.

SCALE: NOT TO SCALE

6555 N. WICKHAM ROAD, SUITE 104

MELBOURNE, FL 32940 | 321.241.4142

CA# 9303

PROGRESS - NOT FOR

CONSTRUCTION

/1

/2

:3

:1

A

M C

U s e rs \p k o s ia ra \D o c u m e n ts \1

-B a y P o in tE S

C h ill e rR e p la c e m e n t- M e c h -R p k o s ia ra B

C E

R .r v t

M5.1

DATE: 2/6/2025

DRAWN BY: KAG

CHECKED BY: SDB

MECHANICAL

SCHEMATICS

B A

Y P

O

IN

T E

S /M

S C

H

IL

LE

R

R E

P

LA

C E

M E

N T

2n d S tr ee t S ou th

S t.

P et er sb ur g, F lo rid a

BCER PROJECT 132324002

NOT TO SCALE

1 MECHANICAL FLOW DIAGRAM

COOLING TOWER SYSTEM POINTS LIST

P O

IN

T

I D

E N

T

IF

IE

R

N U

M B

E R

SYSTEM POINT DESCRIPTION P

O

IN

T

T Y

P E

B

I, A

I, B

O A

O

S H

O W

O N

S Y

S T

E M

G R

A F

H

IC

IN

C

L U

D E

D A

T A

I N

T R

E N

D L

O G

IN

C

L U

D E

D A

T A

I N

T R

E N

D G

R A

P H

A L A

R M

C O

N D

IT

IO

N S

NOTES

1 SCHP-1 STATUS - HOA/ALARM BI X X VIA BACNET

2 SCHP-1 STOP/START BO X VIA BACNET

3 SCHP-1 VFD SPEED AO X X X VIA BAS

4 SCHP-1 VFD POSITION FEEDBACK AI X X X VIA BACNET

5 SCHP-2 STATUS - HOA/ALARM BI X X VIA BACNET

6 SCHP-2 STOP/START BO X VIA BACNET

7 SCHP-2 VFD SPEED AO X X X VIA BAS

8 SCHP-2 VFD POSITION FEEDBACK AI X X X VIA BACNET

9 SCHP-3 STATUS - HOA/ALARM BI X X VIA BACNET

10 SCHP-3 STOP/START BO X VIA BACNET

11 SCHP-3 VFD SPEED AO X X X VIA BAS

12 SCHP-3 VFD POSITION FEEDBACK AI X X X VIA BACNET

13 CP-3 STATUS-CURRENT SENSOR BI X X

14 CP-3 STOP/START BO X

15 CP-1 STATUS-CURRENT SENSOR BI X X

16 CP-1 STOP/START BO X

17 CP-2 STATUS-CURRENT SENSOR BI X X

18 CP-2 STOP/START BO X

19 CT-1 FAN STATUS - HOA/ALARM BI X X VIA BACNET

20 CT-1 FAN STOP/START BO X VIA BACNET

21 CT-1 FAN VFD SPEED AO X X X VIA BAS

22 CT-1 FAN VFD POSITION FEEDBACK AI X X X VIA BACNET

23 CT-2 FAN STATUS - HOA/ALARM BI X X VIA BACNET

24 CT-2 FAN STOP/START BO X VIA BACNET

25 CT-2 FAN VFD SPEED AO X X X VIA BAS

26 CT-2 FAN VFD POSITION FEEDBACK AI X X X VIA BACNET

27 CT-3 FAN STATUS - HOA/ALARM BI X X VIA BACNET

28 CT-3 FAN STOP/START BO X VIA BACNET

29 CT-3 FAN VFD SPEED AO X X X VIA BAS

30 CT-3 FAN VFD POSITION FEEDBACK AI X X X VIA BACNET

31 CS TEMPERATURE AI X X X X

32 CR TEMPERATURE AI X X X X

33 EXISTING CH-2 CONTROL VALVE BO X X

34 EXISTING CH-3 CONTROL VALVE BO X X

35 EXISTING CH-1 CONTROL VALVE BO X X

36 EXISTING CP-2 ISOLATION CONTROL VALVE BO X X

37 EXISTING CP-1 ISOLATION CONTROL VALVE BO X X

38 EXISTING CP-3 ISOLATION CONTROL VALVE BO X X

NO: DESCRIPTION: DATE:

100% CD 02/05/2025

Permit 04/08/2025

1 Addendum 01 05/12/2025

DP

6" MIN.

