Addendum 3

Date: August 11, 2026

General Comments

1. N/A

Pre-bid Request for Information

1. Are we able to use the Daikin Maverick II for the AHU's and the York YCAL0060 for the chiller?

a. The electrical demand and performance are set. Meet performance and do not exceed electrical demands. If both are met, we take no exception to the proposed options. Again, performance minimum per building and maximum electrical capacity must be met.

2. Are there any other addenda? Has the bid form been revised to reflect Alternate 2?

a. Yes, Addendum 1 and 2

b. Yes, Spec section 01 23 00 Alternate 2 and Alternate 3 have been updated

CHANGES TO THE SPECIFICATIONS

1. Section 01 23 00 - Alternates

a. Updated to include labor and material costs associated with S202 boiler and additional

80-ton modular section for chiller CH-1.

SOUTH CAMPUS HVAC UPGRADES

Rowan-Cabarrus Community College 1531 Trinity Church Road

Concord, NC 28027

SCO # 23-26928-01BIFB # 121-071426JA

CMTA 223.081

Owner: Rowan-Cabarrus Community College

Engineer: CMTA, Inc.

CHANGES TO THE DRAWINGS

1. Sheet G000 – COVER SHEET

a. Added note about installing emergency connections for chiller in S203.

2. Sheet G101 – BUILDING S201 FLOOR PLANS

a. Added notes and changed walls to be demolished during construction.

3. Sheet M002 – MECHANICAL SCHEDULES

a. Added note to Temporary Packaged AHU Schedule to provide compressor blankets.

4. Sheet M110 – S201 OVERALL PLAN

a. Added General note about phased construction that may require overtime and/or weekend work coordinated with owner.

5. Sheet M212 – S202 MECHANICAL ROOM TEMPORARY HVAC PLAN AND SECTION

a. Removed text conflicting with Scheduling Consideration general note on sheet.

6. Sheet M311 - S203 MECHANICAL ROOM FLOOR PLANS

a. Added notes showing emergency taps for possible temporary chiller during construction.

ATTACHMENTS

Spec 01 23 00 – Alternates Sheet G000 – COVER SHEET Sheet G101 – BUILDING S201 FLOOR PLANS Sheet M002 – MECHANICAL SCHEDULES Sheet M110 – S201 OVERALL PLAN Sheet M212 – S202 MECHANICAL ROOM TEMPORARY HVAC PLAN AND SECTION Sheet M311 - S203 MECHANICAL ROOM FLOOR PLANS

ZOOM LINK FOR BID OPENING

END OF ADDENDUM 3

RCCC South Campus HVAC Upgrades 223.081

SCO #23-26928-01B

Addendum 3

08.11.2026

ALTERNATES 01 23 00 - 1

SECTION 01 23 00 - ALTERNATES

PART 1 - GENERAL

1.1 SUMMARY:

A. This Section includes administrative and procedural requirements for alternates.

1.2 DEFINITIONS:

A. Alternate: An amount proposed by bidders and stated on the Bid Form for certain work defined in the Bidding Requirements that may be added to or deducted from the Base Bid amount if Owner decides to accept a corresponding change either in the amount of construction to be completed or in the products, materials, equipment, systems, or installation methods described in the Contract Documents.

B. The cost or credit for each alternate is the net addition to or deduction from the Contract Sum to incorporate alternate into the Work. No other adjustments are made to the Contract Sum.

1.3 PROCEDURES:

A. Coordination: Modify or adjust affected adjacent work as necessary to completely integrate work of the alternate into Project.

B. Include as part of each alternate, miscellaneous devices, accessory objects, and similar items incidental to or required for a complete installation whether or not indicated as part of alternate.

C. Notification: Immediately following award of the Contract, notify each party involved, in writing, of the status of each alternate. Indicate if alternates have been accepted, rejected, or deferred for later consideration. Include a complete description of negotiated modifications to alternates.

D. Execute accepted alternates under the same conditions as other work of the Contract.

E. Schedule: A Schedule of Alternates is included at the end of this Section. Specification Sections referenced in schedule contain requirements for materials necessary to achieve the work described under each alternate.

PART 2 - PRODUCTS (Not Used)

RCCC South Campus HVAC Upgrades 223.081

SCO #23-26928-01B

Addendum 3

08.11.2026

ALTERNATES 01 23 00 - 2

PART 3 - EXECUTION

3.1 SCHEDULE OF ALTERNATES

Alternate No. 1: Provide building automation system and integration per mechanical plans and specification section 23 09 00, 23 09 02, 23 09 03, 23 09 04 as installed/programmed by Environmental Control & Mechanical.

Dollars ($ )

Alternate No. 2: Provide labor and materials to demolish and replace the existing boiler system in Building S202 per mechanical sheet M201 and specification sections.

Dollars ($ )

Alternate No. 3: Provide labor and materials to provide an additional 80-ton (960 MBH) modular section to Chiller CH-1 scheduled on sheet M002.

