Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48/50AJ specifications ~ ~ ~ ~ ~ ~~, To Next Page, a48-8355, Red Jumper Wire Must Be Added

Models: 48/50AJ

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RED JUMPER WIRE MUST BE ADDED

RED JUMPER WIRE MUST BE ADDED

BETWEEN R AND W1 FOR UNITS

EQUIPPED WITH HEAT IN NON-THERMOSTAT

APPLICATIONS

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Fig. 15 — Typical Main Control Box Wiring Schematic (48/50AJ,AK,AW,AY Units)

a48-8355

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Carrier 48/50AJ ~ ~ ~ ~ ~ ~~, To Next Page, a48-8355, Red Jumper Wire Must Be Added, BETWEEN R AND W1 FOR UNITS

Contents

CONTENTS Two-StageConstant Volume Units withMulti-StageConstant Volume Units with APPENDIX A — LOCAL DISPLAY TABLES . . . . CONTENTS contSAFETY CONSIDERATIONS APPENDIX D - MODE SELECTIONGENERAL BASIC CONTROL USAGETable 1 — A Series Product Line Fig. 2 — Accessory Navigator Display Fig. 1 — Scrolling MarqueeFig. 3 — System Pilot User Interface ComfortLink Display Modes START-UP AIRFLOW Table 6 — Fan Performance — 48AJ,AK036 Units Table 8 — Fan Performance — 48AJ,AK041 Units Table 10 — Fan Performance — 48AJ,AK051 Units AIRFLOW AIRFLOW Table 15 — Fan Performance — 50AJ,AK036 Units Table 17 — Fan Performance — 50AJ,AK041 Units Table 19 — Fan Performance — 50AJ,AK051 Units AIRFLOW CFM 4,000 5,000 6,000 7,000 7,500 8,000 Table 24 — Fan Performance — 48AW,AY036 Units Table 26 - Fan Performance - 48AW,AY041 Units Table 28 — Fan Performance — 48AW,AY051 Units 4.81 0.62 Table 33 — Fan Performance — 50AW,AY036 Units Table 35 — Fan Performance — 50AW,AY041 Units Table 37 - Fan Performance - 50AW,AY051 Units Table 39 — Motor Limitations CONTROLS QUICK START figure the unit, perform the following SERVICE TEST Indoor Air Quality IAQ OptionsFans in Service Test Mode — Upon entering the THIRD PARTY CONTROL Demand Controlled Ventilation Control —CONTROLS OPERATION Table 42 — Operating Modes Display Table SYSTEM MODES Operating Modes→SYS.MSystem Fig. 4 — Mode SelectionFire SmokeC.TYP = 1 VAV-RATand C.TYP = 2 VAV-SPT MAT.S = Table 43 — Unit Configuration•MAT.S = MAT.S =under Configuration→UNIT →SA.S.R Table 44 - Machine Dependent ConfigurationsTable 46 — Supply Air Reset Configuration Table 45 — SetpointsTable 47 — Cooling Configuration Fig. 6 — Recommended Minimum Cool-Down Fig. 5 — Advanced Scroll TemperatureProtection Label Time After Compressor is StoppedFig. 8 — Cool Mode Evaluation •Lo Cool Mode mechanical stages = Table 49 — 2-StageSequence — 48/50AJ,AW020-027 Table 50 — 2-StageSequence — 48/50AJ,AW030-060Table 55 — 2-StageSequence — 48/50A2,A4020-027 Table 56 — 2-StageSequence — 48/50A2,A4030-060STAGE Table 61 - Run Status Mode Trip Helper Z.MIN = Configuration→COOL→Z.GN * –10+Z.PLU = Configuration→COOL→Z.GN * 10 + R.PCT = MAT – EDT/ C.CAPTable 62 — Run Status Cool Display •MAT.S = Inputs→GEN.I→DL.S1 Inputs→GEN.I→DL.S2•MAT.S = •MAT.S =Table 63 - Demand Limit Configuration •Configuration→COOL→M.M. – Motor Master Control?Table 64 — Condenser Fan Staging EC.C.P = Setpoints→SA.LO + Inputs→RSET→SA.S.RTable 65 — Heating Configuration Fig. 9 — Heating Offsets Table 66 — Heat/Cool Set Point OffsetsError = HT.C.P – LAT Table 67 — Mode Trip Helper TableTable 68 — Staged Gas Configuration Table 69A — Staged Gas Heat — 48AJ,AK,AW,AY UnitsTable 69B — Staged Gas Heat — 48A2,A3,A4,A5 Units Table 74 — IGC LED Indicators •For all other cases, the trip point is T.V.UN Table 75 — Static Pressure Control Configuration Fan Status Monitoring Table 76 — Static Pressure Reset Related Points Table 77 - Fan Status Monitoring ConfigurationTable 78 - Dirty Filter Switch Points E.SEL = Fig. 10 — Psychrometric Chart forInputs→GEN.I→E.SW Enthalpy ControlTable 79 — Economizer Configuration Table Fig. 11 — Custom Changeover Curve ExampleC.TYP = C.TYP =C.TYP = C.TYP =Table 80 — Economizer Run Status Table Table 81 — Building Pressure Configuration Table 82 — Power Exhaust Staging BP.CF =Table 83 — Power Exhaust Staging BP.CF = RELEVANT ITEMS Fig. 12 — IAQ Control Point Configuration→IAQ→AQ.SP→D.F.ON. The fanPoint Configuration→IAQ→AQ.SP→D.F.OF. The con Fig. 13 — IAQ Response CurveIAQ Purge Configuration → IAQ → IAQ.P → IQ.PG— Table 84 - Indoor Air Quality Configuration Table 85 — Dehumidification ConfigurationTemperature Compensated Start — This logic is Carrier Comfort Network CCN System - ItTable 86 — CCN Configuration Table 87 — Alert Limit Configuration Table 88 - Sensor Trim ConfigurationDiscrete Switch Logic Configuration — The SW.LG TIME CLOCK CONFIGURATION Table 92 — Remote Switch Logic Configuration TROUBLESHOOTING Table 94 — Cooling Service Analysis Table 94 — Cooling Service Analysis cont Table 95 — Gas Heating Service Analysis Table 96 — Electric Heat Service AnalysisFig. 14 — IGC Service Analysis Logic A48-5656TEMP TEMP TEMP 48/50AJ,AK,AW,AY Units Only 48/50AJ,AK,AW,AY Units Only PRESSURE 48/50A2,A3,A4,A5 Units Only 48/50A2,A3,A4,A5 Units Only cont R.PCT = MAT - EDT/C.CAP Y.MIN = -SUB.R*0.4375Y.PLU = –ADD.R*0.4375 Z.MIN = Configuration→COOL→Z.GN * –10+ Table 105 — Auto View of Run Status Display TableTable 106 - Economizer Run Status Display Table Z.PLU = Configuration→COOL→Z.GN * 10 +Table 109 — CCN/Linkage Display Table Table 107 — Cooling Information Display TableTable 108 — Mode Trip Helper Display Table Table 110 — Compressor Run Hours Display TableTable 112 — Time Guard Display Table Table 114 — Alert and Alarm Codes Table 114 — Alert and Alarm Codes cont A051 Circuit A, Compressor 1 Stuck On Failure T092 Circuit A Suction Pressure Transducer Failure Demand Limit Select Configuration→DMD.L→DM.L.S T303 Supply Temperature Above Limit- If the supply at Configuration→UNIT→SENS→FLT.S Factory-InstalledComponents MAJOR SYSTEM COMPONENTSTO NEXT PAGE RED JUMPER WIRE MUST BE ADDED~ ~ ~ ~ ~ ~~ a48-8355a48-8355 a48-8355 A48-7294 ~ ~ ~ ~ ~ ~ ~~ ~~ ~~ ~ TO NEXT ~PAGE~~~~ a48-8356a48--8357 TO NEXT PAGE A48-7296A48-8358 a50-8228 A48-7298 TO NEXT PAGEFROM PREVIOUS PAGE a48-8360Page SW1 SW2 OR DEHUMIDIFY SWITCH a48-8361a48-8362 A48-7302 LEGEND AND NOTES FOR FIG. LEGENDFig. 26 — Main Base Board MBB A48-7811POINT Fig. 28 — Staged Gas Heat Control Board SCB A48-7707CEBD430351 Fig. 29 — Controls Expansion Board CEMCEPL130351 TESTTable 119 — Controls Expansion Board CEM Inputs Table 120 — IGC Board Inputs and OutputsFig. 30 — Scrolling Marquee Fig. 31 — VFD Wiring Table 121 — VFD Terminal DesignationsW2 G TB5 TB6Table 122 — Field Connection Terminal Strips Fig. 34 — Accessory Navigator Display Fig. 35 — CCN System Architecture Fig. 36 - Door Latch SERVICEFig. 37 - Spark Gap Adjustment Fig. 38 — Typical Gas Heating SectionFig. 39 — Gas Heat Section Details Fig. 40 — Evaporator-FanAlignment and Adjustment LubricationEvaporator-FanMotor Replacement Evaporator Fan Service and ReplacementBelt Tension Adjustment — To adjust belt tension Fig. 42 — Belt Tension AdjustmentFig. 43 — Condenser-FanAdjustment Condenser-FanAdjustmentGas Valve Adjustment Table 123 - Round Tube, Plate Fin Unit Chargea48-8401 a48-8402 25 and 27 Ton MCHX CIRCUIT A Charging Chart25 and 27 Ton MCHX CIRCUIT B Charging Chart 30 Ton MCHX CIRCUIT A Charging Chart 30 Ton MCHX CIRCUIT B Charging Chart35 Ton MCHX CIRCUIT A Charging Chart 35 Ton MCHX CIRCUIT B Charging Chart40 Ton MCHX Charging Chart 50 Ton MCHX Charging Chart60 Ton MCHX CIRCUIT A Charging Chart 60 Ton MCHX CIRCUIT B Charging ChartFig. 