Control Units 5.1 Vitotronic 100, Type Hc1B, For Constant Temperature Operation - Viessmann VITODENS 200-W Type B2HA Technical Manual

Design information
Incorrect usage or operation of the appliance (e.g. the appliance
being opened by the system user) is prohibited and will result in an
exclusion of liability. Incorrect usage also occurs if the components
in the heating system are modified from their intended use (e.g. if the
flue gas and ventilation air paths are sealed).
Control units
5.1 Vitotronic 100, type HC1B, for constant temperature operation
Structure and functions
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
4 8
s A
Programming unit:
■ Easy operation through display with large font and depiction with
good contrast
■ Removable programming unit; can be mounted as option on the
wall with separate accessory
■ Menu prompts through pictograms
■ Operating keys for:
– Navigation
– Confirmation
– Settings/menu
■ Settings:
– Boiler water temperature
– DHW temperature
– Operating program
– Codes
– Actuator tests
– Test mode
■ Displaying:
– Boiler water temperature
– DHW temperature
– Operating data
– Diagnostic details
– Fault messages
Functions
■ Electronic boiler control unit for operation at a constant boiler
water temperature
■ Room temperature-dependent operation requires a Vitotrol 100,
type UTA, UTDB or UTDB-RF (according to EnEV [Germany])
VITODENS 200-W
(cont.)
°C
■ Frost protection monitoring for the heating system
■ Pump anti-seizing protection
■ Integral diagnostic system
■ Cylinder temperature controller with priority control
■ Control of solar DHW heating and central heating backup in con-
junction with solar control module, type SM1
■ Auxiliary function for DHW heating (short term heating to a higher
temperature)
■ Service indicator
■ External starting and blocking (in conjunction with EA1 extension)
■ Connection of the circulation pump for cylinder heating on the
main PCB
Control characteristics
PI characteristics with modulating output.
Setting the heating programs
The heating system frost protection (see frost protection function)
applies to all heating programs.
The following heating programs can be selected:
■ Heating and DHW
■ Only DHW
■ Standby mode
Frost protection function
The frost protection function is active in all heating programs.
The burner is switched ON at a boiler water temperature of 5 ºC and
will be switched OFF again at a boiler water temperature of 20 ºC.
The circulation pump will be switched ON simultaneously with the
burner and switched OFF after a delay.
The DHW cylinder will be heated to approx. 20 ºC.
To protect the system against frost, the circulation pump may be
started at certain intervals (up to 24 times per day) for periods of
approx. 10 minutes.
Summer mode
Operating program "w"
The burner starts only when the DHW cylinder needs to be heated
up.
Boiler water temperature sensor
The boiler water temperature sensor is connected to the control unit
and built into the boiler.
Specification
Sensor type Viessmann NTC 10 kΩ at 25 °C
Permissible ambient temperature
– Operation 0 to +130 °C
– Storage and transport –20 to +70 °C
Cylinder temperature sensor
The standard delivery includes the DHW cylinder connection set.
Specification
Lead length
IP rating
3.75 m, fully wired
IP 32
VIESMANN
77
5