4-4 - SCOPE CPA Chiller Plant Updates.pdf

4 – Scope – CMAR/ GC Page 1 of 3 Form rev. 01/2024

4 – Scope of Services for GC

All services provided are to be performed in conjunction with the A/E and County.

Architects and Engineers (A/E) Before selecting GC, County has selected and designated an A/E who shall prepare the construction documents for the Project and who has full responsibility for complying with, the laws relating to architectural and engineering services in Texas including, but not limited to, the Texas Engineering Practice Act (Occupations Code Chapters 1001 and 1051), as applicable.

Personnel Respondent shall maintain a staff of properly trained and experienced personnel to ensure satisfactory performance under this Contract.

- Respondent shall assign to County a designated representative who will be responsible for the coordination and administration of County's requirements.

- County will insist that the superintendent be on the job full time (all day/all working days) from the start of construction through substantial completion. After substantial completion, on-site respondent supervision will be required at any time work is under way at the site.

Project Execution Except as otherwise set forth in the Contract between County and GC and other Contract Documents, County shall provide or contract for, independently of GC, the inspection services, the testing of construction materials engineering, and the verification testing services necessary for acceptance of the facility by County.

Construction Cost

- Complete accounting records of work performed on the Project

- Review all pay requests and process for payment through A/E

- Review and prepare summary application for payment based on the Contractors' Certificate of

Payment and material vendors' invoicing

- Coordinate change orders, verify subcontractors' estimates as reasonable and accurate, secure

County's approval before change order work is completed

- Provide all necessary materials, facilities, and ancillary services (such as cleanup) necessary for provision of the Services not being provided by the subcontractor(s) when necessary for the performance of the Services during construction and for completion of the construction

Construction Scheduling

- Review County's anticipated opening date and develop project schedule

- Sequence schedule to support contract documents and opening date and recommend any necessary corrective actions

4 – Scope – CMAR/ GC Page 2 of 3

- Attend milestone review meetings with County and Project team immediately before commencing each Project phase

- At the milestone review meetings, assist County in identifying goals for the upcoming work, examine the performance of the Project team against the goals in the preceding phase, and propose corrective measures as necessary or appropriate.

- Coordinate and expedite the ordering and delivery of materials, especially those requiring a long lead time

Construction Administration

- Provide on-site job trailer, temporary fencing, temporary utilities, and other services as appropriate

- Schedule, conduct, and report with the A/E on weekly meetings with subcontractors

- Require safety programs and certificates of insurance from subcontractors

- Monitor and supervise safety programs of subcontractors and verify compliance with laws and regulations

- Coordinate interpretation of the meaning and intent of drawing and specification and assist in resolution of questions

- Review all shop drawings and submittals from subcontractors

- Keep records of all documents at the job site, including red-line changes

- Administer construction contracts prepared by County

- Coordinate necessary testing services

- Record progress of Project

Fulltime Onsite Supervision

- Experienced Construction Field Superintendent on site daily, every workday, to monitor work and progress of the Project

- Manage subcontractor performance

- Monitor and enforce County construction conditions

- Visual inspections of workmanship and special inspections as needed to verify quality of work, and maintenance to specifications

- Written progress reports to County and A/E submitted weekly during contractor meetings

- Arrange for delivery and storage of all material purchased by County

- Coordinate contract scheduling, monitor contractor labor force, verify delivery of contractor materials

Disputes and Resolution

- Assist County and A/E with review and management of claims

- Mediate conflicts between Contractor and County, if necessary

- Mediate conflicts between A/E and County, if necessary

Project Close Out

- Supervise subcontractors' final testing and start-up of utilities, operations systems and equipment

- Walk through and prepare "punch list" with County, A/E and consulting engineers

4 – Scope – CMAR/ GC Page 3 of 3

- Participate in final inspection with County and A/E

- Prepare equipment operational manuals and provide preventive maintenance plan

- Verify appropriate training and in-service has been provided by subcontractors for County

- Supervise completion of punch list items

- Compile all product data, samples, warranties, manuals, red line drawings, keys, maintenance stock, extra materials, and other information or materials to be provided to County

- Coordinate Project substantial completion and final payments with A/E and County

Plans, Drawings, and Specifications Attached below:

811 BARTON SPRINGS ROAD, SUITE 900

AUSTIN, TEXAS 78704

Architecture - Engineering - Interiors

350 DISCOVERY BLVD

CEDAR PARK , TX 78613

WILLIAMSON COUNTY

BUILDING CODE ANALYSIS

OWNER:

OR PROJECT NUMBER:

PROJECT:

LOCATION:

JURISDICTION:

APPLICABLE CODES:

PROJECT REGISTRATION:

WILLIAMSON COUNTY

2515.00

CPA CHILLER PLANT UPGRADE

350 DISCOVERY BOULEVARD

CEDAR PARK, TX 78613

CITY OF CEDAR PARK

2021 INTERNATIONAL BUILDING CODE

2020 NATIONAL ELECTRICAL CODE

2021 INTERNATIONAL PLUMBING CODE

2021 INTERNATIONAL MECHANICAL CODE

2021 INTERNATIONAL FIRE PREVENTION CODE

2021 INTERNATIONAL FUEL GAS CODE

2021 INTERNATIONAL ENERGY CONSERVATION CODE

2012 TEXAS ACCESSIBILITY STANDARDS

TABS2026002980

Revisions:

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

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CPA CHILLER PLANT UPDATE

350 DISCOVERY BOULEVARD, CEDAR PARK, TX 78613

10/30/25

CONTRACT DOCUMENTS

Mission: We believe every project has a mission and strive to design environments that have a purpose that extend far beyond form and function.

10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

COVER SHEET

G1.0

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B E R

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TAS COMPLIANCE NOTE:

THIS PROJECT DOES NOT QUALIFY AS AN ALTERATION

PER TAS 106.5.5.

Drawing Index

Sheet Number Sheet Name

GENERAL

G1.0 COVER SHEET

MECHANICAL

M1.1 MECHANICAL NOTES, SYMBOLS AND ABBREVIATIONS

M2.1 MECHANICAL DEMOLITION PLAN - FIRST FLOOR

M2.2 MECHANICAL DEMOLITION PLAN - SECOND FLOOR

M2.3 MECHANICAL DEMOLITION PLAN - ROOF

M3.1 MECHANICAL NEW WORK PLAN - FIRST FLOOR

M3.2 MECHANICAL NEW WORK PLAN - SECOND FLOOR

M3.3 MECHANICAL NEW WORK PLAN - ROOF

M6.1 MECHANICAL HYDRONIC RISER DIAGRAMS

M7.1 MECHANICAL CONTROLS

M7.2 MECHANICAL CONTROLS

M7.3 MECHANICAL CONTROLS

M7.4 MECHANICAL CONTROLS

M8.1 MECHANICAL SCHEDULES

M9.1 MECHANICAL DETAILS

M9.2 MECHANICAL DETAILS

ELECTRICAL

E1.1 ELECTRICAL NOTES, SYMBOLS AND ABBREVIATIONS

E2.1 ELECTRICAL DEMOLITION PLAN - FIRST FLOOR

E2.3 ELECTRICAL DEMOLITION PLAN - ROOF

E3.1 ELECTRICAL POWER PLAN - FIRST FLOOR

E3.3 ELECTRICAL POWER PLAN - ROOF

NO. DESCRIPTION DATENO. DESCRIPTION DATE

11/13/2025

HVAC EQUIPMENT

AC AIR CONTROL

ACC AIR COOLED CHILLER

AP ACCESS PANEL

AHU AIR HANDLING UNIT

AS AIR SEPARATOR

B BOILER

BV BALANCING VALVE

CH CHILLER

CC DX COOLING COIL

CHP CHILLED WATER PUMP

CRU CONDENSATE RETURN UNIT

CT COOLING TOWER

CU CONDENSING UNIT

CV CONSTANT VOLUME TERMINAL UNIT

CWP CONDENSER WATER PUMP

DHP DUCT HEAT PIPE

EDH ELECTRIC DUCT HEATER

EF EXHAUST FAN

ESG ELECTRIC STEAM GENERATOR

ET EXPANSION TANK

FCU FAN COIL UNIT

FCV FLOW CONTROL VALVE

FF FILTER FEEDER

FH FUME HOOD

GEF GENERAL EXHAUST FAN

H HUMIDIFIER

HCU HUMIDITY CONTROL UNIT

HC HEATING COIL

HP HEAT PUMP

HRU HEAT RECOVERY UNIT

HWP HEATING WATER PUMP

KEF KITCHEN EXHAUST FAN

KH KITCHEN EXHAUST HOOD

KSF KITCHEN SUPPLY FAN

L LOUVER

MAU MAKE-UP AIR UNIT

MASF MAKE-UP AIR SUPPLY FAN

ML MIXING LATERAL

OAI OUTSIDE AIR INTAKE

OAU OUTSIDE AIR UNIT

OAF OUTSIDE AIR FAN

PCHP PRIMARY CHILLED WATER PUMP

PF PURGE FAN

PTHP PACKAGED TERMINAL HEAT PUMP

PTAC PACKAGED TERMINAL AIR CONDITIONING UNIT

PV PENTHOUSE VENTILATOR

RH RADIANT HEATER

RF RELIEF FAN

RPZ REDUCED PRESSURE BACK FLOW PREVENTER

RTU SINGLE PACKAGED (ROOFTOP) AIR CONDITIONING UNIT

SCHP SECONDARY CHILLED WATER PUMP

SEF SMOKE EVACUATION FAN

SF SUPPLY FAN

SPF SMOKE PURGE FAN

PACU PACKAGED AIR CONDITIONING UNIT

UH UNIT HEATER

V / VAV VARIABLE VOLUME AIR TERMINAL UNIT

WSHP WATER SOURCE HEAT PUMP

NOT ALL WILL

APPEAR ON

THE DRAWINGS

BDD BACKDRAFT DAMPER

ERU ENERGY RECOVERY UNIT

ERV ENERGY RECOVERY VENTILATOR

FFU FAN FILTER UNIT

IU VARIABLE REFRIGERANT FLOW INDOOR UNIT

OU VARIABLE REFRIGERANT FLOW OUTDOOR UNIT

LEF LAB EXHAUST FAN

MB MIXING BOX

SAF SUPPLY AIR FAN

VFD VARIABLE FREQUENCY DRIVE

RAF RETURN AIR FAN

T

SP

SPS

PM

SD

FSD

FD

DD

#H

CO2

CO

NOT ALL WILL

APPEAR ON

THE DRAWINGS

M

20x8 SA

BOTTOM CONNECTION (45° OR 90°)

