Hvac Abbreviations Hvac Abbreviations (Continued)

HVAC ABBREVIATIONS HVAC ABBREVIATIONS (CONTINUED) HVAC PIPING SYMBOLS CAPPED PIPE ABS ABV AC AFF AHJ ALUM ALT AMP ANSI ATC AUTO AUX APPROX APD ASHRAE ASME ATM AVG AWG BAS BC BDD BHP BJ BLW BLDG BTU BV C CAP CCW CENTR CFM CKT CLG CO COEFF COL CONC COND CONN CONST CONT CONTR CU FT CU IN CW dB dBA DB DC DEG ( ) DHW DIA DIFF DISCH DN DPR DPT DR DS DWG DX EA EAT EC EDB EER EFF EL ELECT ENCLOS ENT EQUIP ETC ESP EWB EWT EXH EXP ABSOLUTE ABOVE ALTERNATING CURRENT ABOVE FINISH FLOOR AUTHORITY HAVING JURISDICTION ALUMINUM ALTERNATE OR ALTITUDE AMPERE AMERICAN NATIONAL STANDARDS INSTITUTE AUTOMATIC TEMPERATURE CONTROL AUTOMATIC AUXILIARY APPROXIMATELY AIR PRESSURE DROP AMERICAN SOCIETY OF HEATING, REFRIGERANT AND AIR CONDITIONING AMERICAN SOCIETY OF MECHANICAL ENGINEERS ATMOSPHERE AVERAGE AMERICAN WIRE GAUGE BUILDING AUTOMATION SYSTEM BALANCING COCK BACKDRAFT DAMPER BRAKE HORSE POWER BALL JOINT BELOW BUILDING BRITISH THERMAL UNIT BALL VALVE CELSIUS CAPACITY COUNTER CLOCKWISE CENTRIFUGAL CUBIC FEET PER MINUTE CIRCUIT CEILING CLEAN OUT COEFFICIENT COLUMN CONCRETE CONDENSATE CONNECTION CONSTRUCTION CONTINUATION CONTRACTOR CUBIC FEET CUBIC INCH CLOCKWISE DECIBEL DECIBEL A-WEIGHTED DRY BULB TEMPERATURE DIRECT CURRENT DEGREE DOMESTIC HOT WATER DIAMETER DIFFUSER DISCHARGE DOWN DAMPER DEW POINT TEMPERATURE DRAIN DISCONNECT SWITCH DRAWING DIRECT EXPANSION EACH OR EXHAUST AIR ENTERING AIR TEMPERATURE ELECTRICAL CONTRACTOR ENTERING DRY BULB ENERGY EFFICIENCY RATIO EFFICIENCY ELEVATION ELECTRIC ENCLOSURE ENTERING EQUIPMENT ETCETERA EXTERNAL STATIC PRESSURE ENTERING WET BULB ENTERING WATER TEMPERATURE EXHAUST EXPANSION F FA FAT FC FLG FLR FPI FPM FR FT FTG FAHRENHEIT FACE AREA OR FREE AREA FINAL AIR TEMPERATURE FLEXIBLE CONNECTION OR FORWARD CURVED FLANGE FLOOR FINS PER INCH FEET PER MINUTE FROM FEET FITTING GA GC GR GRAV GAUGE GENERAL CONTRACTOR GRILLE OR GAINS GRAVITY HC HP HORIZ HR HTG HTRS HZ HVAC CONTRACTOR HORSE POWER HORIZONTAL HOUR HEATING HEATERS FREQUENCY (HERTZ) D IDT INSUL INSIDE DIAMETER INSULATED DUCT TRANSITION INSULATED PIPE ELBOW UP JT JOINT PIPE ELBOW DOWN KW KWH KILOWATT KILOWATT HOUR LAT LBS LDB LF LIQ LTG LWB LEAVING AIR TEMPERATURE POUNDS LEAVING DRY BULB LINEAR FEET LIQUID LIGHTING LEAVING WET BULB MAX MBH MC MFGR MIN MTD MTL MTR MAXIMUM THOUSAND BTU's MECHANICAL CONTRACTOR MANUFACTURER MINIMUM MOUNTED METAL MOTOR OA OD OPER OPNG S1 % PC PD PH PRESS PS PSIA PSIG PERCENT PLUMBING CONTRACTOR PRESSURE DROP PHASE PRESSURE PIPE SUPPORT POUNDS PER SQUARE INCH ABSOLUTE POUNDS PER SQUARE INCH GAUGE QNTY QUANTITY R RA RD REV REFRIG REQD RET RH RPM RWC THERMAL RESISTANCE RETURN AIR ROOF DRAIN REVOLUTIONS REFRIGERANT REQUIRED RETURN RELATIVE HUMIDITY REVOLUTIONS PER MINUTE RAIN WATER CONDUCTOR S SA SCH SEER SENS SG SH SP SPEC SQ FT SS STD STR SUCT SUP SW SECOND SUPPLY AIR SCHEDULE SEASONAL ENERGY EFFICIENCY RATIO SENSIBLE SPECIFIC GRAVITY SENSIBLE HEAT STATIC PRESSURE SPECIFICATION SQUARE FEET STAINLESS STEEL STANDARD STRAINER SUCTION SUPPLY SWITCH TEST, ADJUST AND BALANCE TEMPERATURE OR TEMPORARY TOTAL HEAT OR THERMOMETER TONS OF REFRIGERANT TOTAL TRANSITION THERMOSTAT TOTAL STATIC PRESSURE TURNING VANE TYPICAL UNO UNLESS NOTED OTHERWISE V VEL VOL VOLT VELOCITY VOLUME W W/ WB WG WPD WT WATT WITH WET BULB WATER GAUGE WATER PRESSURE DROP WEIGHT TAG AIRFLOW 1. TEMPERATURE SENSOR GRILLE, REGISTER AND DIFFUSER TAG FLEXIBLE CONNECTION / VIBRATION ISOLATION B. ALL STARTERS, DISCONNECT SWITCHES, MOTOR CONTROL CENTERS, AND VARIABLE FREQUENCY DRIVES, FOR EQUIPMENT PROVIDED UNDER DIVISION 23, SHALL BE FURNISHED UNDER DIVISION 23 AND INSTALLED UNDER DIVISION 26. FACTORY MOUNTED STARTERS, DISCONNECTS SWITCHES, AND VARIABLE FREQUENCY DRIVES SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 23. HVAC CONTRACTOR SHALL PROVIDE STARTERS, DISCONNECT SWITCHES, MOTOR CONTROL CENTERS AND VARIABLE FREQUENCY DRIVES IN ACCORDANCE WITH DIVISION 26. SUPPLY DIFFUSER - 3-WAY BLOW C. DIVISION 23 SHALL SUBMIT WIRING DIAGRAMS TO THE ARCHITECT/ENGINEER FOR APPROVAL AND PROVIDE APPROVED DIAGRAMS TO THE DIVISION 26 CONTRACTOR SO THAT THE ELECTRICAL WORK MAY BE PROPERLY ACCOMPLISHED. SUPPLY DIFFUSER - 2-WAY BLOW HVAC ELECTRICAL SYMBOLS SUPPLY DIFFUSER - 1-WAY BLOW MOTOR STARTER D. DIVISION 23 CONTRACTOR SHALL FULLY COOPERATE WITH THE OTHER DIVISIONS AND TRADES ON THE PROJECT, AND THEIR MANUFACTURERS, IN PROMPTLY PROVIDING THE INFORMATION REQUIRED FOR PROPER COORDINATION OF MOTOR PROTECTION, CONTROL EQUIPMENT AND WIRING, AND THE OTHER CHARACTERISTICS OF THE EQUIPMENT. AIR FLOW ARROW DISCONNECT SWITCH LINEAR SLOT DIFFUSER TOGGLE SWITCH CEILING MOUNTED RETURN OR EXHAUST GRILLE / REGISTER 24/12 E. IT SHALL BE THE RESPONSIBILITY OF THE DIVISION 23 AND DIVISION 26 CONTRACTORS TO CHECK FOR ADEQUACY OF SUPPLY WIRING, OVERCURRENT PROTECTION, PROPER VOLTAGE, PHASE ROTATION AND FINAL LOCATION OF EQUIPMENT PROVIDED PRIOR TO THE RUNNING OF ANY CONDUIT OR WIRING. COORDINATE WITH DIVISION 26 TO ASSURE PROPER ELECTRICAL SERVICE IS PROVIDED TO EQUIPMENT UNDER DIVISION 23. INTERIOR CLEAR DUCTWORK DIMENSIONS; WIDTH/HEIGHT SUPPLY DUCT TOWARD VIEWER HVAC PIPING ABBREVIATIONS SUPPLY DUCT AWAY FROM VIEWER F. EQUIPMENT CONNECTIONS SHALL BE MADE THROUGH CONDUIT OR RACEWAYS IN ACCORDANCE WITH DIVISION 26, WITH THE EXCEPTION THAT CONNECTIONS TO MOTORS SHALL BE MADE THROUGH LIQUID TIGHT FLEXIBLE METAL CONDUIT WITH EQUIPMENT GROUNDING CONDUCTOR. CONDENSATE DRAIN RETURN OR EXHAUST DUCT TOWARD VIEWER RL REFRIGERANT LIQUID RETURN OR EXHAUST DUCT AWAY FROM VIEWER RS 2. SHEET METAL GENERAL NOTES 1. 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. 1. ALL DUCTWORK DIMENSIONS, AS SHOWN ON THE DRAWINGS, ARE INTERNAL CLEAR DIMENSIONS AND DUCT SIZE SHALL BE INCREASED TO COMPENSATE FOR DUCT LINING THICKNESS WHERE SPECIFIED. 2. 2. CONTRACT DOCUMENT DRAWINGS FOR MECHANICAL WORK ARE DIAGRAMMATIC AND ARE INTENDED TO CONVEY SCOPE AND GENERAL ARRANGEMENT ONLY. CERTAIN ITEMS SUCH AS RISES AND DROPS IN DUCTWORK, ACCESS DOORS, VOLUME DAMPERS, ETC. ARE INDICATED ON THE CONTRACT DOCUMENT DRAWINGS FOR CLARITY FOR A SPECIFIC LOCATION REQUIREMENT AND SHALL NOT BE INTERPRETED AS THE EXTENT OF THE REQUIREMENTS FOR THESE ITEMS. 3. INSTALL ALL MECHANICAL EQUIPMENT AND APPURTENANCES IN ACCORDANCE WITH MANUFACTURERS' RECOMMENDATIONS, CONTRACT DOCUMENTS AND APPLICABLE CODES AND REGULATIONS. 3. ALL DUCTWORK SHALL BE COORDINATED WITH ALL TRADES INVOLVED. OFFSETS IN DUCTS, INCLUDING DIVIDED DUCTS AND TRANSITIONS AROUND OBSTRUCTIONS, SHALL BE PROVIDED AT NO ADDITIONAL COST TO THE OWNER. PROVIDE VIBRATION ISOLATION FOR ALL MECHANICAL EQUIPMENT TO PREVENT TRANSMISSION OF VIBRATION TO BUILDING STRUCTURE. 4. UNLESS OTHERWISE NOTED, ALL DUCTWORK SHALL BE OVERHEAD, TIGHT TO THE UNDERSIDE OF THE STRUCTURE, WITH SPACE FOR INSULATION IF REQUIRED. 5. PROVIDE ALL 90-DEGREE SQUARE ELBOWS WITH DOUBLE RADIUS TURNING VANES UNLESS OTHERWISE INDICATED. ELBOWS IN DISHWASHER, KITCHEN, AND LAUNDRY EXHAUSTS SHALL BE OF UNVANED SMOOTH RADIUS CONSTRUCTION WITH A RADIUS EQUAL TO 1-1/2 TIMES THE WIDTH OF THE DUCT. PROVIDE ACCESS DOORS UPSTREAM OF ALL ELBOWS WITH TURNING VANES. 6. PROVIDE ACCESS DOORS IN DUCTWORK TO PROVIDE ACCESS FOR ALL SMOKE DETECTORS, FIRE DAMPERS, SMOKE DAMPERS, VOLUME DAMPERS, HUMIDIFIERS, COILS, AND OTHER ITEMS LOCATED IN THE DUCTWORK THAT REQUIRE SERVICE AND/OR INSPECTION. 4. 5. 6. THE LOCATION OF EXISTING EQUIPMENT AND UTILITIES IS SHOWN IN AN APPROXIMATE WAY ONLY. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. THE CONTRACTOR SHALL PAY FOR AND REPAIR ALL DAMAGES CAUSED BY FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES UNLESS OTHERWISE INDICATED. COORDINATE CONSTRUCTION OF ALL MECHANICAL WORK WITH ARCHITECTURAL, STRUCTURAL, CIVIL, ELECTRICAL WORK, ETC., SHOWN ON OTHER CONTRACT DOCUMENT DRAWINGS. 7. ALL TESTS SHALL BE COMPLETED BEFORE ANY MECHANICAL EQUIPMENT OR PIPING INSULATION IS APPLIED. 8. LOCATE ALL TEMPERATURE, PRESSURE, AND FLOW MEASURING DEVICES IN ACCESSIBLE LOCATIONS WITH THE STRAIGHT SECTION OF PIPE OR DUCT UP- AND DOWNSTREAM AS RECOMMENDED BY THE MANUFACTURER FOR PROPER ACCURACY. 9. TESTING, ADJUSTING, AND BALANCING AGENCY SHALL BE A MEMBER OF THE ASSOCIATED AIR BALANCE COUNCIL (AABC) OR THE NATIONAL ENVIRONMENTAL BALANCING BUREAU (NEBB). TESTING, ADJUSTING, AND BALANCING SHALL BE PERFORMED IN ACCORDANCE WITH THE AABC STANDARDS. 10. 11. POWER REQUIREMENTS A. ALL POWER WIRING FOR MECHANICAL EQUIPMENT PROVIDED UNDER DIVISION 23 SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 26 TO THE POINT OF FINAL CONNECTION (FROM THE SOURCE TO THE STARTERS, DISCONNECT SWITCHES, MCC'S OR VFD'S AND TO EQUIPMENT, MOTOR, OR OTHER CONNECTION POINT). EXCEPT WHERE SPECIFICALLY INDICATED OTHERWISE, ALL POWER WIRING TO THE POINT OF FINAL CONNECTION FOR EQUIPMENT PROVIDED UNDER DIVISION 23 SHALL BE ACCOMPLISHED UNDER DIVISION 26. OUTSIDE AIR DUCT AWAY FROM VIEWER HVAC EQUIPMENT ABBREVIATIONS D CHANGE IN DUCT ELEVATION DROP INDICATED BY "D" R CHANGE IN DUCT ELEVATION RISE INDICATED BY "R" B. FINAL ELECTRICAL POWER CONNECTIONS TO ALL EQUIPMENT SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 26. IN GENERAL, THE POINT OF FINAL CONNECTION SHALL BE THE TERMINAL HOUSING ON THE EQUIPMENT, MOTOR, OR AN INTERNAL JUNCTION BOX ON THE EQUIPMENT OR ITEM. IF NO JUNCTION BOX IS FURNISHED, A JUNCTION BOX SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 26. WIRE LEADS OF ADEQUATE LENGTH TO ENSURE A PROPER CONNECTION AT THE FINAL LOCATION SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 26. FLEXIBLE DUCT AIR-COOLED CONDENSING UNIT AIR-CONDITIONING UNIT (SELF CONTAINED) AIR HANDLING UNIT CONDENSER COMPUTER ROOM AIR-CONDITIONING UNIT DRY COOLER DUAL DUCT BOX DEDICATED OUTSIDE AIR SYSTEM DOMESTIC WATER HEATER EXHAUST FAN ENERGY RECOVERY UNIT ENERGY RECOVERY VENTILATOR EVAPORATOR ELECTRIC WALL HEATER FILTER FAN COIL UNIT GRAVITY ROOF VENTILATOR INTAKE HOOD MAKE-UP AIR UNIT MOTOR CONTROL CENTER SOUND ATTENUATOR SUPPLY FAN SPLIT SYSTEM AIR CONDITIONING UNIT SPLIT SYSTEM CONDENSING UNIT UNIT HEATER UNIT VENTILATOR VARIABLE FREQUENCY DRIVE VARIABLE REFRIGERANT FLOW FLEXIBLE CONNECTION COORDINATE ALL EQUIPMENT CONNECTIONS WITH MANUFACTURERS' CERTIFIED DRAWINGS. COORDINATE AND PROVIDE ALL DUCT AND PIPING TRANSITIONS REQUIRED FOR FINAL EQUIPMENT CONNECTIONS TO FURNISHED EQUIPMENT. FIELD VERIFY AND COORDINATE ALL DUCT AND PIPING DIMENSIONS BEFORE FABRICATION. MANUAL VOLUME DAMPER CONCRETE HOUSEKEEPING PADS FOR MECHANICAL EQUIPMENT SHALL BE SIZED AND LOCATED BY THE MECHANICAL CONTRACTOR. MINIMUM CONCRETE PAD THICKNESS SHALL BE 6 INCHES. PAD SHALL EXTEND BEYOND THE EQUIPMENT A MINIMUM OF 6 INCHES ON EACH SIDE. CONCRETE HOUSEKEEPING PADS SHALL BE PROVIDED BY THE GENERAL CONTRACTOR. IT SHALL BE THE RESPONSIBILITY OF THE MECHANICAL CONTRACTOR TO COORDINATE THE SIZE AND LOCATION OF CONCRETE HOUSEKEEPING PADS WITH THE GENERAL CONTRACTOR. 