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GENERAL NOTES SYMBOL LEGEND
<br />SYMBOL DESCRIPTION
<br />ABBREVIATIONS
<br />MECHANICAL SUMMARY
<br />MECHANICAL SYSTEMS, SERVICE SYSTEMS AND EQUIPMENT
<br />CODE
<br />2018 NC ENERGY CODE: PRESCRIPTIVE ___X___ PERFORMANCE _______
<br />ASHRAE 90.1-2013: PRESCRIPTIVE _______ PERFORMANCE _______
<br />ADDITIONAL PRESCRIPTIVE COMPLIANCE: N/A
<br />_____ 506.2.1 MORE EFFICIENT MECHANICAL EQUIPMENT
<br />_____ 506.2.2 REDUCED LIGHTING POWER DENSITY
<br />_____ 506.2.3 ENERGY RECOVERY VENTILATION SYSTEMS
<br />_____ 506.2.4 HIGHER EFFICIENCY SERVICE WATER HEATING
<br />_____ 506.2.5 ON-SITE SUPPLY OF RENEWABLE ENERGY
<br />_____ 506.2.6 AUTOMATIC DAYLIGHTING CONTROLS
<br />THERMAL ZONE: 4A
<br />WINTER DRY BULB: 20.0 DEGREES F
<br />SUMMER DRY BULB: 94.6 DEGREES F
<br />SUMMER WET BULB: 74.3 DEGREES F
<br />SUMMER HR/MCDB: 129.5 / 81.2 DEGREES F
<br />INTERIOR DESIGN CONDITIONS
<br />WINTER DRY BULB: 70 DEGREES F
<br />SUMMER DRY BULB: 75 DEGREES F
<br />RELATIVE HUMIDITY: 55 %
<br />BUILDING HEATING LOAD: EXISTING
<br />BUILDING COOLING LOAD: EXISTING (ADDING CRAC UNIT FOR REDUNDANCY ONLY)
<br />MECHANICAL SPACING CONDITIONING SYSTEM
<br />UNITARY
<br />DESCRIPTION OF UNIT: REFER TO SCHEDULE ON DRAWINGS
<br />HEATING EFFICIENCY: REFER TO SCHEDULE ON DRAWINGS
<br />COOLING EFFICIENCY: REFER TO SCHEDULE ON DRAWINGS
<br />SIZE CATEGORY OF UNIT: REFER TO SCHEDULE ON DRAWINGS
<br />BOILER: TOTAL BOILER OUTPUT. IF OVERSIZED, STATE REASON. EXISTING
<br />CHILLER: TOTAL CHILLER CAPACITY. IF OVERSIZED, STATE REASON. EXISTING
<br />REFER TO EQUIPMENT SCHEDULES FOR UNIT EFFICIENCIES.
<br />DESIGNER STATEMENT:
<br />TO THE BEST OF MY KNOWLEDGE AND BELIEF, THE DESIGN OF THIS BUILDING COMPLIES WITH THE
<br />MECHANICAL SYSTEMS, SERVICE SYSTEMS AND EQUIPMENT REQUIREMENTS OF THE NORTH CAROLINA
<br />STATE ENERGY CODE
<br />SUPPLY DUCT
<br />RETURN DUCT
<br />BALANCING DAMPER
<br />OUTSIDE AIR INTAKE
<br />DUCT SMOKE DETECTOR
<br />R R
<br />C C
<br />T#
<br />TEMPERATURE SENSOR. LABEL INDICATES UNIT CONTROLLED.
<br />REFRIGERANT PIPING
<br />CONDENSATE PIPING
<br />_ x _
<br />_ x _
<br />_ x _
<br />FIRE DAMPER. 1.5 HOUR FOR 1 HR AND 2HR CONSTRUCTION, 3 HOUR FOR 3 HR
<br />CONSTRUCTION. TYPE B WITH BLADES OUT OF AIR STREAM. UL 555 LISTED.
<br />PROVIDE FACTORY SLEEVE. PROVIDE MULTI-SECTION ASSEMBLY AS REQUIRED
<br />FOR DUCT DIMENSIONS. PROVIDE THIN-LINE MODEL OR OUT OF WALL MODEL
<br />WHERE APPROPRIATE.
