Attachment B - Drawings-1862691.pdf

06/23/2025

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MECHANICAL LEGEND

THERMOSTAT

HUMIDITY SENSOR

AIR TERMINAL TAG WITH AIR FLOW (CFM)

RECTANGULAR DUCT DIMENSIONS (INCHES)

ROUND DUCT DIMENSION

FLEXIBLE ROUND DUCT

DOWNWARD DIRECTION OF SLOPED PIPING

GATE VALVE

GLOBE VALVE

BUTTERFLY VALVE

MANUAL FLOW CONTROL BALANCING VALVE

CHECK VALVE

AUTOMATIC FLOW BALANCING VALVE

PRESSURE REDUCING VALVE

SQUARE HEAD BALANCING COCK

DRAIN VALVE WITH HOSE CONNECTION

2-WAY CONTROL VALVE

3-WAY CONTROL VALVE

RELIEF VALVE

BACKFLOW PREVENTER

MANUAL AIR VENT

AUTOMATIC AIR VENT

VACUUM BREAKER

STEAM TRAP

WYE STRAINER

VALVE IN VERT. PIPING

SPRINKLER HEAD

STRAINER W/ SLOWDOWN VALVE

CLEAN OUT

ECCENTRIC REDUCER

PIPE REDUCER

UNION

THERMOMETER IN PIPE WELL

PRESSURE GAUGE W/ SHUTOFF COCK

PIPE CAP

FLANGE

FLEXIBLE PIPE CONNECTOR

t WxH 1 DUCTWORK (WIDTH x HEIGHT) f IH SUPPLY DUCT TURN UP f 114 RETURN DUCT TURN UP f IIXI SUPPLY OR OUTSIDE AIR DUCT TURN DOWN f 11/1 RETURN OR OUTSIDE AIR DUCT TURN DOWN

90 DEG. ELBOW W/TURNING VANE

1 _l t TYPICAL BRANCH DUCT TAKE-OFF

"'-.-----.7 MVD WITH MANUAL VOLUME DAMPER

tii

I

IMVD

rr_�

ROUND DUCT TAKE-OFF WITH CONICAL

SPIN WITH/MANUAL VOLUME DAMPER

FLEXIBLE DUCTWORK W/:ADJUSTING

ADJUSTING HANDLE FOR DUCT

MOUNTED VOLUME DAMPER

I\J n l/'c'�. c 1F =--, 'J '·. '�·· .. \ ·-·' ·._) - _;

MECHANICAL PIPING LEGEND

---(NAME)-

--A--

-CDR-

-cos-

-CWR-

-cws-

-D--

-DCW-

-DTR-

-DTS-

--G--

-HG-

-HPS-

-HWR-

-HWS-

-LPC-

-LPS-

- RL -

- RS -

-VAC-

PIPING TO BE REMOVED

COMPRESSED AIR PIPING

CONDENSER WATER RETURN PIPING

CONDENSER WATER SUPPLY PIPING

CHILLED WATER RETURN PIPING

CHILLED WATER SUPPLY PIPING

CONDENSATE DRAIN PIPING

DOMESTIC COLD WATER PIPING

DUAL TEMPERATUR SUPPLY PIPING

DUAL TEMPERATURE RETURN PIPING

NATURAL GAS PIPING

HOT GAS BYPASS PIPING

HIGH PRESSURE STEAM PIPING

HOT WATER RETURN PIPING

HOT WATER SUPPLY PIPING

LOW PRESSURE CONDENSATE PIPING

LOW PRESSURE STEAM PIPING

REFRIGERANT LIQUID PIPING

REFRIGERANT SUCTION PIPING

VACUUM (AIR)

I l.�·L·--1F--. ·._\ I . .D '_··. '_- -... -- ·' \J ·, --�' ' \ _'--' __ •

M EC HAN ICAL ABBREVIATIONS

AD

AFF

AP

APO

AHU

AQS

8D

BR

BTUH

C Cv cu cw

CFM

CLG

CND

COP

CRAU

DB

DOC

DEG

DX

EAT

EER

EF

EFF

ESP

EWT

F

FCU

FD

FT

FTWG

GPM

HGT

HP

HR

HW

HX

IWG

IAW

kW

LAT

LBS

LV

LWT

MAHU

MAX

MIN

NC

NO

OA

OAU

OU

PH

PRS

PSI

PTAC

PTHP

RA

RH

RL

RS

RTU

SA

SEER

SIM

SP

SQ

TYP

UH

UOI

V

VFD

w

WB

WPD .

