Installation, Operation, and Maintenance - Trane

1 BCXC-SVX01A-ENInstallation, Operation, and MaintenanceSeptember 2002 Blower Coil Air HandlerAir Terminal Devices400 to 3000 cfmModels BCHC and BCVC AO and later design sequence 2002 American Standard This ManualLiterature Change HistoryUse this manual for commercial blowercoil models BCHC and BCVC. This is thefirst version of this manual. This manualsupercedes BCXB-SVX01B-EN, whichwas for the previous models BCHB andBCVB. It provides specific Installation, operation, and Maintenance instructionsfor AO and later design BCHC/BCVC include the followingdesign changes that differ from theBCHB/BCVB: standard and high-capacity hydroniccooling & heating coils DX coils steam preheat coil stainless steel drain pan option bottom/top filter access box 1/2 , 1 , or 1 1/4 piping packagesFor previous design sequence informa-tion, contact your local Trane and CautionsWarnings and cautions appear atappropriate sections throughout thismanual.

2 Read these carefully. WARNINGI ndicates a potentially hazardoussituation, which can result in death orserious injury if not a potentially hazardoussituation which, if not avoided, mayresult in minor or moderate injury. Itmay also be used to alert againstunsafe a situation that may result inequipment or Warnings and Cautions WARNINGH azardous Voltage!Before servicing unit disconnect allelectrical power including remotedisconnects. Follow proper lockout/tagout procedures to ensure powercannot be inadvertently to disconnect power beforeservicing can cause death or copper conductors only!Unit terminals are not designed toaccept other conductor types. Failure touse copper conductors may causeequipment Note on RefrigerationEmissionsWorld environmental scientists haveconcluded that ozone in our upperatmosphere is being reduced due to therelease of CFC fully urges all HVAC servicepersonnel to make every effort toprevent any refrigerant emissions whileinstalling, operating, or servicingequipment.

3 Always conserverefrigerants for continued use and followall warnings and cautions in this HVAC AcronymsFor convenience, a number of acronymsand abbreviations are used throughoutthis manual. These acronyms arealphabetically listed and defined = Building automation systemscfm = Cubic-feet-per-minuteewt = entering water temperatureF/A = Fresh airHVAC = Heating, ventilation and airconditioningI/O = Inputs/outputsIOM= Installation, operation, andmaintenace manualLH = Left-handO/A = Outside airR/A = Return airRH = Right-handrpm = Revolutions-per-minuteS/A = Supply = Water columnZSM = Zone sensor moduleBXCB-SVX01B-EN3 ContentsCross reference to related publications/information for blower coil units with TracerZN controls: Installation, Operation, and Programming Guide for Tracer ZN010 and ZN510 UnitControllers, CNT-IOP-1 Installation, Operation, and Programming Guide for Tracer ZN520 Unit Controller,CNT-SVX04A-EN Blower Coil Air Handler Catalog, 2 General 7 9 Mechanical 16 Electrical 27 Operation.

4 29 General 29 Sequence of 43 Maintenance 51 Typical Wiring 584 BCXC-SVX01A-ENFigure I-GI-1. Blower coil air handler unit components. Model BCHC, horizontal unit, is Coil GeneralInformationBlower coil units are draw-thru airhandlers for cooling load conditions of400-3000 cfm. Units are available ineither horizontal (model BCHC) or vertical(model BCVC) configurations. Horizontalunits are typically ceiling suspended viathreaded rods. Knockouts are provided inall four corners to pass the rods throughthe unit. Horizontal units can also be floormounted. Vertical units are typically floormounted. They have a side inlet for easyduct connection, and do not require a fieldfabricated inlet plenum. Vertical units shipin two pieces and can be set up in either apre-swirl or counter-swirl unit components consist of a watercoil, condensate drain pan, filter, ductcollars, one fan wheel, and motor withdrive.

5 See Figure GD-1. Drive compo-nents consist of sheaves, belt , and coil, drain pan, and motor/driveassembly can easily be field-convertedfrom right hand to left hand configura-tions or vice , four, or six-row main coils areavailable for either hydronic cooling orheating. Four or six-row direct expansion(DX) coils are also available for optional one, two, four, or six-rowheating coil is available factory-installedin either the preheat or reheat , a one-row preheat steam units have an internal flat filter framefor one or two-inch filters. An optionalangle filter box (two inch only), mixingbox, bottom/top filter access box, orcombination angle filter mixing box addition, all units are available witheither a basic or deluxe piping packageoption that includes a variety of controlvalve sizes in two or three-way configura-tions. The basic package consists of acontrol valve and stop (ball) valves. Thedeluxe package consists of a controlvalve, a stop (ball) valve, a circuit setter,and motors range from 1/3 to 3horsepower in a wide range of motors have internal thermal andcurrent overloads, permanently sealedball bearings, and a resilient cradle mountto reduce noise and vibration pitch sheave drive kit optionshelp make it possible to more accuratelyselect design static pressure.

