NIST B226 Replace HVAC Final Submission Dwgs.pdf

PDF 3 MB Posted Jan 10, 2025

Attached to: Install ACU unit in several buildings Federal contract opportunity
Solicitation number: 1333ND25RNB190003
Issued by: Department of Commerce National Institute of Standards and Technology

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Written by GovTribe AI · Jan 10, 2025

This file contains mechanical and electrical engineering drawings for replacing HVAC equipment in Building 226 at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD. The drawings detail the replacement of three air conditioning units (ACU-12, ACU-13, and ACU-14) and associated equipment including brine pumps, electric duct heaters, and control systems.

The drawings include demolition plans, new work plans, mechanical details, equipment schedules, and control diagrams. Key specifications include new ACUs with 2-inch solid double wall construction, foam-injected panels with R-30 insulation, MERV 8 washable filters, twin belt-driven fans, and stainless steel construction throughout. The control system uses DDC (Direct Digital Control) with specific sequences for temperature and dewpoint control. The project requires phased construction with only one ACU to be demolished at a time to maintain facility operations. The electrical scope includes new power connections, motor controllers, and a new panel PA-A-F26-1 to serve the equipment. All work must be coordinated with NIST COR with 21 days advance notice required for any service interruptions.

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MEP CONSULTANTS

20251 Century Blvd #120

Germantown MD 20874 p: 877-871-4229 F: 301-560-6336

INFO@cfrengineering.com

PROJECT #19112

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MECHANICAL AND ELECTRICAL ENGINEERING CONSULTANT:

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COVER SHEET

GENERAL

226-437

CFR DWG # NIST DWG#

GENERAL

G001 226-437 COVER SHEET - GENERAL

MECHANICAL

M-001 226-438 COVER SHEET - MECHANICAL

MD-101 226-439 DEMOLITION FLOOR PLAN - MECHANICAL

M-101 226-440 NEW WORK FLOOR PLAN - MECHANICAL

M-501 226-441 DETAILS - MECHANICAL

M-502 226-442 DETAILS - MECHANICAL

M-601 226-443 SCHEDULES - MECHANICAL

M-701 226-444 CONTROLS - MECHANICAL

ELECTRICAL

E-001 226-445 COVER SHEET - ELECTRICAL

ED-100 226-446 DEMOLITION FLOOR PLAN - ELECTRICAL

E-100 226-447 NEW WORK FLOOR PLAN - ELECTRICAL

E-600 226-448 DIAGRAMS AND SCHEDULES - ELECTRICAL

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NORTH

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SITE PLAN

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NORTH

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DRAWING LIST

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NORTH

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VICINITY MAP

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UNITED STATES DEPARTMENT OF COMMERCE

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THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

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GAITHERSBURG, MD

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FINAL SUBMISSION

AutoCAD SHX Text 2021.08.20

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BUILDING 226 - ACU'S 12, 13 & 14 REPLACEMENT

AutoCAD SHX Text Gaithersburg

AutoCAD SHX Text Rockville

AutoCAD SHX Text Aspen Hill

AutoCAD SHX Text Silver Spring

AutoCAD SHX Text Bethesda

AutoCAD SHX Text Washington

AutoCAD SHX Text Arlington

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AutoCAD SHX Text Oakton

AutoCAD SHX Text Coral Hills

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PROJECT SITE

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AutoCAD SHX Text Muddy Branch Road

AutoCAD SHX Text Quince Orchard Road

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GATE "F"

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GATE "E"

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MUDDY BRANCH ROAD

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TO WASHINGTON

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SOUTH DRIVE

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EAST DRIVE

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WASHINGTON

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NATIONAL

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PIKE

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STORAGE

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CHEMICAL

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COOLING TOWER

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TOWNHOUSE

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HERCOFORM

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STATE ROAD 124

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SEPARATOR

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ISOTOPE

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VAULT

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ELEC.

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SERVICE DRIVE

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GATE "C"

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CENTER DRIVE

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STACK

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WEST DRIVE

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QUINCE

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ORCHARD

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ROAD

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SUBSTATION

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GATE

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PEPCO

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TO FREDERICK

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GATE "A"

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GATE "B"

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BUREAU DR.

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NORTH ROAD

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SOUTH DRIVE

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MUDDY BRANCH ROAD

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DIAMOND AVENUE WEST

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NO SCALE

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A132

GENERAL MECHANICAL PROJECT NOTES GENERAL MECHANICAL NOTES

NEW WORK PLAN NOTE IDENTIFICATION

MECHANICAL SYMBOLS MECHANICAL ABBREVIATIONS

DEMOLITION PLAN NOTE IDENTIFICATION

POINT OF CONNECTION TO EXISTING

END OF DEMOLITION

EXISTING TO REMAIN

EXISTING TO BE REMOVED

NEW WORK

PIPE TURN DOWN OR AWAY

PIPE TURN UP OR TOWARDS

ABV

ACU

AFF

AHU

APD

AIP

BAS

BHP

BLDG

BLW

BMS

BTU/H

CFH

CHWS/R

CONT.

DDC

DSS/R

(E)

EAT

EBT

EDH

EFF

EPO

EWT

FAP

FAS

FPI

FLA

FTR

GHS/R

GPM

HTBS/R

HWS/R

LAT

LBT

LWT

MBH

MCA

OED

PBO

PHC

PID

(R)

RPM

SCADA

SOV

TDH

TYP.

VFD

VIF

WMS

(X)

ABOVE

AIR CONDITIONING UNIT

ABOVE FINISHED FLOOR

AIR HANDLING UNIT

AIR PRESSURE DROP

ABANDONED IN PLACE

BUILDING AUTOMATION SYSTEM

BRAKE OR BOILER HORSE POWER

BUILDING

BELOW

BUILDING MANAGEMENT SYSTEM

BRITISH THERMAL UNITS PER HOUR

COOLING COIL

CONDENSATE DRAIN

CUBIC FEET PER HOUR

CHILLER

CHILLED WATER SUPPLY / RETURN

CONTINUE

CONTROL VALVE

DIRECT DIGITAL CONTROL

DIFFERENTIAL PRESSURE

DISCONNECT SWITCH

DEFROST SOLUTION SUPPLY/RETURN

EXISTING TO REMAIN

ENTERING AIR TEMPERATURE

ENTERING BRINE TEMPERATURE

ELECTRIC DUCT HEATER

EFFICIENCY

EXHAUST LOUVER

EMERGENCY POWER OFF

ENTERING WATER TEMPERATURE

FIRE ALARM

FIRE ALARM PANEL

FIRE ALARM SYSTEM

FAN COIL UNIT

FLOOR DRAIN

FINS PER INCH

FULL LOAD AMPS

FEET

FINNED TUBE RADIATOR

GAUGE

GLYCOL HEATING SUPPLY/ RETURN

GALLONS PER MINUTE

HEATING COIL

HEAD

HIGH TEMPERATURE BRINE SUPPLY/ RETURN

HEATING WATER SUPPLY / RETURN

HERTZ

INTAKE LOUVER

INCH

LEAVING AIR TEMPERATURE

LEAVING BRINE TEMPERATURE

LEAK DETECTION

LEAVING WATER TEMPERATURE

BTU/H X 1000

MINIMUM CIRCUIT AMPACITY

NORMALLY CLOSED

NORMALLY OPEN

OPEN ENDED DUCT

PUMP

PROVIDE BY OTHERS

PRE-HEAT COIL

PROPORTIONAL-INTEGRAL-DERIVATIVE

RELOCATE(D)

REVOLUTIONS PER MINUTE

SUPERVISORY CONTROL AND DATA ACQUISITION

SUPPLY FAN

SHUT OFF VALVE

STAINLESS STEEL

STORM

TOTAL DYNAMIC HEAD

TYPICAL

UNIT HEATER

VARIABLE FREQUENCY DRIVE

VERIFY IN FIELD

WIRE MESH SCREEN

EXISTING TO BE REMOVED

AREA OF WORK / MATCHLINE

PIPE CAPPED

ROOM TAG

DETAIL/VIEW TITLE

DETAIL/VIEW SCALE

DETAIL/VIEW INDENTIFICATION

NEW EQUIPMENT IDENTIFICATION

SHUT-OFF VALVE

TWO-WAY CONTROL VALVE

STRAINER

FLEXIBLE PIPE CONNECTION

CHECK VALVE

BALANCING VALVES

UNION

CONCENTRIC PIPE REDUCER

DRAIN VALVE

TEST PORT

AIR VENT

ACU-12

SUPPLY PIPING

RETURN PIPING

PIPING OR DUCTWORK HIDDEN/BELOW

S. TEST WATER PIPING UNDER ACTUAL OPERATING CONDITIONS. REPAIR LEAKS AND RETURN TO SERVICE. TEST WATER PIPING AT 125 PSI FOR 2 HOURS. MAKE REPAIRS WITH NEW MATERIALS. REPLACE LEAKING MATERIALS, DO NOT REPAIR BY PATCHING.

T. ALL NEW CONSTRUCTION SHALL MATCH BUILDING STANDARD (MATERIALS, INSTALLATION METHODS AND QUALITY). ANY MAJOR DEVIATIONS SHALL REQUIRE APPROVAL OF THE ENGINEER AND/OR BUILDING GOVERNMENT PRIOR TO PROCEEDING.

U. ALL NEW CONSTRUCTION SHALL ADHERE TO THE LATEST EDITION OF THE GOVERNMENT REQUIREMENTS. ANY DEVIATIONS FOR THESE

STANDARDS WILL REQUIRE APPROVAL FROM GOVERNMENT BEFORE PROCEEDING.

V. ALL NEW AND EXISTING WALL AND FLOOR PENETRATIONS THRU FIRE RATED WALL / FLOOR SHALL BE COMPLETELY SEALED WITH AN APPROVED U.L. LISTED FIRESTOPPING MATERIAL. ALL OTHERS SHALL BE SEALED WITH CAULK

W. ALL WORK AND MATERIAL SHALL BE PROVIDED TO ACCOMPLISH THE INTENT OF THE PLANS. WORK INDICATED HAVING MINOR DETAILS

NOT SHOWN SHALL BE PROVIDED COMPLETELY TO PERFORM THE FUNCTIONS INTENDED.

