Viessmann Vitodens 200 Technical Manual page 8

1.1 Product description
343
Vitodens 343
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The Vitodens 343 is an energy-efficient,
environmentally responsible and
advanced solution for modern heating
with condensing and solar technology in
detached houses.
The Vitodens 343 Compact Condensing
Tower offers:
energy-saving condensing technology,
powerful DHW heating through a cylinder
primary system and fully wired solar
preparation, all inside a casing with a
footprint of only 677 × 600 mm.
At the core of the Vitodens 343 lies the
new Vitodens 300 (13 kW) gas fired, wall
mounted condensing boiler with the
intelligent Lambda Pro Control
combustion controller.
Benefits at a glance
H Compact gas fired condensing boiler,
4.2 kW to 13 kW (16 kW for DHW
heating).
H Standard efficiency: up to 109 %.
H Demand-dependent heating output with
integral booster function for DHW
heating.
H Intelligent Lambda Pro Control for gas
type recognition and automatic
matching of combustion in case of
changing gas qualities and operating
conditions.
H Weather-compensated Vitotronic 200
control unit and Vitosolic 100 solar
control unit are part of the standard
delivery.
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The DHW cylinder with 250 litres capacity,
which is integrated into the Vitodens 343
and which is suitable for the integration
of a solar heating system, proves itself
through high solar coverage based on its
large cylinder capacity and the automatic
suppression of boiler heating. The 16 kW
condensing boiler booster function
ensures high levels of economy, yet
simultaneously provides excellent DHW
convenience.
The Vitodens 343 is fully wired and
prepared for solar operation, either
immediately or in the future. The solar
circuit pump and the Vitosolic 100 solar
control unit are fully fitted and ready for
operation. All functions are matched to
one another and have been factory
tested.
H Stainless steel Inox-Radial heating
surface: efficient, long-lasting and
self-cleaning.
H Extremely low emissions through
modulating MatriX gas burner
performance significantly better than
the limits set for the "Blue Angel"
certificate of environmental excellence.
H Enamelled 250 litre cylinder with solar
heat exchanger and impressed current
anode.
H Cylinder primary system with
energy-saving heating suppression in
solar mode.
Application recommendations
Through compact design and integral
DHW heating (solar cylinder), suitable for
H installation in detached and terraced
houses
H new build (e.g. pre-fabricated houses
and housing association projects):
installation in utility rooms
H modernisation projects: replacement of
instantaneous water heater, gas fired
freestanding atmospheric boilers and
oil/gas fired boilers with DHW cylinders
installed below the boiler.
H integration of a solar heating system for
DHW heating.
H Side clearances for service are no
longer required, as all components are
accessible from the front.
H Integral filling and venting function for
quicker commissioning and prevention
of air noise.
H Integral container for catching the solar
medium.
H Integral safety valve for heating circuit
and solar circuit.
VITODENS