13. REINFORCEMENT, DETAILING, AND PLACEMENT OF CONCRETE SHALL CONFORM TO ASTM 315 AND ACI 318. CONCRETE SHALL CONFORM TO ASTM C94. CONCRETE WORK SHALL CONFORM TO ACI 318, PART ENTITLED “CONSTRUCTION REQUIREMENTS.” COMPRESSIVE STRENGTH IN 28 DAYS SHALL BE 3,000 PSI. TOTAL AIR CONTENT OF EXTERIOR CONCRETE SHALL BE BETWEEN 5 AND 7 PERCENT BY VOLUME. SLUMP SHALL BE BETWEEN 3 AND 4IN. CONCRETE SHALL BE CURED FOR 7 DAYS AFTER PLACEMENT. C. WIRING, OVERCURRENT PROTECTION DEVICES, VOLTAGE, PHASE, ROTATION AND FINAL LOCATION OF ALL EQUIPMENT PROVIDED UNDER DIVISION 23 SHALL BE COORDINATED WITH ALL SIMILAR DEVICES AND POWER WIRING FURNISHED AND INSTALLED UNDER DIVISION 26. COORDINATION SHALL BE ACCOMPLISHED PRIOR TO THE RUNNING OF ANY CONDUIT OR WIRING. M MOTORIZED CONTROL DAMPER 15. TRANSITION; SYMMETRIC TRANSITION; ASYMMETRIC TRANSITION; RECTANGULAR TO ROUND 90 DEG RADIUS ELBOW (R/W 1.5) MITERED ELBOW WITH TURNING VANES TEE, BOOT ENTRY BRANCH TEE, ROUND BRANCH TEE, CONICAL ROUND BRANCH SOME OF THESE SYMBOLS MAY NOT BE USED UNDER THIS PROJECT. SEE THE GENERAL PROJECT NOTES FOR ADDITIONAL REQUIREMENTS. 12. 14. 3. CONTROL REQUIREMENTS A. ALL CONTROL WIRING (LINE VOLTAGE AND/OR LOW VOLTAGE) FOR MECHANICAL EQUIPMENT PROVIDED UNDER DIVISION 23, SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 23. WIRING FROM THE POWER SOURCE TO ALL CONTROL PANELS, DDC CONTROL PANELS, STARTERS, OPERATOR WORK STATIONS (PC'S, PRINTERS, MONITORS, AND OTHER WORK STATION EQUIPMENT) AND OTHER CONTROL EQUIPMENT REQUIRED FOR A COMPLETE AND OPERABLE CONTROL SYSTEM SERVING MECHANICAL EQUIPMENT PROVIDED UNDER DIVISION 23 SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 23. B. ALL WIRING FROM CONTROL PANELS TO CONTROL DEVICES FOR MECHANICAL EQUIPMENT PROVIDED UNDER DIVISION 23 SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 23. ALL CONTROL WIRE AND CONDUIT SHALL COMPLY WITH THE NATIONAL ELECTRIC CODE AND DIVISION 26 OF THE SPECIFICATIONS. ALL CONTROL WIRING SHALL BE IN CONDUIT. 16. D. ELECTRICAL CONTROL WIRING FOR CONNECTION OF TEMPERATURE CONTROLLERS, PUSH BUTTONS, INTERLOCKS IN MOTOR CONTROLLERS, PNEUMATIC SWITCHES AND LIKE ITEMS IS SPECIFIED UNDER THE CONTROL SECTION(S) IN DIVISION 23 AND INSTALLED BY DIVISION 23. E. ALL MOTORS, MOUNTS, REMOTE MOUNTED PUSH BUTTON CONTROLS AND ALL SPEED CONTROL SWITCHES FOR MULTISPEED MOTORS FOR ALL EQUIPMENT PROVIDED UNDER DIVISION 23 SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 23. WHEN MECHANICAL WORK IS SUBCONTRACTED, IT SHALL BE THE MECHANICAL CONTRACTOR'S RESPONSIBILITY TO COORDINATE SUBCONTRACTORS AND THE ASSOCIATED CONTRACTS. WHEN DISCREPANCIES ARISE PERTAINING TO WHICH CONTRACTOR PROVIDED A PARTICULAR ITEM OF THE MECHANICAL CONTRACT OR WHICH CONTRACTOR PROVIDES FINAL CONNECTIONS FOR A PARTICULAR ITEM OF THE MECHANICAL CONTRACT, IT SHALL BE BROUGHT TO THE ATTENTION OF THE MECHANICAL CONTRACTOR, WHOSE DECISION SHALL BE FINAL. THE LOCATIONS OF ALL ITEMS SHOWN ON THE DRAWINGS OR CALLED FOR IN THE SPECIFICATIONS THAT ARE NOT DEFINITELY FIXED BY DIMENSIONS ARE APPROXIMATE ONLY. THE EXACT LOCATIONS NECESSARY TO SECURE THE BEST CONDITIONS AND RESULTS MUST BE DETERMINED BY THE PROJECT SITE CONDITIONS AND SHALL HAVE THE APPROVAL OF THE ENGINEER BEFORE BEING INSTALLED. DO NOT SCALE DRAWINGS. ALL MISCELLANEOUS STEEL REQUIRED TO ENSURE PROPER INSTALLATION AND AS SHOWN IN DETAILS FOR PIPING, DUCTWORK AND EQUIPMENT (UNLESS OTHERWISE NOTED) SHALL BE FURNISHED AND INSTALLED BY THE MECHANICAL CONTRACTOR. 17. PROVIDE ACCESS PANELS FOR INSTALLATION IN WALLS AND CEILINGS, WHERE REQUIRED TO SERVICE DAMPERS, VALVES, SMOKE DETECTORS AND OTHER CONCEALED MECHANICAL EQUIPMENT. ACCESS PANELS SHALL BE TURNED OVER TO THE GENERAL CONTRACTOR FOR INSTALLATION. 18. ALL EQUIPMENT, PIPING, DUCTWORK, ETC. SHALL BE SUPPORTED AS DETAILED, SPECIFIED AND REQUIRED TO PROVIDE A VIBRATION-FREE INSTALLATION. 19. C. UNLESS OTHERWISE NOTED, ALL TEMPERATURE CONTROL DEVICES, INSTALLED PILOT DEVICES, AND ALL ASSOCIATED PILOT CONTROL EQUIPMENT, FOR ALL EQUIPMENT PROVIDED UNDER DIVISION 23, SHALL BE FURNISHED AND INSTALLED UNDER DIVISION 23. 