X. ALL SPRINKLER HEADS AND PIPING SHALL BE RELOCATED AS NECESSARY TO PROVIDE THE REQUIRED SCOPE OF WORK. APPROVAL

FROM THE DIVISION OF FIRE MARSHALL SHALL BE OBTAIN PRIOR TO ANY WORK.

Y. THERE SHALL BE NO BULLHEADED TEES IN ANY PIPING SYSTEM. MAIN CONTROL VALVES EFFECTING THE HEATING HOT WATER SYSTEM

SHALL HAVE A MANUAL BYPASS CONTROL VALVE.

Z. UPON INITIAL STARTUP OF BRINE PIPING SYSTEM, THE CONTRACTOR SHALL ENSURE THAT THERE IS NO LIQUID WATER IN THE SYSTEM.

DO NOT USE WATER TO TEST OR FILL THE SYSTEM. ONLY DYNALENE HFLO IS ALLOWED TO BE USED IN THIS PIPING SYSTEM.

AA. PROVIDE COMMISSIONING OF HVAC SYSTEMS AND THEIR INTERCONNECTIONS WITH OTHER BUILDING SYSTEMS WITHIN THE SCOPE OF

WORK OF THIS PROJECT.

1. SCOPE: PROVIDE AND INSTALL ALL WORK, EQUIPMENT, AND MATERIALS AS INDICATED ON THE PROJECT DRAWINGS AND IN THE SPECIFICATIONS TO PROVIDE A COMPLETELY OPERATIONAL SYSTEM. THE DRAWINGS DO NOT INDICATE EVERY FITTING, ELBOW, OFFSET, VALVE, PULL BOX OR SIMILAR COMPONENTS WHICH ARE REQUIRED TO COMPLETE THE PROJECT WORK. PREPARE FIELD CONSTRUCTION DRAWINGS IF NECESSARY FOR, OR AS REQUIRED TO, INSURE PROPER INSTALLATION. PROVIDE ALL NECESSARY OFFSETS, FITTINGS, AND AUXILIARY ITEMS SUCH AS RELAYS, CONTROL MODULES, CABINETS, ETC. TO INSTALL THE SYSTEMS AS

DIAGRAMMED AT NO ADDITIONAL COST.

2. APPLICABLE CODES AND REGULATIONS: ALL WORK SHALL BE PERFORMED IN ACCORDANCE WITH THE FOLLOWING CODES, REFERENCES AND REGULATIONS. THE CONTRACTOR SHALL COMPLY WITH THE LAWS, ORDINANCES, RULES, AND REGULATIONS OF ALL GOVERNMENTAL AUTHORITIES HAVING JURISDICTION AND OF THE PUBLIC UTILITIES HAVING JURISDICTION OVER ANY OF THE

SYSTEMS HEREIN SPECIFIED.

a. INTERNATIONAL BUILDING CODE 2018

b. INTERNATIONAL MECHANICAL CODE 2018

c. INTERNATIONAL PLUMBING CODE 2018

d. INTERNATIONAL FIRE CODE 2018

e. INTERNATIONAL FUEL GAS CODE 2018

f. NATIONAL FIRE PROTECTION ASSOCIATION

g. NATIONAL ELECTRIC CODE

h. APPLICABLE REGULATIONS WSSC AND/OR WASA

3. SITE VISITS AND COORDINATION: THE CONTRACTOR IS STRONGLY ENCOURAGED TO VISIT THE SITE AND SHALL CONFIRM AND EVALUATE EXISTING CONDITIONS AND INSTALLED EQUIPMENT, DUCTWORK, PIPING, FINISHES, ETC. PRIOR TO START OF WORK. THE CONTRACTOR IS FULLY RESPONSIBLE FOR COORDINATING HIS/HER WORK WITH THE OTHER TRADES AND EXISTING CONDITIONS. IF ANY DISCREPANCY OR CONFLICT IS DETECTED AT THE JOB SITE, IT SHOULD BE BROUGHT TO THE ATTENTION OF THE NIST COR IMMEDIATELY, PRIOR TO DOING ANY WORK, WITH RECOMMENDATIONS FOR PROPER CORRECTION FOR THE ENGINEER'S APPROVAL.

4. PROJECT BIDDING: AS THE SITE, LOCATION, SIZE AND ROUTING OF EXISTING SYSTEMS INDICATED TO HAVE NEW CONNECTIONS MADE TO THEM ARE SHOWN AS ACCURATELY AS FIELD CONDITIONS WOULD PERMIT, THE BIDDING CONTRACTORS SHALL VISIT THE SITE AND THOROUGHLY EXAMINE THE CONTRACT DRAWINGS PRIOR TO BID. THE CONTRACTORS SHALL REPORT TO THE NIST COR REPRESENTATIVE, BEFORE SUBMITTING A BID, ANY CONDITIONS WHICH MIGHT MAKE THE INSTALLATION OF THE REQUIRED EQUIPMENT NOT FEASIBLE. THE CONTRACTOR'S BIDS SHALL INCLUDE ALL NECESSARY PERMIT FEES REQUIRED TO COMPLETE THE SCOPE OF WORK, UNLESS OTHERWISE DIRECTED BY THE OWNER. COPIES OF ALL PERMITS SHALL BE SUPPLIED TO THE

GOVERNMENT PRIOR TO STARTING CONSTRUCTION.

a. UNLESS OTHERWISE SPECIFIED, THE TERM “PROVIDE” SHALL MEAN THAT THE CONTRACTOR IS REQUIRED TO FURNISH AND

INSTALL SAID EQUIPMENT.

5. EXISTING CONDITIONS: THE ENGINEERING DESIGN DRAWINGS ARE DIAGRAMMATIC IN NATURE, AND ARE NOT CONSIDERED CONSTRUCTION SHOP DRAWINGS. ALL CRITICAL DIMENSIONS SHALL BE CONFIRMED BY THE CONTRACTOR IN THE FIELD. THE LOCATION AND SIZES OF EXISTING EQUIPMENT, PIPING, DUCTWORK, FIXTURES, ETC. ARE APPROXIMATE AND SHALL BE VERIFIED AT THE JOB SITE, BY THE CONTRACTOR. CONNECTION TO, REMOVAL OR RELOCATION OF EXISTING EQUIPMENT, PIPING AND DUCTWORK SHALL BE DONE IN SUCH A MANNER AS NOT TO DAMAGE THE EXISTING FIXTURES OR EQUIPMENT. ANY EQUIPMENT, DUCTWORK, PIPING ETC. DAMAGED DUE TO THE WORK PERFORMED UNDER THIS CONTRACT SHALL BE REPAIRED OR REPLACED BY THIS CONTRACTOR TO THE SATISFACTION OF THE GOVERNMENT, AND AT NO ADDITIONAL COST THE GOVERNMENT.

b. THE CONTRACTOR SHALL PROTECT ALL EXISTING FIRE SUPPRESSION AND FIRE ALARM SYSTEMS AS NECESSARY TO AVOID FALSE ALARMS AND NUISANCE TRIPS. ALL SUCH SYSTEMS SHALL REMAIN OPERATIONAL DURING CONSTRUCTION AS REQUIRED

BY THE LOCAL FIRE MARSHAL.

6. SERVICE INTERRUPTIONS AND WORKING HOURS: PRIOR TO THE START OF WORK, CONTRACTOR SHALL OBTAIN THE PERMISSION OF THE CONTRACTING OFFICER FOR INTERRUPTION OF EXISTING SERVICES AND FOR CONNECTION TO THE SAME. CONTRACTOR SHALL COORDINATE THE TIME OF WORK AND INTERRUPTION OF SERVICES IN ACCORDANCE WITH THE INSTRUCTIONS OF THE CONTRACTING OFFICER. ALL WORK SHALL BE PERFORMED DURING NORMAL WORKING HOURS AS DEFINED BY THE CONTRACTING OFFICER. WORK PERFORMED OUTSIDE OF NORMAL WORKING HOURS SHALL BE NEGOTIATED WITH OWNER PRIOR TO THE CONSTRUCTION PHASE.

REQUIRED EXISTING SYSTEM SHUTDOWNS SHALL BE COORDINATED IN WRITING WITH THE CONTRACTING OFFICER'S REPRESENTATIVE

A MINIMUM OF 21 DAYS IN ADVANCE.

7. SCAFFOLDING, RIGGING AND HOISTING: CONTRACTOR SHALL PROVIDE ALL SERVICES REQUIRED FOR INSTALLATION, ERECTION AND DELIVERY OF ALL MATERIALS AND EQUIPMENT TO THE SITE AND FOR REMOVAL OF TRASH, CONSTRUCTION DEBRIS, WASTE, AND

DEMOLISHED ITEMS FROM THE PREMISES.