BUTTERFLY VALVE (TYP.)

(ISOLATION DUTY)

CHECK VALVE

FILL PUMP BASE WITH

NON-SHRINK GROUT

LEVEL TO TOP

BASE MOUNTED

CENTRIFUGAL PUMP

SHIM PUMP BASE 1" ABOVE

PAD; BOLT PUMP BASE TO

PAD WHEN LEVEL

GUARD

FLEXIBLE PUMP

CONNECTION (TYP.)

DIFFERENTIAL PRESSURE

SWITCH FLOW INDICATOR

P&T (TYP.)CHEMICAL FEED

CONNECTION

(TYP. 2)

STRAINER WITH

BLOW OFF VALVE

SUPPORT PIPE FROM

HOUSEKEEPING PAD

EXISTING CONCRETE PAD TO BE

REUSED.

5 PIPE

DIA'S MIN.

VENTURI BALANCING

VALVE ASSEMBLY

EXISTING INLET

PIPING TO BE

REUSED.

EXISTING DISCHARGE

PIPING TO BE REUSED.

E X

IS

T

IN

G

W O

R K

N E

W

W

O R

K

E X

IS

T

IN

G

W O

R K

N E

W

W

O R

K

C W

S

C W

R

CONCRETE PAD

FLOOR

P/T (TYP.)

EVAPORATOR

CONDENSER

FLEX CONNECTION

(TYP)

(2)1" RELIEF VALVES

1" RELIEF VALVE

4"

ELEC.

PNL

ELEC.

PNL

VFD

TRANSFER VALVE

MAGNETIC

COMP & DRIVE

CONTROL PANEL

EXISTING 4" REFRIGERANT

RELIEF PIPING UP THRU

BUILDING WALL.

DRAIN

VALVE

C S

C R

3/4" DRAIN VALVE

W/ HOSE END

MARINE BOX (TYP)

FACTORY SUPPLIED

VIBRATION ISOLATOR

(TYP)

REFER TO PLAN VIEW

FOR CONNECTION TO

EXISTING

REFER TO PLAN VIEW

FOR CONNECTION TO

EXISTING

CONTROL

VALVE

REUSE EXISTING REFRIGERANT MONITOR PANEL. GENESIS INTERNATIONAL,

INC. SHERLOCK 204 SYSTEM. THE MONITOR SHALL BE INFRARED NON-

DISPERSIVE DETECTION TYPE FACTORY CALIBRATED FOR ALL SELECTED

REFRIGERANTS. THE MONITOR SHALL HAVE A SENSITIVITY OF +/1 PPM AT 77°F.

SAMPLING SHALL BE CONTINUOUS. MONITOR SHALL BE EQUIPPED WITH (2)

RELAYS, INDICATOR LIGHTS (FOR POWER, STATUS AND ALARM) AND A DIGITAL

READOUT.

PROVIDE CONTROL WIRING TO IR REFRIGERANT GAS DETECTION SENSOR.

REFER TO PLANS FOR IR SENSOR LOCATIONS.

PROVIDE KEYED SWITCHES FOR SILENCING THE ALARM. THE SWITCH SHALL

SILENCE THE AUDIBLE ALARM ONLY AND SHALL NOT HALT REFRIGERANT

EXHAUST FAN OPERATION. SWITCHES SHALL BE LABELED "REFRIGERANT

ALARM SILENCE". TWO SWITCHES SHALL BE PROVIDED. THE FIRST SHALL BE

LOCATED OUTSIDE THE CHILLER ROOM ON THE WEST EXTERIOR WALL

BETWEEN THE MAN DOORS. THE SECOND SHALL BE LOCATED IN THE

CORRIDOR OUTSIDE THE CHILLER ROOM ON THE EAST CHILLER ROOM WALL

DIRECTLY ADJACENT TO THE MAN DOOR.

WALL MOUNTED SIGN BELOW HORN/STROBE. PROVIDE PLASTIC MELAMINE

LAMINATE WHITE SIGN WITH RED LETTERING (MINIMUM 2" HIGH).

PROVIDE IDENTICAL SETUP (HORN/LIGHT/SIGN) INSIDE OF CHILLER ROOM AND

OUTSIDE OF EACH CHILLER ROOM DOOR.

