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City of Everett Permit Services MECHANICAL HVAC LEGEND
<br /> EVERETT Reviewed for Permit 03/05/2025
<br /> GENERAL GENERAL GENERAL SUGGESTED ABBREVIATIONS SUGGESTED ABBREVIATIONS SUGGESTED ABBREVIATIONS
<br /> SYMBOL DESCRIPTION SYMBOL DESCRIPTION SYMBOL DESCRIPTION ABBREVIATION DESCRIPTION ABBREVIATION DESCRIPTION ABBREVIATION DESCRIPTION
<br /> 24 12 RECTANGULAR DUCT, FIRST NUMBER 1�� RECTANGULAR DUCT, SQUARE ELBOW R
<br /> 24 12 INDICATES SIZE FOR SIDE SHOWN WITH TURNING VANES ❑ THERMOSTAT, REMOTE, CEILING A ANCHOR HC HEATING COIL T TANK
<br /> AAV AUTOMATIC AIR VENT HD HEAD — FEET OF WATER TDH TOTAL DYNAMIC HEAD (FEET OF WATER)
<br /> 24/12 z ACFM ACTUAL CUBIC FEET PER MINUTE HORIZ HORIZONTAL TEMP TEMPERATURE
<br /> II�`�II DUCT SHOWN IN SECTION, ARROW \ RECTANGULAR DUCT, RADIUS VANED ELBOW QH HUMIDISTAT, WALL AD ACCESS DOOR HP HORSEPOWER TH TOTAL HEAD (FEET OF WATER)
<br /> POINTS TO SIDE CALLED OUT FIRST ADD ANGULAR DOWN DISCHARGE HPC HIGH PRESSURE CONDENSATE THC TOTAL HEAT CAPICITY
<br /> AF AIR FOIL WHEEL HR HOUR THD TOP HORIZONTAL DISCHARGE
<br /> 240 ROUND DUCT, NUMBER INDICATES AFF ABOVE FINISHED FLOOR HVAC HEATING, VENTILATING AND AIR CONDITIONING THIRD THREADED
<br /> 240 DIAMETER EXTRACTION GRID ❑H HUMIDISTAT CEILING AP ACCESS PANEL HPU HEAT PUMP UNIT TOD TOP OF DUCT
<br /> 1—� APPROX APPROXIMATELY HTG HEATING TOS TOP OF STEEL
<br /> ARCH ARCHITECTURAL HX HEAT EXCHANGER TOP TOP OF PIPE
<br /> 24 12m OVAL DUCT, FIRST NUMBER INDICATES _ H FLEXIBLE DUCT 4D DUCT TYPE SMOKE DETECTOR AUD ANGULAR UP DISCHARGE IC INSULATED, COLD PIPE TP TOTAL PRESSURE
<br /> MAJOR DIAMETER, SECOND NUMBER AVG AVERAGE ID INSIDE DIAMETER TS TEMPERATURE SWITCH
<br /> 24 0 INDICATES MINOR DIAMETER
<br /> MTdE MTG INVERT ELEVATION TSP TOTAL STATIC PRESSURE
<br /> B BLOWER IH INSULATED, HOT PIPE TV TURNING VANE
<br /> SUPPLY AIR DUCT, SQUARE OR FLEXIBLE DUCT CONNECTION H DUCT TYPE HEAT DETECTOR BI BACKWARD INCLINED WHEEL IGV INLET GUIDE VANE TYP TYPICAL
<br /> RECTANGULAR ELBOW FACING TOWARDS 4 D BDD BACK DRAFT DAMPER INSUL INSULATION
<br /> 10 I BFP BACKFLOW PREVENTER IN INCHES UBD UP BLAST DISCHARGE
<br /> SQUARE OR SUPPLY AIR DUCT, SIDEWALL SUPPLY AIR DIFFUSER, BHD BOTTOM HORIZONTAL DISCHARGE KW KILOWATT VAV VARIABLE AIR VOLUME