r/J

ACCESS DOOR

ABOVE FINISHED FLOOR

ACCESS PANEL

AIR PRESSURE DROP

AIR HANDLING UNIT

AIR QUALITY SENSOR

BALANCING DAMPER

BASEBOARD RADIATOR

BRITISH THERMAL UNIT PER HOUR

COMMON

LOSS COEFFICIENT

CONDENSING UNIT

CHILLED WATER

CUBIC FEET PER MINUTE

CEILING

CONDENSER

COEFFICENT OF PERFORMANCE

COMPUTER ROOM AIR HANDLING UNIT

DRY BULB

DIRECT DIGITAL CONTROL

DEGREE

DIRECT EXPANSION

ENTERING AIR TEMPRATURE

ENERGY EFFICIENCY RATIO

EXHAUST FAN

EFFICIENCY

EXTERNAL STATIC PRESSURE

ENTERING WATER TEMPERATURE

FAHRENHEIT

FAN COIL UNIT

FIRE DAMPER

FEET

FEET OF WATER GAUGE

GALLONS PER MINUTE

HEIGHT

HEAT PUMP, HORSEPOWER

HOUR

HOT WATER

HEAT EXCHANGER

INCHES OF WATER GAUGE

IN ACCORDANCE WITH

KILOWATT

LEAVING AIR TEMPERATURE

POUNDS

LOUVER

LEAVING WATER TEMPERATURE

MAKEUP AIR UNIT

MAXIMUM

MINIMUM

NOISE CRITERIA, NORMALLY CLOSED

NUMBER, NORMALLY OPEN

OUTSIDE AIR

OUTSIDE AIR UNIT

OUTDOOR UNIT

PHASE

PRESSURE REDUCING STATION

POUNDS PER SQUARE INCH

PACKAGED TERMINAL AIR CONDITIONER

PACKAGED TERMINAL HEAT PUMP

RETURN AIR

RELATIVE HUMIDITY

REFRIGERANT LIQUID

REFRIGERANT SUCTION

ROOFTOP UNIT

SUPPLY AIR

SEASONAL ENERGY EFFICIENCY RATIO

SIMILAR

STATIC PRESSURE

SQUARE

TYPICAL

UNIT HEATER

UNLESS OTHERWISE INDICATED

VOLTS

VARIABLE FREQUENCY DRIVE

WIDTH

WET BULB

WATER PRESSURE DROP

DEGREES

DIAMETER

MECHANICAL SYMBOLS

() POINT OF DISCONNECTION

� POINT OF CONNECTION

GENERAL MECHANICAL NOTES

1. THESE GENERAL MECHANICAL NOTES APPLY TO THE ALL

MECHANICAL DRAWINGS IN THIS SET. SHEET SPECIFIC NOTES ARE

INDICATED ON EACH SHEET UNDER GENERAL SHEET NOTES.

2. PATCH ALL HOLES FROM REMOVAL OF PIPING, DUCTWORK, OR

EQUIPMENT TO MATCH ADJACENT CONSTRUCTION.

3. PROVIDE ALL MATERIALS AND EQUIPMENT AND PERFORM ALL

LABOR REQUIRED TO INSTALL COMPLETE AND OPERABLE

MECHANICAL SYSTEMS AS INDICATED ON THE DRAWINGS, AS

SPECIFIED AND AS REQUIRED BY CODE.

4. INSTALL ALL MECHANICAL EQUIPMENT AND APPURTENANCES IN

ACCORDANCE WITH MANUFACTURER'S RECOMMENDATIONS, THIS

CONTRACT'S DOCUMENTS, AND APPLICABLE CODES AND

REGULATIONS.

5. PROVIDE VIBRATION ISOLATORS FOR ALL MECHANICAL EQUIPMENT

TO PREVENT TRANSMISSION OF VIBRATION TO BUILDING

STRUCTURE.

6. PROVIDE ACCESS PANELS IN WALLS AND CEILINGS, WHERE

REQUIRED, TO SERVE FIRE DAMPERS, VALVES, SMOKE DETECTORS,

AND OTHER CONCEALED MECHANICAL EQUIPMENT THAT REQUIRES

ROUTINE MAINTENANCE. ACCESS PANELS BE LARGE ENOUGH TO

ALLOW PROPER CLEARANCE FOR ACCESS DOORS.

7. ALL OPENINGS IN FIRE WALLS DUE TO DUCTWORK, PIPING,

CONDUIT, ETC., SHALL BE FIRE STOPPED.

8. EXISTING DUCT AND PIPING SIZES INDICATED ARE APPROXIMATE.

FIELD VERIFY ALL DIMENSIONS.

9. LOCATE ALL NEW HORIZONTAL DUCTWORK ABOVE THE SUSPENDED

CEILINGS UNLESS OTHERWISE INDICATED.

10. ALL 90 DEGREE RECTANGULAR MITERED DUCT ELBOWS IN THE

SUPPLY AND RETURN DUCTS SHALL HAVE TURNING VANES.

11. PROVIDE PIPE SLEEVES FOR ALL PIPING PENETRATIONS THRU

WALLS AND FLOORS. EACH PIPE SHALL BE SEPARATELY SLEEVED.

PROVIDE CONTINUOUS SEALANT JOINT AROUND PIPE SLEEVE,

BOTH SIDES OF WALL, WATERTIGHT.

12. PROVIDE P-TRAPS IN CONDENSATE DRAIN PIPING AT EACH AHU

UNLESS THE AHU IS EQUIPPED WITH AN INTERNAL TRAP.

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EPROJECT NO., 1862691

CONSTR. CONTR. NO.

NAYrAC DRAWING NO.

12931267

SHEET 05 OF 12

M-103 DRAWfOIW REVl5ION: 12 APfilL 2018

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W/ADAPTER CURB

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RETURN OPENING

i---- ADAPTER CURB@

(E) ROOF CURB

(E) ROOF DECK

Q NEW WORK NOTES

0 REPLACE EXISTING ROOF TOP UNIT WITH 40 TON ROOF TOP UNIT.

0 PROVIDE A TRANSITION FRAME ON EXISTING ROOF CURB TO

TRANSITION FROM NEW ROOFTOP UNIT TO EXISTING DUCT WORK.

THE TRANSITION CURB MUST BE CONSTRUCTED OF MINIMUM 14

GAGE HOT DIP GALVANIZED STEEL WITH FULLY WELDED WATERTIGHT

JOINTS. TRANSITION CURB MUST BE DESIGNED AND FABRICATED TO

RESIST LOADS AS SPECIFIED IN ASCE 7 LATEST EDITION TAKING

INTO CONSIDERATION, INCLUDING BUT NOT LIMITED TO DEAD LOADS,

LIVE LOADS, IMPACT LOADS, WIND LOADS AND SEISMIC LOADS.

ROOF TOP UNIT MUST BE POSITIONED SUCH THAT IT'S CENTER OF

GRAVITY ALONG THE LENGTH IS CENTERED OVER THE EXISTING

ROOF CURB. EXISTING CURB OUTER TO OUTER DIMENSIONS

MEASURE 22'-5" BY 7'-5".

0 CENTER CENTROID OF NEW EQUIPMENT OVER CENTER OF EXISTING

CURB.

0 INSTALL FLEXIBLE DUCT CONNECTOR BETWEEN NEW ROOF TOP UNIT

TO ROOF DUCTING.

NOTES:

1. VENTURI TYPE MANUAL BALANCING VALVES SHALL BE INSTALLED IN COMPLIANCE WITH THE

DEVICE MANUFACTURER'S INSTALLATION RECOMMENDATIONS AND/OR REQUIREMENTS FOR

STRAIGHT LENGTH OF UNOBSTRUCTED PIPE WITHOUT INLINE APPURTENANCES (CONTROL VALVES, FLANGES, TEMPERATURE WELLS, ETC.) UP AND DOWNSTREAM OF THE VALVE. SINCE OAU AND

AHU HEATING COILS PIPED IN SERIES, ONLY PROVIDE VENTURI BALANCING VALVE WHERE SHOWN

ON PLAN FOR AHU HEATING COIL.