<br />FD
<br />SD
<br />POINT OF DISCONNECTION / DEMOLITION
<br />POINT OF CONNECTION
<br />MECHANICAL ABBREVIATIONS
<br />ACCU AIR COOLED CONDENSING UNIT
<br />ACU AIR CONDITIONING UNIT
<br />AD ACCESS DOOR
<br />AF AIR FILTER
<br />AFF ABOVE FINISHED FLOOR
<br />AHU AIR HANDLING UNIT
<br />ALUM ALUMINUM
<br />AMP AMPERE
<br />AP ACCESS PANEL
<br />ARCH ARCHITECTURAL
<br />AVG AVERAGE
<br />CC AIR COLLED CONDENSER
<br />B BOILER
<br />B.I. BLACK IRON
<br />BB BASEBOARD RADIATION
<br />BDD BACKDRAFT DAMPER
<br />BHP BRAKE HORSEPOWER
<br />BO BLANK OFF
<br />BTU BRITISH THERMAL UNIT
<br />BTUH BRITISH THERMAL UNITS PER HOUR
<br />CA COMPRESSED AIR
<br />CAP CAPACITY
<br />CAU COMPRESSED AIR
<br />CC COOLING COIL
<br />CFM CUBIC FEET PER MINUTE
<br />CH CHILLER
<br />CI CAST IRON
<br />CL CENTER LINE
<br />CO CARBON MONOXIDE
<br />CO CLEAN OUT
<br />CONC CONCRETE
<br />CT COOLI NG TOWER
<br />CU CONDENSING UNIT
<br />CUH CABINET UNIT HEATER
<br />CV CONSTANT VOLUME
<br />CY CYCLE
<br />DB DRY BULB TEMPERATURE
<br />DELF DEFLECTION
<br />DIFF DIFFUSER
<br />DN DOWN
<br />DWG DRAWING
<br />DX DIRECT EXPANSION
<br />EA EACH
<br />EAT ENTERING AIR TEMPERATURE
<br />EF EXHAUST FAN
<br />EFF EFFICIENCY
<br />EHC ELECTRIC HEAT COIL
<br />ESP EXTERNAL STATIC PRESSURE
<br />ET EXPANSION TANK
<br />EUH ELECTRIC UNIT HEATER
<br />EWT ENTERING WATER TEMPERATURE
<br />EXH EXHAUST
<br />F.D. FLOOR DRAIN
<br />FA FREE AREA
<br />FCU FAN COIL UNIT
<br />FD FIRE DAMPER
<br />FLEX FLEXIBLE
<br />FM FLOW METER
<br />FP FAN POWERED BOX
<br />FPM FEET PER MINUTE
<br />FT FEET
<br />FT2 SQUARE FEET
<br />FT3 CUBIC FEET
<br />°F DEGREES FARENHEIT
<br />GA GAUGE
<br />GC GENERAL CONTRACTOR
<br />GE GENERAL EXHAUST
<br />GPM GALLONS PER MINUTE
<br />GR GRILLE
<br />*H ENTHAPLY DIFFERENCE
<br />HC HEATING COIL
<br />HORIZ HORIZONTAL
<br />HP HORSEPOWER
<br />HR HOUR
<br />HU HUMIDIFIER
<br />HVAC HEATING VENTILATION & AIR
<br />CONDITIONING
<br />HX HEAT EXCHANGER
<br />SHEET INDEX - MECHANICAL
<br />Sheet
<br />Number Sheet Name Current
<br />Revision
<br />Current
<br />Revision Date
<br />M0.00 LEAD SHEET
<br />M1.01 DEMOLITION PLAN - THIRD FLOOR
<br />M2.01 DUCTWORK AND PIPING PLAN - THIRD FLOOR
<br />M2.02 ROOF PLAN
<br />M5.01 DETAILS
<br />M5.02 UL DETAILS
<br />M7.01 MECHANICAL SCHEDULES
<br />1. THE CONTRACT DOCUMENTS ARE COMPLIMENTARY AND WHAT IS REQUIRED BY ONE SHALL BE AS BINDING AS IF
<br />REQUIRED BY ALL. IN THE CASE OF A CONFLICT, DISAGREEMENT, OR AMBIGUITY, PROVIDE THE BETTER QUALITY. IN THE
<br />CASE OF A CONFLICT, DISAGREEMENT, OR AMBIGUITY, PROVIDE THE GREATER QUANTITY OF WORK.
<br />2. COORDINATE ALL WORK WITH THAT OF THE OTHER DISCIPLINES PRIOR TO THE INSTALLATION OF ANY PIPING,
<br />DUCTWORK, OR EQUIPMENT.
<br />3. PERFORM A COMPLETE REVIEW OF THE CONTRACT DOCUMENTS PRIOR TO INSTALLATION OF THE MECHANICAL
<br />SYSTEMS AND REVIEW ANY CONFLICTS WITH THE ENGINEER.
<br />4. DURING THE CONSTRUCTION PROCESS, PROTECT ALL EQUIPMENT, DEVICES, DUCTWORK, PIPING, AND
<br />APPURTENANCES FROM DIRT, DEBRIS, AND RAIN. STORE IN A COVERED LOCATION OFF OF THE FLOOR AND ABOVE
<br />STANDING WATER. ITEMS FOUND LYING IN STANDING WATER ON THE JOB SITE WILL NOT BE ACCEPTED FOR
<br />INSTALLATION.
<br />5. ENSURE THAT ITEMS TO BE FURNISHED OR PROVIDED WILL FIT IN THE SPACE AVAILABLE. MAKE NECESSARY FIELD
<br />MEASUREMENTS TO ASCERTAIN SPACE REQUIREMENTS, INCLUDING THOSE FOR CONNECTIONS, AND PROVIDE SUCH
<br />SIZES AND SHAPES OF EQUIPMENT THAT ARE THE TRUE INTENT AND MEANING OF THE CONTRACT DOCUMENTS.
<br />PROVIDE THE ENGINEER WITH SCALED COORDINATION DRAWINGS OF ALL MECHANICAL SPACES AND ABOVE CEILING
<br />INSTALLATIONS.
<br />6. LOCATE ALL EQUIPMENT TO PROVIDE MAXIMUM SPACE FOR MAINTENANCE AND SERVICE.
<br />7. PROVIDE ALL ELECTRICAL AND CONTROL CONNECTIONS TO THE EQUIPMENT PROVIDED. REFER TO THE ELECTRICAL
<br />DRAWINGS FOR LOCATIONS OF JUNCTION BOXES, DISCONNECTS, CIRCUIT BREAKERS (PANELBOARDS). TYPE, SIZE, AND
<br />NUMBER OF CONDUCTORS AND CONDUITS TO EQUIPMENT SHALL BE EQUIVALENT TO THE CONDUCTORS AND
<br />CONDUITS PROVIDED BY DIVISION 26. IN CASE OF MECHANICAL EQUIPMENT CONNECTION TO A CIRCUIT BREAKER, THE
<br />NUMBER AND SIZE OF THE CONDUCTORS AND CONDUITS SHALL CONFORM TO THE LATEST NATIONAL ELECTRICAL
<br />CODE REGULATIONS. ALL MOTOR STARTERS, SWITCHES, CONTROL DEVICES, ETC., PROVIDED BY DIVISION 23 SHALL BE
<br />RECESSED IN THE WALLS, EXCEPT WHEN THESE ITEMS ARE LOCATED IN MECHANICAL SPACES. PROVIDE A NAMEPLATE
<br />FOR ALL EQUIPMENT, SWITCHES, CONTROL DEVICES, ETC. REFER TO THE GENERAL PROVISIONS SECTION OF THE
<br />DIVISION 23 SPECIFICATIONS.
<br />8. PROVIDE ALL SUPPORT DEVICES NECESSARY FOR THE WORK. COORDINATE ALL LOCATIONS WITH OTHER DISCIPLINES
<br />PRIOR TO INSTALLATION.
<br />9. DO NOT SCALE THESE DRAWINGS. FIELD CONFIRM ALL DIMENSIONS.
<br />10. PROVIDE ALL PENETRATIONS PERTAINING TO THE WORK THROUGH THE ROOF, WALLS, AND FLOORS. PROVIDE THE
<br />WATERPROOFING AROUND THE OPENINGS.
<br />11. COORDINATE THE SIZE AND LOCATION OF ALL PENETRATIONS THROUGH THE ROOF WITH EXISTING CONDITIONS AND
<br />THE AUTHORIZED ROOFER TO MAINTAIN WARRANTIES.
<br />12. FIRE SEAL ALL FLOOR AND FIRE WALL PIPE AND CONDUIT PENETRATIONS WITH A UL APPROVED METHOD.
<br />13. PROVIDE ALL CUTTING AND PATCHING OF FLOORS AND WALLS FOR THE WORK UNLESS OTHERWISE INDICATED.
<br />14. ALL WALL AND FLOOR PENETRATIONS SHALL BE SEALED. SEAL ALL RATED FLOOR AND WALL PENETRATIONS WITH A UL
<br />APPOVED METHOD. FOR NON-RATE WALLS AND FLOORS, THE ANNULAR SPACE SHALL BE PACKED WITH MINERAL
<br />WOOL, OR ANOTHER SUITABLE NON-COMBUSTIBLE MATERIAL, AND CAULKED AIR RIGHT.
<br />15. CONDENSATE DRAINS SHALL BE A MINIMUM OF 1"∅COPPER, INSULATED WITH A 25/50 RATED CLOSED CELL RUBBER
<br />TUBING HAVING A NOMINAL WALL THICKNESS OF 1". PROVIDE A P-TRAP WITH VENT AND CLEANOUT PLUG AT THE UNIT.
<br />ALL CONDENSATE LINES SHALL BE ROUTED TO A FLOOR DRAIN OR AS INDICATED ON THE DRAWINGS.
<br />16. DUCT DIMENSIONS SHOWN ARE INSIDE CLEAR UNLESS OTHERWISE INDICATED.
<br />17. PROVIDE FLEXIBLE DUCT CONNECTORS AT SUPPLY, RETURN, AND EXHAUST DUCTWORK CONNECTIONS TO ALL AIR
<br />HANDLING UNITS AND FANS.
<br />18. PROVIDE SHEET METAL COLLAR AT ALL LOCATIONS WHERE DUCTS PENETRATE WALLS. COLLARS SHALL BE OF A GAGE
<br />EQUIVALENT TO THE DUCTWORK.
<br />19. ALL ACCESS DOORS IN THE DUCTWORK SHALL BE LOCATED TO EASILY ACCESS FIRE DAMPERS. COORDINATE CEILING
<br />ACCESS PANEL LOCATIONS WITH ALL OTHER DISCIPLINES. ALL ACCESS DOORS IN DUCTWORK FOR FIRE DAMPERS,
<br />DUCT-MOUNTED COILS, CONTROL DAMPERS, HUMIDIFIERS, DUCT SMOKE DETECTORS, AND OTHER DEVICES SHALL
<br />CONFORM TO THE FOLLOWING SCHEDULE:
<br />DUCT WIDTH ACCESS DOOR SIZE
<br />UP TO 17" WIDE 16"x12" (OR AS LARGE AS POSSIBLE)
<br />18" TO 22" 16"x16"
<br />22" AND LARGER 18"x18"
<br />20. INSTALL THERMOSTATS, SENSORS, AND OTHER CONTROLS 48" ABOVE FINISHED FLOOR OR AS INDICATED ON THE
<br />DRAWINGS. COORDINATE WITH OTHER DISCIPLINES TO ALIGN EXACTLY WITH ADJACENT DEVICES SUCH AS LIGHT
<br />SWITCHES AND CONTROLS.
<br />21. PROVIDE ALL THERMOSTATS, SENSORS, CONTROLS, WIRING, AND CONDUIT.
<br />22. ALL DRAWINGS ARE DIAGRAMMATIC. VISIT THE SITE, BECOME FAMILIAR WITH THE EXISTING CONDITIONS, AND
<br />COORDINATE THE DUCT LAYOUT WITH ALL DISCIPLINES PRIOR TO INSTALLATION.
<br />23. SUPPORT ALL DUCTWORK, PIPING, EQUIPMENT, AND APPURTENANCES FROM THE BUILDING STRUCTURE AND NOT THE
<br />ROOF DECK.
<br />24. ALL HANGER RODS SHALL BE CUT TO WITHIN 1" OF THE BOTTOM NUT. IN MECHANICAL ROOMS, ALL HANGERS OR
<br />OTHER EQUIPMENT BELOW 7'-4" SHALL BE WRAPPED WITH FOAM INSULATION FOR PERSONNEL PROTECTION.
<br />25. EQUIPMENT SHALL MEET OR EXCEED ALL REQUIREMENTS IN THE 2013 VERSION OF ASHRAE STANDARD 90.1 AND THE
<br />INTERNATIONAL ENERGY CONSERVATION CODE WITH NORTH CAROLINA AMENDMENTS.
<br />26. COORDINATE THE ROUGH-IN OF PIPING WITH THE GENERAL CONTRACTOR AND OTHER TRADES.
