25388-CBI 100% CD w Add1.pdf

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DATE: ISSUED FOR:

SHEET NUMBER:

March 06, 2026 - 4:11:54pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

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DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

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12/29/2025

25-388

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11/14/2025 SCHEMATIC DESIGN

SHEET LEGEND

T1-1 TITLE SHEET

M0-1 COVER SHEET

ME1-1 MECHANICAL - EXISTING - FLOOR PLAN

ME1-2 MECHANICAL - EXISTING - VAV PLAN

ME1-3 MECHANICAL - EXISTING - ROOF PLAN

ME2-1 MECHANICAL - EXISTING - VAV SCHEDULES

ME2-2 MECHANICAL - EXISTING - VAV SCHEDULES

M1-2 MECHANICAL - NEW ROOF PLAN

M3-1 MECHANICAL - SCHEDULES AND DETAILS

M3-2 MECHANICAL - BOILER SCHEMATIC

M4-1 MECHANICAL - CONTROLS DIAGRAMS

M4-2 MECHANICAL - CONTROLS DIAGRAMS

E0-1 ELECTRICAL COVER SHEET

EE1-1 LIGHTING - EXISTING - AREA 1 FLOOR PLAN

EE1-2 LIGHTING - EXISTING - AREA 2 FLOOR PLAN

EE1-3 LIGHTING - EXISTING - AREA 3 FLOOR PLAN

E1-1 LIGHTING - AREA 1 FLOOR PLAN

E1-2 LIGHTING - AREA 2 FLOOR PLAN

E1-3 LIGHTING - AREA 3 FLOOR PLAN

E3-1 LIGHTING - FIXTURE SCHEDULES AND DETAILS

ES1-1 LIGHTING - SITE PLAN

ES1-2 LIGHTING - IES PLANS

ES2-1 LIGHTING - SITE DETAILS AND SCHEDULES

ES2-2 LIGHTING - SITE DETAILS AND SCHEDULES

CODE NOTES:

1. APPLICABLE CODES INCLUDE THE 2024 VERSIONS OF THE IBC, IMC, IECC, IPC, IFGC AND THE 2023 VERSION OF THE NEC.

2. THE BUILDING IS CLASSIFIED AS A "B" OCCUPANCY.

3. TOTAL BUILDING AREA IS 38,794 FT2 (FROM THE ORIGINAL CONSTRUCTION DRAWINGS).

4. THE BUILDING IS ASSUMED TO BE CONSTRUCTION TYPE II-B (FROM THE ORIGINAL CONSTRUCTION DOCUMENTS).

5. THE BUILDING IS FULLY SPRINKLED THROUGHOUT AND HAS A FIRE ALARM SYSTEM.

6. THE BUILDING HAS SECURE ACCESS AND IS MANNED 24/7 BY OPERATING PERSONNEL.

7. THIS PROJECT MAY AFFECT THE EXISTING ACCESS/EGRESS FOR THE BUILDING.

GENERAL CONSTRUCTION NOTES:

1. THE SCOPE OF WORK FOR THIS PROJECT WILL INVOLVE THE REPLACEMENT OF ROOFTOP VAV AIR HANDLING UNITS, HVAC CONTROLS, LIGHTING, BOILERS, AND SHOOTING RANGE VENTILATION EQUIPMENT.

2. DEMOLITION INCLUDES THE REMOVAL OF THE EXISTING ROOFTOP UNITS, CONTROLS, AND LIGHTING. THERE WILL BE SELECTIVE CUTTING AND PATCHING REQUIRED AS PART OF THIS PROJECT. REMOVE ALL OLD / ABANDONED EQUIPMENT AND CONTROLS AS NOTED. PATCH TO MATCH

EXISTING.

3. COORDINATE STAGING AREA FOR CONSTRUCTION WITH THE OWNER.

4. THE CONTRACTOR WILL BE RESPONSIBLE FOR ALL WASTE DISPOSAL FOR THIS PROJECT. COORDINATE THE LOCATION OF WASTE DUMPSTERS

WITH THE OWNER.

5. THE CONTRACTOR IS TO VERIFY ALL DIMENSIONS AND ACCESS REQUIREMENTS FOR ALL NEW EQUIPMENT PRIOR TO ORDERING MATERIAL.

SCOPE OF NEW WORK:

1. THE WORK WILL INVOLVE THE FOLLOWING:

1.1. REMOVAL OF THREE TRANE INTELLIPAK ROOFTOP UNITS AND REPLACEMENT WITH THREE AAON GAS FIRED VAV PACKAGED ROOFTOP UNITS.

1.2. ROUTING OF MEDIUM PRESSURE (2PSI) GAS PIPING FROM THE EXISTING GAS METER LOCATION TO THE NEW GAS FIRED PACKAGED RTUS.

1.3. REMOVAL OF THREE P-K THERMIFIC BOILERS AND REPLACEMENT WITH THREE LOCHINVAR CREST HELLCAT BOILERS ALONG WITH NEW BOILER

CIRCULATION PUMPS.

1.4. REMOVAL OF TWO SHOOTING RANGE ROOF-MOUNTED EXHAUST FANS AND TWO GAS-FIRED MAKEUP AIR UNITS AND REPLACEMENT WITH NEW

UNITS. REPLACEMENT OF FANS WILL INCLUDE REPLACEMENT OF EXHAUST FILTRATION SYSTEM

1.5. REMOVAL OF THE EXISTING TRANE TRACER SC+ BUILDING AUTOMATION SYSTEM (BAS) AND REPLACEMENT WITH A NEW ALERTON COMPASS 2

BAS INCLUDING NEW DISTRIBUTED CONTROLLERS. THIS WILL INCLUDE REMOVAL OF ALL UNITARY CONTROLS ON THE EXISTING PHOENIX AND TRANE VAV BOXES AND REPLACEMENT WITH ALERTON UNITARY CONTROLS, REMOVAL OF ALL EXISTING SENSORS AND CONTROLLED DEVICES (e.g. VAV DAMPER) AND REPLACEMENT WITH NEW. THE NEW SYSTEM WILL PROVIDE CONTROL LOOPS, SEQUENCES, AND POINTS LIST DATA AS

LISTED IN THE CONSTRUCTION DOCUMENTS.

1.6. CONNECTION OF THE THREE NEW AAON RTU'S VIA BACNET COMMUNICATION WITH THE NEW ALERTON COMPASS 2 BAS.

1.7. REMOVAL OF ALL EXISTING INTERIOR AND EXTERIOR LIGHTING FIXTURES AND CONTROLS AND REPLACEMENT WITH NEW FIXTURES AND

CONTROLS.

2. THE PROJECT WILL ALSO RECEIVE A COMMISSIONING EFFORT AS SPECIFIED IN THE CONSTRUCTION SPECIFICATIONS .

3. THE SHOOTING RANGE IS TO BE RECERTIFIED TO EPA AND OSHA STANDARDS BY AN INDUSTRIAL HYGIENIST.

PROJECT ACCESS:

1. THE CONTRACTOR IS TO COORDINATE ALL BUILDING ACCESS WITH THE OWNER.

2. THIS IS A SECURE FACILITY WITH CONTROLLED ACCESS THAT WILL REQUIRE SCHEDULING AND COORDINATING WORK ACCESS WITH THE OWNER

FOR ALL PERSONNEL ACCESS DURING THE PROJECT.

PROJECT BUILDING

12/05/2025 DESIGN DEVELOPMENT

12/29/2025 90% CDS

03/06/2026 100% CDS

M0-1

A. SUBSTITUTIONS: SUBSTITUTION OF SPECIFIED EQUIPMENT WILL BE ALLOWED

THROUGH A PRIOR APPROVAL PROCESS INITIATED BY THE CONTRACTOR.

CONTRACTOR SHALL SUBMIT INTENDED SUBSTITUTION AT LEAST FIVE DAYS

PRIOR TO BID FOR APPROVAL FROM ENGINEER. SUBMITTAL SHALL INCLUDE

CAPACITIES, DIMENSIONS AND OPERATING INSTRUCTIONS FOR EACH PIECE OF

EQUIPMENT. SUBSTITUTION SHALL OCCUR AT NO COST TO THE OWNER.

CONTRACTOR IS RESPONSIBLE FOR COORDINATION OF APPROVED SUBSTITUTION

AND SHALL INCUR ALL COSTS ASSOCIATED WITH THE SUBSTITUTION INCLUDING

STRUCTURAL MODIFICATIONS, SPACE LAYOUT AND REDESIGN COSTS. SEE ALSO

DIVISION I GENERAL REQUIREMENTS.

EXAMINATION OF SITE, DRAWINGS, SPECIFICATIONS:

A. EXAMINE CAREFULLY THE SITE AND CONDITIONS OF THE SITE. PROVIDE ALL

NECESSARY EQUIPMENT AND LABOR TO INSTALL A COMPLETE WORKING SYSTEM

WITHIN THE SITE CONDITIONS.