2. PROVIDE UNIONS AND/OR FLANGED PIPE CONNECTIONS TO ALLOW PIPING SECTIONS TO BE

EASILY REMOVED TO PERMIT REMOVAL OF COIL.

3. ARRANGE PIPING TO AVOID BLOCKING ACCESS DOORS FROM BEING FULLY OPEN (MIN. 95") AND

TO ALLOW THE COIL TO BE EASILY REMOVED.

4. THIS DETAIL IS ONLY PROVIDED TO SHOW THE COMPONENTS THAT ARE REQUIRED TO BE

INSTALLED IN THE PIPING SERVING EACH HEATING COIL. IT IS NOT INTENDED TO SHOW THE

EXACT LOCATION WHERE THE CONTROL VALVE, BALANCING VALVE, STRAINER, AND ISOLATION

VALVES ARE TO BE INSTALLED IN THE PIPING SYSTEM.

HOT WATER COIL PLUMBING

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EPROJECT NO., 1862691

CONSTR. CONTR. NO.

NAYrAC DRAWING NO.

12931268

SHEET 06 OF 12

M-301 DRAWfOIW REVl5ION: 12 APfilL 2018

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PACKAGED VAV MULTIZONE ROOFTOP AIR C ONDTIONING UNITS

1.01 SECTION INCLUDES

A. MULTIZONE ROOFTOP UNIT.

B. HOT WATER ELECTRIC HEATER.

C. REFRIGERATION COMPONENTS.

D. UNIT OPERATING CONTROLS.

E. ROOF CURB.

F. ELECTRICAL POWER CONNECTIONS.

G. OPERATION AND MAINTENANCE SERVICE.

H. CONTROLS AND INSTRUMENTATION.

I. EQUIPMENT WIRING SYSTEMS.

1.02 REFERENCES

A. ANSI/NFPA 90A - INSTALLATION OF AIR CONDITIONING AND

VENTILATION SYSTEMS.

B. ARI 360 - UNITARY AIR-CONDITIONING EQUIPMENT.

C. ANSI/ ASH RAE/I ESNA 90.1-1999 - ENERGY STANDARD FOR NEW

BUILDINGS EXCEPT LOW-RISE

RESIDENTIAL BUILDINGS.

D. ANSI/ASHRAE 90A . ENERGY CONSERVATION IN NEW BUILDING

DESIGN

1.03 SUBMITTALS

A. SUBMIT DRAWINGS INDICATING COMPONENTS, DIMENSIONS, WEIGHTS

AND LOADINGS, REQUIRED CLEARANCES, AND LOCATION AND SIZE OF

FIELD CONNECTIONS.

B. SUBMIT PRODUCT DATA INDICATING RATED CAPACITIES, WEIGHTS,

ACCESSORIES, AND ELECTRICAL REQUIREMENTS.

C. SUBMIT MANUFACTURER'S INSTALLATION INSTRUCTIONS.

1.06 OPERATION AND MAINTENANCE DATA

A. SUBMIT OPERATION AND MAINTENANCE DATA.

B. INCLUDE MANUFACTURER'S DESCRIPTIVE LITERATURE, START-UP

AND OPERATING INSTRUCTIONS, INSTALLATION

INSTRUCTIONS, AND MAINTENANCE PROCEDURES.

1.04 HANDLING

A. COMPLY WITH MANUFACTURER'S INSTALLATION INSTRUCTIONS FOR

RIGGING, UNLOADING, AND

TRANSPORTING UNITS.

B. PROTECT UNITS FROM PHYSICAL DAMAGE. LEAVE FACTORY

SHIPPING COVERS IN PLACE UNTIL

INSTALLATION.

1.05 WARRANTY

A. PROVIDE A FULL PARTS WARRANTY FOR ONE YEAR FROM

START-UP OR 18 MONTHS FROM SHIPMENT, WHICHEVER OCCURS

FIRST .

1.06 MAINTENANCE SERVICE

A. FURNISH COMPLETE SERVICE AND MAINTENANCE OF PACKAGED

ROOFTOP UNITS FOR ONE YEAR FROM

DATE OF SUBSTANTIAL COMPLETION BY CONTRACTOR.

B. INCLUDE MAINTENANCE ITEMS AS OUTLINED IN MANUFACTURER'S

OPERATING AND MAINTENANCE DATA.

1.7 EXTRA MATERIALS

A. PROVIDE ONE SET OF FILTERS.

PART 2 PRODUCTS

2.01 SUMMARY

A. THE CONTRACTOR SHALL FURNISH AND INSTALL PACKAGE

MULTIZONE VAV ROOFTOP AIR CONDITIONING UNIT(S) AS SHOWN AND

SCHEDULED ON THE CONTRACT DOCUMENTS. THE UNIT(S) SHALL BE

INSTALLED IN

ACCORDANCE WITH THIS SPECIFICATION AND PERFORM AT THE

SPECIFIED CONDITIONS AS SCHEDULED.

B. PACKAGED ROOFTOP AIR CONDITIONING UNITS SHALL BE

MANUFACTURED BY MANUFACTURER WITH AT LEAST 15 YEARS

EXPERIENCE.

I\Jnl/'c'�.c1F =--, 'J '·. '�·· .. \ ·-·' ·

PACKAGED VAV MULTIZONE ROOFTOP AIR C ONDTIONING UNITS

2.02 GENERAL UNIT DESCRIPTION

A. UNIT(S) FURNISHED AND INSTALLED SHALL BE COOLING ONLY

PACKAGED ROOFTOP AS SCHEDULED ON CONTRACT DOCUMENTS AND

THESE SPECIFICATIONS. COOLING CAPACITY RATINGS SHALL BE BASED

ON ARI STANDARD 360 TESTING REQUIREMENTS. UNIT(S) SHALL

CONSIST OF INSULATED WEATHERTIGHT CASING WITH COMPRESSORS,

AIR COOLED CONDENSER COIL, CONDENSER FANS, EVAPORATOR COIL,

FILTERS,

SUPPLY AND/OR EXHAUST MOTORS AND DRIVES, UNIT CONTROLS.

