Carrier 48TJD Specifications Page 1

48TJ016-028Single-Package Rooftop UnitsElectric Cooling/Gas HeatingInstallation, Start-Up andService InstructionsCONTENTSPageSAFETY CONSIDERATIONS ...

INDUCED DRAFTMOTORCOMBUSTION MAIN BURNER HEAT EXCHANGERFAN HOUSING SECTION SECTIONFig. 10- Combustion Fan Housing Location3/4" FPT DRAIN 1-3/8&qu

Step 8 -- Install Gas Piping -- Unit is equipped foruse with natured gas. Installation must conform with loc_dbuilding codes or. in the absence of loc

OPTIONAL NON-FUSED DISCONNECT -- On units withthe optiomfl non-fused disconnect, incoming power will bewired into the disconnect switch. Refer to Fig.

Table 5 -- Electrical DataUNIT48TJ016(15 Tons)020(18 Tons)O24(20 Tons)028(28 Tons)NOMINAL VOLTAGE COMPRESSOROFMVOLTAGE RANGE No. 1 No, 2(3Ph, 60Hz) Mi

Step 10 -- Make Outdoor-Air Inlet Adjust-mentsMANUAL OUTDOOR-AIR DAMPER -- All units (exceptthose equipped with a factory-inst_dled economizer) have a

Step 12 -- Install All Accessories-- Install allfield-installed accessories. Refer to the accessoly installationinstructions included with each access

MOTORMASTER® V CONTROL INSTALLATION(48TJ024,028 UNITS)Install Field-Fabricated Wind Baflles -- Wind baflles mustbe field-fabricated for all units to e

Step 13 --Adjust Factory-Installed OptionsPREMIERLINK TM CONTROL -- The PrelnierLink control-ler is available as a special order from the facto U and

SATGRNWHTBLU_] BLUE(_ BRN(_ BLKBRNi ORNBRN • BRNVlO • VlO[_ BRNOAT PNKREDBRNBLUGRNYELBLUREDREDRED_LuRRNBLKCOMBRN CO_'_w• _BRN COMRED _COMDDCCONF{

Table 8 -- PremierLink TM Sensor UsageOUTDOOR AIR RETURN AIR OUTDOOR AIR RETURN AIRAPPLICATION TEMPERATURE SENSOR TEMPERATURE SENSOR ENTHALPY SENSOR E

INSTALLATIONInspect unit for transportation dmnage. If &_mage is found,file claim with transportation agency.Step 1 -- Provide Unit SupportROOF CU

ThermistorfSensorFig. 26 -- Enthalpy SwitchlReceiver Dimensions(33CSENTHSW)Thermistor _ S Humidi_ SensorIFig. 27 -- Enthalpy Sensor Dimensions(33CSENT

DIFFERENTIAL ENTHALPY CONTROL (Fig. 29) --Diffemntifd enthalpy control mquiles both fin enthalpy switch/receiver (33CSENTHSW) and fin enthalpy sensor(

Enthalpy Sensor Jumper Settings -- There me two jumpers.One julnper determines the mode of the enthalpy sensor. Theother jumper is not used. To access

OPTIONAL ECONOMISERIV AND ECONOMISER2 --See Fig. 32 and 33 for EconoMiSerIV component locations.See Fig. 34 for EconoMi$er2 component locations.NOTE:

L1 _4L1 -S- (NOT BSEDIL1-9mPLI _8TO MAIN PLI _5CONTROL /_ IBOX PL1-6PLI-II1PLI*IPLI _RPL1-10(NOT USED)LEGENDDCV -- Demand Controlled VentilationIAQ --

ECONOMISERIV STANDARD SENSORSOutdoor Air Temperature (OAT) Sensor -- The outdoor airtemperature sensor (HH57AC074) is a 10 to 20 mA deviceused to meas

19181716-15<E14131211lO940ILED ON-- - LED OFF45 50 55_ED ONLED O;_< LED ON-- --"t,4I LED OFF{65 70 75 80 85 90 95 100DEGREES FAHRENHEITFig.

CONTROL CONTROL POINTCURVE APPROX. °F (°C)AT 50% RHA 73 (23)B 70 (21)C 67/19)D 63 (17)85 90 95 100 105 110(29) (32) (35) (38) (41) (43)\1 /I \XI IX _3

2. Disconnect the supply-air sensor from termimds T andTI.3. Ensure that file factory-installed jumper is in place acrossterminals P and PI. If remote

Table 13 -- 002 Sensor Standard SettingsANALOGOUTPUTSETTING12345678EQUIPMENTInterface with StandardBuilding Control SystemEconomizerHealth & Safet

CURBPKG. NO. REF. HEIGHTCRRFCURBOIOAO0 1"- 2" (305)CRRFCURBO11AO0 2'- 0" (610)CRRFCURBO12AO0 2'- 0" (610)DESCRIPTIONStan

MOISTUREMI$ER_-_YEL-BLK?-_ BLK_YELTRANt 2_4_GRN-YELLEGENDCB -- Circuit BreakerLLSV -- Liquid Line Solenoid ValveLPS -- Low-Pressure SwitchTB -- Termin

CONDENSER COiL ,SUCTIONl DISCHARGEF CCHCRANKCASEHEATEROUTDOOR AiREVAPORATORCOILS-LPS JSUB COOLERCONTROLLOW PRESSURESWITCHTXVSUBCOOLER /COILEQUALIZERLI

AIRFLOW(cfm)45004800510054005700600063006600690072007500Table 14 -- Fan Performance -- 48TJD016 (Low Heat Units)AVAILABLE EXTERNAL STATIC PRESSURE (in

Table 16 -- Fan Performance -- 48TJD028 (Low Heat Units)AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)AIRFLOW(cfrn) 0.2 0.4 0.6 0.8 1.0 1.2Rpm Bhp Watts

Table 18 -- Fan Performance- 48TJF020 and 024 (High Heat Units)AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)AIRFLOW(cfm) 0.2 0.4 0.6 0.8 1.0 1.2Rpm Bhp

UNIT48TJ016020024028Table 20 -- Air Quantity LimitsMINIMUMCOOLINGCFM4500540060007000MINIMUMHEATING CFMLow Heat High Heat3800 38004750 54504750 5450475

UNIT UNIT48TJ VOLTAG E208/230016 460575208/230020 460575208/230024 460575208/230028 460575LEGENDBHP -- Brake HorsepowerBkW -- Brake KilowattsTable 25

Above50Fsupply-airtemperature,thedmnperswillmodu-latefrom100%opentotheminimumopenposition.From50Fto 45F supply-airtemperature,the&tmperswill maint

intothezone.Thesupplyairwillmaintainthespacetempera-turebetweentheheatingandcoolingsetpointsasindicatedinFig.47.ThePremierLinkTM will integrate the co

SERVICEBefore performing service or maintenance operations onunit, turn off main power switch to unit and install lockouttag on disconnect switch. Ele

I0'-0"(3048),SPREADERBARS "DETAIL A"_ _RIGGINGHOOK3'-7 112"(t t 05)UNIT BASE RAILSEE"DETAIL A'NOTES:1. Dimensi

10. Ensure surfaces are not allowed to &y before rinsing.Reapplying cleaner as needed to ensure 10-minute satura-tion is achieved.11. Thoroughly r

Evaporator Fan Service and Replacement48TJ016 UNITS (See Fig. 51 )NOTE: To lemove belts only. follow Steps 1-6.1. Remove filter and supply-air section

9. Slide out the motor and motor mounting plate.10. Disconnect wiring connections and remove the 4 mount-ing bolts.11. Remove the motol:12. To inst;dl

Gas Valve AdjustmentNATURAL GAS- The gas valve ()pens and closes in re-sponse to the thermostat or limit control.When power is supplied to valve termi

Optional Hinged Access Doors --When the optionalservice package is ordered or the if the hinged access doorsoption is ordered, the unit will be provid

A_TOIII-k_:,°AUTOSCHEMATICL_ B _ CAP_CAP2gff__ gg£ OrMZo___ __ % -- -- ORN_.._ ,<]D4 i ...[ 12® - ._y_4t J® _ ... ,GROUNOZO?_RU STAWO0_IFCoreIE

LEOIG¢1J2©COMPONENT ARRANGEMENTCONTROL BOX 00®@@II--_LKOFMI ,2,3_Lt,R•II..Iii ii__ iIIIIo_, --I I II.=,GAS SECTIONBtK2v _Ov[_pt p_ _x_ [ ...80Ae

LEGEND AND NOTES FOR FIG. 58 AND 59LEGENDAHA -- Adjustable, Heat Anticipator SN -- SensorBKR W/AT -- Breaks with Amp Turns TB -- Terminal BlockC -- Co

TROUBLESHOOTINGUnit Troubleshooting- Refer to Tables 27-29 andFig. 60.EconoMi$erlV Troubleshooting-- See Table 30for EconoMi$erlV logic.A limctional v

Table 27 -- Cooling Service AnalysisPROBLEM CAUSE REMEDYCompressor and Power failure. Call power company.Condenser Fan Fuse blown or circuit breaker t

STD UNIT ECONOMIZER CORNER CORNER CORNER CORNERUNIT WEIGHT WEIGHT A B C DIb kg Ib kg Ib kg Ib kg Ib kg Ib kg48TJD,TJF016 1650 748 90 41 423 192 386 17

Table 28 -- Heating Service AnalysisPROBLEM CAUSEBurners Will Not Misaligned spark electrodes.Ignite.No gas at main burners.Water in gas line.No power

I_-INDO(:W_FANI)EI.AY J___(HEATING)2 _S - OFmNING OF LIMffSWRCH3 _S - _ 81_813f1IN_CATES FLAME WITHCLOSED C:':':':':':':

Table 30 -- EconoMi$erlV Input/Output LogicDemand ControlVentilation (DCV)Below set(DCV LED Off)Above set(DCV LED On)INPUTSEnthalpy* CompressorOutdoor

Altitude compensation lOBurner spark gap 44Carrier Comfort Network@ 17Changeover set points 26Charging chart, ret_igerant 42Clearance 5, 6CO2 sensorCo

SERVICE TRAININGPackaged Service Training programs tue an excellent way to increase your knowledge of the equipmentdiscussed in this manual, including

START-UP CHECKLISTMODEL NO.: SERIAL NO.:DATE: TECHNICIAN:PRE-START-UP[] VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT[] VERIFY INSTALL

BTD UNIT ECONOMIZER CORNER CORNER CORNER CORNERUNIT WEIGHT WEIGHT A B C DIb kg Ib kg Ib kg Ib kg Ib kg Ib kg48TJD,TJF024 1850 839 90 41 443 201 406 18

Table 1 -- Physical Data016D/FUNIT 48TJ 020D/F 024D/F 028D/F208/230, 460 v I 575 vNOMINAL CAPACITY (tons) 15 18 20 25OPERATING WEIGHT (Ib) 1650 1800 1

Table 1 -- Physical Data (cont)UNIT 48TJFURNACE SECTIONRollout Switch Cutout Temp (F)tBurner Orifice Diameter (in...drill size)Natural GasThermostat

Step 3 -- Field Fabricate Ductwork -- Secure allducts to building structure. Use flexible duct connectors be-tween unit and ducts as required. Insulat