B. EXAMINE THE DRAWINGS AND SPECIFICATIONS AND 5 DAYS PRIOR TO

BIDDING REPORT ANY ERRORS, OMISSIONS, INCONSISTENCIES, AND CONFLICTS

TO THE ENGINEER TO BE REMEDIED IN AN ADDENDUM TO THE PROJECT PRIOR TO

BID TIME.

C. DRAWINGS ARE DIAGRAMMATIC AND CATALOG NUMBERS GIVEN ARE FOR

REFERENCE ONLY. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING

THE CAPACITY OF THE EQUIPMENT MEETS THE DRAWING REQUIREMENTS AND

SHALL NOT DIMENSION FROM THE MECHANICAL, PLUMBING, OR PIPING

DRAWINGS.

D. THE LATEST ADOPTED VERSIONS OF THE INTERNATIONAL BUILDING CODES

SHALL BE USED AS REQUIRED. THIS WILL ALSO INCLUDE THE LATEST ADOPTED

VERSIONS OF THE MECHANICAL, PLUMBING, AND ENERGY CONSERVATION

CODES. ALL METHODS AND MATERIALS REQUIRED BY THESE CODES SHALL BE

REQUIRED BY THESE SPECIFICATIONS UNLESS INDICATED OTHERWISE. OTHER

APPLICABLE LOCAL CODES AND ORDINANCES SHALL BE AS REQUIRED AND IT

SHALL BE THE CONTRACTOR’S RESPONSIBILITY TO BE KNOWLEDGEABLE OF

THESE REQUIREMENTS.

E. WHERE INSTALLATION PROCEDURES OR ANY PART THEREOF ARE REQUIRED

TO BE IN ACCORDANCE WITH THE RECOMMENDATIONS OF THE MANUFACTURER

OF THE MATERIAL BEING INSTALLED, PRINTED COPIES OF THESE

RECOMMENDATIONS SHALL BE FURNISHED TO THE ENGINEER PRIOR TO

INSTALLATION. INSTALLATION OF THE ITEM WILL NOT BE ALLOWED TO PROCEED

UNTIL THE RECOMMENDATIONS ARE RECEIVED. FAILURE TO FURNISH THESE

RECOMMENDATIONS CAN BE CAUSE FOR REJECTION OF THE MATERIAL.

44” MOUNTING HEIGHT ABOVE

FINISHED FLOOR TO CENTER OF DEVICE

A AMPS

A.D. ACCESS DOOR

AAV AIR ADMITTANCE VALVE

ABV ABOVE

AC AIR CONDITIONING UNIT

AC ABOVE COUNTER

AD AREA DRAIN (SEE SYMBOLS)

A.F.C. ABOVE FINISHED CEILING

A.F.G. ABOVE FINISHED GRADE

AIC AMPERE INTERRUPTING

CAPACITY

AFCI ARC FAULT CIRCUIT

INTERRUPTERS

A.F.F. ABOVE FINISHED FLOOR

AHU AIR HANDLING UNIT

ALUM ALUMINUM

AP ACCESS PANEL OR DOOR

ATS AUTOMATIC TRANSFER SWITCH

AV AUDIO / VIDEO

AVG AVERAGE

AWG AMERICAN WIRE GAGE

BAS BUILDING AUTOMATION SYSTEM

BB BASEBOARD

BD BACK DRAFT DAMPER

BFP BACK FLOW PREVENTOR

BL BOILER

BLDG BUILDING

BLW BELOW

BOB BOTTOM OF BEAM

BOD BOTTOM OF DUCT

BOP BOTTOM OF PIPE

BSMT BASEMENT

BTU BRITISH THERMAL UNIT

C CHILLER

CAFCI COMBINATION ARC FAULT

CIRCUIT INTERRUPTERS

CAP CAPACITY

CB CIRCUIT BREAKER

CBV CIRCUIT BALANCING VALVE

CCT CORRELATED COLOR

TEMPERATURE

CKT CIRCUIT

CFH CUBIC FEET PER HOUR

CFM CUBIC FEET PER MINUTE

CHWR CHILLED WATER RETURN

CHWS CHILLED WATER SUPPLY

CI CAST IRON

CL CENTER LINE

CLG CEILING

CMU CONCRETE MASONRY UNIT

CO CLEAN OUT

COL COLUMN

COMP COMPRESSOR

CONC CONCRETE

COND CONDENSATE

CONN CONNECTION

CONT CONTINUATION

CONTR CONTRACTOR

CRI COLOR RENDERING INDEX

CT COOLING TOWER

CT CURRENT TRANSFORMER

CU CONDENSING UNIT

CU COPPER

CUH CABINET UNIT HEATER

CVB CONSTANT VOLUME BOX

CWR CONDENSER WATER RETURN

CWS CONDENSER WATER SUPPLY

DB DRY BULB

DEPT DEPARTMENT

DF DRINKING FOUNTAIN

DIA DIAMETER

DIAG DIAGRAM

DIFF DIFFERENTIAL

DISCH DISCHARGE

DIV DIVISION

DN DOWN

DS DUCT SILENCER

DWG DRAWING

DX DIRECT EXPANSION

(E) EXISTING

EA EXHAUST AIR GRILLE/REGISTER

EAT ENTERING AIR TEMPERATURE

EC ELECTRICAL CONTRACTOR

ECC ECCENTRIC

EF EXHAUST FAN

EFF EFFICIENCY

EL ELEVATION

ELEC ELECTRIC

ELEV ELEVATOR

EM EMERGENCY FUNCTION

ENT ENTERING

EMT ELECTRIC METALLIC TUBE

EQ EQUAL

EQUIP EQUIPMENT

EQUIV EQUIVALENT

ES END SWITCH

ESP EXTERNAL STATIC PRESSURE

ET EXPANSION TANK

EWC ELECTRIC WATER COOLER

EWT ENTERING WATER

TEMPERATURE

EX EXHAUST

EXPAN EXPANSION

EXT EXTERNAL

F DEGREES FAHRENHEIT

FA FREE AREA

FC FAN COIL UNIT

FC FOOTCANDLE

FCV FLOW CONTROL VALVE

FD FIRE DAMPER

FD FLOOR DRAIN

FIN FINISHED

FLA FULL LOAD AMPS

FLEX FLEXIBLE

FLR FLOOR

FOB FLAT ON BOTTOM

FOT FLAT ON TOP

FP FIRE PROTECTION

FP FIRE PUMP

FPM FEET PER MINUTE

FPS FEET PER SECOND

FS FLOW SWITCH

FSD FIRE/SMOKE DAMPER

FT FEET

FXC FLEXIBLE CONNECTION

GND GROUND

GA GAUGE

GAL GALLON

GALV GALVANIZED

GEC GROUND ELECTRODE

CONDUCTOR

GFCI / GFI GROUND FAULT CIRCUIT

INTERRUPTER

GC GENERAL CONTRACTOR

GPH GALLONS PER HOUR

GPM GALLONS PER MINUTE

GRS/LB GRAINS PER POUND

H 2O WATER

HB HOSE BIBB

HD HEAD (SEE SCHEDULES)