8. INSTALLATION: INSTALLATION OF EQUIPMENT, PIPING, FIXTURES, WIRING, ETC. SHALL BE DONE IN A NEAT AND WORKMANLIKE MANNER, AND SHALL CONFORM TO THE LATEST TRADE PRACTICES. ALL EQUIPMENT AND MATERIALS SHALL BE NEW, UNLESS INDICATED OTHERWISE, AND THE CURRENT MODEL, FOR WHICH REPLACEMENT PARTS IS AVAILABLE. SUBSTITUTIONS SHALL ONLY BE ACCEPTED AT THE DISCRETION OF THE CONTRACTING OFFICER OR THE ENGINEER. THE CONTRACTOR SHALL FOLLOW THE MANUFACTURER'S PUBLISHED INSTALLATION INSTRUCTIONS AND RECOMMENDATIONS, UNLESS INDICATED OTHERWISE. ALL EQUIPMENT SHALL BE

MOUNTED VIBRATION FREE.

a. THE CONTRACTOR SHALL REPAIR ALL OPENINGS IN WALLS, CEILINGS, FLOORS, ETC., WHICH ARE CREATED BY DEMOLITION AND/OR NEW PROJECT WORK. THE REPAIRS SHALL BE WITH MATERIALS AND FINISHED TO MATCH EXISTING. OPENINGS AND PENETRATIONS IN FIRE RATED PARTITIONS OR DUCTWORK SHALL BE SEALED WITH U.L. APPROVED FIRE STOPPING MATERIAL TO MAINTAIN FIRE RESISTANT INTEGRITY. DUCTWORK AND PIPING SHALL BE CAPPED, SEALED AIR AND WATERTIGHT AND

INSULATED TO MATCH EXISTING.

b. ALL EQUIPMENT AND DEVICES SHALL BE INSTALLED TO PROVIDE THE MANUFACTURER'S REQUIRED SERVICE CLEARANCES, AND ANY AIR AND WATER BALANCING DEVICES SHALL BE ACCESSIBLE FOR ADJUSTMENT. PROVIDE ACCESS DOORS IN DRYWALL CEILINGS AND PARTITIONS AS REQUIRED TO SERVICE EQUIPMENT, BALANCE DIFFUSERS, AND EXPOSED JUNCTION BOXES.

COORDINATE THE EXACT LOCATIONS AND STYLE OF FLANGELESS ACCESS DOORS WITH THE NIST COR.

c. THE CONTRACTOR SHALL INSTALL ALL DUCTWORK, PIPING, RACEWAYS, CIRCUITRY, CONDUIT, ETC., AS HIGH AS POSSIBLE TO

MAXIMIZE HEADROOM.

9. PROJECT CLEANING: ALL MATERIAL NOT TO BE USED SHALL BE REMOVED FROM THE SITE AND ALL DEBRIS SHALL BE CLEARED. THE AREA OF WORK SHALL BE LEFT IN CLEAN CONDITION PRIOR TO TURNOVER TO OWNER. UPON COMPLETION OF THE WORK, THE CONTRACTOR SHALL THOROUGHLY CLEAN THE CONTRACT AREA AND ALL OTHER AREAS USED FOR STORAGE, STAGING, ETC. THIS SHALL INCLUDE, BUT NOT BE LIMITED TO WASHING AND/OR REPAIRING GLASS, REMOVING SPOTS AND STAINS, CLEANING ALL FIXTURES AND WASHING ALL FLOORS, WALLS AND CEILINGS IF APPROPRIATE. THE CONTRACTOR SHALL REMOVE DEBRIS EACH DAY

AND/OR AT THE DIRECTION OF THE NIST COR.

10. PROJECT CLOSEOUT, COMMISSIONING, AND PUNCH LISTS: UPON COMPLETING APPROXIMATELY 75% OF THE REQUIRED WORK, THE CONTRACTOR SHALL NOTIFY THE NIST COR IN ORDER TO SCHEDULE A PRE-FINAL REVIEW OF CONSTRUCTION. NO WORK SHALL BE CONCEALED BY CEILINGS, WALLS, ETC. FINAL REVIEW SHALL BE SCHEDULED AT 100% COMPLETION OF CONSTRUCTION. ALL PUNCH

LIST ITEMS MUST BE ACCOMPLISHED PRIOR TO FINAL ACCEPTANCE.

a. ALL EQUIPMENT WARRANTIES AND OPERATIONS AND MAINTENANCE MANUALS SHALL BE FULLY TRANSFERRED TO THE CONTRACTING OFFICER PRIOR TO FINAL ACCEPTANCE. ALL EQUIPMENT, MATERIALS AND WORKMANSHIP SHALL BE GUARANTEED IN FULL FROM DEFECT FOR ONE YEAR FROM THE DATE OF FINAL ACCEPTANCE OF THIS WORK BY THE

CONTRACTING OFFICER.

b. UNLESS OTHERWISE SPECIFIED IN THE COMMISSIONING SPECIFICATIONS, THE CONTRACTOR SHALL TEST ALL EQUIPMENT INSTALLED UNDER THIS CONTRACT AND DEMONSTRATE TO THE CONTRACTING OFFICER ITS PROPER OPERATION(S).

c. PROVIDE THREE (3) OPERATION AND MAINTENANCE MANUALS IN 3-RING BINDER, WITH SUBJECT INDEX AND TABS. LIST ALL DESIGN FIRMS, CONTRACTORS AND PRIMARY SUPPLIERS; PROVIDE A POINT OF CONTACT WITH PHONE NUMBER AND E-MAIL ADDRESS FOR EACH FIRM. INCLUDE WARRANTY STATEMENTS, COPY OF APPROVED SUBMITTAL AND OPERATION AND MAINTENANCE PROCEDURES FOR EACH PIECE OF EQUIPMENT. INCLUDE A COPY OF THE FINAL, APPROVED WATER AND AIR

BALANCE REPORT.

d. PROVIDE PREVENTATIVE MAINTENANCE MANUALS SEPARATE FROM OPERATION AND MAINTENANCE MANUALS. PREVENTATIVE

MAINTENANCE MANUALS SHALL BE TURNED OVER TO THE GOVERNMENT CONTRACTING OFFICER.

11. PROJECT WARRANTY: ALL WORK SHALL BE FULLY WARRANTED FOR A PERIOD OF ONE YEAR UNLESS SPECIFICALLY NOTED OTHERWISE. DURING THE CORRECTION PERIOD, THE CONTRACTOR SHALL CORRECT ANY WORK FOUND NOT TO BE IN ACCORDANCE WITH THE CONTRACT DOCUMENTS BY REPAIRING OR REPLACING THE DEFECTIVE WORK AT NO ADDITION TO THE CONTRACT SUM. ALL MANUFACTURE EQUIPMENT WARRANTIES SHALL BE TRANSFERRED TO THE CONTRACTING OFFICER UPON SUBSTANTIAL COMPLETION.

THE WARRANTY SHALL BEGIN AT SUBSTANTIAL PROJECT COMPLETION.

TITLE

1/4" = 1' - 0"

DETAIL OR ENLARGED PLAN CALLOUT

M-101

SHUT-OFF VALVE IN VERTICAL

THREE-WAY CONTROL VALVE

GENERAL MECHANICAL NOTES

A. PROVIDE FIRE STOPPING FOR ALL PIPE PENETRATIONS THROUGH WALLS AND FIRE-RATED WALLS AND FLOOR SLABS. ALL

PENETRATIONS SEALED/CAULKED BY FM CERTIFIED INSTALLER.

B. INSULATION FLAME/SMOKE RATING: PROVIDE COMPOSITE MECHANICAL INSULATION JACKETS, COVERINGS, SEALERS, MASTIC, AND ADHESIVES WITH FLAME-SPREAD INDEX OF 25 OR LESS AND SMOKE DEVELOPED INDEX OF 50 OR LESS AS TESTED BY ASTM E4 AND THE

APPROVED METHOD OF NFPA 255. INSULATION MUST BE U.L. LISTED AND LABELED.

C. PIPING PASSING THROUGH AREAS OF RENOVATION AND SERVING ADJACENT SPACES SHALL BE PROTECTED IN PLACE. WHERE IT IS DETERMINED THAT THESE DUCTWORK AND PIPING MUST BE RELOCATED, CONTRACTOR SHALL REROUTE AND RESTORE SERVICES WITH

MINIMAL DISRUPTION. COORDINATE WORK WITH THE GOVERNMENT AND APPROPRIATE USERS.

D. BALANCING: SYSTEM SHALL BE BALANCED TO DELIVER WATER QUANTITIES INDICATED ON DRAWINGS. WORK SHALL BE PERFORMED BY FIRM(S) CERTIFIED BY THE NATIONAL ENVIRONMENTAL BALANCING BUREAU (NEBB). MECHANICAL CONTRACTOR SHALL PROVIDE ALL NECESSARY BALANCING VALVES TO ACHIEVE WATER QUANTITIES INDICATED ON DRAWINGS. WATER BALANCE SHALL BE PERFORMED PRIOR TO HEATING SEASON. THE CONTRACTOR SHALL FURNISH ALL LABOR, INSTRUMENTS, TOOLS AND MATERIALS AS REQUIRED FOR

THE TESTS.

E. THE CONTRACTOR SHALL SUBMIT FOUR (4) COPIES OF SHOP DRAWINGS FOR THE FOLLOWING EQUIPMENT AND MATERIALS TO THE NIST

COR FOR REVIEW.

1. FINAL BALANCING REPORTS

2. ALL SCHEDULED EQUIPMENT AND PRODUCTS

3. PIPING, VALVES, AND INSULATION

F. INSTALL ALL EQUIPMENT IN ACCORDANCE WITH MANUFACTURERS PUBLISHED INSTALLATION LITERATURE.

G. PROVIDE ALL WORK, EQUIPMENT, AND MATERIALS INDICATED. PROVIDE ALL INTERLOCKS, RELAYS, CONTROLS, ETC., FOR A FULLY

FUNCTIONAL SYSTEM.

H. SUPPORT EQUIPMENT WITH VIBRATION ISOLATORS.

I. PROVIDE DIELECTRIC COUPLINGS AT ALL FERROUS TO NON-FERROUS PIPE CONNECTIONS AND FLANGE UNION ISOLATING JOINTS TO PREVENT ANY ELECTROLYTIC ACTION BETWEEN DISSIMILAR METAL. DIELECTRIC FITTINGS SHALL BE EQUAL TO EPCO SALES, INC. ALL CONNECTIONS TO STEEL PIPES SHALL BE MADE WITH WELDING FITTINGS. BRONZE VALVES ARE NOT ACCEPTABLE AS A DIELECTRIC

COUPLING OR BREAK.

J. PIPES PENETRATING RATED WALLS, PARTITIONS, CEILINGS, AND FLOOR SLABS SHALL BE FIRE STOPPED AT RATED OUTER SURFACES.

INSULATION ENDS SHALL BE SEALED VAPORTIGHT.

