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Carrier 48/50AJ specifications To Next Page, A48-7296

Models: 48/50AJ

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Fig. 19 — Typical Staged Gas Heat Wiring Schematic (Size 051 and 060 Units Shown)

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Carrier 48/50AJ specifications To Next Page, A48-7296

Contents

CONTENTS Two-StageConstant Volume Units withMulti-StageConstant Volume Units with CONTENTS cont SAFETY CONSIDERATIONSAPPENDIX A — LOCAL DISPLAY TABLES . . . . 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.MFig. 4 — Mode Selection FireSystem SmokeC.TYP = 1 VAV-RATand C.TYP = 2 VAV-SPT Table 43 — Unit Configuration •MAT.S =•MAT.S = MAT.S =under Configuration→UNIT Table 44 - Machine Dependent Configurations Table 46 — Supply Air Reset Configuration→SA.S.R Table 45 — SetpointsTable 47 — Cooling Configuration Fig. 5 — Advanced Scroll Temperature Protection LabelFig. 6 — Recommended Minimum Cool-Down 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 Z.MIN = Configuration→COOL→Z.GN * –10+ Z.PLU = Configuration→COOL→Z.GN * 10 +Table 61 - Run Status Mode Trip Helper R.PCT = MAT – EDT/ C.CAPTable 62 — Run Status Cool Display Inputs→GEN.I→DL.S1 Inputs→GEN.I→DL.S2 •MAT.S =•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 Fig. 10 — Psychrometric Chart for Inputs→GEN.I→E.SWE.SEL = 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 Point Configuration→IAQ→AQ.SP→D.F.ON. The fan Point Configuration→IAQ→AQ.SP→D.F.OF. The conFig. 12 — IAQ Control 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 Table 105 — Auto View of Run Status Display Table Table 106 - Economizer Run Status Display TableZ.MIN = Configuration→COOL→Z.GN * –10+ Z.PLU = Configuration→COOL→Z.GN * 10 +Table 107 — Cooling Information Display Table Table 108 — Mode Trip Helper Display TableTable 109 — CCN/Linkage 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 COMPONENTSRED JUMPER WIRE MUST BE ADDED ~ ~ ~ ~ ~ ~~TO NEXT PAGE 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 A48-7707Fig. 29 — Controls Expansion Board CEM CEPL130351CEBD430351 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 SERVICE Fig. 37 - Spark Gap AdjustmentFig. 36 — Door Latch Fig. 38 — Typical Gas Heating SectionFig. 39 — Gas Heat Section Details Fig. 40 — Evaporator-FanAlignment and Adjustment LubricationEvaporator Fan Service and Replacement Belt Tension Adjustment — To adjust belt tensionEvaporator-FanMotor Replacement Fig. 42 — Belt Tension AdjustmentCondenser-FanAdjustment Gas Valve AdjustmentFig. 43 — Condenser-FanAdjustment 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 STATUSAPPENDIX A - LOCAL DISPLAY TABLES cont MODE — SERVICE TESTMODE — TEMPERATURES MODE — RUN STATUS contAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — PRESSURESMODE — SET POINTS MODE — INPUTSMODE — CONFIGURATION APPENDIX A — LOCAL DISPLAY TABLES contMODE — INPUTS cont MODE — OUTPUTSMODE - CONFIGURATION cont DEFAULTAPPENDIX A — LOCAL DISPLAY TABLES cont ITEMAPPENDIX A — LOCAL DISPLAY TABLES cont →BP.CFAPPENDIX A — LOCAL DISPLAY TABLES cont →CCNAMODE — ALARMS APPENDIX A — LOCAL DISPLAY TABLES contMODE — TIME CLOCK 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 contTABLE SERVICE-CONFIGTABLES cont DEFAULTAPPENDIX B — CCN TABLES cont TABLEMAINTENANCE DISPLAY TABLES APPENDIX B — CCN TABLES contMAINTENANCE DISPLAY TABLES cont APPENDIX B — CCN TABLES contDISPLAY NAME 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 contTable D — Alarm Codes Table E — Maintenance IntervalsCheck the heat sink as follows when necessary 1.Remove power from driveFig. D - Main Fan Replacement Frame Sizes R1-R4 Fig. E — Main Fan ReplacementFrame Sizes R5 and R6 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 Configuring the BAS Port for BACnet MS Table A — SW3 Protocol Switch Settings for MS/TPFig. C — DIP Switches 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 INDEX Internal wiringMulti-stageconstant volume units with Multi-stageconstant volume unitsCopyright 2010 Carrier Corporation Catalog No.Printed in U.S.A Form 48/50A-9TCONTROLS SET POINT AND CONFIGURATION LOG DEFAULTITEM EXPANSIONCL-2 CL-3 CL-4 DEFAULT CL-5ITEM EXPANSIONUNIT START-UPCHECKLIST PRE-START-UPTEMPERATURES START-UP