System Layout 5 - Viessmann Vitodens 200-W Series Installation Instructions Manual

Boiler Connections
Installation Examples

System layout 5

Vitodens 200-W, WB2B with...
– DHW storage tank
– one heating circuit with mixing valve
– one heating circuit without mixing valve and with low-loss header
I
TPV
J
5
M
N
M
Fig. 27
Legend
PRV Pressure relief valve
TPV Temperature and pressure relief valve
Vitodens 200-W WB2B boiler with
Vitotronic 200, HO1 outdoor reset
control
Outdoor temperature sensor
Remote control Vitotrol 300 (optional)
Under floor heating circuit
Radiator heating circuit
Heating circuit pump
20A
Heating circuit pump
F1
Mixing valve temperature sensor
Kit for heating circuit with mixing valve
I
Domestic hot water storage tank
DHW tank temperature sensor
J
Expansion tank
Optional purge tee (field supplied)
DHW supply and return piping
DHW circulating pump sK*
O Power/Pump module
P Boiler pump sÖ*
Q DHW circulating pump sA*
R Low-loss header
34
(continued)
O
A
PRV
L
Q
K
S Viessmann temperature sensor for
low-loss header
T Flow check valve
* See pages 54 and 58.
Installation of different heating circuits...
H radiator heating circuit (high-temp. circuit)
H under floor heating circuit with 3-way
mixing valve (low-temp. circuit)
H DHW production
*
... with the following flow conditions:
The total flow rate of the two heating
circuits is greater than the maximum
possible water flow rate of the Vitodens
200-W WB2B boiler (see page 29 for
maximum water flow rate of boiler).
The use of a low-loss header is strongly
recommended. The low-loss header is
available as accessory part.
The 3-way mixing valve, built-in to achieve
the low-temperature level of the under floor
heating circuit, is controlled by an accessory
kit for a heating circuit with mixing valve.
B
1
G
C
2
T
P
H
S
5
R
D
F
IMPORTANT
Please note location of expansion tank
and flow check valve T.
IMPORTANT
DHW circulating pump Q must pump into
the Vitodens 200-W WB2B boiler (as
illustrated).
E
F1