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M EC HAMCAE HVAC LEGEND
<br />LEGEND
<br />GENERAL
<br />SYMBOL
<br />DESCRIPTION
<br />24 12
<br />RECTANGULAR DUCT, FIRST NUMBER
<br />24 12
<br />INDICATES SIZE FOR SIDE SHOWN
<br />24/
<br />DUCT SHOWN IN SECTION, ARROW
<br />POINTS TO SIDE CALLED OUT FIRST
<br />244
<br />ROUND DUCT, NUMBER INDICATES
<br />240
<br />DIAMETER
<br />24/12
<br />OVAL DUCT, FIRST NUMBER INDICATES
<br />24 12
<br />MAJOR DIAMETER, SECOND NUMBER
<br />INDICATES MINOR DIAMETER
<br />SUPPLY AIR DUCT, SQUARE OR
<br />RECTANGULAR ELBOW FACING TOWARDS
<br />i
<br />SUPPLY AIR DUCT, SQUARE OR
<br />RECTANGULAR ELBOW FACING AWAY
<br />EXHAUST, RETURN OR SUPPLY AIR DUCT
<br />ROUND, ELBOW FACING TOWARDS
<br />---
<br />EXHAUST, RETURN OR SUPPLY AIR DUCT
<br />ROUND, ELBOW FACING AWAY
<br />EXHAUST AIR RETURN AIR DUCT,
<br />SQUARE OR RECTANGULAR,
<br />TANGULAR, ELBOW
<br />FACING TOWARDS
<br />EXHAUST AIR OR RETURN AIR DUCT,
<br />I
<br />SQUARE OR RECTANGULAR, ELBOW
<br />FACING AWAY
<br />TRANSITION RECTANGULAR TO
<br />"—I
<br />RECTANGULAR
<br />TRANSITION AT TAKE OFF
<br />TRANSITION SQUARE OR RECTANGULAR
<br />_ _ _
<br />TO ROUND OR OVAL
<br />UP
<br />JUWN
<br />DUCT OFFSET UP OR DOWN
<br />OPPOSED BLADE DAMPER
<br />i
<br />PARALLEL BLADE DAMPER
<br />VOLUME DAMPER
<br />DUCT DAMPER, MOTOR OPERATED
<br />(ELECTRIC OR PNEUMATIC)
<br />r�IBACK
<br />DRAFT DAMPER (ALLOWS
<br />BD
<br />FLOW IN DIRECTION OF ARROW)
<br />AD OR AP
<br />ACCESS DOOR (AD) OR
<br />0
<br />ACCESS PANEL (AP)
<br />FD
<br />rE
<br />FIRE DAMPER (1 HOUR)
<br />FD2
<br />FIRE DAMPER (2 HOUR)
<br />GENERAL
<br />SYMBOL
<br />DESCRIPTION
<br />1
<br />RECTANGULAR DUCT, SQUARE ELBOW
<br />WITH TURNING VANES
<br />RECTANGULAR DUCT, RADIUS VANED ELBOW
<br />EXTRACTION GRID
<br />FM------bW
<br />FLEXIBLE DUCT
<br />FLEXIBLE DUCT CONNECTION
<br />SIDEWALL SUPPLY AIR DIFFUSER,
<br />100 CFM
<br />GRILLE OR REGISTER AND CFM
<br />AIR FLOW
<br />SIDEWALL RETURN/EXHAUST AIR GRILLE
<br />100 FM
<br />OR REGISTER AND AIR FLOW
<br />�111 0 FM
<br />SCREENED OPENING AND CFM AIR FLOW
<br />SUPPLY OUTLET, CEILING TYPE,
<br />1400 CF
<br />DIFFUSER OR GRILLE, SQUARE OR
<br />LJ
<br />RECTANGULAR AND CFM AIR FLOW (4 TY
<br />I I
<br />SUPPLY OUTLET, CEILING TYPE, ROUND
<br />AND CFM AIR FLOW (SEE NOTE 4)
<br />400 CFN
<br />LINEAR DIFFUSER AND CFM AIR FLOW
<br />100
<br />(SEE NOTE 4)
<br />74r
<br />RETURN/EXHAUST REGISTER OR GRILLE,
<br />�J 100 CF
<br />CEILING DUCT TYPE AND CFM AIR FLOW
<br />RETURN/RELIEF GRILLE, CEILING TYPE,
<br />NON —DUCTED
<br />fUNIT
<br />HEATER, HORIZONTAL
<br />ROB
<br />UNIT HEATER, VERTICAL PROJECTION
<br />LINED DUCT
<br />SOUND ATTENUATOR
<br />0 i
<br />LINED DUCT WITH ACCESS DOOR