HP HEAT PUMP

HP HORSEPOWER

HR HOUR

HT HEIGHT

HTR HEATER

HWR HEATING WATER RETURN

HWS HEATING WATER SUPPLY

HX HEAT EXCHANGER

HZ HERTZ

ID INSIDE DIAMETER

IG ISOLATED GROUND

IN INCHES

INV INVERT

JBOX JUNCTION BOX

K KELVIN

KW KILOWATT

KVA KILO VOLT - AMPS

L LENGTH

LAT LEAVING AIR TEMPERATURE

LV LAVATORY

LB POUND

LD LINEAR DIFFUSER

LF LINEAR FEET

LIN LINEAR

LIQ LIQUID

LM LUMEN

LRA LOCKED ROTOR AMPS

LV LOUVER

LVG LEAVING

LWT LEAVING WATER TEMPERATURE

MBH THOUSANDS OF BTU PER HOUR

MC MECHANICAL CONTRACTOR

MCA MINIMUM CIRCUIT AMPACITY

MCB MAIN CIRCUIT BREAKER

MD MOTORIZED DAMPER

MDP MAIN DISTRIBUTION PANEL

MED MEDIUM

MFR MANUFACTURER

MIN MINIMUM

MISC MISCELLANEOUS

MLO MAIN LUG ONLY

MOCP MAXIMUM OVERCURRENT

PROTECTION

MTD MOUNTED

MUA MAKE-UP AIR UNIT

N NEUTRAL

NC NORMALLY CLOSED

NEG NEGATIVE

NIC NOT IN CONTRACT

NL NIGHT / SECURITY LIGHT - DO

NOT SWITCH

NO NORMALLY OPEN

NOM NOMINAL

NTS NOT TO SCALE

OA OUTSIDE AIR

OBD OPPOSED BLADE DAMPER

OC ON CENTER

OCC OCCUPIED

OCP OVER CURRENT PROTECTION

OD OUTSIDE DIAMETER

OL OVERLOAD

ORD OVERFLOW ROOF DRAIN

OZ OUNCE

PBD PARALLEL BLADE DAMPER

PD PRESSURE DROP

PH PHASE

POS POSITIVE PRESSURE

POS POINT OF SALES

PRV PRESSURE REDUCING VALVE

PS PRESSURE SWITCH

PSI POUNDS PER SQUARE INCH

PT PRESSURE TRANSMITTER

PTAC PACKAGED TERMINAL AIR

CONDITIONER

PV PLUG VALVE

PVC POLYVINYL CHLORIDE

QTY QUANTITY

RA RETURN AIR GRILLE / REGISTER

RCP REFLECTED CEILING PLAN

RD ROOF DRAIN

REL RELIEF

REQD REQUIRED

RF RETURN FAN

RH RELATIVE HUMIDITY

RHC REHEAT COIL

RLA RATED LOAD AMPS

RM ROOM

RPM REVOLUTIONS PER MINUTE

SA SUPPLY AIR GRILLE / REGISTER

SC SHORT CIRCUIT

SCA SHORT CIRCUIT AVAILABLE

SCCR SHORT CIRCUIT CURRENT

RATING

SCH SCHEDULE

SD SMOKE DAMPER

SEF SMOKE EXHAUST FAN

SF SUPPLY FAN

SH SENSIBLE HEAT

SH SHOWER

SP STATIC PRESSURE

SPD SURGE PROTECTION DEVICE

SPEC SPECIFICATION

SQ SQUARE

SS STAINLESS STEEL

SS SAFETY SHOWER

STD STANDARD

STL STEEL

SYS SYSTEM

TEMP TEMPERATURE

TR TRANSFER GRILLE / REGISTER

TR TAMPER RESISTANT

TT TEMPERATURE TRANSMITTER

TTB TELECOMMUNICATIONS

TERMINAL BACKBOARD

TYP TYPICAL

TX TRANSFORMER

UC UNDERCUT DOOR

UH UNIT HEATER

UNO UNLESS NOTED OTHERWISE

UNOCC UNOCCUPIED

UR URINAL

V VOLTS

VA VOLT AMPERE

VA VALVE

VAV VARIABLE AIR VOLUME UNIT

VFD VARIABLE FREQUENCY DRIVE

VRF VARIABLE REFRIGERANT FLOW

VOLT VOLTAGE

VTR VENT THROUGH ROOF

W WIDTH

W WATTS

W/ WITH

W/O WITHOUT

WB WET BULB

WC WATER COLUMN

WC WATER CLOSET

WG WATER GAUGE

WP WEATHERPROOF

WPIU WEATHERPROOF IN-USE

WSR WITHSTAND RATING

XFMR TRANSFORMER

SUBSTITUTIONS:RESPONSIBLE DIVISION:

UNLESS OTHERWISE INDICATED ALL HEATING, VENTILATING, AIR CONDITIONING, PLUMBING,

AND OTHER MECHANICAL EQUIPMENT, MOTORS, AND CONTROLS SHALL BE FURNISHED, SET

IN PLACE AND WIRED AS FOLLOWS:

ITEM FURNISHED SET POWER CONTROL

WIRED WIRED

EQUIPMENT 23 23 26 --

COMBINATION MAGNETIC

MOTOR STARTERS, MAGNETIC

MOTOR STARTERS, VFD'S AND

CONTACTORS 23(1) 26 26(2) 23

FUSED AND UNFUSED

DISCONNECT SWITCHES,

THERMAL OVERLOAD SWITCHES

AND HEATERS, MANUAL MOTOR

STARTERS 26 26 26 --

MANUAL-OPERATING AND

MULTI-SPEED SWITCHES 23 26 26 26

CONTROLS, RELAYS,

TRANSFORMERS 23 23 26 23

THERMOSTATS (LOW VOLTAGE)

AND TIME SWITCHES 23 23 26 23

THERMOSTATS (LINE VOLTAGE) 23 23 26 26

TEMPERATURE CONTROL PANELS 23 23 26 23

MOTOR AND SOLENOID VALVES,

DAMPER MOTORS, PE & EP

SWITCHES 23 23(2) -- 23(2)

PUSH-BUTTON STATIONS

AND PILOT LIGHTS 23 23(2) -- 23(2)

HEATING, COOLING,

VENTILATION AND AIR

CONDITIONING CONTROLS 23 23 26 23

EXHAUST FAN SWITCHES 23 26 26 23(2)

SUBSCRIPT FOOTNOTES:

1. MOTOR STARTER TO INCLUDE CONTROL TRANSFORMER, HOA SWITCH, (1) NO AND (1)NC

AUXILIARY CONTACT, AND “ON” AND “OFF” PILOT LIGHTS.

2. IF ITEM IS FOR LINE VOLTAGE, SET IN PLACE AND CONNECT UNDER DIVISION 26. WHERE

FACTORY MOUNTED ON EQUIPMENT OR ATTACHED TO PIPING OR DUCTS AND USING LINE

VOLTAGE FURNISH AND SET UNDER DIVISION 23, CONNECT UNDER DIVISION 26.

ABBREVIATIONS:

SECTION THROUGH RETURN DUCT

SECTION THROUGH SUPPLY OR OUTSIDE AIR DUCT

SUPPLY OR OUTSIDE AIR DUCT

ACCESS DOOR (BOTTOM OR SIDE)

ACOUSTICALLY LINED DUCT

FIRE DAMPER, SMOKE DAMPER, FIRE/SMOKE DAMPER

MANUAL VOLUME DAMPER

INCLINED DROP IN DIRECTION OF ARROW

INCLINED RISE IN DIRECTION OF ARROW

TRANSITION, RECTANGULAR TO ROUND

FLEXIBLE DUCT

IN-LINE FAN

TRANSITION, RECTANGULAR

SPIN-IN COLLAR INTO ADAPTER ON TOP OF DUCT

CEILING SUPPLY AIR REGISTER/GRILLE

SIDEWALL SUPPLY AIR REGISTER (SR)

ELBOW TURNED DOWN

ELBOW TURNED UP

ELBOW, RADIUS TYPE

ELBOW, SQUARE OR RECTANGULAR TYPE

WITH AIRFOIL TURNING VANES

CEILING RETURN AIR REGISTER (RR)

OPEN END DUCT

FLEXIBLE CONNECTION

SIDEWALL RETURN AIR REGISTER (RR)

VD

FXC

RR

DD

PIPE DROPPING DOWN

PIPE RISING UP

DIRECTION OF FLOW

RELIEF/SAFETY VALVE

FLOW METER-VENTURI

FLOW METER-ORIFICE

AUTOMATIC AIR VENT (EXTEND

AUTOMATIC FILL VALVE

DISCHARGE TO DRAIN)

MANUAL AIR VENT

CONCENTRIC REDUCER

ECCENTRIC REDUCER

STEAM LEAK DETECTOR

TPV

S

CBV

R D

STRAINER

MV

AV

GAS COCK

AQUASTAT

VB VACUUM BREAKER

EXPANSION LOOP

GAS PRESSURE

STEAM TRAP

ANCHOR

EJ

TT

FS

TH

PT/PS

G

PRESSURE SWITCH

& SYPHON (STEAM)

GAUGE COCK

TRANSMITTER OR

THERMOMETER

EXPANSION JOINT

TEMPERATURE

FLOW SWITCH

GUIDE

A

DIRECTION OF PITCH-RISE OR

DROP

STRAINER WITH BLOW

OFF VALVE

UNION - SCREWED OR FLANGED

FLOAT OPERATED

CO

CD

T

CARBON MONOXIDE

CARBON DIOXIDE

THERMOSTAT

CONTROL VALVE

REGULATOR

TRANSMITTER

PRESSURE

GAUGE WITH

FSD FIRE SMOKE DAMPER

RELIEF VALVE

SOLENOID VALVE

TEMPERATURE/PRESSURE

DIAPHRAGM VALVE

BALANCING VALVE

BALL VALVE

GLOBE VALVE, ANGLE

GATE VALVE, ANGLE

LIFT CHECK VALVE

SWING CHECK VALVE

GATE VALVE

BUTTERFLY VALVE

PLUG VALVE

GLOBE VALVE

CIRCUIT SETTING

BALANCING VALVE

THREE WAY CONTROL VALVE

TWO WAY CONTROL VALVE

PRESSURE REDUCING

VALVE (PRV)

EXISTING EQUIPMENT OR

PIPE TO BE REMOVED.