51 — Gas Valve Part Number EF33CW271 Fig. 52 — Main Burner RemovalAPPENDIX A — LOCAL DISPLAY TABLES MODE — RUN STATUSMODE — RUN STATUS cont APPENDIX A - LOCAL DISPLAY TABLES contMODE — SERVICE TEST MODE — TEMPERATURESMODE — SET POINTS APPENDIX A — LOCAL DISPLAY TABLES contMODE — PRESSURES MODE — INPUTSMODE - INPUTS cont MODE — CONFIGURATIONAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — OUTPUTSAPPENDIX A — LOCAL DISPLAY TABLES cont MODE - CONFIGURATION contDEFAULT ITEMAPPENDIX A — LOCAL DISPLAY TABLES cont →BP.CFAPPENDIX A — LOCAL DISPLAY TABLES cont →CCNAMODE — TIME CLOCK MODE — ALARMSAPPENDIX A — LOCAL DISPLAY TABLES cont MODE - OPERATING MODESAPPENDIX B — CCN TABLES STATUS DISPLAY TABLESAPPENDIX B - CCN TABLES cont STATUS DISPLAY TABLES contAPPENDIX B — CCN TABLES cont STATUS DISPLAY TABLES contTABLE CONFIG TABLES SET POINT TABLEAPPENDIX B — CCN TABLES cont CONFIG TABLES cont SERVICE-CONFIGTABLESAPPENDIX B — CCN TABLES cont SERVICE-CONFIGTABLES cont APPENDIX B — CCN TABLES contSERVICE-CONFIGTABLES cont APPENDIX B — CCN TABLES contAPPENDIX B — CCN TABLES cont SERVICE-CONFIGTABLES contDEFAULT TABLEMAINTENANCE DISPLAY TABLES APPENDIX B — CCN TABLES contDISPLAY NAME MAINTENANCE DISPLAY TABLES contAPPENDIX B — CCN TABLES cont RANGEMAINTENANCE DISPLAY TABLES cont APPENDIX B — CCN TABLES contTABLE MAINTENANCE DISPLAY TABLES cont APPENDIX B — CCN TABLES contTABLE TIME SCHEDULE CONFIG TABLE MAINTENANCE DISPLAY TABLES contAPPENDIX B - CCN TABLES cont Fig. A — VFD Wiring APPENDIX C - VFD INFORMATIONTable A — VFD Terminal Designations Table B — VFD Configurations APPENDIX C - VFD INFORMATION contFig. B — VFD Keypad Fig. C — Standard Display Example APPENDIX C — VFD INFORMATION contTo set the clock, perform the following procedure APPENDIX C — VFD INFORMATION contAPPENDIX C — VFD INFORMATION cont the status LED on the control panelTable C — Fault Codes APPENDIX C - VFD INFORMATION contCheck the heat sink as follows when necessary Table D — Alarm CodesTable E — Maintenance Intervals 1.Remove power from driveFrame Sizes R5 and R6 Fig. D - Main Fan Replacement Frame Sizes R1-R4Fig. E — Main Fan Replacement APPENDIX C — VFD INFORMATION contFig. F - Internal Enclosure Fan Replacement APPENDIX C — VFD INFORMATION contA48-7716 Configuration→SP→SP.CF = 1,2 and the static APPENDIX D - MODE SELECTION PROCESSFig. A — Address Rotary Switches APPENDIX E — UPC OPEN CONTROLLERFig. B — UPC Open Controller Fig. C — DIP Switches Configuring the BAS Port for BACnet MSTable A — SW3 Protocol Switch Settings for MS/TP Fig. D — Network WiringFig. E — BT485 Terminator Installation Table C — MS/TP Wiring RecommendationsAPPENDIX E - UPC OPEN CONTROLLER cont Fig. F — BACview6 Device Connection APPENDIX E — UPC OPEN CONTROLLER contConfiguring the UPC Open Controllers Prop Table E — LED Status IndicatorsAPPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST APPENDIX E — UPC OPEN CONTROLLER contNETWORK POINTS LIST cont APPENDIX E — UPC OPEN CONTROLLER contAPPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST contReturn Air Relative Humidity APPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST contBACNET APPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST contBACNET Local Machine Disable APPENDIX E — UPC OPEN CONTROLLER contNETWORK POINTS LIST cont APPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST contBACNET Multi-stageconstant volume units with INDEXInternal wiring Multi-stageconstant volume unitsPrinted in U.S.A Copyright 2010 Carrier CorporationCatalog No. Form 48/50A-9TITEM CONTROLS SET POINT AND CONFIGURATION LOGDEFAULT EXPANSIONCL-2 CL-3 CL-4 ITEM DEFAULTCL-5 EXPANSIONSTART-UP UNIT START-UPCHECKLISTPRE-START-UP ELECTRICAL