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VH Fan-Coil Units Hi-Rise, Vertical
2 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Construction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Standard and Optional Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Coils, Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Riser Selection and Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Fan Performance Curves, PSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13ECM Fan Motor Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Performance Fan Curves, EC Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Motor, Fan and Sound Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Unit Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
TABLE OF CONTENTS
NOTES:• Aweb-basedComputerSelectionProgram,“Web-Select”,isavailabletofacilitatetheselectionprocess. Contactyourrepresentativetoobtainaccesstothispowerfulandtime-savingprogram.• Somedrawingsarenotshowninthiscatalog.• Alldatahereinissubjecttochangewithoutnotice.• Drawingsnotforinstallationpurposes.• ETLReportNumberJ99024557-003forsingleVHunits.ForVHA/VHBunits,seeReportNumber3014576-002(nonfirerated)and3016281(UL1479firerated).
• VerticalHi-RisemodelsVHA/VHBweresubjectedtothefiretestprogramandcertifiedincompliancewiththerequirementsofUL1479byIntertekTestingServicesLtd.
ENVIRO-TEC 3
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
FEATURES AND BENEFITS
HIGH PERFORMANCE
ENVIRO-TEC VH Series Vertical Hi-Rise fan coil units are designed to maximize flexibility of selection andinstallation, and for ease of service .
The units are also designed to exceed the stringent quality standards of the institutional market, whileremaining cost competitive in the commercial and residentialsegmentsofthemarket.
ENVIRO-TECVerticalHi-Risefancoilunitssetthenewstandards for innovation, quality, flexibility, and com-petitive pricing .
DESIGN FLEXIBILITY
TheextensivevarietyofstandardoptionsavailableonVHSeriesfancoilsarewhereyoufindtheversatilitytofit any HVAC system designer’s needs .
Optionsinclude:singlewallstainlesssteeldrainpans,foil faced or elastomeric closed cell foam insulation, doubledeflectionaluminumdischargegrilles,manualormotorizedoutsideairdampersandelectricheatwithsingle point power connection and silent relays. AllelectricheatunitsarelistedwithETLasanassemblyandcarrythecETLlabel.
AllunitscomplywiththelatesteditionofAHRIStandard440 for testing and rating fan coil units, are certified, anddisplaytheAHRIsymbol.
High efficiency motors, fan relays, disconnects and fusingmeaneasiercoordinationbetweenmechanicaland electrical trades .
Coiloptionsallowforthreeorfourrowchilledwaterandoneor two rowhotwatercoils in the reheatpositiononly.Atotaloffiverowsofcoilareaccommodated.
CONVENIENT INSTALLATION
All VH Series fan coil units are shipped completely assembled, reducing field installation timeand labor.All units are thoroughly inspected and tested prior to shipment, eliminating potential problems at startup.Motorwiringisbroughttoacontrolcompartmentontheinsideoftheunit,reducingelectricalhook-uptime.
Factory furnished pressure tested valve packagesassure proper fit, operation and performance .
Factory furnishedpressure testedriserswithswagedconnections are available in a variety of materials,diameters and lengths .
VH Series fan coil units have several standard features thatprovideforinstallationflexibilitythatareunmatchedintheindustry.Featuringinternalstainlesssteelbraid-ed hoses that link the piping packages to the risershut-off valves, the unique design of the VH Series allows for easy field configuration of left hand, righthand,orback riser connectionswithout theneed forthermalcuttingandjoiningofpiping.Boththesidesaswellasthebackpanelsaremanufacturedwithriserslotknockouts.Supplyairopeningknockoutsareincludedon all sides, and the top of the unit . If requested, the VHC/VHM/VHSunitsshipfromthefactorywithknock-outs removed for the selected arrangement of supply air and riser location .
Risers may ship in advance of the unit to facilitate instal-lation and fire safing of floor penetrations in limited space.Delayingthedeliveryofunitsuntilwallsareinplaceprotectsthefancoilunitsfromconstructiondebrisduring installation and pressure testing of the risers .
OPTIMUM BUILDING PERFORMANCE
TheVHSeriesfancoilchassisisbuiltfromgalvanizedsteel . This metal surpasses the ASTM 125 hour salt spray test for corrosion and rust . Decorator front panels, supply grilles, and exposed cabinet Model VHX arepowdercoatedgalvannealed18gaugesteel.Standardinsulationis1/2inchthickfiberglass,complyingwithUL181 and NFPA 90A . Optional foil faced or elastomeric closedcellfoaminsulationmaybespecified.
Allunits,withorwithoutelectricheat,arecETLlistedandlabeled.AllwiringisincompliancewithNEC,assur-ingsafetyandqualityfortheowner.
VHSeriesfancoilunitshaveremovablefansandcoils.Theentirecoilassemblycanbeeasilyremovedfromthe unit and replaced or serviced on a workbench,reducingequipmentdowntime.Coilsareaccessibleforcleaningandremovableforserviceorreplacement.Filtersareeasilyreplaceablewhenthedecoratorfrontpanelisremoved.Asanoption,thedrainpancanbeequippedforremovalforcleaningorreplacementwith-outdisturbingthecoilassembly.
TandemMasterandTandemSlaveModelsVHA/VHBshipcompletewithrisersenclosedinawallplenumwithonelayerof5/8"gypsumforsoundattenuation.Asanoption, Tandem Master and Tandem Slave Units may be ordered with two layers of 5/8" gypsum and fireblockingmaterial. TheTandemMaster andTandemSlavefireratedunithasbeentestedandcertifiedfor1hourratingperUL1479.
4 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
CONSTRUCTION FEATURESMODELS VHC, VHM, VHS, VHA/VHB, VHX
VHSeriesfancoilshavemanystandardandoptionalfeatureswhichareuniquetotheindustry(see page 7 for a complete listing) .
Doublewallcompositeorstainlesssteel(optional) insulated drain pans are doubleslopedtodrainconnections
Optionalremovabledrainpan
Chilledwatercoolingcoilsupto4rows
Hotwaterheatingcoilsupto2rowsarelocated in the reheat position
Maximum5totalrowsofcoilscombined
OptionalelectricheatisETLlistedasanassem-blyforsafetycompliance
Entireelectricheatassemblycanberemovedforservicing
Singlepointpowerconnectiononallunitswithandwithoutelectricheat
Powdercoated18gaugesteeldecora-torfrontpanelreturngrille(notshown)
Topdischargeknockoutpermits ducted connection
1/2"thickfiberglassinsu-lation (standard), or foil faced or elastomeric closed cell foam insulation (optional)
Integral1"throw-awayfilter(standard), or1"pleated or synthetic media filter (optional)
Permanentlylubricated,threetap,PSCfan motors designed for quiet and effi-cient operation
Fanassemblycanbeeasilyremovedforservicing on slide out rails
Doubledeflectiondischargegrille (optional)
Factorymountedchilledandhotwaterand condensate insulated risers (not shown).Risersmayalsoshipinadvance of the unit . ModelVHXexposedcabinet
featuresdurable,powdercoatpaint finish
Unitorwallmountedanalog,digitaldisplay,orprogrammablethermostats
P-trap(removable)connection to condensate drain riser
Fieldconfigurable.Bothsideandbackpanelsaremanufacturedwithknockoutsforriserpip-ing and supply air openings . Facilitates field conversion of riser and supply air grille loca-tions .
Factory mounted pipingpackages
Hinged,quickopencontroldoorallowseasy access to all electrical components
Stainlesssteelflexiblebraidedhoses provideinstallationflexibilityand accommodate riser expansion and contraction
Optionalblowershield(notshown)elimi-natesaccidentalcontactwithfanassembly
ETLandAHRI440listedandlabeled
TandemMasterandTandemSlaveModelsVHA/VHBshipcompletewithrisersenclosedinawallplenumwithonelayerof5/8"gypsumforsoundattenuation.Asanoption,TandemMasterandTandemSlaveunitsmaybeorderedwithtwolayersof5/8"gypsumandfireblockingmaterialforaonehourfireratingperUL1479 .
ENVIRO-TEC 5
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
CONSTRUCTION FEATURES
FAN DECK
For easeof service, the fan/motor assembly is easilyremovedbyunscrewingtwolocknutslocatedatthefrontof the assembly. Slide rails support the fan duringremoval and installation, and the electrical harness is equippedwithaquickconnectplug.
