Viessmann Vitodens 200 Technical Manual page 94

3.2 Installation examples
System design 6
200
System design 6
Vitodens 200 or 300 with/without DHW heating with one heating circuit with mixer (with extension kit), one heating circuit with
mixer (with the Vitotronic 050) and low loss header
300
A
S
R
3
System with various heating systems
H regulated radiator heating circuit
H regulated underfloor heating circuit
with three-way mixer.
Note
Not suitable for gas fired combi boilers.
Required electrical connecting cables
2/K Number of cores/low voltage
3/230 V Number of cores/230 V~
94
C
2/K
LON
B
D
F
2/K 2/K
J
2/K
G
2/K
3/230V
J
2/K
H
K
M
M
~
L
O
P
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 the
Vitodens.
Boiler
Vitodens 200
Vitodens 300,
4.2 kW 13.0 kW
Vitodens 300,
6.6 kW 26.0 kW
Vitodens 300,
8.7 kW 35.0 kW
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.
A Vitodens with weather-compensated
E
B Outside temperature sensor
C Vitotrol
230V~
D Underfloor heating circuit
G
E Radiator heating circuit
2/K
F Maximum temperature limiter
J
G Flow temperature sensor
H
H Heating circuit pump (on site)
K Regulating valve
L Three-way mixer
L
M Extension kit for one heating circuit
M
N
~
N Vitotronic 050 (type HK1M)
O Flow temperature sensor for low loss
P Low loss header
R Cylinder temperature sensor
S DHW cylinder
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
Max. volume flow (type HK1M).
l/h Regulate the heating circuits with the
Vitotronic 050 (type HK3W), if more than
1 400
two heating circuits with mixer are to be
1 000
connected.
The volume flow of the underfloor
1 400 heating circuit, which is subject to
individual design criteria, is balanced by
an adjustable bypass.
1 600
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.
control unit and LON communication
module
with mixer
header
VITODENS