7. PROVIDE ACCESS DOORS IN DUCTWORK FOR THE OPERATION, ADJUSTMENT, AND MAINTENANCE OF ALL FANS, VALVES, AND MECHANICAL EQUIPMENT. 8. SEE SPECIFICATIONS FOR DUCTWORK GAUGES, BRACING, HANGERS, AND OTHER REQUIREMENTS. 9. RUNS OF FLEXIBLE DUCT SHALL NOT EXCEED 5 FEET. 10. LOCATE ALL MECHANICAL EQUIPMENT (SINGLE DUCT, DUAL DUCT, VARIABLE VOLUME, CONSTANT VOLUME AND FAN POWERED BOXES, FAN COIL UNITS, CABINET HEATERS, UNIT HEATERS, UNIT VENTILATORS, COILS, STEAM HUMIDIFIERS, ETC.) FOR UNOBSTRUCTED ACCESS TO UNIT ACCESS PANELS, CONTROLS, AND VALVES. WHERE TWO OR MORE ITEMS OF THE SAME TYPE OF EQUIPMENT ARE REQUIRED, THE PRODUCT OF ONE MANUFACTURER SHALL BE USED. REFRIGERANT SUCTION OUTSIDE AIR DUCT TOWARD VIEWER ACCU ACU AHU COND CRAC DC DDB DOAS DWH EF ERU ERV EVAP EWH F FCU GRV IH MAU MCC SA SF SSACU SSCU UH UV VFD VRF PROJECT GENERAL NOTES GENERAL REQUIREMENTS A. DIVISION 23 CONTRACTOR SHALL PROVIDE MECHANICAL EQUIPMENT WITH VOLTAGES AND OTHER ELECTRICAL CHARACTERISTICS AS INDICATED ON THE DRAWINGS AND WITHIN THE SPECIFICATIONS. SUPPLY DIFFUSER - 4-WAY BLOW D TAB TEMP TH TONS TOT TRANS T'STAT TSP TV TYP TS NOT APPLICABLE NORMALLY CLOSED OR NOISE CRITERIA NOT IN CONTRACT NUMBER NOT TO SCALE OUTSIDE AIR OUTSIDE DIAMETER OPERATED OPENING THERMOSTAT CLEAN OUT SM N/A NC NIC NO NTS T 200 CO ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT HVAC SYMBOLS ALL DUCTWORK, PIPING AND EQUIPMENT SUPPORTED FROM STRUCTURAL STEEL SHALL BE COORDINATED WITH THE GENERAL CONTRACTOR. ALL ATTACHMENTS TO STEEL BAR JOISTS, TRUSSES, OR JOISTS GIRDERS SHALL BE AT PANEL POINTS. PROVIDE BEAM CLAMPS MEETING MSS STANDARDS. WELDING TO STRUCTURAL MEMBERS SHALL NOT BE PERMITTED. THE USE OF C-CLAMPS SHALL NOT BE PERMITTED. 20. MECHANICAL EQUIPMENT, DUCTWORK, AND PIPING SHALL NOT SUPPORTED FROM A METAL DECK. 21. ALL ROOF-MOUNTED EQUIPMENT CURBS FOR EQUIPMENT PROVIDED BY THE MECHANICAL CONTRACTOR SHALL BE FURNISHED BY THE MECHANICAL CONTRACTOR AND INSTALLED BY THE GENERAL CONTRACTOR. 22. LOCATIONS AND SIZES OF FLOOR, WALL AND ROOF OPENINGS SHALL BE COORDINATED WITH ALL OTHER TRADES INVOLVED. 23. ALL OPENINGS IN FIRE AND/OR SMOKE RATED CONSTRUCTION DUE TO DUCTWORK, PIPING, CONDUIT, ETC. SHALL BE FIRE STOPPED WITH AN APPROVED LISTED AND LABELED FIRE STOPPING MATERIAL. 24. ALL AIR CONDITIONING CONDENSATE DRAIN LINES FROM EACH AIR HANDLING UNIT AND ROOFTOP UNIT SHALL BE PIPED FULL SIZE OF THE UNIT DRAIN OUTLET WITH A “P” TRAP AND PIPED TO THE NEAREST DRAIN. SEE THE DETAILS SHOWN ON THE DRAWINGS OR THE CONTRACT SPECIFICATIONS FOR THE DEPTH OF THE AIR CONDITIONING CONDENSATE TRAP. 25. CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING EQUIPMENT AND UTILITIES BEFORE COMMENCING WORK. 11. ALL AIR HANDING UNITS SHALL OPERATE WITHOUT MOISTURE CARRYOVER. CALDWELL CROSSING GROUND UP 12198 University City Boulevard Harrisburg, NC 28075 ARCHITECT LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 MEP LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 STRUCTURAL LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 12. PROVIDE FLEXIBLE CONNECTIONS IN ALL DUCTWORK SYSTEMS (SUPPLY, RETURN, AND EXHAUST) CONNECTED TO AIR HANDLING UNITS, FANS, AND OTHER EQUIPMENT THAT REQUIRE VIBRATION ISOLATION. FLEXIBLE CONNECTIONS SHALL BE PROVIDED AT THE POINT OF CONNECTION TO THE EQUIPMENT UNLESS OTHERWISE INDICATED. 13. ALL DUCTS SHALL BE GROUNDED ACROSS FLEXIBLE CONNECTIONS WITH FLEXIBLE COPPER GROUNDING STRAPS. GROUNDING STRAPS SHALL BE BOLTED OR SOLDERED TO BOTH THE EQUIPMENT AND THE DUCT. 14. COORDINATE DIFFUSERS, REGISTER AND GRILLE LOCATIONS WITH ARCHITECTURAL REFLECTED CEILING PLANS, LIGHTING AND OTHER CEILING ITEMS AND MAKE MINOR DUCT MODIFICATIONS TO SUIT. 15. UNLESS OTHERWISE SHOWN, LOCATE ALL ROOM THERMOSTATS AND HUMIDISTATS 42” (CENTERLINE) ABOVE THE FINISHED FLOOR. NOTIFY THE PROFESSIONAL OF ANY ROOMS WHERE THE PRECEDING LOCATION CANNOT BE MAINTAINED OR WHERE THERE IS A QUESTION ON LOCATION. 