DRAIN PAN
Theslopedinsulateddrainpanisavailableinstainlesssteelconstruction.Standarddrainpansaredoublewall,composite,extendundertheentirecoilsection,doublesloped,andareremovable.Asanoption,theVHSeriesdrainpancanbeequipped foreasyremoval fromthefront of the unit for inspection and cleaning . For optimum moistureresistanceandcleanability,thefancoilunitmaybe lined with foil faced fiberglass insulation (shownabove)orelastomericclosedcellfoaminsulation.
FILTERS
Filteroptionsinclude1"throwaway(standard),pleatedMERV 8, or synthetic media . Filters are easily replace-ablefromthereturnairwhenthefrontpanelisremoved.
POWDER COAT PAINTED SURFACEExposedcabinetModelVHX,aswellasthefrontreturn textured decorator panel, fea-tureapowdercoatfinishthatresists scuffing, scratching, fading, and fingerprints .
COILS AND PIPING
Allfancoilsareavailablein2or4pipeconfigurations.The heating coil is standard in the reheat position . Accessforcleaningonboththeenteringandleavingairsidesisavailable.Coilsareremovablefromthefrontofthe unit for service .
STAINLESS STEEL BRAIDED HOSES
Stainless steel braided hoses allow for flexibility andthermalexpansionwithintheunitcabinet.Thehose-to-coil and hose-to-riser connections are made via a threadedswiveladapter,simplifyingcoilremoval.
RISERS
Risers, coils and piping packages are pressure testedandshipinstalledontheunitasacompletepack-age . Risers may also ship in advance of the unit . This optiongreatly simplifies installation,while keeping theunitsfreeofconstructiondebrisduringpressuretestingof the risers .
CONTROL ENCLOSURE
The spacious hinged electrical compartment houses all electric heat and control components . Terminal stripsarefurnishedforsimplepowerandcontrolwiringconnections .
6 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
CONSTRUCTION FEATURES
REDUCING MOLD GROWTH IN HI-RISE RESIDENTIAL PROJECTS
VHSeriesfancoilsfeatureseveraloptionstomitigatemoldandmildewwhenappliedinaproperlydesignedandconstructedbuilding.Forhumidclimates,ENVIRO-TECoffersinnovationstoensureoptimumhumiditycontrolatpart load conditions .
• Elastomeric closed cell foam insulationisagreatalternativetofiber-glassinsulationinextremelyhumidclimates,aswellaseducationalandhi-riseresidentialfacilities.Thematerial'ssmoothandcleanablesurfacemakes it naturallymold resistant, with no danger of fibrousmaterialentering the airstream . Additional features include:
- Easilycleanedsurface resistsdirt,moistureabsorption,andmicro-bialgrowth–eveniftornorpunctured.
- Higher temperature limit than polyethyleneCCF, able towithstandservicetemperaturespikeswithoutpermanentfailure.
- MoreflexiblethanpolyethyleneCCFat75°F,allowingexpansionandcontraction in hot and cold cycle applications .
- Compression resistance; retains its thermal insulating capacity . - Outermoisturevaporbarrierorlinernotrequired. - Ratings: NFPA 90A and 90B, ASTM E84, ASTM G-21 (fungi resis-
tance),UL181(moldgrowth/humidityandairerosion)
• Motorized coil bypass damperinconjunctionwithfanspeedcontrolincreases dehumidification at part load and more closely matches cool-ingcapacitytotheroomloadduringoffpeakoperation.
• Innovative temperature and humidity controller improves part load relative humidity control .
• Deep loading, synthetic media filtrationprotectsboththecoilandthecoilbypassairfromairbornecontaminants.Filterframeandmediaarenonorganic,andwillnotsupportmoldgrowth.
• Ship In Advance Risers allow installation and pressure testing duringbuildingconstruction,priortounitsarrivingonjobsite.
• Stainless Steel Drain Pans and Coil Casingsareavailable forusewhereaddedcorrosionresistanceorlongevityarerequired.
• Coils and piping packages are removable in minutes through the standardfrontpanelwithonlyascrewdriverandpairofwrenchesforperiodic cleaning or service outside of the unit .
• IAQ drain panisdoubleslopedtopreventstandingwater.Anoptionaldrainpanisremovableforeffectivecleaning.
Refer to the Guide Specifications in this catalog for additional information on many of these features .
Supplyairopeningknockoutsmaybeleftinplaceduringbuildingcon-structiontokeepunitsdryandfree
fromconstructiondebris.
Positively sloped drain pan prevents standingwater;linedwithclosedcell
foam insulation for addedmoisture protection .
ENVIRO-TEC 7
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
STANDARD AND OPTIONAL FEATURES
STANDARD FEATURES
Construction • AHRI440certifiedandlabeled • Galvanizedsteelconstruction• 1/2"thickfiberglassinsulation• Integralfilterrackwith1"throwawayfilter• Riserslotknockouts• Supplyairknockouts
Decorator Front Panel• Stampedlouverreturnairgrille• Durablepowdercoatpaint• Quarter-turncamlockfasteners
Supply Air• Singleoutlet• Front,sideortopoutlets
Coils• Cooling-3or4rowchilledwater• Heating-1or2rowhotwater-reheatposition• 5totalrowsofcoolingandheatingcoilsmaximum• Highefficiencyaluminumfinsurfaceforoptimizingheat
transfer, pressure drop and carryover• Easilyremovableforservice• Manualairvents
Drain Pans• Doublewall,composite,anti-microbial• Doubleslopedtodrainconnection• Removable,extendedundertheentirecoilsection• 7/8"O.D.drainconnection• P-trapfactoryinstalled
Fan Assemblies• Forwardcurved,DWDIcentrifugaltypeblowers• 115volt,singlephase,threetapPSCmotors• Quickdisconnectmotorconnections• Easilyremovablefan/motordeckforservice
Electrical• ETLlistedforsafetycompliance• Electricalenclosurewithaccessdoorforfieldwiringter-
minations• Terminalblockforfieldconnections
Electric Heat• ETLlistedasanassemblyforsafetycompliance• Integralelectricheatassemblywithremovable
elements for easy service• Automaticresetprimaryandback-upsecondary
thermal limits• Singlepointpowerconnection
OPTIONAL FEATURES
Construction• Master/Slavearrangements• Foilfacedfiberglassinsulation• Elastomericclosedcellfoaminsulation• 1"pleatedfilter(MERV8)• Manualormotorizedoutsideairdamper• Blowershield
OPTIONAL FEATURES (continued)Decorator Front Panel• Recessingframe • FullfacedaluminumgrilleSupply Air• Doubledeflectiondischargegrille(s)• Doubleoutlets• Sightandsoundbafflesfordoubleoutletunits• OpposedbladedamperCoils• Automaticairvents• StainlesssteelcoilcasingsDrain Pans• Stainlesssteelconstructionwithexternalinsulation• RemovableforcleaningFan Assemblies• 208-230&277volt,singlephase,threetapPSCmotors• 115,208-230&277V,singlephase,threetap
EC motors• 115,208-230&277V,singlephase,variablespeed
EC motorsElectrical• SCRfanspeedcontroller• Silentsolidstatefanrelays• Toggledisconnectswitch• Condensateoverflowswitch(drainpan)• Mainfusing• UnitandremotemountedthreespeedfanswitchesElectric Heat• Silentrelay/contactors• Doorinterlockingdisconnectswitches• MainfusingPiping Packages• Factoryassembledandinstalled• 1/2"2-wayand3-waynormallyclosed,twoposition
electric motorized valves• Stainlesssteelbraidedhoses(threadedswivel
connections) for thermal expansion including isolation ballvalveswithmemorystop
• Fixedandadjustableflowcontroldevices• P/TportsandY-strainers• Modulatingcontrolvalves• High pressure close-off actuators (50 PSIG max)Thermostats• Analog,digitaldisplay,orprogrammable• Unitandwallmounted• 2and4-pipecontrolsequences• Automaticandmanualchangeover• Integralthreespeedfanswitches• ADAmountinglocationonfrontpanelorunitsidesRisers• Type-MorLcopperwithswagedconnections• 3/4"to3"diameters• Upto1-1/2"closedcellinsulation• Type-Mcoppercondensateriser• Riserextensions • Risercover• Shipinadvancerisers
8 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
COILS, PHYSICAL DATA
NOTE:Capacityandstaticpressureswillbeaffectedforapplicationsabovesealevel.Toapplycorrectionfactors,multiplyfac-tor to desired coil capacity or fan curve data .