K. ALL PIPING SHALL BE IDENTIFIED AS TO SERVICE (SUPPLY OR RETURN, MAKEUP OR DRAIN, ETC) AND DIRECTION OF FLOW. SELF ADHESIVE TYPE IDENTIFICATION SHALL BE APPLIED TO PIPE INSULATION AT REGULAR INTERVALS, MAXIMUM 20 FEET BETWEEN MARKERS, OR WHEN PIPING ENTERS/EXITS ROOM, OR FOR CONVENIENCE FOR FACILITY ENGINEERS.

L. PROVIDE MANUAL AIR VENTS AT HIGH POINTS AND DRAIN VALVES AT LOW POINTS IN HYDRONIC CLOSED SYSTEMS. PROVIDE UNIONS AT

PIPE CONNECTIONS TO EQUIPMENT TO FACILITATE REMOVAL OF EQUIPMENT.

M. ALL NEW PIPING SHALL BE LABELED TO BE CONSISTENT WITH EXISTING CONDITIONS. PIPE IDENTIFICATION LABELS SHALL HAVE 2" HIGH LETTERS WITH BACKGROUND COLOR THAT CONTRASTS BOTH THE COLOR OF PAINT AND LETTERING. FLOW DIRECTIONAL ARROWS SHALL MATCH PIPE IDENTIFICATION. PAINT SHALL BE DURON EPOXY MODIFIED ENAMEL WITH COLORS DEFINED BY THE PIPING SPECIFICATIONS OR TO MATCH BUILDING STANDARD. CONFORM TO ALL ANSI STANDARDS FOR PIPE LABELING.

N. INSULATE ALL HVAC WATER, DRAIN, AND COLD WATER PIPING. EXPOSED INSULATED PIPING WITHIN 6FT OF THE FINISHED FLOOR SHALL BE COVERED WITH PVC JACKETING. ALL PIPING LOCATED IN THE ATTIC SHALL BE PROVIDED WITH A PVC JACKETING.

O. COORDINATE HOURS OF ALL WELDING, SOLDERING, BRAZING. GRINDING, AND ALL HOT WORK WITH THE GOVERNMENT. REFER TO NIST SUBORDER S7401.04. TEMPORARY POWER REQUIREMENTS MUST BE COORDINATED WITH ELECTRICAL CONTRACTOR. ALL WELDING

REQUIRES A BURN PERMIT FROM THE NIST COR.

P. ALL PIPING JOINTS SHALL BE LEAK TESTED PRIOR TO BEING PUT IN SERVICE. ALL PIPING SYSTEMS SHALL BE PRESSURE TESTED, TO TWICE THE MAXIMUM SYSTEM OPERATING PRESSURE, AND FLUSHED PRIOR TO SYSTEM STARTUP.

Q. PROVIDE 1-1/2" ROUND BRASS VALVE IDENTIFICATION TAGS FOR ALL NEW VALVES.

R. SUPPORT ALL NEW PIPING FROM EXISTING BUILDING STRUCTURE AT A MAXIMUM OF 10'-0" INTERVALS OR AS REQUIRED TO PREVENT

SAGGING.

SECTION VIEW CALLOUT

M-301

DUCTWORK (20" IS VISIBLE DIMENSION,

SUPPLY AIR DUCTWORK TURNS UP OR TOWARDS

EXHAUST AIR DUCTWORK TURNS UP OR TOWARDS

SUPPLY AIR DUCTWORK TURNS DOWN OR AWAY

EXHAUST AIR DUCTWORK TURNS DOWN OR AWAY

MANUAL VOLUME DAMPER

DROP/OFFSET IN DUCTWORK

20"x12"

TRANSITION FITTING

SQUARE TO ROUND DUCTWORK TRANSITION FITTING

SQUARE ELBOW WITH TURNING VAVES

SHORT RAIDUS ELBOW

ACCESS DOOR OR PANEL

AIRFLOW DIRECTION

PARALLEL BLADE CONTROL DAMPER

OPPOSED BLADE CONTROL DAMPER

12" IS THE DIMENSION INTO THE PAGE)

ANGLE VALVE

PUMP

SWITCH

TEMPERATURE SENSOR

DIFFERENTIAL PRESSURE SENSOR

SD SMOKE DETECTOR

MOTORIZED DAMPER

T TEMPERATURE SENSOR

PHASING NOTES

A. CONTRACTOR SHALL COORDINATE WITH THE NIST COR FOR APPROPRIATE PHASING OF CONSTRUCTION, SHUTDOWN REQUIREMENTS, AND TEMPORARY EQUIPMENT, TO ENSURE THE FACILITY FUNCTIONS AND OPERATIONS. CONTRACTOR SHALL ONLY DEMOLISHED ONE AIR HANDLER AT A TIME, AND SHALL USE THE OLD AIR HANDLERS AS A GUIDE FOR THE INSTALLATION OF THE NEW AHUs. ONCE NIST IS SATISFIED WITH THE FIRST NEW AHU INSTALLATION, THEN THE CONTRACTOR SHALL DEMOLISH THE REMAINING TWO (2) AHUs.

TEMPERATURE GAGE

PRESSURE GAGE

BALANCING VALVES

PRESSURE REDUCING VALVES

MEP CONSULTANTS

20251 Century Blvd #120

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PROJECT #19112

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COVER SHEET

MECHANICAL

226-438

NORTH

20"x20" SA (E) DN (TYP OF 2)

REMOVE ELECTRIC DUCT HEATER

22"x22" RA DN (E) (TYP OF 2)

60"x22" SA (X)

G H

R (E

4" HTBS/R (E) FROM CH-1

3" DSS (E)

1" DSS, CW, HW (E) TO SPRAY PUMP (TYP OF 3)

5" HTBS/R (E)

REMOVE GLYCOL HEATER

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2" DSR (E)

REMOVE GLYCOL HEATER

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1-1/2" GHS/R (X)

20"x28" SA DN (E)

(TYP. OF 2)

16"x36" RA DN (E)

(TYP. OF 2)

REMOVE BRINE CIRCULATING

PUMP (TYP. OF 3)

EXISTING DEFROST DRAIN

FROM ACU-12, 13 & 14

5" H

3" D

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S (E

SPRAY PUMP (X)

(TYP.)

2 3

REMOVE GLYCOL HEATER

AND ELECTRIC HEATER

2 3

ACU-12,13,14

EXISTING

CONTROL

PANEL

3" HTBS/R(X)

2" DSR (E)

3" S

A N

1-1/2"(X) 1-1/2"(X)

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MEP CONSULTANTS

20251 Century Blvd #120

Germantown MD 20874 p: 877-871-4229 F: 301-560-6336

INFO@cfrengineering.com

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DEMOLITION WORK GENERAL NOTES

MD-101

DEMOLITION PLAN

MECHANICAL

226-439

DEMOLITION WORK PLAN NOTES

1. REMOVE AIR CONDITIONING UNIT AND ALL ASSOCIATED COMPONENTS. HOUSE

KEEPING PAD SHALL BE EXISTING TO REMAIN. CONTRACTOR SHALL VERIFY-IN-FIELD

THE EXISTING CONDITIONS OF THE HOUSE KEEPING PAD, AND COORDINATE WITH THE

NIST COR IF REPLACEMENT OR MODIFICATIONS TO THE PAD ARE REQUIRED. REFER

TO NEW WORK PLANS FOR ADDITIONAL INFORMATION.

2. REMOVE ABANDONED-IN-PLACE GLYCOL HEATING COIL AND ALL ASSOCIATED

COMPONENTS. REFER TO NEW WORK PLAN FOR ADDITIONAL INFORMATION.

3. REMOVE EXISTING ELECTRIC HEATING COIL AND ALL ASSOCIATED COMPONENTS.

REFER TO NEW WORK PLANS FOR ADDITIONAL INFORMATION.

4. REMOVE EXISTING BRINE PUMP AND ALL ASSOCIATED COMPONENTS. HOUSE

KEEPING PAD SHALL BE EXISTING TO REMAIN. CONTRACTOR SHALL VERIFY-IN-FIELD

THE EXISTING CONDITIONS OF THE HOUSE KEEPING PAD, AND COORDINATE WITH THE

NIST COR IF REPLACEMENT OR MODIFICATIONS TO THE PAD ARE REQUIRED. REFER

TO NEW WORK PLANS FOR ADDITIONAL INFORMATION.

5. REMOVE DIFFERENTIAL PRESSURE CONTROL VALVE AND SENSOR. REFER TO NEW

WORK FOR ADDITIONAL INFORMATION.

6. REMOVE 1" DSS, CW AND HW PIPING CONNECTIONS AND ASSOCIATED VALVES. REFER

TO MECHANICAL NEW WORK PLANS FOR ADDITIONAL INFORMATION. CONTRACTOR

SHALL COORDINATE WITH NIST COR FOR UTILITY SERVICE OUTAGES.

7. REMOVE HIGH TEMPERATURE BRINE SUPPLY AND RETURN PIPING BACK TO MAIN.

REFER TO MECHANICAL NEW WORK PLANS FOR ADDITIONAL INFORMATION.

CONTRACTOR SHALL COORDINATE WITH NIST COR FOR UTILITY SERVICE OUTAGES

8. REMOVE GLYCOL HEATING WATER PIPING BACK TO MAIN. CONTRACTOR SHALL

COORDINATE WITH NIST COR FOR UTILITY SERVICE OUTAGES.

9. REMOVE DRAIN PIPING AND ASSOCIATED VALVES. REFER TO NEW WORK FOR

ADDITIONAL INFORMATION.