16. EXTERIOR LOUVERS ARE INDICATED FOR INFORMATION ONLY. LOUVER SIZES, LOCATIONS, AND DETAILS SHALL BE COORDINATED WITH THE GENERAL CONTRACTOR. HVAC PIPING GENERAL NOTES 1. ALL PIPING WORK SHALL BE COORDINATED WITH ALL TRADES INVOLVED. OFFSETS IN PIPING AROUND OBSTRUCTIONS SHALL BE PROVIDED AT NO ADDITIONAL COST TO THE OWNER. 2. UNLESS OTHERWISE NOTED, ALL PIPING IS OVERHEAD, TIGHT TO THE UNDERSIDE OF THE STRUCTURE OR SLAB, WITH SPACE FOR INSULATION IF REQUIRED. 3. INSTALL PIPING SO ALL VALVES, STRAINERS, UNIONS, TRAPS, FLANGES, AND OTHER APPURTENANCES REQUIRING ACCESS ARE ACCESSIBLE. 4. ALL VALVES SHALL BE INSTALLED SO THAT THE VALVE REMAINS IN SERVICE WHEN EQUIPMENT OR PIPING ON THE EQUIPMENT SIDE OF THE VALVE IS REMOVED. 5. INSTALL ALL PIPING WITHOUT FORCING OR SPRINGING. 6. ALL VALVES SHALL BE ADJUSTED FOR SMOOTH AND EASY OPERATION. 7. PROVIDE FLEXIBLE CONNECTIONS IN ALL PIPING SYSTEMS CONNECTED TO EQUIPMENT WHICH REQUIRES VIBRATION ISOLATION EXCEPT WATER COILS. FLEXIBLE CONNECTIONS SHALL BE PROVIDED AS CLOSE TO THE EQUIPMENT AS POSSIBLE OR AS INDICATED ON THE DRAWINGS. 8. SLOPE REFRIGERANT PIPING ONE PERCENT IN THE DIRECTION OF OIL RETURN. LIQUID LINES MAY BE INSTALLED LEVEL. 9. INSTALL HORIZONTAL REFRIGERANT HOT GAS DISCHARGE PIPING WITH 1/2 INCH PER 10 FEET DOWNWARD SLOPE AWAY FROM THE COMPRESSOR. 10. INSTALL HORIZONTAL REFRIGERANT SUCTION LINES WITH 1/2 INCH PER 10 FEET DOWNWARD SLOPE TO THE COMPRESSOR, WITH NO LONG TRAPS OR DEAD ENDS THAT MAY CAUSE OIL TO SEPARATE FROM THE SUCTION GAS AND RETURN TO THE COMPRESSOR IN DAMAGING SLUGS. Date 11.01.2016 11.30.2016 Description 80% OWNER REVIEW CONSTRUCTION DOCUMENTS PERMIT, FEES, CODES, ORDINANCES AND REGULATIONS 1. OBTAIN AND PAY FOR ALL PERMITS, INSPECTIONS AND CONNECTION FEES REQUIRED BY GOVERNING BODIES IN CONNECTION WITH THE WORK, INCLUDING TEMPORARY UTILITY CHARGES (ELECTRICAL, WATER AND SEWER). DELIVER CERTIFICATES OF INSPECTION TO THE ENGINEER OR THE OWNER'S AGENT BEFORE FINAL PAYMENT. 2. ALL WORK SHALL COMPLY WITH GOVERNING CODES, ORDINANCES AND REGULATIONS OF CITY, COUNTY AND STATE HAVING JURISDICTION. 3. APPLICABLE CODES INCLUDE BUT ARE NOT LIMITED TO THE FOLLOWING: a. 2012 STATE OF NORTH CAROLINA MECHANICAL CODE, WITH LATEST AMENDMENTS. b. 2012 STATE OF NORTH CAROLINA BUILDING CODE, WITH LATEST AMENDMENTS. c. 2012 STATE OF NORTH CAROLINA PLUMBING CODE WITH LATEST AMENDMENTS. d. 2012 STATE OF NORTH CAROLINA ENERGY CODE WITH LATEST AMENDMENTS. e. 2012 NFPA STANDARD 70 - NATIONAL ELECTRICAL CODE. f. ANSI: AMERICAN NATIONAL STANDARDS INSTITUTE. g. ASHRAE: AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR CONDITIONING ENGINEERS. h. ASME: AMERICAN SOCIETY OF MECHANICAL ENGINEERS. i. ASTM: AMERICAN SOCIETY FOR TESTING AND MATERIALS. j. NEMA: NATIONAL ELECTRICAL MANUFACTURER'S ASSOCIATION. k. NFPA: NATIONAL FIRE PROTECTION ASSOCIATION. l. OSHA: OCCUPATIONAL SAFETY AND HEALTH ACT. m. SMACNA: SHEET METAL AND AIR CONDITIONING CONTRACTORS NATIONAL ASSOCIATION n. UL: UNDERWRITERS' LABORATORIES, INC. o. NATIONAL, STATE AND LOCAL CODES OF ALL AUTHORITIES HAVING JURISDICTION. p. RULES AND REGULATIONS OF THE TOWN OF HARRISBURG, CABARRUS COUNTY, AND THE STATE OF NORTH CAROLINA. q. LOCAL UTILITY AUTHORITIES. r. OTHER CODES AND STANDARDS AS REFERENCED, HEREIN. Seal / Signature Project Name CALDWELL CROSSING GROUND UP Project Number 123.6341.00 Scale N.T.S. Description MECHANICAL SYMBOLS, ABBREVIATIONS AND NOTES M00.01

