Carrier 50PG20-28 Controls, Start-up, Operation, Service And Troubleshooting Instructions
Also see for 48PG20---28: User's information manualUser's information manualInstallation and service instructions
                                                                                                                | |
Contents
| 
48/50PG20-28Single Package Rooftop Unitswith COMFORTLINK TMControlsand PURON® (R-410A) RefrigerantControls, Start-Up, Operation, Service andTroubleshooting InstructionsCONTENTSPageSAFETY CONSIDERATIONS ............................... 2GENERAL .................................................. 2BASIC CONTROL USAGE ................................ 2-5ComfortLink TM Control ..................................... 2Scrolling Marquee ......................................... 3Accessory Navigator TM Display ............................ 3Operation .................................................. 3System Pilot TM ............................................. 4CCN Tables and Display ................................... 4Conventions Used in this Manual .......................... 4START-UP ............................................... 6-35Unit Preparation ........................................... 6Compressor Mounting ..................................... 6Refrigerant Service Ports .................................. 6Crankcase Heater(s) ....................................... 6Corn pressor Rotation ...................................... 6Internal Wiring ............................................. 6Subcooler Heat Exchanger (SHX) .......................... 6Evaporator Fan ............................................ 6Condenser Fans and Motors ............................... 6Retu m-Air Filters .......................................... 6Outdoor-Air Inlet Screens .................................. 6Gas Heat (48PC Only) ...................................... 6Orifice Change (48PC Only) ................................ 7Power Supply .............................................. 7Air Baffles ................................................. 7Accessory Installation ..................................... 7CONTROLS QUICK START ............................. 35,36Thermostat Control ....................................... 35Space Temperature Sensor Control --Direct Wired (%55 or T-56) .............................. 35Space Temperature Sensor Control -- CCN (T-58) ......... 35Space Temperature Sensor Control -- CCN Linkage ...... 35Space Humidity Control -- Humidistat .................... 35Space Humidity Control -- Thermidistat TM ................ 35Space Humidity Control -- Relative Humidity Sensor ..... 35CCN Communication ...................................... 35Accessories .............................................. 35Service Test .............................................. 35Control Configuration Checklist .......................... 36Programming Operating Schedules ....................... 36SERVICE TEST ......................................... 36-38THIRD PARTY CONTROL ............................... 38,39Thermostat ............................................... 38Humidistat ................................................ 38Humidity Sensor .......................................... 38Remote Occupancy ....................................... 38Fire Shutdown ............................................ 38Alarm Output ............................................. 38Outdoor Enthalpy ......................................... 38lAG Switch ................................................ 39IAQ Sensor ............................................... 39OAQ Sensor .............................................. 39CONTROLS OPERATION ............................... 39-52Display Configuration ..................................... 39Modes .................................................... 39Unit Configuration ........................................ 39Occupancy Determination ................................ 40Indoor Fan ................................................ 41Cooling ................................................... 41• THERMOSTAT (ONTROLPageSPA(E SENSOR CONTROLOUTDOOR FANSGas Heating (48PC Units) ................................ 42THERMOSTAT CONTROLSPA(E SENSOR ( ONTROLSUPPLY AIR TEMPERATURE (SAT) SENSORElectric Heat (50PG Units) ................................ 44THERMOSTAT CONTROLSPA(E SENSOR ( ONTROLSUPPLY AIR TEMPERATURE (SAT) SENSOREconomizer .............................................. 44THERMOSTAT CONTROLSPA(E SENSOR ( ONTROLECONOMIZER ACTUATOR ( OMMUNICATIONSE%_OC(UPIED FREE COOLINGPOWER EXHAUSTOptional Humdi-MiZer Dehumidification System ......... 45SETTING UP THE SYSTEMREHEAT MODE SELECTION PROCESSREHEAT MODE DIAGNOSTIC HELP• AIR BAFFLESindoor Air Quality ........................................ 49Temperature Compensated Start ......................... 51Carrier Comfort Network@ (CCN) Configuration .......... 5;Alarm Handling ........................................... 52TROUBLESHOOTING .................................. 52-67Complete Unit Stoppage ................................. 52Restart Procedure ........................................ 54Control Module Communication .......................... 54Alarms and Alerts ........................................ 54VIEWING AND CLEARING UNIT ALARMS• DIAGNOSTI( ALARM (ODES AND POSSIBLE (AUSESCooling Troubleshooting ................................. 57Humidi-MiZer Troubleshooting ........................... 57Economizer Troubleshooting ............................. 57Heating Troubleshooting ................................. 60Phase Loss Protection ................................... 60Thermistor Troubleshooting .............................. 61Transducer Troubleshooting ............................. 64Forcing Inputs and Outputs .............................. 64MAJOR SYSTEM COMPONENTS ...................... 67-84General ................................................... 67Main Base Board (MBB) .................................. 67Economizer Control Board (ECB) ........................ 67Integrated Gas Control (IGC) Board ...................... 67Low Voltage Terminal Strip (TB2) ......................... 67Scrolling Marquee Display ................................ 80Accessory Navigator TM Display ........................... 80Carrier Comfort Network@ Interface ...................... 8OSubcooler Heat Exchanger ............................... 80Field-Installed Accessories ............................... 82SPA(E TEMPERATURE SENSOR (T-55)SPA(E TEMPERATURE SENSOR (T-56)SPACE TEMPERATURE SENSOR (T-58)SPA(E TEMPERATURE SENSOR AVERAGINGECONOMIZERPOWER EXHAUSTTWO-POSITION DAMPERINDOOR AIR QUALITYOUTDOOR AIR QUALITYSMOKE DETE( TORSFILTER STATUSFAN STATUSManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No 04-53480028-01 Printed io U.SA Form 48/50PG-5T Pg 1 6-06 Replaces: 48/50PG-2T |
Related manuals for Carrier 48PG20---28
Carrier 48PG20 Controls, Start-up, Operation, Service And Troubleshooting Instructions
Carrier 48/50PG Series Controls, Start-up, Operation, Service And Troubleshooting Instructions
Carrier 48PG03-16 Controls, Start-up, Operation, Service And Troubleshooting Instructions
Carrier WeatherExpert 48N2 Controls, Start-up, Operation, Service And Troubleshooting Instructions
Carrier WeatherMaker 48A2020 Controls, Start-up, Operation, Service And Troubleshooting Instructions
Carrier 48/50HC04---14 Controls, Start-up, Operation And Troubleshooting Instructions
Carrier Omnizone 50BVC Installation, Start-up, Service And Controls Operation And Troubleshooting
Carrier 48HC 04-28 Controls, Start-up, Operation And Troubleshooting
Carrier 48LC Series Controls, Start-up, Operation And Troubleshooting
Carrier 48FC Series Controls, Start-up, Operation And Troubleshooting
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine