TCC-VB 260-B4260-112-c (M26TC127) Project Drawings 2026-09-25.pdf

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NOTE:

1. THE CONTRACTOR SHALL COMPLY WITH THE 2021 VIRGINIA STATEWIDE FIRE PREVENTION CODE

AND NFPA 70. THE CONTRACTOR SHALL MAINTAIN A COPY OF EACH DOCUMENT ONSITE

THROUGHOUT THE CONSTRUCTION PROCESS. CONTRACTOR SHALL POST A FIRE WATCH DURING

ANY WELDING, BRAZING, AND OTHER HOT WORK. CONTRACTOR SHALL MAINTAIN THE SPRINKLER

AND THE FIRE ALARM TO BE ACTIVE AT ALL TIMES DURING CONSTRUCTION.

TIDEWATER COMMUNITY COLLEGE -

VIRGINIA BEACH CAMPUS

VIRGINIA COMMUNITY COLLEGE SYSTEM

TITLESHEET NO.

TITLE SHEETT001

STATE PROJECT NO: 260-B4260-112 (M26TC127)

SEPTEMBER 25, 2026

MJT# 24-110

INDEX OF DRAWINGS

AREA MAP VICINITY MAP PLAN

NORTH

GENERAL CODE DATA:VECC COMPLIANCE STATEMENT

IN ACCORD WITH THE VIRGINIA ENERGY CONSERVATION CODE (VECC), THE BUILDING

SHALL COMPLY WITH ASHRAE 90.1-2019 SECTIONS 5, 6, 7, 8, 9, & 10. SECTION 5

BUILDING ENVELOPE WILL BE VIA SECTION 5.5 - PRESCRIPTIVE BUILDING ENVELOPE

OPTION. SECTION 6 COMPLIANCE WILL BE VIA SECTIONS 6.4 - MANDATORY

PROVISIONS AND 6.5 - PRESCRIPTIVE PATH.

LEAD MATERIALS DISCLOSURE STATEMENT

AN INSPECTION TO IDENTIFY LEAD CONTAINING OR COATED BUILDING COMPONENTS

HAS NOT BEEN CONDUCTED BECAUSE THE BUILDING WAS CONSTRUCTED AFTER

JANUARY 1, 1985 AND THE OWNER HAS NO KNOWLEDGE OF LEAD CONTAINING OR

COATED BUILDING COMPONENTS IN THE BUILDING. IT IS THE CONTRACTOR'S

RESPONSIBILITY TO COMPLY WITH ALL VIRGINIA OCCUPATIONAL SAFETY AND

HEALTH (VOSH) REGULATIONS AS THEY PERTAIN TO EMPLOYEE EXPOSURES TO

LEAD. ALL LEAD AND LEAD-COATED BUILDING COMPONENTS SHALL BE RECYCLED

TO THE EXTENT POSSIBLE.

ASBESTOS DISCLOSURE STATEMENT

AN ASBESTOS INSPECTION WAS NOT PERFORMED BECAUSE ALL PORTIONS OF THE

EXISTING BUILDING THAT MAY BE AFFECTED BY THE WORK WERE ORIGINALLY

CONSTRUCTED AFTER JANUARY 1, 1985.

HPBA COMPLIANCE STATEMENT

IN ACCORD WITH THE HIGH PERFORMANCE BUILDINGS ACT, THE BUILDING IS

EXEMPT FROM COMPLIANCE BECAUSE THE COST OF THE RENOVATIONS DOES NOT

EXCEED 50% OF THE VALUE OF THE BUILDING.

M001 GENERAL NOTES, LEGEND, ABBREVIATIONS, AND SCHEDULES

APPLICABLE CODES: VIRGINIA UNIFORM STATEWIDE BUILDING CODE (VUSBC) 2021 EDITION,

EFFECTIVE JANUARY 18, 2024

VIRGINIA EXISTING BUILDING CODE (VEBC), 2021 EDITION: LEVEL 2 ALTERATION

VIRGINIA CONSTRUCTION CODE (VCC), 2021 - VUSBC PART 1

VIRGINIA ENERGY CONSERVATION CODE, 2021

VIRGINIA MECHANICAL CODE, 2021

VIRGINIA PLUMBING CODE, 2021

NATIONAL ELECTRICAL CODE - NFPA 70, 2020

VIRGINIA STATEWIDE FIRE PREVENTION CODE, 2021

INTERNATIONAL FIRE CODE, 2021

CONSTRUCTION AND PROFESSIONAL SERVICES MANUAL (CPSM) 2026 REV 0 DATED JULY 31, 2026

BUILDING PURPOSE/OCCUPANCY: EDUCATIONAL OCCUPANCY FOR STUDENTS ABOVE 12TH GRADE

USE GROUP: GROUP B - BUSINESS

TYPE OF CONSTRUCTION: VCC TYPE II-B - NONCOMBUSTIBLE/UNPROTECTED

ORIGINAL CONSTRUCTION YEAR: COMPLETED IN 2002, UNDER THE VIRGINIA UNIFORM STATEWIDE

BUILDING CODE (VUSBC) 1996 EDITION, EFFECTIVE AUGUST 20, 1997.

FIRE ALARM SYSTEM: EXISTING

FIRE SUPPRESSION SYSTEM: AUTOMATIC FIRE SUPPRESSION SYSTEM (SPRINKLER) PROVIDED

THROUGHOUT BUILDING

NO PROPOSED CHANGES IN OCCUPANCY LOADS OR MEANS OF EGRESS

BUILDING AREA: APPROX. 132,681 SF

MD101 ENLARGED MECHANICAL ROOM AND YARD PLAN - DEMOLITION

M101 ENLARGED MECHANICAL ROOM AND YARD PLAN - NEW WORK

E001 GENERAL NOTES, LEGEND AND ABBREVIATIONS

ED101 ENLARGED MECHANICAL ROOM AND YARD PLAN - ELECTRICAL - DEMOLITION

PROJECT LOCATION

E101 ENLARGED MECHANICAL ROOM AND YARD PLAN - ELECTRICAL - NEW WORK

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

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1700 COLLEGE CRES,

VIRGINIA BEACH, VA 23453

VIRGINIA COMMUNITY COLLEGE SYSTEM

PM: SHELLEY BAINS, VCCO

CAPITAL OUTLAY PROGRAM MANAGER

ARBORETUM III, 300 ARBORETUM PLACE,

2ND FLOOR, SUITE 390

RICHMOND, VA 23236

(804) 683-5777

M201 CHILLED AND CONDENSER WATER PIPING DIAGRAMS - DEMOLITION

M301 MECHANICAL DETAILS

M401 AUTOMATIC TEMPERATURE CONTROLS

GENERAL SITE PLANG001

M402 AUTOMATIC TEMPERATURE CONTROLS

GENERAL NOTES, CHILLER TOWER PAD PLAN, AND SECTIONS101

M202 CHILLED AND CONDENSER WATER PIPING DIAGRAMS - NEW WORK

DIG NOTICE

CONTACT VIRGINIA 811 AT 811, 1-800-552-7001, OR https://www.va811.com NO LESS

THAN 72 HOURS PRIOR TO EXCAVATION AND DO NOT DISTURB THE SOIL UNTIL DIG

TICKET HAS BEEN PROCESSED.

DELEGATED DESIGN

THIS PROJECT DOES NOT UTILIZE ANY SYSTEMS OR PRODUCTS THAT FALL UNDER

THE DEB REQUIREMENTS FOR DELEGATED DESIGN.

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CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

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GENERAL SITE PLAN

NOT TO SCALE

REFER TO THE PROJECT MANUAL SPECIFICATION

SECTION 011400 "CONTRACTOR'S USE OF THE

PREMISES" FOR ADMINISTRATIVE AND PROCEDURAL

REQUIREMENTS WHILE WORKING ON COLLEGE

PREMISES. REFER TO OTHER PROJECT MANUAL

SPECIFICATION SECTIONS FOR ADDITIONAL

REQUIREMENTS.

RECOMMENDED CRANE LOCATION. CONTRACTOR

SHALL COORDINATE ACTUAL CRANE LOCATION WITH

WORK REQUIRED. CONTRACTOR SHALL BE

RESPONSIBLE TO ALL DAMAGE TO SOD AND ASPHALT,

AND REPAIR SITE TO PRE-CONSTRUCTION CONDITIONS.

SITE PLAN NOTES (THIS SHEET ONLY)

DESCRIPTIONNO.

ANY POWER OUTAGES AFFECTING THIS AREA SHALL

ONLY TAKE PLACE DURING WEEKEND HOURS AND

MUST BE COORDINATED WITH OWNER AT LEAST 7 DAYS

PRIOR TO SCHEDULED OUTAGE.

CONTRACTOR SHALL USE AREA AS INDICATED FOR

PARKING AND STAGING OF EQUIPMENT/MATERIALS. ALL

OTHER PARKING AREAS SHALL NOT BE USED WITHOUT

OWNER'S PRIOR APPROVAL.

SITE PLAN NOTES (THIS SHEET ONLY)

DESCRIPTIONNO.

3 (TYP.)

1 4 6

5 7 2

3 (TYP.)

3 (TYP.)

CONTRACTOR SHALL BE GRANTED ACCESS TO THE

LIMITS OF CONSTRUCTION MONDAY THROUGH FRIDAY

7:00 AM TO 4:00 PM DURING THE CONSTRUCTION

PERIOD. ACCESS TO THE BUILDING AFTER NORMAL

WORKING HOURS SHALL BE ALLOWED WITH OWNER'S

(VCCS) PRIOR APPROVAL AND COORDINATION.

STAFF PARKING, NO CONTRACTOR PARKING

PERMITTED OUTSIDE DESIGNATED AREA.

KEEP DRIVEWAYS AND ENTRANCES SERVING THE

PREMISES CLEAR AND AVAILABLE TO THE OWNER, THE

OWNER'S EMPLOYEES, INSTRUCTORS, STAFF, AND

EMERGENCY VEHICLES AT ALL TIMES.

SITE PLAN NOTES (THIS SHEET ONLY)

DESCRIPTIONNO.

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DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

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1. WHERE EQUIPMENT IS INDICATED TO BE REMOVED, IT SHALL MEAN COMPLETE REMOVAL

OF EQUIPMENT, INCLUDING ANCHORS, BRACKETS, CONTROLS AND INCIDENTAL ITEMS

CONNECTED OR FASTENED TO EQUIPMENT. OWNER MAINTAINS THE OWNERSHIP OF ALL

ITEMS TAGGED OR IDENTIFIED.

2. WHERE PIPING IS INDICATED TO BE REMOVED, IT SHALL MEAN COMPLETE REMOVAL OF

PIPING, INCLUDING VALVES, FITTINGS, INSULATION, SUPPORTS, HANGERS, BRACKETS,

CONTROLS AND INCIDENTAL ITEMS CONNECTED OR FASTENED TO THE PIPING. PIPING IS

DIAGRAMMATIC AND INDICATES THE GENERAL EXTENT OF WORK. NO ATTEMPT IS MADE

TO SHOW EVERY ELL, TEE, OFFSET, FITTING AND VALVE. REMOVE PIPING AS INDICATED

AND SPECIFIED.