B. UNIT(S) SHALL BE SINGLE PIECE CONSTRUCTION AS

MANUFACTURED AT THE FACTORY. SITE ASSEMBLED SUBASSEMBLIES

WILL NOT BE ALLOWED.

C. UNIT(S) SHALL BE FACTORY RUN TESTED TO INCLUDE THE

OPERATION OF ALL FANS, COMPRESSORS, HEAT EXCHANGERS,

SAFETIES, LIMITS, AND CONTROL SEQUENCES.

D. UNIT(S) SHALL HAVE LABELS, DECALS, AND/OR TAGS TO AID IN

THE SERVICE OF THE UNIT AND INDICATE

CAUTION AREAS.

E. UNITS SHALL BE DEDICATED DOWN FLOW OR DEDICATED

HORIZONTAL AIRFLOW AS MANUFACTURED.

F. UNIT(S) SHALL BE ASHRAE 90.1 COMPLIANT

2.03 UNIT CASING

A. CABINET: GALVANIZED STEEL, PHOSPHATIZED, AND FINISHED WITH

A PRE-APPLIED BAKED

POLYURETHANE ENAMEL. CABINET SURFACE SHALL BE TESTED 500

HOURS IN SALT SPRAY IN COMPLIANCE

WITH ASTM B117. FULLY GASKETED REMOVABLE ACCESS PANELS.

STRUCTURAL MEMBERS SHALL BE 14

GAUGE WITH ACCESS DOORS AND REMOVABLE PANELS OF MINIMUM 18

GAUGE. PROVIDE 1 /2 INCH

THICK FOIL FACED FIBERGLASS INSULATION ON ALL EXTERIOR PANELS

AND ROOF IN CONTACT WITH THE

RETURN AND CONDITIONED AIR STREAM. CABINET TOP COVER SHALL

BE ONE PIECE CONSTRUCTION OR

WHERE SEAMS EXITS, IT SHALL BE DOUBLE HEMMED AND GASKET

SEALED.

2.04 ELECTRICAL POWER CONNECTIONS

A. SINGLE POINT POWER SUPPLY TO THE UNIT SHALL BE 3 PHASE.

UNIT SHALL BE PROVIDED WITH INTERNAL 3 TRANSFORMER(S) AS

REQUIRED FOR LOW VOLTAGE CONTROL OPERATIONS.

B. PROVIDE A FACTORY-INSTALLED NON-FUSED DISCONNECT SWITCH

WHICH SATISFIES NEC REQUIREMENTS

FOR A SERVICE DISCONNECT SWITCH. DISCONNECT HANDLE SHALL BE

ACCESSIBLE THROUGH THE CONTROL

BOX DOOR SUCH THAT HIGH VOLTAGE POWER MUST BE OFF BEFORE

DOOR CAN BE OPENED.

2.05 AIR FILTERS

A. AIR FILTERS: FILTERS SHALL MOUNT INTEGRALLY WITHIN UNIT AND

BE ACCESSIBLE THROUGH HINGED

ACCESS PANELS. FILTERS SHALL BE TWO INCH THICK STANDARD

EFFICIENCY THROWAWAYS.

2.06 FANS - SUPPLY

A. PROVIDE FORWARD-CURVED FAN MOUNTED WITH FIXED PITCH

SHEAVE DRIVE ASSEMBLY. COMPLETE

FANS ASSEMBLIES SHALL BE STATICALLY AND DYNAMICALLY BALANCED.

B. FAN SHAFT SHALL BE MOUNTED ON GREASE LUBRICATED BALL

BEARINGS.

C. ALL MOTORS SHALL BE CIRCUIT BREAKER PROTECTED.

2.07 HOT WATER HEATER COIL

A. PROVIDE HEAVY DUTY ALUMINUM FINS MECHANICALLY BONDED TO

INTERNALLY ENHANCED, COPPER TUBES.

B. PROVIDE A HOT WATER CONTROL VALVE AND CONTROL CIRCUIT.

FACTORY PRESSURE AND LEAK TEST COILS.

PACKAGED VAV MULTIZONE ROOFTOP AIR CONDTIONING UNITS

2.08 EVAPORATOR COIL

A. PROVIDE HEAVY DUTY ALUMINUM FINS MECHANICALLY BONDED TO

INTERNALLY ENHANCED, COPPER TUBES.

B. PROVIDE A THERMOSTATIC EXPANSION VALVE FOR EACH

REFRIGERATION CIRCUIT. FACTORY PRESSURE AND LEAK TEST COILS AT

300 PSI.

2.09 CONDENSER SECTION

A. PROVIDE ALUMINUM FINS MECHANICALLY BONDED TO COPPER

TUBES. FACTORY PRESSURIZE AND LEAK

TEST TO 450 PSIG.

B. PROVIDE INTEGRAL SUBCOOLING CIRCUIT(S) TO PREVENT

PREMATURE REFRIGERANT FLASHING AND TO INSURE MAXIMUM

OPERATING EFFICIENCY.

C. PROVIDE VERTICAL DISCHARGE, DIRECT DRIVE FANS WITH STEEL

BLADES, AND THREE PHASE MOTORS. FANS 4 SHALL BE STATICALLY

BALANCED. MOTORS SHALL BE PERMANENTLY LUBRICATED, WITH

BUILT-IN CURRENT AND THERMAL OVERLOAD PROTECTION IN A

WEATHER TIGHT CASING.

2.10 REFRIGERATION SYSTEM

A. COMPRESSOR: HERMETIC COMPLIANT SCROLL COMPRESSOR

OPERATING AT 3600 RPM WITH ISOLATED MOUNTING, CENTRIFUGAL OIL

PUMP, OIL SIGHT GLASS, AND DISCHARGE VALVE.

B. PROVIDE WITH THERMOSTATIC TEMPERATURE MOTOR WINDING

CONTROL FOR PROTECTION AGAINST EXCESSIVE TEMPERATURES CAUSED

BY OVER-/UNDER VOLTAGE OPERATION OR LOSS OF CHARGE. ALSO

PROVIDE HIGH AND LOW PRESSURE CUTOUTS.

2.11 VAV ZONE SYSTEM

A. ZONING LAYOUT SHALL USE ZONE CONFIGURATION OF EXISTING

UNIT AND CURB

B. ZONES SHALL BE CONTROLLED BY LOW LEAK CUSTOM RUSKIN

BLADE DAMPERS, WITH ALUMINUM AIRFOIL

CONSTRUCTION, STAINLESS STEEL JAMBS AND RUBBER SEALS .