<br />AND SMOKE DAMPER
<br />LINED DUCT WITH AXIAL FLOW FAN
<br />CENTRIFUGAL FAN
<br />CENTRIFUGAL FAN, INLET GUIDE VANES
<br />F—LD
<br />Fo
<br />EXHAUST FAN
<br />SUPPLY AIR FLOW DIRECTION
<br />RETURN, OUTSIDE OR EXHAUST AIR
<br />FLOW DIRECTION
<br />GENERAL
<br />SYMBOL
<br />DESCRIPTION
<br />®
<br />THERMOSTAT, REMOTE, CEILING
<br />Q
<br />HUMIDISTAT, WALL
<br />❑H
<br />HUMIDISTAT CEILING
<br />4 D
<br />DUCT TYPE SMOKE DETECTOR
<br />E D
<br />DUCT TYPE HEAT DETECTOR
<br />STATIC PRESSURE REGULATOR
<br />TEMPERATURE SENSOR, HUMIDITY
<br />SENSOR, DUCT MOUNTED
<br />0
<br />THERMOSTAT, WALL
<br />ON
<br />NIGHT THERMOSTAT
<br />m
<br />THERMOSTAT, CEILING
<br />Q
<br />TEMPERATURE TRANSMITTER
<br />VAV TERMINAL LEGEND
<br />1ST AND 2ND CHARACTER:
<br />UNIT SIZE
<br />3RD CHARACTER:
<br />WC=HOT WATER COIL
<br />AC UNIT SERVED FROM
<br />*TERMINALMARK NUMBER
<br />SUGGESTED ABBREVIATIONS
<br />SUGGESTED ABBREVIATIONS
<br />ABBREVIATION DESCRIPTION I I ABBREVIATION DESCRIPTION
<br />A
<br />ANCHOR
<br />AAV
<br />AUTOMATIC AIR VENT
<br />AD
<br />ACCESS DOOR
<br />ADD
<br />ANGULAR DOWN DISCHARGE
<br />AF
<br />AIR FOIL WHEEL
<br />AFF
<br />ABOVE FINISHED FLOOR
<br />AP
<br />ACCESS PANEL
<br />APPROX
<br />APPROXIMATELY
<br />ARCH
<br />ARCHITECTURAL
<br />AUD
<br />ANGULAR UP DISCHARGE
<br />AVG
<br />AVERAGE
<br />BI
<br />BACKWARD INCLINED WHEEL
<br />BDD
<br />BACK DRAFT DAMPER
<br />BFP
<br />BACKFLOW PREVENTER
<br />BHD
<br />BOTTOM HORIZONTAL DISCHARGE
<br />BHP
<br />BRAKE HORSE POWER
<br />BLDG
<br />BUILDING
<br />BOD
<br />BOTTOM OF DUCT
<br />BOP
<br />BOTTOM OF PIPE
<br />BOS
<br />BOTTOM OF STEEL
<br />BTU
<br />BRITISH THERMAL UNIT
<br />BTUH
<br />BRITISH THERMAL UNIT PER HOUR
<br />BW
<br />BUTTWELD
<br />C
<br />COMMON
<br />Cv
<br />FLOW COEFFICIENT
<br />'C
<br />TEMPERATURE — DEGREES CELSIUS
<br />CAP
<br />CAPACITY
<br />CC
<br />COOLING COIL
<br />CCW
<br />COUNTER CLOCKWISE ROTATION
<br />CFM
<br />CUBIC FEET PER MINUTE
<br />CI
<br />CAST IRON
<br />q
<br />CENTER LINE
<br />CONN
<br />CONNECTION
<br />CONT
<br />CONTINUED/CONTINUATION
<br />CPLG
<br />COUPLING
<br />CW
<br />CLOCKWISE ROTATION
<br />DA
<br />DIRECT ACTING
<br />DB
<br />DRY BULB TEMPERATURE
<br />DBD
<br />DOWN BLAST DISCHARGE
<br />DIA 0
<br />DIAMETER
<br />DIS
<br />DEIONIZED WATER SUPPLY
<br />DIR
<br />DEIONIZED WATER RETURN
<br />DN
<br />DOWN
<br />DS
<br />DOWNSPOUT
<br />DWG
<br />DRAWING
<br />dB
<br />DECIBELS
<br />EA
<br />EXHAUST AIR / EACH
<br />EAT
<br />ENTER AIR TEMPERATURE (F)
<br />EFF
<br />EFFICIENCY
<br />ELL
<br />ELBOW
<br />ELEC
<br />ELECTRICAL
<br />ELEV, EL
<br />ELEVATION
<br />ESP
<br />EXTERNAL STATIC PRESSURE
<br />EVAP
<br />EVAPORATOR
<br />EWT
<br />ENTERING WATER TEMPERATURE