Example:VH03with3rowcoil,highspeedfanoperationat3000ft.abovesealevelandwith0.1IN.W.C.ESP.
Solution:UsingcorrectionfactorsfromAltitudeCorrectionchartfor3000ft.abovesealevel,datafromAHRIStandardRatingstableandfancurves. Total capacity = 12,500 BTUH ( .983) = 12,288 BTUH SensibleCapacity=8,000BTUH(.90)=7,200BTUH SP=.1(.90)=.09IN.W.C.
COILSENVIRO-TECoffershotwaterandchilledwatercoilsforspecificapplicationwithallVHSeriesfancoilunits.Stricton-siteinspectionbefore,during,andafterinstallationguaranteesthehighestqualityandperformanceavailable.
STANDARD FEATURES• Cooling-3or4rowchilledwater• Heating-1or2rowhotwater• 5totalrowsofcoolingandheatingcoilsmaximum• Highefficiencyaluminumfinsurfaceforoptimizingheattrans-
fer, pressure drop and carryover• Manualairvents
OPTIONAL FEATURES• Automaticairvents• Stainlesssteelcoilcasings
ENVIRO-TECoffersWeb-Select®,theindustry’sfirstweb-basedfancoilratingandselectionprogramforcompleteunit, coil and sound selection .
ALTITUDE CORRECTION FACTORS
ALTITUDE (FT.) 0 1000 2000 3000 4000 5000 6000 7000
AIR DENSITY (LB./FT.3) 0 .075 0 .0722 0 .0697 0 .0672 0 .0648 0 .0625 0 .0601 0 .0579
TOTAL CAPACITY 1 .000 0 .988 0 .986 0 .983 0 .981 0 .979 0 .977 0 .975
SENSIBLE CAPACITY 1 .000 0 .960 0 .930 0 .900 0 .860 0 .830 0 .800 0 .770
STATIC PRESSURE 1 .000 0 .960 0 .930 0 .900 0 .860 0 .830 0 .800 0 .770
ALTITUDE CORRECTION
FACE AREA, FREE AREA AND FILTER SIZES
UNIT SIZE
COIL FACE AREA
FILTER FACE AREA
ACTUAL FILTER SIZES
3 2 .00 [ .19] 2 .09 [ .20] 13.25X22.75x1"[338x581x25]4 2 .00 [ .19] 2 .09 [ .20] 13.25X22.75x1"[338x581x25]6 2 .72 [ .25] 2 .83 [ .27] 15.25X26.75x1"[389x683x25]8 2 .72 [ .25] 2 .83 [ .27] 15.25X26.75x1"[389x683x25]
10 4 .22 [ .39] 4 .32 [ .41] 20.25X30.75x1"[517x785x25]12 4 .22 [ .39] 4 .32 [ .41] 20.25X30.75x1"[517x785x25]
ENVIRO-TEC 9
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
PHYSICAL DATA
AHRI STANDARD RATINGS
NOTE:Basedon80°FDBand67°FWBEAT,45°FEWT,10°Ftemperaturerise,highfanspeed.MotortypeisPSCandmotorvoltageis115/1/60.Airflowunderdrycoilconditions.Allmodelstestedat0.0"externalstaticpressure.
UNIT WEIGHT DATA
NOTE:Unitweightdataisinpounds[kilograms].
MODEL / SIZE
COIL AIRFLOW CFM
(DRY FLOW)
COOLING CAPACITY WATER POWER INPUT
(WATTS)Rows FPI QT (BTUH) QS (BTUH) Flow Rate (GPM)
WPD ft-wg
VH 03 3 14 347 13,560 9,350 2 .7 7 .4 66 VH 04 3 14 442 16,700 11,580 3 .3 9 .5 118 VH 06 3 14 601 22,620 15,700 4 .5 9 .0 142 VH 08 3 14 800 27,760 19,610 5 .5 10 .6 247 VH 10 3 14 1006 37,470 26,030 7 .5 9 .1 279 VH 12 3 14 1238 43,120 30,410 8 .5 10 .0 474 VH 03 4 14 337 16,390 10,780 3 .3 12 .5 66 VH 04 4 14 427 20,250 13,400 4 .0 15 .0 118 VH 06 4 14 588 27,740 18,370 5 .5 14 .4 142 VH 08 4 14 780 34,420 23,150 6 .9 19 .4 247 VH 10 4 14 990 43,350 29,350 8 .7 7 .7 279 VH 12 4 14 1206 50,540 34,600 10 9 .1 474
COMPONENT UNIT SIZE3 4 6 8 10 12
VH BASE UNIT 218 [99] 218 [99] 235 [107] 235 [107] 277 [126] 277 [126]VHA/VHB
FIRE RATED WALL PLENUM 130 [59] 130 [59] 145 [66] 145 [66] 160 [73] 160 [73]
VHA/VHB NON FIRE RATED WALL PLENUM 78 [35] 78 [35] 87 [40] 87 [40] 96 [44] 96 [44]
(4) 2" RISERS & (1) 1" RISER (115" L & 3/4" INS) 100 [45] 100 [45] 100 [45] 100 [45] 100 [45] 100 [45]
TOTAL COIL ROWS
3 ROW - DRY 15 [7] 15 [7] 17 [8] 17 [8] 24 [11] 24 [11]3 ROW - WET 19 [9] 19 [9] 22[10] 22[10] 31 [14] 31 [14]4 ROW - DRY 18 [8] 18 [8] 21 [10] 21 [10] 29 [13] 29 [13]4 ROW - WET 23 [10] 23 [10] 27 [12] 27 [12] 38 [17] 38 [17]5 ROW - DRY 21 [10] 21 [10] 24 [11] 24 [11] 34 [15] 34 [15]5 ROW - WET 27 [12] 27 [12] 32 [15] 32 [15] 45 [21] 45 [21]
10 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
ELECTRIC HEAT
STANDARD FEATURES• ETLlistedasanassembly for safety compliance• Singlepointpowerconnection• Mountedinpreheatposition• Automaticresetprimaryandback-up
secondary thermal limits• Internalwiringratedat105°C• Integralelectricheatassemblywith removableelementforeasyservice
• Stainlesssteelterminalsandhardware
OPTIONAL FEATURES• Silentsolidstaterelays• Manualresetsecondarythermalunits• Doorinterlockingdisconnectswitch• Mainfusing
USEFUL FORMULASkW* = CFM x ∆Tx1.085** 34131Ø AMPs = kWx1000 Volts* 1kW=3413BTU/H** CapacityatsealevelAltitude Considerations:Reduceby0.034foreach1000ft.ofaltitudeabovesealevel. Example:5000ft./1000ft.=5 5 x 0 .034 = 0 .17 1 .085 - 0 .17 = 0 .915
NOTES:1. ShadedareasoftheelectricheatselectionchartindicatekWandvoltageoptionsnotavailable.2. Availablevoltagesaresinglephase,60hertz.3. SizeheaterforLeavingAirTemperature(LAT)lessthan104°F.4. Silent,solidstateheaterrelayisavailableforheatercurrentslessthan18amps.5. AskyourrepresentativeaboutcontinuouslymodulatingelectricheatusingSSRandspecialcontroloptions.
ELECTRICAL CALCULATIONS INFORMATION1.Contactyourlocalrepresentativeformoreinformationonelectricalcalculations,includingFLA,MCA,andMOP.2.Non-FusedDoorInterlockDisconnectSwitchshallbesizedaccordingtoMCA.3.FusedDoorInterlockDisconnectSwitchandMainFusingshallbesizedaccordingtoMOP.