CS CONDENSER WATER SUPPLY

CR CONDENSER WATER RETURN

R REFRIGERANT LIQUID AND VAPOR LINE

RS REFRIGERANT SUCTION / VAPOR

HWS HOT WATER SUPPLY

HWR HOT WATER RETURN

HPS HEAT PUMP SUPPLY

HPR HEAT PUMP RETURN

V VENT PIPING

D DRAIN

G NATURAL GAS

SMS SNOWMELT SUPPLY

SMR SNOWMELT RETURN

CHWS CHILLED WATER SUPPLY

CHWR CHILLED WATER RETURN

LINE DESIGNATION SYMBOLS

MECHANICAL ELEMENTS / VALVING

SMOKE DAMPER

FIRE / SMOKE DAMPERFSD

SD

RH REFRIGERANT HIGH PRESSURE VAPOR

CA COMPRESSED AIR

FD - SD

- FSD

SECTION THROUGH EXHAUST AIR DUCT

HX

S

AIR VENT

HYDRAULIC SEPARATOR

AIR SEPARATOR

HEAT EXCHANGER

DIGITAL SENSOR

OR PUMP

HVAC & DUCTWORK SYMBOLS

POINT OF CONNECTION OF NEW TO EXISTING

M

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DATE: ISSUED FOR:

SHEET NUMBER:

March 06, 2026 - 4:11:56pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

CO

LO

RA

DO

B

UR

EA

U

O F

IN

VE

ST

IG

AT

IO

N

J U

ST

IC

E D

R

IV

E

GW

SB

12/29/2025

25-388

G R

AN

D

J U

N C

TI

O

N , C

O

LO

R

AD

O

11/14/2025 SCHEMATIC DESIGN

12/05/2025 DESIGN DEVELOPMENT

WOMEN

MEN

INTERNET

CRIMES

TACTICAL

EXERCISE

AIC

CURRENT

FILES

LAB/FIELD

CORR

C107

VEST.

COPY

CORR

C113

CLERICAL

CORR

C108

CORR

C117

MEN

WOMEN

AIC

CONFERENCE

CORRIDOR

C116

OPEN OFFICE

STORAGE

SERVER

TRAINING

OPEN OFFICE

BIO VEST.

SEROLOGY

LAB

SHAKEDOWN

SHAKEDOWN

CODIS

SHAKEDOWN

SHAKEDOWN

BIO VEST.

DNA SAMPLE

DNA

EVIDENCE

JAN.

DNA AMP LAB

SEROLOGY

EVIDENCE

COMPUTER

LAB

MECHANICAL

GUN VAULT

LATENTS

EVALUATION

DUSTING

NIBIN

AFIS

FUMING

WORK

STATION

DIGITAL

PHOTO

PROCESSING

FIREARMS

LAB

AMMO

GSR

WORK

WORK

RANGE

CHEM.

INSTRUMENT

CHEM. LAB

CHEM.

EVIDENCE

STORAGE

GAS/LN

STORAGE

CHEM.

SOLVENT

STORAGE

TRACE

ANALYSIS

BIO

VESTIBULE

RANGE

MASTER

TOOL

RESTROOM

JAN.

BIO VEST.

GUN CLEAN

BIO ALCOVE

CORR

C101

CORR

C118

CORR

C104

CORR

C103

CORR

C120

CORR

C105

CORR

C109

LOBBY

CORR

C112

CORR

C111

CONFERENCE

STORAGE

PROCESSING

INTAKE

BLACK BOX

CRIME SCENE

VAN

VEHICLE

PROCESSING

ELECTRIC

INTER.

POLY.

INTER.

TOILET

MONITOR

WOMENS

LOCKERS

MENS

LOCKERS

CORR

C114

STORAGE

COOLER

FREEZER

LIBRARY

LOBBY

CORR

C110

CORR

C106

CORR

C100

ANALYSTS

EQUIP

KITCHEN

BREAK

STORAGE

6 7

FF

A

B

C

DD

B.9

EE

FEC

TRAVEL DISTANCE = 137 FT

REF.

11 12

14 16

AA

BB

CC

DD

FF

B

C

13.5

13.5 16.2

13.7

13.7

B.9

RAMP 1:12

SR

-3 22

SR

-3 22

CD-1

CD-1

CD-1

EG-2

EG-2

EG-2

10Ø10Ø 10 Ø

Ø 10

Ø

14x14

12Ø12Ø

12Ø

CD-1

Ø

EG-1

12Ø

10Ø

6Ø

Ø

6Ø

10Ø

10Ø

Ø

12Ø

Ø

C D

-4

TY

P

CD-4

CD-4

C D

-4

0C D

-4

CD-4

C D

-4

C D

-4

C D

-4

Ø

Ø

Ø

Ø

Ø

10Ø

Ø

Ø

24x12

EG

-3

6Ø

8Ø

EG-1

EG

-2

EG-1

EG-1

20X21

Ø

10Ø 10Ø

10Ø10Ø

Ø

10Ø

10Ø

Ø

20X16

10Ø

10Ø x1

24x12

6Ø

6Ø

6Ø

6Ø

16X16

Ø

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

SR-4

115 8Ø8Ø

EG-1

14X14

EG-3

EG-3

10Ø10Ø

12X12 ROOF OPENING

EG-2

EG-2

EG-1

12Ø

12Ø 12Ø

12Ø 12Ø

12Ø

8Ø 8Ø

8Ø8Ø

Ø

6Ø

6Ø

10X10 ROOF OPENING

EG-1

6Ø 6Ø

EG-1

(TYP 3)

EG-1

EXISTING DROP

FROM MAKEUP

AIR UNIT ON ROOF

UP TO EXISTING

EXHAUST FAN

ON ROOF.

EXISTING DROP

FROM MAKEUP

AIR UNIT ON ROOF

EXISTING DROP

FROM EXHAUST

FAN ON ROOF

EXISTING DROP

FROM EXHAUST

FAN ON ROOF

EXISTING

SUPPLY DROP

FROM AHU ON

ROOF

EX

IS

TI

N

G R

ET

U

R N

D R

O P

FR

O

M A

H U

O N

R O

O F

FILTER BOX TO BE

REPLACED WITH NEW

SIZED FOR NEW

AIRFLOW. TYP OF 4

MECHANICAL

12Ø

12Ø 12Ø

12Ø 12Ø

12Ø

CHEM.

SOLVENT

ANALYSIS

EXISTING DROP

FROM EXHAUST

FAN ON ROOF

EXISTING DROP

FROM EXHAUST

FAN ON ROOF

FILTER BOX TO BE

REPLACED WITH NEW

SIZED FOR NEW

AIRFLOW. TYP OF 4

DATE: ISSUED FOR:

SHEET NUMBER:

March 06, 2026 - 4:11:57pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

ME1-1

M

EC

H

AN

IC

AL

EX

IS

TI

N G

FL

O O

R P

LA

N

CO

LO

RA

DO

B

UR

EA

U

O F

IN

VE

ST

IG

AT

IO

N

J U

ST

IC

E D

R

IV

E G

R

AN

D J

U N

C

TI

O N

, C O

LO

R

AD

O

MECHANICAL - EXISTING - FLOOR PLAN

SCALE:

NORTH

SCALE: 1/16" = 1'-0"

GW

SB

12/29/2025

25-388

AS SHOWN

11/14/2025 SCHEMATIC DESIGN

MECHANICAL EXISTING PLAN NOTES:

1. EXISTING INFORMATION SHOWN ON THIS PLAN IS DIAGRAMMATIC. CONTRACTOR SHALL FIELD VERIFY LOCATION OF

EQUIPMENT TO BE REPLACED.

2. REBALANCE AIR TERMINALS AND VAV BOXES TO AIRFLOWS SHOWN ON PLAN AFTER REPLACEMENT OF EXISTING ROOF

TOP EQUIPMENT.

3. ALL DUCTWORK, AIR TERMINALS, AND EQUIPMENT IS EXISTING-TO-REMAIN UNLESS OTHERWISE NOTED.

MECHANICAL - ENLARGED EXISTING MECHANICAL ROOM

SCALE:

NORTH

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

12/05/2025 DESIGN DEVELOPMENT

MECHANICAL - ENLARGED EXISTING RANGE EXHAUST

SCALE:

NORTH

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

MECHANICAL GENERAL NOTES:

1. DRAWING IS DIAGRAMMATIC IN NATURE. LOCATIONS AND SIZES MAY VARY DURING FIELD COORDINATION & INSTALLATION OF MECHANICAL, PLUMBING, & ELECTRICAL. DRAWINGS DO NOT NECESSARILY INDICATE EVERY REQUIRED OFFSET, FITTING, ETC. DRAWINGS ARE NOT TO BE SCALED FOR DIMENSIONS. TAKE ALL DIMENSIONS FROM ARCHITECTURAL DRAWINGS, CERTIFIED EQUIPMENT DRAWINGS AND FROM THE STRUCTURE ITSELF BEFORE FABRICATING ANY WORK, VERIFY ALL SPACE REQUIREMENTS COORDINATING WITH OTHER TRADES, AND INSTALL THE

SYSTEMS IN THE SPACE PROVIDED WITHOUT EXTRA CHARGES TO THE OWNER.