CAPPED OUTLET (TOP CONNECTION)

GATE VALVE

BALANCING VALVE

BUTTERFLY VALVE

CHECK VALVE

STRAINER

BALL VALVE

DROP (OR RISE) IN PIPE

SIDE CONNECTION (TEE)

DN

SYMBOL

DIRECTION OF SLOPE (OR PITCH)

DIRECTION OF FLOW

UNION

PIPING

IDENTIFICATION SYMBOL IDENTIFICATION

SMOKE DAMPER

FIRE/SMOKE DAMPER

FIRE DAMPER

UP

MITERED ELBOW (NO TURNING VANES)

PRESSURE GAUGE

TRIPLE DUTY VALVE

THERMOWELL

DUCTWORK

HVAC SYMBOL SCHEDULE

MOTORIZED CONTROL DAMPER

SUPPLY DUCT DROP DOWN

RECTANGULAR DUCT; SIZE INDICATES INSIDE

FREE INSIDE AIRWAY WIDTH (SIDE SHOWN) X

DEPTH, TYPE

GENERAL

FLEXIBLE DUCT

MITERED ELBOW (WITH TURNING VANES)

TO EXISTING

HUMIDISTAT (#= ZONE CONTROLLED)

SMOKE DETECTOR

MANUAL VOLUME DAMPER

SPACE STATIC PRESSURE SENSOR

NEW POINT OF CONNECTION

RADIUS ELBOW

REMOVE BACK TO HERE

THERMOSTAT OR TEMP SENSOR

(#= ZONE CONTROLLED)

RETURN DUCT RISE UP

(4-WAY THROW U.N.O.)

SUPPLY AIR DIFFUSER (CEILING)

RETURN DUCT DROP DOWN

OR GRILLE (CEILING)

RETURN/EXHAUST AIR REGISTER

INCLINED RISE OR DROP

SUPPLY DUCT RISE UP

TOP CONNECTION (45° OR 90°)

2-WAY CONTROL VALVE

THERMOMETER

STEAM TRAP

ELL TURNED UP (RISER)

ELL TURNED DOWN

PLUG VALVE

3-WAY CONTROL VALVE

CARBON DIOXIDE SENSOR

(#= ZONE CONTROLLED)

ROOM PRESSURE MONITOR

DUCT STATIC PRESSURE SENSOR

CARBON MONOXIDE SENSOR

(#= ZONE CONTROLLED)

GAUGE TAP (PETE'S PLUG)

PRESSURE RELIEF VALVE

PRESSURE REDUCING VALVE

PUMP

16 RA

ROUND DUCT; SIZE INDICATES INSIDE FREE

INSIDE AIRWAY DIAMETER, TYPE

16x8 EA

OVAL DUCT; SIZE INDICATES INSIDE FREE INSIDE

AIRWAY WIDTH (SIDE SHOWN) X DEPTH, TYPE

EXHAUST DUCT RISE UP

EXHAUST DUCT DROP DOWN

CLEANOUT

AIR VENT

M

DRAIN

METER

AIRFLOW OUT

AIRFLOW IN

REDUCER

WALL MOUNTED SUPPLY REGISTER/GRILLE

WALL MOUNTED RETURN REGISTER/GRILLE

WALL MOUNTED EXHAUST REGISTER/GRILLE

DPT

WYE SPLIT FITTING

PIPE-MOUNTED DIFFERENTIAL

PRESSURE SENSOR~

EPO EMERGENCY POWER OFF

DUCT CONTINUATION

DUCT CROSSING (DASHED LINES CROSS UNDER)

PIPE CONTINUATION

Ø

Ø

GENERAL ABBREVIATIONS

ABV. ABOVE

LG. LONG/LENGTH

A.F.F. ABOVE FINISH FLOOR

MAT'L. MATERIAL

MFR. MANUFACTURER

ALUM. ALUMINUM

MAX. MAXIMUM

APPROX. APPROXIMATELY

MECH. MECHANICAL

ARCH. ARCHITECT/ARCHITECTURAL

MIN. MINIMUM

BD. BOARD

MISC. MISCELLANEOUS

B.O. BOTTOM OF MTD. MOUNTED

B.O.D. BOTTOM OF DUCT MTL. METAL

B.O.P. BOTTOM OF PIPE N.C. NORMALLY CLOSED

BLDG. BUILDING/BUILDINGS N.I.C. NOT IN CONTRACT

BMS BUILDING MANAGEMENT SYSTEM

NO. NUMBER

CLG. CEILING

N.O. NORMALLY OPEN

C.L. CENTERLINE

N.T.S. NOT TO SCALE

COL. COLUMN O.C. ON CENTER

CONC. CONCRETE

CV CONSTANT VOLUME

O.D. OUTSIDE DIAMETER

CONST. CONSTRUCTION

OPN'G. OPENING

CONT. CONTINUOUS

PL. PLATE

CORR. CORRIDOR

PL. PLATE

CSA COLD SUPPLY AIR

PVC POLYVINYLCHLORIDE

DEMO. DEMOLITION

RAD. RADIUS

DIA. DIAMETER

REINF. REINFORCE/REINFORCING

DIM. DIMENSION

REQ'D. REQUIRED

DDC DIRECT DIGITAL CONTROLS

RA RETURN AIR

DWG. DRAWING/DRAWINGS

DN. DOWN

RTU ROOFTOP UNIT

EA. EACH

SCHED. SCHEDULE

ELEC. ELECTRICAL

SECT. SECTION

ELEV. ELEVATION

SHT. SHEET

EQ. EQUAL

SIM. SIMILAR

EQUIP. EQUIPMENT

SPECS. SPECIFICATIONS

EXP. EXPANSION

STL. STEEL

EXIST. EXISTING

STRUCT. STRUCTURAL

EXH. EXHAUST

SA SUPPLY AIR

FOB FLAT ON BOTTOM

SUSP. SUSPENDED

FOT FLAT ON TOP

T.O. TOP OF

FT. FOOT/FEET

T.O.D. TOP OF DUCT

GA. GAUGE

T.O.P. TOP OF PIPE

GALV. GALVANIZED

TYP. TYPICAL

GYP. GYPSUM

U.N.O. UNLESS NOTED OTHERWISE

HT. HEIGHT

VAV VARIABLE AIR VOLUME

HORIZ. HORIZONTAL

VERT. VERTICAL

HSA HOT SUPPLY AIR

I.D. INSIDE DIAMETER

VRF VARIABLE REFRIGERANT FLOW

IN. INCH/INCHES

W/ WITH

W/O WITHOUT

BAS BUILDING AUTOMATION SYSTEM

OA OUTSIDE AIR

B.F. BELOW FLOOR

B.G. BELOW GRADE

U.G. UNDERGROUND

RLA RELIEF AIR

INSUL. INSULATE/INSULATION

AFMS AIR FLOW MEASURING STATION

(E) EXISTING TO REMAIN

HVAC PIPING

CHS CHILLED WATER SUPPLY

CHR CHILLED WATER RETURN

HWS HEATING WATER SUPPLY

HWR HEATING WATER RETURN

CWS CONDENSER WATER SUPPLY

CWR CONDENSER WATER RETURN

CWTT CONDENSER WATER TO TOWER

CWFT CONDENSER WATER FROM TOWER

G NATURAL GAS

CD CONDENSATE DRAIN

DCW DOMESTIC COLD WATER

HPS HIGH PRESSURE STEAM (>= 75 PSI)

MPS MEDIUM PRESSURE STEAM (16-75 PSI)

LPS LOW PRESSURE STEAM (<=15 PSI)

PCR PUMPED CONDENSATE RETURN

FIN FIN WATER CONDENSATE FROM COOLING COILS

CR STEAM CONDENSATE RETURN (GRAVITY)

LS LOOP SUPPLY

LR LOOP RETURN

RS REFRIGERANT SUCTION

RL REFRIGERANT LIQUID

R REFRIGERANT LINE SET

HG HOT GAS

NOT ALL WILL

APPEAR ON

THE DRAWINGS

P____ PRIMARY CHILLED/HEATING WATER (E.G. 'PCHS')

S____ SECONDARY CHILLED/HEATING WATER (E.G. 'SCHS')

PCD PUMPED CONDENSATE DRAIN

Revisions:

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Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

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10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL NOTES,

SYMBOLS AND

ABBREVIATIONS

M1.1

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1. VERIFY ALL DIMENSIONS AFFECTING EACH ITEM OF THE WORK.

2. FOR CLARITY PURPOSES, NOT ALL EQUIPMENT, DUCTWORK, PIPING, ETC. MAY

BE SHOWN IN EACH VIEW.

3. COORDINATE VERY CLOSELY WITH OTHER TRADES CONCERNING WORK ABOVE

CEILINGS, WORKING OUT CONFLICTS PRIOR TO INSTALLATION OF THE WORK.

4. SEAL PENETRATIONS OF FIRE AND/OR SMOKE RATED WALLS, FLOORS AND

PARTITIONS USING "UL" APPROVED SEALANT AND/OR METHODS.

5. DUCT SIZES SHOWN ON PLANS ARE INSIDE FREE AIRWAY DIMENSIONS IN

INCHES. THE FIRST FIGURE IN THE DUCT DIMENSION IS THE FACE SHOWN OR

INDICATED.

6. ANY WORK THAT WILL REQUIRE THE CONTRACTOR TO WORK OUTSIDE THE

CONSTRUCTION AREA SHALL BE COORDINATED WITH THE GENERAL

CONTRACTOR.

7. REFER TO GENERAL DRAWINGS/SPECIFICATIONS CONCERNING PHASING OF THE

CONSTRUCTION WORK.

8. MAINTAIN THE BUILDING IN A SAFE, WEATHERTIGHT CONDITION.

9. COORDINATE THE LOCATION OF ROOF & WALL PENETRATIONS WITH

STRUCTURAL ELEMENTS. PROVIDE AT NEW WALL PENETRATIONS SLEEVES 1"

LARGER IN DIAMETER THAN THE PIPE INSULATION & EXTENDING 1-1/2" BEYOND

FINISHED SURFACES. FILL ANNULAR SPACE WITH FIRESTOPPING INSULATION &

CAULK.