3. CONTRACTOR SHALL RECLAIM AND DISPOSE OF ALL REFRIGERANT IN ACCORDANCE

WITH ALL STATE AND LOCAL CODES PRIOR TO REMOVING THE EXISTING UNIT. OWNER

SHALL MAINTAIN FIRST RIGHT OF REFUSAL FOR ALL RECLAIMED REFRIGERANT PRIOR

TO DISPOSAL BY CONTRACTOR.

GENERAL DEMOLITION NOTES

1. CONTRACTOR SHALL VISIT JOB SITE TO DETERMINE EXTENT OF WORK INVOLVED PRIOR

TO BIDDING THE PROJECT.

2. THE MECHANICAL SYSTEM HAS BEEN DESIGNED IN ACCORDANCE WITH THE 2021

VIRGINIA UNIFORM STATEWIDE BUILDING CODE.

3. COORDINATE LOCATION OF ALL DUCTWORK, EXHAUST FANS, THERMOSTATS AND

OTHER WALL MOUNTED EQUIPMENT WITH LIGHT FIXTURES, SPRINKLER SYSTEMS AND

ACCESSORIES INSTALLED BY OTHER TRADES SO AS TO PRESENT A NEAT AND

ATTRACTIVE INSTALLATION.

4. PIPING ARRANGEMENTS ARE DIAGRAMMATIC.

5. ARRANGE PIPING AS REQUIRED TO CLEAR STRUCTURE, CONDUIT, LIGHTS, ETC.,

ALLOWING SPACE FOR HANGERS, INSULATION, ETC.

6. MAINTAIN PROPER CLEARANCES PER ELECTRICAL CODE ON ALL EQUIPMENT.

COORDINATE WITH ALL TRADES TO ENSURE CLEARANCES ARE NOT OBSTRUCTED.

7. INSTALL ALL WALL MOUNTED NON-ADJUSTABLE SENSORS AT 5'-0" FROM FINISHED

FLOOR TO TOP OF SENSOR. ADJUSTABLE DEVICES SHALL BE INSTALLED AT 4'-0" FROM

FINISHED FLOOR TO TOP OF SENSOR.

8. CONTRACTOR SHALL ONLY USE DESIGNATED AREAS WITHIN THE EQUIPMENT FOR

PENETRATIONS OF ELECTRICAL CONDUITS AND CONTROL CONDUITS. THESE

PENETRATIONS MUST BE WEATHERTIGHT. IF A CONTRACTOR PENETRATES ANY AREA IN

THE EQUIPMENT THAT IS NOT DESIGNATED BY THE MANUFACTURER FOR

PENETRATIONS, THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL REPAIRS TO THE

EQUIPMENT, TO ENSURE IT IS WEATHERTIGHT. IF EQUIPMENT CANNOT BE MADE

WEATHERTIGHT, THE CONTRACTOR SHALL BE REQUIRED TO REPLACE EQUIPMENT AT

HIS OWN EXPENSE.

9. PROVIDE NEMA 4XSS STAINLESS STEEL ENCLOSURES FOR ALL EXTERIOR FIELD

INSTALLED CONTROLS, ACCESSORIES AND ELECTRICAL COMPONENTS WHETHER

INDICATED OR NOT.

GENERAL NOTES

ABBREVIATIONS

% PERCENT

ø DIAMETER

A AMP

ADS AIR/DIRT SEPARATOR

B-x (EXISTING) BOILER DESIGNATION

C-x CHILLER DESIGNATION

CF CHEMICAL FEEDER

CFM CUBIC FEET PER MINUTE

CHWR CHILLED WATER RETURN

CHWS CHILLED WATER SUPPLY

CT-x COOLING TOWER DESIGNATION

CW DOMESTIC COLD WATER

CWR CONDENSER WATER RETURN

CWS CONDENSER WATER SUPPLY

DDC DIRECT DIGITAL CONTROL

DI-x (EXISTING) DRAFT INDUCER DESIGNATION

DN DOWN

EAT ENTERING AIR TEMPERATURE

EC ELECTRONICALLY COMMUTATED

EF-x EXHAUST FAN DESIGNATION

ESP EXTERNAL STATIC PRESSURE

ET EXPANSION TANK

EWT ENTERING WATER TEMPERATURE

°F DEGREES FAHRENHEIT

FD FLOOR DRAIN

FPM FEET PER MINUTE

FT FEET

GPM GALLONS PER MINUTE

H HEIGHT

HP HORSEPOWER

HTC-x HEAT TRACE CONTROLLER DESIGNATION

HWR HOT WATER RETURN

HWS HOT WATER SUPPLY

IN INCH/INCHES

IPLV INTEGRATED PART LOAD VALUE

kA KILO AMPS

KW KILOWATTS

L LENGTH

LBS POUNDS

LF LINEAR FEET

LWT LEAVING WATER TEMPERATURE

MAX MAXIMUM

MCA MINIMUM CIRCUIT AMPS

MOCP MAXIMUM OVER CURRENT PROTECTION

NO NUMBER

NPLV NON-INTEGRATED PART LOAD VALUE

ODP OPEN DRIP PROOF

P-x PUMP DESIGNATION

PH PHASE

PLEV PART LOAD EFFICIENCY VALUE

QTY QUANTITY

RPM REVOLUTIONS PER MINUTE

RLA RUN LOAD AMPS

SCCR SHORT CIRCUIT CURRENT RATING

SF-x (EXISTING) SUPPLY FAN DESIGNATION

TYP TYPICAL

UH-x (EXISTING) UNIT HEATER DESIGNATION

V VOLTS

VFD VARIABLE FREQUENCY DRIVE

W WATTS

W WIDTH

WB WET BULB

WC WATER COLUMN

WH-x (EXISTING) WATER HEATER DESIGNATION

WPD WATER PRESSURE DROP

(XXX) EXISTING EQUIPMENT DESIGNATION

LEGEND

(X"/X")

THERMOSTAT OR TEMPERATURE SENSOR,

CONTROLLING UNIT AS INDICATED

CONTROL DAMPER

90° DUCT ELBOW - TURNED DOWN

DUCT ELBOW WITH TURNING VANES

DUCT TRANSITION

VARIABLE FREQUENCY DRIVE PANEL

DIRECTION OF AIRFLOW

POINT OF CONNECTION FOR NEW WORK

REMOVE EXISTING TO THIS POINT

DEMOLITION NOTE

EXISTING SIZES AS INDICATED

NEW WORK NOTE

EXISTING TO REMAIN

NEW WORK

EXISTING TO BE REMOVED

FLANGE CONNECTION

PRESSURE GAUGE

PRESSURE GAUGE WITH VALVE

PRESSURE/TEMPERATURE TEST PORT

RUBBER FLEXIBLE CONNECTION

Y-STRAINER

THERMOMETER

THREADED UNION

DIRECTION OF FLOW IN PIPE

CWS

CWR

CHWS

CHWR

D

PIPING TO BE REMOVED

HEAT TRACE TAPE

PIPE DOWN

PIPE TEE DOWN

TWO-WAY CONTROL VALVE

AUTOMATIC AIR VENT

BALL VALVE

BACKFLOW PREVENTER

BUTTERFLY VALVE

CHECK VALVE, HORIZONTAL SWING

PIPE TEE UP

PIPE UP

CHILLED WATER RETURN PIPING

CHILLED WATER SUPPLY PIPING

CONDENSER WATER RETURN PIPING

CONDENSER WATER SUPPLY PIPING

DRAIN PIPING

EXISTING PIPING BELOW OR HIDDEN

GATE VALVE

PRESSURE RELIEF AND PRESSURE REDUCING VALVE

DIFFERENTIAL PRESSURE SENSOR

VENTURI FLOWSTATION

DOMESTIC WATER PIPING (CW)

EXISTING PIPING TO REMAIN

CW

D1

T

PHOTO: NUMBER "PX" ON DRAWING MXX

WATER COOLED CHILLER SCHEDULE

DESCRIPTION

GPM

EVAPORATOR

TOTAL KW

COMPRESSOR DATACONDENSER

GPM QTY

ELECTRICAL

MOCPMCA

REMARKS

C-1 210.0 466 2.4 44.0 607 10.2 1 233 400

EWT

(°F)

WPD

(FT)

LWT

(°F)

EWT

(°F)

WPD

(FT)

UNIT

NO.

REMARKS: 1 PROVIDE WITH 65KA SCCR.

PROVIDE WITH FACTORY-INSTALLED THERMAL DISPERSION TYPE FLOW SWITCHES

RATED

CAPACITY

(TONS)

54.8 95.0

LWT

(°F)

R513A

REFRIGERANT

TYPE

RTHD

SELECTION BASED

ON "TRANE"V PH

460 3

COOLING EFFICIENCY

(KW/TON)

0.6452

RATED COOLING

EFFICIENCY (KW/TON)

0.6366

IPLV

(KW/TON)

0.4163135.5

WIDTH

(IN.)

LENGTH

(IN.)

WEIGHT

(LBS)

16,801

HEIGHT

(IN.)

DIMENSIONAL DATA

85.0

DESCRIPTION

CT-1 95.0607 85.0 78.0

EAT

WB(°F)

COOLING TOWER SCHEDULE

MOTOR DATA

43,0001 1 15

TOTAL CFM

FAN DATA

QUANTITY QUANTITY HP

1 6 460 3

SUMP HEATERS

QUANTITY KW PH

ELECTRICAL

V

REMARKS

AT 19-4J86600

UNIT

NO.

FLOW

(GPM)

EWT

(°F)

LWT

(°F)

SELECTION

BASED ON

"EVAPCO"

REMARKS: 1 PROVIDE NEMA 4XSS PANEL WITH INTEGRAL VFD FOR TOWER FAN AND CONTROLS

FOR SUMP HEATERS. CONTROL PANEL SHALL BE PROVIDED WITH 5kA SCCR.

PROVIDE WITH 304 STAINLESS STEEL COLD WATER BASIN AND UPPER SECTION.

PROVIDE WITH MOTOR DAVIT WITH BASE AND ALUMINUM LADDER WITH

EXTENSION.

PROVIDE WITH ELECTRONIC WATER LEVEL CONTROL PACKAGE BY TOWER

MANUFACTURER.

5 PROVIDE SEPARATE 120V CONNECTION FOR FAN MOTOR SPACE HEATERS.

APPROXIMATE DRAW IS <2 AMPS. COORDINATE CONNECTION DETAILS WITH DIV

26.

THE EQUIPMENT SCHEDULE SHOWN IS BASED ON EVACPO "AT" EQUIPMENT AND IS

INTENDED ONLY TO SHOW THE GENERAL SIZE, CONFIGURATION, LOCATION,

CONNECTIONS, AND SUPPORT FOR EQUIPMENT OR SYSTEMS SPECIFIED WITH

RELATION TO THE OTHER BUILDING SYSTEMS. SEE SPECIFICATION SECTION

230500 FOR TECHNICAL REQUIREMENTS PERTAINING TO THE EQUIPMENT.

INDUCED DRAFT, COUNTERFLOW 6

WEIGHT

(LBS.)