<br /> I�= BHP BRAKE HORSE POWER GRILLE OR REGISTER AND CFM STATIC PRESSURE REGULATOR KVA KILOVOLT-AMPERE VD VOLUME DAMPER
<br /> RECTANGULAR ELBOW FACING AWAY 100 CFM AIR FLOW BLDG BUILDING VP VELOCITY PRESSURE
<br /> BOD BOTTOM OF DUCT LAT LEAVING AIR TEMPERATURE ('F) VERT VERTICAL
<br /> EXHAUST, RETURN OR SUPPLY AIR DUCT T H BOP BOTTOM OF PIPE LBS, # POUNDS VTA VENT TO ATMOSPHERE
<br /> t r SIDEWALL RETURN/EXHAUST AIR GRILLE TEMPERATURE SENSOR, HUMIDITY BOS BOTTOM OF STEEL LWT LEAVING WATER TEMPERATURE ('F) VTR VENT THROUGH ROOF
<br /> ROUND, ELBOW FACING TOWARDS 100 CFM OR REGISTER AND AIR FLOW SENSOR, DUCT MOUNTED BSP BLACK STEEL PIPE
<br /> BTU BRITISH THERMAL UNIT MA MIXED AIR WB WET BULB TEMPERATURE
<br /> EXHAUST, RETURN OR SUPPLY AIR DUCT BTUH BRITISH THERMAL UNIT PER HOUR MAX MAXIMUM WG WATER GAUGE (INCHES OF WATER)
<br /> CF SCREENED OPENING AND CFM AIR FLOW � THERMOSTAT, WALL BW BUTTWELD MBH HEAT CAPACITY BTU PER HOUR X 1000 W/ WITH
<br /> ROUND, ELBOW FACING AWAY 10o CFM MCC MOTOR CONTROL CENTER WCO WALL CLEAN OUT
<br /> MECH MECHANICAL WHA WATER HAMMER ARRESTOR
<br /> EXHAUST AIR OR RETURN AIR DUCT, SUPPLY OUTLET, CEILING TYPE, DIFFUSER Cv FLOW OCOEFFICIENT MIN MINIMUM
<br /> SQUARE OR RECTANGULAR, ELBOW y OR GRILLE, SQUARE OR RECTANGULAR AND 0 NIGHT THERMOSTAT C TEMPERATURE - DEGREES CELSIUS MOV MOTOR OPERATED VALVE
<br /> FACING TOWARDS CFM AIR FLOW(SEE NOTE 4) N CAP CAPACITY MOUNTED, MOUNTING
<br /> EXHAUST AIR OR RETURN AIR DUCT,
<br /> cc COOLING COIL Mx MIXER GENERAL NOTES:
<br /> SQUARE OR RECTANGULAR, ELBOW 1� / SUPPLY OUTLET, CEILING TYPE, ROUND THERMOSTAT, CEILING CCW COUNTER CLOCKWISE ROTATION NC NORMALLY CLOSED
<br /> CFM CUBIC FEET PER MINUTE AND CFM AIR FLOW (SEE NOTE 4) ❑
<br /> FACING AWAY CI CAST IRON NIC NOT IN CONTRACT 1. e DESIGNATES EQUIPMENT APPEARING ON MECHANICAL
<br /> CENTER LINE NO NORMALLY OPEN / NUMBER EQUIPMENT SCHEDULES.
<br /> TRANSITION RECTANGULAR TO LINEAR DIFFUSER AND CFM AIR FLOW NTS NOT TO SCALE
<br /> ® EllTEMPERATURE TRANSMITTER COND CONDENSATE NPSH NET POSITIVE SUCTION HEAD
<br /> RECTANGULAR (SEE NOTE 4) CONN CONNECTION 2. SEE DRAWINGS M1b AND M1c FOR ADDITIONAL MECHANICAL
<br /> CONT CONTINUED/CONTINUATION CA OUTSIDE AIR LEGENDS AND ABBREVIATIONS.