10. ALL HVAC SYSTEMS SHALL BE ENERGIZED, TESTED, ADJUSTED & BALANCED AS

SPECIFIED.

11. ROUTE PIPING TO UNITS TO AVOID CLEARANCE AREAS FOR ACCESS PANELS,

CONTROLS ENCLOSURES, ETC.

GENERAL NOTES

1. ALL CONSTRUCTION/DEMOLITION INDICATED ON THE DRAWINGS REFLECTS

ASSUMPTIONS CONCERNING EXISTING CONDITIONS BASED ON THE AVAILABLE

INFORMATION, VISITS TO THE JOB SITE, AND LOCATIONS/ARRANGEMENTS OF

EXISTING FACILITIES. IT SHALL BE INCUMBENT UPON EACH CONTRACTOR TO

VISIT THE SITE PRIOR TO BIDDING AND SATISFY THEMSELVES AS TO THE

EXISTING CONDITIONS.

2. ANY WORK THAT WILL REQUIRE THE CONTRACTOR TO WORK OUTSIDE THE

DEMOLITION/CONSTRUCTION AREA SHALL BE COORDINATED WITH THE GENERAL

CONTRACTOR.

3. REFER TO GENERAL DRAWINGS/SPECIFICATIONS CONCERNING PHASING OF THE

DEMOLITION & CONSTRUCTION WORK.

4. CUT & PATCH TO ACCOMMODATE THE WORK UNLESS NOTED OTHERWISE. ALL

OPENINGS IN EXISTING WALLS, CEILING, FLOORS, AND DUCTS RESULTING FROM

DEMOLITION WORK OR NEW WORK SHALL BE PATCHED TO MATCH EXISTING,

UNLESS NOTED OTHERWISE. ALL ROOF PENETRATIONS REMAINING AFTER

DEMOLITION SHALL BE TEMPORARILY SEALED WATERTIGHT BY THE MECHANICAL

CONTRACTOR AND PATCHED BY AN APPROVED ROOFING CONTRACTOR. ALL

ROOF PATCHING AND SEALING SHALL MAINTAIN THE ROOF WARRANTY (AS

APPLICABLE).

5. IF ANY ASBESTOS CONTAINING MATERIAL IS DISCOVERED OR SUSPECTED, THE

CONTRACTOR SHALL IMMEDIATELY CEASE ANY & ALL WORK IN THAT AREA.

COVER THE EXPOSED MATERIAL IN PLASTIC CONTAINMENT WITHOUT

DISTURBING THE EXPOSED MATERIAL & CONTACT THE ENGINEER.

6. FOR EQUIPMENT, DUCTWORK OR PIPING THAT IS INDICATED TO BE REMOVED,

THE RELATED SUPPORT APPARATUS SHALL ALSO BE REMOVED, UNLESS NOTED

OTHERWISE. THIS INCLUDES REMOVAL OF THE EQUIPMENT'S RELATED

CONCRETE HOUSEKEEPING PAD AND PATCHING THE CONCRETE FLOOR

SMOOTH TO MATCH THE EXISTING.

7. SALVAGED EQUIPMENT SHALL BE REMOVED TO A SITE OF THE OWNER'S

CHOOSING. DEMOLISHED EQUIPMENT THAT THE OWNER DOES NOT WANT TO

SALVAGE SHALL BE REMOVED FROM SITE BY THE CONTRACTOR.

GENERAL NOTES - RENOVATIONS

1. INTERNATIONAL BUILDING CODE (2021 EDITION) WITH ANY APPLICABLE LOCAL

AMENDMENTS.

2. INTERNATIONAL MECHANICAL CODE (2021 EDITION) WITH ANY APPLICABLE LOCAL

AMENDMENTS.

3. INTERNATIONAL PLUMBING CODE (2021 EDITION) WITH ANY APPLICABLE LOCAL

AMENDMENTS.

4. INTERNATIONAL FUEL GAS CODE (2021 EDITION) WITH ANY APPLICABLE LOCAL

AMENDMENTS.

5. INTERNATIONAL ENERGY CONSERVATION CODE (2021 EDITION) WITH ANY

APPLICABLE LOCAL AMENDMENTS.

6. ASHRAE 62.1-2022: VENTILATION STANDARD FOR ACCEPTABLE INDOOR AIR

QUALITY.

7. NFPA 101-2021: LIFE SAFETY CODE.

8. NFPA 90A-2021: STANDARD FOR INSTALLATION OF AIR-CONDITIONING AND

VENTILATING SYSTEMS.

9. NFPA 241: STANDARD FOR SAFEGUARDING CONSTRUCTION, ALTERATION, AND

DEMOLITION OPERATIONS (2022 EDITION).

CODE COMPLIANCE

NO. DESCRIPTION DATE

TRUE NORTH PLAN NORTH

N

N

1. REFER TO SHEET M1.1 FOR GENERAL MECHANICAL NOTES

THAT SHALL APPLY TO ALL SHEETS IN THIS SET UNLESS

NOTED OTHERWISE IN THE KEYED NOTES.

2. ALL EXISTING DUCTWORK, PIPING SIZES & LOCATIONS ARE

TAKEN FROM AVAILABLE RECORD DOCUMENTS & SITE

OBSERVATIONS. CONTRACTOR SHALL FIELD VERIFY ALL

EXISTING CONDITIONS PRIOR TO CONSTRUCTION.

3. WHERE WALL SENSORS ARE LOCATED NEAR LIGHT

SWITCHES, GROUP ALL BACKBOXES TOGETHER IN

ORDERLY FASHION WITH CONSISTENT SPACING

BETWEEN. COORDINATE WALL SENSOR LOCATIONS WITH

ARCHITECTURAL PLANS TO AVOID CASEWORK, WALL

PANELS, ETC. DO NOT INSTALL SENSORS BEHIND DOOR

SWINGS.

4. COORDINATE ALL PAINTING REQUIREMENTS FOR

EXPOSED ELEMENTS WITH DIV 23 SPECIFICATIONS AND

ARCHITECTURAL RCP SHEETS.

GENERAL NOTES

26x16 OA

14x12 EXH x1

E

X H

12x10 EXH 12x10 EXH

10x10 EXH 8x6 EXH

8x4 EXH x1

E

X H x1

E

X H x1

E

X H

14x10 EXH 12x10 EXH

10x6 EXH 8x5 EXH

4"CHR

4"CHS

UP TO FLOOR ABOVE

26x16 EXH

DN FROM FLOOR ABOVE

26x16 OA

M2.1 2 3

M2.1

C1707

C1705

C17N

C1704

C1706

C1709 C1711

C17W

C1710

C1713 C1715

C1718

C1720

C17C

C1717

C1719

C17

C1701

C1721

C17E

C1722

C1736

C1738

C1737

C1739

C1744

PUMP ROOM

C1112

MECH.

C1110 STAIR 2

C1735

C17S

C1740

C1741

C1742

C1743

C1731

C1732

C1733

C1730

C1702

C1703

STAIR 1

C1101

C1100

C11

ELEV. 1

C1102

IT

C1106

C1104

C1103

C1105

C1107

C1200

C12E

C1201

C1202

C1204

C1205

C1206

C1207

C1208

C1723

C1724

C1726

C1109

C1401

C1403

C1405

C14

C1408

C1406

C1404

C1402

C1400

C1203

C12S

C1115

C1700

ACC-1

EXISTING TO REMAIN

TO BE REMOVED

AHU-4

AHU-2

AHU-3

AHU-9

AHU-14 AHU-12 AHU-11

AHU-13 AHU-8

AHU-10

AHU-6

AHU-1

AHU-7 AHU-5

6 TYP

7 TYP

TYP

TYP

TYP

7TYP

1TYP

1TYP

1 TYP

MECH.

C1110

PUMP ROOM

C1112

C1737 C1738

STAIR 2

x1

O

A x1

S

A x1

S

A x1

S

A x1

S

A

18x12 SA

12x12 SA

12x12 SA

12x12 SA

14x10 SA

20x10 SA

30x16 SA x1

S

A x1

S

A x1

S

A

12x8 OA x1

O

A

26x16 OA

26x16 OA

14x12 OA

16x12 OA

12x10 OA

AHU-4

AHU-2

AHU-1

AHU-7

AHU-9

AHU-14

AHU-11

AHU-5

AHU-6

AHU-3

AHU-10

AHU-8

AHU-13

MECH.

C1110

PUMP ROOM

C1112

C1737 C1738

STAIR 2

C11

Revisions:

A u st in

S a n A n to n io

H o u st o n

B a rt o n

S p ri n g s

R o a d

S u it e

A u st in Te xa s

B ro a d w a y S u it e

S a n A n to n io

Te xa s

F a n n in

S tr e e t, S u it e

H o u st o n Te xa s p

.4

.7 f

.4

.7 p

.2

.6 f

.2

.6 p

.4

.1 f

.4

.1

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

C U s e rs

\s h y s ic k \D o c u m e n ts

\2 C

P A

C h ill e r

P la n t U p d a te

M

E P

C e n tr a l_ s h y s ic k S

K K

L .r v t

/1

/2

:4 :3

P

M

C P

A C

H

IL

L E

R P

L A

N T

U P

D A

T E

D

IS

C

O V

E R

Y B

O U

LE

V

A R

D C

E D

A R

P A

R K

TX

W

IL

LI

A

M S O

N C

O U

N

TY

10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL

DEMOLITION PLAN - FIRST

FLOOR

M2.1

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

KEYNOTE LEGEND - DEMO

1 PRIOR TO ANY DEMOLITION WORK, PRE-TAB AHU HW AND CHW

COILS TO REBALANCE POST CONSTRUCTION.

2 PRIOR TO ANY DEMOLITION WORK, PRE-TAB CHILLED WATER

AND HOT WATER PUMPS TO MATCH POST CONSTRUCTION.

3 DEMOLISH EXISTING CHILLED WATER AIR SEPARATOR AND

ASSOCIATED CHILLED WATER RPZ. HOLD EXISTING PIPING FOR

RECONNECTION TO NEW AIR SEPARATOR.

4 DEMOLISH EXISTING HOT WATER AIR SEPARATOR. HOLD

EXISTING PIPING FOR RECONNECTION TO NEW AIR

SEPARATOR.

5 DEMOLISH EXISTING CHILLED WATER AND HOT WATER

EXPANSION TANKS AND ALL ACCESSORIES ENTIRELY.

6 DEMOLISH ALL EXISTING INSULATION FROM PIPING AND

EQUIPMENT WITHIN PUMP ROOM. HOLD ALL PIPING FOR NEW

INSULATION.

