Carrier WEATHERMAKER 48/50AJ Operation And Service Manual
Also see for 48AJ: Installation, Start-Up and Service InstructionsInstallation instructionsStarted guideOperating and service guide
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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53480077-01 Printed in U.S.A. Form 48/50A-9T Pg 1 6-10 Replaces: 48/50A-7TControls, Start-Up, Operation,Service and TroubleshootingCONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .2GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Conventions Used in this Manual. . . . . . . . . . . . . . . . . . . .3BASIC CONTROL USAGE. . . . . . . . . . . . . . . . . . . . . . . . . . 3-6ComfortLink Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Scrolling Marquee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Accessory Navigator™ Display. . . . . . . . . . . . . . . . . . . . . .4Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4System Pilot™ Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5CCN Tables and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5• GENERICS STATUS DISPLAY TABLESTART-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Unit Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Internal Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Accessory Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Crankcase Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Evaporator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Gas Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7CONTROLS QUICK START . . . . . . . . . . . . . . . . . . . . . . 27-29Two-Stage Constant Volume Units withMechanical Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . .27Two-Stage Constant Volume Units withSpace Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27Variable Air Volume Units Using Return Air Sensoror Space Temperature Sensor . . . . . . . . . . . . . . . . . . . .28Multi-Stage Constant Volume Units withMechanical Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . .28Multi-Stage Constant Volume Units withSpace Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28Economizer Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28Indoor Air Quality Options. . . . . . . . . . . . . . . . . . . . . . . . . .29Exhaust Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29Programming Operating Schedules . . . . . . . . . . . . . . . .29SERVICE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29,30General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29Service Test Mode Logic . . . . . . . . . . . . . . . . . . . . . . . . . . .29Independent Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30Fans in Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . .30Cooling in Service Test Mode. . . . . . . . . . . . . . . . . . . . . . .30Heating in Service Test Mode. . . . . . . . . . . . . . . . . . . . . . .30THIRD PARTY CONTROL . . . . . . . . . . . . . . . . . . . . . . . . 31,32Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Alarm Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Remote Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31VFD Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Supply Air Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Demand Limit Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Demand Controlled Ventilation Control . . . . . . . . . . . . .31CONTROLS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 32-75Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32• SYSTEM MODES• HVAC MODESPageUnit Configuration Submenu . . . . . . . . . . . . . . . . . . . . . . . 