<br /> RETURN EXHAUST REGISTER OR GRILLE, CPLG COUPLING OBD OPPOSED BLADE DAMPER
<br /> TRANSITION AT TAKE OFF /I�-"r / PT PRESSURE TRANSMITTER CS CARBON STEEL OF OVERFLOW 3. SEE CONTROL SCHEMATICS) FOR ADDITIONAL
<br /> �J CEILING DUCT TYPE AND CFM AIR FLOW CW CLOCKWISE ROTATION OS&Y OUTSIDE SCREW AND YOKE ABBREVIATIONS AND SYMBOLS RELATING TO CONTROL
<br /> OD OUTSIDE DIAMETER SYSTEMS.
<br /> TRANSITION SQUARE OR RECTANGULAR RETURN RELIEF GRILLE, CEILING TYPE, DA DIRECT ACTING OVHD OVERHEAD
<br /> TO ROUND OR OVAL z— NON-DUCTED DB DRY BULB TEMPERATURE 4. DIFFUSER SYMBOLS WITHOUT AIR FLOW DIRECTION ARROWS
<br /> DBD DOWN BLAST DISCHARGE P PUMP INDICATE AIR FLOW IN ALL DIRECTIONS (TWO DIRECTIONS
<br /> UP / DIA 0 DIAMETER PBD PARALLEL BLADE DAMPER FOR LINEAR DIFFUSERS). AIR FLOW ARROWS ARE USED
<br /> DUCT OFFSET UP OR DOWN �� UNIT HEATER, HORIZONTAL VAV BOX LEGEND DIS DEIONIZED WATER SUPPLY PD/oP PRESSURE DROP OR DIFFERENTIAL PRESSURE TO INDICATE DESIRED AIR FLOW DIRECTIONS IN OTHER
<br /> FFFF��--DOWN—���� "`LLLJJJ` DIR DEIONIZED WATER RETURN PDI PLBG. & DRAINAGE INSTITUTE CASES.
<br /> DN DOWN POC POINT OF CONNECTION� DS DOWNSPOUT POS POSITION 5. SOME ABBREVIATIONS AND SYMBOLS INCLUDED IN THIS
<br /> R
<br /> OPPOSED BLADE DAMPER O UNIT HEATER, VERTICAL PROJECTION DWG DRAWING PRESS PRESSURE LEGEND MAY NOT BE FOUND ON ANY DRAWINGS. THEY
<br /> dB DECIBELS PRV PRESSURE REGULATING VALVE ARE INCLUDED HERE AS PART OF A STANDARD LEGEND
<br /> PS PRESSURE SWITCH AND MAY BE UTILIZED IN THE FUTURE.
<br /> 1ST CHARACTER: 2ND CHARACTER: EA EXHAUST AIR EACH PSIG PRESSURE - POUNDS PER SQUARE INCH, GAUGE
<br /> PARALLEL BLADE DAMPER LINED DUCT V= VARIABLE AIR VOLUME F= FAN POWERED UNIT EAT ENTER AIR TEMPERATURE ('F) PSV PRESSURE RELIEF (SAFETY) VALVE
<br /> TERMINAL UNIT C= SHUTOFF UNIT EFF EFFICIENCY PVC POLYVINYL CHLORIDE PIPE
<br /> ELL ELOW
<br /> VOLUME DAMPER SOUND ATTENUATOR 3RD CHARACTER: ELEC ELECTRICAL RA REVERSE ACTING (CONTROLLER) / RETURN AIR
<br /> XX E= ELECTRIC HEAT ELEV, EL ELEVATION RECT RECTANGULAR
<br /> X W= HOT WATER HEAT ESP EXTERNAL STATIC PRESSURE REF REFERENCE
<br /> { C= NO HEAT COIL EVAP EVAPORATOR REV REVISED
<br /> ❑
<br /> DUCT DAMPER, MOTOR OPERATED El LINED DUCT WITH ACCESS DOOR EWT ENTERING WATER TEMPERATURE RH RELATIVE HUMIDITY
