SOW Attachment (1) Contract Drawings.pdf

NAVAL SURFACE WARFARE CENTER

PHILADELPHIA DIVISION

PHILADELPHIA NAVY YARD ANNEX

PHILADELPHIA, PENNSYLVANIA

BUILDING 4

AHU-3 Cooling Coil Replacement

VICINITY PLAN LOCATION PLAN

G-001

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SECURITY BADGING OFFICE

CONTRACT ADMINISTRATION AND

OVERSIGHT OFFICES

PROJECT SITE

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REVISION TABLE

SYM DESCRIPTION DATE APPR

PREFINAL DRAWING 10/24/22

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MECHANICAL ABBREVIATIONS GENERAL MECHANICAL NOTES

1. GENERAL NOTES ARE DISCIPLINE SPECIFIC, AND APPLY TO EVERY DRAWING IN THAT DISCIPLINE. GENERAL SHEET NOTES APPLY TO WORK

SHOWN ON A DRAWING. SHEET KEY NOTES NOTES APPLY TO INDIVIDUAL SITUATIONS AND EQUIPMENT.

2. WORK MUST BE PERFORMED IN ACCORDANCE WITH FEDERAL, STATE AND LOCAL CODES AND STANDARDS ENFORCED BY THE LOCAL

REGULATING AUTHORITIES.

3. COMPLETELY EXAMINE THE SITE AND OBSERVE THE CONDITIONS UNDER WHICH THE WORK WILL BE INSTALLED. NO ALLOWANCES WILL BE MADE FOR ERRORS OR OMISSIONS RESULTING FROM THE CONTRACTOR'S FAILURE TO COMPLETELY EXAMINE THE SITE.

4. INSTALL NEW WORK SUCH THAT CLEARANCES ARE PROVIDED AS REQUIRED BY THE MANUFACTURER TO ALLOW FULL ACCESSIBILITY FOR

OPERATION AND ROUTINE MAINTENANCE OF COMPONENTS.

5. CONTRACTOR SHALL COMPLETELY RESEAL ALL NEW OR MODIFIED OPENINGS AND PENETRATIONS IN THE AIR HANDLING UNIT ENCLOSURE AT THE

COMPLETION OF WORK IN ACCORDANCE WITH ASHRAE STANDARDS.

6. COMPLY WITH SMACNA "HVAC DUCT CONSTRUCTION AND STANDARDS" AND OTHER APPLICABLE STANDARDS INCLUDED IN THE SPECIFICATIONS

FOR THE CONSTRUCTION AND SUPPORT OF DUCT ACCESS DOORS, UNLESS OTHERWISE NOTED.

7. MAKE PROPER CONNECTION TO FIXTURES AND EQUIPMENT. DRAWINGS ARE SCHEMATIC AND BRANCH MAINS, ELBOWS,AND CONNECTIONS ARE

NOT ALL SHOWN.

8. COORDINATE INSTALLATION OF PIPING AND EQUIPMENT WITH MECHANICAL AND ELECTRICAL DISCIPLINES, AS WELL AS OTHER PLUMBING WORK.

9. DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED.

10. DETAILS WITHOUT SPECIFIC REFERENCES TO A LOCATION MUST BE APPLIED TO THE GENERAL INSTALLATION OF MECHANICAL WORK.

11. INSTALL ALL MATERIAL AND EQUIPMENT IN ACCORDANCE WITH THE MANUFACTURER'S WRITTEN INSTRUCTIONS. PROVIDE ALL MATERIAL NOT FURNISHED BY THE MANUFACTURER BUT NECESSARY FOR A COMPLETE INSTALLATION AT NO ADDITIONAL COST TO THE GOVERNMENT.

12. ALL WORK SHALL CONFORM THE SAFETY REQUIREMENTS DEFINED IN THE UNITED STATES ARMY CORP OF ENGINEERS EM 385-1-1 HEALTH AND

SAFETY REQUIREMENTS MANUAL.

13. NO WORK MAY BEGIN ON A SYSTEM UNTIL ALL PRE-WORK SUBMITTALS ARE APPROVED AND MATERIAL IS ONSITE..

14. CONTRACTOR SHALL SEQUENCE WORK SUCH THAT DOWNTIME ON THE AHU IS MINIMIZED.

15. AHU IS WINTERIZED BETWEEN 15 OCTOBER AND 15 APRIL OF EACH CALENDAR YEAR. FINAL ACCEPTANCE OF CHILLED WATER COILS CANNOT

OCCUR DURING THIS PERIOD.