ELECTRIC HEAT SELECTION CHART (AMPS)
UNIT SIZE
MBH 3.4 6.8 10.2 13.7 17.1 20.5 23.9 27.3 30.7 34.1KW 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
VOLTS AMPS
03115 8 .7 17 .4 26 .1208 4 .8 9 .6 14 .4230 4 .4 8 .7 13 .1277 3 .6 7 .2 10 .8
04115 8 .7 17 .4 26 .1 34 .8208 4 .8 9 .6 14 .4 19 .2230 4 .4 8 .7 13 .1 17 .4277 3 .6 7 .2 10 .8 14 .4
06115 8 .7 17 .4 26 .1 34 .8208 4 .8 9 .6 14 .4 19 .2 24 .1230 4 .4 8 .7 13 .1 17 .4 21 .8277 3 .6 7 .2 10 .8 14 .4 18 .1
08115 8 .7 17 .4 26 .1 34 .8208 4 .8 9 .6 14 .4 19 .2 24 .1 28 .9 33 .7 38 .5230 4 .4 8 .7 13 .1 17 .4 21 .8 26 .1 30 .5 34 .8277 3 .6 7 .2 10 .8 14 .4 18 .1 21 .7 25 .3 28 .9
10115 8 .7 17 .4 26 .1 34 .8208 4 .8 9 .6 14 .4 19 .2 24 .1 28 .9 33 .7 38 .5 43 .3230 4 .4 8 .7 13 .1 17 .4 21 .8 26 .1 30 .5 34 .8 39 .2 43 .5277 3 .6 7 .2 10 .8 14 .4 18 .1 21 .7 25 .3 28 .9 32 .5 36 .1
12115 8 .7 17 .4 26 .1 34 .8208 4 .8 9 .6 14 .4 19 .2 24 .1 28 .9 33 .7 38 .5 43 .3230 4 .4 8 .7 13 .1 17 .4 21 .8 26 .1 30 .5 34 .8 39 .2 43 .5277 3 .6 7 .2 10 .8 14 .4 18 .1 21 .7 25 .3 28 .9 32 .5 36 .1
ENVIRO-TEC 11
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
RISER SELECTION AND DATA
RISER APPLICATION AND SIZING
Technical information on heat transfer, fluid flow and pipe sizing can be found in theASHRAE FundamentalsHandbookandvariousothertechnicaldocumentsandpublications.Someofthefactorsaffectingriserapplicationandsizingarenoise,tubeerosionandeconomics.TheFrictionLossForRiserschart(nextpage)displaysrisertubediametersizesasafunctionofflow(GPM),frictionlossandwatervelocity.Formaximumriservelocityonpressuredropper100ft.,refertoASHRAE2001Fundamentals35.3Table6forRiserSizing.Risersizescanbeofasinglediameteronlowrisebuildings,orvaryingsizesonmediumtohighrisebuildings.Generally,risercop-pertype,size, lengthandinsulationthicknessaredeterminedbythe locationof thefancoilunit inthebuilding.ChilledwaterandhotwaterrisersareavailableinType-MorType-Lcopper,varyingdiametersfrom3/4"to3",andwith up to 1-1/2" thick closed cell foam insulation. Condensate risers areavailable inType-Mcopper, varyingdiametersfrom3/4"to11/4",andwith1/2"thickclosedcellfoaminsulation.
RISER EXPANSION
Generally,inmediumtohighrisebuildings,allowancemustbemadeforpipeexpansion.ModelVHhi-risefancoilunitsarefurnishedwithhoseswhichactasexpansionloopsintegraltotheunit.Thehosewillallowfor+/-1½"ofriserexpansionandcontraction.Additionalexpansioncompensationmustbemadeintherisersysteminthefieldwheremovement isexpectedtoexceedthefactoryallowances.TheAllowableRiserLengthsBetweenSystemExpansionLoopschart(nextpage)displaystheexpansioncharacteristicsofriserscomparedtowatertemperaturedifference.Technicalinformationonpipeexpansion,contractionandanchoringcanbefoundintheASHRAEHVACSystemsandEquipmentHandbookandvariousothertechnicaldocumentsandpublications.
12 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
RISER SELECTION AND DATA
GENERAL FAN NOTES
1. Fancurvesonthefollowingpagedepictactualperformanceofeachmotortapwithoutanyaddi-tionalfanbalanceadjustment.Actualcapacitieswhichfallbeloweachcurvecanbeobtainedbyaddinganadjustmentdevice.
2. ENVIRO-TECfancoilunitsareequippedwithpermanentsplit-capacitor(PSC)motorswiththreeseparatetaps(High,MediumandLow)whichpro-videsvariablehorsepoweroutputs.Mostoften,size selections are conservative and actual CFM requirementsand/orexternalstaticpressurerequirementsarelowerthanthosespecified.Inthiscase,theunitfanmotorcanberunatlowormediumtap,substantiallyreducingtheoperatingcost of the unit .
3. Allfancurvesarefor115/1/60motorsandincludelossesforcabinet,returngrilles,electricheater,3or4rowcoilandclean1"throwawayfilter.Forothercoilconfigurations,adjustperformancecurvesbasedonpressurelossesforthecoilsusingWeb-Select® .
4 . See page 17 for fan motor electrical data .
ENVIRO-TEC 13
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
FAN PERFORMANCE CURVES, PSC
SIZE 03
0
0 .1
0 .2
0 .3
0 .4
0 .5
0 .6
0 50 100 150 200 250 300 350 400
SCFM
E.S.P. (IN.W.G.)
LOW MED
HIGH
4ROWCOIL3ROWCOIL
SIZE 04
0
0 .1
0 .2
0 .3
0 .4
0 .5
0 .6
0 .7
0 50 100 150 200 250 300 350 400 450 500 550
SCFM
E.S.P. (IN.W.G.)
LOW MED
HIGH
4ROWCOIL3ROWCOIL
SIZE 06
0
0 .1
0 .2
0 .3
0 .4
0 .5
0 .6
0 .7
0 50 100 150 200 250 300 350 400 450 500 550 600 650
SCFM
E.S.P. (IN.W.G.)
LOW
MED
HIGH
4ROWCOIL3ROWCOIL
SIZE 08
0 .0
0 .1
0 .2
0 .3
0 .4
0 .5
0 .6
0 .7
0 .8
0 .9
1 .0
0 100 200 300 400 500 600 700 800 900 1000
SCFM
E.S.P. (IN.W.G.)
LOW MED
HIGH
4ROWCOIL3ROWCOIL
SIZE 10
0
0 .1
0 .2
0 .3
0 .4
0 .5
0 .6
0 .7
0 .8
0 100 200 300 400 500 600 700 800 900 1000 1100SCFM
E.S.P. (IN.W.G.)
LOW MED
HIGH
4ROWCOIL3ROWCOIL
SIZE 12
0
0 .1
0 .2
0 .3
0 .4
0 .5
0 .6
0 .7
0 .8
0 .9
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
SCFM
E.S.P. (IN.W.G.)
LOW MED
HIGH
4ROWCOIL3ROWCOIL
14 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
EC MOTOR OPTIONS
THE ENERGY EFFICIENT SOLUTION
ENVIRO-TECofferstwohighefficiencyalternativestothe PSC motor. These are brushless DC (BLDC)motors with permanent magnet rotors, commonlyreferred to as ECMs (electronically commutated motors.)ECmotorshavebeenusedformanyyearsinresidentialHVACunits,andhavenowbecomethenorm for high efficiency light commercial HVAC applica-tionsaswell.ENVIRO-TECofferstwodifferenttypesofECmotorinVHSeriesfancoilunits.WhileeachoftheseECmotorssignificantly increases the operating efficiency of ENVIRO-TEC fan coils, they also provide different controlandperformancecapabilities.Foreachmotor,fan speed control is accomplished through a micropro-cessorbasedcontrollerthatelectronicallycontrolsthespeedof themotor.Thesemotorsprovidepeakeffi-ciencyratingsbetween70&80%formostapplications.Thefirst,fullfeatured,ECmotorofferstwochoicesofmotor control: 1) Threespeed(useradjustable)operation.Eachof
thethreespeedsprovidesconstantairflow,andcanbeindependentlyadjustedinthefield.
2) Continuously variable speed operation, constantairflow. This is achieved via proportional controlfromaremote2–10VDCsignal.
The second EC motor offering provides Constant Torque operation . This motor is factory programmed for three separate fixed torque settings, corresponding to three speed, high efficiency operation . The three speedsarenotuseradjustable.However,eachofthesemotors is supplied with a high capacity or standardcapacityplugwhichcanbemanuallychanged in thefieldtoassistinbalancingthesystem.