7 DEMOLISH PIPING AS NECESSARY TO INSTALL BYPASS FOR

FLUSHING ON HW AND CHW PIPING UPSTREAM OF ISOLATION

VALVES. REFER TO EXISTING AHU COIL PIPING DETAIL. BYPASS

SHALL BE SAME PIPE DIAMETER AS HW/CHW SUPPLY AND

RETURN PIPING TO UNIT.

8 DEMOLISH EXISTING CHILLED WATER AND HOT WATER FILTER

FEEDERS AND ALL ACCESSORIES ENTIRELY.

9 DEMOLISH EXISTING HYDRONIC PUMP AND ALL ACCESSORIES

ENTIRELY. DEMOLISH EXISTING PUMP PAD. DEMOLISH

HYDRONIC PIPING FROM PUMP UP TO AND INCLUDING

ISOLATION VALVES. EXISTING VFDS FOR EACH PUMP SHALL

REMAIN FOR RECONNECTION.

SCALE: 1/8" = 1'-0"1

MECHANICAL DEMOLITION PLAN - LEVEL 1

SCALE: 1/8" = 1'-0"2

MECHANICAL PIPING

DEMOLITION PLAN -

LEVEL 1 - MECHANICAL

ROOM

SCALE: 1/8" = 1'-0"3

MECHANICAL

DUCTWORK DEMOLITION

PLAN - LEVEL 1 -

MECHANICAL ROOM

NOTE:

PRIOR TO WORK STARTING, CONTRACTOR SHALL PROVIDE A

PHASING PLAN TO THE ENGINEER. ON A LONG WEEKEND, (3) DAYS,

COMPLETELY DRAIN THE HYDRONIC SYSTEM; REPLACE ALL

ISOLATION VALVES SERVING THE PUMPS IN THE PUMP ROOM;

INSTALL BYPASSES ON ALL AHUS; FLUSH BOTH THE HW AND CHW

SYSTEM UTILIZING THE OLD PUMPS. ALL OTHER WORK MAY BE

COMPLETED OUTSIDE OF THIS (3) DAY SPAN.

N

1. REFER TO SHEET M1.1 FOR GENERAL MECHANICAL NOTES

THAT SHALL APPLY TO ALL SHEETS IN THIS SET UNLESS

NOTED OTHERWISE IN THE KEYED NOTES.

2. ALL EXISTING DUCTWORK, PIPING SIZES & LOCATIONS ARE

TAKEN FROM AVAILABLE RECORD DOCUMENTS & SITE

OBSERVATIONS. CONTRACTOR SHALL FIELD VERIFY ALL

EXISTING CONDITIONS PRIOR TO CONSTRUCTION.

3. WHERE WALL SENSORS ARE LOCATED NEAR LIGHT

SWITCHES, GROUP ALL BACKBOXES TOGETHER IN

ORDERLY FASHION WITH CONSISTENT SPACING

BETWEEN. COORDINATE WALL SENSOR LOCATIONS WITH

ARCHITECTURAL PLANS TO AVOID CASEWORK, WALL

PANELS, ETC. DO NOT INSTALL SENSORS BEHIND DOOR

SWINGS.

4. COORDINATE ALL PAINTING REQUIREMENTS FOR

EXPOSED ELEMENTS WITH DIV 23 SPECIFICATIONS AND

ARCHITECTURAL RCP SHEETS.

GENERAL NOTES

34x18 EXH

36x24 OA

14x10 EXH18x12 EXH 14x8 EXH x1

E

X H x1

O

A

UP FROM FLOOR BELOW

DN TO FLOOR BELOW

M2.2 2 3

M2.2

C2706

C2704

C2707

C2701

C2705

STAIR 1

C2104

C2106

C21E

C2105

C2103 C2601

BOILER RM.

C2107

C2200

C2201

C22

C2202

C2203

C2204

C2206

C2207

C2213

C2214

C2205

C2211

C2212

C2210

C2216

C2215

C2217

C2218

C2219

STAIR 2

C211S

MECH.

C2110

C211SW

C2602

C2603

C2513

C2512

C2511

C2510

C2503

C2502 C2501

C2505

C2506

C2507

C2504

C2515

C2607

C2605

C2604

C2703

C1210

C2600

C26N

C26E

C2101

ELEV 1

C21W

C21 x1

E

X H

EXISTING TO REMAIN

TO BE REMOVED

TYP

AHU-17

AHU-16

AHU-15

AHU-20 AHU-21

AHU-19

AHU-22 AHU-23 AHU-24

AHU-25

AHU-26

AHU-18

TYP

TYP

TYP

TYP

UP TO OAU-1

B-1

TYP

TYP

TYP

BOILER RM.

C2107

C2601

MECH.

C2110

C21E x1

S

A x1

S

A x1

S

A

18x12 SA

20x12 SA x1

S

A x1

S

A x1

S

A x1

S

A x1

S

A x1

S

A x1

O

A

26x12 SA

36x24 OA

B-1 AHU-15

AHU-17 AHU-16

AHU-20 AHU-21

20x14 OA32x18 OA

AHU-19 AHU-22 AHU-23 AHU-24

AHU-25

AHU-26

AHU-18

6x4 OA 12x10 OA

22x14 OA

C21E

BOILER RM.

C2107

C2601

MECH.

C2110

C211SW

C211S

C26E

Revisions:

A u st in

S a n A n to n io

H o u st o n

B a rt o n

S p ri n g s

R o a d

S u it e

A u st in Te xa s

B ro a d w a y S u it e

S a n A n to n io

Te xa s

F a n n in

S tr e e t, S u it e

H o u st o n Te xa s p

.4

.7 f

.4

.7 p

.2

.6 f

.2

.6 p

.4

.1 f

.4

.1

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

C U s e rs

\s h y s ic k \D o c u m e n ts

\2 C

P A

C h ill e r

P la n t U p d a te

M

E P

C e n tr a l_ s h y s ic k S

K K

L .r v t

/1

/2

:4 :3

P

M

C P

A C

H

IL

L E

R P

L A

N T

U P

D A

T E

D

IS

C

O V

E R

Y B

O U

LE

V

A R

D C

E D

A R

P A

R K

TX

W

IL

LI

A

M S O

N C

O U

N

TY

10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL

DEMOLITION PLAN -

SECOND FLOOR

M2.2

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

KEYNOTE LEGEND - DEMO

1 DEMOLISH ENOUGH PIPING FROM HYDRONIC BYPASS TO MAKE

ROOM FOR NEW HYDRONIC FLOW METER.

2 DEMOLISH PIPING AS NECESSARY TO INSTALL BYPASS FOR

FLUSHING ON HW AND CHW PIPING UPSTREAM OF ISOLATION

VALVES. REFER TO EXISTING AHU COIL PIPING DETAIL. BYPASS

SHALL BE SAME PIPE DIAMETER AS HW/CHW SUPPLY AND

RETURN PIPING TO UNIT.

3 PRIOR TO ANY DEMOLITION WORK, PRE-TAB AHU HW AND CHW

COILS TO REBALANCE POST CONSTRUCTION.

SCALE: 1/8" = 1'-0"1

MECHANICAL DEMOLITION PLAN - LEVEL 2

SCALE: 1/8" = 1'-0"2

MECHANICAL PIPING

DEMOLITION PLAN -

LEVEL 2 - MECHANICAL

ROOM

SCALE: 1/8" = 1'-0"3

MECHANICAL

DUCTWORK DEMOLITION

PLAN - LEVEL 2 -

MECHANICAL ROOM

NOTE:

PRIOR TO WORK STARTING, CONTRACTOR SHALL PROVIDE A

PHASING PLAN TO THE ENGINEER. ON A LONG WEEKEND, (3) DAYS,

COMPLETELY DRAIN THE HYDRONIC SYSTEM; REPLACE ALL

ISOLATION VALVES SERVING THE PUMPS IN THE PUMP ROOM;

INSTALL BYPASSES ON ALL AHUS; FLUSH BOTH THE HW AND CHW

SYSTEM UTILIZING THE OLD PUMPS. ALL OTHER WORK MAY BE

COMPLETED OUTSIDE OF THIS (3) DAY SPAN.

N

1. REFER TO SHEET M1.1 FOR GENERAL MECHANICAL NOTES

THAT SHALL APPLY TO ALL SHEETS IN THIS SET UNLESS

NOTED OTHERWISE IN THE KEYED NOTES.

2. ALL EXISTING DUCTWORK, PIPING SIZES & LOCATIONS ARE

TAKEN FROM AVAILABLE RECORD DOCUMENTS & SITE

OBSERVATIONS. CONTRACTOR SHALL FIELD VERIFY ALL

EXISTING CONDITIONS PRIOR TO CONSTRUCTION.

3. WHERE WALL SENSORS ARE LOCATED NEAR LIGHT

SWITCHES, GROUP ALL BACKBOXES TOGETHER IN

ORDERLY FASHION WITH CONSISTENT SPACING

BETWEEN. COORDINATE WALL SENSOR LOCATIONS WITH

ARCHITECTURAL PLANS TO AVOID CASEWORK, WALL

PANELS, ETC. DO NOT INSTALL SENSORS BEHIND DOOR

SWINGS.

4. COORDINATE ALL PAINTING REQUIREMENTS FOR

EXPOSED ELEMENTS WITH DIV 23 SPECIFICATIONS AND

ARCHITECTURAL RCP SHEETS.

GENERAL NOTES

OAU-1

2"CHS

2"CHR

1 1/4"HWS

1 1/4"HWR

EXISTING TO REMAIN

TO BE REMOVED

Revisions:

A u st in

S a n A n to n io

H o u st o n

B a rt o n

S p ri n g s

R o a d

S u it e

A u st in Te xa s

B ro a d w a y S u it e

S a n A n to n io

Te xa s

F a n n in

S tr e e t, S u it e

H o u st o n Te xa s p

.4

.7 f

.4

.7 p

.2

.6 f

.2

.6 p

.4

.1 f

.4

.1

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

C U s e rs

\s h y s ic k \D o c u m e n ts

\2 C

P A

C h ill e r

P la n t U p d a te

M

E P

C e n tr a l_ s h y s ic k S

K K

L .r v t

/1

/2

:4 :3

P

M

C P

A C

H

IL

L E

R P

L A

N T

U P

D A

T E

D

IS

C

O V

E R

Y B

O U

LE

V

A R

D C

E D

A R

P A

R K

TX

W

IL

LI

A

M S O

N C

O U

N

TY

10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL

DEMOLITION PLAN -

ROOF

M2.3

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

KEYNOTE LEGEND - DEMO

1 DEMOLISH OUTDOOR AIR UNIT AND ALL ACCESSORIES

ENTIRELY. DEMOLISH ALL CONDENSATE PIPING. DEMOLISH

CHILLED WATER AND HOT WATER PIPING BACK TO ROOF

PENETRATION AND HOLD FOR RECONNECTION TO NEW.