<br />EXH
<br />EXHAUST
<br />EXIST
<br />EXISTING
<br />EXT
<br />EXTERIOR / EXTERNAL
<br />'F
<br />TEMPERATURE — DEGREES FAHRENHEIT
<br />FC
<br />FORWARD CURVE WHEEL
<br />FD
<br />FIRE DAMPER
<br />FLR
<br />FLOOR
<br />FCO
<br />FLOOR CLEAN OUT
<br />FOB
<br />FLAT ON BOTTOM
<br />FOF
<br />FACE OF FLANGE
<br />FOIC
<br />FURNISHED BY OWNER, INSTALLED BY CONTRACTOR
<br />FOT
<br />FLAT ON TOP
<br />FPM
<br />FEET PER MINUTE
<br />FS
<br />FLOW SWITCH
<br />FT
<br />FEET
<br />FV
<br />FACE VELOCITY FPM
<br />GAL
<br />GALLONS
<br />GPM
<br />GALLONS PER MINUTE
<br />GALV
<br />GALVANIZED
<br />GA
<br />GAGE, GAUGE
<br />HC
<br />HEATING COIL
<br />HD
<br />HEAD — FEET OF WATER
<br />HORIZ
<br />HORIZONTAL
<br />HP
<br />HORSEPOWER
<br />HPC
<br />HIGH PRESSURE CONDENSATE
<br />HR
<br />HOUR
<br />HVAC
<br />HEATING, VENTILATING AND AIR CONDITIONING
<br />HPU
<br />HEAT PUMP UNIT
<br />HTG
<br />HEATING
<br />HPV
<br />HIGH POINT VENT
<br />ID
<br />INSIDE DIAMETER
<br />IE
<br />INVERT ELEVATION
<br />IGV
<br />INLET GUIDE VANE
<br />INSUL
<br />INSULATION
<br />IN
<br />INCHES
<br />KW
<br />KILOWATT
<br />KVA
<br />KILOVOLT —AMPERE
<br />LAT
<br />LEAVING AIR TEMPERATURE ('F)
<br />LBS, #
<br />POUNDS
<br />LWT
<br />LEAVING WATER TEMPERATURE ('F)
<br />MA
<br />MIXED AIR
<br />MAX
<br />MAXIMUM
<br />MBH
<br />HEAT CAPACITY BTU PER HOUR X 1000
<br />MCC
<br />MOTOR CONTROL CENTER
<br />MECH
<br />MECHANICAL
<br />MIN
<br />MINIMUM
<br />MOV
<br />MOTOR OPERATED VALVE
<br />MTD, MTG
<br />MOUNTED, MOUNTING
<br />NC
<br />NORMALLY CLOSED
<br />GENERAL NOTES
<br />NIC
<br />NOT IN CONTRACT
<br />NO
<br />NORMALLY OPEN / NUMBER
<br />NTS
<br />NOT TO SCALE
<br />1.
<br />DESIGNATES EQUIPMENT APPEARING ON
<br />NPSH
<br />NET POSITIVE SUCTION HEAD
<br />MECHANICAL EQUIPMENT SCHEDULES.
<br />CA
<br />OUTSIDE AIR
<br />2.
<br />SEE DRAWING M1d FOR ADDITIONAL MECHANICAL
<br />OBD
<br />OPPOSED BLADE DAMPER
<br />LEGENDS AND ABBREVIATIONS.
<br />OF
<br />OVERFLOW
<br />OS&Y
<br />OUTSIDE SCREW AND YOKE
<br />3.
<br />SEE CONTROL SCHEMATIC(S) FOR ADDITIONAL
<br />OD
<br />OUTSIDE DIAMETER
<br />ABBREVIATIONS AND SYMBOLS RELATING TO CONTROL
<br />OVHD
<br />OVERHEAD
<br />SYSTEMS.
<br />PBD
<br />PARALLEL BLADE DAMPER
<br />4.
<br />DIFFUSER SYMBOLS WITHOUT AIR FLOW DIRECTION
<br />PD/oP
<br />PRESSURE DROP OR DIFFERENTIAL PRESSURE
<br />ARROWS INDICATE AIR FLOW IN ALL DIRECTIONS (TWO
<br />PDI
<br />PLBG. & DRAINAGE INSTITUTE
<br />DIRECTIONS FOR LINEAR DIFFUSERS). AIR FLOW ARROWS
<br />POC
<br />POINT OF CONNECTION
<br />ARE USED TO INDICATE DESIRED AIR FLOW DIRECTIONS
<br />POS
<br />POSITION
<br />IN OTHER CASES.
<br />PRESS
<br />PRESSURE
<br />PRV
<br />PRSSURE REGULATING VALVE
<br />5.