ECM FEATURES AND BENEFITS
Ultra-High Motor & Controller Energy EfficiencyEC motors offer several advantages over PSC motors infanCoils,includingvariablespeed,constantCFMorconstant Torque operation, and significantly higher efficiency . Due to the Permanent magnet rotor and electronic commutation, the EC Motor maintains approximately75%efficiencyatallspeeds.Designer / Owner FlexibilityTheECMincorporatesballbearings in lieuofsleevebearingstypicallyutilizedwithaninductionmotor.Unlikeasleevebearingmotor,theECMdoesnothaveaminimumRPMrequirement forbearing lubrication.This allows it to operate over a much wider speedrange,andprovidesformaintenance–freeoperation.A reduced spare parts inventory is another plus .
Custom Applications —Programmable Fan OperationBoundless control opportunities arise for the EC motorduetothecontrollabilityofthepermanentmagnet rotor combined with pro-grammableelectroniccommutation.Various input signals can direct themotortobehaveinanappli-cation specific mode . For instance, multiple discrete fan capacitiescanbeachieved.In addition, the fan speed canbevariedinresponseto the space temperature load . By default, the fan is also programmed for a soft start . This means that the motor starts at a low speed and slowlyramps up to the required speed .Extended Motor LifeThe high motor efficiency provides a significantly reduced operating temperature compared to an induc-tion motor. The lower temperature increases thelongevity of all electrical components and therefore the lifeofthemotor.Theballbearingsdonotrequirelubri-cation and do not adversely impact the motor life . ExpectedECMlifewillbeconsiderablylongerthanaPSC motor, due to the reduced operating temperature andballbearingcomponents.ApplicationMostvariablespeedelectronicdevices, includingtheECMoperatewitharectifiedandfilteredACpower.Asa result of the power conditioning, the input currentdrawisnotsinusoidal;rather, thecurrent isdrawninpulsesatthepeaksoftheACvoltage.Thispulsatingcurrent includes high frequency components called harmonics . Harmonic currents circulate on the delta side of a Delta-Wye distribution transformer. On theWyesideofthetransformer,theseharmoniccurrentsare additive on the neutral conductor . A transformer usedinthistypeofapplicationmustbesizedtocarrytheoutputKVAthatwillincludetheKVAduetocirculat-ing currents.Careful designmust be providedwhenconnecting single-phase products to three-phase sys-temstoavoidpotentialproblemssuchasoverheatingof neutral wiring conductors, connectors, and trans-formers. In addition, design consideration must beprovidedtoaddressthedegradationofpowerqualitybythecreationofwaveshapedistortion.Insummary,properconsiderationmustbegiventothepowerdis-tribution transformer selection and ground neutralconductor design to accommodate the 3-phase neutral AMPsshownintheadjacenttable.Specificguidelinesareavailablefromthefactory.
ENVIRO-TEC 15
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
PERFORMANCE FAN CURVES, EC MOTORS
0
0.1
0.2
0.3
0.4
0.5
50 100 150 200 250 300 350 400 450
ESP(IN. W.C.)
SCFM
SIZE 03
0
0.1
0.2
0.3
0.4
0.5
0.6
200 250 300 350 400 450 500 550
ESP(IN. W.C.)
SCFM
SIZE 04
0
0.1
0.2
0.3
0.4
0.5
0.6
150 200 250 300 350 400 450 500 550 600 650 700
ESP(IN. W.C.)
SCFM
SIZE 06
GENERAL FAN NOTES, VARIABLE EC MOTORS
1 . Fan curves depict actual performance at the maximum speed of the EC motor . Depending upon external static pressure,flowratesareachievableanywherewithinthecurveboundarybyadjustingthemotorspeedthroughtheelectronicinterfacecontrolboard.
2.Airflowrateswillbeconstantforvaryingdegreesofexternalstaticpressurecausedbyfilterloadingorotherductsystemvariablesoncetheelectronicinterfacecontrolboardissettodesiredflowrate.
3.Fancurvescompensateforthepressurelossesoftheunitcabinet,coilrows,filterloadingandotheroptionalappurtances .
4.ECmotorsoperateusingarectifiedACpowersourcethatisconvertedtoanon-sinusoidalDCpowerwaveform.Harmonicdistortionmayoccurandcirculateonthepowerdistributionsystem.Circulatingharmoniccur-rentsarepotentiallyadditiveontheneutralconductorsof3-phase,4-wireWyedistributionsystems.Neutralconductorsmustbeengineeredtoaccountfortheadditionalcurrent(amperes)encountered.
5 . See page 17 for EC motor electrical data .
16 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
PERFORMANCE FAN CURVES, EC MOTORS
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
725 775 825 875 925
ESP(IN. W.C.)
SCFM
SIZE 08
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
875 925 975 1025 1075 1125
ESP(IN. W.C.)
SCFM
SIZE 10
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
800 850 900 950 1000 1050 1100 1150 1200 1250
ESP(IN. W.C.)
SCFM
SIZE 12
ENVIRO-TEC 17
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
MOTOR, FAN AND SOUND DATA
MOTOR AND FAN DATA
SOUND DATA
NOTES:1. Motorelectricaldataisnameplateddata.Actualdatawillvarywithapplication.2. 230voltmotorisnameplatedfor208-230/1/60.Use230voltmotordatafor208voltapplications .
NOTES:1. SounddatatestedinaccordancewithAHRI350-2000.2. Soundlevelsareexpressedindecibels,dBRe:1x10-12watts.3. Total sound power level data based on Model VHC with fan CFM at corresponding motor tap with 115/1/60 volt motor,
4 row coil, 1" throwaway filter, double deflection discharge grille, 0.0" external static pressure and standard rated internal pressure losses .
UNIT SIZE FAN SPEED SCFMTOTAL SOUND POWER LEVEL
OCTAVE BAND / CENTER FREQUENCY (HZ)2/125 3/250 4/500 5/1000 6/2000 7/4000 8/8000
3High 356 59 52 49 44 34 29 27
Medium 279 56 49 46 40 29 24 23Low 212 51 45 41 34 22 20 18
4High 475 61 54 50 44 37 33 26
Medium 372 56 49 46 39 31 27 26Low 281 53 44 41 33 24 21 18
6High 601 68 58 55 49 44 40 33
Medium 505 62 53 51 45 39 34 29Low 385 57 49 47 40 32 27 23
8High 864 68 60 59 55 49 46 38
Medium 712 65 58 57 52 46 43 31Low 600 62 54 55 48 42 38 30
10High 985 70 65 62 61 51 48 44
Medium 802 68 62 59 54 49 45 41Low 625 63 58 56 50 44 40 35
12High 1224 73 70 68 64 58 55 47
Medium 1092 69 66 64 58 53 50 41Low 902 63 60 58 51 46 42 35
PSC ECM3 ECM FLA3-Phase Neutral Current
FLA3-Phase Neutral Current
FLA3-Phase Neutral Current
FLA3-Phase Neutral Current
FLA3-Phase Neutral Current
FLA3-Phase Neutral Current
HighMedium
LowHigh
MediumLowHigh
MediumLowHigh
MediumLowHigh
MediumLowHigh
MediumLow
2.6
1.3
0.9
0.6
1.0
0.9
0.5
0.5
0.3
0.8
1.0
0.6
0.5
4.8
3.0 4.8
2.9
1.5 2.6
2.6 4.5 2.6 4.51.94.8 8.3 5.0 8.7 2.8 4.82.0 3.0 4.812 1/4 (1) 1/3 (1) 1/3 (1) 1
8.3 5.0 8.7 2.810 1/5 (1) 1/3 (1) 1/3 (1) 1 4.8
4.9
2.7
4.54.8 8.3 5.0 8.7 2.8 4.8
2.6 4.5 2.6 4.54.8 3.0
2.6 4.5 1.7 2.9
08 1/6 (1) 1/3 (1) 1/3 (1) 1
8.3 2.3 4.0 2.8 4.8 1.706 1/15 (1) 1/3 (1) 1/4 (1) 1 4.8
2.6 4.5 2.6
4.5 1.5 2.64.8 8.3 2.0 3.5 2.8 4.8
1.7 2.6 4.5 0.9 1.6
04 1/25 (1) 1/3 (1) 1/4 (1) 1
8.3 1.3 2.3 2.8 4.8 1.00.303 1/35 (1) 1/3 (1) 1/4 (1) 1 4.8
2.6
Unit Size
Fan Speed
Motor HP (Qty)# of Fans
Amps @ 120/1/60 Amps @ 208-230/1/60 Amps @ 277/1/60
PSC
ECM3 ECM
PSC
ECM3 ECM
PSC
ECM3 ECM
18 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
DIMENSIONAL DATAMODEL VHC - CONCEALED UNIT
NOTES:1 . All dimensions are inches [mm] . Metric values are soft conversion .2. Alldimensionsare±1/4[6mm].3. Tileringisinstalledonfrontofunitasshown,andmaybemovedtoleftorrightsideofunitinfield.4. Wiringfromelectricalentrypointtocontrolenclosureisfurnishedandinstalledbyothersinfield.5. Risersavailablefrom3/4"[19mm]to3"[76mm]diameterwith1/2"[13mm]thickinsulation,and3/4"[19mm]to21/2"[64mm]diameterwith
3/4"[19mm]thickinsulation.6. Riserlengthis120"[3048mm]max.,100"[2540mm]min.7. Backriserlocationshown.Seearrangementdrawingsforavailableunitconfigurations.8. Factorymountedrisersshown.Risersmayalsoshipinadvanceofunit.SeeShipInAdvanceRiserdrawingsfordetails.
