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Carrier 48/50AJ specifications IGC Service Analysis Logic, A48-5656

Models: 48/50AJ

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A48-5656

LEGEND

IDM — Induced-Draft Motor

IGC — Integrated Gas Unit Controller

NOTE: Thermostat Fan Switch in the “AUTO” position.

A48-5656

Fig. 14 — IGC Service Analysis Logic

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Image 81

Carrier 48/50AJ specifications IGC Service Analysis Logic, A48-5656

Contents

CONTENTS Two-StageConstant Volume Units withMulti-StageConstant Volume Units with SAFETY CONSIDERATIONS CONTENTS contAPPENDIX A — LOCAL DISPLAY TABLES . . . . APPENDIX D - MODE SELECTIONGENERAL BASIC CONTROL USAGETable 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 TableFire Fig. 4 — Mode SelectionSystem SmokeC.TYP = 1 VAV-RATand C.TYP = 2 VAV-SPT •MAT.S = Table 43 — Unit Configuration•MAT.S = MAT.S =under Configuration→UNIT Table 46 — Supply Air Reset Configuration Table 44 - Machine Dependent Configurations→SA.S.R Table 45 — SetpointsTable 47 — Cooling Configuration Protection Label Fig. 5 — Advanced Scroll TemperatureFig. 6 — Recommended Minimum Cool-Down Time After Compressor is StoppedFig. 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 Z.PLU = Configuration→COOL→Z.GN * 10 + Z.MIN = Configuration→COOL→Z.GN * –10+Table 61 - Run Status Mode Trip Helper 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 =•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 76 — Static Pressure Reset Related Points Table 77 - Fan Status Monitoring ConfigurationTable 78 - Dirty Filter Switch Points Inputs→GEN.I→E.SW Fig. 10 — Psychrometric Chart forE.SEL = Enthalpy ControlFig. 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 Point Configuration→IAQ→AQ.SP→D.F.OF. The con Point Configuration→IAQ→AQ.SP→D.F.ON. The fanFig. 12 — IAQ Control Fig. 13 — IAQ Response CurveIAQ 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 R.PCT = MAT - EDT/C.CAP Y.MIN = -SUB.R*0.4375Y.PLU = –ADD.R*0.4375 Table 106 - Economizer Run Status Display Table Table 105 — Auto View of Run Status Display TableZ.MIN = Configuration→COOL→Z.GN * –10+ Z.PLU = Configuration→COOL→Z.GN * 10 +Table 108 — Mode Trip Helper Display Table Table 107 — Cooling Information 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 MAJOR SYSTEM COMPONENTS Factory-InstalledComponents~ ~ ~ ~ ~ ~~ RED JUMPER WIRE MUST BE ADDEDTO NEXT PAGE a48-8355a48-8355 a48-8355 ~ ~~ ~ ~ ~ ~ ~ ~ ~~ ~A48-7294 ~ TO NEXT ~PAGEa48-8356 ~~~~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 SCBCEPL130351 Fig. 29 — Controls Expansion Board CEMCEBD430351 TESTTable 119 — Controls Expansion Board CEM Inputs Table 120 — IGC Board Inputs and OutputsFig. 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. 37 - Spark Gap Adjustment SERVICEFig. 36 — Door Latch Fig. 38 — Typical Gas Heating SectionFig. 39 — Gas Heat Section Details Lubrication Fig. 40 — Evaporator-FanAlignment and AdjustmentBelt Tension Adjustment — To adjust belt tension Evaporator Fan Service and ReplacementEvaporator-FanMotor Replacement Fig. 42 — Belt Tension AdjustmentGas Valve Adjustment Condenser-FanAdjustmentFig. 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 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 — SERVICE TEST APPENDIX A - LOCAL DISPLAY TABLES contMODE — TEMPERATURES MODE — RUN STATUS contMODE — PRESSURES APPENDIX A — LOCAL DISPLAY TABLES contMODE — SET POINTS MODE — INPUTSAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — CONFIGURATIONMODE — INPUTS cont MODE — OUTPUTSDEFAULT MODE - CONFIGURATION contAPPENDIX A — LOCAL DISPLAY TABLES cont ITEM→BP.CF APPENDIX A — LOCAL DISPLAY TABLES cont→CCNA APPENDIX A — LOCAL DISPLAY TABLES contAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — ALARMSMODE — TIME CLOCK MODE - OPERATING MODESSTATUS DISPLAY TABLES APPENDIX B — CCN TABLESSTATUS DISPLAY TABLES cont APPENDIX B - CCN 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 APPENDIX B — CCN TABLES cont SERVICE-CONFIGTABLES contSERVICE-CONFIGTABLES cont APPENDIX B — CCN TABLES contTABLE DEFAULT SERVICE-CONFIGTABLES contAPPENDIX B — CCN TABLES cont TABLEAPPENDIX B — CCN TABLES cont MAINTENANCE DISPLAY TABLESAPPENDIX B — CCN TABLES cont MAINTENANCE DISPLAY 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 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 CodesTable E — Maintenance Intervals Table D — Alarm CodesCheck the heat sink as follows when necessary 1.Remove power from driveFig. E — Main Fan Replacement Fig. D - Main Fan Replacement Frame Sizes R1-R4Frame Sizes R5 and R6 APPENDIX C — VFD INFORMATION contFig. F - Internal Enclosure Fan Replacement APPENDIX C — VFD INFORMATION contA48-7716 APPENDIX D — MODE SELECTION PROCESS Configuration→SP→SP.CF = 1,2 and the staticFig. A — Address Rotary Switches APPENDIX E — UPC OPEN CONTROLLERFig. B — UPC Open Controller Table A — SW3 Protocol Switch Settings for MS/TP Configuring the BAS Port for BACnet MSFig. C — DIP Switches Fig. D — Network WiringFig. E — BT485 Terminator Installation Table C — MS/TP Wiring RecommendationsAPPENDIX E — UPC OPEN CONTROLLER cont APPENDIX E — UPC OPEN CONTROLLER cont Fig. F — BACview6 Device ConnectionConfiguring the UPC Open Controllers Prop Table E — LED Status IndicatorsAPPENDIX E — UPC OPEN CONTROLLER cont APPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LISTAPPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST 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 Internal wiring INDEXMulti-stageconstant volume units with Multi-stageconstant volume unitsCatalog No. Copyright 2010 Carrier CorporationPrinted in U.S.A Form 48/50A-9TDEFAULT CONTROLS SET POINT AND CONFIGURATION LOGITEM EXPANSIONCL-2 CL-3 CL-4 CL-5 DEFAULTITEM EXPANSIONPRE-START-UP UNIT START-UPCHECKLISTTEMPERATURES START-UP