Viessmann Vitodens 200 WB2 11-44 Installation Instructions Manual page 29

Installation Examples
Vitodens 200 (model WB2 11-44 and up) with DHW storage tank,
low-loss header, one heating circuit with mixing valve and one heating circuit without mixing valve
TPV
O
Y
AV Air vent
PRV Pressure relief valve
TPV Temperature and pressure relief
valve
Vitodens 200 gas-fired condensing
boiler with programming unit for
weather-responsive operation
Outdoor temperature sensor of
control unit for weather-responsive
operation
Remote control
Primary pump (boiler circuit, field
supplied) with low-loss header only
Underfloor heating circuit
Radiator heating circuit
Mixing valve temperature sensor
Heating circuit pump (field supplied)
H1
Heating circuit pump (field supplied)
H2
I
Extension kit for heating circuit with
mixing valve
Low-loss header
(continued)
AV
PRV
Y
R
R
Alternate locations
of expansion tank
Temperature sensor for low-loss
header
DHW circulating pump (field supplied)
DHW storage tank
O
DHW tank temperature sensor
P
Expansion tank
Important!
Please note location of expansion tank
P and flow check valve R .
R
Flow check valve
Installation of different heating circuits...
H radiator heating circuit (high temperature
circuit)
H underfloor heating circuit with 3-way
mixing valve (low temperature circuit)
H DHW production
...with the following flow conditions
1. The flow rate of the heating circuits is
greater than the maximum possible water
flow rate of the Vitodens 200 boiler (see
following table).
~
H1
M
I
P
Model No.
Vitodens 200,
WB2 11-44
WB2 15-60
The use of a low-loss header is therefore
recommended.
A low-loss header is available as accessory
part.
The radiator heating circuit is supplied by a
circulation pump (field supplied).
The underfloor heating circuit is supplied by
a circulation pump installed on site which is
controlled by the extension kit.
The DHW circulation pump is field supplied.
IMPORTANT
Pumps
Vitodens 200 boiler (as illustrated).
Boiler Connections
H2
Max. flow rate
(GPM/ltr/h)
15.4/3500
15.4/3500
and must pump into the
29