Dollars ($ )

END OF SECTION 01 23 00

VICINITY MAP

DESIGN TEAM

MECHANICAL & ELECTRICAL ENGINEERS

8801 J.M. KEYNES DR.

SUITE 240

CHARLOTTE, NC 28262

704.376.7072 www.CMTA.com

S201

S201

BASE BID:

FOR AHU-1 REPLACEMENT IN BUILDINGS S201 & S202, THE INTENT IS

FOR CONTRACTOR TO PROVIDE TEMPORARY AIR HANDLING UNITS TO

HEAT/COOL BUILDINGS DURING DEMOLITION AND INSTALLATION OF

THE NEW UNITS. NEW AND TEMPORARY DUCTWORK AND PIPING SHALL

BE CONSTRUCTED AHEAD OF ANY SHUTDOWNS AND COORDINATED

WITH RCCC TO MINIMIZE DOWNTIME. UPON COMPLETION OF BOTH AIR

HANDLING UNIT REPLACEMENTS, CONTRACTOR SHALL REMOVE THOSE

UNITS. PROVIDE TEMPORARY CHILLER CONNECTIONS FOR BUILDING

S203.

FOR S203, PROVIDE A TEMPORARY 40-TON CHILLER.

UNDER MECHANICAL ALTERNATE NO. 2, BOILER B-1 IN BUILDING S202

SHALL BE REPLACED. SEE SHEET M216 FOR MORE INFORMATION.