10. REMOVE ASSOCIATED SPACE DRY BULB AND DEW POINT TEMPERATURE SENSORS,

LOCATED ON THE FLOOR BELOW. REFER TO NEW WORK PLANS FOR ADDITIONAL

INFORMATION

1. EXISTING CONDITIONS SHOWN ON THIS DRAWING HAVE BEEN OBTAINED FROM

RECORD DRAWINGS WHEN AVAILABLE AND GENERAL FIELD SURVEY AND MAY NOT

INDICATE ACTUAL EXISTING CONDITIONS IN DETAIL AND DIMENSION. THE

CONTRACTOR SHALL VISIT THE SITE AND VERIFY EXACT EXISTING CONDITIONS PRIOR

TO THE FABRICATION OR ORDER OF EQUIPMENT OR PERFORMANCE OF ANY WORK.

THE CONTRACTOR SHALL NOTIFY THE NIST COR IN WRITING IF EXISTING CONDITIONS

ARE DISCOVERED THAT PREVENT THE EXECUTION OF WORK. THE CONTRACTOR

SHALL NOT PROCEED WITH WORK UNTIL DIRECTION IS PROVIDED

2. ALL EQUIPMENT REMOVED IS THE PROPERTY OF THE OWNER. IF THE OWNER DEEMS

THE EQUIPMENT "UNSALVAGEABLE", THE CONTRACTOR IS TO DISPOSE OF IT IN THE

PROPER MANNER.

3. EVERY EFFORT HAS BEEN MADE TO INDICATE ALL DEVICES THAT ARE BEING

REMOVED THROUGH EXISTING DRAWINGS AND FIELD OBSERVATIONS. HOWEVER,

THE CONTRACTOR SHALL VISIT THE SITE PRIOR TO BIDDING & VERIFY ALL REMOVALS,

AS SOME DIFFERENCES MAY EXIST.

4. REMOVE ALL MECHANICAL SYSTEMS SHOWN AS BEING DEMOLISHED, CURRENTLY

SERVING EXISTING AREA OF WORK, AND ALL ASSOCIATED COMPONENTS.

5. THE CONTRACTOR SHALL PROVIDE ALL MATERIALS, EQUIPMENT AND LABOR

REQUIRED TO COMPLETE DEMOLITION WORK.

6. CONTRACTOR SHALL PATCH AND SEAL ALL OPENINGS GENERATED BY DEMO WORK

TO MATCH EXISTING CONDITION.

7. CONTRACTOR SHALL VERIFY IN FIELD ALL CRITICAL DIMENSIONS FOR AIR HANDLING

UNITS, PUMPS AND REHEAT COILS. THE CONTRACTOR SHALL NOTIFY NIST AND A/E

PRIOR TO COMMENCING WORK IF THE EXISTING CONDITIONS PREVENT THE

EXECUTION OF THE INTENDED WORK.

8. PROVIDE PRE-DEMOLITION AIR BALANCE OF THE ENTIRE HVAC SYSTEM BASED ON

THE ORIGINAL DESIGN CONDITIONS.

1 BUILDING 226 - PARTIAL ATTIC DEMOLITION PLAN - MECHANICAL

SCALE: 1/4" = 1'

SCOPE OF WORK

1. REMOVE ALL ACUs, INDICATED AS DEMOLISHED, AND ALL ASSOCIATED COMPONENTS.

DISCONNECT SUPPLY AND RETURN DUCTWORK, AND SUPPLY AND RETURN PIPING,

AND RECONNECT TO NEW ACUs IN NEW WORK.

2. REMOVE BRINE PUMPS, INDICATED AS DEMOLISHED, AND ALL ASSOCIATED

COMPONENTS. DISCONNECT PIPING AND RECONNECT IN NEW WORK.

3. REMOVE ABANDONED GLYCOL HEATING COIL AND ALL ASSOCIATED COMPONENTS,

INDICATED AS DEMOLISHED. DISCONNECT SUPPLY DUCTWORK AND RECONNECT IN

NEW WORK.

4. REMOVE ELECTRIC HEATING COIL, INDICATED AS DEMOLISHED, AND ALL ASSOCIATED

COMPONENTS. DISCONNECT DUCTWORK AND REFER TO NEW WORK PLANS FOR

ADDITIONAL INFORMATION.

AutoCAD SHX Text

AutoCAD SHX Text D

AutoCAD SHX Text C

AutoCAD SHX Text F

P-14

P-13

P-12

ACU-13

ACU-14

ACU-12

EDH-13 2 3

EDH-14 2 3

20"x20" SA (E) DN (TYP OF 2)

22"x22" RA DN (E) (TYP OF 2)

60"x22" SA

2" HTBS/R

2" DSR (E)

3" D

S S

R (E

S (E

SPRAY PUMP

(TYP.)

ACU-12,13,14

EXISTING

CONTROL

PANEL

2-1/2" HTBS/R

2" DSR (E)

3" S

A N

EDH-12

M-101

3" HTBS/R

G H

R (E

G H

S (E

C W

H W

5" H

P-14A

P-13A

P-12A

4" HTBS/R (E) FROM CH-1

3" DSS (E)

1" DSS, CW, HW (E) TO SPRAY PUMP (TYP OF 3)

5" HTBS/R (E)

20"x28" SA DN (E)

(TYP. OF 2)

16"x36" RA DN (E)

(TYP. OF 2)

EXISTING DEFROST DRAIN

FROM ACU-12, 13 & 14

SUPPLY AIR DUCTWORK

ELECTRIC DUCT HEATER

3-WAY BRINE LOCAL LOOP MIXING

CONTROL VALVE

HTBS/R (E)

ACU-14

P-14

RETURN AIR DUCTWORK

SUMP DRAIN PIPINGDEFROST DRAIN

GHS/R(E)

ACU CONTROL PANEL SAN PIPING

MEP CONSULTANTS

20251 Century Blvd #120

Germantown MD 20874 p: 877-871-4229 F: 301-560-6336

INFO@cfrengineering.com

PROJECT #19112

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NEW WORK GENERAL NOTES

M-101

NEW WORK PLAN

MECHANICAL

226-440

1. EXISTING CONDITIONS SHOWN ON THIS DRAWING HAVE BEEN OBTAINED FROM

RECORD DRAWINGS WHEN AVAILABLE AND GENERAL FIELD SURVEY AND MAY NOT

INDICATE ACTUAL EXISTING CONDITIONS IN DETAIL AND DIMENSION. THE

CONTRACTOR IS STRONGLY ENCOURAGED TO VISIT THE SITE AND VERIFY EXACT

EXISTING CONDITIONS PRIOR TO THE FABRICATION OR ORDER OF EQUIPMENT OR

PERFORMANCE OF ANY WORK. THE CONTRACTOR SHALL NOTIFY THE NIST COR IN

WRITING IF EXISTING CONDITIONS ARE DISCOVERED THAT PREVENT THE EXECUTION

OF WORK. THE CONTRACTOR SHALL NOT PROCEED WITH WORK UNTIL DIRECTION IS

PROVIDED.

2. DUCTWORK AND PIPING SHALL NOT BE LOCATED ABOVE ELECTRICAL PANELS OR

EQUIPMENT.

3. PROVIDE ISOLATION VALVES FOR THE BRINE SYSTEM AS NECESSARY.

1 BUILDING 226 - PARTIAL ATTIC NEW WORK PLAN - MECHANICAL

SCALE: 1/4" = 1'

NEW WORK PLAN NOTES

1. PROVIDE AIR CONDITIONING UNIT AND ALL ASSOCIATED COMPONENTS AT LOCATION

INDICATED. CONTRACTOR SHALL COORDINATE ACCESS AND EQUIPMENT PATHWAY

INSTALLATION WITH AIR HANDLER MANUFACTURER. REFER TO MECHANICAL DETAILS,

SCHEDULES AND SPECIFICATIONS FOR ADDITIONAL INFORMATION.

2. PROVIDE DUCTWORK IN PLACE OF DEMOLISHED GLYCOL HEATING COIL, AT LOCATION

INDICATED, AS NEEDED. CONTRACTOR SHALL FIELD VERIFY THE EXTENT OF

DUCTWORK REQUIRED. DUCTWORK SHALL MATCH EXISTING IN CONSTRUCTION

MATERIAL, SEAL CLASS AND INSULATION. CONTRACTOR SHALL CONFIRM DUCTWORK

AND ACCESSORIES ARE COMPATIBLE WITH AIRSTREAM TEMPERATURES BETWEEN

-10F AND 150F.

3. PROVIDE ELECTRIC HEATING COIL AND ALL ASSOCIATED COMPONENTS, AT LOCATION

INDICATED. REFER TO MECHANICAL DETAILS AND SCHEDULES FOR ADDITIONAL

INFORMATION, INCLUDING CLEARANCE REQUIREMENTS.

4. PROVIDE BRINE PUMP AND ALL ASSOCIATED COMPONENTS, AT LOCATION INDICATED.

REFER TO MECHANICAL DETAILS AND SCHEDULES FOR ADDITIONAL INFORMATION.

5. PROVIDE 1" DSS, CW AND HW PIPING CONNECTIONS AND ASSOCIATED VALVES AND

CONNECT TO EXISTING AT LOCATION INDICATED. PIPING SHALL MATCH EXISTING IN

CONSTRUCTION MATERIAL, FITTINGS AND INSULATION. REFER TO MECHANICAL

DETAILS FOR ADDITIONAL INFORMATION.

6. PROVIDE HIGH TEMPERATURE BRINE SUPPLY AND RETURN PIPING AND CONNECT TO

EXISTING AT LOCATION INDICATED WITH ISOLATION VALVES AT MAIN TAPS. REFER TO

MECHANICAL DETAILS FOR ADDITIONAL INFORMATION

7. PROVIDE 2" SANITARY AND DEFROST DRAIN PIPING AND ASSOCIATED VALVES AND

CONNECT TO EXISTING AT LOCATION INDICATED. PIPING SHALL MATCH EXISTING IN

CONSTRUCTION MATERIAL, FITTINGS AND INSULATION. REFER TO MECHANICAL

DETAILS FOR ADDITIONAL INFORMATION.