PROVIDE SIGN ON DOOR: "DO NOT ENTER WHEN ALARM IS SOUNDING AND

STROBE IS LIT."

ALARM

REFRIGERANT R

E

F R

IG

E

R A

N T

A L A

R M

T O

B A

S

S P

IL

L A

L A

R M

T O

B A

S

M O

N

IT

O R

F A

U L T

T O

B A

S

DOORS

ROOMCHILLER

DOORS TO CHILLER ROOM

WALL

MOUNTED

ALARM LIGHT

AND

HORN(24VDC)

FROM BAS

WORK NOTES:

A. THE REFRIGERANT MONITOR SHALL BE SET TO ALARM AT A LEVEL OF

650 (ADJ.) PPM. THE LIGHTS AND HORNS SHALL ACTIVATE AND THE

VENTILATION SYSTEM SHALL GO TO HIGH SPEED UNTIL THE SYSTEM IS

MANUALLY RESET.

MONITOR ALARM SEQUENCE

2" CW UNDER

PLATFORM.

CT-1

LADDER

"C

S

"C

R

10" EQUALIZATION

PIPE WITH BFV

EXISTING TOWER

SUPPORTS TO BE

MODIFIED BY

STRUCTURAL;

REFER TO

STRUCTURAL

DRAWINGS

RAILING (TYP.)

D

CT-2 CT-3

(E)2" CW

Ø C

R

16"Ø CR

Ø C

R

Ø C

R

Ø C

S

16"Ø CS

Ø C

S

Ø C

S

14"Ø CS 10"Ø CS

14"Ø CR 10"Ø CR

(E)4" D ROUTED

UNDER CT

10" EQUALIZATION

PIPE WITH BFV

ISOLATION

VALVES (TYP)

CONTROL

VALVE (TYP)

D D

3" D

2" CW UNDER

PLATFORM.

3" D

DP

WORK NOTES:

PROVIDE 1/2" DIA. ANCHOR BOLTS FOR PUMP BASE CONNECTION. EXTEND TO

FLOOR (THROUGH BASE PAD) TO ALLOW FOR SIESMIC CONSIDERATIONS.

PROVIDE 1/2" DIA. STEEL

ANCHOR RODS BETWEEN

BASE AND FLOOR

FILL PUMP BASE WITH NON-

SHRINK GROUT LEVEL TO TOP

BASE MOUNTED

CENTRIFUGAL PUMP

SHIM PUMP BASE 1" ABOVE

CONCRETE PAD; BOLT PUMP

BASE TO PAD WHEN LEVEL

GUARD

1/2" (TYP.)

BALL VALVE (TYP.)

P&T (TYP.)

DIFFERENTIAL PRESSURE

SWITCH FLOW INDICATOR

FLEXIBLE PUMP

CONNECTION (TYP.)

CHECK VALVE

BUTTERFLY VALVE (TYP.)

(ISOLATION DUTY)

6" MIN.

USE CONCENTRIC

REDUCER TO TRANSITION

FROM BRANCH PIPE SIZE

TO PUMP SUCTION SIZE

CHEMICAL FEED

CONNECTION (TYP. 2)

PRESSURE GAUGE WITH BALL

COCKS AT INLET AND

DISCHARGE OF PUMP AND

INLET TO SUCTION DIFFUSER

SUCTION DIFFUSER

SIZED TO MATCH PUMP

SUCTION DIAMETER

SUPPORT PIPE FROM

HOUSEKEEPING PAD

4" CONCRETE PAD BY G.C., M.C.

TO COORDINATE SIZE WITH G.C.

VENTURI BALANCING

VALVE ASSEMBLY

1 1

E X

IS

T

IN

G

W O

R K

N E

W

W

O R

K

E X

IS

T

IN

G

W O

R K

N E

W

W

O R

K

EXISTING DISCHARGE

PIPING TO BE REUSED

EXISTING INLET PIPING

TO BE REUSED

© Copyright BCER Engineering ALL DRAWINGS, SPECIFICATIONS, AND OTHER WORK PRODUCT PREPARED BY BCER ENGINEERING FOR THIS PROJECT ARE INSTRUMENTS OF SERVICE AND SHALL REMAIN THE PROPERTY OF BCER ENGINEERING. BCER ENGINEERING SHALL RETAIN ALL COMMON LAW, STATUTORY AND OTHER RESERVED RIGHTS, INCLUDING THE COPYRIGHT THERETO.