C. ALL ZONES SHALL INCORPORATE FACTORY MOUNTED BELIMO

ACTUATORS, WIRED TO UNIT CONTROL PANEL

AND TESTED FOR PROPER OPERATION PRIOR TO SHIPMENT.

D. VAV SYSTEM SHALL BE FACTORY PACKAGED AND FULLY

PROGRAMMED AND TESTED FOR OPERATION PRIOR

TO SHIPMENT. PROGRAMMING LOG SHALL BE PROVIDED .

E. ZONED REHEAT SYSTEM SHALL BE INSTALLED WITHIN EACH VAV

ZONE. ALL HEAT MODULES SHALL BE

EASILY REMOVABLE FROM UNIT FOR INSPECTION AND SERVICE. EACH

HEAT MODULE SHALL BE UL

LISTED, AND UNIT POWERED AND CONTROLLED.

2.12 EXHAUST /RETURN SECTION

A. PROVIDE NON-MODULATING EXHAUST FANS CAPABLE OF

EXHAUSTING UP TO 50% OF NOMINAL AIR FLOW.

BAROMETRIC DAMPERS SHALL BE UTILIZED AT FAN OUTLET TO

PREVENT BACKDRAFT CONDITIONS. EXHAUST

FANS SHALL BE FACTORY INSTALLED AND CAPABLE OF 3 SPEEDS:

HIGH, MEDIUM, AND LOW. OPERATION

OF EXHAUST FANS SHALL BE ON OR OFF BASED ON ECONOMIZER

OUTDOOR AIR DAMPER POSITION. ON/OFF

SETPOINT SHALL BE SELECTABLE THROUGH A REMOTE POTENTIOMETER

LOCATED IN THE RETURN AIR SECTION.

11.�·L·--iF--. ·

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PACKAGED VAV MULTIZONE ROOFTOP AIR CONDTIONING UNITS

2.13 OUTDOOR AIR SECTION

A. PROVIDE A FULLY INTEGRATED FACTORY INSTALLED 100%

MODULATING OUTSIDE AIR ECONOMIZER WITH

UNIT RETURN AND BAROMETRIC RELIEF AIR DAMPERS. ECONOMIZER

OPERATION SHALL BE THROUGH

MICROPROCESSOR BASED PRIMARY TEMPERATURE CONTROLS THAT

AUTOMATICALLY MODULATE DAMPERS TO

MAINTAIN SPACE TEMPERATURE CONDITIONS.

1. PROVIDE ECONOMIZER WITH DRY BULB CONTROL.

2. PROVIDE ADJUSTABLE MINIMUM POSITION CONTROL LOCATED

REMOTELY IN THE SPACE.

3. PROVIDE SPRING RETURN MOTOR FOR OUTSIDE AIR DAMPER

CLOSURE DURING UNIT SHUTDOWN OR

POWER INTERRUPTION.

2.14 DAMPERS

A. PROVIDE DAMPERS WITH A LEAKAGE RATE NOT TO EXCEED 2.5%

OF NOMINAL AIRFLOW. LEAKAGE RATES

SHALL BE BASED ON ONE INCH W.C. STATIC PRESSURE.

B. LEAKAGE RATE SHALL BE DETERMINED IN ACCORDANCE WITH AMCA

STANDARD 575.

2.15 UNIT CONTROLS

A. SIEMENS DDC CONTROLS SHALL BE PROVIDED FOR ALL 24 VOLT

CONTROL FUNCTIONS. THE

RESIDENT CONTROL ALGORITHMS SHALL MAKE ALL HEATING, COOLING

AND/OR VENTILATING DECISIONS IN

RESPONSE TO ELECTRONIC SIGNALS FROM SENSORS MEASURING

INDOOR AND OUTDOOR TEMPERATURES.

THE CONTROL ALGORITHM MAINTAINS ACCURATE TEMPERATURE

CONTROL, MINIMIZES DRIFT FROM SET

POINT AND PROVIDES BETTER BUILDING COMFORT. A CENTRALIZED

MICROPROCESSOR SHALL PROVIDE ANTI-

SHORT CYCLE TIMING AND TIME DELAY BETWEEN COMPRESSORS TO

PROVIDE A HIGHER LEVEL OF

MACHINE PROTECTION.

B. VARIABLE AIR VOLUME CONTROLS: PROVIDE ALL NECESSARY

CONTROLS TO OPERATE A VAV-MULTIZONE

ROOFTOP FROM SUPPLY AIR TEMPERATURE AND SPACE TEMPERATURE

INCLUDING SUPPLY AIR

MICROPROCESSOR CONTROLLER, AND SUPPLY AIR SENSOR. THE

MICROPROCESSOR SHALL COORDINATE THE

ECONOMIZER CONTROL AND STAGES OF COOLING WITH SUPPLY AIR

TEMPERATURE RESET CAPABILITY BASED

UPON SPACE TEMPERATURE.

C. THE FOLLOWING SETPOINTS SHALL BE ACCESSIBLE IN THE UNIT

CONTROL PANEL: SUPPLY AIR COOLING

SETPOINT, MORNING WARMUP SETPOINT, STATIC PRESSURE SETPOINT,

AND STATIC PRESSURE DEADBAND.

D. UNIT SHALL HAVE FIVE INDEPENDENT ZONES OF CONTROL. ALL

ZONES SHALL HAVE A WIRELESS (WIRED) SPACE THERMOSTAT.

2.16 BUILDING MANAGEMENT SYSTEM

A. INTERFACE CONTROL MODULE TO INTEGRATE WITH EXIST. SIEMENS

BASEWIDE/BUILDING DDC SYSTEM TO BE FURNISHED [FACTORY

MOUNTING] BY ROOFTOP UNIT MANUFACTURER. THROUGH SIEMENS DDC

CONTROLS, ALL ENERGY

MANAGEMENT FUNCTIONS (SPECIFIED IN ENERGY MANAGEMENT SECTION)

SHALL BE PERFORMED. SEE

BUILDING AUTOMATION AND AUTOMATIC TEMPERATURE CONTROL SYSTEM

SPECIFICATIONS. THE

INTERFACE MODULE WITH NECESSARY CONTROLS AND SENSORS SHALL

ALL BE FACTORY MOUNTED (NOT FIELD

MOUNTED). IF NOT FURNISHED BY ROOFTOP UNIT MANUFACTURER,

THIS SHALL BE FURNISHED BY ENERGY

MANAGEMENT SYSTEM CONTRACTOR FOR FIELD MOUNTING BY SAID

CONTRACTOR AND RATED FOR SERVICE

UP TO 140 F. THE ONLY FIELD CONNECTION TO ENERGY MANAGEMENT

SYSTEM SHALL BE A SINGLE

COMMUNICATION LINK.