8801 J.M. Keynes Drive, Suite 240 Charlotte, NC 28262

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G000

ROWAN-CABARRUS COMMUNITY

COLLEGE

1531 TRINITY CHURCH RD, CONCORD, NC,

28027

ROWAN-CABARRUS

COMMUNITY COLLEGE

1531 TRINITY CHURCH RD,

CONCORD, NC, 28027

8/10/2026

CMTA: 223.081.00

COVER SHEET

SCO: 23-26928-01B

SHEET INDEX

NUMBER NAME

00 - GENERAL

G000 COVER SHEET

G001 APPENDIX B - S201

G002 APPENDIX B - S202

G003 APPENDIX B - S203

G004 PARTITION DETAILS

G101 BUILDING S201 FLOOR PLANS

G102 BUILDING S202 FLOOR PLAN

G103 BUILDING S203 FLOOR PLAN

G104 BUILDING S201 PARTIAL FLOOR PLANS AND SECTIONS - DEMOLITION AND NEW WORK

01 - FIRE PROTECTION

FP001 FIRE PROTECTION NOTES, SYMBOLS, AND SCHEDULES

FP101 FIRE PROTECTION PLANS - BUILDINGS S201 AND S202

02 - MECHANICAL

M001 MECHANICAL SYMBOL LEGEND, NOTES AND DRAWING LIST

M002 MECHANICAL SCHEDULES

M003 MECHANICAL SITE PLAN

M110 S201 OVERALL PLAN

M111 S201 MECHANICAL ROOM INITIAL HVAC DEMOLITION PLAN AND SECTION

M112 S201 MECHANICAL ROOM TEMPORARY HVAC PLAN AND SECTION

M113 S201 MECHANICAL ROOM HVAC DEMOLITION PLAN AND SECTION

M114 S201 MECHANICAL ROOM AHU NEW WORK AND TEMPORARY DEMOLITION PLAN AND SECTION

M115 S201 MECHANICAL ROOM HVAC NEW WORK PLAN AND SECTION

M116 S201 MECHANICAL ROOM FINAL HVAC DEMOLITION PLAN AND SECTION

M121 S201 MECHANICAL ROOM PIPING CH-1 DEMOLITION PLAN AND SECTION

M122 S201 MECHANICAL ROOM PIPING CH-1 NEW WORK PLAN AND SECTION

M123 S201 MECHANICAL ROOM PIPING CH-2 DEMOLITION PLAN AND SECTION

M124 S201 MECHANICAL ROOM PIPING CHWP-2 & CDWP-2 NEW WORK PLAN AND SECTION

M210 S202 OVERALL PLAN

M211 S202 MECHANICAL ROOM INITIAL HVAC DEMOLITION PLAN AND SECTION

M212 S202 MECHANICAL ROOM TEMPORARY HVAC PLAN AND SECTION

M213 S202 MECHANICAL ROOM TEMPORARY HVAC DEMOLITION PLAN AND SECTION

M214 S202 MECHANICAL ROOM HVAC NEW WORK PLAN AND SECTION

M215 S202 MECHANICAL ROOM FINAL HVAC DEMOLITION PLAN AND SECTION

M216 MECHANICAL ALTERNATE NO. 2 BUILDING S202 BOILER ROOM

M310 S203 OVERALL FLOOR PLAN

M311 S203 MECHANICAL ROOM FLOOR PLANS

M401 S201 ENLARGED MECHANICAL ROOM PLAN - FINAL STATE

M402 S201 ENLARGED MECHANICAL ROOM FLOOR PLANS - FINAL STATE

M403 S201 ENLARGED FLOOR PLANS - CONTROLS REPLACEMENT

M501 CENTRAL PLANT SCHEMATIC PIPE DIAGRAMS

M502 TEMPERATURE CONTROL DIAGRAMS AND SEQUENCES

M503 TEMPERATURE CONTROL DIAGRAMS AND SEQUENCES

M504 CONDENSER WATER CONTROL DIAGRAM

M601 MECHANICAL DETAILS

M602 MECHANICAL DETAILS

03 - ELECTRICAL

E001 ELECTRICAL LEGEND, NOTES & SCHEDULES

E002 ELECTRICAL SITE PLAN

E201 S201 FIRST FLOOR POWER

E202 S202 FIRST FLOOR POWER

E203 S203 FIRST FLOOR POWER - ALTERNATE 1

E204 S201 ENLARGED MECH/ELEC ROOM - PHASE 1

E205 S202 ENLARGED MECH/ELEC ROOM - PHASE 1

E601 PANEL SCHEDULES & POWER RISER DIAGRAM

E701 ELECTRICAL DETAILS

E702 ELECTRICAL DETAILS

ROWAN-CABARRUS

COMMUNITY COLLEGE

SOUTH CAMPUS HVAC

UPGRADES

BID DOCUMENTS

7/21/2026

SCO Project Number: 23-26928-01B

# Date Description

1 10/10/2025 100% DD SET

2 12/12/2025 100% CD SET

3 03/23/2026 100% Construction Documents

4 07/21/2026 BID DOCUMENTS

6 08/10/2026 ADDENDUM 2

MECHANICAL

ROOM

INTAKE

AREAWAY

RELIEF

AREAWAY

REMOVE INNER DOORS. MODIFY

OUT DOORS WITH PANIC BARS

AND HANDLES ON THE OUTSIDE.

NO WORK IN

SHADED AREA

CORRIDOR

REMOVE EXISTING WALLS AND DOOR FOR

CONSTRUCTION. REBUILD WALLS AFTER

CONSTRUCTION. SEE DETAIL 2 ON SHEET G104.

REMOVE EXISTING WALLS FOR

CONSTRUCTION. REBUILD

WALLS AFTER CONSTRUCTION.

SEE DETAIL 9 ON SHEET G104.

PROVIDE TEMPORARY 2

HOUR CMU WALL. SEE

TYPE H ON SHEET G004.

ADD (2) LAYERS OF 5/8" GYP. BD.

TYPE "X" TO THIS SIDE OF EXISTING

1 HOUR RATED WALL. SIMILIAR TO

TYPE D ON SHEET G004.

REMOVE EXISTING CMU

WALL AS REQUIRED DURING

AHU REPLACEMENT. SEE

TYPE K ON SHEET G004.

MECHANICAL

ROOM

RELIEF

AREAWAY

INTAKE

AREAWAY

REMOVE INNER DOORS. MODIFY

OUT DOORS WITH PANIC BARS

AND HANDLES ON THE OUTSIDE.

NO WORK IN

SHADED AREA

WALL RATING LEGEND

NON-RATED PARTITION

1 HR. RATED PARTITION TO DECK

2 HR. RATED PARTITION TO DECK

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G101

ROWAN-CABARRUS COMMUNITY

COLLEGE

1531 TRINITY CHURCH RD, CONCORD, NC,

28027

ROWAN-CABARRUS

COMMUNITY COLLEGE

1531 TRINITY CHURCH RD,

CONCORD, NC, 28027

8/10/2026

CMTA: 223.081.00

BUILDING S201 FLOOR PLANS

SCO: 23-26928-01B

0 4' 8' 16'4'

3/32" = 1'-0"G101

1 BUILDING S201 - EXISTING FLOOR PLAN

3/32" = 1'-0"G101

2 BUILDING S201 - TEMPORARY FLOOR PLAN

0 4' 8' 16'4'

# Date Description

3 03/23/2026 100% Construction Documents

4 07/21/2026 BID DOCUMENTS

N

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M002

ROWAN-CABARRUS COMMUNITY

COLLEGE

1531 TRINITY CHURCH RD, CONCORD, NC,

28027

ROWAN-CABARRUS

COMMUNITY COLLEGE

1531 TRINITY CHURCH RD,

CONCORD, NC, 28027

8/10/2026

CMTA: 223.081.00

MECHANICAL SCHEDULES

SCO: 23-26928-01B

PUMP SCHEDULE

MARK

BASIS OF DESIGN (B&G)

TYPE

UNIT

SERVED

FLOWRATE

(GPM)

FT.

HEAD

ELECTRICAL DATA RATED

SPEED

(RPM)

% EFF. REMARKS

SERIES MODEL NO. HP VOLTS PH.

CDWP-1 e-1510 4 BD END SUCTION CT-1 640 40 15.00 460 3 1800 84.90% 1, 2

CDWP-2 e-1510 4 BD END SUCTION CT-2 640 40 15.00 460 3 1800 84.90% 1, 2

CHWP-1 e-1510 3 BD END SUCTION CH-1 480 45 10.00 460 3 1800 82.00% 1, 2

CHWP-2 e-1510 4 BD END SUCTION CH-1 480 45 10.00 460 3 1800 82.00% 1, 2

CP-1 e-1510 4 BD END SUCTION HX-1 500 40 7.50 460 3 1800 71.50% 1, 2

CP-2 e-1510 4 BD END SUCTION HX-1 500 40 7.50 460 3 1800 71.50% 1, 2

REMARKS:

1. PUMP EFFICIENCIES LISTED ARE MINIMUM EFFICIENCIES ACCEPTABLE, DO NOT SUBMIT LESS EFFICIENT PUMPS.

2. ACCEPTABLE MANUFACTURERS: BELL & GOSSETT, TACO, AND PATTERSON.

3. PROVIDE VARIABLE FREQUENCY DRIVE. ELECTRICAL CONTRACTOR TO PROVIDE POWER CONNECTION.

REMARKS:

1. PROVIDE WITH FACTORY START-UP UTILIZING MANUFACTURERS STANDARD FORMS AND THE FORMS INCLUDED IN THE SPECIFICATIONS.

2. ENTIRE UNIT SHALL BE DOUBLE WALL CONSTRUCTION WITH 6” BASE RAIL.

3. SUPPLY STAINLESS STEEL IAQ CONDENSATE PAN. ENTIRE DRAIN SHALL BE PITCHED TO OUTLET. WATER CARRY OVER IS NOT ALLOWED. SELECT CHILLED WATER COILS ACCORDINGLY. PROVIDE STAINLESS STEEL INTERMEDIATE DRAIN PANS FOR STACKED CHILLED WATER COILS ALL PRE-PIPED TO MAIN DRAIN PAN.

4. CHILLED WATER COILS SHALL BE A MAXIMUM OF 8 ROWS AND 10 FPI

5. PROVIDE STAINLESS STEEL CHILLED WATER COIL CASING.

6. REFER TO DRAWINGS FOR FULL UNIT CONFIGURATION

7. PROVIDE FACTORY MOUNTED OUTSIDE, RETURN, AND RELIEF AIR DAMPERS. THE ACTUATOR SHALL BE PROVIDED AND MOUNTED BY THE TEMPERATURE CONTROLS CONTRACTOR.

8. THE TOTAL STATIC PRESSURE FOR THE FANS SHALL INCLUDE THE FOLLOWING. (A) LISTED ESP, (B) DESIGN FILTER ALLOWANCE, (C) PRESSURE DROPS THROUGH UNIT CONFIGURATION INCLUDING (COILS, DAMPERS, FILTERS, ETC.

9. PROVIDE HIGH EFFICIENCY INVERTER DUTY MOTORS.

10. UNIT DESIGN FAN HORSEPOWER, DIMENSIONS AND WEIGHT ARE LISTED IN THE SCHEDULE. IT IS THE CONTRACTOR’S AND ALTERNATE MANUFACTURER’S RESPONSIBILITY TO ENSURE THAT THE HORSEPOWER, FIT AND ALL CLEARANCES ARE MAINTAINED SHOULD EQUIPMENT OTHER THAN SPECIFIED BE FURNISHED.

11. COORDINATE SHIPPING SPLITS AS REQUIRED FOR INSTALLATION.

12. VFD’S ARE TO BE FIELD INSTALLED AND MOUNTED TO THE WALL WITH IN THE SAME MECHANICAL ROOM.

13. THE MAXIMUM MOTOR SIZE SHALL BE 10 HP. PROVIDE MULTIPLE PLENUM FANS WHERE REQUIRED TO MEET THIS REQUIREMENT. VERTICAL BACK DRAFT DAMPERS SHALL BE PROVIDED ON WHERE DUAL FANS ARE REQUIRED.

14. PROVIDE UNIT WITH PERMANENT AIR FILTER FRAMES FOR 2" THROW AWAY MERV 8 MEDIA.

15. UNIT SHALL BE PROVIDED WITH FOUR (4) COMPLETE MEDIA CHANGES.

16. PROVIDE RELIEF FAN WITH INTEGRAL PIZEO RING AND TRANSDUCER FOR AIRFLOW MEASUREMENT FOR ALL AHUS WITH RETURN/RELIEF FAN(S).

TEMPORARY PACKAGED DX AIR HANDLING UNIT SCHEDULE

MARK

BASIS OF DESIGN

SERVICE TYPE LOCATION

NOMINAL

SIZE

LxWxH (IN)

WEIGHT

(LBS)

SUPPLY AIR FAN

REMARKS

MANUF. MODEL CFM TYPE

NO. OF

FANS - RPM

DRIVE

MAX.S.P

(IN WG)

MOTOR

HP

TAHU-1A TRANE TEH600A4 TEMP AHU PACKAGED DX GRADE 232x90x77 5044 18000 FC 1 BELT 5.0 20

TAHU-1B TRANE TEH600A4 TEMP AHU PACKAGED DX GRADE 232x90x77 5044 18000 FC 1 BELT 5.0 20

TAHU-2A TRANE TEH600A4 TEMP AHU PACKAGED DX GRADE 232x90x77 5044 18000 FC 1 BELT 5.0 20

TAHU-2B TRANE TEH600A4 TEMP AHU PACKAGED DX GRADE 232x90x77 5044 18000 FC 1 BELT 5.0 20

TEMPORARY PACKAGED DX AIR HANDLING UNIT SCHEDULE - CONT.

MARK

DX COOLING COIL RETURN FAN HEATING SECTION ELECTRICAL

TOTAL CAP.

(MBH)

SENS. CAP.

(MBH)

EAT

(DB / WB)

LAT

(DB / WB)

EER CFM

ESP (IN

W.C.)

