Carrier RTU Open Controls, Start-up, Operation And Troubleshooting

Also see for RTU - OPEN: Controls, Start-Up, Operation and Troubleshooting Instructions Installation and startup guide

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53480262-01 Printed in U.S.A. Form 48-50-RTU-01T Pg 1 1-20 Replaces: 48-50LHTCQ-01TControls, Start-Up, Operation andTroubleshooting48/50FC04-07, 50FCQ, 48/50GC04-06, 50GCQ, 48/50KC04-06, 50KCQ04-06,48/50HC-4-28, 50HCQ04-12, 48/50LC04-26, 48/50TC07-30, 50TCQ07-24SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2SENSOR/ACCESSORY INSTALLATION . . . . . . . . . . 2Sensors and Accessories . . . . . . . . . . . . . . . . . . . . . 4User Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Install Analog Sensors . . . . . . . . . . . . . . . . . . . . . . . 11• SUPPLY AIR SENSOR (SAT)• OUTDOOR AIR SENSOR (OAT)• SPACE TEMPERATURE SENSOR (SPT)• SENSOR AVERAGING• CO2 SENSOR(S) (IAQ AND OAQ)• RELATIVE HUMIDITY SENSORS (SPACE OR DUCTMOUNTED)Installing Discrete Inputs . . . . . . . . . . . . . . . . . . . . . 13• COMPRESSOR SAFETY• HUMIDISTAT• SINGLE ENTHALPY (OUTDOOR ENTHALPY)• DIFFERENTIAL ENTHALPY• FIRE SHUTDOWN• FILTER STATUS• FAN STATUS• REMOTE OCCUPANCY• IGC OVERRIDECommunication Wiring-Protocols . . . . . . . . . . . . . . 15• GENERAL• I-VU BUILDING AUTOMATION SYSTEM• BACNET MS/TP• MODBUS• JOHNSON N2• LONWORKS• LOCAL ACCESSSTART-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17EcoBlue™ Fan Set Up . . . . . . . . . . . . . . . . . . . . . . . 17Additional Installation/Inspection . . . . . . . . . . . . . . 17• POWER EXHAUST RELAY POWER• SERVICE TEST• FAN TEST• HIGH SPEED FAN TEST• COMPRESSOR 1 AND COMPRESSOR 2 TEST• HEAT 1 AND HEAT 2 TEST• DEHUMIDIFICATION TEST• POWER EXHAUST TEST• ECONOMIZER TEST• VFD SPEED TESTConfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18• SETPOINT• UNIT• INPUTS• SERVICE CONFIGURATIONOPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Occupancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22• ALWAYS OCCUPIED (DEFAULT)• BACNET SCHEDULE• BAS ON/OFF• REMOTE OCC INPUTIndoor (Supply) Fan . . . . . . . . . . . . . . . . . . . . . . . . . .22• AUTO• CONTINUOUS• ALWAYS ON• FAN OFF DELAY• INDOOR (SUPPLY) FAN STATUSCooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22Supply Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Enthalpy Control . . . . . . . . . . . . . . . . . . . . . . . . . . . .24Space Air Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . .24Power Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24Pre-Occupancy Purge . . . . . . . . . . . . . . . . . . . . . . . .24Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24Indoor Air Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . .24Dehumidification . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Unoccupied Free Cooling . . . . . . . . . . . . . . . . . . . . .25Optimal Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Fire Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Compressor Safety . . . . . . . . . . . . . . . . . . . . . . . . . .25Fan Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Filter Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26Door Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26Remote Occupancy . . . . . . . . . . . . . . . . . . . . . . . . . .26Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26• LINKAGE AIR SOURCE MODESTROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .26General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26• REPLACING THE RTU OPEN CONTROLLERBATTERYThermistor Troubleshooting . . . . . . . . . . . . . . . . . . .26Software Version . . . . . . . . . . . . . . . . . . . . . . . . . . . .27Communication LED's . . . . . . . . . . . . . . . . . . . . . . . .27Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29• SAFETY CHAIN ALARM• FIRE/SMOKE SHUTDOWN ALARM• GAS VALVE ALARM• SUPPLY FAN FAILURE• SUPPLY FAN IN HAND• COMPRESSOR STATUS• SPACE TEMP SENSOR• ZS SENSOR• SUPPLY AIR TEMP SENSOR• LOCAL OAT SENSOR• OUTDOOR AIR TEMP SENSOR• SPACE RELATIVE HUMIDITY SENSORRTU OpenMulti-Protocol ControllerFactory-Installed Option