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EPROJECT NO., 1862691

CONSTR. CONTR. NO.

NAYrAC DRAWING NO.

12931269

SHEET 07 OF 12

M-501 DRAWfOIW REVl5ION: 12 APfilL 2018

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CONTROLLER

I

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CU-1

.D.

DJ

SIEMENS

DDC

CONTROLLER

I I [±J

0 0 0

MODEMJ'------

□ TELEPHONE JACK □-------

HOT WATER

SYSTEM

CONTROLLER

n

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DJ

[I]

[TI

[±J ffiJ

4 5

NEW WORK NOTES

PROVIDE BUILDING DOC CONTROLLER. MOUNT IN THE FIRST FLOOR MECHANICAL

ROOM. THE CONTROL MUST MONITOR ALL POINTS ON THE SYSTEMS AND

COMMUNICATE THE DATA REMOTELY VIA TELEPHONE LINE.

PROVIDE INTERFACE FOR COMMUNICATION OF THE MULTIZONE AIR HANDLING UNIT

CONTROLS DATA. COMMUNICATION MUST UTILIZE THE ASHRAE STANDARD BACNET

PROTOCOL. THE MULTIZONE AIR HANDLING UNIT CONTROLS MUST BE PROVIDED BY

THE MANUFACTURER.

PROVIDE AN EQUIPMENT CONTROLLER FOR THE COMPUTER ROOM UNITS 1 SYSTEM

MONITOR. CONNECT TO DOC SERVER AND BUILDING CONTROLLER. THE

CONTROLLER MUST INDEPENDENTLY MONITOR, EXHAUST FAN STATUS, ZONE

TEMPERATURES AND FOR EQUIPMENT ALARMS.

PROVIDE DOC CONTROLS, 3-WAY CONTROL VALVE & PIPING FOR THE HOT WATER

SYSTEM.

SOFTWARE:

PROVIDE DOC SOFTWARE.

TRAINING:

1. PROVIDE (2) 8 HOUR TRAINING DAYS, MATERIALS FOR 5 PEOPLE, HANDS ON, ON SITE WITHIN

30 DAYS OF COMMISSIONING.

DOC CONTROL SYSTEM

[3J [[]

2. PROVIDE (4) 4 HOUR TRAINING SESSIONS, FOR 2 PEOPLE, MANUFACTURER SELECTED SITE

WITHIN 120 MILE OF JOB SITE, EACH SESSION TO BE SCHEDULE BY GOVERNMENT WITH 1

MONTHS NOTICE, AT ANY TIME WITHIN 5 YEARS.

N.T.S.

MULTIZONE HVAC UNIT

SUPPLY FAN O.A. COOLING

ID

TOTAL E.S.P. FAN E.A.T. E.A. T. L.A.T L.A.T TOTAL SEN E.A. T.

CFM in.we. HP CFM D.B. W.B. D.B. W.B. MBH MBH "F

MAHU-1 11520 3 15 2200 80'F 65'F 55F 53'F 383 312 61'F

NOTES:

1. HEATING COIL IN MULTI-ZONE POSITION

2. ESP DOES NOT INCLUDE FILTERS

3. NEMA STARTER SIZE 3

4. PROVIDE 2'' DEEP AUXILIARY S.S DRAIN PAN WITH FLOAT

SWITCH AND CONDENSATE DRAIN PIPED TO NEAREST DRAIN

5. PROVIDE MERV 13 2'' THK. HINGED FILTER ACCESS DOORS.

HEATING

L.A.T. CAP. HW

"F MBH GPM

102'F 206 40

COMPRESSORS

HW H.W. NOM MIN # TYPE

EWT LWT (tons) CMPRS

1 BO'F 160'F 40 2 SCROLL

9. CAPACITY SHALL MATCH INDOOR UNIT

CONDENSER

RE FRIG. MIN # FLA FANS

GFU 1 123

3. PROVIDE MINIMUM OF (1 DO) FREE 10 MINUTE PERSON TO PERSON TELEPHONE TECH

SUPPORT CALLS.

ELECTRICAL

POWER MAX.

REMARKSkW

460V-31!1-60Hz 25 kW 5EE NOTES

10. PROVIDE ELECTRONIC PROGRAMMABLE THERMOSTAT, FOR AUTOMATIC CONTROL OF SYSTEM AND EQUIPPED WITH THE

FOLLOWING FEATURES:

-FOUR TEMPERATURE SETTINGS PER DAILY SCHEDULE

-SELECTABLE DAILY SCHEDULES FOR WEEKDAYS, SATURDAY, & SUNDAY

-SET POINT RANGE: 45'F TO 80'F

6. PROVIDE ADDRESSABLE SMOKE DETECTOR IN SUPPLY DUCT WIRED TO MOTOR STARTER FOR AUTO SHUTDOWN. PROVIDE -DIGITAL LCD CLOCK AND PROGRAM DISPLAY -ELECTRIC RATING: 24VAC/1 .2 AMP MAX WITH BATTERY BACKUPWIRE/CONDUIT TO CONNECT TO BUILDING FIRE ALARM. -CYCLES PER HOUR ADJUSTMENT: COOLING FACTORY SET, MIN. OFF TIME= 5 MINUTES7. PROVIDE 3-WAY HOT WATER VALVE & DDC MOTORIZED ACTUATOR FOR HEATING COIL.. PROVIDE FREEZE

PROTECTION ELECTRIC HEAT TAPE 4W/FT ON HOT WATER PIPING & COIL DOWN TO ZERO DEGREES F. AMBIENT.