<br />27. ALL PIPING SHALL BE PERMANENTLY IDENTIFIED BY CONTENT, FUNCTION, AND DIRECTION OF FLOW (I.E., HOT WATER
<br />SUPPLY →). ALL IDENTIFICATION MARKERS SHALL BE PERMANENTLY STENCILED ON THE PIPING IN A LEGIBLE MANNER
<br />AT NO GREATER DISTANCE THAN 10'-0" ON CENTER.
<br />28. DO NOT INSTALL PIPING OR DUCTWORK OVER ANY ELECTRICAL PANEL OR SWITCHGEAR.
<br />29. ZIP TIES WILL NOT BE PERMITTED FOR USE AS CABLE SUPPORTS. WHERE NOT REQUIRED TO BE INSTALLED IN
<br />RACEWAY BY THE SPECIFICATION, PROVIDE J-HOOK SUPPORTS AND BRIDLE RINGS. CABLE SHALL BE INDEPENDENTLY
<br />SUPPORTED AND SHALL NOT BE SUPPORTED OF THE WORK OF OTHER TRADES.
<br />MECHANICAL ABBREVIATIONS
<br />HZ HERTZ
<br />IF INJECTION FAN
<br />IN INCHES
<br />INSUL INSULATION
<br />ISDL ISOLATION
<br />KE KITCHEN EXHAUST
<br />KW KILOWATT
<br />LAT LEAVING AIR TEMPERATURE
<br />LBS POUNDS
<br />LF LINEAR FEET
<br />LLC LIQUID LEVEL CONTROLLER
<br />LWT LEAVING WATER TEMPERATURE
<br />MAT MIXED AIR TEMPERATURE
<br />MAX MAXIMUM
<br />MIN MINIMUM
<br />N.C. NORMALLY CLOSED
<br />N.O. NORMALLY OPEN
<br />NC NOISE CRITERIA
<br />NIC NOT IN CONTRACT
<br />NK NECK
<br />NPSH NET POSITIVE SUCTION HEAT
<br />NTS NOT TO SCALE
<br />OA OUTSIDE AIR
<br />OAI OUTSIDE AIR INTAKE
<br />OBD OPPOSED BLADE DAMPER
<br />OD OUTSIDE DAMPER
<br />OV OUTLET VELOCITY
<br />P PUMP
<br />PD PRESSURE DROP
<br />PH PHASE
<br />PRESS PRESSURE
<br />PRV PRESSURE REDUCING VALVE
<br />PSIG POUNDS PER SQUARE INCH
<br />ΔP PRESSURE DIFFERENTIAL
<br />RA RETURN AIR
<br />REFRIG REFRIGERANT
<br />REG REGISTER
<br />RET RETURN
<br />RF RELIEF / RETURN FAN
<br />RH RELATIVE HUMIDITY
<br />RM ROOM
<br />RO REVERSE OSMOSIS
<br />RPM REVOLUTIONS PER MINUTE
<br />RTU ROOFTOP UNIT
<br />SA SUPPLY AIR
<br />SD SMOKE DAMPER
<br />SF SUPPLY FAN
<br />SM SHEET METAL
<br />SP STATIC PRESSURE
<br />SQ. FT. SQUARE FEET
<br />SS STAINLESS STEEL
<br />ST SOUND TRAP
<br />T TANK
<br />TC TEMPERATURE CONTROL
<br />TE TOILET EXHAUST
<br />TG TRANSFER GRILLE
<br />TSP TOTAL STATIC PRESSURE
<br />TYP TYPICAL
<br />ΔT TEMPERATURE DIFFERENTIAL
<br />UH UNIT HEATER
<br />V VOLTAGE
<br />VAV VARIABLE AIR VOLUME
<br />VD VOLUME DAMPER
<br />VEL VELOCITY
<br />VFD VARIABLE FREQUENCY DRIVE
<br />VIB VIBRATION
<br />W WATT
<br />WB WET BULB TEMPERATURE
<br />WC WATER COLUMN
<br />WMS WIRE MESH SCREEN
<br />WP WORKING PRESSURE
<br />DRAWN BY:CHECKED
<br />BY:
<br />REVISIONS
<br />SCAMPBELL@PDCENGINEERS.COM
<br />ORANGE COUNTY WEST OFFICE BUILDINGHVAC UPGRADELEAD SHEET
<br />M0.00
<br />BID/PERMIT
<br />ORANGE COUNTYJAV SWC
<br />PDC 23020 02/20/2024
<br />NUMBER DATE DESCRIPTION
<br />02/20/2024
<br />Docusign Envelope ID: 8DED1454-68D2-4E36-9FC6-E56FF2124E5D
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