SHEET NOTES 1 PROVIDE UNIT CONTROLLER WITH AVERAGING SENSORS. CALDWELL CROSSING GROUND UP 12198 University City Boulevard Harrisburg, NC 28075 ARCHITECT LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 A A.2 B C C.1 D E MEP LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 F STRUCTURAL LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 6" CONCRETE PAD BY HC. REQUIRED SERVICE CLEARANCE HVAC 123 SSRCU-1 VRFS-1 1 E1 75 12/8 12/8 MEN'S RESTROOM 112 S1 8ø R1 60 L1 125 180 180 OFFICE 116 R2 R2 75 R1 180 12/8 180 10/4 12/6 10/6 S2 OFFICE 115 50 75 S1 1 SSACU-2 8ø S2 TS S1 50 RESTROOM VESTIBULE 110 SAFE DEPOSIT 113 12/8 PERCH 114 S1 2 60 125 10/6 10/8 T WOMEN'S RESTROOM 111 10/8 L1 12/8 75 E1 1 12/8 12/8 10/6 26/8 SSACU-1 GENERAL NOTES SSACU-3 10/4 Date 11.01.2016 11.30.2016 01.19.2017 02.01.2017 03.10.2017 S2 2.2 JANITOR CLOSET 109 T E1 2.3 4ø UP TO GRV-2 8ø 240 8/6 UP TO GRV-1 8ø T 6ø ERV-1 8ø 240 S2 8ø 10/10 175 80% OWNER REVIEW CONSTRUCTION DOCUMENTS MODIFICATION #1 BID MODIFICATION #2 - DD3 OFFICE 117 TS 50 T 6ø S2 TS 6ø 175 180 4ø 8ø T S2 SSACU-8 175 BC-1 12/10 TEMPERATURE SENSOR IN RETURN DUCTWORK 2.9 12/10 SSACU-4 16/10 8ø 42/8 R2 R6 900 220 42/8 TS 700 42/8 L1 R1 T 180 PRINT ROOM 120 10/6 14/12 I.T. / ELEC 107 L1 8ø SSACU-9 14/4 SA DUCTS TO BE HELD TIGHT TO BTM OF STEEL BEAM AND RISE UP AT ANGLE TO REMAIN ABOVE CEILING AND FRAMING OF MARKETING WINDOW. TYPICAL 3. R3 450 450 300 8ø 14/4 14/4 14/4 14/12 5 S4 SSACU-5 L1 S1 CONFERENCE ROOM 122 125 125 Seal / Signature 6ø 300 SSACU-10 TELLER CONNECT / ATM VESTIBULE 101 10/14 T L1 10/6 8ø CASH ROOM 105 SSACU-6 180 S2 220 TS 20/8 8ø OFFICE 119 R5 T T 3 200 6ø S2 S2 OFFICE 118 12/10 2.8 ON-UP ZONE 103 8ø 4ø LOBBY 102 E2 8ø 200 10/10 8ø 10/10 12/6 SSACU-7 12/10 R2 8ø TELLER 104 12/10 8ø 8/6 BREAKROOM 108 12/10 175 4ø 4 8ø R2 12/10 Description WORK ROOM 121 S1 R1 75 75 12ø DISPLAY WINDOW 106 L1 L1 L1 180 180 180 Project Name CALDWELL CROSSING GROUND UP Project Number 123.6341.00 Scale 1 M02.01 As Indicated FLOOR PLAN - DUCTWORK 1/4" 1'-0" Description FLOOR PLAN - DUCTWORK Drawing North M02.01

CALDWELL CROSSING GROUND UP 12198 University City Boulevard Harrisburg, NC 28075 ARCHITECT LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 MEP LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 STRUCTURAL LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 3" VENT Date 11.01.2016 11.30.2016 GRV-1 Description 80% OWNER REVIEW CONSTRUCTION DOCUMENTS RD RD GRV-2 RD RD Seal / Signature Project Name CALDWELL CROSSING GROUND UP Project Number 123.6341.00 Scale As Indicated Description ROOF PLAN - MECHANICAL 01 ROOF PLAN - MECHANICAL SCALE: 1/4" 1'-0" Drawing North M02-02

CALDWELL CROSSING GROUND UP 12198 University City Boulevard Harrisburg, NC 28075 ARCHITECT LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 A A.2 B C C.1 D E MEP LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 F STRUCTURAL LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 6" CONCRETE PAD BY HC. REQUIRED SERVICE CLEARANCE HVAC 123 SSRCU-1 VRFS-1 REFRIGERANT PIPING LINE SETS DOWN IN CHASE AND OUT TO MECHANICAL EQUIPMENT 1 REFRIGERANT LIQUID AND SUCTION LINE SET BETWEEN INDOOR AND OUTDOOR UNITS. SIZE PER MANUFACTURERS RECOMMENDATIONS. REFER TO SCHEMATIC DIAGRAM FOR SIZING AND ADDITIONAL DETAILS WOMEN'S RESTROOM 111 PERCH 114 MEN'S RESTROOM 112 SAFE DEPOSIT 113 OFFICE 115 SSACU-2 OFFICE 116 2 RESTROOM VESTIBULE 110 Date SSACU-3 11.01.2016 11.30.2016 SSACU-1 CONDENSATE PIPE DOWN TO JANITOR'S SINK. REFER TO DETAIL Description 80% OWNER REVIEW CONSTRUCTION DOCUMENTS CO OFFICE 117 2.2 JANITOR CLOSET 109 2.3 CO BREAKROOM 108 TELLER 104 1 1/4" CONDENSATE DRAIN LINE (TYPICAL) 1 1/4" CONDENSATE DRAIN LINE (TYPICAL) LOBBY 102 ON-UP ZONE 103 OFFICE 118 SSACU-7 2.8 SSACU-8 2.9 EACH LINE REPRESENTS LIQUID AND SUCTION LINE SET. SIZE PER MANUFACTURERS RECOMMENDATIONS. REFER TO SCHEMATIC DIAGRAM FOR SIZING AND ADDITIONAL DETAILS BC-1 OFFICE 119 SSACU-4 3 SSACU-6 4 SSACU-10 SSACU-9 CO I.T. / ELEC 107 CASH ROOM 105 TELLER CONNECT / ATM VESTIBULE 101 PRINT ROOM 120 SSACU-5 CONFERENCE ROOM 122 Seal / Signature WORK ROOM 121 5 DISPLAY WINDOW 106 Project Name CALDWELL CROSSING GROUND UP Project Number 123.6341.00 Scale As Indicated Description SHTNAME 01 FLOOR PLAN - MECHANICAL PIPING SCALE: 1/4" 1'-0" Drawing North M03-01