2. COORDINATE FINAL LOCATION OF THERMOSTAT WITH OWNER PRIOR TO INSTALLATION. IF THERMOSTAT IS LOCATED

ON EXTERIOR WALL PROVIDE THERMOSTAT WITH INSULATED BACKING.

3. ROUTE CONDENSATE FROM CONDENSING MECHANICAL EQUIPMENT TO CONDENSATE NEUTRALIZATION KITS.

CONDENSATE FROM NEUTRALIZATION KITS SHALL BE DISCHARGED INDIRECTLY THROUGH AIR GAP TO NEAREST

FLOOR DRAIN.

4. ALL MOTORIZED DAMPERS ON OUTDOOR AIR INTAKES AND EXHAUST SHALL BE PROVIDED WITH CLASS IA MOTORIZED DAMPERS WITH A MAXIMUM LEAKAGE RATE OF 4 CFM/FT² AT 1.0 INCH WATER GAUGE WHEN TESTED IN ACCORDANCE

WITH AMCA 500D. (PER 2012 IECC)

5. MECHANICAL CONTRACTOR SHALL FIELD LOCATE EXISTING DUCTWORK PRIOR TO CONSTRUCTION. MECHANICAL CONTRACTOR SHALL COORDINATE TIE IN CONNECTION POINTS OF NEW SUPPLY DIFFUSERS WITH EXISTING

DUCTWORK AS NECESSARY.

6. CONTRACTOR SHALL CLEAN AND SERVICE ALL EXISTING EQUIPMENT TO REMAIN. CONTRACTOR SHALL VERIFY ALL EQUIPMENT TO REMAIN IS PROPERLY FUNCTIONING PRIOR TO RE-USING EQUIPMENT. CONTRACTOR TO ENSURE THAT

FINAL MECHANICAL SYSTEM WILL OPERATE AS INTENDED ON PROVIDED DRAWINGS.

MECHANICAL FLAG NOTES:

1. EXISTING GAS FIRED BOILERS AND BOILER PUMPS TO BE REPLACED WITH NEW. REFER TO EQUIPMENT SCHEDULES

AND BOILER SCHEMATIC FOR SIZE AND CONNECTIONS.

2. EXISTING RANGE FILTER BOXES TO BE REPLACED WITH NEW TO CORRESPOND WITH UPSIZED EXHAUST AIRFLOW.

REFER TO EQUIPMENT SCHEDULES.

MEN

INTERNET

CRIMES

TACTICAL

EXERCISE

AIC

CURRENT

FILES

LAB/FIELD

CORR

C107

VEST.

COPY

CORR

C113

CLERICAL

CORR

C108

CORR

C117

MEN

WOMEN

AIC

CONFERENCE

CORRIDOR

C116

OPEN OFFICE

STORAGE

SERVER

TRAINING

OPEN OFFICE

BIO VEST.

SEROLOGY

LAB

SHAKEDOWN

SHAKEDOWN

CODIS

SHAKEDOWN

SHAKEDOWN

BIO VEST.

DNA SAMPLE

DNA

EVIDENCE

JAN.

DNA AMP LAB

SEROLOGY

EVIDENCE

COMPUTER

LAB

MECHANICAL

GUN VAULT

LATENTS

EVALUATION

DUSTING

NIBIN

AFIS

FUMING

WORK

STATION

DIGITAL

PHOTO

PROCESSING

FIREARMS

LAB

AMMO

GSR

WORK

WORK

RANGE

CHEM.

INSTRUMENT

CHEM. LAB

CHEM.

EVIDENCE

STORAGE

GAS/LN

STORAGE

CHEM.

SOLVENT

STORAGE

TRACE

ANALYSIS

BIO

VESTIBULE

RANGE

MASTER

TOOL

RESTROOM

JAN.

BIO VEST.

GUN CLEAN

BIO ALCOVE

CORR

C101

CORR

C118

CORR

C104

CORR

C103

CORR

C120

CORR

C105

CORR

C109

LOBBY

CORR

C112

CORR

C111

CONFERENCE

STORAGE

PROCESSING

INTAKE

BLACK BOX

CRIME SCENE

VAN

VEHICLE

PROCESSING

ELECTRIC

INTER.

POLY.

INTER.

TOILET

MONITOR

WOMENS

LOCKERS

MENS

LOCKERS

CORR

C114

STORAGE

COOLER

FREEZER

LIBRARY

LOBBY

CORR

C110

CORR

C106

CORR

C100

ANALYSTS

EQUIP

KITCHEN

BREAK

STORAGE

6 7

FF

A

B

C

DD

B.9

EE

FEC

TRAVEL DISTANCE = 137 FT

REF.

11 12

14 16

AA

BB

CC

DD

FF

B

C

13.5

13.5 16.2

13.7

13.7

B.9

RAMP 1:12

24x12

DATE: ISSUED FOR:

SHEET NUMBER:

March 06, 2026 - 4:11:58pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

ME1-2

M

EC

H

AN

IC

AL

EX

IS

TI

N G

VA

V

PL

AN

CO

LO

RA

DO

B

UR

EA

U

O F

IN

VE

ST

IG

AT

IO

N

J U

ST

IC

E D

R

IV

E G

R

AN

D J

U N

C

TI

O N

, C O

LO

R

AD

O

MECHANICAL - EXISTING - VAV PLAN

SCALE:

NORTH

SCALE: 1/16" = 1'-0"

GW

SB

12/29/2025

25-388

AS SHOWN

11/14/2025 SCHEMATIC DESIGN

12/05/2025 DESIGN DEVELOPMENT

MECHANICAL GENERAL NOTES:

1. DRAWING IS DIAGRAMMATIC IN NATURE. LOCATIONS AND SIZES MAY VARY DURING FIELD COORDINATION & INSTALLATION OF MECHANICAL, PLUMBING, & ELECTRICAL. DRAWINGS DO NOT NECESSARILY INDICATE EVERY REQUIRED OFFSET, FITTING, ETC. DRAWINGS ARE NOT TO BE SCALED FOR DIMENSIONS. TAKE ALL DIMENSIONS FROM ARCHITECTURAL DRAWINGS, CERTIFIED EQUIPMENT DRAWINGS AND FROM THE STRUCTURE ITSELF BEFORE FABRICATING ANY WORK, VERIFY ALL SPACE REQUIREMENTS COORDINATING WITH OTHER TRADES, AND INSTALL THE

SYSTEMS IN THE SPACE PROVIDED WITHOUT EXTRA CHARGES TO THE OWNER.

2. COORDINATE FINAL LOCATION OF THERMOSTAT WITH OWNER PRIOR TO INSTALLATION. IF THERMOSTAT IS LOCATED

ON EXTERIOR WALL PROVIDE THERMOSTAT WITH INSULATED BACKING.

3. ROUTE CONDENSATE FROM CONDENSING MECHANICAL EQUIPMENT TO CONDENSATE NEUTRALIZATION KITS.

CONDENSATE FROM NEUTRALIZATION KITS SHALL BE DISCHARGED INDIRECTLY THROUGH AIR GAP TO NEAREST

FLOOR DRAIN.

4. ALL MOTORIZED DAMPERS ON OUTDOOR AIR INTAKES AND EXHAUST SHALL BE PROVIDED WITH CLASS IA MOTORIZED DAMPERS WITH A MAXIMUM LEAKAGE RATE OF 4 CFM/FT² AT 1.0 INCH WATER GAUGE WHEN TESTED IN ACCORDANCE

WITH AMCA 500D. (PER 2012 IECC)

5. MECHANICAL CONTRACTOR SHALL FIELD LOCATE EXISTING DUCTWORK PRIOR TO CONSTRUCTION. MECHANICAL CONTRACTOR SHALL COORDINATE TIE IN CONNECTION POINTS OF NEW SUPPLY DIFFUSERS WITH EXISTING

DUCTWORK AS NECESSARY.

6. CONTRACTOR SHALL CLEAN AND SERVICE ALL EXISTING EQUIPMENT TO REMAIN. CONTRACTOR SHALL VERIFY ALL EQUIPMENT TO REMAIN IS PROPERLY FUNCTIONING PRIOR TO RE-USING EQUIPMENT. CONTRACTOR TO ENSURE THAT

FINAL MECHANICAL SYSTEM WILL OPERATE AS INTENDED ON PROVIDED DRAWINGS.

MECHANICAL FLAGNOTES:

1. EXISTING VAV CONTROLLER TO BE REMOVED AND REPLACED WITH NEW ALERTON VAV CONTROLLER AND

CONNECTED TO NEW BMS

2. EXISTING HOT WATER VALVE ACTUATOR TO BE REMOVED AND REPLACED. TIE NEW ACTUATOR TO ALERTON BMS.

CONTRACTOR TO EVALUATE VALVE BODY IN FIELD AND RELACE DAMAGED OR LEAKING UNITS.