CT-2 607 1 2 3 4INDUCED DRAFT, COUNTERFLOW 5 6

MOTOR DATA

PHVRPMHP

SYSTEMTYPE

PUMP SCHEDULE

REMARKS

P-1 607 50 10 1800 460 3 E-1510 4BD

BASE MOUNTED

END SUCTION

UNIT

NO.

SELECTION

BASED ON

"BELL & GOSSETT"

REMARKS: 1 PROVIDE WITH MATCHED SUCTION DIFFUSER BY PUMP MANUFACTURER.

PROVIDE WITH VARIABLE FREQUENCY DRIVE MATCHED TO MOTOR HP.

PROVIDE PREMIUM EFFICIENCY INVERTER DUTY MOTOR WITH AEGIS

GROUNDING RING.

ENCLOSURE TYPE

ODP80.6

CONDENSER

WATER (LEAD)

REMARKSWHEELTYPE ARRANGEMENT

EXHAUST FAN SCHEDULE

MOTOR DATA

DRIVE

HP V PH

EF-2 INLINE CABINET HORIZONTAL DIRECT 3460 0.375 6137 1 115 1 DDC 11.4 SQ-16-M2-VG1172

UNIT

NO.

ESP

(IN. WC)

MAX.

TIP SPEED

(FPM)

CONTROL

METHOD

MAX.

SONES

SELECTION

BASED ON

"GREENHECK"

MIXED FLOW

FAN

(RPM)

REMARKS: 1 PROVIDE WITH FACTORY MOUNTED AND

WIRED DISCONNECT SWITCH.

PROVIDE WITH EC MOTOR.

OUTLET

VELOCITY

FPM

HELICAL-ROTARY

SCREW CHILLER

REFRIGERANT

CHARGE (LBS)

RLA

1 2 3 4 5

1 2 3 4 5

C-2 210.0 466 2.4 44.0 607 10.2 1 233 40054.8 95.0 R513ARTHD460 30.64520.6366 0.4163135.5 75143 16,8017885.0HELICAL-ROTARY

SCREW CHILLER

525186 1 2 3 4 5

A SEPARATE 115V, 15A CIRCUIT IS REQUIRED FOR CHILLER CONTROLS. MECHANICAL

CONTRACTOR SHALL COORDINATE ALL ELECTRICAL REQUIREMENTS WITH ELECTRICAL

CONTRACTOR PRIOR TO BID.

ALL EFFICIENCY DATA SHALL BE CERTIFIED IN ACCORDANCE WITH AHRI 550/590 AND 551/591.

5 THE EQUIPMENT SCHEDULE SHOWN IS BASED ON TRANE "RTHD" EQUIPMENT AND IS

INTENDED ONLY TO SHOW THE GENERAL SIZE, CONFIGURATION, LOCATION, CONNECTIONS,

AND SUPPORT FOR EQUIPMENT OR SYSTEMS SPECIFIED WITH RELATION TO THE OTHER

BUILDING SYSTEMS. SEE SPECIFICATION SECTION 230500 FOR TECHNICAL REQUIREMENTS

PERTAINING TO THE EQUIPMENT.4

95.0 85.0 78.0 43,0001 1 15 1 6 460 3 AT 19-4J86600

FLOW

(GPM)

HEAD

(FT)

EFFICIENCY

(PLEV %)

P-2 607 50 10 1800 460 3 E-1510 4BD

BASE MOUNTED

END SUCTION 1ODP80.6

CONDENSER

WATER (STAND-BY)

P-3 466 60 10 1800 460 3 E-1510 3BD

BASE MOUNTED

END SUCTION 1ODP82.4

PRIMARY CHILLED

WATER (LEAD)

P-4 466 60 10 1800 460 3 E-1510 3BD

BASE MOUNTED

END SUCTION 1ODP82.4

PRIMARY CHILLED

WATER (STAND-BY)

P-5 932 90 30 1800 460 3 E-1510 5EB

BASE MOUNTED

END SUCTION 1ODP85.4

SECONDARY CHILLED

WATER (LEAD)

P-6 932 90 30 1800 460 3 E-1510 5EB

BASE MOUNTED

END SUCTION 1ODP85.4

SECONDARY CHILLED

WATER (STAND-BY)

4 THE EQUIPMENT SCHEDULE SHOWN IS BASED ON BELL & GOSSETT

"E-1510" EQUIPMENT AND IS INTENDED ONLY TO SHOW THE GENERAL

SIZE, CONFIGURATION, LOCATION, CONNECTIONS, AND SUPPORT FOR

EQUIPMENT OR SYSTEMS SPECIFIED WITH RELATION TO THE OTHER

BUILDING SYSTEMS. SEE SPECIFICATION SECTION 230500 FOR

TECHNICAL REQUIREMENTS PERTAINING TO THE EQUIPMENT.

2 3

2 3

2 3

2 3

2 3

2 3

HEAT TRACE SCHEDULE

EQUIPMENT SERVED

YES DOUBLE

SINGLE OR

DOUBLE TRACED

V

16 120

REMARKS:

SINGLE 8 120

SINGLE 8 120

REMARKS

1 FIELD VERIFY TOTAL LENGTH OF HEAT TRACE REQUIRED. PROVIDE CONTRACTOR

PLANNED PIPING INSTALLATION OR CONSTRUCTED PIPE ROUTING TO HEAT TRACE

CABLE MANUFACTURER TO DETERMINE THE LENGTH REQUIRED. THE CONTRACTOR

IS RESPONSIBLE FOR PROVIDING A SECOND CIRCUIT AND CONTROLLER IF THE

HEAT TRACE CABLE MUST EXCEED THE CIRCUIT MAXIMUM.

REFER TO HEAT TRACE CABLE ORIENTATION DETAIL AND TYPICAL HEAT TRACE

FITTINGS DETAIL ON M301 FOR ADDITIONAL INFORMATION.

EMERGENCY

POWERED

PH

METHOD OF

CONTROL

3 NUMBER OF CIRCUITS SHALL BE EQUAL TO THE NUMBER OF TERMINAL CONTROLLERS

USED PER PIPE UNLESS OTHERWISE NOTED. TERMINAL CONTROLLER "POWERTRACE

ETC-1" OR APPROVED EQUAL. TERMINAL CONTROLLER SHALL HAVE INTEGRAL

GROUND FAULT PROTECTION AND A BAS MONITORING POINT.

THE EQUIPMENT SCHEDULE SHOWN IS BASED ON HEAT TRACE PRODUCTS "2700

SERIES" EQUIPMENT AND IS INTENDED ONLY TO SHOW THE GENERAL SIZE,

CONFIGURATION, LOCATION, CONNECTIONS, AND SUPPORT FOR EQUIPMENT OR

SYSTEMS SPECIFIED WITH RELATION TO THE OTHER BUILDING SYSTEMS. SEE

SPECIFICATION SECTION 230500 FOR TECHNICAL REQUIREMENTS PERTAINING TO THE

EQUIPMENT.

MAXIMUM

LENGTH (LF)

ESTIMATED

LENGTH (LF)

THERMOSTAT

CONTROLLER

YES

YES

NO. OF CIRCUITS

PER PIPE

THERMOSTAT

CONTROLLER

THERMOSTAT

CONTROLLER

THERMOSTAT

CONTROLLER

THERMOSTAT

CONTROLLER

8" CT-1 CWS PIPING

8" CT-1 CWR PIPING

8" CT-2 CWS PIPING

8" CT-2 CWR PIPING

2" CT-2 CW MAKE UP PIPING

THERMOSTAT

CONTROLLER

TOTAL

W/LF

YES DOUBLE 16 120 12

YES DOUBLE 16 120 12

YES DOUBLE 16 120 12

4" CT EQUALIZER PIPING

2 3

4 THE EQUIPMENT SCHEDULE SHOWN IS BASED ON GREENHECK "SQ" EQUIPMENT AND IS INTENDED

ONLY TO SHOW THE GENERAL SIZE, CONFIGURATION, LOCATION, CONNECTIONS, AND SUPPORT FOR

EQUIPMENT OR SYSTEMS SPECIFIED WITH RELATION TO THE OTHER BUILDING SYSTEMS. SEE

SPECIFICATION SECTION 230500 FOR TECHNICAL REQUIREMENTS PERTAINING TO THE EQUIPMENT.

3 FAN SHALL BE CONTROLLED THROUGH BAS

IN RESPONSE TO ROOM TEMPERATURE

AND REFRIGERANT MONITOR. REFER TO

M402 FOR ADDITIONAL INFORMATION.

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

THREE-WAY CONTROL VALVE

MAX

CFM

CONTROLLER

DESIGNATION

SINGLE 8 120 1 6525YES 1

THERMOSTAT

CONTROLLER

2" CT-1 CW MAKE UP PIPING 1 2 3 4

HTC-1

HTC-3

HTC-2

1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL TEMPORARY COOLING EQUIPMENT TO MAINTAIN THE SPACE TEMPERATURE

AND HUMIDITY BELOW THE MAXIMUM LIMITS OF 76°F DB AND 60% RH.

2. TEMPORARY COOLING/DEHUMIDIFICATION EQUIPMENT SHALL BE PROVIDED FOR THE ENTIRE BUILDING IN THE FORM OF A

TEMPORARY RENTAL CHILLER. CHILLER SHALL HAVE 425-TON NET CAPACITY TO MATCH EXISTING CHILLER CAPACITY. RENTAL

CHILLER SHALL BE PROVIDED WITH INTEGRAL ONBOARD PUMPS TO CIRCULATE CHILLED WATER THROUGHOUT THE EXISTING

BUILDING.

3. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL TEMPORARY PIPING, VALVES, PIPING CONNECTIONS, AND ELECTRICAL

CONNECTIONS TO PROVIDE A COMPLETE TEMPORARY CHILLED WATER SYSTEM DURING THE DOWNTIME OF THE EXISTING

CHILLERS.

4. WHEN THE NEW CHILLERS ARE READY FOR CONNECTION TO THE SYSTEM, THE CONTRACTOR SHALL COORDINATE A TIME WITH

THE OWNER THAT THE CHILLED WATER SYSTEM MAY BE TAKEN OFFLINE FOR A MAXIMUM OF 7 DAYS. DURING THIS 7-DAY

DOWNTIME, CONTRACTOR SHALL MAKE FINAL SYSTEM PIPING CONNECTIONS TO NEW CHILLED WATER PIPING IN MECHANICAL

ROOM, AS WELL AS ELECTRICAL CONNECTIONS TO THE NEW CHILLERS.

