Viessmann Vitodens 200 Technical Manual page 114

3.2 Installation examples
System design 22
343
System design 22
Vitodens 343 with one heating circuit with mixer (with extension kit), one heating circuit with mixer (with Vitotronic 050)
and low loss header
T
S
2/K
WW
3
A Vitodens 343 with
weather-compensated control unit
with LON communication module and
Vitosolic 100
B Outside temperature sensor
C Vitotrol
D Underfloor heating circuit
E Radiator heating circuit
F Maximum temperature limiter
G Flow temperature sensor
H Heating circuit pump (on site)
K Regulating valve
Required electrical connecting cables
2/K Number of cores/low voltage
3/230 V Number of cores/230 V~
System with various heating systems
H regulated radiator heating circuit
H regulated underfloor heating circuit
with three-way mixer.
114
LON
B
C
F
A
2/K G
2/K
2/K
2/K
3/230V
3/230V
O
M
~
M
P
KW
R
L Three-way mixer
M Extension kit for one heating circuit
with mixer
N Vitotronic 050 (type HK1M)
O Flow temperature sensor for low loss
header
P Low loss header
R DHW storage cylinder
S Solar collectors
T Collector temperature sensor
Standard defaults
The total volume flow of both heating
circuits less the bypass volume of the
underfloor heating circuit is greater than
the max. possible volume flow of 1 000 l/h
of the Vitodens.
Therefore, install a low loss header.
The three-way mixer provided to achieve
the low temperature level required by the
underfloor heating circuit is controlled by
the extension kit for one heating circuit
with mixer.
D
E
230V~
G
2/K
H H
K
3/230V
L L
M
~
N
KW Cold water
WW DHW
The circulation pump integrated into the
Vitodens supplies the heating circuit up to
the low loss header.
The underfloor and the radiator heating
circuits are supplied by on-site circulation
pumps, which are controlled by the
extension kit or the Vitotronic 050
(type HK1M).
Regulate the heating circuits with the
Vitotronic 050 (type HK3W), if more than
two heating circuits with mixer are to be
connected.
The volume flow of the underfloor
heating circuit, which is subject to
individual design criteria, is balanced by
an adjustable bypass.
Low loss headers are available in
conjunction with Modular Divicon or
individually as an accessory.
See Vitotec or Vitoset pricelist.
For further details regarding low loss
headers, see page 118.
VITODENS