ENVIRO-TEC 19
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
MODEL VHS - SLAVE UNIT
NOTES:1 . All dimensions are inches [mm] . Metric values are soft conversion .2. Alldimensionsare±1/4[6mm].3. Tileringisinstalledonfrontofunitasshown,andmaybemovedtoleftorrightsideofunitinfield.4. Wiringfromelectricalentrypointtocontrolenclosureisfurnishedandinstalledbyothersinfield.5. Allpipingandinsulationbetweenslaveunitandrisersisfurnishedandinstalledinthefieldbyothers.6. Backconnectionlocationshown.Seearrangementdrawingsforavailableunitconfigurations.7. Allcoilanddrainconnectionsare"retracted"andbracedinternallyforshipment.8. Coilconnectionsare5/8"[16mm]O.D.femalesweat.Drainp-trapisdesignedtoaccept7/8"[22mm]O.D.coppertube.9. Slaveunitsarefurnishedwithfactoryinstalledshutoffvalvesandfieldconnectiontubes,unlessmasterunitrisersareshippedinadvance.
DIMENSIONAL DATA
20 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
DIMENSIONAL DATAMODEL VHX - EXPOSED CABINET
NOTES: 1 . All dimensions are inches [mm] . Metric values are soft conversion . 2. Alldimensionsare±1/4[6mm]. 3. Thermostatisshippedlooseandmaybeunitsurfacemountedorremotewallmounted. 4. Wiringfromelectricalentrypointtocontrolenclosureisfurnishedandinstalledbyothersinfield. 5. Risersavailablefrom3/4"[19mm]to3"[76mm]diameterwith1/2"[13mm]thickinsulation,and3/4"[19mm]to21/2"[64mm]diameterwith
3/4"[19mm]thickinsulation. 6. Riserlengthis120"[3048mm]max.,100"[2540mm]min. 7. Allunitsarebackriser,frontsinglesupply,ArrangementBF00only. 8. Factorymountedrisersshown.Risersmayalsoshipinadvanceofunit.SeeShipInAdvanceRiserdrawingsfordetails. 9. StandardcabinetfinishisPearlWhiteSatin.10. Floorandceilingtrimfurnishedandinstalledbyothers.
ENVIRO-TEC 21
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
DIMENSIONAL DATASHIP IN ADVANCE RISER ASSEMBLY
NOTES:1. Allrisersandvalvesareshippedwithprotectivecaps.Thesecapsshouldremaininplaceuntilinstallationoftheunit.2. Eachvalveissuppliedwithano-ringthatisbaggedandshippedlooseforfieldinstallationbyothers.3. Allrisersarefactorytested,andguaranteedtobeleakfreeattimeofshipment.4. Riserinformationshownshallreflectmatchingunitidentificationlabels.5. VHSSlaveunitswillhavemirrorimageorientationandwillbelabeledinunits.6 . Condensate p-trap and hose clamps ship installed in unit for field connections to drain riser .
22 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
DIMENSIONAL DATAMODEL VHA/VHB - TANDEM UNITS (PAGE 1 OF 2)
NOTES: 1 . All dimensions are inches [mm] . Metric values are soft conversion . 2. Alldimensionsare±1/4[6mm]. 3. Thermostatmounting–Tileringisinstalledonfrontofunitasshownandmaybemovedtoleftorrightofunitasshownandmaybemoved
to left or right side of unit in field . 4. Wiringfromelectricalentrypointtocontrolenclosureisfurnishedandinstalledbyothersinfield. 5. Risersavailablefrom3/4"[19mm]to2-1/2"(64mm]diameterwith1/2"[13mm]or3/4"[19mm]thickinsulation. 6. Riserlengthis120"[2921mm]max,100"[2540mm]min. 7. NON-FIRERATEDunitshownwithtype-Xgypsumboardatbackofslaveunit.FIRERATEDunitshavetype-Xgypsumboardatbackof
bothslaveandmasterunits.FIRERATEDunitdesignhasbeentestedinaccordancewithUL1479-FireTestOfThroughPenetrationFireStops,andisapprovedtobeartheETLlistingmarkforThroughPenetrationFireStopAssemblies.
8. ForfurtherfireratinginformationrefertotheInstallationInstructions,drawing70-74-023. 9 . See page 2 of 2 for dimensions .10. RefertoarrangementdrawingsforavailableTandemMasterandTandemSlaveunitconfigurations.
ENVIRO-TEC 23
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
DIMENSIONAL DATAVHA/VHB - TANDEM UNITS CABINET DIMENSIONS (PAGE 2 OF 2)
TandemMasterandTandemSlaveModelsVHA/VHBshipcompletewithrisersenclosedinawallplenumwithonelayerof5/8"gypsumforsoundattenuation.Asanoption,TandemMasterandTandemSlaveunitmaybeorderedwithtwolayersof5/8"gypsumandfireblockingmaterialforaonehourfireratingperUL1479.
24 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
DIMENSIONAL DATADOUBLE DEFLECTION ALUMINUM DISCHARGE GRILLE
Color is "Pearl White Satin".5. Standard finish is powder coat baked enamel.
7. Mounting hardware included.
2. All dimensions are ±1/4 [6mm].
DIMENSIONS - In [mm]
unit to prevent interference of frames. may require furring one side away from6. Installation of grilles on adjacent unit sides
and blades.4. Construction is roll formed aluminum frame
installation.3. Discharge grilles are shipped loose for field
are soft conversion.1. All dimensions are Inches [mm]. Metric values
NOTES:
GASKET
SEE NOTE 7MTG. HOLES
[78]3-1/16
TYP.[32]
1-1/4
[38]1-1/2
DAMPER OPTIONALOPPOSED BLADE
HEIGHTUNIT DISCHARGE
H =
WIDTHUNIT DISCHARGE
W =
TYP.[16]5/8
TYP.3/4 [19]
B
A
[6]1/4
VERTICAL HI-RISE &
TANDEM MASTER AND TANDEM
SLAVE SAME SIZE UNITS
TANDEM MASTER AND TANDEM
SLAVE UP SIZED UNITS
ENVIRO-TEC 25
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
DIMENSIONAL DATA
NOTES:1 . All dimensions are inches [mm] . Metric values are soft conversion .2. Alldimensionsare±1/4[6mm].3. Installedwallpanelsextendapproximately3/4"[19mm]fromfinishedwallsurface.4. Standardfinishispowdercoatbakedenamel.ColorisPearlWhiteSatin.5. Mountinghardwareisshippedlooseforfieldinstallation.6. ADAthermostat:actualinstalledheightisdeterminedbyunitinstallationmethodandmayvary.7. ADAthermostatisshippedlooseforfieldinstallationbyothers.8. Sizesshownarefor"up-sized"cabinetunitsusedinTandemMasterandSlavepairs.
STAMPED LOUVER FRONT RETURN AIR PANEL
26 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
UNIT ARRANGEMENTARRANGEMENT DRAWING • VHC, VHM, VHA
NOTES: 1. Alldrawingssubjecttochangewithoutpriornotice. 2. Returnairandaccessarealwaysonfrontofunit. 3. Sight&Soundbaffleprovidedasrequired. 4. Sight & Sound baffle not available on units with top supply
outlet . 5. Opposedbladedamperisoptionalononesupplygrilleforunits
withdoublesupplyoutlets. 6. Thisdrawingappliestosingleandmasterunits. 7 . Fourth character indicates outside air location . 8. ModelVHCunitsshownabovewithoptionalriserchase.Riser
chasenotavailableonVHMunits.VHAunitsmustbematedto VHB units .
