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  • Catalog 702

    Steam/Hot Water Unit HeatersHorizontal Air Delivery Model UHHVertical Air Delivery Model UDH

    Model UHH

    Model UDH

    Units are listed by the Canadian Standards Association

  • Catalog 702 / Page 2 of 36

    Table of Contents

    Design FeaturesHorizontalAirDeliveryModelUHH......................3VerticalAirDeliveryModelUDH..........................4

    Dimensional DataHorizontalAirDeliveryModelUHH......................5VerticalAirDeliveryModelUDH..........................6

    Performance DataModel UHH

    ModelUHHHotWater-HighMotorSpeed..........7ModelUHHHotWater-ReducedMotorSpeed....7ModelUHHSteam-HighMotorSpeed.................8ModelUHHSteam-ReducedMotorSpeed...........8HorizontalModelUHH-MotorData.....................9

    Model UDHModelUDHHotWater-HighMotorSpeed........10ModelUDHSteam-HighMotorSpeed...............10VerticalModelUDH-MotorData........................11

    Application Guidelines HorizontalAirDeliveryUnitHeaters...................12VerticalAirDeliveryUnitHeaters........................12OtherFactorsThatCanInfluenceSelection..........12SelectionforApplicationsWhereSoundisaFactor..............................................................12BuildingorRoomSoundZones............................12

    Locating Unit Heaters ..................................................... 13MonitorTypeBuilding..........................................14MillTypeBuilding................................................14WarehouseBuilding..............................................14Office/ManufacturingBuilding.............................14NarrowBuilding....................................................14

    Automatic Control ........................................................... 15

    Selection Formulas & Data .......................................... 16- 23Example1: HotWaterCalculation,HorizontalUnit......................................................16HotWaterUnitHeaterMountingHeightCorrectionFactors.................................................16HotWaterCalculationFormulas...........................17

    HotWaterHtngCap.ConversionFactors.............18CorrectionFactorsforVaryingWaterTemperatureDrop..................................................18EthyleneGlycolCorrectionFactors......................18Example2:SteamCalculation,HorizontalUnit...19SteamCalculationFormulas.................................20SteamHtngCap.ConversionFactors,HorizontalDelivery...............................................20AirTemperatureRiseConversionFactors,HorizontalDelivery...............................................21PropertiesofSteam...............................................21SteamUnitHeaterMountingHeightCorrectionFactors.................................................21Example3:HotWaterCalculation,VerticalUnit..........................................................22Example4:SteamCalculation,VerticalUnit........22SteamHtngCapacityConversionFactors,VerticalDelivery....................................................23AirTemperatureRiseConversionFactors,VerticalDelivery....................................................23

    Motor Data & Power Codes ............................................... 24ModelUHH&UDH.............................................24

    Performance Curves ..................................................... 25-28

    Options/AccessoriesUnitHeaterFactoryMountedOptions..................29UnitHeaterFieldInstalledOptions.......................29FieldInstalledOptions&AccessoriesforVerticalAirDeliveryModels.......................... 30-31

    Piping For Unit Heaters ...................................................... 32

    Guide Specifications ..................................................... 33-34HorizontalAirDeliveryModelUHH....................33VerticalAirDeliveryModelUDH........................34

    Metric & English Conversion ............................................. 35

  • Catalog 702 / Page 3 of 36

    Design Features

    Coil Sturdy,mechanicallybondedcopper/aluminum

    coilwith12finsperinchwith1/2nominaltubes HighBtucapacity Coilsaretestedat275psigairunderwater.Coils

    aresuitableforoperatingupto150psigsteamor220psigwaterand375F

    Finsarecontinuousacrosswidthanddepthofcoilandareverticallyorientedtoresistcollectionofdirtandforeignparticles

    Enclosure Rugged18-gaugecasingprotectsagainstabuse Twopieceenclosureallowsforeaseof

    maintenance Durableandattractivegraytexturedepoxy

    powdercoatingisstandard

    Louvers Adjustablehorizontallouversarestandardfor

    adjustmentofairdistribution Constructedofrigid18-gaugesteel Colormatchedtoenclosureforconsistent

    appearance

    Piping Connection NPTconnectionspermitquickandeasypiping

    withnoadditionalcomponentsneeded Mountedtocasingforrigidity

    Mounting Hardware Heavydutythreadedhardwareallowsunittobe

    mountedwiththreadedrod Optionalpipehangerkitavailableformounting

    unitwiththreadedpipe

    Formed Air Inlet/Outlet Die-formedventuriinletdrawsairsmoothly

    intounitformaximumairflow

    Motor Allmotorsaretotallyenclosed,permanently

    lubricatedforextended,reliablemotorlife Lowoperatingcostandquietoperation Whenteamedwithvariablespeedcontrol,fan

    speedadjustmentisinfinite Equippedwiththermaloverloadprotection

    Fan Lightweightanddynamicallybalanced Designedtomoveairefficientlywithminimum

    powerrequirement

    Finger Proof Fan Guard Standardequipmentper(CSA,OSHA) Securelymountsmotortounitwhileabsorbing

    vibrationwithrubberisolationmounts

    Horizontal Air Delivery Model UHH

  • Catalog 702 / Page of 36

    Design Features

    Coil Sturdy,mechanicallybondedcopper/aluminum

    formedcoilwith12finsperinchwith1/2nominaltubesbetweenextra-heavysteelpipeconnections