TEMPORARY CONDITIONING NOTE

PX

M

XX

M

XX

MD101

E N

L A

R G

E D

M E

C H

A N

IC

A

L R

O O

M A

N D

Y A

R D

P L A

N

D E

M O

L

IT

IO

N

BDC

MAR

KDA

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

KEY PLAN

NOT TO SCALE

SCALE FEET

5' 20'15'10'5'0 1/8" = 1'-0"

FEET

10'8'6'4'2'0

SCALE

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

AREA OF WORK

V

IR

G

IN

IA

B

E A

C H

V

IR

G

IN

IA

A T

C R

E P

L A

C E

C H

IL

L

E D

W A

T E

R P

L A

N T

T

ID

E W

A T

E R

C O

M M

U N

IT

Y

C O

L L

E G

E

V

IR

G

IN

IA

B

E A

C H

C A

M P

U S

S T

A T

E P

R O

J E

C T

N O

-B

-1

M

T

C

09-25-2026

ENLARGED MECHANICAL ROOM AND YARD PLAN - DEMOLITION

SCALE: 1/4" = 1'-0"

CT-1 D5

AREA DRAIN (TYP.)

D4

8"

(8")

(8" CONCRETE PAD)

EXISTING CONCRETE PIER TO REMAIN,

REFER TO STRUCTURAL DRAWINGS FOR

ADDITIONAL INFORMATION (TYP.)

(PRE-INSULATED

UNDERGROUND

PIPE)

(10")

(72"/30")

TRANSOM

LOUVER

8"

(PRE-INSULATED

UNDERGROUND

PIPE)

C W

R

C W

S

(SCREEN WALL)

D2

(UH-1)

D4 P-1D7

P-2D7

P-3D7

P-4

D7

C-1D1

C-2D1

C S

D2

CHWR

6"

6"

10"

8"

CWR

D3

D3

8" ADS

D4

(B-1)

(B-2)

(ET)

(ET)

ET

P-5

P-6

(P-9)

(P-10)

(ADS)

CHEMICAL

SHOT

FEEDER

D9

(CHEMICAL

SHOT

FEEDER)

(HWS)

(4")

(2")

(4")

(6")

(3")

8"

3"

(6")

(P-8)

(P-7)

(HW)

(ET)

(DI-1)

(4"ø FLUE)

EF-2(20"/20")

(30"/14" DN

TO FLOOR) D2 D6

D6

(4") HWS UP

(4") HWR UP (8") CHWR UP

(P-10 VFD)

(P-9 VFD)

(8") CHWS UP D4

D4

(4")

(HWR)

(HWS)

(CHWR)

(CHWS)

(SF-1)

(72"/30")

TRANSOM

LOUVER

(72"/30")

TRANSOM

LOUVER

(DHC-1)

(30"/30")

(30"/14")

CWS CS

(H W

S

(H W

R

(HWR)

(EF-1)

(6")

CHWR

8"

8"

8"

8"

C H

W R

10"(10") D4

D4

T

CHWS

CHWS

(DDC PANEL)

P-6 VFD

P-5 VFDD8

D8

REMOVE CENTRIFUGAL CHILLER COMPLETE INCLUDING

ALL CONTROLS AND ACCESSORIES. RELIEF PIPING TO

REMAIN.

DISCONNECT AND REMOVE REFRIGERANT MONITOR

AND ALL ASSOCIATED SENSORS, STROBES, AND HORNS

COMPLETE.

DISCONNECT AND REMOVE 72"/30" CONTROL DAMPER

COMPLETE.

REMOVE CONDENSER/CHILLED WATER PIPING

COMPLETE TO POINT INDICATED. POINT OF

DISCONNECTION SHALL BE AT FLANGE CLOSEST TO

FINISHED GRADE. CAREFULLY REMOVE EXISTING

EXTERIOR PIPE SUPPORTS AS NECESSARY TO

ACCOMMODATE NEW PIPING INSTALLATION. RETAIN

PIPE SUPPORTS FOR REINSTALLATION.

DISCONNECT AND REMOVE COOLING TOWER

COMPLETE INCLUDING ALL CONTROLS AND

ACCESSORIES. STRUCTURAL SUPPORTS TO REMAIN.

REMOVE EXHAUST FAN AND ASSOCIATED DUCT

TRANSITIONS COMPLETE AND DISCONNECT AT POINTS

INDICATED.

DISCONNECT AND REMOVE BASE MOUNTED PUMP

COMPLETE.

DISCONNECT AND REMOVE PUMP VFD COMPLETE.

REMOVE CHEMICAL SHOT FEEDER COMPLETE.

REMOVE CHILLED WATER EXPANSION TANK COMPLETE

INCLUDING HANGERS AND ACCESSORIES.

REMOVE CHILLED WATER AIR SEPARATOR COMPLETE.

REMOVE COOLING TOWER DRAIN PIPING COMPLETE.

REMOVE DOMESTIC COLD WATER PIPING TO POINT

INDICATED. POINT OF DISCONNECTION SHALL BE AT

FLANGE CLOSEST TO FINISHED GRADE.

REMOVE CHILLER CONCRETE PAD COMPLETE.

DEMOLITION NOTES

DESCRIPTIONNO.

D1

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

(M

(M

CT-2 D5

(GENERATOR)

(TRANSFORMER)

(DUMSTER)

(DUMSTER)

D7

D7

CD

CD

D13

D14

AREA DRAIN (TYP.)

(8" CONCRETE PAD)

P1

D4

D4

D4

D5

CT-1 D5

CWS

C W

R

C W

R

C W

S (72"/30")

TRANSOM

LOUVER

COOLING TOWER DEMOLITION PHOTO

4" EQUALIZER PIPE

D2

(20"/20" EXHAUST DUCT

CONTINUED UP TO

TERMINATION ON ROOF)

8"

D2

NOTE: EXISTING CONDITIONS ILLUSTRATED HAVE BEEN

DETERMINED FROM ORIGINAL CONSTRUCTION DOCUMENTS AND

LIMITED NON-INVASIVE FIELD INVESTIGATION. THE CONTRACTOR

SHALL INVESTIGATE FIELD CONDITIONS PRIOR TO COMMENCEMENT

OF WORK, COORDINATE AND MAKE ADJUSTMENTS AS NECESSARY.

(SCREEN WALL)

CT-2

ELECTRICAL

A100B

RECEIVING

A101

CORRIDOR

A104

MECHANICAL

A100

MECHANICAL

A100A

MD

MD

P1

MD

MD

M101

E N

L A

R G

E D

M E

C H

A N

IC

A

L R

O O

M A

N D

Y A

R D

P L A

N

N E

W W

O R

K

BDC

MAR

KDA

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

KEY PLAN

NOT TO SCALE

SCALE FEET

5' 20'15'10'5'0 1/8" = 1'-0"

FEET

10'8'6'4'2'0

SCALE

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

AREA OF WORK

V

IR

G

IN

IA

B

E A

C H

V

IR

G

IN

IA

A T

C R

E P

L A

C E

C H

IL

L

E D

W A

T E

R P

L A

N T

T

ID

E W

A T

E R

C O

M M

U N

IT

Y

C O

L L

E G

E

V

IR

G

IN

IA

B

E A

C H

C A

M P

U S

S T

A T

E P

R O

J E

C T

N O

-B

-1

M

T

C

09-25-2026

ENLARGED MECHANICAL ROOM AND YARD PLAN - NEW WORK

SCALE: 1/4" = 1'-0"

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

KEY PLAN

NOT TO SCALE

SCALE FEET

5' 20'15'10'5'0 1/8" = 1'-0"

FEET

10'8'6'4'2'0

SCALE

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

AREA OF WORK

V

IR

G

IN

IA

B

E A

C H

V

IR

G

IN

IA

A T

C R

E P

L A

C E

C H

IL

L

E D

W A

T E

R P

L A

N T

T

ID

E W

A T

E R

C O

M M

U N

IT

Y

C O

L L

E G

E

V

IR

G

IN

IA

B

E A

C H

C A

M P

U S

S T

A T

E P

R O

J E

C T

N O

-B

-1

M

T

C

09-25-2026

(8")

(8" CONCRETE PAD)

EXISTING CONCRETE PIER TO REMAIN,

REFER TO STRUCTURAL DRAWINGS FOR

ADDITIONAL INFORMATION (TYP.)

(PRE-INSULATED

UNDERGROUND

PIPE)

(10")

(72"/30")

TRANSOM

LOUVER

(PRE-INSULATED

UNDERGROUND

PIPE)

C W

R

C W

S

(SCREEN WALL)

(UH-1)

(B-1)

(B-2)

(ET)

(ET)

(P-9)

(P-10)

(ADS)

(HWS)

(4")

(2")

(4")

(6")

(3")

(6")

(P-8)

(P-7)

(HW)

(ET)

(DI-1)

(4"ø FLUE)

(20"/20")

(30"/14" DN

TO FLOOR)

(4") HWS UP

(4") HWR UP (8") CHWR UP

(P-10 VFD)

(P-9 VFD)

(8") CHWS UP (4")

(HWR)

(HWS)

(CHWR)

(CHWS)

(SF-1)

(72"/30")

TRANSOM

LOUVER

(72"/30")

TRANSOM

LOUVER

(DHC-1)

(30"/30")

(30"/14")

CWS

(H W

S

(H W

R

(HWR)

(EF-1)

(6")

(10")

T

(DDC PANEL)

(GENERATOR)

(TRANSFORMER)

(DUMSTER)

(DUMSTER)

(8" CONCRETE PAD)

(72"/30")

TRANSOM

LOUVER

(20"/20" EXHAUST DUCT

CONTINUED UP TO

TERMINATION ON ROOF)

ELECTRICAL

A100B

RECEIVING

A101

CORRIDOR

A104

MECHANICAL

A100

MECHANICAL

A100A

(M

(M

8"

2"

2 8

3 8

CT-11

T

7 4"

CWS

CWS

8"

6"

8"

6"

C W

S

8"

CWR

CWS

CHWR

8"

10"

C-1

T EF-1

8"

10"

9 11 P-4

9 11 P-3

9 11 P-2

9 11 P-1

V F

D

CHWS

CHWR

V F

D

V F

D

9 11 P-5

9 11 P-6

17 ET

16 ADS

22 CF

8"

8"

(CHEMICAL

SHOT

FEEDER)

8" DECOUPLER

EF-2

1 1/2"

8"

3"

CHWS

8"

8"

3"

2 8

2"

3"

3 8

MOUNT COOLING TOWER ON EXISTING STRUCTURAL

CONCRETE PIER. REFER TO STRUCTURAL DRAWINGS

FOR ADDITIONAL INFORMATION AND MOUNTING

DETAILS.

PROVIDE EXTERIOR CWS/CWR PIPING AND INSULATION

TO POINT INDICATED. REINSTALL EXISTING PIPE

SUPPORTS RETAINED FROM DEMOLITION.

PROVIDE DOMESTIC CW PIPING AND RECONNECT TO

EXISTING AT POINT INDICATED.

PROVIDE COOLING TOWER DRAIN PIPING AND ROUTE

TO EXISTING COURTYARD DRAIN. CONNECT TO

COOLING TOWER STANDARD DRAIN AND OVERFLOW

DRAIN PORTS.

NEMA 4X-SS CONTROL CABINET PROVIDED BY COOLING

TOWER MANUFACTURER. CABINET TO INCLUDE

COOLING TOWER BASIN HEATER CONTRACTOR,

VIBRATION SWITCH, AND ALL REQUIRED CONTROLS.