MOTOR

HP

TYPE KW VOLTS PHASE HZ MCA MOCP

TAHU-1A 540 410 78/65 55/52 10.5 14350 5.0 20 ELECTRIC 54/54, 108 TOTAL 480 3 60 186 225

TAHU-1B 540 410 78/65 55/52 10.5 14350 5.0 20 ELECTRIC 54/54, 108 TOTAL 480 3 60 186 225

TAHU-2A 540 410 78/65 55/52 10.5 14350 5.0 20 ELECTRIC 54/54, 108 TOTAL 480 3 60 186 225

TAHU-2B 540 410 78/65 55/52 10.5 14350 5.0 20 ELECTRIC 54/54, 108 TOTAL 480 3 60 186 225

REMARKS:.

1. ENTIRE UNIT SHALL BE DOUBLE WALL CONSTRUCTION.

2. PROVIDE WITH STAINLESS STEEL IAQ CONDENSATE DRAIN PAN. ENTIRE PAN SHALL BE PITCHED TO OUTLET.

3. PROVIDE WITH HIGH-EFFICIENCY MOTORS .

4. PROVIDE UNIT WITH TWO COMPRESSORS WITH COMPRESSOR BLANKETS OR MUFFLERS, AND 3 STAGES OF COOLING .

5. REFER TO SPECIFICATIONS FOR FILTER REQUIREMENTS.

6. PROVIDE DISCONNECTS FOR ALL FAN MOTORS.

7. PROVIDE WITH ECONOMIZER AND BAROMETRIC RELIEF DAMPER.

8. PROVIDE UNIT WITH INTEGRAL NON-FUSED DISCONNECT.

9. PROVIDE WITH LOW AMBIENT COOLING.

10. TIE UNITS INTO EXISTING FIRE ALARM SYSTEM.

AIR HANDLING UNIT SCHEDULE

MARK

BASIS OF DESIGN

SERVICE LOCATION

DIMENSIONS (IN)

WEIGHT

(LBS.)

SUPPLY AIR FAN RETURN AIR FAN CHILLED WATER COOLING COIL HOT WATER HEATING COIL ELECTRICAL DATA

REMARKS

MANUF. MODEL LENGTH WIDTH HEIGHT

AIRFLOW

(CFM)

E.S.P.

(IN WG)

DRIVE

TYPE

QTY

MOTOR

HP

AIRFLOW

(CFM)

E.S.P.

(IN WG)

DRIVE

TYPE

QTY.

MOTOR

HP

CAPACITY (MBH) EAT (°F) LAT (°F) CAPACITY

(MBH)

EAT

DB (°F)

LAT

DB (°F)

VOLTAGE

(V)

PHASE

(Ph)

FAN FLA (A)

TOTAL SENSIBLE DB WB DB WB SUPPLY RETURN

S201 AHU-1 TRANE CSAA066 S201

MECHANICAL

ROOM

100 141 93 16510 35,000 4.88 DIRECT 4 15 35,000 1.46 DIRECT 4 7.5 1,261.2 1,000.1 78 64 52 52 941.8 45 70 460 3 18.1 9.8

S202 AHU-1 TRANE CSAA066 S202

MECHANICAL

ROOM

100 141 93 16510 35,000 4.88 DIRCET 4 15 35,000 1.46 DIRCET 4 7.5 1,261.2 1,000.1 78 64 52 52 941.8 45 70 460 3 18.1 9.8

WATER COOLED CHILLER SCHEDULE

MARK TYPE

BASIS OF DESIGN

SERVICE

DIMENSIONS (IN)

WEIGHT

(LBS)

FLUID

TYPE

COMPRESSOR EVAPORATOR CONDENSER

NO. OF

MODULES

REFRIGERANT

CHARGE PER

MODULE

REMARKS

MANUF. MODEL # LENGTH WIDTH HEIGHT

COOLING

CAPACITY (MBH)

VOLTAGE PHASE MCA MOCP STARTER EER EWT (°F) LWT (°F) GPM

FLUID PD

(FT HD)

FOULING

FACTOR

EWT (°F) LWT (°F) GPM

FLUID PD

(FT HD)

FOULING

FACTOR

CH-1 MODULAR TRANE MWC 3x80TON CHILLED WATER 102 66 78 7800.00 lbf WATER 2,880.0 460 3 421 500 17.26 56 44 481 6.85 0.0001 80 90 702 11.30 0.00025 3 52 LBS

REMARKS:.

1. UNIT SHALL HAVE TWO COMPRESSORS (MINIMUM) PER MODULE.

2. PROVIDE FOUR-PIPE REVERSIBLE UNIT.

3. ALL SCHEDULED VALUES CORRESPOND TO THE UNIT AS A WHOLE, MADE UP OF MULTIPLE MODULES. VALVES PER MODULE ARE SPECIFICALLY NOTED.

4. REFRIGERANT SHALL BE R-454B.

5. PROVIDE COMPRESSORS WITH ACOUSTICAL WRAP.

6. OTHER ACCEPTABLE MANUFACTURERS: CLIMATE MASTER, FHP OR WATER FURNACE.

7. PROVIDE WITH SINGLE POINT POWER CONNECTION.

PLATE & FRAME HEAT EXCHANGER SCHEDULE

MARK

BASIS OF DESIGN

TYPE SERVICE

DIMENSIONS (IN) TOTAL HEAT

TRANSFER

(MBH)

EVAPORATOR SIDE COLD SIDE (CONDENSER)

REMARKS

MANUF. MODEL # LENGTH WIDTH HEIGHT GPM

MAX P.D.