DEMOLISH CONTROL WIRING CONDUIT BACK TO ROOF

PENETRATION AND HOLD FOR RECONNECTION TO NEW.

EXISTING ROOF CURB TO REMAIN AND BE REUSED.

2 DISCONNECT EXISTING BOILER FLUE PIPING SUPPORTS FROM

AHU. TEMPORARILY SUPPORT BOILER FLUE UNTIL IT IS

RECONECTED TO NEW AHU.

SCALE: 1/8" = 1'-0"1

MECHANICAL DEMOLITION PLAN - ROOF

N

1. REFER TO SHEET M1.1 FOR GENERAL MECHANICAL NOTES

THAT SHALL APPLY TO ALL SHEETS IN THIS SET UNLESS

NOTED OTHERWISE IN THE KEYED NOTES.

2. ALL EXISTING DUCTWORK, PIPING SIZES & LOCATIONS ARE

TAKEN FROM AVAILABLE RECORD DOCUMENTS & SITE

OBSERVATIONS. CONTRACTOR SHALL FIELD VERIFY ALL

EXISTING CONDITIONS PRIOR TO CONSTRUCTION.

3. WHERE WALL SENSORS ARE LOCATED NEAR LIGHT

SWITCHES, GROUP ALL BACKBOXES TOGETHER IN

ORDERLY FASHION WITH CONSISTENT SPACING

BETWEEN. COORDINATE WALL SENSOR LOCATIONS WITH

ARCHITECTURAL PLANS TO AVOID CASEWORK, WALL

PANELS, ETC. DO NOT INSTALL SENSORS BEHIND DOOR

SWINGS.

4. COORDINATE ALL PAINTING REQUIREMENTS FOR

EXPOSED ELEMENTS WITH DIV 23 SPECIFICATIONS AND

ARCHITECTURAL RCP SHEETS.

GENERAL NOTES

x1

E

X H x1

E

X H x1

E

X H x1

O

A

26x16 OA

12x10 EXH14x10 EXH x1

E

X H

12x10 EXH12x10 EXH

14x12 EXH

4"CHR

4"CHS

UP TO FLOOR ABOVE

DN FROM FLOOR ABOVE

M3.1 2 3

M3.1

C1707

C1705

C17N

C1704

C1706

C1709 C1711

C17W

C1710

C1713 C1715

C1718

C1720

C17C

C1717

C1719

C17

C1701

C1721

C17E

C1722

C1736

C1738 C1737

C1739

C1744

PUMP ROOM

C1112

MECH.

C1110

STAIR 2

C1735

C17S

C1740

C1741

C1742

C1743

C1731

C1732

C1733

C1730

C1702

C1703

STAIR 1

C1101

C1100

C11

ELEV. 1

C1102

IT

C1106

C1104

C1103

C1105

C1107

C1200

C12E

C1201

C1202

C1204

C1205

C1206

C1207

C1208

C1723

C1724

C1726

C1109

C1401

C1403

C1405

C14

C1408

C1406

C1404

C1402

C1400

C1203

C12S

C1115

C1700

ACC-1

140 CFM

190 CFM

50 CFM

75 CFM190 CFM

110 CFM

100 CFM

330 CFM

330 CFM

40 CFM

450 CFM

45 CFM

80 CFM

130 CFM

NEW WORK

EXISTING TO REMAIN

3"HWR

2"HWR

4"CHR

TYP

3"HWS

4"CHR

4"CHS

AHU-4AHU-2

AHU-1

AHU-7

AHU-3 AHU-10

AHU-8AHU-13

AHU-9

AHU-14 AHU-12

AHU-11

AHU-5

AHU-6

TYP

TYP

TYP

TYP

TYP

TYP

TYP

TYP C1737

C1738

PUMP ROOM

C1112

MECH.

C1110

STAIR 2

C11

HWP-1

CHWP-2

CHWP-1

HWP-2

AS-1

AS-2

AHU-2

AHU-1

AHU-7

AHU-9

AHU-14

AHU-12

AHU-11

AHU-5

AHU-6

AHU-4

AHU-3 AHU-10

AHU-8AHU-13

x1

S

A x1

S

A x1

S

A x1

S

A x1

O

A

12x12 SA

12x12 SA

18x12 SA

30x16 SA

20x10 SA

14x10 SA

12x12 SA x1

S

A x1

S

A x1

S

A

STAIR 2

C11

MECH.

C1110

PUMP ROOM

C1112

C1737C1738

C

F M

C

F M

1,150 CFM

175 CFM

110 CFM

C

F M

325 CFM

150 CFM

Revisions:

A u st in

S a n A n to n io

H o u st o n

B a rt o n

S p ri n g s

R o a d

S u it e

A u st in Te xa s

B ro a d w a y S u it e

S a n A n to n io

Te xa s

F a n n in

S tr e e t, S u it e

H o u st o n Te xa s p

.4

.7 f

.4

.7 p

.2

.6 f

.2

.6 p

.4

.1 f

.4

.1

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

C U s e rs

\s h y s ic k \D o c u m e n ts

\2 C

P A

C h ill e r

P la n t U p d a te

M

E P

C e n tr a l_ s h y s ic k S

K K

L .r v t

/1

/2

:4 :3

P

M

C P

A C

H

IL

L E

R P

L A

N T

U P

D A

T E

D

IS

C

O V

E R

Y B

O U

LE

V

A R

D C

E D

A R

P A

R K

TX

W

IL

LI

A

M S O

N C

O U

N

TY

10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL NEW

WORK PLAN - FIRST

FLOOR

M3.1

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

KEYNOTE LEGEND

1 INSTALL NEW HYDRONIC PUMP ON NEW 6" TALL CONCRETE

PAD. CONNECT TO EXISTING VFD. INSTALL NEW ISOLATION

VALVE AND RECONNECT TO EXISTING HYDRONIC PIPING.

2 INSTALL NEW CHILLED WATER AIR SEPARATOR IN EXISTING

CHILLED WATER PIPING. INSTALL NEW RPZ MOUNTED IN

SAME LOCATION AS EXISTING.

3 INSTALL NEW HOT WATER AIR SEPARATOR IN EXISTING HOT

WATER PIPING.

4 INSTALL NEW EXPANSION TANK IN SAME LOCATION AS

PREVIOUS. EXPANSION TANKS SHALL HANG HORIZONTALLY

FROM ABOVE.

5 INSTALL NEW CHILLED WATER FILTER FEEDER ON NEW 6"

TALL CONCRETE PAD.

6 INSTALL NEW CHILLED WATER FILTER FEEDER ON NEW 6"

TALL CONCRETE PAD.

7 DRAIN AND FLUSH ENTIRE CHILLED WATER AND HOT WATER

PIPING SYSTEMS AS SPECIFIED.

8 INSTALL NEW INSULATION ON ALL PIPING AND EQUIPMENT

WITHIN PUMP ROOM AS SPECIFIED.

9 INSTALL NEW BYPASS ON CHW AND HW PIPING COILS

UPSTREAM OF THE ISOLATION VALVES. REFER TO EXISTING

AHU COIL PIPING DETAIL.

10 TAB TO MATCH PRE-TAB VALUES ON EXISTING HW AND CHW

COILS.

11 FURNISH AND INSTALL NEW CHILLED WATER RETURN FLOW

METER IN LOCATION INDICATED.

SCALE: 1/8" = 1'-0"1

MECHANICAL NEW WORK PLAN - LEVEL 1

SCALE: 1/8" = 1'-0"2

MECHANICAL PIPING

PLAN - LEVEL 1 -

MECHANICAL ROOM

SCALE: 1/8" = 1'-0"3

MECHANICAL

DUCTWORK PLAN -

LEVEL 1 - MECHANICAL

ROOM

N

1. REFER TO SHEET M1.1 FOR GENERAL MECHANICAL NOTES

THAT SHALL APPLY TO ALL SHEETS IN THIS SET UNLESS

NOTED OTHERWISE IN THE KEYED NOTES.

2. ALL EXISTING DUCTWORK, PIPING SIZES & LOCATIONS ARE

TAKEN FROM AVAILABLE RECORD DOCUMENTS & SITE

OBSERVATIONS. CONTRACTOR SHALL FIELD VERIFY ALL

EXISTING CONDITIONS PRIOR TO CONSTRUCTION.

3. WHERE WALL SENSORS ARE LOCATED NEAR LIGHT

SWITCHES, GROUP ALL BACKBOXES TOGETHER IN

ORDERLY FASHION WITH CONSISTENT SPACING

BETWEEN. COORDINATE WALL SENSOR LOCATIONS WITH

ARCHITECTURAL PLANS TO AVOID CASEWORK, WALL

PANELS, ETC. DO NOT INSTALL SENSORS BEHIND DOOR

SWINGS.

4. COORDINATE ALL PAINTING REQUIREMENTS FOR

EXPOSED ELEMENTS WITH DIV 23 SPECIFICATIONS AND

ARCHITECTURAL RCP SHEETS.

GENERAL NOTES

34x18 EXH

36x24 OA

14x10 EXH18x12 EXH 14x8 EXH x1

E

X H

B-1

UP FROM FLOOR BELOW

DN TO FLOOR BELOW

DD

DD

C2706

C2704

C2707

C2701

C2705

STAIR 1

C2104

C2106

C21E

C2105

C2103 C2601

BOILER RM.

C2107

C2200

C2201

C22

C2202

C2203

C2204

C2206

C2207

C2213

C2214

C2205

C2211

C2212

C2210

C2216

C2215

C2217

C2218

C2219

STAIR 2

C211S

MECH.