9. ModelVHXavailablewitharrangementBF00only.10. Forfieldconfiguredarrangements,specify0000whenordering.
AIRFLOW DIRECTION
ENVIRO-TEC 27
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
UNIT ARRANGEMENTMODEL VHM, VHA, VHC TANDEM MASTER AND
TANDEM SLAVE UNIT CONFIGURATION
TANDEM MASTER & SLAVE
TANDEM MASTER & SLAVE
NOTES:1. Alldrawingssubjecttochangewithoutpriornotice.2.Forotherpossiblecombinations,seepages26,27and28.3.Fireratedunitsshownnonfireratedisstandard.4.Sight&Soundbafflesprovidedasrequired.
28 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
UNIT ARRANGEMENTOUTSIDE AIR INLET DESIGNATIONS
LOCATION DESIGNATIONS ARE TYPICAL FOR ALL FS MODELS.
UNIT SIDE DESIGNATIONS
**R L**L R
**B R**
LOCATIONS.2. THIS DRAWING SHOWS AVAILABLE RETURN AND OUTSIDE AIR INLET1. RETURN AIR AND ACCESS ARE ALWAYS ON FRONT OF UNIT.NOTES:
5. FSC UNIT WITH OPTIONAL RISER CHASE SHOWN. OUTSIDE AIR IN ARRANGEMENT CODE.
4. OUTSIDE AIR INLET LOCATION IS ALWAYS LAST CHARACTER RISER, SUPPLY, AND RETURN CONFIGURATION DETAILS.
3. SEE ARRANGEMENT DRAWINGS FOR COMPLETE UNIT
RIGHT RISER - LEFT O/A
BACK RISER - RIGHT O/A
B L
RIGHTTOP
BACK
LEFT
LEFT RISER - RIGHT O/A
BACK RISER - LEFT O/A
R = RIGHTL = LEFT
0 = NONE
DISCHARGE 2 LOCATION
FRONT
B F 0 R
F = FRONTT = TOPB = BACK
RISER LOCATION
DISCHARGE 1 LOCATION
OUTSIDE AIR LOCATION
O/A
O/A
4-3/4[121]
[114]
4-1/2
O/A
O/A
6" DIA.
RIGHT SIDE SIMILAR BUT OPPOSITE.LEFT SIDE OUTSIDE AIR SHOWN,
SEE NOTE 5
ENVIRO-TEC 29
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
GUIDE SPECIFICATIONS
GENERALFurnish and install ENVIRO-TEC VH Series Vertical Hi-RiseDirectDriveFanCoilUnitswhereindicatedontheplansandinthespecifications.Unitsshallbecom-pletelyfactoryassembled,testedandshippedasonepiece.Allunitsshallbecapableofmeetingorexceed-ing the scheduled capacities for cooling, heating and air delivery . All unit dimensions for each model and size shall be considered maximums. Units shall be ETLlistedincompliancewithUL/ANSIStandard1995,andbecertifiedascomplyingwiththelatesteditionofAHRIStandard 440 .
CONSTRUCTIONAll unit chassis shall be fabricated of heavy gaugegalvanized steel panels able tomeet 125 hour saltspray test per ASTM B-117 . All exterior panels shall beinsulatedwith1/2"thickinsulationwithamaximumkvalueof.24(BTU•in)/(hr•ft2•°F)andratedfora maximum air velocity of 5000 f .p .m . Insulation must meet all requirements of ASTM C1071 (including C665),UL181 forerosion,andcarrya25/50 ratingfor flame spread/smokedeveloped perASTME-84,UL723andNFPA90A.
Option:Forunitswithmultipleoutlets,includeaninsu-latedsheetmetalbaffleinsidethedischargeplenumtobreakthesightlinesbetweenthetwodischargeoutletsandtoattenuateroomnoisethatcouldbetransmittedthrough the openings .
Allunitpanelsshallhaveknockoutsforsupplyairopen-ings and riser slots to facilitate the field conversion of riser location and supply air grille location .
Option:Supplyairopeningknockoutsshallbefactorysealed and left in place during shipping and staging at thejobsite.
Allunitsshallhavedecoratorfrontpanelsfabricatedofnot less than 18 gauge galvannealed steel . The front panel shall include a stamped louver return air grille andbeattachedwithquarterturnquickopenfastenerstoallowforeasyremovalandaccessforservice.
All concealed units shall have a duct collar on the discharge .
Allexposedunitsshallhaveexteriorpanelsfabricatedofnot less than 18 gauge galvannealed steel . The front panel shallbeattachedwithquarterturnquickopenfastenerstoallowforeasyremovalandaccessforservice.
Option:Provideanarchitecturalgradedoubledeflec-tion aluminum discharge grille .
Option: Provide foil faced insulation in lieu of standard . Foil insulation shall meet or exceed the requirements
statedabove,and inadditionmeetASTMStandardsC-665andC-1136 forbiologicalgrowth in insulation.Insulationshallbelinedwithaluminumfoil,fiberglassscrim reinforcement, and 30 pound kraft paper lami-nated together with a flame resistant adhesive. Allexposededgesshallbesealed topreventany fibersfrom reaching the air stream .
Option: Provide Elastomeric Closed Cell Foam Insulation inlieuofstandard.InsulationshallconformtoUL181forerosionandNFPA90Aforfire,smokeandmelting,and comply with a 25/50 Flame Spread and SmokeDevelopedIndexperASTME-84orUL723.Additionally,insulationshallcomplywithAntimicrobialPerformanceRating of 0, no observed growth, per ASTM G-21.Polyethyleneinsulationisnotacceptable.
Option: Tandem Master and Tandem Slave units . Masterandslaveunitsshallbesuppliedjoinedtogeth-erbyanominalsix-inchwallthatcontainsthesupply,return and condensate risers. The cabinets of bothunits in the pair will be the same height and widthregardlessofcapacityandwillbethestandarddimen-sionoftheunitwiththegreatercapacity.
Theslaveunitwillhavea5/8"layeroftype-Xgypsumboardmechanicallyfastenedtotheunitwalladjacentto the risers .
Whereaonehourratingof thepartitionbetweentheunits is required, a second layer of type-X gypsumboardshallbemechanicallyfastenedtothemasterunitwalladjacenttotherisers.An18gaugesteelblowershieldshallbeprovidedforboththemasterandslaveunits.Pipingpenetrationsinthepartitionwallsshallbeprovidedwith fireblockingmaterial.TheunitshallbecETLlistedincompliancewithANSI/UL-1479StandardTest Method for Fire Tests of Through Penetration Fire Stops.A copy of theAuthorization toMark certifyingcompliancebyanationallyrecognizedtestinglabora-toryshallbeprovidedwiththeunitsubmittal.
PAINTED FINISHAllpaintedcabinetexteriorpanelsshallbefinishedwithaheatcuredanodicacrylicpowderpaintofthestandardfactory color .
SOUNDUnits shall have published sound power level datatestedinaccordancewithAHRIStandard350-2000.
FAN ASSEMBLYUnitfanshallbedynamicallybalanced,forwardcurved,DWDIcentrifugaltypeconstructedof18gaugegalva-nized steel for corrosion resistance.Motors shall behighefficiency,permanentlylubricatedsleevebearing,permanentsplit-capacitortypewithULandCSAlistedautomatic reset thermal overload protection and three
30 ENVIRO-TEC
FORM ET115.26-EG5 (216) VH Fan Coil Units, Hi-Rise, Vertical
GUIDE SPECIFICATIONS
separatehorsepowertaps.Singlespeedmotorsarenotacceptable.
Option:Provideablowershieldtocovertheentirefanassembly. The blower shield shall be tight fitting topreventairbypassandprohibitaccidentalcontactwiththe fanassembly.Units thatallowaccidental contactwith the fan assemblywith the decorator front panelremovedarenotacceptable.
The fan assembly shall be removed and servicedthrough the front and safety panels . The entire assem-bly shall be able to come out of the unit easily byremovingtwolocknutsandunpluggingthemotor.