8. PROVIDE DIFFERENTIAL PRESSURE CONTROL VALVE AND SENSOR AT LOCATION

INDICATED.

9. PROVIDE SPACE DRY BULB AND DEW POINT TEMPERATURE SENSORS IN THE

ASSOCIATED ROOMS, LOCATED ON THE FLOOR BELOW, IN THE SAME LOCATION AS

THE DEMOLISHED SENSORS. REFER TO MECHANICAL CONTROLS DRAWINGS FOR

ADDITIONAL INFORMATION.

SCOPE OF WORK

1. PROVIDE ALL ACUs, INDICATED AS NEW WORK, AND ALL ASSOCIATED COMPONENTS.

RECONNECT SUPPLY AND RETURN DUCTWORK, AND SUPPLY AND RETURN PIPING, TO

ACUs. AIR CONDITIONING UNITS SHALL BE ASSEMBLED IN PLACE.

2. PROVIDE BRINE PUMPS, INDICATED AS NEW WORK, AND ALL ASSOCIATED

COMPONENTS. RECONNECT EXISTING PIPING TO ACU.

3. PROVIDE DUCTWORK IN PLACE OF DEMOLISHED GLYCOL HEATING COIL

4. PROVIDE ELECTRIC HEATING COIL, INDICATED AS NEW WORK, AND ALL ASSOCIATED

COMPONENTS. RECONNECT DUCTWORK.

2 BUILDING 226 - PARTIAL ATTIC ELEVATION - ACU-14

SCALE: 1/4" = 1'

AutoCAD SHX Text

AutoCAD SHX Text D

AutoCAD SHX Text C

AutoCAD SHX Text F

AIR FLOW

SEAL AIR TIGHT

REHEAT COIL

M A

DUCT

1 COIL DUCT CONNECTION DETAIL

NTS

ACCESS DOOR ON SIDE OR

BOTTOM FOR BEST ACCESS

M A

SIZES OF MAINS

REFER TO PLAN FOR ROUTING AND

PIPE HANGER W/VIBRATION

ISOLATOR

ANCHOR BOLT

BAS SENSOR WELL

CHECK VALVE

EXISTING CONCRETE

COUPLING GUARD

BALL VALVE

PIPE INSTALLATION AND

PUMP INERTIA BASE

FINISH FLOOR

SYSTEM IS FILLED

PRESSURE GAUGE W/

GROUT PUMP BASE AFTER

PAD

SIZES OF MAINS

PUMP BASE LENGTH AND WIDTH

REFER TO PLAN FOR

AS REQUIRED TO SUPPORT

PUMP AND SUCTION ELBOW

BAS SENSOR WELL

STAINLESS STEEL BRAIDED

FLEXIBLE CONNECTOR (TYP)

BUTTERFLY VALVE

BLOWDOWN VALVE

STRAINER WITH

HOSE END DRAIN VALVE

BAS SENSOR WELL

3 AIR CONDITIONING UNIT PIPING DETAIL

NTS

DUCT WIDTH

DUCT

HEIGHT

CONTROL PANEL LENGTH

CLEARANCE

DUCT

THICKNESS

CONTROL PANEL

OVERHANG

HEATING

COIL DEPTH

NOTES:

1. FOR SLIP-INSTALLATION, CUT HOLE IN DUCTWORK 1/8" LARGER THAN HEATER FRAME (HEATING COIL DEPTH x HEIGHT).

2. SUSPEND OR ATTACH DUCT PER MANUFACTURER RECOMMENDATIONS.

3. PROVIDE CLEARANCE FROM ALL ARCHITECTURAL, MECHANICAL, PLUMBING, FIRE PROTECTION, AND ALL OTHER ELEMENTS EQUAL

TO THE CONTROLS OVERHANG HEIGHT AND LENGTH.

4. INSTALL HEATER AT LEAST 4 FEET DOWNSTREAM AND 4 FEET UPSTREAM FROM FAN OUTLET, ABRUPT TRANSITION, OR OTHER

OBSTRUCTION.

5. ELBOWS OR TURNS MUST BE LOCATED AT LEAST 4' FROM THE INLET OF THE HEATER AND 2' FROM THE OUTLET OF THE HEATER.

6. PROVIDE WITH ELECTRICAL DISCONNECT SWITCH.

CONTROL PANEL

WIDTH

CONTROL

PANEL HEIGHT

2 CENTRIFUGAL END SUCTION PUMP DETAIL (P-12, 13, 14)

NTS

SUCTION DIFFUSER

OPD MOTOR

BELT GUARD

FAN MOTOR

PRESSURE GAGE

3/8" LINE WITH REGULATING STOP COCK

DENSITY COLUMN, SEE DETAIL

RUBBER HOSE AND CLAMP CONNECTION

1/2 HP PUMP MOTOR, 3450 RPM, 460 V, 3 PH

2" DRAIN

THREE (3) 1" CONNECTIONS FOR

NO-FROST FEED, HOT WATER FEED

AND WATER MAKE UP FILL

4" FLANGE FOR LIQUID LEVEL

CONTROLLER

2" DRAIN WITH SWIRL BREAKER

12" X 8" ACCESS DOOR

3" HTBS INLET

3" HTBR OUTLET 8 ROW FINNED COOLING COIL

DAMPER SHAFT

FAN SHAFT

111-5/16" 13-1/2"

86-5/8"

SUPPLY DAMPER

RETURN DAMPER

VIBRATION ISOLATORS

PRIMARY MIST ELIMINATOR

AUXILARY MIST ELIMINATOR

DISCHARGE

INTAKE

DAMPER (TYP.)

ACCESS DOOR

2" OVERFLOW

FOR NO-FROST

2" OVERFLOW FOR WATER

ACCESS DOOR FOR

ELIMINATORS AND FILTER

49-1/2"

43-3/16"

-1

80-5/16"13-1/2"

55-5/8"

BELT GUARD

FAN MOTOR

PRESSURE GAGE

3/8" LINE WITH REGULATING STOP COCK

DENSITY COLUMN, SEE DETAIL

RUBBER HOSE AND CLAMP CONNECTION

1/2 HP PUMP MOTOR, 3450 RPM, 460 V, 3 PH

2" DRAIN

THREE (3) 1" CONNECTIONS FOR

NO-FROST FEED, HOT WATER FEED

AND WATER MAKE UP FILL

4" FLANGE FOR LIQUID LEVEL

CONTROLLER

2" DRAIN WITH SWIRL BREAKER

12" X 8" ACCESS DOOR

2" HTBS INLET

2" HTBR OUTLET8 ROW FINNED COOLING COIL

FAN SHAFT

SUPPLY DAMPER

RETURN DAMPER PRIMARY MIST ELIMINATOR

AUXILARY MIST ELIMINATOR

DISCHARGE

INTAKE

DAMPER (TYP.)

ACCESS DOOR

2" OVERFLOW

FOR NO-FROST

2" OVERFLOW FOR WATER

ACCESS DOOR FOR

ELIMINATORS AND FILTER

49-1/2"

43-3/16"

-1

80-5/16" 13-1/2"

55-5/8"

BELT GUARD

FAN MOTOR

PRESSURE GAGE

3/8" LINE WITH REGULATING STOP COCK

DENSITY COLUMN, SEE DETAIL

RUBBER HOSE AND CLAMP CONNECTION

1/2 HP PUMP MOTOR, 3450 RPM, 460 V, 3 PH

2" DRAIN

THREE (3) 1" CONNECTIONS FOR

NO-FROST FEED, HOT WATER FEED

AND WATER MAKE UP FILL

4" FLANGE FOR LIQUID LEVEL

CONTROLLER

2" DRAIN WITH SWIRL BREAKER

12" X 8" ACCESS DOOR

3" HTBS INLET

3" HTBR OUTLET 12 ROW FINNED COOLING COIL

FAN SHAFT

SUPPLY DAMPER

RETURN DAMPER

DISCHARGE

INTAKE

DAMPER (TYP.)

ACCESS DOOR

2" OVERFLOW

FOR NO-FROST

2" OVERFLOW FOR WATER

49-1/2"

43-3/16"

-1

5 LOW TEMP ACU DETAIL (ACU-12)

NTS

6 LOW TEMP ACU DETAIL (ACU-13)

NTS

7 LOW TEMP ACU DETAIL (ACU-14)

NTS

HOUSE KEEPING PAD

EXISTING HOUSE KEEPING PAD

FAN

EXISTING HOUSE KEEPING PAD

HOUSE

KEEPING PAD

VIBRATION ISOLATORS

FAN

VIBRATION ISOLATORS

PRIMARY MIST ELIMINATOR

AUXILARY MIST ELIMINATOR

ACCESS DOOR FOR

ELIMINATORS AND FILTER

FAN

HOUSE KEEPING PAD

EXISTING HOUSE KEEPING PAD

4 ELECTRIC DUCT HEATER DETAIL

NTS

3/4" MANUAL

AIR VENT

3-WAY CONTROL VALVE

STRAINER WITH BLOW OFF

GATE VALVE

HTBS

HTBR

TEE (TYP)

AIR CONDITIONING UNIT

BRINE PUMP; REFER

TO PUMP DETAIL FOR

PIPING SPECIALTIES

AND VALVES

AIR VENT (TYP)

2" WATER TO EXISTING DRAIN

2" DSR TO EXISTING TANK

SPRAY PUMP AND TANK

ASSEMBLY NO-FROST

DSS

2" DRAIN

VIBRATION ISOLATOR (TYP)

SUMP/BASIN

COOLING COIL

PIPING SHOWN FOR REFERENCE ONLY.

WASHABLE FILTER

SUMP

SPRAY COIL

SPRAY

PUMP

STAINLESS STEEL FLEX

CONNECTION (TYP.)

SPRAY COIL

PRESSURE GAGE (TYP)

PRESSURE REDUCING

VALVE (TYP)

NO-FROST DISCHARGE

PIPING

BALANCE VALVE

1. IF SUCTION DIFFUSER IS PROVIDE WITH AN INTEGRAL STRAINER, THAN THE SEPARATE WYE

STRAINER IS NOT NECESSARY.