COORDINATE REQUIREMENTS WITH ELECTRICAL

CONTRACTOR.

PROVIDE 4" COOLING TOWER EQUALIZER PIPING,

INSULATION, AND SUPPORTS. ROUTE SUCH THAT TOP

OF FINISHED PIPING IS APPROXIMATELY 12" ABOVE

GRADE. PROVIDE MANUAL BUTTERFLY VALVE AND

HORIZONTAL CLEANOUT TEE WITH BLIND FLANGE.

LINE VOLTAGE THERMOSTAT FOR HEAT TRACE.

PROVIDE HEAT TRACE AND INSULATE ALL OUTDOOR

PIPING ABOVE GRADE. FINISH WITH ALUMINUM

JACKETING IN ACCORDANCE WITH SPECIFICATION

SECTION 230700.

MOUNT PUMP ON EXISTING CONCRETE PAD. REFER TO

"BASE MOUNTED END SUCTION PUMP PIPING DIAGRAM"

ON DRAWING M301 FOR ADDITIONAL INFORMATION.

PROVIDE LOW PRESSURE DROP 8" SYSTEM STRAINER

UPSTREAM OF CONDENSER WATER PUMP SUCTION

DIFFUSER.

MAINTAIN AT LEAST 36" OF SERVICE CLEARANCE ON AT

LEAST ONE SIDE OF PUMP AS INDICATED.

PROVIDE CHWS/CHWR PIPING, INSULATION,

ACCESSORIES, AND HANGERS AND RECONNECT TO

EXISTING AT POINT INDICATED.

PROVIDE CONDENSER WATER PIPING, ACCESSORIES,

AND HANGERS AND RECONNECT TO EXISTING AT POINT

INDICATED.

PROVIDE PUMP MOTOR VFD AND MOUNT ON UNISTRUT

RACK. REFER TO ELECTRICAL DRAWINGS AND 230500

2.9 FOR ADDITIONAL REQUIREMENTS.

PROVIDE NEW DUCTWORK AND TRANSITIONS AND

RECONNECT TO EXISTING AT POINT INDICATED TO

ACCOMMODATE NEW INLINE EXHAUST FAN. REFER TO

"INLINE EXHAUST FAN MOUNTING DETAIL" ON M301 FOR

ADDITIONAL REQUIREMENTS.

PROVIDE AIR DIRT SEPARATOR SPIROTHERM MODEL

VDN800 OR EQUAL.

PROVIDE 53-GALLON EXPANSION TANK, BELL &

GOSSETT MODEL B200 OR EQUAL. MOUNT ON NEW

CONCRETE PAD.

PROVIDE NEW 4" CONCRETE HOUSEKEEPING PAD.

REFER TO "CONCRETE HOUSEKEEPING PAD DETAIL" ON

DRAWING M301 FOR ADDITIONAL INFORMATION.

PROVIDE COMPLETE COOLING TOWER CHEMICAL

TREATMENT SYSTEM. REFER TO "CHEMICAL

TREATMENT PIPING DIAGRAM" ON DRAWING M301 FOR

ADDITIONAL INFORMATION.

DOMESTIC CW CONNECTION TO CHILLED WATER LOOP.

REFER TO CHILLED WATER PIPING DIAGRAM FOR

ADDITIONAL INFORMATION.

MOUNT CHILLER ON NEW 8" CONCRETE PAD SUCH THAT

PAD EXTENDS 6" BEYOND EDGE OF CHILLER BASE ON

ALL SIDES. REFER TO "CHILLER CONCRETE PAD

DETAIL" ON M301 FOR ADDITIONAL INFORMATION.

PROVIDE 5-GALLON CHEMICAL SHOT FEEDER WITH

FUNNEL, STAND, AND ISOLATION VALVES AND MOUNT

ON EXISTING CONCRETE PAD. REFER TO "5 GALLON

CHEMICAL FEED TANK DETAIL" ON M301 FOR

ADDITIONAL INFORMATION.

PROVIDE 72"/30" CONTROL DAMPER AND MOUNT IN

EXISTING DUCTWORK. DAMPER SHALL BE CONFIGURED

FOR 24V. REFER TO M402 FOR SEQUENCE OF

OPERATION.

PROVIDE WALL-MOUNTED ALARM HORN AND STROBE

FOR USE WITH REFRIGERANT DETECTION SYSTEM.

REFER TO M402 FOR ADDITIONAL REQUIREMENTS.

DESCRIPTIONNO.

NEW WORK NOTES

CT-2

8"

C-2

CD

CD

T

T 7

V F

D V

F D

V F

D

(TYP.

OF 4)

M201

C H

IL

L

E D

A N

D C

O N

D E

N S

E R

W A

T E

R P

IP

IN

G D

IA

G

R A

M S

D

E M

O L

IT

IO

N

BDC

MAR

KDA

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

V

IR

G

IN

IA

B

E A

C H

V

IR

G

IN

IA

A T

C R

E P

L A

C E

C H

IL

L

E D

W A

T E

R P

L A

N T

T

ID

E W

A T

E R

C O

M M

U N

IT

Y

C O

L L

E G

E

V

IR

G

IN

IA

B

E A

C H

C A

M P

U S

S T

A T

E P

R O

J E

C T

N O

-B

-1

M

T

C

09-25-2026

3"DRAIN (TYP.)

3"OVERFLOW (TYP.)

FINISHED GRADE

(TYP.)

2"CW MAKEUP

DRAIN (TYP.)

4" OPEN HUB

VALVES

MODULATING

BY-PASS

STATION

CWR

CWS CWS

VALVES

MODULATING

BY-PASS FLOW

VENTURI

P-1

EXTERIOR INTERIOR

STATION

PAD (TYP.)

4" CONCRETE

(TYP.)

IN PUMP CHASE

C-1

(TYP.)

0-120°F

C-2

CWS

CWR

STATION

CWS

CWR

VENTURI FLOW

VENTURI FLOW

C-1

CHWR

C-2 P-3 P-4

CHWS

FROM BUILDING

BLADDER EXPANSION TANK

W/ FLOORSTAND

SHOT FEEDER

5 GAL. CHEMICALP-5 4" CONCRETE PAD (TYP.)P-6

2" RELIEF VALVE

0-120°F (TYP.)

100 PSI

CHWR

AUTOMATIC AIR VENT

HIGH CAPACITY

VENTURI FLOW

STATION

AIR SEPARATOR

AUTOMATIC AIR VENT

PG - 0 -

CHWS

D5 D5

CONDENSER WATER PIPING DIAGRAM - DEMOLITION

NOT TO SCALE

CHILLED WATER PIPING DIAGRAM - DEMOLITION

NOT TO SCALE

8" EQUALIZER

EXISTING CONCRETE PIER

TO REMAIN, REFER TO

STRUCTURAL DRAWINGS

FOR ADDITIONAL

INFORMATION (TYP.)

D4

8"

8"

D4 D4

D7 D7

D4

D1 D1

FINISHED CONCRETE SLAB

10"

8"

10"

8"

8"

8"

CT-1 CT-2

8"

8"

8"8"

8"

8"

3"

P-2

10"

8"

10"

8"

8"

8"

8" 8"8"8"

6"

6"

8" 6" 6"

8"

8"

6" 6" 6" 6" 6"

8"

8" 8"

8"

8" 8"

8"

8"

1" 6"

8" 8"

2"

1"

2" 2"

2"

2"

8"

8"

D1 D1 D7 D7 D7 D7

BFP

REMOVE CENTRIFUGAL CHILLER COMPLETE INCLUDING

ALL CONTROLS AND ACCESSORIES. RELIEF PIPING TO

REMAIN.

REMOVE CONDENSER/CHILLED WATER PIPING

COMPLETE TO POINT INDICATED. POINT OF

DISCONNECTION SHALL BE AT FLANGE CLOSEST TO

FINISHED GRADE. CAREFULLY REMOVE EXISTING

EXTERIOR PIPE SUPPORTS AS NECESSARY TO

ACCOMMODATE NEW PIPING INSTALLATION. RETAIN

PIPE SUPPORTS FOR REINSTALLATION.

DISCONNECT AND REMOVE COOLING TOWER

COMPLETE INCLUDING ALL CONTROLS AND

ACCESSORIES. STRUCTURAL SUPPORTS TO REMAIN.

DISCONNECT AND REMOVE BASE MOUNTED PUMP

COMPLETE.

DISCONNECT AND REMOVE PUMP VFD COMPLETE.

REMOVE CHEMICAL SHOT FEEDER COMPLETE.

REMOVE CHILLED WATER EXPANSION TANK COMPLETE

INCLUDING HANGERS AND ACCESSORIES.

REMOVE CHILLED WATER AIR SEPARATOR COMPLETE.

REMOVE COOLING TOWER DRAIN PIPING COMPLETE.

DEMOLITION NOTES

DESCRIPTIONNO.

D1

D4

D5

REMOVE DOMESTIC COLD WATER PIPING COMPLETE TO

POINT INDICATED. POINT OF DISCONNECTION SHALL BE

AT FLANGE CLOSEST TO FINISHED GRADE.

REMOVE CHILLER CONCRETE PAD COMPLETE.

REMOVE DOMESTIC COLD WATER PIPING TO

BACKFLOW PREVENTER, INCLUDING PRESSURE RELIEF

AND REDUCING VALVES, AND QUICK FILL BYPASS.

DISCONNECT AND REMOVE CHILLED WATER PIPING

COMPLETE TO POINT INDICATED.

DISCONNECT AND REMOVE EXISTING TWO-WAY

BYPASS VALVE LOCATED AT AHU-2 COIL CONNECTION

AND ASSOCIATED PIPING COMPLETE.

DISCONNECT AND REMOVE EXISTING DP SENSOR

LOCATED AT AHU-2 COIL CONNECTION AND

ASSOCIATED PIPING COMPLETE.

DEMOLITION NOTES

DESCRIPTIONNO.

D13

D14

D15

TO BUILDING

(8")

FROM

BUILDING

8"

3"

(3")

(8")

TO

BUILDING

8"

(3")

3"

TO

DOMESTIC CW

D16

D17

D18

D7

D8

D9

D10

D11

D12

PGPG

PGPG

PG PG

PGPG

PGPG

VENTURI

FLOW

STATION

VENTURI

FLOW

STATION

VENTURI

FLOW

STATION

VENTURI

FLOW

STATION

FINISHED CONCRETE SLAB

VFD

P-5

VFD

P-6

D8D8

D9

EXISTING

PRE-INSULATED

PIPING IN

CONDUIT (TYP.)

M202

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O N

D E

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W A

T E

R P

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IN

G D

IA

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R A

M S

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E W

W O

R K

BDC

MAR

KDA

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

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09-25-2026

FINISHED GRADE

CWR

CWS CWS

EXTERIOR INTERIOR

PAD (TYP.)

