Viessmann Vitodens 200 Technical Manual page 111

System design 19
Vitodens 343 with one heating circuit with mixer and low loss header
R
P
2/K
WW
Required electrical connecting cables
2/K Number of cores/low voltage
3/230 V Number of cores/230 V~
System with regulated underfloor heating
circuit with three-way mixer.
Required equipment
Item Description
A Vitodens 343 with weather-compensated control unit
C Vitotrol 200
or
Vitotrol 300
E Temperature limiter for limiting the max. temperature of underfloor heating systems
Immersion thermostat
or
Contact thermostat
G Heating circuit pump
L Extension kit for one heating circuit with mixer plus flow temperature sensor
M Flow temperature sensor for low loss header
N Low loss header
P Solar collectors
R Collector temperature sensor
VITODENS
B C
E
A
F
2/K
2/K
2/K
2/K
3/230V
2/K
3/230V
M
M
L
~
N
KW
O
Standard defaults
The total volume flow (output) 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.
3.2 Installation examples
D
A Vitodens 343 with weather-compensated
control unit and Vitosolic 100
B Outside temperature sensor
C Vitotrol
D Underfloor heating circuit
E Max. temperature limiter
F Flow temperature sensor
G Heating circuit pump (on site)
H Regulating valve
G
H
K Three-way mixer
L Extension kit for one heating circuit with
mixer
K
M Flow temperature sensor - low loss
header
N Low loss header
O Solar cylinder
P Solar collectors
R Collector temperature sensor
KW Cold water
WW DHW
The three-way mixer provided to achieve
the low temperature level of the
underfloor heating circuit is controlled by
the extension kit for one heating circuit
with mixer.
The circulation pump integrated into the
Vitodens supplies the heating circuit up to
the low loss header.
The underfloor heating circuit is supplied
by an on-site circulation pump, which is
controlled by the extension kit.
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.
Quantity Part no.
1
1
1
1
1
1
1
1
1
1
11
System design 19
343
as per pricelist
7450 017
7179 060
7151 728
7151 729
on-site
7178 995
or
7178 996
7179 488
as per pricelist
as per pricelist
7814 617
111
3