(FT)

EWT

(°F)

LWT

(°F)

GPM

MAX P.D.

(FT)

EWT

(°F)

LWT

(°F)

HX-1 BELL & GOSSETT AP110 WATER CONDENSER 79 26 111 549.0 600 2.00 92 80 1,000 5.00 78 85

REMARKS:.

1. PROVIDE SINGLE PASS WITH STAINLESS STEEL PLATES AND FLANGED PIPING CONNECTIONS.

2. OTHER ACCEPTABLE MANUFACTURERS: ALFA LAVAL, ARMSTRONG & TACO.

AIR SEPARATOR SCHEDULE

MARK MANUFACTURER MODEL # SERVICE

WATER

FLOW RATE

(GPM)

WATER

PRESSURE DROP

(FT HD)

REMARKS

AS-3 BELL & GOSSETT RL-6 CH-1 1,000 13.7

EXISTING VAV TERMINAL UNIT SCHEDULE - CONTROLS REPLACEMENT

MARK BOX TYPE

INLET

SIZE

AIRFLOW (CFM) HOT WATER COIL

REMARKS

MAX. MIN. CFM GPM CAPACITY (MBH)

VAV 1A-4 COOLING ONLY 5"ø 270 40

VAV 1A-9 COOLING ONLY 5"ø 260 30

VAV 1A-13 COOLING ONLY 6"ø 330 40

VAV 3A-3 COOLING ONLY 10"ø 830 100

VAV 3A-4 COOLING ONLY 10"ø 962 120

VAV 3B-8 FAN POWERED BOX 10"ø 938 120 700 1 15.2 1/4 HP - 277V

VAV 3B-10 FAN POWERED BOX 12"ø 1,558 190 1,170 1.5 24.6 1/2 HP - 277V

VAV 3B-16 FAN POWERED BOX 6"ø 352 40 260 0.5 5.9 1/6 HP - 277V

VAV 3A-18 COOLING ONLY 6"ø 300 60

VAV 3B-21 FAN POWERED BOX 6"ø 376 50 280 0.5 7.1 1/6 HP - 277V

VAV 3B-22 FAN POWERED BOX 12"ø 1,368 170 1,030 1.5 22.2 1/2 HP - 277V

VAV 3C-24 COOLING ONLY 4"ø 130 65

VAV 3B-26 FAN POWERED BOX 10"ø 1,028 130 770 1 17.5 1/4 HP - 277V

REFRIGERANT CALCULATIONS

R454B

EFFECTIVE

VOLUME

(V )

REFRIGERANT

CONCENTRATION

LIMIT

(RCL)

OCCUPANCY

ADJUSTMENT

FACTOR

(F )

EFFECTIVE

DISPERSAL

VOLUME CHARGE

(EDVC)

REFRIGERANT

eff

29,520 CF 3.1 LBS/1000 CF 1.0 91.5 LBS

RCL OF R454B = 3.1 LBS/1,000 CF

F BUSINESS OCCUPANCY: 1.0

EDVC = Veff x RCL x Focc

EDVC = 29,517 CF x 3.1 LBS/1,000 SF x 1.0

91.5 LBS of Refrigerant

52 LBS < 91.5 LBS

occ

LOCATION

180 MECH

REMARKS:

1. SEE UNIT LOCATIONS ON SHEET M403.

MAXIMUM

CHARGE OF

SINGLE

CIRCUIT

52 LBS

occ

OUTSIDE AIR TABLE FOR AHUS

AHU-1 S201

NON-ECONOMIZER

MAXIMUM CFM

NOTESUNIT

11,500 SEE M502 CONTROLS

MINIMUM

OUTSIDE

AIR CFM

6,300

AHU-1 S202 9,5004,500 SEE M502 CONTROLS

TEMPORARY CHILLER SCHEDULE

MARK TYPE SERVICE

COMPRESSOR

EVAPOR

ATOR

REMARKS

COOLING

CAPACITY (TONS)

VOLTAGE PHASE GPM

TCH-3 AIR-COOLED BUILDING S203 40.0 208 3 80

REMARKS:.

1. PROVIDE WITH 150kVA- 208V/480V STEP-UP TRANSFORMER CAM CONNECTIONS, (2)

4"x100FT HOSE BOX, 2/0 x 100FT CABLE BOX, 2/0 x 50FT CABLE BOX, AND INTEGRAL PUMP.

# Date Description

1 10/10/2025 100% DD SET

2 12/12/2025 100% CD SET

3 03/23/2026 100% Construction Documents

4 07/21/2026 BID DOCUMENTS

WALL RATING LEGEND

NON-RATED PARTITION

1 HR. RATED PARTITION TO DECK

2 HR. RATED PARTITION TO DECK

M111

M112

M113

M114

M115

M116

M121

M122

M123

M124

8801 J.M. Keynes Drive, Suite 240 Charlotte, NC 28262

T: 704.376.7072

N

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KEYPLAN

ISSUE / REVISION

PROJECT NUMBER

SHEET TITLE

SHEET NUMBER

S

J

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A

RUCL.

