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Contents 
Contents.................................................................................................................................5 
1.  SAFETY CONSIDERATIONS........................................................................................10 
1.1.  General Description ..............................................................................................10 
1.2.  Avoid Electrocution ..............................................................................................10 
2.  GENERAL DESCRIPTION ............................................................................................11 
2.1.  General Description ..............................................................................................11 
2.2.  Abbreviations Used ..............................................................................................11 
3.  HARDWARE DESCRIPTION ........................................................................................12 
3.1.  General Description ..............................................................................................12 
3.1.1.  Main Control Board and Display .......................................................................12 
3.1.2.  ISM (Integrated Starter Module) .......................................................................15 
3.1.3.  IO Board ..........................................................................................................16 
3.2.  Sensors .................................................................................................................17 
3.3.  Controls Outputs ..................................................................................................20 
3.4.  Refrigerant Support ..............................................................................................20 
3.5.  Connections at the User’s Terminal Block...........................................................20 
3.6.  Connections at the Field terminal block ..............................................................36 
3.7.  LEN/CCN Communication Cable Requirements ..................................................36 
4.  USER INTERFACE SETTING .......................................................................................38 
4.1.  User Interface........................................................................................................38 
4.2.  General Features...................................................................................................38 
4.2.1.  Buttons ............................................................................................................38 
4.2.2.  Screens ...........................................................................................................38 
4.3.  Synoptic Screen....................................................................................................39 
4.4.  Language & Units Selection Screen.....................................................................40 
4.5.  Login Screen .........................................................................................................41 
4.6.  Chiller Start/Stop Screen ......................................................................................42 
4.6.1.  Chiller Start-up.................................................................................................42 
4.6.2.  Chiller Stop ......................................................................................................43