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HEAT VENTILATION AND AIR CONDITIONER SHORT FORMS

Discussion in 'المنتدى التعليمي' started by mannan, 2/10/19.

  1. mannan

    mannan Administrator Staff Member


    [​IMG]

    HEAT VENTILATION AND AIR CONDITIONER SHORT FORMS


    FULL FORM SHORT ANSWER

    Make sure to check the front part of the drawings set
    for abbreviations used inside the engineering drawings because
    the list of abbreviations sometimes may vary from an office to another

    A

    AHU : AIR HANDLING UNIT
    AC : Air Conditioning / ALTERNATIVE CURRENT
    ACB : AIR CIRCUIT BREAKER
    A : Air / Compressed Air
    ACD : Automatic Control Damper
    AD : Access Door
    AF : Air Foil / Airofoil / Air flow
    AMP : Ampere
    AP : Access Panel
    APD : Air Pressure Drop
    AS : Air Stream
    ATC : Automatic Temperature Control
    ATM : Atmosphere​


    B

    BDD : Back Draft Damper
    BHP : Brake Horsepower
    BI : Backwards Inclined
    BOD : Bottom of Duct
    BTU : British Thermal Unit
    BTUH : BTU per Hour
    BMS : BUILDING MANAGEMENT SYSTEM
    BAS : BUILDING AUTOMATION SYSTEM​


    C

    C : Celsius Temperature
    CSU : CEILING SUSPENDED UNIT
    CENT : Center / Centrifugal
    CF : Cubic Feet
    CFM : Cubic Feet per Minute
    CH : Chilled / Chiller
    CHW : Chilled Water
    CHWR : Chilled Water Return
    CHWS : Chilled Water Supply
    CHWP : Chilled Water Pump
    CO : Carbon Monoxide
    CONN : Connection
    CT : Cooling Tower
    CTBD : Cooling Tower Blow Down
    CUH : Cabinet Unit Heater
    CWR : Condenser Water Return
    CWS : Condenser Water Supply
    CWP : Condenser Water Pump
    CCTV : CLOSED CIRCUIT TELEVISION​


    D

    D : Drain
    DB : Dry Bulb Temperature
    DEG : Degree
    DDC : Direct Digital Control
    DIA : Diameter
    DIM : Dimension
    DP : Differential Pressure
    DC : DIRECT CURRENT
    DOL : DIRECT ON LINE
    DB : DISTRIBUTION BOARD​


    DX : Direct Expansion

    E

    ELCB : EARTH LEAKAGE CIRCUIT BREAKER
    EA : Exhaust Air / Each
    EAHU : Exhaust Air Handling Unit
    EAT : Entering Air Temperature
    EF : Exhaust Fan
    EMER : Emergency
    EMS : Energy Management System
    ESP : External Static Pressure
    ET : Expansion Tank
    EUH : Electrical Unit Heater
    EWT : Entering Water Temperature
    EXH / EX : Exhaust
    EXT : External
    EXP : Expansion​


    F

    F : Fahrenheit Temperature
    FA : Fresh Air
    FCU : FAN COIL UNIT
    FA : Free Area / Fire Alarm
    FC : Flexible Connection
    FD : Floor Drain / Fire Damper / Fire Department
    FLA : Full Load Amps
    FLEX : Flexible
    FLRDR : Floor Drain
    FPM : Feet per Minute
    FPS : Feet per Second
    FRP : Fiberglass Reinforced Plastic
    FS : Flow Switch
    FT : Feet
    FTR : Fin Tube Radiation​


    G

    G : Gas
    GA : Gauge
    GAL : Gallons
    GALV : Galvanized
    GFU : Glycol Feed Unit
    GPH : Gallons per Hour
    GPM : Gallons per Minute
    GR : Grade​