16. PROVIDE NEW INSULATION ON ALL NEW PIPING, VALVES, AND FITTINGS OR WHERE INSULATION IS REMOVED TO SUPPORT ADJACENT WORK.

17. CONTRACTOR SHALL SCHEDULE AND SEQUENCE WORK SUCH THAT THE DURATION THE UNIT IS INOPERABLE IS MINIMIZED TO THE MAXIMUM

EXTENT PRACTICAL.

MECHANICAL SYMBOLS

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REVISION TABLE

SYM DESCRIPTION DATE APPR

PREFINAL DRAWING 10/24/22

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UNION

3-WAY CONTROL VALVE

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THERMOMETER

THERMAL WELL

PRESSURE GAUGE

WITH SHUT-OFF COCK

AIR VENT WITH PLUG

DRAIN VALVE WITH

HOSE COUPLING

MOTORM

AFF ABOVE FINISHED FLOOR

AHU AIR HANDLING UNIT

ASHRAE AMERICAN SOCIETY OF HEATING, REFRIGERATING

AND AIR-CONDITIONING ENGINEERS

BAS BUILDING AUTOMATION SYSTEM

BTU BRITISH THERMAL UNIT

CFM CUBIC FEET PER MINUTE

CHWS CHILLED WATER SUPPLY

D.B. DRY BULB

DDC DIRECT DIGITAL CONTROLLER

EX EXISTING

°F DEGREES FAHRENHEIT

FPM FEET PER MINUTE

FT FOOT OR FEET

GPM GALLONS PER MINUTE

HOA HAND/OFF/AUTO SWITCH OR INDICATOR

HP HORSEPOWER

MBH THOUSAND BTUS PER HOUR

MEP MECHANICAL-ELECTRICAL-PLUMBING

PSI POUNDS PER SQUARE INCH

RF RETURN FAN

RPM REVOLUTIONS PER MINUTE

SF SUPPLY FAN

SYS SYSTEM

VFD VARIABLE FREQUENCY DRIVE

W.B. WET BULB

WG WATER GAUGE

MEP-101

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GENERAL MECHANICAL NOTES

1. EQUIPMENT AND PIPING SHOWN ON THIS SHEET IS SHOWN TO CONVEY GENERAL LAYOUT OF THE SPACE RELATIVE TO OTHER MAJOR HVAC

EQUIPMENT. DRAWING IS NOT PROVIDED TO CONVEY ACTUAL DIMENSIONS NOR IS IT PROVIDED AS A COMPREHENSIVE LAYOUT OF FEATURES

AND OBSTRUCTIONS IN THE VICINITY OF THE WORK SITE.

2. DUCTWORK NOT SHOWN FOR CLARITY.

3. SUPPLY AND RETURN PIPING FOR CHILLED WATER AND GLYCOL LOOPS ARE SIMPLIFIED ON THIS DRAWING AND DO NOT SHOW ALL BRANCH LINES, FITTINGS, VALVES, GAUGES, AND COMPONENTS. REFER TO DRAWING MEP-501 FOR MORE DETAILS ON PIPING CONFIGURATION.

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REVISION TABLE

SYM DESCRIPTION DATE APPR

PREFINAL DRAWING 10/24/22

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SCALE: 1/4" = 1'-0"A4 FOURTH FLOOR PLAN

AHU-2AHU-3

AHU-7

AHU-6

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RF-3

AHU-1 AHU-2AH

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AHU-7

AHU-4 CT-2CT-1

AHU-6

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RF-3

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KEY PLAN

SF-3

AHU-3 DDC

1. AIR HANDLING UNIT (AHU) 3 BRANCH SUPPLY AND RETURN PIPING CONTINUES TO MAINS FOR CHILLED WATER AND HOT GLYCOL LOOPS. PIPING IS INSULATED WITH A JACKETED 1-INCH THICK FIBERGLASS INSULATION.

2. PROVIDE NEW CHILLED WATER COILS WITH PRESSURE RELIEF FREEZE PROTECTION AND PROVIDE PREFABRICATED ACCESS

DOORS TO SERVICE RELIEF VALVES.