CALDWELL CROSSING GROUND UP 12198 University City Boulevard Harrisburg, NC 28075 ARCHITECT LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 MEP LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 STRUCTURAL LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 Additional refrigerant charge is needed depending on the size and length of extended piping. Please refer the amount of pre-charge and the formula of calculation which is mentioned on the data book. 2 2 2 2 2 1.25mm(16 AWG) : 1.25mm(16 AWG) or more. 0.75mm(20 AWG) : between 0.5mm(24 AWG) and 0.75mm(20 AWG). CITY MULTI DIAGRAM SYMBOL LEGEND DISPLAY DESCRIPTION POWER WIRE CONTROL WIRE REF. PIPE CONT.No SYSTEM SCHEMATIC DWG. PAGE 3 208-230V/60Hz System 1 FUSE 1 208-230V/60Hz PURYP192TSLMU-A 16-2 AWG(S) 3 208-230V/60Hz PIPING LIST SYMBOL BRANCH PIPE MODEL NAME J1 Reducer SYMBOL LIQUID PIPE/GAS PIPE SIZE P1 1/4 / 1/2 P2 3/8 / 5/8 P3 7/8 / P4 / 1-1/8 P5 3/4 / P6 / 7/8 System 2 FUSE L1L2L3 TB7 L1L2L3 TB7 PURY-P96TLMU-A PURY-P96TLMU-A 051 P0 G TB3 (S) PUYA30NHA6 FUSE DIP SWITCH 3-7 OFF N/A 052 TB3 P6 00 G E P5 P5 16-2 AWG(S) P4 P3 Date 11.01.2016 11.30.2016 CMB-P1010NU-HA1 16-2 AWG(S) TB2 053 3 4 5 J1 J1 208-230V 208-230V FUSE FUSE 6 7 8 9 J1 J1 J1 J1 P1 P1 P2 P2 P1 P1 P2 P1 208-230V 208-230V 208-230V 208-230V 208-230V 208-230V 208-230V 208-230V FUSE G L1L2 001 TB5 TB1 5 PEFYP08NMAU-E3 FUSE G L1L2 Gp1 80% OWNER REVIEW CONSTRUCTION DOCUMENTS G TB1 1 2 2c or e Description 002 T B 5 TB1 5 G L1L2 Gp2 FUSE 003 T B 5 TB1 5 G L1L2 Gp3 FUSE 004 T B 5 TB1 5 G L1L2 Gp4 FUSE 005 T B 5 T B1 5 G L1L2 Gp5 FUSE 006 T B 5 T B1 5 G L1L2 Gp6 FUSE 007 T B 5 T B1 5 P2 Gp7 FUSE G L1L2 P2 008 T B 5 T B1 5 G L1L2 Gp8 009 TB 5 T B1 5 TB4 Gp9 G Gp10 TB5 PLFYP08NCMU-ER4 PEFYP30NMAU-E3 PEFYP24NMAU-E3 PLFYP08NCMU-ER4 PLFYP08NCMU-ER4 PEFYP36NMAU-E3 PEFYP12NMAU-E3 PEFYP36NMAU-E3 PKAA30KA6.TH 28 16-2 AWG(S) 28 16-2 AWG(S) 28 16-2 AWG(S) 28 16-2 AWG(S) 28 16-2 AWG(S) 28 16-2 AWG(S) 28 16-2 AWG(S) 28 16-2 AWG(S) 28 16-2 AWG(S) 16-2 AWG(S) AE-200A-A TB1 M-Net TB3 LAN 28 16-2 AWG(S) 1 F 100 240V CR CR CR CR CR CR CR CR CR CR SSACU-1 SSACU-7 SSACU-6 SSACU-5 SSACU-9 SSACU-8 SSACU-4 SSACU-2 SSACU-3 SSACU-10 Seal / Signature Project Name CALDWELL CROSSING GROUND UP Project Number 123.6341.00 Scale As Indicated Description VRF & DUCTLESS SPLIT SYSTEM SCHEMATIC DESIGN 01 VRF & DUCTLESS SPLIT SYSTEM SCHEMATIC DESIGN SCALE: NTS M04-01

SE8600U0B11 WM0x-0 TOUCH SCREEN THERMOSTAT SC01-10x TO MITSUBISHI VRF AHU THERMOSTAT INTERFACE OR HVAC EQPT THERMOSTAT TERMINAL STRIP 4.5" WATER CONSUMPTION MONITORING PANEL OCCUPANCY CONTROL SIGNAL DRY CONTACT 28VAC-1Amp MAX PLUG-IN TRANSFORMER CALDWELL CROSSING GROUND UP 12198 University City Boulevard Harrisburg, NC 28075 MULTI JET WATER METER WITH PULSED OUTPUT (BY OTHERS) SE3010W1045 ARCHITECT LITTLE 5815 Westpark Drive Charlotte, NC 28217 Tel 704.525.6350 BUILDING WATER AND IRRIGATION FLOW METER ML01 OP 1A OP 1B OP 2A OP 2B 15V DC AO1 GND A02 GND AO3 GND AO4 ADDITIONAL AVERAGING TEMPERATURE SENSORS AS REQUIRED MPM INTERNAL LAN/NETWORK SWITCH LOSSNAY CONTROL AND MONITORING PANEL AD

hvac piping abbreviations hvac piping symbols hvac symbols hvac electrical symbols sheet metal general notes hvac piping general notes project general notes all starters, disconnect switches, motor control centers, and variable frequency drives, for equipment provided under division 23, shall be furnished under