
Table of Contents
Introduction .................................................................................................................................5
1.1 About this manual...............................................................................................................5
1.2 Software version .................................................................................................................6
2 Control functions.........................................................................................................................7
2.1 Controller mode .................................................................................................................7
2.1.1 Heating.................................................................................................................7
2.1.2 Heating + Heating .................................................................................................8
2.1.3 Heating + Cooling .................................................................................................9
2.1.4 Cooling...............................................................................................................10
2.1.5 Heating/Cooling (change-over) .............................................................................11
2.1.6 Heating + Heating/Cooling (change-over)..............................................................13
2.1.7 Heating + VAV ...................................................................................................15
2.1.8 Cooling + VAV ...................................................................................................16
2.1.9 VAV ..................................................................................................................18
2.1.10 Heating + Cooling + VAV ....................................................................................18
2.2 Maximum and minimum limits for heating and cooling output..............................................20
2.3 Change-over.....................................................................................................................21
2.3.1 Change-over detection .........................................................................................22
2.4 Controller state.................................................................................................................23
2.4.1 Control behaviour ...............................................................................................24
2.4.2 Configuration settings ..........................................................................................26
2.4.3 State changes.......................................................................................................27
2.5 Fan control .......................................................................................................................30
2.5.1 EC fan control.....................................................................................................31
2.5.2 3-speed fan control ..............................................................................................33
2.5.3 Fan boost ............................................................................................................35
2.5.4 Fan ic -start.......................................................................................................37
2.5.5 Fan afterblow ......................................................................................................38
2.6 VAV control.....................................................................................................................38
2.7 Forced ventilation .............................................................................................................41
2.8 Presence detection ............................................................................................................44
2.9 Communication heartbeat .................................................................................................46
2.10 CO2control......................................................................................................................47
2.11 Extra zone control.............................................................................................................48
3 Room unit..................................................................................................................................50
3.1 Model overview and user interface description .....................................................................50
3.2 Room units without display ...............................................................................................52
3.2.1 Selecting a fan speed ............................................................................................52
3.2.2 Performing a setpoint adjustment ..........................................................................52
3.2.3 Putting the room HVAC system in a comfort/energy saving mode or increasing
the airflow ..........................................................................................................52
3.2.4 LED indications...................................................................................................52
3.3 Room units with display ....................................................................................................53
3.3.1 Selecting a fan speed ............................................................................................53
3.3.2 Performing a setpoint adjustment ..........................................................................53
3.3.3 Putting the room HVAC system in a comfort/energy saving mode or increasing
the airflow ..........................................................................................................54
3.3.4 Display indications...............................................................................................54
3.3.5 Basic controller configuration via the display ..........................................................56
3.3.6 Parameter menu access.........................................................................................56
3.3.7 Display bac ground lighting..................................................................................56
3.3.8 ED-RU-DOS functions ........................................................................................57
3.4 Communication LED........................................................................................................57
3.5 Enable or disable buttons/switch and nob ..........................................................................57
3.6 Wiring .............................................................................................................................58
3.7 Configuration settings........................................................................................................58