35Cooling Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37• SETTING UP THE SYSTEM• MACHINE DEPENDENT CONFIGURATIONS• SET POINTS• SUPPLY AIR RESET CONFIGURATION• COOLING CONFIGURATION• COMPRESSOR SAFETIES• COMPRESSOR TIME GUARDS• COOL MODE SELECTION PROCESS• COOLING MODE DIAGNOSTIC HELP• SUMZ COOLING ALGORITHM• DEMAND LIMIT CONTROL• HEAD PRESSURE CONTROL• ECONOMIZER INTEGRATION WITHMECHANICAL COOLINGHeating Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50• SETTING UP THE SYSTEM• HEAT MODE SELECTION PROCESS• TEMPERATURE DRIVEN HEAT MODEEVALUATION• HEAT MODE DIAGNOSTIC HELP• INTEGRATED GAS CONTROL BOARD LOGIC• RELOCATE SAT SENSOR FOR HEATING INLINKAGE SYSTEMS• MORNING WARM UP• TEMPERING MODEStatic Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57• OPERATION• SETTING UP THE SYSTEM• STATIC PRESSURE RESET OPERATION• RELATED POINTSFan Status Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59• GENERAL• SETTING UP THE SYSTEM• SUPPLY FAN STATUS MONITORING LOGICDirty Filter Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60• SETTING UP THE SYSTEM• ECONOMIZER OPERATION• UNOCCUPIED ECONOMIZER FREE COOLING• ECONOMIZER OPERATION CONFIGURATION• ECONOMIZER DIAGNOSTIC HELPBuilding Pressure Control. . . . . . . . . . . . . . . . . . . . . . . . . . 63• BUILDING PRESSURE CONFIGURATION• CONSTANT VOLUME 2-STAGE CONTROLOPERATION• MULTIPLE POWER EXHAUST STAGE BUILDINGPRESSURE CONTROL OPERATION• VFD POWER EXHAUST BUILDING PRESSURECONTROLSmoke Control Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66• FIRE-SMOKE INPUTS• AIRFLOW CONTROL DURING THEFIRE-SMOKE MODES• RELEVANT ITEMSWEATHERMAKER®48/50AJ,AK,AW,AY,A2,A3,A4,A5020-060Single Package Large Rooftop Unitswith COMFORTLINK™ Version 5.x Controls |
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This manual is suitable for:
48AJ48AK48AWWEATHERMAKER 48/50AJWeatherMaker 48A2 020-060WEATHERMAKER 48A2020WEATHERMAKER 48A2025WEATHERMAKER 48A2030WEATHERMAKER 48A2035WEATHERMAKER 48A2040WEATHERMAKER 48A2050WEATHERMAKER 48A2060WeatherMaker 48A3 020-060WEATHERMAKER 48A3020WEATHERMAKER 48A3025WEATHERMAKER 48A3030WEATHERMAKER 48A3035WEATHERMAKER 48A3040WEATHERMAKER 48A3050WEATHERMAKER 48A3060WeatherMaker 48A4 020-060WeatherMaker 48A5 020-060WEATHERMAKER 48AJ020WEATHERMAKER 48AJ025WEATHERMAKER 48AJ027WEATHERMAKER 48AJ030WEATHERMAKER 48AJ035WEATHERMAKER 48AJ036WEATHERMAKER 48AJ040WEATHERMAKER 48AJ041WEATHERMAKER 48AJ050WEATHERMAKER 48AJ051WEATHERMAKER 48AJ060WEATHERMAKER 48AK020WEATHERMAKER 48AK025WEATHERMAKER 48AK027WEATHERMAKER 48AK030WEATHERMAKER 48AK035WEATHERMAKER 48AK036WEATHERMAKER 48AK040WEATHERMAKER 48AK041WEATHERMAKER 48AK050WEATHERMAKER 48AK051WEATHERMAKER 48AK060WeatherMaker 48AY 020-060WeatherMaker 50A2 020-060WEATHERMAKER 50A2020WEATHERMAKER 50A2025WEATHERMAKER 50A2030WEATHERMAKER 50A2035WEATHERMAKER 50A2040WEATHERMAKER 50A2050WEATHERMAKER 50A2060WeatherMaker 50A3 020-060WEATHERMAKER 50A3020WEATHERMAKER 50A3025WEATHERMAKER 50A3030WEATHERMAKER 50A3035WEATHERMAKER 50A3040WEATHERMAKER 50A3050WEATHERMAKER 50A3060WeatherMaker 50A4 020-060WeatherMaker 50A5 020-060WEATHERMAKER 50AJWEATHERMAKER 50AJ020WEATHERMAKER 50AJ025WEATHERMAKER 50AJ027WEATHERMAKER 50AJ030WEATHERMAKER 50AJ035WEATHERMAKER 50AJ036WEATHERMAKER 50AJ040WEATHERMAKER 50AJ041WEATHERMAKER 50AJ050WEATHERMAKER 50AJ051WEATHERMAKER 50AJ060WeatherMaker 50AK 020-060WEATHERMAKER 50AK020WEATHERMAKER 50AK025WEATHERMAKER 50AK027WEATHERMAKER 50AK030WEATHERMAKER 50AK035WEATHERMAKER 50AK036WEATHERMAKER 50AK040WEATHERMAKER 50AK041WEATHERMAKER 50AK050WEATHERMAKER 50AK051WEATHERMAKER 50AK060WeatherMaker 50AW 020-060WeatherMaker 50AY 020-060
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