3. EXISTING THERMOSTAT TO BE REMOVED AND REPLACED. TIE NEW THERMOSTAT TO ALERTON BMS. NEW THERMOSTATS TO BE HARD WIRED THERMOSTATS WITH SPACE ADJUSTMENT WITHIN A RANGE SET BY OWNER.

4. EXISTING BMS CONTROLLERS AND FRONT END MACHINE TO BE REMOVED AND REPLACED WITH NEW ALERTON

SYSTEM.

7 9

AA AA

BB BB

CC

DD

FF

AA

BB

CC

DD

EE

EXISTING TO REMAIN

EXISTING TO REMAIN

EXISTING 12Ø FLUE

8"Ø EXHAUST

EXISTING 4" PVC FLUE

AND COMBUSTION AIR

AND COMBUSTION AIR

AND COMBUSTION AIR

AND COMBUSTION AIR

EXISTING 6"Ø EXHAUST

FROM BELOW

EXISTING 6"Ø EXHAUST

FROM BELOW

EXISTING 6"Ø EXHAUST

FROM BELOW

EXISTING 10"Ø EXHAUST

FROM BELOW

EXISTING 10"Ø EXHAUST

FROM BELOW

EXISTING MAKE UP AIR

UNIT TO BE REMOVED

AND REPLACED

EXISTING MAKE UP AIR

UNIT TO BE REMOVED

AND REPLACED

EXISTING EXHAUST FAN

TO BE REMOVED AND

REPLACED

EXISTING EXHAUST FAN

TO BE REMOVED AND

REPLACED

EXISTING STROBIC LAB

EXHAUST SYSTEM TO

REMAIN.

EXISTING ROOF TOP AHU TO BE

REMOVED AND REPLACED.

EXISTING CURB TO REMAIN.

EXISTING STROBIC LAB

EXHAUST SYSTEM TO

REMAIN.

EXISTING STROBIC LAB

EXHAUST SYSTEM TO

REMAIN.

EXISTING ROOF TOP AHU TO BE

REMOVED AND REPLACED.

EXISTING CURB TO REMAIN.

EXISTING CONDENSING UNIT TO

FOR SPLIT SYSTEM TO REMAIN.

EXISTING CONDENSING UNIT TO

FOR SPLIT SYSTEM TO REMAIN.

EXISTING TO REMAIN

EXISTING TO REMAIN

EXISTING 4" PVC FLUE

EXISTING 4" PVC FLUE

EXISTING 4" PVC FLUE

EXISTING 12Ø FLUE

EXISTING 12Ø FLUE

EXISTING 12Ø

COMBUSTION AIR.

EXISTING 12Ø

COMBUSTION AIR.

EXISTING 12Ø

COMBUSTION AIR.

EXISTING CONDENSING UNIT TO

FOR SPLIT SYSTEM TO REMAIN.

EXISTING ROOF TOP AHU TO BE

REMOVED AND REPLACED.

EXISTING CURB TO REMAIN.

EXISTING CONDENSING UNIT TO

FOR SPLIT SYSTEM TO REMAIN.

DATE: ISSUED FOR:

SHEET NUMBER:

March 06, 2026 - 4:11:59pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

ME1-3

M

EC

H

AN

IC

AL

P

IP

IN

G

R

O O

F

PL

AN

CO

LO

RA

DO

B

UR

EA

U

O F

IN

VE

ST

IG

AT

IO

N

J U

ST

IC

E D

R

IV

E G

R

AN

D J

U N

C

TI

O N

, C O

LO

R

AD

O

MECHANICAL - EXISTING - ROOF PLAN

SCALE:

NORTH

SCALE: 1/16" = 1'-0"

GW

SB

12/29/2025

25-388

AS SHOWN

11/14/2025 SCHEMATIC DESIGN

12/05/2025 DESIGN DEVELOPMENT

MECHANICAL GENERAL NOTES:

1. DRAWING IS DIAGRAMMATIC IN NATURE. LOCATIONS AND SIZES MAY VARY DURING FIELD COORDINATION & INSTALLATION OF MECHANICAL, PLUMBING, & ELECTRICAL. DRAWINGS DO NOT NECESSARILY INDICATE EVERY REQUIRED OFFSET, FITTING, ETC. DRAWINGS ARE NOT TO BE SCALED FOR DIMENSIONS. TAKE ALL DIMENSIONS FROM ARCHITECTURAL DRAWINGS, CERTIFIED EQUIPMENT DRAWINGS AND FROM THE STRUCTURE ITSELF BEFORE FABRICATING ANY WORK, VERIFY ALL SPACE REQUIREMENTS COORDINATING WITH OTHER TRADES, AND INSTALL THE

SYSTEMS IN THE SPACE PROVIDED WITHOUT EXTRA CHARGES TO THE OWNER.

2. COORDINATE FINAL LOCATION OF THERMOSTAT WITH OWNER PRIOR TO INSTALLATION. IF THERMOSTAT IS LOCATED

ON EXTERIOR WALL PROVIDE THERMOSTAT WITH INSULATED BACKING.

3. ROUTE CONDENSATE FROM CONDENSING MECHANICAL EQUIPMENT TO CONDENSATE NEUTRALIZATION KITS.

CONDENSATE FROM NEUTRALIZATION KITS SHALL BE DISCHARGED INDIRECTLY THROUGH AIR GAP TO NEAREST

FLOOR DRAIN.

4. ALL MOTORIZED DAMPERS ON OUTDOOR AIR INTAKES AND EXHAUST SHALL BE PROVIDED WITH CLASS IA MOTORIZED DAMPERS WITH A MAXIMUM LEAKAGE RATE OF 4 CFM/FT² AT 1.0 INCH WATER GAUGE WHEN TESTED IN ACCORDANCE

WITH AMCA 500D. (PER 2012 IECC)

5. MECHANICAL CONTRACTOR SHALL FIELD LOCATE EXISTING DUCTWORK PRIOR TO CONSTRUCTION. MECHANICAL CONTRACTOR SHALL COORDINATE TIE IN CONNECTION POINTS OF NEW SUPPLY DIFFUSERS WITH EXISTING

DUCTWORK AS NECESSARY.

6. CONTRACTOR SHALL CLEAN AND SERVICE ALL EXISTING EQUIPMENT TO REMAIN. CONTRACTOR SHALL VERIFY ALL EQUIPMENT TO REMAIN IS PROPERLY FUNCTIONING PRIOR TO RE-USING EQUIPMENT. CONTRACTOR TO ENSURE THAT

FINAL MECHANICAL SYSTEM WILL OPERATE AS INTENDED ON PROVIDED DRAWINGS.

DATE: ISSUED FOR:

SHEET NUMBER:

March 06, 2026 - 4:11:59pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

ME2-1

M

EC

H

AN

IC

AL

P

IP

IN

G

EX

IS

TI

N G

V

AV

S C

H

ED

U

LE

S

CO

LO

RA

DO

B

UR

EA

U

O F

IN

VE

ST

IG

AT

IO

N

J U

ST

IC

E D

R

IV

E G

R

AN

D J

U N

C

TI

O N

, C O

LO

R

AD

O

GW

SB

12/29/2025

25-388

AS SHOWN

11/14/2025 SCHEMATIC DESIGN

1. BOXES PROVIDED WITH DDC UNITARY CONTROLLER.

1. BOXES PROVIDED WITH DDC UNITARY CONTROLLER.

1. HEATING CAPACITY BASED ON 30% PROPYLENE GLYCOL.

2. BOXES PROVIDED WITH DDC UNITARY CONTROLLER, PROPORTIONAL THREE WAY CONTROL VALVE, ROOM SENSOR WITH EXTERNAL ADJUSTMENT.

3. PROVIDE FAN MODEL 03SQ-EMC.

4. PROVIDE FAN MODEL 04SQ-EMC.

5. PROVIDE 2 ROW COIL.

1. BOXES PROVIDED WITH DDC UNITARY CONTROLLER.

NOTES:

SCHEDULES ON THIS SHEET ARE FOR REFERENCE ONLY TO ASSIST WITH EQUIPMENT COUNTS FOR CONTROL DEVICES. REFER TO ME1-2 FOR EXISTING VAV LOCATIONS. FIELD VERIFY INFORMATION PRIOR TO ORDERING EQUIPMENT.

12/05/2025 DESIGN DEVELOPMENT

March 06, 2026 - 4:12:00pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

ME2-2

M

EC

H

AN

IC

AL

P

IP

IN

G

EX

IS

TI

N G

V

AV

S C

H

ED

U

LE

S

CO

LO

RA

DO

B

UR

EA

U

O F

IN

VE

ST

IG

AT

IO

N

J U

ST

IC

E D

R

IV

E G

R

AN

D J

U N

C

TI

O N

, C O

LO

R

AD

O

GW

SB

12/29/2025

25-388

AS SHOWN

11/14/2025 SCHEMATIC DESIGN

NOTES:

SCHEDULES ON THIS SHEET ARE FOR REFERENCE ONLY TO ASSIST WITH EQUIPMENT COUNTS FOR CONTROL DEVICES. REFER TO ME1-2 FOR EXISTING VAV LOCATIONS. FIELD VERIFY INFORMATION PRIOR TO ORDERING EQUIPMENT.