C2110

C211SW

C2602

C2603

C2513

C2512

C2511

C2510

C2503

C2502 C2501

C2505

C2506

C2507

C2504

C2515

C2607 2606C2605

C2604

C2703

C1210

C2600

C26N

C26E

C2101

ELEV 1

C21W

C21

M3.2 2 3

M3.2

300 CFM

300 CFM

65 CFM

55 CFM

860 CFM

180 CFM

60 CFM60 CFM

140 CFM

85 CFM

55 CFM

860 CFM

50 CFM

70 CFM

300 CFM

x1

E

X H

NEW WORK

EXISTING TO REMAIN

AHU-15

AHU-17

AHU-16

AHU-20 AHU-21

AHU-22

AHU-19

AHU-23 AHU-24

AHU-25

AHU-26

AHU-181

TYP

TYP

TYP

TYP

B-1

TYP

TYP

TYP

TYP

BOILER RM.

C2107

C2601

MECH.

C2110

C21E

B-1

AHU-17 AHU-16

AHU-21AHU-20

AHU-15

AHU-19 AHU-22 AHU-23 AHU-24

AHU-25

AHU-26

AHU-18BOILER RM.

C2107

C21E

MECH.

C2110

C2601

55 CFM

440 CFM

105 CFM

,0

C

F M

C

F M

1,000 CFM

385 CFM

Revisions:

A u st in

S a n A n to n io

H o u st o n

B a rt o n

S p ri n g s

R o a d

S u it e

A u st in Te xa s

B ro a d w a y S u it e

S a n A n to n io

Te xa s

F a n n in

S tr e e t, S u it e

H o u st o n Te xa s p

.4

.7 f

.4

.7 p

.2

.6 f

.2

.6 p

.4

.1 f

.4

.1

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

C U s e rs

\s h y s ic k \D o c u m e n ts

\2 C

P A

C h ill e r

P la n t U p d a te

M

E P

C e n tr a l_ s h y s ic k S

K K

L .r v t

/1

/2

:4 :3

P

M

C P

A C

H

IL

L E

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L A

N T

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D A

T E

D

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10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL NEW

WORK PLAN - SECOND

FLOOR

M3.2

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

KEYNOTE LEGEND

1 INSTALL NEW HYDRONIC FLOW METER IN EXISTING

HYDRONIC BYPASS PIPING.

2 INSTALL NEW DUCT DETECTOR IN EXISTING OAU

DUCTWORK. INSTALL IN LOCATION ABOVE ACCESSIBLE

CEILING. REMOVE AND PROTECT CEILING TILES AND GRID

AS NEEDED TO INSTALL DUCT DETECTORS. REINSTALL

CEILING GRID AND TILES AT COMPLETION OF WORK.

3 INSTALL NEW BYPASS ON CHW AND HW PIPING COILS

UPSTREAM OF THE ISOLATION VALVES. REFER TO EXISTING

AHU COIL PIPING DETAIL.

4 TAB TO MATCH PRE-TAB VALUES ON EXISTING HW AND CHW

COILS.

SCALE: 1/8" = 1'-0"1

MECHANICAL NEW WORK PLAN - LEVEL 2

SCALE: 1/8" = 1'-0"2

MECHANICAL PIPING

PLAN - LEVEL 2 -

MECHANICAL ROOM

SCALE: 1/8" = 1'-0"3

MECHANICAL

DUCTWORK PLAN -

LEVEL 2 - MECHANICAL

ROOM

N

1. REFER TO SHEET M1.1 FOR GENERAL MECHANICAL NOTES

THAT SHALL APPLY TO ALL SHEETS IN THIS SET UNLESS

NOTED OTHERWISE IN THE KEYED NOTES.

2. ALL EXISTING DUCTWORK, PIPING SIZES & LOCATIONS ARE

TAKEN FROM AVAILABLE RECORD DOCUMENTS & SITE

OBSERVATIONS. CONTRACTOR SHALL FIELD VERIFY ALL

EXISTING CONDITIONS PRIOR TO CONSTRUCTION.

3. WHERE WALL SENSORS ARE LOCATED NEAR LIGHT

SWITCHES, GROUP ALL BACKBOXES TOGETHER IN

ORDERLY FASHION WITH CONSISTENT SPACING

BETWEEN. COORDINATE WALL SENSOR LOCATIONS WITH

ARCHITECTURAL PLANS TO AVOID CASEWORK, WALL

PANELS, ETC. DO NOT INSTALL SENSORS BEHIND DOOR

SWINGS.

4. COORDINATE ALL PAINTING REQUIREMENTS FOR

EXPOSED ELEMENTS WITH DIV 23 SPECIFICATIONS AND

ARCHITECTURAL RCP SHEETS.

GENERAL NOTES

OAU-1

CD

2"CHS

2"CHR

1 1/4"HWS

1 1/4"HWR

NEW WORK

EXISTING TO REMAIN

Revisions:

A u st in

S a n A n to n io

H o u st o n

B a rt o n

S p ri n g s

R o a d

S u it e

A u st in Te xa s

B ro a d w a y S u it e

S a n A n to n io

Te xa s

F a n n in

S tr e e t, S u it e

H o u st o n Te xa s p

.4

.7 f

.4

.7 p

.2

.6 f

.2

.6 p

.4

.1 f

.4

.1

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

C U s e rs

\s h y s ic k \D o c u m e n ts

\2 C

P A

C h ill e r

P la n t U p d a te

M

E P

C e n tr a l_ s h y s ic k S

K K

L .r v t

/1

/2

:4 :3

P

M

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10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL NEW

WORK PLAN - ROOF

M3.3

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

O

'C O

N N

E

LL

R O

B E R

TS

O

N

IN

C

KEYNOTE LEGEND

1 INSTALL NEW OUTDOOR AIR UNIT ON EXISTING ROOF CURB.

2 RECONNECT EXISTING BOILER FLUE SUPPORTS TO OAU.

3 ROUTE NEW UNIT CONDENSATE PIPING, INSULATED AND

JACKETED AS SPECIFIED, TO NEAREST ROOF DRAIN. MATCH

UNIT DISCHARGE SIZE.

4 INSTALL NEW CHILLED WATER AND HOT WATER PIPING,

INSULATED, JACKETED, AND HEAT TRACED AS SPECIFIED,

FROM EXISTING PIPING TO NEW UNIT CONNECTIONS.

REPLACE TOP OF ROOF PIPE PENETRATION HOUSING

WEATHERTIGHT.

SCALE: 1/8" = 1'-0"1

MECHANICAL NEW WORK PLAN - ROOF

4" CHR

F F

4" CHS

CWP-1

CWP-2

A S

-1

ET-1

CH-1

FSAHU-11AHU-12

C H

S

C H

R

C H

S

C H

R

2-1/2" CHR

2-1/2" CHS

-1

/4

C H

S

-1

/4

C H

R

AHU-8AHU-5AHU-6

2" CHR

2" CHS

AHU-14AHU-9AHU-13AHU-7AHU-1

1-1/2" CHR

1-1/2" CHS

AHU-3AHU-2AHU-4AHU-10

3" CHS

3" CHR

C H

S

C H

R

3" CHS

3" CHR

LEVEL 1

LEVEL 2

AHU-24

ROOF

AHU-25

2" CHS

2" CHR

AHU-26AHU-21

1" CHS

1" CHR

AHU-18AHU-23AHU-22

1-1/4" CHS

1-1/4" CHR

3" CHS

3" CHR

AHU-19

3" CHS

3" CHR

2-1/2" CHS

2-1/2" CHR

2-1/2" CHS

2-1/2" CHR

2" CHS

2" CHR

AHU-15

2" CHS

2" CHR

AHU-17AHU-16

1-1/4" CHS

1-1/4" CHR

AHU-20

COIL

32.5 GPM

COIL

32.5 GPM

OAU-1

-1

/4

C H

S

-1

/4

C H

R

3/4" CHR

3/4" CHS

-1

/4

C H

S

-1

/4

C H

R

NOTE: REFER TO PRE-TAB

DOCUMENTATION FOR FLOW RATES

(GPM) OF EXISTING AIR HANDLING

UNIT COILS.

A S

-2

ET-2

HWP-2

HWP-1

3" HWR

3" HWS

AHU-11AHU-12

2-1/2" HWS

2-1/2" HWR

2-1/2" HWS

-1

/4

H W

S

-1

/4

H W

R

AHU-8AHU-5AHU-6

2" HWR

2" HWS

AHU-14AHU-9AHU-13AHU-7AHU-1

1-1/4" HWR

1-1/4" HWS

AHU-3AHU-2AHU-4AHU-10

2-1/2" HWS

3" HWR

-1

/2

H W

S

H W

R

2-1/2" HWS

2-1/2" HWR

LEVEL 1

LEVEL 2

AHU-24

ROOF

AHU-25

1-1/4" HWS

1-1/4" HWR

AHU-26AHU-21

3/4" HWS

3/4" HWR

AHU-18AHU-23AHU-22

1" HWS

1" HWR

2" HWS

2-1/2" HWR

AHU-19

2" HWS

2-1/2" HWR

2" HWS

3" HWR

1-1/4" HWS 1-1/4" HWR

2" HWS

3" HWR

AHU-15AHU-17AHU-16

1-1/4" HWS

1-1/4" HWR

AHU-20

COIL

10.3 GPM

COIL

10.3 GPM

OAU-1

H W

S

H W

R

1/2" HWR

1/2" HWS

-1

/4

H W

S

-1

/4

H W

R

NOTE: REFER TO PRE-TAB

DOCUMENTATION FOR FLOW RATES

(GPM) OF EXISTING AIR HANDLING

UNIT COILS.

FS

B-1

2-1/2" HWR

2-1/2" HWR

2-1/2" HWR

2-1/2" HWS

3" HWR

3" HWR

H W

R

-1

/2

H W

R

3" HWR

1" HWS

1" HWR

Revisions:

A u st in

S a n A n to n io

H o u st o n

B a rt o n

S p ri n g s

R o a d

S u it e

A u st in Te xa s

B ro a d w a y S u it e

S a n A n to n io

Te xa s

F a n n in

S tr e e t, S u it e

H o u st o n Te xa s p

.4

.7 f

.4

.7 p

.2

.6 f

.2

.6 p

.4

.1 f

.4

.1

Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

C U s e rs

\s h y s ic k \D o c u m e n ts

\2 C

P A

C h ill e r

P la n t U p d a te

M

E P

C e n tr a l_ s h y s ic k S

K K

L .r v t

/1

/2

:4 :3

P

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10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL

HYDRONIC RISER

DIAGRAMS

M6.1

O

'C O

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R O

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TS

O

N

IN

C

O

'C O

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R O

B E R

TS

O

N

IN

C

NOT TO SCALE1

CHILLED WATER RISER - AIR-COOLED CHILLER, VARIABLE PRIMARY PUMPING

NOT TO SCALE2

HEATING WATER RISER - BOILER, CONSTANT VOLUME PUMPING

NOTE: SAFETY DEVICES DIFFER PER AHU

FAN

MOTOR

MOTOR

OVERLOADS

NL

A

H

O

LOW

PRESS

SAFETY

HIGH

PRESS

SAFETY

FREEZE

STAT

FIRE

ALARM

DDC

START/

STOP

SAFETY RELAY BOARD (AHU'S)

WHERE EXISTING ALARM PRIORITIES ARE ESTABLISHED IN EXISTING BAS, MATCH EXISTING PRIORITIES AND OWNER PREFERENCES FOR

NEW ALARMS. WHERE ALARMS ARE NOT ALREADY IDENTIFIED, THIS SECTION COVERS ALL GENERAL ALARMS.