8 DENSITY COLUMN DETAIL

NTS

AIR HANDLING UNIT

DENSITY COLUMN

REMOVABLE PLUG FOR INSPECTION OF DENSITY COLUMN

UNION (TYP)

THROTTLING VALVE

SHUTOFF VALVE

TO SUMP PUMP DISCHARGE

DRAIN VALVE

PRESSURE TRANSDUCER

3"Ø

U M

MEP CONSULTANTS

20251 Century Blvd #120

Germantown MD 20874 p: 877-871-4229 F: 301-560-6336

INFO@cfrengineering.com

PROJECT #19112

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MECHANICAL AND ELECTRICAL ENGINEERING CONSULTANT:

-0

M M

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A N

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M-501

DETAILS

MECHANICAL

226-441

3 PRESSURE GAGE DETAIL

NTS

2 VERTICAL TURBINE SUMP PUMP DETAIL

NTS

MOTOR

BASIN SUMP

IMPELLER

NOTE 2 & 3

PUMP

DISCHARGE

PUMP SHAFT

NOTE 1

NOTES:

(1) PUMP SHAFT SHALL BE SIZED TO FIT SUMP DEPTH

(2) PROVIDE PROTECTION AGAINST DEBRIS DAMAGING PUMP

(3) PROVIDE OFFSET BETWEEN PUMP IMPELLER AND BASIN FLOOR AS RECOMMENDED BY PUMP

MANUFACTURER.

(4) CONTINUATION OF ACU SUMP BASIN

NOTE 4

3/4" BALL VALVE

PRESSURE SNUBBER

REDUCING BUSHING

PRESSURE GAUGE

NOTE: FOR PIPES 2" AND SMALLER, USE FITTING INSTEAD OF THREADOLET OR WELDOLET.

THREADOLET

WATER PIPE

6" MIN.

WATER PIPING

CONCRETE INSERT

THREADED ROD

UNISTRUT CHANNEL

PIPING

NOTES:

1. MAXIMUM DISTANCE BETWEEN SUPPORTS IS 8'-0", OR AS REQUIRED TO PREVENT SAGGING.

2. THREADED ROD SIZE AS REQUIRED TO SUPPORT PIPING WITH A 3.0 SAFETY FACTOR.

3. CONCRETE ANCHORS SHALL BE HILTI DROP-IN ANCHOR WITH MINIMUM CONCRETE EMBEDMENT AS PER

MANUFACTURERS SPECS OR APPROVED EQUAL.

4. PROVIDE FOR COLD AND HOT WATER PLUMBING PIPING SUPPORTS.

STRAP PIPE

TO UNISTRUT

2. COORDINATE SUPPORT WITH ELECTRICAL DRAWINGS.

1. MAXIMUM DISTANCE BETWEEN SUPPORTS IS 8'-0", OR AS REQUIRED TO PREVENT SAGGING.

3. THREADED ROD SIZE AS REQUIRED TO SUPPORT PIPING WITH A 3.0 SAFETY FACTOR.

NOTES:

STRUCTURAL JOIST

1/2" THREADED

ROD (TYP).

1-1/4 X 1-1/4 X 3/16

ANGLE IRON SUPPORTS.

1/2" BOLT AND NUT

W/ 2" 1/2 WASHER.

NUTS AND WASHERS BOTH

SIDES OF ANGLE (TYP).

1 PIPE SUPPORT DETAIL

NTS

4 ELECTRIC DUCT HEATER SUPPORT DETAIL

NTS

4. PROVIDE DUCT SUPPORTS AS NEEDED TO INDEPENDENTLY SUPPORT THE ELECTRIC DUCT HEATER

1. MAXIMUM DISTANCE BETWEEN SUPPORTS IS 6 FT, OR AS REQUIRED TO PREVENT SAGGING

2. COORDINATE PIPE SUPPORT WITH OTHER TRADES AND EXISTING CONDITIONS.

3. THREADED ROD SIZE AS REQUIRED TO SUPPORT PIPING WITH A 3.0 SAFETY FACTOR.

EXPANSION RAIL, MATERIAL

ROLLER CENTERLINE, IN

EACH DIRECTIONNOTES:

EXTEND 6 IN. BEYOND

SAME AS PIPE (TYP),

CONTINUOUS VAPOR

BARRIER (TYP.)

SHIELD (TYP)

20 GAUGE SHEET METAL

HANGER ROD

END VIEW ELEVATION VIEW

6 IN.

INSULATION

5 ROLLER TYPE PIPE SUPPORT DETAIL

NTS

4. PROVIDE ROLLER SUPPORT FOR ALL BRINE PIPING

UNION

NO FROST LV-2 OR WATER

1/2" THREADED

ROD (TYP).

1-1/4 X 1-1/4 X 3/16

ANGLE IRON SUPPORTS.

1-1/4 X 1-1/4 X 3/16

ANGLE IRON SUPPORTS.

VERTICAL MOUNT HORIZONTAL MOUNT

MEP CONSULTANTS

20251 Century Blvd #120

Germantown MD 20874 p: 877-871-4229 F: 301-560-6336

INFO@cfrengineering.com

PROJECT #19112

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MECHANICAL AND ELECTRICAL ENGINEERING CONSULTANT:

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M M

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M-502

DETAILS

MECHANICAL

226-442

BRINE PUMP SCHEDULE

TAG

GPM RPM

50 1150

TDH

(FT)

IMPELLER

(IN)

ACTUAL

DIA.

7.63

PERFORMANCE

BHP

0.70

MOTOR

1.0

VOLT

PHASE

NOTES

ALL

SERVICE

ACU-12

BUILDING 226

BASIS OF DESIGN

FLOWSERVE

AH3X1.5-82 M3GD

WEIGHT

(LBS)

425P-12

P-13 ACU-13

BUILDING 226

35 25 7.880.62 3 60

P-14 ACU-14

BUILDING 226

75 35 60

INDOOR LOW TEMPERATURE AIR CONDITIONING UNIT SCHEDULE

TAG TOTAL

(MBH)

SENSIBLE

(MBH)

LOCATION NOTES

NOTES:

1. PROVIDE WITH THE FOLLOWING

a. 2 INCH SOLID DOUBLE WALL CONSTRUCTION WITH FOAM INJECTED PANEL WITH R-30 PANEL INSULATION

b. NO THROUGH METAL CONSTRUCTION

c. MERV 8 WASHABLE FILTERS WITH STAINLESS STEEL FRAMES

d. TWIN (2) BELT DRIVEN BACKWARDS INCLINED CLASS II FANS WITH AJUSTABLE SHEAVES, COMBINATION MOTOR STARTER AND DISCONNECT, AND NEMA PREMIUM TEFC MOTOR.

e. STAINLESS STEEL CASING, COIL AND HOUSING CONSTRUCTION

f. FAN AND FILTER STATUS SWITCHES, DISCHARGE, MIXED, AND RETURN AIR SENSORS AND DAMPER ACTUATOR.

g. SPRAY SUMP PUMP. REFER TO SCHEDULE BELOW AND SPECIFICATIONS.

h. MIST ELIMINATORS

i. VIBRATION ISOLATORS

j. BRINE COOLING COIL PERFORMANCE DATA IS BASED ON WORKING FLUID OF DYNALENE HFLO (REFER TO SPECIFICATIONS FOR ADDITIONAL INFORMATION FOR DYNALENE HFLO

WORKING FLUID.)

MOTOR

(HP)

BRINE COOLING COILINDOOR FAN

VOLTS / PHASE /FREQ

ACU-12 30

BUILDING 226

ATTIC

ALL5 460 / 3 / 60

AIR FLOW

(CFM)

5,500

ELECTRIC DUCT HEATER SCHEDULE

MARK SERVICE LOCATION

AIRFLOW

(CFM)

SIZE

(INCH) VOLT / PH / HZ BASIS OF DESIGN NOTES

EDH-12 ACU-12

BUILDING 226

ATTIC

460 / 3 / 60

INDEECO

166X

ALL

EDH-13

EDH-14

460 / 3 / 60

5,500 60"x22"

4,750 34"x40"

NOTES:

1. PROVIDE WITH FIN TUBULAR COIL DUCT HEATER.

2. PROVIDE WITH UNIT MOUNTED DISCONNECT.

3. PROVIDE WITH SCR CONTROL, STAGED CIRCUITS AND CONTROL PANEL

4. RATED POWER INCLUDES 20% SAFETY FACTOR.

NOTES:

1. PROVIDE WITH THERMAL OVERLOAD PROTECTION

2. PROVIDE WITH VIBRATION ISOLATION AND INERTIA BASE

3. PROVIDE WITH STAINLESS STEEL CONSTRUCTION.

4. PROVIDE AS BASE MOUNTED END SUCTION MAGNETIC DRIVE AND SEAL-LESS CONSTRUCTION, COMPLIANT WITH ANSI B73.1 AND B73.3 AND HI 5.1-5.6

WORKING FLUID

VISCOSITY

5.2

DENSITY

(LB/CF)

49.8

TEMP.

(°F)

- 15

5.2 49.8

LBT

(°F)

-11.8

BASIS OF DESIGN

ELLIS & WATTS

ESP

(IN.W.G.)

1.0

EBT

(°F)

-15

EAT DB

(°F)

LAT DB

(°F)

-4.2 2.4

FLOW

RATE

(GPM)

WPD

(FT)

APD

(IN W.C.)

0.2

ROWS

WORKING FLUID (BRINE)

VISCOSITY

5.2

DENSITY

(LB/CF)

49.8

TEMP.

(°F)

- 15

RPM

ELECTRICAL

ACU-13 22

BUILDING 226

ATTIC

3 460 / 3 / 604,750 1.0 -15 35 0.29 8 5.2 49.8 - 15 1750

ACU-14 BUILDING 226

ATTIC

3 460 / 3 / 604,750 1.0 -15 75 0.38 12 5.2 49.8 - 15 1750

- 15

ACU-13

ACU-14

BUILDING 226

ATTIC

BUILDING 226

ATTIC

APD

(IN. WG.)

