8.6 Intended use
The appliance is intended solely for installation and operation in
sealed unvented heating systems that comply with EN 12828, with
due attention paid to the associated installation, service and operat-
ing instructions. It is only designed for heating up heating water that
is of potable water quality.
Intended use presupposes that a fixed installation in conjunction with
permissible, system-specific components has been carried out.
Commercial or industrial usage for a purpose other than heating the
building or DHW shall be deemed inappropriate.
Any usage beyond this must be approved by the manufacturer in
each individual case.
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 unit
9.1 Layout and functions
Control unit with 7-inch screen – modular design
The control unit is integrated into the Vitodens.
The control unit comprises electronics modules and a programming
unit:
■ HMI programming unit with 7" colour touchscreen and integral
wireless module
■ HMU electronics module:
– For connecting actuators and sensors
– For connecting accessories via PlusBus
■ BCU (burner control unit) electronics module for electronic com-
bustion control
■ Status indicator (Lightguide) for operating and fault display
The control unit can be set to the following operating modes:
■ Weather-compensated operation
An outside temperature sensor (accessories) must be connected.
■ Constant operation
Operation with constant flow temperature
■ Room temperature-dependent operation
A room temperature controller/room thermostat (accessories) must
be connected to plug 96. Only one heating circuit without mixer in
the system.
Programming unit
■ Easy operation through:
– Colour touchscreen with plain text and graphic display
– Large font and colour depiction for good contrast
– Context-sensitive help texts
■ Connectivity via:
– Integral WiFi interface
– Access point mode
– Low power radio
■ With digital time switch
■ Touchscreen for:
– Navigation
– Settings
– Confirmation
– Help and additional information
– Menu
■ Adjustment of:
– Set room temperature
– Reduced
– Standard
– Comfort
– Set DHW temperature
– One-off cylinder heat-up
– Operating programs for central heating and DHW heating
– Time programs for central heating, DHW heating and DHW cir-
culation
– Extended heating
– Holiday program
– Holiday at home
– Heating curves
– Hygiene function (increased DHW hygiene)
– Parameter
– Actuator tests
– Test mode
Design information
(cont.)
VITODENS
VIESMANN
137
5853906
9
Summary of Contents for Vitodens 200-W B2HE
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