THIS SECTION COVERS ALL GENERAL ALARMS NOT SPECIFICALLY REFERENCED IN EACH INDIVIDUAL SEQUENCE, AS WELL AS

REQUIREMENTS FOR ALL ALARMS.

• ALL ALARMS SHALL INCLUDE A TIME/DATE STAMP USING THE STANDALONE CONTROL MODULE TIME AND DATE.

• EACH ALARM SHALL BE CONFIGURED IN TERMS OF LEVEL, LATCHING, ENTRY DELAY, EXIT DEADBAND, AND POSTSUPPRESSION

PERIOD

• AN OPERATOR SHALL BE ABLE TO SORT ALARMS BASED ON LEVEL, TIME/DATE, AND CURRENT STATUS

• ALARMS SHALL BE REPORTED WITH THE FOLLOWING INFORMATION, AT A MINIMUM:

1. DATE AND TIME OF THE ALARM

2. LEVEL OF THE ALARM

3. DESCRIPTION OF THE ALARM

4. EQUIPMENT TAGS FOR THE UNITS IN ALARM

THERE SHALL BE FOUR LEVELS OF ALARM:

• LEVEL 1 - LIFE-SAFETY MESSAGE

• LEVEL 2 - CRITICAL EQUIPMENT MESSAGE

• LEVEL 3 - URGENT MESSAGE

• LEVEL 4 - NORMAL MESSAGE

MAINTENANCE MODE: OPERATORS SHALL HAVE THE ABILITY TO PUT ANY DEVICE (E.G. AHU) IN/OUT OF MAINTENANCE MODE. ALL ALARMS ASSOCIATED WITH A DEVICE IN MAINTENANCE MODE WILL BE SUPPRESSED *EXCEPT* FOR LIFE-SAFETY ALARMS. IF A DEVICE IS IN MAINTENANCE MODE, ISSUE A DAILY LEVEL 3 ALARM AT A SCHEDULED TIME (DEFAULT: 08:00, TO BE CONFIRMED WITH OWNER)

INDICATING THAT THE DEVICE IS STILL IN MAINTENANCE MODE.

ENTRY DELAYS: ALL ALARMS SHALL HAVE AN ADJUSTABLE DELAY TIME SUCH THAT THE ALARM IS NOT TRIGGERED UNLESS THE ALARM CONDITION IS 'TRUE' FOR THE DELAY TIME. DEFAULT ENTRY DELAYS SHALL BE AS FOLLOWS;

• LEVEL 1 ALARMS: 1 SECOND

• LEVEL 2 ALARMS: 10 SECONDS

• LEVEL 3 ALARMS: 1 MINUTE

• LEVEL 4 ALARMS: 5 MINUTES

EXIT HYSTERESIS: EACH ALARM SHALL HAVE AN ADJUSTABLE TIME-BASED HYSTERESIS (DEFAULT: 5 SECONDS) TO EXIT THE ALARM.

ONCE SET, THE ALARM DOES NOT RETURN TO NORMAL UNTIL THE ALARM CONDITIONS HAVE CEASED FOR THE DURATION OF THE HYSTERESIS. EACH ANALOG ALARM SHALL HAVE AN ADJUSTABLE PERCENT-OF-LIMIT-BASED HYSTERESIS (DEFAULT: 0% OF THE ALARM THRESHOLD, I.E., NO HYSTERESIS; ALARM EXITS AT THE SAME VALUE AS THE ALARM THRESHOLD) THE ALARMED VARIABLE REQUIRED TO EXIT THE ALARM. ALARM CONDITIONS HAVE CEASED WHEN THE ALARMED VARIABLE IS BELOW THE TRIGGERING THRESHOLD BY THE

AMOUNT OF THE HYSTERESIS.

EXAMPLE OF EXIT HYSTERESIS

IF A HIGH-TEMPERATURE ALARM IS TRIGGERED AT 100°F AND HAS AN EXIT HYSTERESIS OF 5% FOR 1 MINUTE, THE ALARM WILL REMAIN ACTIVE UNTIL THE ALARMED TEMPERATURE DROPS BELOW 95°F (100°F MINUS 5%) CONTINUOUSLY FOR 1 MINUTE.

LATCHING: ANY ALARM CAN BE CONFIGURED AS LATCHING OR NONLATCHING. A LATCHING ALARM REQUIRES ACKNOWLEDGMENT FROM THE OPERATORS BEFORE IT CAN RETURN TO NORMAL, EVEN IF THE EXIT DEADBAND HAS BEEN MET. A NONLATCHING ALARM DOES NOT

REQUIRE ACKNOWLEDGMENT. DEFAULT LATCHING STATUS IS AS FOLLOWS:

• LEVEL 1 & 2 ALARMS: LATCHING

• LEVEL 3 & 4 ALARMS: NON-LATCHING

POSTEXIT SUPPRESSION PERIOD: TO LIMIT ALARMS, ANY ALARM MAY HAVE AN ADJUSTABLE SUPPRESSION PERIOD SUCH THAT, IF THE ALARM IS TRIGGERED, ITS POSTSUPPRESSION TIMER IS TRIGGERED AND THE ALARM MAY NOT TRIGGER AGAIN UNTIL THE

POSTSUPPRESSION TIMER HAS EXPIRED. DEFAULT SUPPRESSION PERIODS ARE AS FOLLOWS:

• LEVEL 1 ALARMS: 0 MINUTES

• LEVEL 2 ALARMS: 5 MINUTES

• LEVEL 3 ALARMS: 24 HOURS

• LEVEL 4 ALARMS: 7 DAYS

ALARMS

T

H L

DPT

H

T

DSD

T

ES

CS

DO

DI AI

AO

FM

DA

FS

T H

SPS

CO2

FS

CO2

H L

F

IL

T E

R

AFMS

OS

CONTROLS SYMBOLS LEGEND

MOTOR

END SWITCH

DIGITAL OUTPUT - START/STOP

HOUSED FAN

CURRENT SWITCH

DIGITAL INPUT ANALOG INPUT

ANALOG OUTPUT

PUMP

FLOW METER

FLOW SWITCH

DIFFERENTIAL PRESSURE

TRANSDUCER WITH HIGH

AND LOW PRESSURE

PORTS

HYDRONIC TEMPERATURE

SENSOR WITH

THERMOWELL

(SIZE TO CENTER OF PIPE)

PLENUM / PLUG FAN

AVERAGING DUCT

MOUNT

TEMPERATURE SENSOR

DUCT MOUNT

TEMPERATURE

PROBE (SIZE TO CENTER OF

DUCT/AIRSTREAM)

DUCT MOUNT

HUMIDITY

SENSOR

MOTORIZED DAMPER ACTUATOR

SPACE TEMPERATURE SENSOR SPACE HUMIDITY SENSOR

STARTER

LOW VOLTAGE OR

CONTROLS

WIRING

WIRING BY OTHERS

(HIGH VOLTAGE OR FIRE

ALARM)

BAS COMM WIRING

ROOF MOUNTED EXHAUST FAN

ELECTRIC STRIP HEATER

DUCT MOUNT CO2 SENSOR

COMBINATION STARTER/VFD

SPACE CO2 SENSOR

GAS FIRED HEATER

FLOAT SWITCH

STATIC PRESSURE

SENSOR (DUCT OR

SPACE)

COMPRESSOR

REVERSING VALVE

LOW LIMIT SWITCH WITH

NORMALLY OPEN AND

CLOSED

CONTACTS

SINGLE BLADE DAMPER

AXIAL FAN

POLY OR COPPER TUBING

FOR PRESSURE SENSORS

GAUGE PRESSURE SENSOR

AIR FLOW MEASURING STATION

ANALOG PRESSURE GAUGE

AVERAGING FLOW

RING WITH HIGH AND

LOW PICKUPS

FILTER

DUAL POLE HIGH/LOW

PRESSURE SAFETY

SWITCH

(NO & NC)

CHILLED (CHW), HOT (HW),

OR PREHEAT WATER

(PHW)

COIL

DIRECT EXPANSION

COOLING OR HOT GAS

REHEAT COIL

OPPOSED BLADE DAMPER

BACK DRAFT DAMPER

(BAROMETRICALLY

CONTROLLED)

AVERAGING FLOW

CROSS WITH HIGH AND

LOW PICKUPS

DUCT SMOKE DETECTOR

SPACE OCCUPANCY SENSOR

PUSH

BUTTON

OVERRIDE

HW

COIL

DX

OR

HGRH

COIL

DI

T

CO2

T

H L

DPT

FM

DA

T

OS

SPS

AO

AI

DSD

T

H

AFMS

H L

F

IL

T E

R

FS

CS

H

CO2

DO

P

TWO WAY CONTROL VALVETHREE WAY CONTROL VALVE

HEAT/ENERGY

TRANSFER

MATERIAL

LC

LIGHTING CONTROL PANEL

B-ASC

IP (ETHERNET)

COMMUNICATION

WEB-ACCESSIBLE

INTERFACE

IT NETWORK

B-ASC

B-ASC

B-CAC

BACNET

BUILDING

CONTROLLER

(B-BC)

1. PROVIDE NEW BACNET CONTROLLERS AND DEVICES FOR ALL EQUIPMENT AT FIELD

LEVEL, AUTOMATION LEVEL AND MANAGEMENT LEVEL AS SPECIFIED.

2. CONTRACTOR SHALL COORDINATE WITH OWNER'S IT STAFF TO PROVIDE ETHERNET

NETWORK CONNECTIONS.