Option: Provide an electronic fan speed controller (SCR) wiredtohighmotortapforaidinbalancingthefancapac-ity.Thespeedcontrollershallhaveaturndownstoptoprevent thepossibility of harming themotorbearings,and incorporate electrical noise suppression to minimize noiseontheincomingpowerlines.
Option: Devices used to energize and de-energize (switch) fan speedsmust be totally silent.Magnetic,mercury,and/orquietrelaysand/orcontactorsarenotacceptable.
COILSAll coolingandheatingcoilsshalloptimize rowsandfins per inch to meet the specified capacity . Coils shall have seamless copper tubes and shall bemechani-callyexpandedtoprovideanefficient,permanentbondbetween the tube and fin. Fins shall have high effi-ciency aluminum surface optimized for heat transfer, air pressure drop and carryover .
Allcoilsshallbehydrostaticallytestedat450PSIGairpressureunderwater,and rated foramaximum300PSIGworkingpressureat200°F.
Heatingcoilsshallbefurnishedinthereheatpositionas standard .
Allwatercoilsshallbeprovidedwithamanualairventfittingtoallowforcoilventing.
Option: Provide automatic air vents in lieu of manual air vents .
Option: Provide a motorized two-position coilbypass damper. Damper shall be sized such thatwhen it isopened,30%of the fanairflowcapacitywillbedrawnthroughthedamperopening,bypass-ing the cooling coil .
Option:Coilcasingshallbefabricatedfromstainlesssteel .
DRAIN PANSPrimary condensate drain pan shall be double wallcomposite and extend under the entire coil section . Drainpansshallbeofonepiececonstructionandbepositively sloped for condensate removal .
Drain pan shall carry no more than a 25/50 FlameSpreadandSmokeDevelopedRatingperASTME-84andUL723andanAntimicrobialperformanceratingof0,noobservedgrowth,perASTMG-21.
The P-Trap shall be easily removed and servicedthrough the front panel .
Option: Provide a removable primary drain pan toallowforinspectionandcleaning.Thedrainpanshallbeeasilyremovedthroughthefrontpanelwithoutdis-turbing the coils. Drain pan access that requiresremovalofcoilsisnotacceptable.
Option: Provide a primary drain pan constructed entirely of heavy gauge type stainless steel for supe-rior corrosion resistance . Stainless steel drain pans shallbeexternally insulatedandmeetorexceed therequirementsstatedabove.
FILTERSAllunitsshallbefurnishedwithaminimum1"nominalglassfiberthrowawayfilter.Filtersshallbetightfittingtopreventairbypass.Filtersshallbeeasilyremovablefromthereturnairopeningwiththefrontpanelremoved,withouttheneedfortools.
Option:Provideunitwith1"pleatedfilter(MERV6).
Option: Provideunitwith1"self-gasketingfiltercon-sisting entirely of synthetic media and frames . Filter shallbetightfittingtopreventairbypass.Filtershallbeeasilyremovablefromthereturnairopeningwiththefrontpanelremoved.Filterefficiencyshallbe40%at 1 .5 microns .
ELECTRICALUnitsshallbefurnishedwithsinglepointpowerconnec-tion.Provideanelectricaljunctionboxwithterminalstripfor motor and other electrical terminations . The factory mountedterminalwiringstripconsistsofamultipleposi-tionscrewterminalblocktofacilitatewiringterminationsfor the electric control valves and thermostats .
ELECTRIC HEATFurnishanelectricresistanceheatingassemblyasanintegralpartofthefancoilunit,withtheheatingcapac-ity, voltage and kilowatts scheduled. The heaterassemblyshallberatedforinstallationonthefancoilunitandbelocatedsoasnottoexposethefanassem-bly to excessive leaving air temperatures that couldaffect motor performance .
ENVIRO-TEC 31
VH Fan Coil Units, Hi-Rise, Vertical FORM ET115.26-EG5 (216)
GUIDE SPECIFICATIONS
Theheaterandunitassemblyshallbe listedforzeroclearanceandmeetallNECrequirements,andbeETLlistedwiththeunitasanassemblyincompliancewithUL/ANSIStandard1995.
AllheatingelementsshallbeopencoiltypeNi-Chromewiremountedinceramicinsulatorsandlocatedinaninsulated heavy gauge galvanized steel housing . All elementsshallterminateinamachinestakedstainlesssteelterminalsecuredwithstainlesssteelhardwareforcorrosion resistance. The element support bracketsshallbespacednogreater than3-1/2"oncenter.Allinternalwiringshallberatedfor105°Cminimum.
All heaters shall include overtemperature protection consisting of an automatic reset primary thermal limit andback-upsecondarythermallimit.Allheatersshallbesinglestage.
Option: Provide a manual reset secondary thermal limit .
All units with electric heat shall be providedwith anincoming line power distribution block, designated toaccept single point powerwiring capable of carrying125%ofthecalculatedloadcurrent.
Option: Devices used to energize and de-energize (switch)electricheatmustbetotallysilent.Magnetic,mercury,and/orquietrelaysand/orcontactorsarenotacceptable.
PIPING PACKAGESProvide a standard factory assembled valve pipingpackagetoconsistofa2or3-way,on/off,motorizedelectric control valve and two ball isolation valves.Control valves shall be piped normally closed to thecoil.Maximumenteringwatertemperatureonthecon-trol valve shall be 200°F, and maximum close-offpressure 25 PSIG . Maximum operating pressure shall be300PSIG.
Pipingpackagesshall includestainlesssteelbraidedhoses to allow for thermal expansion within the unitcabinet. The hose shall be EPDM inner lined andKevlar® reinforced,withstainlesssteelFNPTswivelsand/orfittings.Thehosesshallberatedforamaximum450PSIGworkingpressureat250°F,andshallconformtoNFPA90Aandcarrynomore thana25/50FlameSpreadandSmokeDevelopedRating,perASTME-84andUL723.
Option:Provide3-wirefloatingpointmodulatingcontrolvalve (fail-in-place) in lieu of standard 2-position control valvewithfactoryassembledvalvepipingpackage.
Option: Provide high pressure close-off actuators for 2-wayon/offcontrolvalves.Maximumclose-offpres-sureis50PSIG(1/2").
Option:Provideeitherafixedoradjustableflowcontroldeviceforeachpipingpackage.
Option: Provide pressure-temperature ports for each pipingpackage.
Pipingpackagesshallbecompletelyfactoryassembled,including interconnecting pipe, and mounted inside the unitinaserviceablelocationoverthecoilandprimarydrain pan .
RISERSFurnishchilledandhotwatersupplyandreturnrisersmountedtotheunit.RisersshallbeType-Mseamlesscoppertubeandincludeswagedconnectionsatthetopforconnectiontotheunitabove.Slipcouplingsarenotacceptable.
Option: Provide Type-L copper risers that meet orexceedtherequirementsstatedabove.
Risers shall be insulated with 1/2" closed cell foaminsulation covering the entire riser . Insulation shall conformtoNFPA90Aandcarrynomorethana25/50FlameSpreadandSmokeDevelopedRating,perASTME-84andUL723.
Option: Provide up to 1-1/2" thick closed cell foaminsulation that meets or exceeds the requirements statedabove.
Condensate drain risers shall be Type-M seamlesscoppertubeandmeettherequirementsstatedabove.
Option:Risersshallbefactoryfabricated,bundled,andtagged separate from the fan coil units, allowing forshipment and installation of risers prior to the fan coil units.TherisertagmustshowthecorrespondingFCUtag,floornumber,roomnumber,risernumber,CW,HW,and condensate pipe diameters. Refer to submittaldrawingonShipinAdvancerisers.
OUTSIDE AIR DAMPEROption: Provide a manual outside air damper withlockingmechanismintegraltotheunit.
Option: Provide a motorized outside air damper inte-graltotheunitandinterlockedwiththefanmotor.Thedamperactuatorshallbespringreturnclosed.
ENVIRO-TECisaregisteredtrademarkofJohnsonControls,Inc.intheUnitedStatesofAmericaandothercountries. Othertrademarksusedhereinmaybetrademarksorregisteredtrademarksofothercompanies.
Catalog: ET115 .26-EG5 (216) Supersedes ET115 .26-EG5 (415)©2016JohnsonControls,Inc.P.O.Box423,Milwaukee,WI53201PrintedinUSAwww.enviro-tec.com