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TABLE OF CONTENTS
WARRANTY ............................................................................................................................................................................................... 4
SAFETY INFORMATION ........................................................................................................................................................................... 5
General .............................................................................................................................................................................................. 5
Installation ......................................................................................................................................................................................... 5
OVERVIEW ................................................................................................................................................................................................ 6
INSTALLATION OF HARDWARE COMPONENTS ................................................................................................................................... 7
RTULink ............................................................................................................................................................................................ 7
RTULink Control Kit Thermistors ....................................................................................................................................................... 7
RTULink to RTU Wiring ..................................................................................................................................................................... 9
Thermostat (optional) ...................................................................................................................................................................... 10
Space Thermistor – Wall Mount (optional) ...................................................................................................................................... 11
Modbus Communication Wiring ....................................................................................................................................................... 13
Optional Sensors .................................................................................................................................................................................. 14
Temperature and Humidity Sensor – Wall Mount ............................................................................................................................ 14
Relative Humidity – Duct Mount (Return or Discharge) ................................................................................................................... 17
Carbon Dioxide Sensor – Duct Mount ............................................................................................................................................. 18
Current Transducer ......................................................................................................................................................................... 19
Optional Outputs .................................................................................................................................................................................. 20
Damper/Economizer (0-10VDC) ...................................................................................................................................................... 20
Powered Exhaust Coil Signal ON/OFF (24VAC) ............................................................................................................................. 21
Powered Exhaust (0-10VDC) .......................................................................................................................................................... 21
Occupied/Unoccupied Signal (24VAC) ............................................................................................................................................ 22
START-UP PROCEDURE ....................................................................................................................................................................... 23
RTULink MODES OF OPERATION ......................................................................................................................................................... 24
Full Control ...................................................................................................................................................................................... 24
Monitor Only .................................................................................................................................................................................... 24
External Mode ................................................................................................................................................................................. 24
Emergency Heat .............................................................................................................................................................................. 24
FUNCTIONALITY ..................................................................................................................................................................................... 25
Info .................................................................................................................................................................................................. 25
Configuration ................................................................................................................................................................................... 25
Faults ............................................................................................................................................................................................... 29
Reboot ............................................................................................................................................................................................. 29
Main Board HMI Menu Tree ............................................................................................................................................................ 30
Space HMI and Remote Room Sensor Installation .............................................................................................................................. 35
Space HMI Operation ........................................................................................................................................................................... 36
Accessing Menu Configurations ...................................................................................................................................................... 36
Remote (HMI) Control Panel ........................................................................................................................................................... 36
Space HMI Menu Structure .................................................................................................................................................................. 36
Space HMI Functionality ...................................................................................................................................................................... 36
User Settings ................................................................................................................................................................................... 36
Factory Settings ............................................................................................................................................................................... 37
Service ................................................................................................................................................................................................. 40
TROUBLESHOOTING ............................................................................................................................................................................. 45
Faults ................................................................................................................................................................................................... 45
COMPONENT DESCRIPTION................................................................................................................................................................. 47
Temperature Sensor – Wall Mount .................................................................................................................................................. 47
Current Sensor ................................................................................................................................................................................ 47
Temperature and Humidity Sensor – Wall Mount ............................................................................................................................ 47
Temperature and Humidity Sensor – Outdoor Mount ...................................................................................................................... 48
Carbon Dioxide Sensor – Duct Mount ............................................................................................................................................. 48
APPENDIX A ............................................................................................................................................................................................ 49
Daisy Chain Topology: ......................................................................................................................................................................... 49
Star Topology: ...................................................................................................................................................................................... 49
APPENDIX B ............................................................................................................................................................................................ 50
APPENDIX C ........................................................................................................................................................................................... 52
Fixed Dry Bulb Economizer .................................................................................................................................................................. 52
Differential Dry Bulb Economizer ......................................................................................................................................................... 53
Fixed Enthalpy Economizer ................................................................................................................................................................. 54
Differential Enthalpy Economizer ......................................................................................................................................................... 55
Start-Up and Maintenance Documentation .............................................................................................................................................. 56
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