Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48/50AJ specifications a48-8355

Models: 48/50AJ

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

a48-8355

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Carrier 48/50AJ specifications a48-8355

Contents

Two-StageConstant Volume Units with CONTENTSMulti-StageConstant Volume Units with APPENDIX D - MODE SELECTION CONTENTS contSAFETY CONSIDERATIONS APPENDIX A — LOCAL DISPLAY TABLES . . . .BASIC CONTROL USAGE GENERALTable 1 — A Series Product Line Fig. 1 — Scrolling Marquee Fig. 2 — Accessory Navigator DisplayFig. 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 Indoor Air Quality IAQ Options SERVICE TESTFans in Service Test Mode — Upon entering the Demand Controlled Ventilation Control — THIRD PARTY CONTROLCONTROLS OPERATION SYSTEM MODES Operating Modes→SYS.M Table 42 — Operating Modes Display TableSmoke Fig. 4 — Mode SelectionFire SystemC.TYP = 1 VAV-RATand C.TYP = 2 VAV-SPT MAT.S = Table 43 — Unit Configuration•MAT.S = •MAT.S =under Configuration→UNIT Table 45 — Setpoints Table 44 - Machine Dependent ConfigurationsTable 46 — Supply Air Reset Configuration →SA.S.RTable 47 — Cooling Configuration Time After Compressor is Stopped Fig. 5 — Advanced Scroll TemperatureProtection Label Fig. 6 — Recommended Minimum Cool-DownFig. 8 — Cool Mode Evaluation •Lo Cool Mode mechanical stages = Table 50 — 2-StageSequence — 48/50AJ,AW030-060 Table 49 — 2-StageSequence — 48/50AJ,AW020-027Table 56 — 2-StageSequence — 48/50A2,A4030-060 Table 55 — 2-StageSequence — 48/50A2,A4020-027STAGE R.PCT = MAT – EDT/ C.CAP Z.MIN = Configuration→COOL→Z.GN * –10+Z.PLU = Configuration→COOL→Z.GN * 10 + Table 61 - Run Status Mode Trip HelperTable 62 — Run Status Cool Display •MAT.S = Inputs→GEN.I→DL.S1 Inputs→GEN.I→DL.S2•MAT.S = •MAT.S =•Configuration→COOL→M.M. – Motor Master Control? Table 63 - Demand Limit ConfigurationEC.C.P = Setpoints→SA.LO + Inputs→RSET→SA.S.R Table 64 — Condenser Fan StagingTable 65 — Heating Configuration Table 66 — Heat/Cool Set Point Offsets Fig. 9 — Heating OffsetsTable 67 — Mode Trip Helper Table Error = HT.C.P – LATTable 69A — Staged Gas Heat — 48AJ,AK,AW,AY Units Table 68 — Staged Gas ConfigurationTable 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 77 - Fan Status Monitoring Configuration Table 76 — Static Pressure Reset Related PointsTable 78 - Dirty Filter Switch Points Enthalpy Control Fig. 10 — Psychrometric Chart forInputs→GEN.I→E.SW E.SEL =Fig. 11 — Custom Changeover Curve Example Table 79 — Economizer Configuration TableC.TYP = C.TYP =C.TYP = C.TYP =Table 80 — Economizer Run Status Table Table 82 — Power Exhaust Staging BP.CF = Table 81 — Building Pressure ConfigurationTable 83 — Power Exhaust Staging BP.CF = RELEVANT ITEMS Fig. 13 — IAQ Response Curve Point Configuration→IAQ→AQ.SP→D.F.ON. The fanPoint Configuration→IAQ→AQ.SP→D.F.OF. The con Fig. 12 — IAQ ControlIAQ Purge Configuration → IAQ → IAQ.P → IQ.PG— Table 85 — Dehumidification Configuration Table 84 - Indoor Air Quality ConfigurationCarrier Comfort Network CCN System - It Temperature Compensated Start — This logic isTable 86 — CCN Configuration Table 88 - Sensor Trim Configuration Table 87 — Alert Limit 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 96 — Electric Heat Service Analysis Table 95 — Gas Heating Service AnalysisA48-5656 Fig. 14 — IGC Service Analysis LogicTEMP 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 Y.MIN = -SUB.R*0.4375 R.PCT = MAT - EDT/C.CAPY.PLU = –ADD.R*0.4375 Z.PLU = Configuration→COOL→Z.GN * 10 + Table 105 — Auto View of Run Status Display TableTable 106 - Economizer Run Status Display Table Z.MIN = Configuration→COOL→Z.GN * –10+Table 110 — Compressor Run Hours Display Table Table 107 — Cooling Information Display TableTable 108 — Mode Trip Helper Display Table Table 109 — CCN/Linkage 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 MAJOR SYSTEM COMPONENTS Factory-InstalledComponentsa48-8355 RED JUMPER WIRE MUST BE ADDED~ ~ ~ ~ ~ ~~ TO NEXT PAGEa48-8355 a48-8355 ~ TO NEXT ~PAGE ~ ~ ~ ~ ~ ~ ~~ ~~ ~~ A48-7294a48-8356 ~~~~a48--8357 A48-7296 TO NEXT PAGEA48-8358 a50-8228 TO NEXT PAGE A48-7298a48-8360 FROM PREVIOUS PAGEPage a48-8361 SW1 SW2 OR DEHUMIDIFY SWITCHa48-8362 A48-7302 LEGEND LEGEND AND NOTES FOR FIG.A48-7811 Fig. 26 — Main Base Board MBBPOINT A48-7707 Fig. 28 — Staged Gas Heat Control Board SCBTEST Fig. 29 — Controls Expansion Board CEMCEPL130351 CEBD430351Table 120 — IGC Board Inputs and Outputs Table 119 — Controls Expansion Board CEM InputsFig. 30 — Scrolling Marquee Table 121 — VFD Terminal Designations Fig. 31 — VFD WiringTB5 TB6 W2 GTable 122 — Field Connection Terminal Strips Fig. 34 — Accessory Navigator Display Fig. 35 — CCN System Architecture Fig. 38 — Typical Gas Heating Section SERVICEFig. 37 - Spark Gap Adjustment Fig. 36 — Door LatchFig. 39 — Gas Heat Section Details Lubrication Fig. 40 — Evaporator-FanAlignment and AdjustmentFig. 42 — Belt Tension Adjustment Evaporator Fan Service and ReplacementBelt Tension Adjustment — To adjust belt tension Evaporator-FanMotor ReplacementTable 123 - Round Tube, Plate Fin Unit Charge Condenser-FanAdjustmentGas Valve Adjustment Fig. 43 — Condenser-FanAdjustmenta48-8401 25 and 27 Ton MCHX CIRCUIT A Charging Chart a48-840225 and 27 Ton MCHX CIRCUIT B Charging Chart 30 Ton MCHX CIRCUIT B Charging Chart 30 Ton MCHX CIRCUIT A Charging Chart35 Ton MCHX CIRCUIT B Charging Chart 35 Ton MCHX CIRCUIT A Charging Chart50 Ton MCHX Charging Chart 40 Ton MCHX Charging Chart60 Ton MCHX CIRCUIT B Charging Chart 60 Ton MCHX CIRCUIT A Charging ChartFig. 52 — Main Burner Removal Fig. 51 — Gas Valve Part Number EF33CW271MODE — RUN STATUS APPENDIX A — LOCAL DISPLAY TABLESMODE — RUN STATUS cont APPENDIX A - LOCAL DISPLAY TABLES contMODE — SERVICE TEST MODE — TEMPERATURESMODE — INPUTS APPENDIX A — LOCAL DISPLAY TABLES contMODE — PRESSURES MODE — SET POINTSMODE — OUTPUTS MODE — CONFIGURATIONAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — INPUTS contITEM MODE - CONFIGURATION contDEFAULT APPENDIX A — LOCAL DISPLAY TABLES cont→BP.CF APPENDIX A — LOCAL DISPLAY TABLES cont→CCNA APPENDIX A — LOCAL DISPLAY TABLES contMODE - OPERATING MODES MODE — ALARMSAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — TIME CLOCKSTATUS DISPLAY TABLES APPENDIX B — CCN TABLESSTATUS DISPLAY TABLES cont APPENDIX B - CCN TABLES contSTATUS DISPLAY TABLES cont APPENDIX B — CCN TABLES contTABLE SET POINT TABLE CONFIG TABLESAPPENDIX B — CCN TABLES cont SERVICE-CONFIGTABLES CONFIG TABLES contAPPENDIX B — CCN TABLES cont APPENDIX B — CCN TABLES cont SERVICE-CONFIGTABLES contAPPENDIX B — CCN TABLES cont SERVICE-CONFIGTABLES contTABLE TABLE SERVICE-CONFIGTABLES contDEFAULT APPENDIX B — CCN TABLES contAPPENDIX B — CCN TABLES cont MAINTENANCE DISPLAY TABLESRANGE MAINTENANCE DISPLAY TABLES contAPPENDIX B — CCN TABLES cont DISPLAY NAMEAPPENDIX B — CCN TABLES cont MAINTENANCE DISPLAY TABLES contTABLE APPENDIX B — CCN TABLES cont MAINTENANCE DISPLAY TABLES contTABLE MAINTENANCE DISPLAY TABLES cont TIME SCHEDULE CONFIG TABLEAPPENDIX B - CCN TABLES cont APPENDIX C - VFD INFORMATION Fig. A — VFD WiringTable A — VFD Terminal Designations APPENDIX C — VFD INFORMATION cont Table B — VFD ConfigurationsFig. B — VFD Keypad APPENDIX C — VFD INFORMATION cont Fig. C — Standard Display ExampleAPPENDIX C — VFD INFORMATION cont To set the clock, perform the following procedurethe status LED on the control panel APPENDIX C — VFD INFORMATION contAPPENDIX C - VFD INFORMATION cont Table C — Fault Codes1.Remove power from drive Table D — Alarm CodesTable E — Maintenance Intervals Check the heat sink as follows when necessaryAPPENDIX C — VFD INFORMATION cont Fig. D - Main Fan Replacement Frame Sizes R1-R4Fig. E — Main Fan Replacement Frame Sizes R5 and R6APPENDIX C — VFD INFORMATION cont Fig. F - Internal Enclosure Fan ReplacementA48-7716 APPENDIX D — MODE SELECTION PROCESS Configuration→SP→SP.CF = 1,2 and the staticAPPENDIX E — UPC OPEN CONTROLLER Fig. A — Address Rotary SwitchesFig. B — UPC Open Controller Fig. D — Network Wiring Configuring the BAS Port for BACnet MSTable A — SW3 Protocol Switch Settings for MS/TP Fig. C — DIP SwitchesTable C — MS/TP Wiring Recommendations Fig. E — BT485 Terminator InstallationAPPENDIX E — UPC OPEN CONTROLLER cont APPENDIX E — UPC OPEN CONTROLLER cont Fig. F — BACview6 Device ConnectionTable E — LED Status Indicators Configuring the UPC Open Controllers PropAPPENDIX E — UPC OPEN CONTROLLER cont APPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LISTAPPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST contNETWORK POINTS LIST cont APPENDIX E — UPC OPEN CONTROLLER contReturn Air Relative Humidity NETWORK POINTS LIST cont APPENDIX E — UPC OPEN CONTROLLER contBACNET NETWORK POINTS LIST cont APPENDIX E — UPC OPEN CONTROLLER contBACNET APPENDIX E — UPC OPEN CONTROLLER cont Local Machine DisableNETWORK POINTS LIST cont NETWORK POINTS LIST cont APPENDIX E — UPC OPEN CONTROLLER contBACNET Multi-stageconstant volume units INDEXInternal wiring Multi-stageconstant volume units withForm 48/50A-9T Copyright 2010 Carrier CorporationCatalog No. Printed in U.S.AEXPANSION CONTROLS SET POINT AND CONFIGURATION LOGDEFAULT ITEMCL-2 CL-3 CL-4 EXPANSION DEFAULTCL-5 ITEMSTART-UP UNIT START-UPCHECKLISTPRE-START-UP TEMPERATURES