<br /> M (ELECTRIC OR PNEUMATIC) AD SD AND SMOKE DAMPER MARK NUMBER EXH EXHAUST RM ROOM
<br /> EXIST EXISTING ROT ROTATION
<br /> EXT EXTERIOR / EXTERNAL RPM REVOLUTIONS PER MINUTE
<br /> BACK DRAFT DAMPER (ALLOWS LINED DUCT WITH AXIAL FLOW FAN RQD REQUIRED
<br /> BDD FLOW IN DIRECTION OF ARROW) 'F TEMPERATURE - DEGREES FAHRENHEIT RTN RETURN
<br /> FC FAIL CLOSED RV ROOF VENT
<br /> �ADOR AP FC FORWARD CURVE WHEEL
<br /> ACCESS DOOR (AD) OR CENTRIFUGAL FAN FD FIRE DAMPER Q FLOW RATE
<br /> 0 ACCESS PANEL (AP) FLR FLOOR
<br /> FD FL FAIL LAST SA SUPPLY AIR
<br /> FIRE DAMPER (1 HOUR) CENTRIFUGAL FAN, INLET GUIDE VANES FLT FILTER SCFH STANDARD CUBIC FEET/HR
<br /> FCO FLOOR CLEAN OUT SCFM STANDARD CUBC FEET/MIN
<br /> FO FAIL OPEN SHC SENSIBLE HEAT CAPACITY
<br /> FD2 n FOB FLAT ON BOTTOM SHF SENSIBLE HEAT FACTOR
<br /> FIRE DAMPER (2 HOUR) -y( EXHAUST FAN FOF FACE OF FLANGE SHT SHEET
<br /> u V FDIC FURNISHED BY OWNER, INSTALLED BY CONTRACTOR SO SCREENED OPENING
<br /> FOT FLAT ON TOP SOV SOLENOID OPERATED VALVE
<br /> FPM FEET PER MINUTE SP STATIC PRESSURE
<br /> SUPPLY AIR FLOW DIRECTION FS FLOW SWITCH SQ SQUARE
<br /> FT FEET SS STAINLESS STEEL
<br /> FV FACE VELOCITY FPM STL STEEL
<br /> __Nr RETURN, OUTSIDE OR EXHAUST AIR STRUC STRUCTURAL
<br /> FLOW DIRECTION GAL GALLONS SW SOCKET WELD
<br /> GPM GALLONS PER MINUTE SUCT SUCTION
<br /> GALV GALVANIZED
<br /> GA GAGE, GAUGE
<br /> GSP GALVANIZED STEEL PIPE
<br /> 90% REVIEW Kennedy/Jenks Consultants
<br /> O/1. 1 1 ./1 32001 32nd Avenue South,Suite 101
<br /> L L Federal Way,WA 93007
<br /> Ph.253-835-6400
<br /> Fax 253.952.3435
<br /> SYM RENSION BY APPROVED DATE $YM REVISION BY APPROVED DATE NN P. ACCEPTABILITY B. HOFFER 02.11.25 DRAWN SUBTRLE MECHANICAL HVAC CURRENT C238185 EVISION SYMBOL ORI DATE 02.11.25
<br /> ORIG 100%FINAL DESIGN—ISSUED FOR CONSTRUCTION C236185 KJ JEA 09.25.23 4� �'f" SPECIFICA ONUS APPROVED B.G.DOCKTOR 02.11.25 LEGEND AND ABBREVIATIONS K
<br /> SHEET
<br /> WMAMA "® � APPROVED BY DEPT. DATE V.RANDELOVIC 02.11.25 m� M 1 A
<br /> CHECKED
<br /> o R. RAY 02.11.25
<br /> 42+o9 BUILDING 40-09 JOB NO.
<br /> C238185 COMP NO.
<br /> A'p APPROVED
<br /> �rAL APPROVED MECHANICAL MASTER COL. X-X/X-X EVERETT. WA II No. 40-009-MlA
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