3. EXISTING BAS DDC CABINET.

NEW WORK KEY NOTES:

CH

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3/4" DRAIN W/GATE VALVE

& HOSE COUPLING (EX)

& HOSE COUPLING (EX)

3/4" DRAIN W/GATE VALVE

EXISTING CHWS

PIPING (EX)

EXISTING BALL VALVE - NO WORK

PRESSURE GAGE

W/ BALL VALVE

REPLACE

COOLING COILS

FOR NEW SIZING

EXISTING CHWR

PIPING (EX)

CALIBRATED

BALANCING VALVE (EX)EXIISTING

THERMOMETER WITH

SEPARABLE SOCKET

- NO WORK

EXISTING AIR VENT -

3/4" GATE VALVE

WITH CAP (EX) - NO

WORK

EXISTING 3-WAY CONTROL

VALVE W/ PNEUMATIC

ACTUATOR - NO WORK

REDUCER (EX) - NO WORK

UNION (EX) - NO WORK

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GENERAL SHEET NOTES

1. DETAILS PROVIDED ON THIS SHEET ARE DIAGRAMMATIC ONLY. THE DETAILS ARE NOT TO SCALE, DO NOT REFLECT THE ACTUAL GEOMETRIC

CONFIGURATION OF THE PIPING SYSTEM, AND DO NOT DEPICT ALL ADJACENT OBSTRUCTIONS. CONTRACTOR SHALL OBTAIN AND/OR VERIFY ALL

DIMENSIONS AND COMPONENTS.

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REVISION TABLE

SYM DESCRIPTION DATE APPR

PREFINAL DRAWING 10/24/22

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SCALE: N.T.S.

EXISTING AIR HANDLING UNIT COIL & PIPING

CFM THRU

COIL

FACE VEL.

(FPM)

AIR

FRICTION IN.

WG.

AIR ENT.

TEMP (°F)

AIR LEAVING

TEMP (°F)

TOTAL

SENSIBLE

HEAT RATIO

TOTAL LOAD

(MBH) MIN. ROWS FINS PER

FOOT

WATER

FLOW (GPM)

WATER P.D.

(FT. H20)UNIT ENT. WATER

TEMP (°F)

D.B. W.B. D.B. W.B.

CHILLED

WATER

COIL

22,575 456 0.27 80.0 67.0 60.2 57.9 0.76 657.8 4 86 109.5 98 44

EXISTING COIL HEAT EXCHANGER SCHEDULE

NOTES:

1. CONTRACTOR SHALL DEMO EXISTING COILS FROM AHU-3. THE EXISTING CHILLED WATER COILS ARE STACKED IN PARALLEL AND ARE APPROXIMATELY 112-INCHES WIDE BY 72-NCHES HIGH IN TOTAL DIMENSION. EACH COIL IS 112-INCHES WIDE X 36-INCHES HIGH.

2. CONTRACTOR SHALL PROVIDE AND INSTALL NEW THERMAL EXCHANGE COILS, TYPICAL FOR CHILLED WATER SYSTEMS COILS STACKED VERTICALLY. PROVIDE COILS WITH PLUGGED VALVE AIR VENTS. THE CONTRACTOR SHALL SIZE NEW COILS PER THE NEW COILS SCHEDULE ABOVE. THE NEW COILS WILL NEED TO BE INCREASED IN SIZE VERTICALLY OR THE CONTACTOR CAN INSTALL ADDITIONAL COILS TO MEET

THE NEW COIL SCHEDULE. THE WIDTH AND DEPTH OF THE COILS SHALL REMAIN UNCHANGED.

3. THE CONTRACTOR SHALL MODIFY THE EXISTING AHU-3 DUCT WORK AS REQUIRED TO ENCAPSULATE THE NEW DIMENSIONS FOR THE NEW COILS. THE CONTRACTOR SHALL STRUCTURALLY REINFORCE THE NEW DUCT WITH ANGLE IRON OR OTHER SUTABLE MATERIALS.

THE DUCT MODIFICATION SHALL BE MADE FOR THE FULL UPSTREAM AND DOWNSTREAM COOLING COIL SECTION OF THE AHU. THE CONTRACTOR SHALL BRACE THE NEW COILS FROM FALLING OVER AGAINST THE TOP AND SIDES OF THE NEW DUCTWORK.