    HighBtuCapacity Coilsaretestedat275psigairunderwater.Coils

    aresuitableforoperatingupto150psigsteamor220psigwaterand375F

    Finsarecontinuousalongwidthanddepthandareverticallyorientedtoresistcollectionofdirtandforeignparticles

    Formed Air Inlet/Outlet Die-formedventurioutletdrawsairthroughunit

    formaximumairflow

    Air Diffusion Multiplearrangementsavailableforunlimitedair

    diffusionpatterns Accessoriesarefinishedwithepoxy-based

    powdercoatingtomatchunit

    Finger Proof Fan Guard Standardequipmentper(CSA,OSHA) Gives100%safetyconfidenceformountingin

    anyarea Constructedofpaintedsteelrod

    Fan Lightweight,dynamicallybalanced Designedtomoveairefficientlyandquietlywith

    minimumpowerrequirement

    Casing Rugged16-gaugecasingprotectsagainstabuse Separatetopandbottomenclosurepiecesallow

    foreaseofmaintenance Attractivegraytexturedepoxypowdercoatingis

    standardanddurable

    Motor Allmotorsaretotallyenclosed,permanently

    lubricatedforextended,reliablemotorlife Lowoperatingcostandquietoperation Designedforeasymotorremoval,importantfor

    highceilingapplications Equippedwiththermaloverloadprotection Highefficiency

    Mounting Hardware Heavydutythreadedhardwareallowsunittobe

    mountedwiththreadedrod Optionalpipehangerkit(requires2)available

    formountingunitwiththreadedpipe

    Junction Box Allunitwiringiscontainedinanelectrical

    junctionboxthatismountedtotheunitheatercasing

    Piping Connection Durablesteelheaderhasexternal NPTthreadsforeasyconnection

    Vertical Air Delivery Model UDH

  • Catalog 702 / Page of 36

    Dimensional Data

    Unit Size 18 through 86 Unit Size 108 through 340

    Unit Size A B C D E GNPT

    CONNECTIONSFAN

    DIAMETERAPPROX.SHIPPING

    WT. LB.

    Notes:1. All dimensions in inches.2. UHH-18 through UHH-86 have side NPT female pipe connections.3. UHH-108 through UHH-30 have top and bottom NPT male pipe connections.. Units should be mounted a minimum of " from wall.

    UHH-18UHH-24UHH-33UHH-47UHH-63UHH-86

    UHH-108UHH-121UHH-165UHH-193UHH-258UHH-290UHH-340

    111919191927272727333339

    16 7/816 7/819 3/19 3/2 3/2 3/2 7/82 7/831 7/831 7/8

    0 13/160 13/160 13/16

    7 1/27 1/27 1/27 1/28 1/28 1/29 1/29 1/21010111112

    1/2 1/2 3/ 3/ 3/ 3/6 1/6 1/6 1/8 3/88 3/88 3/88 3/8

    1212121218181818

    2 7/82 7/832 7/832 7/832 7/8

    3 1/23 1/23 1/23 1/23 1/23 1/23 1/23 1/23 1/23 1/23 1/23 1/23 1/2

    1/ 1/6 1/6 1/6 1/6 1/7 1/

    10101111

    2222

    2 1/2 1/2 1/

    3/ 3/ 3/ 3/ 3/ 3/

    1 1/21 1/21 1/21 1/2

    222

    99

    1212111818202022222

    1819336127677996

    16167182

    F H J

    Table 1. Dimensions Model UHH

    Horizontal Air Delivery Model UHH

  • Catalog 702 / Page 6 of 36

    3-1/3-1/3-1.3-/83-/8-1/2-1/2-1/2

    13-3/1-3/17-3/19-3/21-3/23-3/27-3/29-3/

    2323303333

    1213

    1-7/16192021227

    3-1/83-1/83-1/8

    2-3/2-3/2-3/2-3/2-3/2-3/2-3/2-3/

    Dimensional Data

    Unit Size 42, 59 Unit Size 78 through 610

    Table 2. Dimensions Model UDH

    UNIT SIZE A B C D E F G MALE NPTCONNECTIONSFAN

    DIAMETERAPPROX.SHIPPING

    WT. LB.UDH-42, 59UDH-78, 95

    UDH-139, 161UDH-193, 212UDH-247, 279UDH-333, 385

    UDH-510UDH-610

    6-3/86-3/810-3/812-3/812-3/818-3/818-3/818-3/8

    1213

    1-7/16171821227

    117

    18-7/820-7/822-7/82-3/28-3/30-3/

    1-7/81-7/8

    222

    2-1/22-1/22-1/2

    1-1/21-1/21-1/2

    22

    2-1/22-1/22-1/2

    2699

    1261189270290

    H I

    Vertical Air Delivery Model UDH

    Note:All dimensions in inches.

  • Catalog 702 / Page 7 of 36

    Performance Data

    Horizontal Air Delivery Model UHH (Hot Water)Table 3. Hot Water (High Motor Speed)

    Table 4. Hot Water (Reduced Motor Speed)

    UnitSize Btu/Hr. GPM

    WATER DATA MOTOR DATA

    10,6601,18620,09027,71638,1300,7866,2073,800109,060127,920

    0.90.830.120.210.70.790.81.02.83.3

    310309068701001201119902310

    39003

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