31478

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M110

ROWAN-CABARRUS COMMUNITY

COLLEGE

1531 TRINITY CHURCH RD, CONCORD, NC,

28027

ROWAN-CABARRUS

COMMUNITY COLLEGE

1531 TRINITY CHURCH RD,

CONCORD, NC, 28027

8/10/2026

CMTA: 223.081.00

S201 OVERALL PLAN

SCO: 23-26928-01B

02' 2' 4' 8'

3/16" = 1'-0"M110

1 S201 OVERALL PLAN

# Date Description

1 10/10/2025 100% DD SET

2 12/12/2025 100% CD SET

3 03/23/2026 100% Construction Documents

4 07/21/2026 BID DOCUMENTS

6 08/10/2026 ADDENDUM 2

THIS IS A PHASED PROJECT TO BE PERFORMED IN OCCUPIED BUILDINGS AND MAY

REQUIRE OVERTIME AND WEEKEND WORK TO ACCELERATE COMPLETION WHILE

MINIMIZING DISRUPTION TO ONGOING OPERATIONS AND BUILDING OCCUPANTS. A

MINIMUM 72-HOUR ADVANCE NOTICE WITH APPROVAL IS REQUIRED FOR WEEKEND

OR OVERTIME SHIFTS. ANY PLANNED POWER, WATER, OR HVAC SHUTDOWNS

SHALL BE COORDINATED WITH THE OWNER AND SCHEDULED DURING APPROVED

NIGHT OR WEEKEND WINDOWS TO AVOID IMPACTS TO BUILDING OCCUPANTS.

GENERAL NOTE:

S

S

S

D

E

M212

54x28 RA(EX)54x28 RA

(EX)FD

(EX)FD

(EX)12x6 EA

(EX) AHU-1

(E X

H

W R

(E X

H

W

S (EX)AC-1

(EX)WH-1

(EX) UH-1

(EX) UH-2

(EX)54x28 RA (EX)54x28 RA

(EX)FD (EX)FD

(EX)48x24 MPSA

(EX)64x18 MPSA

(EX)48x24 MPSA

(EX)FD

(E X

)4 x M

P S

A

(EX)FD

(EX)FD

(E X

)4 x R

A

(EX) 4" CHWR (EX) 4" CHWS

(EX) HWR

(E X

H

W R

120x40 RA

54x28 RA

42x42 RA

"ø

R A

24"ø RA(4)

140x34 MPSA

20"ø MPSA

(4)

20"ø MPSA

"ø

R A

20"ø MPSA

202 LEVEL 1

0' - 0"

202 LEVEL 2

16' - 0"

28x54 RA

28x54 RA 42x42 RA

(EX)28x54 RA

(EX)FD

(EX)28x54 RA

(EX)48x24 MPSA (EX)18x64 MPSA

(EX)6x12 EA (EX)F-4

(4)

(EX)28x54 RA

(EX)FD

(EX)FD

(EX) AHU-1

1/2" HWR

(EX) UH-1

x M

P S

A

20"ø

24"ø RA

24"ø RA

20"ø MPSA

20"ø MPSA

20"ø MPSA

20"ø MPSA

WALL RATING LEGEND

NON-RATED PARTITION

1 HR. RATED PARTITION TO DECK

2 HR. RATED PARTITION TO DECK

N

8801 J.M. Keynes Drive, Suite 240 Charlotte, NC 28262

T: 704.376.7072

F

IL

E N A M E

P L O T

T

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E

PROJECT

CLIENT

CONSULANTS

REGISTRATION

KEYPLAN

ISSUE / REVISION

PROJECT NUMBER

SHEET TITLE

SHEET NUMBER

S

J

E M

A

RUCL.

31478

IR

E

SEAL

HTRO

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S202

C

U se rs \D

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M212

ROWAN-CABARRUS COMMUNITY

COLLEGE

1531 TRINITY CHURCH RD, CONCORD, NC,

28027

ROWAN-CABARRUS

COMMUNITY COLLEGE

1531 TRINITY CHURCH RD,

CONCORD, NC, 28027

8/10/2026

CMTA: 223.081.00

S202 MECHANICAL ROOM

TEMPORARY HVAC PLAN AND

SECTION

SCO: 23-26928-01B

3/8" = 1'-0"M212

1 S202 MECHANICAL ROOM TEMPORARY HVAC PLAN

01' 1' 2' 4'

3/8" = 1'-0"M212

2 S202 MECHANICAL ROOM TEMPORARY HVAC SECTION

01' 1' 2' 4'

MECHANICAL KEYNOTES

46 CONNECT TEMPORARY 20" DIAMETER MPSA DUCTWORK TO EXISTING 64x18 MPSA AND 48x24 MPSA VIA TEMPORARY 140x34 MPSA PLENUM AND MPSA CONNECTION DUCTWORK

AS SHOWN.

47 CONNECT TEMPORARY 24" DIAMETER RA DUCTWORK TO EXISTING 54x28 RA AND 48x28 RA VIA TEMPORARY 120x40 RA PLENUM AND RA CONNECTION DUCTWORK AS SHOWN.

48 RE-INSTALL EXISTING DUCT MOUNTED SMOKE DETECTOR IN NEW RETURN DUCT AND TIE

IN TO FIRE ALARM SYSTEM.