6 For addi-tional flexibility, 115 volt single phase, twospeed motors are : Sheaves are factory set in themiddle of the adjustment ofsheaves, motor, and belt are required toarrive at desired rpm. Refer to theoriginal sales order and Table GD-1 fordrive may have no controls (4 x 4 junctionbox) or any of four different control types:1. control interface2. Tracer ZN0103. Tracer ZN5104. Tracer ZN520 All control options are factoryinstalledand , four, or six rowmain coil with coppertubes and enhancedaluminum finsInternal filter frameaccomodates one ortwo inch filtersGalvanized steelcabinet in 14, 18, 22,and 28 inch heightsUnit sizes 12, 18, 24, 36,54, 72, and 90 MBhKnockouts in all fourcorners for hangerrodsAngle filter optionand/or mixing boxaccomodates 2 inch filtersInternal one or two row auxiliary coil inpreheat or reheatpositionMain and auxiliarydrain connections onsame side of unit1/4 to 3 hp motor withdrive selections from400 to 1800 rpmControl boxForward curved fanBCXC-SVX01A-EN5 Digits 1 thru 4 Unit ModelBCHC = horizontal blower coilBCVC = vertical blower coilDigits 5 thru 7 Unit Size012024054018036072090 Digit 8 Unit VoltageA = 115/60/1H = 575/60/3B = 208/60/1J = 220/50/1C = 230/60/1K = 240/50/1D = 277/60/1L = 380/50/3E = 208/60/3M = 415/50/3F = 230/60/3N = 190/50/3G = 460/60/3P = 2-speed, 115/60/10 = no motor, ctrls, elec 9 Insulation Type1 = 1 matt faced2 = 1 foil facedDigits 10 & 11 Design SequenceA0 = ADigit 12 Motor, Drive, & Control BoxLocationA = same side as coil connections.

7 Horizontal or counterswirl onlyB = opposite side from coil connections,horizontal or counterswirl onlyC = same side as coil connections, pre-swirlonlyD = opposite side from coil connections,pre-swirl onlyR = right-hand accessL = left-hand accessDigit 13 Drain Pan Type, Coil & DrainConnection Side0 = none1 = polymer drain pan & right-handconnections2 = polymer drain pan & left-handconnections3 = stainless steel drain pan & right-handconnections4 = stainless steel drain pan & left-handconnectionsDigit 14 Unit Coil #1** all coils are hydronic unless statedotherwise0 = noneA = 1-row heating BC H C 012 1 C A0 A 1 G A 2 B 0 000 0 0 2 C 3 B A 2 2 B 2 0 5 R A 0 1 1 0 1 5 10 15 20 25 30 35 40 Blower Coil Model Number DescriptionFollowing is a complete description of the blower coil model number.

8 Each digit in the model number has a corresponding codethat identifies specific unit = 2-row heatingC = 4-row heatingD = 6-row heatingE = 2-row coolingF = 4-row coolingG = 6-row coolingH = 2-row heating/cooling withautochangeoverJ = 4-row heating/cooling withautochangeoverK = 6-row heating/cooling withautochangeoverL = 2-row high-capacity coolingM = 4-row high-capacity coolingN = 6-row high-capacity coolingP= 2-row heating/high-capacity coolingwith autochangeoverR = 4-row heating/high-capacity coolingwith autochangeoverT= 6-row heating/high-capacity coolingwith autochangeoverU = 4-row DX, 3/16 distributorV = 6-row DX, 3/16 distributorW = 4-row DX, 1/4 distributorX = 6-row DX, 1/4 distributorDigit 15 Unit Coil #2** all coils are hydronic unless statedotherwise0 = noneA = 1-row heatingB = 2-row heatingC = 4-row heatingD = 6-row heatingE = 2-row coolingF = 4-row coolingG = 6-row coolingH = 2-row heating/cooling withautochangeoverJ = 4-row heating/cooling withautochangeoverK = 6-row heating/cooling withautochangeoverL = 2-row high-capacity coolingM = 4-row high-capacity coolingN = 6-row high-capacity coolingP= 2-row heating/high-capacity coolingwith autochangeoverR = 4-row heating/high-capacity coolingwith autochangeoverT= 6-row heating/high-capacity coolingwith autochangeoverU = 4-row DX, 3/16 distributorV = 6-row DX, 3/16 distributorW = 4-row DX, 1/4 distributorX = 6-row DX.