4. THE CONTRACTOR SHALL SEAL AND CAULK ALL OPENINGS AROUND NEW COOLING COILS. ALL AIR FLOW SHALL BE DIRECTED THRU

THE NEW COILS.

5. THE CONTRACTOR SHALL PROVIDE NEW DRAINS AND STAINLESS COIL PANS FOR THE NEW COILS. ALL INTERNAL AHU DRAINS SHALL BE COPPER. THE CONTRACTOR SHALL INSTALL A NEW DRAIN TO THE OUTSIDE MATCHING THE EXISTING SETUP.

6. THE CONTRACTOR SHALL INSULATE ALL NEW INTERNAL DUCT TO MATCH EXISTING INSULATION THICKNESS AND MATERIAL. THE CONTRACTOR SHALL REPLACE ALL FRAYED AND TORN EXISTING INSULATION WITHIN THE AHU WITH NEW INSULATION TO MATCH EXISTING

INSULATION THICKNESS AND MATERIAL.

7. THE EXISTING BYPASS DUCT, BYPASS DAMPER, AND BYPASS ACTUATOR DIRECTLY ABOVE THE COILS SHALL BE REMOVED AND DISCARDED. ALL POWER OR PNEUMATIC LINES SHALL BE SAFED BACK AT THE SOURCE. THE EXISTING BYPASS DUCT MAY BE REUSED IF

SUFFICIENT FOR PORTIONS OF THE NEW COIL ENCLOSURE.

8. THE CONTRACTOR IS RESPONSIBLE FOR ANY PIPING MODIFICATIONS REQUIRED TO FIT THE NEW COILS TO THE EXISTING PIPING.

9. THE CONTRACTOR SHALL PROVIDE FREEZE PROTECTION PRESSURE RELIEF VALVES ON CHILLED WATER COILS. PROVIDE ACCESS TO VALVES. ACCESS OPENING SHALL PROVIDE SUFFICIENT CLEARANCE FOR INSPECTION AND MAINTENANCE OF FREEZE PROTECTION VALVES AND SHALL BE IN ACCORDANCE WITH MANUFACTURER RECOMMENDED CLEARANCES. OPENING SHALL BE FACTORY FABRICATED ACCESS DOORS THAT UTILIZE QUARTER TURN FASTENERS OR CAM LOCKS AND SHALL BE GASKETED AND/OR SEALED FOR AN AIRTIGHT SEAL

10. IF THE HOT GLYCOL PIPING IS DISTURBED DURING THE COMPLETION OF THIS WORK, CONTRACTOR SHALL PROPERLY RECLAIM ALL

LIQUID DRAINED FROM LINES, AND REPLACE/REFILL GLYCOL PIPING SYSTEM AS REQUIRED.

11. ALL CHILLED WATER DRAINED MAY BE PROPERLY DISCARDED. NO REPLACEMENT IS REQUIRED.

FIN HEIGHT

(INCHES)

FIN LENGTH

(INCHES)

NUMBER OF

COILS

36 112 2

NOTE: DIMENSIONS PROVIDED ARE APPROXIMATE. CONTRACTOR SHALL VERIFY ALL DIMENSIONS PRIOR TO SELECTING COILS.

CFM THRU

COIL

FACE VEL.

(FPM)

AIR

FRICTION IN.

WG.

AIR ENT.

TEMP (°F)

AIR LEAVING

TEMP (°F)

TOTAL

SENSIBLE

HEAT RATIO

TOTAL LOAD

(MBH) MIN. ROWS FINS PER

FOOT

WATER

FLOW (GPM)

WATER P.D.

(FT. H20)UNIT ENT. WATER

TEMP (°F)

D.B. W.B. D.B. W.B.

CHILLED

WATER

COIL

30, 700 Max 500 0.27 80.0 67.0 60.2 57.9 0.76 894.54 4 >85 TBD BY

CNTR

NEW COIL HEAT EXCHANGER SCHEDULE

FIN HEIGHT

(INCHES)

FIN LENGTH

(INCHES)

NUMBER OF

COILS

112 2 or 3

NOTE: DIMENSIONS PROVIDED ARE APPROXIMATE. CONTRACTOR SHALL VERIFY ALL DIMENSIONS PRIOR TO SELECTING COILS THE NEW SIZING OF THE COILS SHALL BE DETERMINED BY THE CONTRACTOR PER THE NEW CFM THRU THE COIL.

TBD by

CNTR

TBD by

CNTR

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