THE INTENT IS TO PROVIDE HEATING/COOLING TO BUILDING S202 USING

TEMPORARY AHUs AND DUCTWORK IN ORDER TO REMOVE THE OLD UNIT

SECTIONS AND INSTALL THE NEW SECTIONS. CONTRUCT AND INSTALL AS MUCH

DUCTWORK AND PIPING PRIOR TO SHUTDOWNS OF UNIT TO MINIMIZE DOWNTIME.

COORDINATE SHUTDOWNS OF UNIT WITH THE RCCC REPRESENTATIVE.

INSTALL TEMPORARY UNITS AND ROUTE AS MUCH TEMPORARY DUCTWORK TO

EXISTING AREAWAY AND INSIDE MECHANICAL ROOM TO AHU-1 CONNECTION

POINTS AS POSSIBLE. PREPARE TEMPORARY ACOUSTICAL PLENUM CONNECTIONS

TO EXISTING BUILDING SUPPLY AND RETURN DUCTWORK.

REMOVE EXISTING RELIEF/EXHAUST LOUVER AND SET ASIDE. DEMOLISH EXISTING

SUPPLY AND RETURN AIR CONNECTIONS TO BUILDING DUCTWORK. REMOVE AS

MUCH OF SUPPLY AND RETURN AIR PLNEUMS ON AHU-1 AS REQUIRED FOR

CONNECTION OF TEMPORARY DUCTWORK.

INSTALL TEMPORARY SUPPLY AND RETURN PLENUMS ON EXISTING BUILDING

SUPPLY AND RETURN DUCTWORK AND CONNECT TEMPORARY DUCTS. START AND

BALANCE TEMPORARY UNIT TO SERVE ENTIRE BUILDING.

REMOVE EXISTING OUTSIDE AIR LOUVER AND OUTSIDE AIR PLENUM AS REQUIRED

AND SET ASIDE LOUVER. DEMOLISH REMAINING AHU-1 SECTIONS AND ASSOCIATED

DUCTWORK, PIPING, AND ELECTRICAL CONNECTIONS.

INSTALL NEW AHU-1 SECTIONS, CONTROLS, AND ALL ASSOCIATED DUCTWORK AND

PIPING AS POSSIBLE. PREPARE CONNECTIONS TO EXISTING BUILDING DUCTWORK

AND PIPING.

DEMOLISH TEMPORARY CONNECTIONS, CONNECT AHU-1 TO EXISTING DUCTWORK

AND START NEW AHU-1 TO SERVE THE BUILDING.

REMOVE ALL REMAINING TEMPORARY DUCTWORK AND UNIT..

REINSTALL LOUVERS AND ASSOCIATED PLENUMS, REBUILD AND PATCH EXISTING

WALLS AS REQUIRED, AND FINALIZE BALANCING OF NEW AHU-1.

SCHEDULING CONSIDERATIONS:

# Date Description

1 10/10/2025 100% DD SET

2 12/12/2025 100% CD SET

3 03/23/2026 100% Construction Documents

4 07/21/2026 BID DOCUMENTS

(EX) AHU-1

1. PROVIDE WET TAP FOR EMERGENCY

CONNECTION TO TEMPORARY 2-1/2" CHWS/R

PIPING FROM TEMPORARY CHILLER, TCH-3.

SEAL OPENING WITH NON-SHRINK GROUT

AND PROVIDE BRUSHED STAINLESS STEEL

WALL FLANGE AROUND EACH PIPE.

THE INTENT IS TO QUICKLY PROVIDE COOLING

TO BUILDING S203 IF CHILLERS GO DOWN

DURING CONSTRUCTION.

2 1/2" CHWR 2 1/2" CHWS

BLIND FLANGE

(EX) AHU-1

WALL RATING LEGEND

NON-RATED PARTITION

1 HR. RATED PARTITION TO DECK

2 HR. RATED PARTITION TO DECK

N

8801 J.M. Keynes Drive, Suite 240 Charlotte, NC 28262

T: 704.376.7072

F

IL

E N A M E

P L O T

T

IM

E

PROJECT

CLIENT

CONSULANTS

REGISTRATION

KEYPLAN

ISSUE / REVISION

PROJECT NUMBER

SHEET TITLE

SHEET NUMBER

S

J

E M

A

RUCL.

31478

IR

E

SEAL

HTRO

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S203

C

U se rs \D

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M e ch v d a n M

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M

M311

ROWAN-CABARRUS COMMUNITY

COLLEGE

1531 TRINITY CHURCH RD, CONCORD, NC,

28027

ROWAN-CABARRUS

COMMUNITY COLLEGE

1531 TRINITY CHURCH RD,

CONCORD, NC, 28027

8/10/2026

CMTA: 223.081.00

S203 MECHANICAL ROOM FLOOR

PLANS

SCO: 23-26928-01B

1/4" = 1'-0"M311

1 S203 MECHANICAL ROOM TEMPORARY NEW WORK PLAN

1/4" = 1'-0"M311

2 S203 MECHANICAL ROOM TEMPORARY DEMOLITION PLAN

2' 0 2' 4' 8'

2' 0 2' 4' 8'

# Date Description

1 10/10/2025 100% DD SET

2 12/12/2025 100% CD SET

3 03/23/2026 100% Construction Documents

4 07/21/2026 BID DOCUMENTS