4" CONCRETE

CWR

CHWR

CHWS

FROM BUILDING

TO BUILDING

CHWR

CHWS

CONDENSER WATER PIPING DIAGRAM - NEW WORK

NOT TO SCALE

CHILLED WATER PIPING DIAGRAM - NEW WORK

NOT TO SCALE

EXISTING CONCRETE PIER

TO REMAIN, REFER TO

STRUCTURAL DRAWINGS

FOR ADDITIONAL

INFORMATION (TYP.)

(8")

(8")

FINISHED FLOOR

(10")

(10")

(8")

(8")

10"

10"

8"

8"

6"

6"

8"

8"

6"

8"

8"

2"

8"

BFP

2 13 13

VFD

P-2

VFD

P-1

P-19 P-29

CT-1

CT-2

4" OPEN HUB

DRAIN (TYP.)

4 3" 4 3"

3" OVERFLOW (TYP.)

3" DRAIN (TYP.)

6 4"

T 7

T 7

8 8

CWS

CWR

CWS

21 C-1 21 C-2

COOLING

TOWER

CHEMICAL

TREATMENT

607 GPM 607 GPM3/4"

8" 8"

8" 8"

8" 8"

8"8"

8"8"

8" 8"

4"

2" 2"

23 23

MOUNT COOLING TOWER ON EXISTING STRUCTURAL

CONCRETE PIER. REFER TO STRUCTURAL DRAWINGS

FOR ADDITIONAL INFORMATION AND MOUNTING

DETAILS.

PROVIDE EXTERIOR CWS/CWR PIPING AND INSULATION

TO POINT INDICATED. REINSTALL EXISTING PIPE

SUPPORTS RETAINED FROM DEMOLITION.

PROVIDE DOMESTIC CW PIPING AND RECONNECT TO

EXISTING AT POINT INDICATED.

PROVIDE COOLING TOWER DRAIN PIPING AND ROUTE

TO EXISTING COURTYARD DRAIN. CONNECT TO

COOLING TOWER STANDARD DRAIN AND OVERFLOW

DRAIN PORTS.

PROVIDE 4" COOLING TOWER EQUALIZER PIPING,

INSULATION, AND SUPPORTS. ROUTE SUCH THAT TOP

OF FINISHED PIPING IS APPROXIMATELY 12" ABOVE

GRADE. PROVIDE MANUAL BUTTERFLY VALVE AND

HORIZONTAL CLEANOUT TEE WITH BLIND FLANGE.

LINE VOLTAGE THERMOSTAT FOR HEAT TRACE.

PROVIDE HEAT TRACE AND INSULATE ALL OUTDOOR

PIPING ABOVE GRADE. FINISH WITH ALUMINUM

JACKETING IN ACCORDANCE WITH SPECIFICATION

SECTION 230700.

MOUNT PUMP ON EXISTING CONCRETE PAD. REFER TO

"BASE MOUNTED END SUCTION PUMP PIPING DIAGRAM"

ON DRAWING M301 FOR ADDITIONAL INFORMATION.

PROVIDE LOW PRESSURE DROP 8" SYSTEM STRAINER

UPSTREAM OF CONDENSER WATER PUMP SUCTION

DIFFUSER.

PROVIDE CHWS/CHWR PIPING, INSULATION,

ACCESSORIES, AND HANGERS AND RECONNECT TO

EXISTING AT POINT INDICATED.

DESCRIPTIONNO.

NEW WORK NOTES

P-39 P-49 P-59 P-69

6"6"466 GPM 6"466 GPM 6"

6" 6" 6" 8" 8" 8" 8"

TO FD

CF

8"8"

8"

1" 1"

8" DECOUPLER

TO FD

ET

1"

AAV

AAV

ADS

3/4"

2"

2"

PRESSURE REDUCING

VALVE, SET @ 30PSIG

PRESSURE RELIEF

VALVE, SET @ 35PSIG

(8")

(3")

FROM

BUILDING

8"

8"

CHWR

CHWSCHWR

CHWS

CHWR

CHWS

CHWR

CHWS

3"

(3")

FROM

DOMESTIC CW

(8")

TO

BUILDING

8"

21 C-1 21 C-2

VFD

P-3

VFD

P-4

VFD

P-5

VFD

P-6

932 GPM932 GPM466 GPM466 GPM

932 GPM

4" CONCRETE PAD

TO REMAIN

4" CONCRETE PAD

TO REMAIN

FINISHED FLOOR

PROVIDE CONDENSER WATER PIPING, ACCESSORIES,

AND HANGERS AND RECONNECT TO EXISTING AT POINT

INDICATED.

PROVIDE PUMP MOTOR VFD AND MOUNT ON UNISTRUT

RACK. REFER TO ELECTRICAL DRAWINGS AND 230500

2.9 FOR ADDITIONAL REQUIREMENTS.

PROVIDE AIR DIRT SEPARATOR SPIROTHERM MODEL

VDN800 OR EQUAL.

PROVIDE 53-GALLON EXPANSION TANK, BELL &

GOSSETT MODEL B200 OR EQUAL. MOUNT ON NEW

CONCRETE PAD.

PROVIDE NEW 4" CONCRETE HOUSEKEEPING PAD.

REFER TO "CONCRETE HOUSEKEEPING PAD DETAIL" ON

DRAWING M301 FOR ADDITIONAL INFORMATION.

PROVIDE COMPLETE COOLING TOWER CHEMICAL

TREATMENT SYSTEM. REFER TO "CHEMICAL

TREATMENT PIPING DIAGRAM" ON DRAWING M301 FOR

ADDITIONAL INFORMATION.

MOUNT CHILLER ON NEW 8" CONCRETE PAD SUCH THAT

PAD EXTENDS 6" BEYOND EDGE OF CHILLER BASE ON

ALL SIDES. REFER TO "CHILLER CONCRETE PAD

DETAIL" ON M301 FOR ADDITIONAL INFORMATION.

PROVIDE 5-GALLON CHEMICAL SHOT FEEDER WITH

FUNNEL, STAND, AND ISOLATION VALVES AND MOUNT

ON EXISTING CONCRETE PAD. REFER TO "5 GALLON

CHEMICAL FEED TANK DETAIL" ON M301 FOR

ADDITIONAL INFORMATION.

PROVIDE INVERTED PIPE TRAP TO PREVENT DRAIN

DOWN OF WATER INTO TOWER BASIN. TOP OF TRAP

SHALL BE A MINIMUM OF 1'-6" ABOVE TOWER

CONNECTION.

PROVIDE TWO-WAY BYPASS VALVE SIZED FOR 230 GPM.

PROVIDE 4" PIPING AND RECONNECT TO EXISTING TAPS

AT AHU-3 CHILLED WATER PIPING.

PROVIDE NEW DP SENSOR ACROSS AHU-3 CHILLED

WATER COIL CONNECTION.

DESCRIPTIONNO.

NEW WORK NOTES

V-1 V-2

24 25

24 25

4"

4"

1/2"

1/2"

T 7

HTC-1

HTC-2

HTC-3

EXISTING

PRE-INSULATED

PIPING IN

CONDUIT (TYP.)

MOTORIZED

ISOLATION

VALVE (TYP.)

MOTORIZED

ISOLATION

VALVE (TYP.)

M301

M E

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A

IL

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BDC

MAR

KDA

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

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HEAT TRACE THERMOSTAT CONTROLLER DETAIL

NOT TO SCALE

AMBIENT AIR TEMPERATURE SENSOR TO BE

PROVIDED BY THERMOSTAT CONTROLLER

MANUFACTURER. IF THE CONTROLLER IS

LOCATED INSIDE, DIVISION 23 CONTRACTOR

SHALL RUN THE SENSOR OUTSIDE NEAR

TRACED PIPE. IF TERMINAL IS LOCATED

OUTSIDE, BIND TEMPERATURE SENSOR NEXT TO

THE TERMINAL.

THERMOSTAT

CONTROLLER

NEMA 4X JUNCTION BOX AND

PIPE STAND OFF CONTAINING

POWER WIRING TO HEAT

TRACE CABLE CONNECTION.

MANUFACTURER POWER

CONNECTION KIT PROVIDED BY

DIVISION 23 CONTRACTOR.

HEAT TRACE CABLE PROVIDED

AND INSTALLED BY DIVISION

23 CONTRACTOR.

HYDRONIC PIPE

HYDRONIC PIPING

INSULATION

POWER WIRE AND CONDUIT

DIVISION 26 PROVIDED AND

INSTALLED. CONNECTION TO

POWER CONNECTION KIT

MADE BY DIV 26 CONTRACTOR.

POWER WIRE AND CONDUIT

DIVISION 26 PROVIDED AND

INSTALLED.

ALL LABOR AND MATERIAL IN THIS

DETAIL SHALL BE DIVISION 23

PROVIDED AND INSTALLED UNLESS

OTHERWISE INDICATED.

BAS CONTRACTOR TO PROVIDE WIRE

AND CONDUIT TO CONNECT TO

INTEGRAL CONTACTS. BAS

CONNECTION SHALL BE FOR

MONITORING ONLY.

HEAT TRACE ORIENTATION DETAIL

NOT TO SCALE

45° 45°

HEAT TRACE

CABLE

SINGLE TRACE

HEAT TRACE

CABLE

DUAL TRACE

45° 45°

TYPICAL HEAT TRACE CABLE - TEE FITTINGS DETAIL

NOT TO SCALE

PIPE TEE - DOUBLE TRACED

PIPE TEE - SINGLE TRACED

FIBERGLASS TAPE

FIBERGLASS TAPE

MANUFACTURER

TEE SPLICE KIT

REMARK:

THE BASIS OF DESIGN HEAT TRACE CABLE IS THE HEAT TRACE PRODUCTS, LLC MODEL 2700. THE ABOVE ARE

MANUFACTURER RECOMMENDED TRACINGS FOR THE BASIS OF DESIGN HEAT TRACE CABLE. THE CONTRACTOR IS

RESPONSIBLE FOR OBTAINING AND FOLLOWING THE SUBMITTED HEAT TRACE MANUFACTURER'S INSTALLATION

INSTRUCTIONS.

PIPE

PIPE WELDED TO ANGLE (TYP)

DOUBLE NUTTED (TYP)

2-3" x 3" x 1/4" ANGLE SUPPORTS

DOUBLE NUTTED (TYP)

WASHER (TYP)

PIPE HANGER SUPPORT DETAIL

NOT TO SCALE

PIPE INSULATION WITH

VAPOR BARRIER

CALCIUM SILICATE

PIPE INSERT (TYP)

VIBRATION ISOLATORS

WHERE REQUIRED BY

SPECIFICATIONS

HANGER ROD, SUSPEND

FROM OVERHEAD (TYP)

WASHER (TYP)

BASE MOUNTED PUMP PIPING DIAGRAM

NOT TO SCALE

GROUT PUMP BASE PER

MANUFACTURER'S INSTRUCTIONS.

ALIGN PUMP AFTER INSTALLATION

AND PRIOR TO GROUTING BASE.

