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TABLE OF CONTENTS
12.5.5.3 Cooling Control ..........................................................106
12.5.5.4 Economizer Control ....................................................107
12.5.6 Frost Control.................................................................107
12.5.7 Filter Monitoring ...........................................................107
12.5.8 Exhaust Fan Only Mode .................................................107
12.6 ADDING A BACNET LICENSE ..............................107
12.6.1 Obtaining a BACnet License...........................................107
12.6.2 Installing the BACnet License via Web Page ...................107
12.6.3 Installing the BACnet License via USB Drive ...................108
12.6.4 Installing the BACnet License via USB Connection .........109
12.7 MODBUS ..........................................................109
12.7.1 Modbus TCP Connection ................................................109
12.7.2 Modbus TCP Settings ....................................................109
12.7.3 Modbus RTU Settings ....................................................110
12.7.4 Modbus RTU Wiring .......................................................110
12.8 MODBUS REGISTER LIST ..................................111
12.9 MODBUS APPLICATION NOTES ..........................113
12.9.1 Turning the Unit On and OFF .......................................... 113
12.9.2 Alarms .......................................................................... 114
12.9.3 Temperature and Humidity Around the ERV .................... 114
12.9.4 Fan Control ................................................................... 115
12.9.5 Tempering Control ........................................................ 115
12.9.5.1 Determining Tempering Mode ..................................... 115
12.9.5.2 Heating Control ..........................................................116
12.9.5.3 Cooling Control ..........................................................116
12.9.5.4 Economizer Control .................................................... 117
12.9.6 Frost Control ................................................................. 117
12.9.7 Filter Monitoring ........................................................... 117
12.9.8 Exhaust Fan Only Mode ................................................. 117
13.1 RUN HOURS AND STARTS .................................118
13.2 LAST POWER LOSS ...........................................118
13.3 INTERNAL MEMORY WRITES .............................118
13.4 ALARM INITIALIZATION .....................................118
13.5 MEMORY WIPE .................................................119
13.6 COMMUNICATION TO EXPANSION MODULE ........119
14.1 UNIT START UP CONDITIONS .............................120
14.2 CHANGES MADE TO UNIT AFTER START UP .......121
15.1 TUNING PI CONTROL LOOPS .............................123
15.1.1 Proportional Constant (KP) .............................................123
15.1.2 Time Integral (Ti) ...........................................................124
15.1.3 Establish a KP Setting ...................................................125
15.1.4 Establish a Ti Setting.....................................................125
15.1.5 Verify the Combined KP and Ti Settings .........................125
15.2 TEMPERATURE SENSOR CURVE ........................128
15.3 EV450 AND HE-SERIES FULL
CONFIGURATION CODE .....................................130
15.4 LE-SERIES FULL CONFIGURATION CODE ............132
15.5 RD-SERIES FULL CONFIGURATION CODE ...........134
15.6 VFD INFORMATION ...........................................136
15.6.1 ABB VFD Information .....................................................136
15.6.1.1 ABB VFD Parameters ..................................................136
15.6.1.2 View All Parameters ...................................................136
16.5.1.3 Locking and Unlocking Parameters .............................137
15.6.1.4 RenewAire Parameter Settings ...................................138
15.6.1.5 Motor Specific VFD Parameter Settings .......................140
15.6.1.6 VFD Wiring to Controller .............................................142
15.6.2 Lenze VFD Information .................................................143
15.6.2.1 Lenze VFD Parameters ...............................................143
15.6.2.2 RenewAire Parameter Settings ...................................145
15.6.2.3 Motor Specific VFD Parameter Settings ......................146
15.6.2.4 VFD Wiring to Controller .............................................147
