Viessmann Vitocrossal 300 Series Technical Data Manual page 9

Vitocrossal 300 CU3A 26 to 199 Technical Data
On-Board Vitotronic 200, HO1B Control
Heating circuit interface
Zone control interface
Modular structure
The control unit is integrated into the boiler. The control
unit comprises a standard unit, electronics modules and
a programming unit.
Standard unit:
ON/OFF switch
■
Optolink laptop interface
■
Operating and fault indicators
■
Reset button
■
Fuses
■
Programming unit:
Easy operation through:
■
– Plain text display with graphic ability
– Large font and black & white depiction for good
contrast
– Context-sensitive help text
– Removable programming unit; can be mounted
on the wall with separate accessory
With digital time switch
■
Control keys for:
■
– Navigation
– Confirmation
– Help and additional information
– Menu
Setting the:
■
– Room temperature
– Reduced room temperature
– DHW temperature
– Heating program
– Time programs for central heating, DHW heating
and DHW recirculation
– Economy mode
– Party mode
– Holiday program
– Heating curves
– Codes
– Actuator tests
– Test mode
Displaying the:
■
– Boiler water temperature
– DHW temperature
– Operating details
– Diagnostic details
– Fault messages
Boiler Control
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