<br />SOME ABBREVIATIONS AND SYMBOLS INCLUDED IN THIS
<br />PS
<br />PRESSURE SWITCH
<br />LEGEND MAY NOT BE FOUND ON ANY DRAWINGS. THEY
<br />PSIG
<br />PRESSURE — POUNDS PER SQUARE INCH, GAUGE
<br />ARE INCLUDED HERE AS PART OF A STANDARD LEGEND
<br />PSV
<br />PRESSURE RELIEF (SAFETY) VALVE
<br />AND MAY BE UTILIZED IN THE FUTURE.
<br />RA
<br />REVERSE ACTING (CONTROLLER) / RETURN AIR
<br />RECT
<br />RECTANGULAR
<br />REF
<br />REFERENCE
<br />REFERENCE
<br />DRAWINGS
<br />REV
<br />REVISED
<br />RH
<br />RELATIVE HUMIDITY
<br />RM
<br />ROOM
<br />ROT
<br />ROTATION
<br />RPM
<br />REVOLUTIONS PER MINUTE
<br />ROD
<br />REQUIRED
<br />RTN
<br />RETURN
<br />SA SUPPLY AIR
<br />SCFM CUBIC FEET OF AIR, AT STANDARD CONDITIONS
<br />SHC SENSIBLE HEAT CAPACITY
<br />SHF SENSIBLE HEAT FACTOR
<br />SHT SHEET
<br />SO SCREENED OPENING
<br />SOV SOLENOID OPERATED VALVE
<br />SP STATIC PRESSURE
<br />SQ SQUARE
<br />SS STAINLESS STEEL
<br />STL STEEL
<br />STRUC STRUCTURAL
<br />SW SOCKET WELD
<br />SUCT SUCTION CONSTRUCTION NOTES
<br />SV SAFETY RELIEF VALVE
<br />TDH
<br />TOTAL DYNAMIC HEAD (FEET OF WATER)
<br />TEMP
<br />TEMPERATURE
<br />TH
<br />TOTAL HEAD (FEET OF WATER)
<br />THC
<br />TOTAL HEAT CAPACITY
<br />THD
<br />TOP HORIZONTAL DISCHARGE
<br />THIRD
<br />THREADED
<br />TOD
<br />TOP OF DUCT
<br />TOS
<br />TOP OF STEEL
<br />TOP
<br />TOP OF PIPE
<br />TP
<br />TOTAL PRESSURE
<br />TS
<br />TEMPERATURE SWITCH
<br />TSP
<br />TOTAL STATIC PRESSURE
<br />TV
<br />TURNING VANE
<br />TYP
<br />TYPICAL
<br />UBD UP BLAST DISCHARGE
<br />VAV
<br />VARIABLE
<br />AIR VOLUME
<br />VD
<br />VOLUME
<br />DAMPER
<br />VP
<br />VELOCITY
<br />PRESSURE
<br />VERT
<br />VERTICAL
<br />VTA
<br />VENT TO
<br />ATMOSPHERE
<br />VTR
<br />VENT THROUGH ROOF
<br />WB WET BULB TEMPERATURE
<br />WG WATER GAUGE (INCHES OF WATER)
<br />W/ WITH
<br />WCO WALL CLEAN OUT
<br />WHA WATER HAMMER ARRESTOR
<br />FOR REFERENCE ONLY
<br />FACILITY DESIGN BY FS i DATE 06.27.2022
<br />SYM
<br />REVISION
<br />BY
<br />APPROVED
<br />DATE
<br />SYM
<br />REVISION
<br />BY
<br />APPROVED
<br />DATE
<br />®
<br />BOE//VO
<br />THIS C DESIGN BAND/ R
<br />SPECIFICATION IS APPROVED
<br />URAWN
<br />DAIL
<br />07 22 96
<br />SUBTITLE
<br />HVAC LEGEND
<br />CURRENT REVISION
<br />12727720
<br />SYMBOL
<br />DATE
<br />12.11.13
<br />—
<br />40-51 AS—BUILTS J 964058-01
<br />#
<br />CANADA
<br />07.22.96
<br />CCHB.RECKED
<br />M.C.S.
<br />07.22.96
<br />SHEET
<br />M 1 c
<br />A
<br />OBSERVATION TOWER HVAC UPGRADES 12727720
<br />SAZAN/RO
<br />12.11.13
<br />ENGINEER
<br />Q.C.
<br />07.22.96
<br />TITLE
<br />OBSERVATION TOWER HVAC UPGRADES
<br />BUILDING 40-51
<br />MECHANICAL MASTER EVERETT, WA
<br />APPROVED BY
<br />DEPT.
<br />DATE
<br />CHECKED
<br />Q.C.
<br />07.22.96
<br />JOB NO.
<br />COMPND.
<br />APPROVED
<br />APPROVED
<br />DII No. 40-051—M1c
<br />
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