Vitotronic 100, Type Hc1B, For Constant Temperature Operation - Viessmann VITODENS 242-F Technical Manual

Design information
Any usage beyond this must be approved by the manufacturer in
each individual case.
Control units

6.1 Vitotronic 100, type HC1B, for constant temperature operation

In conjunction with Vitodens 222-F.
Layout 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
s
Programming unit:
■ Easy operation through display with large font and depiction with
6
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
VIESMANN
78
(cont.)
°C
4 8
A
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).
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])
■ Heating system frost protection
■ Anti-seizing pump protection
■ Integral diagnostic system
■ Cylinder thermostat with priority
■ Control of solar DHW heating and central heating backup in con-
junction with the solar control module, type SM1
■ Auxiliary function for DHW heating (short-term heating to a higher
temperature)
■ Maintenance display
■ External starting and blocking (in conjunction with extension EA1)
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
VITODENS