8. CONDENSER RATED FOR 95 DEG AMBIENT OUTDOOR AIR (COOLING)

-WALL MOUNTED WITH LOCKING THERMOSTAT GUARD

-SUBBASE: FAN ON-AUTO SWITCH/ HEAT-OFF-COOL SWITCH

11. PROVIDE SINGLE POINT CONNECTION

SPLIT SYSTEM COMPUTER ROOM HVAC UNIT

SUPPLY FAN O.A. COOLING HEATING COMPRESSORS CONDENSER ELECTRICAL

ID

TOTAL E.S. p. FAN E.A. T. E.A.T. L.A.T L.A.T TOTAL SEN E.A.T. L.A. T. CAP. HW HW H.W. NOM MIN # TYPE REFRIG. MIN #

FLA POWER

MAX.

REMARKS CFM in. we. HP CFM D.B. W.B. D.B. W.B. MBH MBH 'F 'F MBH GPM EWT LWT (tons) CMPRS FANS kW

CRU-1 6200 1 .o" 3.75 620 75'F 61 "F 52'F 44'F 127 122 70'F 102'F 206 40 180"F 160'F 40 2 SCROLL GFU 1 37.7 460V-31!1-60Hz 42 kW

CRU-2 6200 1 .o" 3.75 620 75'F 61 'F 52'F 44'F 127 122 70'F 102'F 206 40 180'F 160'F 40 2 SCROLL GFU 1 37.7 460V-3!1l-60Hz 42 kW

CU-1 23650 GFU 4 7.6 460V-3!1l-60Hz XX kW

NOTES:

1 . HEATING COIL IN RE-HEAT POSITION 9. CAPACITY SHALL MATCH INDOOR UNIT

2. ESP DOES NOT INCLUDE FILTERS 10. PROVIDE ELECTRONIC PROGRAMMABLE THERMOSTAT, FOR AUTOMATIC CONTROL OF SYSTEM AND EQUIPPED WITH THE

3. NEMA STARTER SIZE 3 FOLLOWING FEATURES:

-FOUR TEMPERATURE SETTINGS PER DAILY SCHEDULE

-SELECTABLE DAILY SCHEDULES FOR WEEKDAYS, SATURDAY, & SUNDAY

-SET POINT RANGE: 45'F TO 80°F

4. PROVIDE 2" DEEP AUXILIARY S.S DRAIN PAN WITH FLOAT

SWITCH AND CONDENSATE DRAIN PIPED TO NEAREST DRAIN

5. PROVIDE MERV 13 HINGED FILTER ACCESS DOORS. PROVIDE WATER/GLYCOL PUMP AND INSULATED PIPING.

6. PROVIDE ADDRESSABLE SMOKE DETECTOR IN SUPPLY DUCT WIRED TO MOTOR STARTER FOR AUTO SHUTDOWN. PROVIDE -DIGITAL LCD CLOCK AND PROGRAM DISPLAY

WIRE/CONDUIT TO CONNECT TO BUILDING FIRE ALARM.

7. PROVIDE 34.88 KW SUPPLEMENTAL ELECTRIC HEATER IN BOTH CRU

8. COOLER/CONDENSER (CU) RATED FOR 95 DEG AMBIENT OUTDOOR AIR (COOLING) W/ CAPACITY TO MATCH CRU-1 & 2)

9. COMPUTER ROOM UNITS ARE WATER/GLYCOL TYPE AND SHALL CONTROL HUMIDITY FROM 40 TO 60 % ADJUSTABLE.

-ELECTRIC RATING: 24VAC/1.2 AMP MAX WITH BATTERY BACKUP

-CYCLES PER HOUR ADJUSTMENT: COOLING FACTORY SET, MIN. OFF TIME= 5 MINUTES

-WALL MOUNTED WITH LOCKING THERMOSTAT GUARD

-SUBBASE: FAN ON-AUTO SWITCH/ HEAT-OFF-COOL SWITCH

11. PROVIDE SAFETY DISCONNECT SWITCH

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EPROJECT NO., 1862691

CONSTR. CONTR. NO.

NAYrAC DRAWING NO.

12931270

SHEET 08 OF 12

M-601 DRAWfOIW REVl5ION: 12 APfilL 2018

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HOT WATER SYSTEM CONTROL SCHEMATIC

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LOCAL DDC CONTROLLER

INPUTS

All SUPPLY AIR TEMP 0 Al2 MIXED AIR TEMP g Al3 SUPPLY AIR SP <C

<C Al4 AIR QUALITY SENSOR Al5 FILTER DIRTY

D11 SUPPLY FAN STATUS

D12 EXHAUST FAN STATUS

D13 COMP 1 STATUS

D14 COMP 2 STATUS

0 LOW LIMIT THERMOSTAT 0

@) ACTIVATION

D16 SMOKE DETECTOR ACTIVATION

D17 ACU EMERG. SHUTDOWN 1

D18 ACU EMERG. SHUTDOWN 2

OUTPUTS

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IA021 RETURN AIR DAMPER MOTOR

0 IA03I EXHAUST AIR DAMPER MOTOR g

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MULTIZONE ROOFTOP AIR CONDITIONING UNIT (MAHU-1) SEQUENCE OF OPERATION

THE DDC CONTROLLER MUST OPERATE THE ROOFTOP ACU.

COOLING OPERATION: THE COMPRESSORS MUST BE INTERLOCKED WITH THE SUPPLY AIR FAN MOTOR.

FOR CONDITIONS WHEN THE OA TEMPERATURE IS ABOVE 55"F; WHEN THE SUPPLY AIR

TEMPERATURE RISES ABOVE 55'F, COMPRESSOR #1 CONTRACTOR MUST BE ENERGIZED, STARTING

COMPRESSOR #1 AND CONDENSING FAN MOTORS #1 AND #2. CONDENSER FAN #2 MUST CYCLE

OFF WHEN OA TEMPERATURE IS BELOW 60'F AND CYCLE ON WHEN THE OA TEMPERATURE IS ABOVE 65'F. WHEN SWITCHING FROM ONE FAN TO TWO FAN OPERATION ON A RISE IN OA TEMPERATURE, BOTH COMPRESSORS AND THE OPERATING CONDENSING FAN MUST BE SWITCHED OFF. AFTER THE ANTI-RECYCLING TIMES OUT, BOTH FANS START WITH THE REQUIRED NUMBER OF COMPRESSORS. IF ADDITIONAL COOLING IS REQUIRED, COMPRESSOR #2 CONTACTOR MUST BE ENERGIZED, STARTING

COMPRESSOR #2. COMPRESSOR #2 MAY BE STARTED 15 SECONDS AFTER COMPRESSOR #1.