BACNET SYSTEM ARCHITECTURE

B-CAC

B-ASC

B-ASC

B-ASC

CONTROLS WORK GENERAL NOTES

1. EXPAND EXISTING AUTOMATED LOGIC BUILDING AUTOMATION SYSTEM AS SPECIFIED IN

SECTION 23 09 23. MEET ALL OWNER'S STANDARDS & REQUIREMENTS AS APPLICABLE.

2. FOR THE PURPOSES OF THESE CONTROLS DRAWINGS AND THE BAS SPECIFICATION,

"BUILDING AUTOMATION SYSTEM" (BAS), "BUILDING MANAGEMENT SYSTEM" (BMS), AND

"ENERGY MANAGEMENT CONTROL SYSTEM" (EMCS) SHALL BE SYNONYMOUS.

3. ALL FINAL IT NETWORK TERMINATIONS SHALL BE COORDINATED WITH THE OWNER.

4. ELECTRICAL TRADE SHALL PROVIDE 120V POWER FOR THE BUILDING CONTROLLER(S).

THE CONTROLS INSTALLING CONTRACTOR (CIC) SHALL COORDINATE WITH THE GENERAL

CONTRACTOR AS NEEDED.

5. ALL ROOM INFORMATION ON THE GRAPHICAL FRONT-END SHALL MATCH FINAL ROOM

NAME AND NUMBER DESIGNATIONS; COORDINATE WITH OWNER AND ARCHITECT.

6. ALL SCHEDULES, SETPOINTS, LIMITS, AND CONTROL POINTS SHALL BE ADJUSTABLE BY

THE OWNER AT THE FRONT-END REGARDLESS OF INDICATION IN THE DRAWINGS AND

SPECIFICATIONS.

7. IT SHALL BE THE RESPONSIBILITY OF THE PRIME CONTRACTOR TO ENSURE THE

COORDINATION OF PROPER DECOMMISSIONING AND DISCONNECTION/REMOVAL OF OLD

CONTROL SYSTEM COMPONENTS THAT WILL NOT BE REUSED. OLD DATABASE GRAPHICS

AND SEQUENCES OF OPERATION SHALL BE CLEANED UP, OLD CONDUIT AND WIRING

REMOVED, OLD DEVICES AND CONTROLLERS SALVAGED AND RETURNED TO THE OWNER

IN A TIMELY MANNER. ANY CONTROLLERS AND/OR FIELD DEVICES DAMAGED OR LOST

DURING THE REMOVAL PROCESS SHALL BE REPAIRED AND/OR REPLACED AT NO COST TO

THE OWNER.

MS/TP

COMMUNICATION

OUTSIDE AIR TEMPERATURE/HUMIDITY SENSOR:

DEMOLISH EXISTING OUTDOOR AIR TEMPERATURE AND HUMIDITY SENSORS. FURNISH AND INSTALL ONE OUTSIDE AIR TEMPERATURE & HUMIDITY SENSOR WITH WEATHER SHADE ACCESSORY IN SAME LOCATION AS EXISTING.

BMS WATER METER:

FURNISH AND INSTALL METER ON CHILLED WATER MAKE UP WATER LINE EQUAL TO BADGER RECORDALL TURBO SERIES METER (SIZED TO MATCH LINE SIZE) WITH HR-LCD REGISTER/TRANSMITTER WITH LCD DISPLAY (ORDER CABLE LENGTH AS NECESSARY TO TIE METER INTO BMS); METER MUST BE NSF 61 COMPLIANT FOR LOW LEAD CONTENT FOR DOMESTIC WATER USE. TREND TOTAL

WATER CONSUMPTION AND LOCATE ON ENERGY DASHBOARD GRAPHICS PAGE FOR BUILDING.

MISC CONTROLS AND SEQUENCES OF OPERATION

BMS WATER METER

WM

OUTSIDE AIR

TEMP/HUMIDITY

EQUAL TO VAISALA HMS110

COMBINATION TEMP/HUMIDITY

SENSOR WITH WEATHERHOOD

AI

AI AI

HT

BAS INPUT/OUTPUT SUMMARY

NOTES

OUTSIDE AIR TEMPERATURE

DDC

COMM

CARD

CALC-

ULATED

ANALOG

OUTPUT

(AO)

DIGITAL

OUTPUT

(DO)

ANALOG

INPUT

(AI) TREND ALARM

X

BMS WATER METER (CONSUMPTION) X

METER CONSUMPTION SHALL BE DISPLAYED AT AN ENERGY DASHBOARD IN THE BAS FRONT-END.1.

NOTES

OUTSIDE AIR TEMPERATURE AND HUMIDITY

SYSTEM/EQUIPMENT

X

DIGITAL

INPUT

(DI)

MISCELLANEOUS METERS AND SENSORS

OUTSIDE AIR HUMIDITY X X

X

OUTSIDE AIR DEW POINT X X

1. REFER TO APPENDIX 4.2 IN SPECIFICATION SECTION 23 09 23

BAS FOR HVAC FOR REVISIONS REQUIRED FOR THE GRAPHICAL

FLOOR PLANS. CIC SHALL REVISE FRONT END GRAPHICS TO

INCLUDE ROOM AREAS AND ROOM NUMBERS SHOWN IN

APPENDIX.

2. REVISE "AHU-3 CID" TO READ "AHU-3 TAX OFFICE"

3. REVISE "AHU-4 PATROL ROOM" TO READ "AHU-4 TAX OFFICE"

1. REFER TO APPENDIX 4.2 IN SPECIFICATION SECTION 23 09 23

BAS FOR HVAC FOR REVISIONS REQUIRED FOR THE GRAPHICAL

FLOOR PLANS. CIC SHALL REVISE FRONT END GRAPHICS TO

INCLUDE ROOM AREAS AND ROOM NUMBERS SHOWN IN

APPENDIX.

2. REVISE "AHU-18 PARKS DEPT" TO "AHU-18 JP OFFICE"

Revisions:

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Engineering Firm:

O'CONNELL ROBERTSON

Firm Registration No. F-2708

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10/30/25 Project No. 2515.00

CONTRACT DOCUMENTS

MECHANICAL

CONTROLS

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NOT TO SCALE5

BAS 1ST FLOOR GRAPHICS REVISIONS

NOT TO SCALE6

BAS 2ND FLOOR GRAPHICS REVISIONS

GENERAL:

THE EXISTING TO REMAIN AIR COOLED CHILLER IS ALREADY ON ALC CONTROLS. ALL EXISTING CHILLED WATER LOOP CONTROL POINTS AND ALARMS SHALL REMAIN U.N.O. TWO VFDS FOR THE CHILLED WATER PUMPS ARE ALSO EXISTING TO REMAIN BUT MUST BE INTEGRATED INTO THE EXISTING CONTROL SYSTEM. CONTROLS INSTALLING CONTRACTOR SHALL REPLACE EXISTING CHILLED WATER LOOP TEMPERATURE SENSORS, HYDRONIC DIFFERENTIAL PRESSURE TRANSDUCER, AND CHILLED WATER BYPASS CONTROL VALVE. CIC SHALL FURNISH AND INSTALL NEW FLOW METERS AND CURRENT SENSORS.

PLANT ENABLE/DISABLE:

THE CALLS FOR COOLING SHALL BE COMMUNICATED TO THE CHILLED WATER PLANT BY THE BAS. ENABLE PLANT WHEN THE NUMBER OF UNITS CALLING FOR COOLING IS EQUAL TO OR ABOVE THE ENABLE THRESHOLD OF 1 UNIT (ADJ.). DISABLE PLANT WHEN THE NUMBER OF UNITS IS EQUAL TO OR BELOW THE DISABLE THRESHOLD OF 0 UNITS (ADJ.). PROVIDE MINIMUM OFF/ON TIMES DELAYS TO PREVENT THE PLANT FROM SHORT CYCLING.

PLANT STARTUP:

ON A CALL TO ENABLE THE CHILLED WATER PLANT, ENERGIZE THE LEAD PUMP. UPON A 1 MINUTE TIME DELAY (ADJ.), ENABLE THE BOILER.

PUMP CONTROL:

THE CHILLED WATER PUMPS SHALL BE OPERATED IN A LEAD/STANDBY CONFIGURATION. THE LEAD/STANDBY SEQUENCE DESIGNATIONS SHALL BE ROTATED ON A WEEKLY BASIS TO EQUALIZE RUN-TIME HOURS ACROSS ALL PUMPS.

USING A PI-LOOP, THE PUMP SPEEDS SHALL BE MODULATED TO MAINTAIN THE REMOTE DP SETPOINT (ADJ). THE SET POINT SHALL BE INITIALLY DETERMINED BY TEST AND BALANCE AND RESET BY CONTINUOUS POLLING OF THE CHILLED WATER VALVES

ASSOCIATED WITH THE PLANT ACCORDING TO THE FOLLOWING:

INITIAL (STARTUP SET POINT) DETERMINED BY TAB

MINIMUM SET POINT 10.0 PSI

MAXIMUM SET POINT 25.0 PSI

INCREASE THRESHOLD MOST OPEN VALVE POSITION < 85% (ADJ.) FOR 5 MINUTES (ADJ.)

DECREASE THRESHOLD MOST OPEN VALVE POSITION > 95% (ADJ.) FOR 5 MINUTES (ADJ.)

INCREASE AMOUNT 1.0 PSI

DECREASE AMOUNT 0.5 PSI

INTERVAL 5 MINUTES

THE SET POINT SHALL BE OVERRIDDEN TO THE INITAL/STARTUP VALUE DETERMINED BY TAB IF A COMMUNICATION ISSUE IS DETECTED.

IF A PUMP HAS A FAILURE (BASED ON CONDITIONS OF PUMP COMMANDED TO BE ENABLED AND STATUS = OFF FOR 30 SECONDS, ADJUSTABLE), LEAD/STANDBY DESIGNATION SHALL ROTATE TO THE NEXT PUMP. FAILED PUMP SHALL DISABLE AND LABEL AS 'FAILURE' AT THE FRONT END. UPON LEAD/STANDBY RUNTIME ROTATION, FAILED PUMP LOCKOUT SHALL BE CLEARED AND PROGRAM SHALL ROTATE LEAD/STANDBY DESIGNATION. RUNTIME ROTATION SHALL ONLY OCCUR WHEN PLANT IS DISABLED.

CHILLED WATER BYPASS VALVE:

THE CHILLED WATER RETURN…