1. HEATING COMPACITY BASED ON 30% PROPYLENE GLYCOL.

2. PROVIDE PROPORTIONAL THREE WAY CONTROL VALVE AND ROOM SENSOR.

12/05/2025 DESIGN DEVELOPMENT

7 9

AA AA

BB BB

CC

DD

FF

AA

BB

CC

DD

EE

EXISTING 12Ø FLUE

8"Ø EXHAUST

EXISTING 4" PVC FLUE

AND COMBUSTION AIR

AND COMBUSTION AIR

AND COMBUSTION AIR

AND COMBUSTION AIR

EXISTING 6"Ø EXHAUST

FROM BELOW

EXISTING 6"Ø EXHAUST

FROM BELOW

EXISTING 6"Ø EXHAUST

FROM BELOW

EXISTING 10"Ø EXHAUST

FROM BELOW

EXISTING 10"Ø EXHAUST

FROM BELOW

EXISTING STROBIC LAB

EXHAUST SYSTEM TO

REMAIN.

EXISTING CONDENSING UNIT TO

FOR SPLIT SYSTEM TO REMAIN.

EXISTING 4" PVC FLUE

EXISTING 4" PVC FLUE

EXISTING 4" PVC FLUE

EXISTING 12Ø FLUE

EXISTING 12Ø FLUE

EXISTING 12Ø

COMBUSTION AIR.

EXISTING 12Ø

COMBUSTION AIR.

EXISTING 12Ø

COMBUSTION AIR.

EXISTING CONDENSING UNIT TO

FOR SPLIT SYSTEM TO REMAIN.

SU

PPLY

D U

C T

SU

PPLY

D U

C T

(E)

(E)

(E)

(E)

(E)

(E)

(E)

(E) (E)

(E)

(E)

(E)

Width

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

GASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGAS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

G

AS

GASGASGASGASGAS

G

AS

G

AS

G

AS

G

AS

GAS

G

AS

G

AS

G

AS

G

AS

G

AS

ROUTE GAS DOWN FROM

HIGH ROOF TO LOW

ROOF.

ROUTE GAS UP FROM

LOW ROOF TO HIGH

ROOF.

2"Ø

2" Ø

2" Ø

2"Ø

1- 1/

2" Ø

1-1/2"Ø1-1/2"Ø 1"Ø

1" Ø

1"Ø 1"Ø 1"Ø

1" Ø

1" Ø

G G

G G

GGGGGGGGGGGGGGG

G G

GGGGGGG

G G

GGGG

G G

G G

G G

GG

DATE: ISSUED FOR:

SHEET NUMBER:

March 06, 2026 - 4:12:01pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

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MECHANICAL - ROOF PLAN

SCALE:

NORTH

SCALE: 1/16" = 1'-0"

GW

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AS SHOWN

11/14/2025 SCHEMATIC DESIGN

12/05/2025 DESIGN DEVELOPMENT

MECHANICAL GENERAL NOTES:

1. DRAWING IS DIAGRAMMATIC IN NATURE. LOCATIONS AND SIZES MAY VARY DURING FIELD COORDINATION & INSTALLATION OF MECHANICAL, PLUMBING, & ELECTRICAL. DRAWINGS DO NOT NECESSARILY INDICATE EVERY REQUIRED OFFSET, FITTING, ETC. DRAWINGS ARE NOT TO BE SCALED FOR DIMENSIONS. TAKE ALL DIMENSIONS FROM ARCHITECTURAL DRAWINGS, CERTIFIED EQUIPMENT DRAWINGS AND FROM THE STRUCTURE ITSELF BEFORE FABRICATING ANY WORK, VERIFY ALL SPACE REQUIREMENTS COORDINATING WITH OTHER TRADES, AND INSTALL THE

SYSTEMS IN THE SPACE PROVIDED WITHOUT EXTRA CHARGES TO THE OWNER.

2. COORDINATE FINAL LOCATION OF THERMOSTAT WITH OWNER PRIOR TO INSTALLATION. IF THERMOSTAT IS LOCATED

ON EXTERIOR WALL PROVIDE THERMOSTAT WITH INSULATED BACKING.

3. ROUTE CONDENSATE FROM CONDENSING MECHANICAL EQUIPMENT TO CONDENSATE NEUTRALIZATION KITS.

CONDENSATE FROM NEUTRALIZATION KITS SHALL BE DISCHARGED INDIRECTLY THROUGH AIR GAP TO NEAREST

FLOOR DRAIN.

4. ALL MOTORIZED DAMPERS ON OUTDOOR AIR INTAKES AND EXHAUST SHALL BE PROVIDED WITH CLASS IA MOTORIZED DAMPERS WITH A MAXIMUM LEAKAGE RATE OF 4 CFM/FT² AT 1.0 INCH WATER GAUGE WHEN TESTED IN ACCORDANCE

WITH AMCA 500D. (PER 2012 IECC)

5. MECHANICAL CONTRACTOR SHALL FIELD LOCATE EXISTING DUCTWORK PRIOR TO CONSTRUCTION. MECHANICAL CONTRACTOR SHALL COORDINATE TIE IN CONNECTION POINTS OF NEW SUPPLY DIFFUSERS WITH EXISTING

DUCTWORK AS NECESSARY.

6. CONTRACTOR SHALL CLEAN AND SERVICE ALL EXISTING EQUIPMENT TO REMAIN. CONTRACTOR SHALL VERIFY ALL EQUIPMENT TO REMAIN IS PROPERLY FUNCTIONING PRIOR TO RE-USING EQUIPMENT. CONTRACTOR TO ENSURE THAT

FINAL MECHANICAL SYSTEM WILL OPERATE AS INTENDED ON PROVIDED DRAWINGS.

12/29/2025 90% CDS

MECHANICAL FLAG NOTES:

1. ROUTE NEW MEDIUM PRESSURE GAS LINE FROM EXISTING GAS METER LOCATION TO NEW GAS FIRE ROOF TOP

UNITS ON ROOF.

2. VERIFY EXISTING GAS LINE IS SUFFICIENT TO SUPPORT NEW GAS FIRED MAKEUP AIR UNITS.

3. PROVIDE MEDIUM-TO-LOW GAS PRESSURE REGULATOR AND GAS SHUTOFF VALVE AT RTU. REFER TO GAS

CONNECTION TO EQUIPMENT DETAIL FOR MORE INFORMATION.

4. NEW RTU TO BE MOUNTED ON EXISTING CURB WITH ADAPTER CURB.

March 06, 2026 - 4:12:01pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

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Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

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11/14/2025 SCHEMATIC DESIGN

12/05/2025 DESIGN DEVELOPMENT

12/29/2025 90% CDSGAS CONNECTION TO EQUIPMENT DETAIL

March 06, 2026 - 4:12:04pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

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-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

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11/14/2025 SCHEMATIC DESIGN

12/05/2025 DESIGN DEVELOPMENT

TO GAS METER

PRESSURE GAUGE

TYPICAL

TO VAV'S

HWC'S, UH'S

AND AHU'S

CONNECTOR

FLEXIBLE

NOTE:

FINAL FILL OF SYSTEM SHALL BE WITH A

SOLUTION OF 30% PROPYLENE GLYCOL.

WITH STRAINER

B&G #R-5 ROLAIRTROL

EXPANSION TANK

B&G #D-80 PRESSURIZED

B&G #7

1"

2-1/2"

4" CONCRETE HOUSEKEEPING PAD

1"

3"

4" CONCRETE HOUSEKEEPING PAD BOILER DRAIN

FULL SIZE TO FLOOR

PIPE RELIEF VALVE

DRAIN

3"

SYSTEM FILL

CONNECTIONS

B&G #107 AIR VENT

TYPICAL

HWS

HWR

HWR

HWS

HWR

4"

HWS

HWR

THERMOMETER

TYPICAL4"

GLYCOL FEEDER

3/4"AXIOM #MF300

AIR VENT

STRAINER

APPROXIMATE VOLUME OF SYSTEM IS 410 GALLONS

2-1/2"

12/29/2025 90% CDS

EXISTING CIRCUIT SETTER TO

BE REMOVED. TYPICAL

March 06, 2026 - 4:12:05pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

M4-1

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11/14/2025 SCHEMATIC DESIGN

12/05/2025 DESIGN DEVELOPMENT

March 06, 2026 - 4:12:07pm

DO NOT REPRODUCE THESE DRAWINGS AND

SPECIFICATIONS WITHOUT THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER. THE DRAWINGS AND

SPECIFICATIONS ARE INSTRUMENTS OF THE SERVICE AND

SHALL REMAIN THE PROPERTY OF THE DESIGNER

WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS

EXECUTED OR NOT. THESE DRAWINGS AND

SPECIFICATIONS SHALL NOT BE USED BY ANYONE ON

ANY OTHER PROJECTS FOR ADDITIONS TO THIS PROJECT

BY OTHERS EXCEPT BY THE EXPRESSED WRITTEN

PERMISSION OF THE DESIGNER.