4" CONCRETE PAD

PUMP

PUMP BASE

MOTOR

COUPLING GUARD

CONCENTRIC REDUCER

Y-STRAINER (PUMPS

P-1 AND P-2 ONLY)

PRESSURE

GAUGE (TYP)

RUBBER FLEXIBLE CONNECTOR (TYP)

(ISOLATION) BUTTERFLY VALVE (TYP)

VERTICAL LIFT CHECK VALVE

CHEMICAL TREATMENT PIPING DIAGRAM

NOT TO SCALE

CWS (FROM

COOLING TOWER)

COLD WATER

MAKEUP

CWR (TO COOLING

TOWER)

CHILLER

CONDENSER

BARREL

SAMPLE

LINE

4 (TYP. OF 3)

BLOWDOWN

CHEMICAL FEED RETURN

TO CONDENSER RETURN

INHIBITOR BIOCIDE A BIOCIDE B

8 (TYP.)

NOTE: RECEPTACLE FOR

CONTROLLER AND

CHEMICAL FEED SYSTEM

SHALL BE PROVIDED BY

DIVISION 26

COOLING WATER CONTROLLER,

"WALCHEM WCT600" OR EQUAL.

FLOWSWITCH PLUMBING

ASSEMBLY

CONDUCTIVITY PROBE

CHEMICAL PUMP, "WALCEHM

EZB11D1-VC" OR EQUAL.

3/4" BLEED SOLENOID VALVE

BILL OF MATERIALS

DESCRIPTIONNO.

(THIS DIAGRAM

ONLY)

3/4" CONTACT HEAD MAKE-UP

WATER METER

SAMPLE VALVE

3/4" PVC PIPING

PVC BALL CHECK VALVE

3/4" PVC Y-STRAINER

3/8" POLYETHYLENE BACKBOARD

DESCRIPTIONNO.

BILL OF MATERIALS

(THIS DIAGRAM

ONLY)

IN-LINE EXHAUST FAN MOUNTING DETAIL

NOT TO SCALE

SPRING HANGER. INSTALL

AS CLOSE TO STRUCTURE

ATTACHMENT AS POSSIBLE

(TYP)

THREADED

ROD TO

STRUCTURE

FLEXIBLE

CONNECTION

(TYP OF 2)

BACKDRAFT

DAMPER

UNISTRUT

PLUGGED CROSSES (TYP.)

3/4" TO PUMP SUCTION

3/4" TO PUMP DISCHARGE

HOSE BIBB

BALL VALVE

3 1/2" MIN.

OPENING

CAPACITY

APPROX.

TWIST OFF

APPROX. 15"

PRESSURE CAP

5 GALLON MINIMUM

5 GALLON CHEMICAL FEED TANK DETAIL

10"

NOTE: INSTALL IN ACCORDANCE WITH MANUFACTUER RECOMMENDATIONS.

NOT TO SCALE

FUNNEL

CHILLER CONCRETE PAD DETAIL

NOT TO SCALE

NOTE: PROVIDE 3000 PSI

CONCRETE AND FRAME CORNERS

WITH 1-1/2" ANGLE.

4"

CONCRETE PAD (TYP.)

8"

#5 BARS @ 12" O.C.

EACH WAY TOP AND

BOTTOM

12" THICK STRUCTURAL

CONCRETE MAT SLAB

C L R

C L R

3" CLR. (TYP.)

COMPACTED EARTH (TYP.)

1" CHAMFER (TYP)CHILLER

M401

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BDC

MAR

KDA

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD VA BEACH, VA 23452

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CHILLED AND CONDENSER WATER SYSTEM SEQUENCE OF OPERATION

CHILLED AND CONDENSER WATER SYSTEM POINTS LIST

POINT NAME

HARDWARE POINTS

AI AO BI BO AV BV

TREND

SOFTWARE POINTS

OUTSIDE AIR TEMP.

GRAPHICAL USER INTERFACE MAIN SCREEN

A. CHILLED WATER SYSTEM CONTROL

1. ON A CALL FOR COOLING AT AHU-1, -2 , OR -3 (i.e. IF THE UNIT'S

ASSOCIATED CHILLED WATER VALVE MODULATES MORE THAN 5%

OPEN), THE BAS SHALL ENABLE THE SECONDARY CHILLED WATER PUMP

(P-5 LEAD, P-6 STAND-BY). AFTER A PERIOD OF 3 MINUTES (ADJ.), ON A

RISE IN CHILLED WATER SUPPLY TEMPERATURE ABOVE SETPOINT (44°F,

ADJ.), THE BAS SHALL ENABLE THE PRIMARY CHILLED WATER PUMP (P-3

LEAD, P-4 LAG) AND THE CHILLER (C-1 LEAD, C-2 LAG). THE

FACTORY-PROVIDED CHILLER CONTROLLER SHALL MODULATE THE

CHILLER TO MAINTAIN THE CHILLED WATER SUPPLY TEMPERATURE

SETPOINT.

a. WHEN THE BAS BEGINS TO ENABLE THE LEAD CHILLER, IT SHALL

FIRST MODULATE OPEN THE ASSOCIATED CHILLER'S ISOLATION

VALVES ON ITS EVAPORATOR AND CONDENSER WATER RETURN

PIPING. AFTER A 90 SECOND (ADJ.) DELAY, THE LEAD PRIMARY

CHILLED WATER PUMP AND LEAD CONDENSER WATER PUMP SHALL

BE ENABLED. LEAD CHILLER SHALL THEN BE ENABLED ONCE FLOW

IS PROVEN THROUGH THE CONDENSER AND EVAPORATOR BARRELS

VIA THE CHILLER'S INTERNAL FLOW SWITCHES. IF THE LEAD

CHILLER HAS BEEN ENABLED AND THE CHILLED WATER SUPPLY

TEMPERATURE IS STILL ABOVE SETPOINT, THE LAG CHILLER AND ITS

ASSOCIATED PRIMARY CHILLED WATER PUMP SHALL BE ENABLED.

THE LAG CHILLER SHALL BE MODULATED AS NECESSARY TO

MAINTAIN THE CHILLED WATER SUPPLY TEMPERATURE.

b. THE PRIMARY CHILLED WATER PUMP SHALL OPERATE AT CONSTANT

SPEED WHEN ENABLED TO MAINTAIN THE CHILLER EVAPORATOR

MINIMUM FLOW.

c. WHEN THE SECONDARY CHILLED WATER PUMP HAS BEEN ENABLED, ITS SPEED SHALL BE CONTROLLED TO MAINTAIN CHILLED WATER

SYSTEM PRESSURE SETPOINT (30 PSIG, ADJ.) AS MEASURED BY A

DIFFERENTIAL PRESSURE TRANSMITTER LOCATED DOWNSTREAM

(ACROSS AHU-2 CHWS/CHWR PIPING UPSTREAM OF THE NEW 2-WAY

BYPASS VALVE). THE MINIMUM SPEED OF THE SECONDARY CHILLED

WATER PUMP SHALL BE SET NOT TO EXCEED THE MAXIMUM FLOW

THROUGH THE EXISTING 2-WAY BYPASS VALVE (230 GPM). ON A

FALL IN SYSTEM DIFFERENTIAL PRESSURE, THE PUMP SPEED SHALL

BE INCREASED. ON A RISE IN SYSTEM DIFFERENTIAL PRESSURE,

THE REVERSE SHALL OCCUR. ON A CONTINUED RISE IN PRESSURE

IF THE PUMP SPEED IS AT MINIMUM, THE BAS SHALL MODULATE

OPEN THE 2-WAY BYPASS VALVE LOCATED ACROSS AHU-2 CHILLED

WATER PIPING.

d. THE SECONDARY DIFFERENTIAL PRESSURE SETPOINT SHALL BE

RESET DOWNWARD IN 1PSIG INCREMENTS EVERY 10 MINUTES (ADJ.)

UNTIL ONE CHILLED WATER VALVE IS 95% OPEN.

2. IF THE LEAD PRIMARY CHILLED WATER PUMP FAILS, THE LAG PUMP

SHALL BE ENABLED. IF THE LEAD CHILLER FAILS, THE LAG CHILLER

SHALL BE ENABLED. IF THE LEAD SECONDARY CHILLED WATER PUMP

FAILS, THE STAND-BY PUMP SHALL BE ENABLED. LEAD AND

LAG/STAND-BY CHILLERS/PUMPS SHALL BE ALTERNATED WEEKLY,

MONTHLY, OR BASED ON RUNTIME AS SELECTED BY SYSTEM

OPERATOR. AN ALARM SHALL BE TRIGGERED AT THE OWNER'S

WORKSTATION ANYTIME A PUMP OR CHILLER FAILS.

B. CONDENSER WATER SYSTEM (COOLING TOWER) CONTROL

1. ONCE THE CHILLED WATER PLANT HAS BEEN ENABLED, THE LEAD

CONDENSER WATER PUMP (P-1 LEAD, P-2 LAG) SHALL BE ENABLED.

INITIALLY, THE LEAD COOLING TOWER (CT-1 LEAD, CT-2 LAG) BYPASS

CONTROL VALVE (V-1 LEAD, V-2 LAG) SHALL BE FULLY OPEN TO THE

TOWER BASIN AND FULLY CLOSED TO THE TOWER INLET. ON A RISE IN

CONDENSER WATER SUPPLY TEMPERATURE ABOVE SETPOINT (85°F),

THE BAS SHALL MODULATE THE BYPASS CONTROL VALVE OPEN TO THE

LEAD TOWER INLET.

a. IF THE LEAD AND LAG CHILLERS HAVE BEEN ENABLED BY THE BAS, THE LEAD AND LAG CONDENSER WATER PUMPS AND COOLING

TOWERS SHALL ALSO BE ENABLED BY THE BAS TO MATCH THE

SYSTEM LOAD.

2. IF THE VALVE HAS BEEN MODULATED 100% OPEN TO THE LEAD TOWER

INLET AND THE CONDENSER WATER SUPPLY TEMPERATURE IS STILL

ABOVE SETPOINT, THE LEAD COOLING TOWER FAN SHALL BE ENABLED

BY THE BAS AND MODULATED TO MAINTAIN THE CONDENSER WATER

SUPPLY TEMPERATURE SETPOINT. ON A RISE IN CONDENSER WATER

SUPPLY TEMPERATURE, THE FAN SPEED SHALL BE INCREASED. ON A

FALL IN CONDENSER WATER SUPPLY TEMPERATURE, THE REVERSE

SHALL OCCUR.

3. ON A FALL IN CONDENSER WATER SUPPLY TEMPERATURE BELOW

SETPOINT, THE COOLING TOWER FAN SHALL BE MODULATED DOWN TO

MINIMUM SPEED. ON A CONTINUED FALL, THE FAN SHALL BE DISABLED,

AND THE BYPASS CONTROL VALVE SHALL BE MODULATED OPEN TO THE

TOWER BASIN AND CLOSED TO THE TOWER INLET.

4. IF THE LEAD CONDENSER WATER PUMP FAILS, THE LAG PUMP SHALL BE

ENABLED. IF THE LEAD COOLING TOWER FAILS, THE LAG TOWER SHALL

BE ENABLED. LEAD AND LAG PUMPS/TOWERS SHALL BE ALTERNATED

WEEKLY, MONTHLY, OR BASED ON RUNTIME AS SELECTED BY SYSTEM

OPERATOR. AN ALARM SHALL BE TRIGGERED AT THE OWNER'S

WORKSTATION ANYTIME A PUMP OR TOWER FAILS.

