Viessmann VITOCROSSAL 300 Installation Instructions Manual page 5

Vitocrossal 300 CU3A 26 to 57 Installation
Control Connections
Installation Examples
Additional Information
Accessing the Control Electrical Connections Box.........24
External Cable Connection.........................................24
Temperature Sensors Overview..................................26
Accessing the X3 Plug..............................................27
Connecting the Outdoor Temperature Sensor..............27
Connecting the Low-loss Header Sensor.....................28
Connecting the DHW Sensor....................................28
Installing the LON Communication Module..................30
Connections............................................................31
External accessory connection.................................31
Routing power/pump accessory cables.....................32
Accessory kit for heating circuit with mixing
valve connections..................................................32
Multi connection....................................................35
Pump connection...................................................36
Pump modulation connection...................................37
Boiler power supply connection................................38
Fitting the Top Panels................................................39
Fitting the Front Panels..............................................39
General...................................................................40
Clearances............................................................40
System Layout 1.....................................................41
System Layout 2.....................................................42
System Layout 3.....................................................43
System Layout 4.....................................................44
System Layout 5.....................................................45
System Layout 6.....................................................46
System Layout 7.....................................................47
Boiler in Heating and Cooling......................................48
Boiler with Low Water Cut-off....................................49
Venting Connection...................................................49
Technical Data.........................................................50
Electrical Connections..............................................52
Power supply connection of accessories...................54
Commissioning and Adjustment................................54
Lighting and Operating Instructions.............................55
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