COMPRESSOR #2 WILL THEN CYCLE ON AND OFF AS REQUIRED TO MAINTAIN THE LEAVING AIR

TEMPERATURE WHILE COMPRESSOR #1 CONTINUES TO RUN. A CALL FOR HEATING FROM THE ZONE

THERMOSTAT WILL MODULATE THE COLD DECK DAMPER OPEN AND MODULATE THE HOT DECK

DAMPER CLOSED.

PROVIDE BOTH COMPRESSORS WITH MINIMUM AND ANTI-RECYCLING TIMERS. WHEN A COMPRESSOR IS STARTED, IT MUST RUN FOR NOT LESS THAN 3 MINUTES. WHEN IT STOPS, IT MUST REMAIN OFF

FOR NOT LESS THAN 3 MINUTES.

COMPRESSORS MUST NOT RUN WHEN THE OA TEMPERATURE IS BELOW 55"F AND WHEN THE

EXISTING LOW SUCTION PRESSURE SWITCH TURNS THEM OFF. WHEN POWER TO THE ACU IS ON, THE CIRCUIT TO THE CRANKCASE HEATER MUST BE ON. OPERATION MUST BE SUCH THAT WHEN

THE UNIT CALLS FOR COOLING, THE HEATER MUST BE OFF. WHEN THE COMPRESSORS ARE OFF, THE HEATERS MUST BE ON.

ECONOMIZER OPERATION: FOR CONDITIONS WHEN THE OA TEMPERATURE IS BELOW 60"F; THE OA AND RETURN AIR DAMPERS MUST BE MODULATED TO MAINTAIN THE SUPPLY AIR TEMPERATURE AT 52'F (SLIGHTLY BELOW THE MECHANICAL COOLING SETPOINT). OA DAMPER MUST BE FULLY OPEN BEFORE MECHANICAL COOLING IS ACTUATED. WHEN THE OA TEMPERATURE IS ABOVE 62°F, THE ECONOMIZER MUST BE DISABLED AND THE DAMPERS OPEN TO THEIR MINIMUM OA POSITION. WHEN

THE ECONOMIZER IS ENABLED, COMPRESSOR #2 MUST BE OFF.

ECONOMIZER SUPPLY AIR MUST BE RESET IN ACCORDANCE WITH THE FOLLOWING SCHEDULE:

OA TEMPERATURE SA TEMPERATURE

30T 52'F 40T 62'F

11.�·L·--iF--,·

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SUPPLY AIR FAN: THE FAN MUST RUN CONTINUOUSLY IN THE OCCUPIED MODE, CYCLE IN THE

UNOCCUPIED COOLING MODE, AND NOT RUN IN THE UNOCCUPIED HEATING MODE. THE SUPPLY

FAN STATIC PRESSURE SENSOR MUST REGULATE THE DUCT STATIC PRESSURE BY MODULATING

THE VFD TO MAINTAIN THE SETPOINT. SHOULD THE CONTROLS SENSE AN UNUSUALLY HIGH DUCT

PRESSURE, THEY MUST STOP THE SUPPLY FAN AND INPUT AN ALARM TO THE DOC SYSTEM.

SHOULD THE HEATING COIL DISCHARGE AIR TEMPERATURE FALL BELOW THE LOW LIMIT SETPOINT, THE CONTROLS MUST STOP THE SUPPLY FAN AND INPUT AN ALARM TO THE DOC SYSTEM.

MORNING WARM UP/COOL DOWN: ACU CONTROL MUST BE COORDINATED WITH VAV TERMINAL UNIT

SEQUENCE OF OPERATION. SEE VAV TERMINAL UNIT SEQUENCE OF OPERATION.

AIR QUALITY SENSOR: THE AQS MUST MODULATE THE ECONOMIZER DAMPERS (RA AND OA) TO

MAINTAIN THE ROOM AIR QUALITY. THE RANGE OF OPERATION (ADJUSTABLE) MUST BE 5% MINIMUM

AND 25% MAXIMUM.

EXHAUST FAN: WHEN THE BUILDING STATIC PRESSURE AT THE PRESSURE SENSOR INCREASES

ABOVE ITS SETPOINT, (0.10 INCHES WATER, ADJUSTABLE), THE VFD MUST GRADUALLY INCREASE

THE SPEED OF THE EXHAUST FAN. WHEN THE FAN COMES ON, THE EXHAUST DAMPERS MUST

OPEN. AS THE STATIC PRESSURE DECREASES, THE REVERSE MUST OCCUR.

HEATING OPERATION: ACU HOT WATER COIL CONTROL MUST BE COORDINATED WITH VAV TERMINAL UNIT SEQUENCE OF OPERATION. SEE VAV TERMINAL UNIT SEQUENCE OF OPERATION. DURING THE

"OCCUPIED" MODE, CONTROL OF THE HOT WATER COIL MUST BE TRANSFERRED TO THE SUPPLY

AIR TEMPERATURE SENSOR. A CALL FROM THE ZONE THERMOSTAT WILL MODULATE THE COLD

DECK DAMPER CLOSED AND MODULATE THE HOT DECK DAMPER OPEN.

EMERGENCY SHUTDOWN: WHEN AN EMERGENCY SHUTDOWN BUTTON IS MANUALLY DEPRESSED, THE

DOC SYSTEM MUST CLOSE THE ACU OUTSIDE AIR AND EXHAUST AIR DAMPERS AND DISABLE

OPERATION OF THE ACU. A MANUAL RESET OF THE EMERGENCY SHUTDOWN BUTTON MUST OPEN

THE ACU OUTSIDE AND EXHAUST AIR DAMPERS AND ENABLE OPERATION OF THE ACU.

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EPROJECT NO., 1862691

CONSTR. CONTR. NO.

NAYrAC DRAWING NO.

12931271

SHEET 09 OF 12

M-602 DRAWfOIW REVl51DN: 12 APfilL 2018

I u_ u_

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DEFENSE LOGISTICS

AGENCY (DLA)