5. ON A FALL IN OUTSIDE AIR TEMPERATURE BELOW 40°F (ADJ.), THE

TOWER BASIN HEATER AND HEAT TRACE ON CONDENSER WATER PIPING

SHALL BE ENABLED. ON A RISE IN OUTSIDE AIR TEMPERATURE ABOVE

40°F (ADJ.), THE BASIN HEATERS AND HEAT TRACE SHALL BE DISABLED.

AN INDIVIDUAL LOCAL PILOT LIGHT SHALL BE MOUNTED ON COOLING

TOWER CONTROL PANEL FOR BOTH THE HEAT TRACE AND BASIN

HEATERS AND SHALL INDICATE WHENEVER EACH COMPONENT IS

ENERGIZED.

C. THE FOLLOWING ALARMS SHALL BE GENERATED AT THE OWNER'S

WORKSTATION IF:

1. COOLING TOWER FAN STATUS DOES NOT MATCH FAN COMMAND

2. PUMP STATUS DOES NOT MATCH PUMP COMMAND

3. BUILDING CHILLED WATER SUPPLY TEMPERATURE RISES ABOVE 46°F

(ADJ.) FOR MORE THAN 5 MINUTES (ADJ.)

4. BUILDING CHILLED WATER SUPPLY TEMPERATURE FALLS BELOW 40°F

(ADJ.) FOR MORE THAN 5 MINUTES (ADJ.)

5. COOLING TOWER BASIN WATER TEMPERATURE FALLS BELOW 38° F

(ADJ.)

6. CONDENSER WATER SUPPLY TEMPERATURE RISES ABOVE 87°F (ADJ.)

7. CONDENSER WATER RETURN TEMPERATURE RISES ABOVE 97°F (ADJ.)

8. BUILDING CHILLED WATER DIFFERENTIAL PRESSURE IS MORE THAN 5

PSI (ADJ.) ABOVE SETPOINT FOR MORE THAN 15 MINUTES (ADJ.)

9. ANY VFD ALARM IS GENERATED

10. ANY CHILLER ALARM IS GENERATED

11. ANY COOLING TOWER ALARM IS GENERATED

CHW SYSTEM ENABLE

C-1

C-2

P-3

BACNET

BACNET COMM FROM

PREVIOUS CONTROLLER

S/S

SPEED

STATUS

AI

BO

P-3 SPEED

P-3 START/STOP

P-3 STATUS

BACNET COMM TO

NEXT CONTROLLER

BI

AI

C-1

CHWS

TEMP.

AI

C-2

SUPPLY

WATER

TEMP.

P-4

BACNET

BACNET COMM FROM

PREVIOUS CONTROLLER

S/S

SPEED

STATUS

AI

BO

P-4 SPEED

P-4 START/STOP

P-4 STATUS

BACNET COMM TO

NEXT CONTROLLER

BI

P-5

BACNET

BACNET COMM FROM

PREVIOUS CONTROLLER

S/S

SPEED

STATUS

AI

BO

P-5 SPEED

P-5 START/STOP

P-5 STATUS

BACNET COMM TO

NEXT CONTROLLER

BI

P-6

BACNET

BACNET COMM FROM

PREVIOUS CONTROLLER

S/S

SPEED

STATUS

AI

BO

P-6 SPEED

P-6 START/STOP

P-6 STATUS

BACNET COMM TO

NEXT CONTROLLER

BI

CHWS

CHWR

24 VAC

SYSTEM DP

(LOCATED

ACROSS

AHU-2)

BYPASS

VALVE

POSITION

AI

AI

AI

AI

C-2

RETURN

WATER

TEMP.

C-1

CHWR

TEMP. AI

PRIMARY

CHWS

TEMP.

AI

SECONDARY

CHWS

TEMP.

AI

SECONDARY

CHWR

TEMP.

AI

PRIMARY

CHWR

TEMP.

AI

SYSTEM

CHWS

TEMP.

P-2

BACNET

BACNET COMM FROM

PREVIOUS CONTROLLER

S/S

SPEED

STATUS

AI

BO

P-2 SPEED

P-2 START/STOP

P-2 STATUS

BACNET COMM TO

NEXT CONTROLLER

BI

P-1

BACNET

BACNET COMM FROM

PREVIOUS CONTROLLER

S/S

SPEED

STATUS

AI

BO

P-1 SPEED

P-1 START/STOP

P-1 STATUS

BACNET COMM TO

NEXT CONTROLLER

BI

AI

C-1

CWR

TEMP.

AI

C-1

CWS

TEMP.

AI

C-2

CWR

TEMP.

AI

C-2

CWS

TEMP.

S/S

SPEED

BACNET

STATUS

CT-2 SPEED

CT-2 START/STOP

CT-2 STATUS

CT-2

BACNET COMM TO

NEXT CONTROLLER

BACNET COMM FROM

PREVIOUS CONTROLLER

SOLENOID

FILL VALVE

AI

BO

BI

S/S

SPEED

BACNET

STATUS

CT-1 SPEED

CT-1 START/STOP

CT-1 STATUS

CT-1

BACNET COMM TO

NEXT CONTROLLER

BACNET COMM FROM

PREVIOUS CONTROLLER

VIBRATION

SWITCH BY

TOWER

MNFR (TYP.)

ELECTRONIC

SUMP LEVEL

CONTROL

(TYP.)

SOLENOID

FILL VALVE

AI

BO

BI

BYPASS

VALVE V-1

POSITION

AI

BYPASS

VALVE V-2

POSITION

AI

AI

BASIN

TEMP.AI

BASIN

TEMP.

AI

CT-1

CWR

TEMP

AI

CT-2

CWR

TEMP

AI

CT-1

CWS

TEMP

AI

CT-2

CWS

TEMP

CW CW

AIAI

CT-1 BASIN

HEATER

STATUS

MOUNT LIGHT ON

FACE OF CT-1

CONTROL CABINET

BI

CT-1 HEAT

TRACE

STATUS

MOUNT LIGHT ON

FACE OF CT-1

CONTROL CABINET

BI

CT-2 BASIN

HEATER

STATUS

MOUNT LIGHT ON

FACE OF CT-2

CONTROL CABINET

BI

CT-2 HEAT

TRACE

STATUS

MOUNT LIGHT ON

FACE OF CT-2

CONTROL CABINET

BI

OUTSIDE

AIR TEMP.

OUTSIDE AIR

TEMP. SENSOR

(BY BAS

CONTRACTOR)

AI

CT-1 BASIN

HEATER

ENABLE

BO

CT-2 BASIN

HEATER

ENABLE

BO

C-2 EVAP.

DIFF.

PRESS.

AI

C-2 EVAP.

DIFF.

PRESS.

AI

C-1 EVAP.

DIFF.

PRESS.

AI

C-2 COND.

DIFF.

PRESS.

AI

AI

SYSTEM

CWR

TEMP.

AI

SYSTEM

CWS

TEMP.

CHILLED AND CONDENSER WATER SYSTEM CONTROL DIAGRAM

NOT TO SCALE

ALARM

SHOW

ON

GRAPHIC

X X X

X X X

CT-1 SPEED

CT-1 START/STOP

CT-1 STATUS

X

X

X X

X

X

X

X

BYPASS VALVE V-1 POSITION

CT-1 BASIN TEMPERATURE

CT-1 SUMP LEVEL

CT-1 CWS TEMP

CT-1 CWR TEMP

CT-1 BASIN HEATER STATUS

CT-1 BASIN HEATER ENABLE

CT-1 HEAT TRACE STATUS

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

CT-2 SPEED

CT-2 START/STOP

CT-2 STATUS

X

X

X XX

X

BYPASS VALVE V-2 POSITION

CT-2 BASIN TEMPERATURE

CT-2 SUMP LEVEL

CT-2 CWS TEMP

CT-2 CWR TEMP

CT-2 BASIN HEATER STATUS

CT-2 BASIN HEATER ENABLE

CT-2 HEAT TRACE STATUS

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

XSYSTEM CWS TEMP X X X

SYSTEM CWR TEMP X X X

CHILLER CONTROL PANEL PROVIDED

BY CHILLER MANUFACTURER. BAS

CONTRACTOR SHALL INTEGRATE

ALL FACTORY-PROVIDED POINTS

INTO SECONDARY GRAPHIC

DEDICATED TO EACH CHILLER

C-1 CWR TEMP X X X

C-1 CWS TEMP X X X

C-1 COND. DIFF. PRESS.

C-1 STATUS

STATUSBI

STATUSBI

C-1 CHWR TEMP

C-1 CHWS TEMP

C-1 EVAP. DIFF. PRESS.

X

X

X

X

X

X

X

X

C-2 CWR TEMP X X X

C-2 CWS TEMP X X X

C-2 COND. DIFF. PRESS.

C-2 STATUS

C-2 CHWR TEMP

C-2 CHWS TEMP

C-2 EVAP. DIFF. PRESS.

X

X

X

X

X

X

X

X

X

X

X

PRIMARY CHWR TEMP.

PRIMARY CHWS TEMP.

SECONDARY CHWR TEMP.

SECONDARY CHWS TEMP.

SYSTEM CHWS TEMP.

SYSTEM DP

BYPASS VALVE POSITION

PUMP SPEED (TYP. OF 6)

PUMP START/STOP (TYP. OF 6)

PUMP STATUS (TYP. OF 6)

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

AI

SYSTEM

SECONDARY

CHWS

FLOW

AI

SYSTEM

PRIMARY

CHWR

FLOW

SYSTEM PRIMARY CHWR FLOW X XX

SYSTEM SECONDARY CHWS FLOW X XX

ABBREVIATIONS

AI ANALOG INPUT

AO ANALOG OUTPUT

AV ANALOG VARIABLE

BI BINARY INPUT

BO BINARY OUTPUT

BV BINARY VARIABLE

CHWR CHILLED WATER RETURN

CHWS CHILLED WATER SUPPLY

COND CONDENSER

CWR CONDENSER WATER RETURN

CWS CONDENSER WATER SUPPLY

DP DIFFERENTIAL PRESSURE

DIFF DIFFERENTIAL

EVAP EVAPORATOR

PRESS PRESSURE

S/S START/STOP

TEMP TEMPERATURE

CW MAKEUP FLOAT

SWITCH (TYP.)

M402

A U

T O

M A

T

IC

T E

M P

E R

A T

U R

E C

O N

T R

O L S

BDC

MAR

KDA

DATE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

COMM. NO:

09.25.2026

24-110

MARK DESCRIPTION DATE

REVISIONS

TELEPHONE: (757) 599-4415

THOMPSON

22 ENTERPRISE PARKWAY HAMPTON, VA 23666

PROJECT NUMBER: 24-110

4323 COX ROAD GLEN ALLEN, VA 23060

2809 S. LYNNHAVEN ROAD…