9 1/4 distributorDigit 16 Motor Horsepower0 = none4 = 1 hp1 = 1/3 hp5 = 1 1/2 hp2 = 1/2 hp6 = 2 hp3 = 3/4 hp7 = 3 hpDigit 17 Motor Drives0 = noneA = 390-552 rpm/60 hz or 323-457 rpm/50hzB = 478-678 rpm/60 hz or 396-562 rpm/50hzC = 619-878 rpm/60 hz or 513-727 rpm/50hzD = 619-878 rpm/60 hz or 513-727 rpm/50hzE = 727-1029 rpm/60 hz or 602-853 rpm/50hzF = 879-1245 rpm/60 hz or 728-1031 rpm/50hzG = 1000-1417 rpm/60 hz or 829-1174 rpm/50hzH = 1200-1700 rpm/60 hz or 995-1410 rpm/50hzJ = 1313-1859 rpm/60 hz or 1088-1541 rpm/50hzK = 1615-2288 rpm/60 hz or 1338-1896 rpm/50hzL = 678-877 rpm/60 hz or 562-727 rpm/50hzM = 765-990 rpm/60 hz or 634-820 rpm/50hzN = 878-1136 rpm/60 hz or 727-941 rpm/50hzP = 1029-1332 rpm/60 hz or 853-1104 rpm/50hzR = 1245-1611 rpm/60 hz or 1031-1335 rpm/50hzT = 1174-1519 rpm/50hzDigit 18 Electric Heat Stages0 = none1 = 1-stage2 = 2-stageDigits 19 thru 21 Electric Heat kW000 = none100 = kW010 = kW110 = kW015 = kW120 = kW020 = kW130 = kW025 = kW140 = kW030 = kW150 = kW035 = kW160 = kW040 = kW170 = kW045 = kW180 = kW050 = kW190 = kW055 = kW200 = kW060 = kW210 = kW065 = kW220 = kW070 = kW240 = kW075 = kW260 = kW080 = kW280 = kW090 = kW300 = kWInstallationGeneralInformation6 BCXC-SVX01A-ENInstallationGeneralInforma tionDigit 22 Electric Heat Controls0 = noneA = 24 volt magnetic contactorsB = 24 volt mercury contactorsDigit 23 Electric Heat Options0 = noneA = electric heat with heater fuseB = electric heat interlocking non-fuseddisconnectC = A & BDigit 24 Filters0 = noneA = 1 throwawayB = 2 pleated throwawayDigit 25 Accessory Section0 = noneA = mixing box onlyB = angle filter boxC = angle filter/mixing boxD = top access filter boxE = bottom access filterF = A & DG = A & EDigit

10 26 Control Type0 = no controls (4 x 4 junction box)1 = control interface2 = Tracer ZN0103 = Tracer ZN5104 = Tracer ZN520 Digit 27 Coil #1 Control Valve0 = noneA = 2-way, 2-position, = 2-way, 2-position, = 3-way, 2-position, = 3-way, 2-position, = 2-way modulatingF = 3-way modulatingG = field supplied valve, 2-pos., = field supplied valve, 2-pos., = field supplied modulating valveDigit 28 Coil #1 Control Valve Cv0 = noneA = Cv, 1/2 modulating, 1/2 pipeB = Cv, 1/2 modulating, 3/4 pipeC = Cv, 1/2 modulating, 3/4 pipeD = Cv, 1 modulating, 1 pipeE = Cv, 1 modulating, 1 pipeF = Cv, 11/4 modulating, 11/4 pipeG = Cv, 1/2 2-position, 1/2 pipeH = Cv, 1/2 2-position, 1/2 pipeJ = Cv, 3-way valve, 1 2-position, 1 pipe OR Cv, 2-way valve,1 2-position, 1 pipeK = Cv, 1 2-position, 1 pipeL = Cv, 1 2-position, 1 pipeM = Cv, 1 1/4 2-position, 1 1/4 pipeDigit 29 Coil #1 Piping Package0 = none1 = basic piping package2 = deluxe piping packageDigit 30 Coil #2 Control Valve0 = noneA = 2-way, 2-position, = 2-way, 2-position, = 3-way, 2-position, = 3-way, 2-position, = 2-way modulatingF = 3-way modulatingG = field supplied valve, 2-pos.