Viessmann Vitodens 200 Technical Manual page 93

System design 5
Vitodens 200 or 300 with/without DHW heating with one heating circuit without mixer with separate heating circuit pump and one
heating circuit with mixer and low loss header
A B
2/K
S
2/K
R
O
System with various heating systems
H unregulated radiator 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~
Required equipment
Item Description
A Vitodens 200 or 300 with weather-compensated control unit
B Internal extension H 1 (system without DHW circulation; optional connection of an external
safety valve for use with LPG)
or
internal extension H 2 (system without DHW circulation; optional connection of an interlock
for extraction equipment)
or
external extension H 1 (system with DHW circulation)
D Vitotrol 200
or
Vitotrol 300
G Temperature limiter for limiting the max. temperature of underfloor heating systems
Immersion thermostat
or
Contact thermostat
K Heating circuit pump
N Extension kit for one heating circuit with mixer plus flow temperature sensor
O Flow temperature sensor for low loss header
P Low loss header in conjunction with Modular Divicon
R Cylinder temperature sensor
S DHW cylinder
VITODENS
D
2/K
E
C
G
2/K
J
2/K
2/K
H
2/K
3/230V
J
K
L
M
N
~
M
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.
3.2 Installation examples
A Vitodens with weather-compensated
F control unit
B Internal extension H 1 or H 2 or
external extension H 1
C Outside temperature sensor
D Vitotrol
E Underfloor heating circuit
F Radiator circuit
G Maximum temperature limiter
H Flow temperature sensor
K Heating circuit pump (on site)
L Regulating valve
K
M Three-way mixer
N Extension kit for one heating circuit
with mixer
O Flow temperature sensor for low loss
header
P Low loss header
R Cylinder temperature sensor
S DHW cylinder
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 radiator heating circuit is supplied by
an on-site circulation pump (an extension
is required for control purposes).
Max. volume flow
The underfloor heating circuit is supplied
l/h
by an on-site circulation pump, which is
1 400
controlled by the extension kit.
1 000 The DHW circulation pump is connected
to the extension.
1 400
1 600
System design 5
Quantity Part no.
1 as per pricelist
1 7159 057
1 7179 144
1 7179 058
1 7450 017
1 7179 060
1 7151 728
1 7151 729
2 on-site
1 7178 995
or
7178 996
1 7179 488
1 as per pricelist
1 Standard delivery
connection set for
DHW cylinder
1 as per pricelist
93
200
300
3