Bi gh or n

C on su lti ng E ng in ee rs

, I nc

M ec ha ni ca l & E le ct ric al

E ng in ee rs

In di an

R oa d G ra nd

J un ct io n, C

O

Ph on e:

(9

) 2

-8

DATE:

CHECKED BY:

JOB NO:

DRAWN BY:

SCALE:

M4-2

M

EC

H

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AL

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D

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G

R

AM

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CO

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DO

B

UR

EA

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11/14/2025 SCHEMATIC DESIGN

Sequence of Operation: VAV TERMINAL UNIT

Building Automation System Interface:

The Building Automation System (BAS) shall send the controller Occupied, and Unoccupied commands. The BAS may also send a Heat/Cool mode, priority shutdown commands, space temperature and/or space temperature setpoint. If communication is lost with the BAS, the controller shall operate using its local setpoints.

Occupied:

The occupancy mode shall be communicated or hardwired to the controller via a binary input. When the unit is in the occupied mode the VAV shall maintain the space temperature at the active occupied heating or cooling setpoint. Applicable ventilation and airflow setpoints shall be enforced. The occupied mode shall be the default mode of the VAV. Applicable ventilation and airflow setpoints shall be enforced. The occupied mode shall be the default mode of the VAV.

Occupied Standby:

The occupancy mode shall be communicated or hardwired to the controller via a binary input, even though the BAS has scheduled the space as occupied. In the occupied standby mode, the active cooling and heating setpoints shall be relaxed (see cooling and heating mode) and both the ventilation airflow and minimum airflow setpoints shall be lowered (see VAV schedule).

Occupied Bypass:

Mode used to temporarily place the unit into the occupied operation. Tenants shall be able to override the unoccupied mode from the space sensor. The override shall last for a maximum of 4 hours (adj.). The tenants shall be able to cancel the override from the space sensor at any time. During the override the unit shall operate in occupied mode.

Heat/Cool Setpoint:

The space temperature setpoint shall be determined either by a local (e.g., thumbwheel) setpoint, the VAV default setpoint or a communicated value. The VAV shall use the locally stored default setpoints when neither a local setpoint nor communicated setpoint is present. If both a local setpoint and communicated setpoint exist, the VAV shall use the communicated value.

Cooling Mode:

When the unit is in cooling mode, the VAV controller shall maintain the space temperature at the active cooling setpoint by modulating the airflow between the active cooling minimum airflow setpoint to the maximum cooling airflow setpoint. The VAV shall use the measured space temperature and the active cooling setpoint to determine the requested cooling capacity of the unit. The outputs shall be controlled based on the unit configuration and the requested cooling capacity.

Based on the VAV controller occupancy mode, the active cooling setpoint shall be one of the following:

Setpoint Default Value Occupied Cooling Setpoint 74.0 deg. F Unoccupied Cooling Setpoint 85.0 deg. F Occupied Standby Cooling Setpoint 78.0 deg. F Occupied Min Cooling Airflow Setpoint See VAV Schedule Occupied Max Cooling Airflow Setpoint See VAV Schedule

Heating Mode:

Reheat shall only be allowed when the supply air temperature is 5.0 deg. F below the configured reheat enable setpoint of 70.0 deg. F (adj.). The reheat shall be enabled when the space temperature drops below the active heating setpoint and the minimum airflow requirements are met. During reheat the VAV shall operate at its minimum heating airflow setpoint and energize the heat as follows:

Setpoint Default Value Occupied Heating Setpoint 71.0 deg. F Unoccupied Heating Setpoint 60.0 deg. F Occupied Standby Heating Setpoint 67.0 deg. F Occupied Min Heating Airflow Setpoint See VAV Schedule Occupied Max Heating Airflow Setpoint See VAV Schedule

Modulating Heat

Single Duct with Discharge Air Reset with Discharge Air Reset Enabled: For units equipped with modulated heat (modulated hot water, PWM or SCR electric): When the zone temperature drops below the active heating setpoint, the air valve modulates to the Air Flow Setpoint Minimum Local Heat, Air Flow Setpoint Minimum, or Ventilation Setpoint Local, whichever is greater. The controller modulates the hot-water valve (or SCR electric heater) to maintain zone temperature at the active heating setpoint. For units with electric heat, the airflow setpoint must be reached before the heat shall be enabled. As the required reheat capacity increases, the Discharge Air Temperature Setpoint Manager increases. When the Discharge Air Temperature Setpoint Manager reaches the Discharge Air Temp Design Setpoint, and the measured discharge air temperature is within 5 F of the Discharge Air Temp Design Setpoint, the airflow shall be allowed increase from the Airflow Setpoint Reset Min Local Heat to the Airflow Setpoint Reset Max Local Heat. If additional heating capacity is still required, the Discharge Air Temperature Setpoint Manager shall be increased to the Discharge Air Temp Reset Max

Local Reheat Control:

Reheat shall only be allowed when the primary air temperature is 5.0 deg. F below the configured reheat enable setpoint of 70.0 deg. F (adj.). The reheat shall be enabled when the space temperature drops below the active heating setpoint and the minimum airflow requirements are met. During reheat the VAV shall operate at its minimum heating airflow setpoint and energize the heat as follows:

Hot Water Analog Reheat:

If the space temperature is below the heating setpoint the hot water reheat valve shall control as required to maintain the active heating setpoint.

Modulating Hot Water Reheat (ANG)

If the space temperature is below the heating setpoint the hot water reheat valve shall modulate as required to maintain space temperature at the active heating setpoint while the VAV operates at its minimum heating airflow setpoint. If the discharge air temperature reaches the design heating discharge air temperature setpoint (adj.), the VAV shall modulate airflow between the minimum heating airflow setpoint and the maximum heating airflow setpoint as required to maintain space temperature at the active heating setpoint.

Air Valve Control:

When the unit is in occupied mode, the ventilation airflow setpoint shall be continuously calculated using the measured CO2 concentration in the space communicated to the VAV controller via the BAS.

Demand Control Ventilation:

When the unit is in unoccupied mode, the ventilation airflow setpoint shall be zero. When the unit is in occupied mode, the ventilation airflow setpoint shall be equal the design outdoor airflow and reset based on occupancy and CO2.

OCCUPANCY SENSOR: When the unit is in occupied mode, and the occupancy sensor indicates that the space is currently unoccupied, the ventilation airflow setpoint shall be the "occupied standby" outdoor airflow (see VAV schedule).

CO2 SENSOR: When the unit is in occupied mode, the ventilation airflow setpoint shall be continuously calculated using the measured CO2 concentration in the return air.

The current ventilation airflow setpoint shall be communicated to the BAS for control of the system outdoor-air intake.

Space Sensor Failure:

If there is a fault with the operation of the zone sensor an alarm shall be annunciated at the BAS. Space sensor failure shall cause the VAV to drive the damper to minimum air flow if the VAV is in the occupied mode, or drive it closed if the VAV is in the unoccupied mode.

Sequence of Operation: HEATING PLANT SYSTEM

System General Description:

The heating plant system controller provides stand-alone control or control from an optional higher level Building Automation System (BAS) . The heating plant control system shall monitor and control the system's boiler(s), pump(s), and control valves as shown on the heating plant flow diagram, in the heating plant points list and as detailed in the sequence of operation listed below.

The heating plant system consists of hot water boiler(s) with its piping configuration arranged as a primary / secondary loop supplying hot water to the facility.

The manifolded hot water distribution pumps are configured as lead / lag control. The factory boiler system controller shall provide stand-alone control or BAS workstation control of the supply heating water temperature setpoint (adj.).

Heating System Enable/Disable:

The heating system shall be enabled/disabled by the heating plant controller as requested by the Building Automation System (BAS) human-interface panel or the BAS time of day schedule. When enabled, the system shall enable the lead boiler, the associated primary boiler pump and enable the lead secondary pump. The heating plant is disabled when all boilers are disabled and there is not an active hot water distribution pump request. When the plant is disabled the hot water pump shall be commanded off.

Hot Water Reset:

The hot water supply temperature setpoint shall be linearly reset from 120.0 deg. F (adj.) to 180.0 deg. F (adj.) as the outside air temperature falls from 60.0 deg. F (adj.) to 0.0 deg. F (adj.)

Boiler Control:

The boiler lead/lag sequence shall be based on a weekly schedule. From the system controller or a BAS workstation, an operator shall be able to manually change the lead/lag sequence.

If the hot water distribution system supply temperature falls more than 25.0 deg. F (adj.) below setpoint for a period longer than 15 minutes (adj.), or if an active boiler signals a failure alarm, the system controller shall enable the lag boiler.