0.10

0.075

4,750

EAT

(°F)

-4.2

-3.7

-6.0

LAT

(°F)

150 0.075 34"x40"

0 -3.7

0 -6.0

-11.5

35-12.4

ELLIS & WATTS

MOTOR

(BHP)

2.5

RPM

1,652

2.2

1,553

ALL

INDEECO

166X

INDEECO

166X

ALL

SYSTEM NOTES

SMACNA DUCT PRESSURE CLASS

IN.W.G.

GENERAL NOTES

A. ALL DUCT CONSTRUCTION SHALL BE CONSTRUCTED AS SEAL CLASS A.

B. DUCTWORK LEAKAGE TESTS PRESSURE SHALL BE EQUAL TO THE SMACNA DUCT PRESSURE CLASS.

C. ALL DUCTWORK SHALL BE LEAK TESTED UNLESS OTHERWISE NOTED. LEAKAGE RATES SHALL NOT EXCEED THE LEAKAGE FACTORS FOR THE LEAKAGE CLASS AT THE ASSOCIATED TEST PRESSURE.

SMACNA LEAKAGE

CLASS -

RECTANGULAR

DUCTWORK

SMACNA LEAKAGE

CLASS - ROUND

DUCTWORK

ACU DUCT SYSTEM 6 3

DUCT CONSTRUCTION SCHEDULE

N/A

EXHAUST

2.0

SUPPLY

2.0

RETURN

FPI

1.3

3.8

1150 1.0 400

FLOWSERVE

AG1.5X1-82 M3GD

6.01.311750 2.0 400

FLOWSERVE

AG3X1.5-62 M3GD

FLA

1.8

2.9

DEFROST SUMP PUMP SCHEDULE

TAG

GPM RPM

25 1150

TDH

(FT)

IMPELLER DIAMETER

(IN)

RATED

7.88

PERFORMANCE

BHP

0.62

MOTOR

1.0

VOLT

PHASE

NOTES

ALL

SERVICE

ACU-12

BUILDING 226

BASIS OF DESIGN

FLOWSERVE

1E1.5X1SP-82RV

WEIGHT

(LBS)

500P-12A

NOTES:

1. PROVIDE WITH STAINLESS STEEL CONSTRUCTION

2. PROVIDE AS VERTICAL SUBMERSIBLE TURBINE PUMP.

3. PROVIDE WITH THERMAL OVERLOAD PROTECTION

4. PROVIDE WITH EC MOTOR CONTROLLER, FOR SPEED ADJUSTMENTS DURING BALANCING.

5. PROVIDE WITH WORKING FLUID AS LV2 NO-FROST SOLUTION (REFER TO SPECIFICATIONS FOR ADDITIONAL INFORMATION)

WORKING FLUID

ALL

ALLREFER TO AHU SPECIFICATION25 115025 460 3 60

ACU-13

BUILDING 226

FLOWSERVE

1E1.5X1SP-82RV

P-13A

25 115025 460 3 60

ACU-14

BUILDING 226

FLOWSERVE

1E1.5X1SP-82RV

P-14A

MINIMUM

5.0

7.880.62 1.0 5005.0

TSP

(IN.W.G.)

2.0

2. PROVIDE THE FAN ASSEMBLY WITH THE FOLLOWING MAXIMUM ACOUSTIC LEVELS:

SOUND POWER BY OCTAVE BAND (Lw)

INLET

OUTLET

63 HZ 125 HZ 250 HZ 500 HZ 1000 HZ 2000 HZ 4000 HZ 8000 HZ

ALL

BASIS

DESIGN

TWIN CITY

150/BAE-DW

ACU-12

INLET

OUTLET

ACU-13

INLET

OUTLET

ACU-14

TWIN CITY

150/BAE-DW

TWIN CITY

150/BAE-DW

WEIGHT

(LB)

POWER

(kW)

300 250

BASIS

DESIGN

SUPER RADIATOR

COIL

SUPER RADIATOR

COIL

SUPER RADIATOR

COIL

WEIGHT

(LB)

3,000

2,600

2,900

STAGES

MEP CONSULTANTS

20251 Century Blvd #120

Germantown MD 20874 p: 877-871-4229 F: 301-560-6336

INFO@cfrengineering.com

PROJECT #19112

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2 3 4 5 6

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MECHANICAL AND ELECTRICAL ENGINEERING CONSULTANT:

-0

M M

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M-601

SCHEDULES

MECHANICAL

226-443

DDC INPUT/OUPUT POINT SCHEDULE

NOTES

ANALOG BINARY ANALOG BINARY

GENERAL NOTES

1. ALL SETPOINTS ARE ADJUSTABLE.

2. SOFTWARE SHUTDOWN THROUGH THE DDC SYSTEM IS ACCEPTABLE WHERE EMERGENCY SHUT DOWN IS INDICATED UNLESS OTHERWISE NOTED.

3. ALARM SIGNALS SHALL NOTIFY UP TO 3 PEOPLE VIA E-MAIL AS DIRECTED BY NIST.

INPUT TO DDC OUTPUT FROM DDC

O W

O N

/ O

N / C

FAILURE PROGRAMS

/ L

- CO

R G

DDC FEATURES

GENERAL

-O

D / U

SPECIFIC NOTES

1. FAILURE SHALL BE DETERMINED BY CURRENT SENSING RELAY.

(p pm

AIR CONDITIONING UNIT X

RETURN AIR DAMPER X

RETURN AIR TEMPERATURE SENSOR X X

DISCHARGE AIR TEMP. SENSOR X X

FILTER PRESSURE SENSOR X XX

LOCAL LOOP MIXING CONTROL VALVE X

ELECTRIC HEATING COIL X

1X X XSUPPLY FAN

MIXED (BYPASS) AIR DAMPER XX

SUPPLY AIR DAMPER XX

BRINE COIL PUMP X XX

DISCHARGE AIR DEW POINT SENSOR X X

SPACE DEW POINT SENSOR X X

A N

DEFROST SOLUTION SUMP

BRINE COIL

D E

S T

S U

P P

E N

T V

S U

M P

W A

D R

V A

S P

R A

Y P

U M

P S

S P

R A

Y P

U M

P S

T/ S

S P

E C

G R

A V

C O

N C

E N

S E

N S

O R

BO BO BO

D R

T O

N O

F R

O S

T S

U M

BOBO

FROM EXISTING HOT WATER SYSTEM

FROM EXISTING COLD WATER SYSTEM

FROM EXISTING DSS SYSTEM

C O

R V

E N

T V

H O

T W

R V

E N

T V

S U

M P

H O

T W

R F

V A

S U

M P

C O

R F

V A

AOAO

D E

S T

S U

P P

V A

S U

M P

E M

P E

R A

S U

M P

L E

V E

1 DEFROST SYSTEM (ACU-12, 13, 14)

NTS

BRINE COIL LEAVING AIR SENSOR X X

X 1

DEFROST SYSTEM

SPECIFIC GRAVITY PRESSURE

BRINE SPRAY PUMP

DEFROST OVERFLOW VALVE

WATER DRAIN VALVE

DEFROST DRAIN VALVE

X X

X X X 1

HOT WATER FILL VALVE

COLD WATER FILL VALVE X

DEFROST SUPPLY FILL VALVE

XHOT WATER VENT VALVE

COLD WATER VENT VALVE

DEFROST SUPPLY VENT VALVE

SUMP LIQUID LEVEL X

SUMP TEMPERATURE SENSOR X X

DDC PANEL

X XDISCHARGE STATIC PRESSURE

SPACE TEMPERATURE SENSOR X X

7 SEQUENCE OF OPERATIONS - ACU TEMPERATURE AND VOLUME CONTROL

NTS

3 SEQUENCE OF OPERATIONS - ACU TEMPERATURE AND VOLUME CONTROL (CONT.)

NTS

S U

M P

D E

S T

S O

O N

O V

E R

W V

S U

M P

D E

S T

S O

O N

D R

V A

DDC PANELAI

R E

N A

E W

P O

R E

N A

E M

P E

R A

S U

P P

R Y

B U

E A

C O

M M

A N

S U

P P

A M

P E

R C

O M

M A

N D

R E

N D

A M

P E

R C

O M

M A

N D

D A

M P

E R

C O

M M

A N

S U

P P

A N

R T/

U P

F A

N S

B R

C O

E A

G A

E M

P E

R A

E R

E N

L P

R E

S S

U R

P U

M P

R T/

BOBI

P U

M P

2 LOW TEMP ACU AND BRINE PUMP CONTROL DETAIL (ACU-12, 13, 14)

NTS

S P

A C

E D

R Y

B U

C H

A R

G E

P R

E S

S U

R E

B R

C O

O C

A L

P M

G C

O N

L V

FILTERSDP

HTBS

HTBR

SUPPLY AIR

RETURN AIR

Tdp

(R E

T O

D E

O R

A D

A L

REFER TO DEFROST

CONTROL DETAIL 1

THIS ENVIRONMENTAL CHAMBER IS TO MAINTAIN FINE CONTROL OF DRY-BULB (DB) AND DEW-POINT (DP) TEMPERATURES FOR ROOM DRY-BULBS RANGING FROM 0°F TO 150°F UTILIZING A SPRAYED COIL AIR HANDLING UNIT.

THE CONTROLS FOR THE CHAMBER SHALL BE A MODERN, BACNET COMPLIANT, DIGITAL CONTROL SYSTEM ACCESSIBLE FROM A NIST NETWORK. ALL MODES OF OPERATION REQUIRE ON/OFF CONTROL OF THE CHAMBER CHILLER AND MAIN BRINE LOOP PUMP, AND SETTING/VERIFYING OF THE CHAMBER CHILLER SYSTEM'S MAIN BRINE…

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