SHEET NO:

SHEET TITLE:

ISSUE RECORD:

© BCER Engineering Inc.

SCALE: NOT TO SCALE

6555 N. WICKHAM ROAD, SUITE 104

MELBOURNE, FL 32940 | 321.241.4142

CA# 9303

PROGRESS - NOT FOR

CONSTRUCTION

/1

/2

:3

:1

A

M C

U s e rs \p k o s ia ra \D o c u m e n ts \1

-B a y P o in tE S

C h ill e rR e p la c e m e n t- M e c h -R p k o s ia ra B

C E

R .r v t

M6.1

DATE: 2/6/2025

DRAWN BY: KAG

CHECKED BY: SDB

MECHANICAL DETAILS

B A

Y P

O

IN

T E

S /M

S C

H

IL

LE

R

R E

P

LA

C E

M E

N T

2n d S tr ee t S ou th

S t.

P et er sb ur g, F lo rid a

BCER PROJECT 132324002

NOT TO SCALE

5 END SUCTION PUMP DETAIL > 2-1/2" W/O SUCTION DIFFUSER, FOR CT-1, CT-2, & CT-3

NOT TO SCALE

4 CENTRIFUGAL HIGH PRESSURE CHILLER

NOT TO SCALE

1 REFRIGERANT MONITOR DETAIL

NOT TO SCALE

3 COOLING TOWER ELEVATION/PLAN DETAIL

NOT TO SCALE

2 END SUCTION PUMP DETAIL > 2-1/2" W/ SUCTION DIFFUSER

NO: DESCRIPTION: DATE:

100% CD 02/05/2025

Permit 04/08/2025

1 Addendum 01 05/12/2025

Addendum

Bay Point Chiller/Tower Replacement

May 12, 2025

Drawing ED 2.1 Keynote E3, specifies to maintain existing Cooling Tower Disconnects, whereas

Drawing E 2.1 Keynote E7 is calling for the removal of Cooling Tower Disconnects. Also, the

Cooling Tower equipment schedule on drawing

M0.2, Note #2, has a unit mounted disconnect switch for each. Need clarification?

Existing disconnects shall be removed and a unit mounted disconnect shall be provided. Keynote

E3 shall be modify to state “DISCONNECT

EXISTING COOLING TOWER AND REMOVE

EXISTING DISCONNECT

SWITCH. MAINTAIN CONDUIT AND WIRING FOR

RECONNECTION. EXTEND CONDUIT AND

WIRING TO NEW CONNECTION LOCATION AS

REQUIRED.

If Cooling Towers have a factory mounted disconnect, will they be provided with an auxiliary contact, since it will be on the load side of the

VFD.

Yes, the factory mounted disconnect shall come with an auxiliary contact.

Panel Schedule on drawing E2.1 has Chiller #3

MOCP at 600A, but the new chiller submittal requires an 800 A breaker. Need to verify that the existing breaker is suitable for the new equipment, or will the breaker need to be upsized?

The MCA for the chiller is 404A. 600A is sufficient being it will be on a VFD.

Need clarification M2.1 M11 & M14. M11 states remove existing chiller pad and pour new pad.

M14 states install chiller on existing pad. Which note is to be followed?

Keynote M14 has been updated to align with new chiller pad called out in M11.

VFD is to be provided by the Tower supplier.

There is no schedule or details in specifications on what is needed to be provided.

A specification for a standalone VFD provided as part of this Addendum package.

M6.1 tower piping detail does not match M2.1 piping layout. Will a correct detail be provided?

Detail 3/M6.1 has been updated to reflect the piping shown on M2.1.

Will a piping support detail or specification be provided?

Piping support shop drawings to be provided by contractor for review during Construction

Administration phase.

MD2.1- Note M4 does it include control isolation valves? If so do they get replaced per M2.1 note

M11.

Keynotes updated to provide clarity. Control isolation valves removed and re-installed in new piping.

Will alternate design for cooling towers be considered?

At this time no alternate design for cooling towers is being considered.

Will chiller submittals be posted? Refer to the attached chiller submittal

Controls clarification All new controls shall be KMC and shall connect to the existing KMC control system.

ATTACHMENTS:

1. Chiller shop drawing.

2. VFD specification.

3. Drawings MD2.1, M2.1, M5.1, and M6.1

END OF ADDENDUM