    H

    HVAC : HEAT VENTILATION AND AIR CONDITIONER
    HB : Hose Bib Connection
    HD : Head
    HP : Horsepower / High Point / High Pressure
    HR : Hour
    HRU : Heat Recovery Unit
    HTG : Heating
    HWP : Hot Water Pump
    HWR : Hot Water Return
    HWS : Hot Water Supply
    HZ : Hertz Cycles per Second​


    I

    ID : Inside Diameter
    IN : Inches

    K

    KW : KILO WATT
    KVA : KILO VOLT AMPERES

    L

    LAT : Leaving Air Temperature
    LB : Pound
    LF : Linear Feet
    LD : Linear Diffuser
    LP : Low Point / Low Pressure
    LPS : Low Pressure Steam
    LRA : Locked Rotor Amps
    LUVR / LVR : Louver
    LVDR : Louvered Door
    LVG : Leaving
    LWT : Leaving Water Temperature​


    M

    M : Mass
    MAX : Maximum
    MBH : 1000 BTUH / Mega British Thermal Unit per Hour
    MCA : Minimum Circuit Amps
    MD : Motorized Damper
    MECH : Mechanical
    MIN : Minimum
    MU : Make Up Water
    MUA : Make Up Air
    MCCB : MOLDED CASE CIRCUIT BREAKER
    MCB : MINIATURE CIRCUIT BREAKER​


    N

    NC : Noise Criteria / Normally Closed
    NO : Normally Open
    NOM : Nominal​


    O

    OA : Outside Air
    OAI : Outside Air Intake
    OC : On Center
    OD : Outside Diameter
    ODP : Open Drip Proof
    OV : Outlet Velocity​




    P



    PCF : Pounds per Cubic Foot
    PD : Pressure Drop
    PH : Phase
    PRV : Pressure Reducing Valve
    PSI : POUND per SQUARE INCHES
    PSIA : POUND per SQUARE INCHES Absolute
    PSID : Pounds per Square Inch Differential
    PSIG : Pounds per Square Inch Gauge
    PVC : Polyvinyl Chloride
    PAC : PRECISION AIR CONDITIONER
    PCB : PRINTED CIRCUIT BOARD
    PLC : PROGRAMMABLE LOGIC CONTROL​


    R

    R : Radius
    RA : Return Air
    RET : Return
    RH : Relative Humidity
    RLA : Running Load Amps
    RLF : Relief
    RPM : REVOLUTION PER MINUTE / Rotation
    RTU : Roof Top Unit​


    S

    SA : Supply Air
    SCR : Screen
    SCT : Saturated Condensing Temperature
    SD : Smoke Detector / Smoke Damper
    SE : Smoke Exhaust
    SEN : Sensible
    SFD : Combination Smoke / Fire Damper
    SHC : Sensible Heat Capacity
    SP : Static Pressure
    SF : Square Feet
    SS : Stainless Steel
    SUP : Supply
    STP : SEWAGE TREATMENT PLANT​


    T

    TR : TONNAGE OF REFRIGERANT
    TON : 12000 BTUH Cooling Capacity
    T : Temperature / Thermostat
    TEFC : Totally Enclosed Fan Cooled
    TEMP : Temperature
    TSP : Total Static Pressure
    TSTAT : Thermostat
    TYP : Typical
    TC : Temperature Control​


    V

    V : Volts
    VAV : VARIABLE ADJUSTABLE VALVE / Variable Air Volume
    VD : Volume Damper
    VEL : Velocity
    VFD : VARIABLE FREQUENCY DRIVE
    VCD : VOLUME CONTROL DUMBER
    VRF : VARIABLE REFRIGERANT FLOW
    VRV : VARIABLE REFRIGERANT VALVE​


    U

    UC : Undercut Door
    UPS : UNINTERRUPTIBLE POWER SUPPLY

    W

    WB : Wet Bulb Temperature
    WC : Water Column
    WG : Water Gauge
    WPD : Water Pressure Drop
    WTD : Water Temperature Difference​

     

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