Viessmann Vitodens 200 WB2 11-44 Installation Instructions Manual page 27

Installation Examples
Vitodens 200 (model WB2 11-44 and up) with DHW storage tank,
one heating circuit with mixing valve and system separation
TPV
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
Underfloor heating circuit
Mixing valve temperature sensor
Heating circuit pump (field supplied),
F1
located downstream of heat exchanger
Heating circuit pump (field supplied),
F2
located upstream of heat exchanger
Plate heat exchanger for system
separation
Extension kit for heating circuit with
mixing valve
I
DHW circulating pump (field supplied)
(continued)
AV
PRV
Y
I
DHW storage tank
DHW tank temperature sensor
Expansion tank
Important!
Please note location of expansion tank
and flow check valve
Flow check valve
Installation of ...
H underfloor heating circuit with 3-way
mixing valve and system separation
(low temperature circuit)
H DHW production
...with the following flow conditions
1. The flow rate of the heating circuit is less
than the maximum possible water flow rate
of the Vitodens 200 boiler (see following
table).
Model No.
Vitodens 200,
WB2 11-44
WB2 15-60
F1
~
F2
M
The use of a low-loss header is strongly
recommended if the maximum water flow
rate in the application concerned exceeds
the values shown in the preceding table, or
if the system flow rates are unknown.
. The low-loss header is available as
accessory part.
See following pages for installation
examples with a low-loss header.
Please note!
System separation is required for underfloor
heating systems employing non-oxygen
diffusion barrier tubing.
All components on the secondary side of
the heat exchanger must be made of
corrosion-resistant materials.
Max. flow rate
IMPORTANT
(GPM/ltr/h)
DHW circulation pump I must pump into
15.4/3500
the Vitodens 200 boiler (as illustrated).
15.4/3500
Boiler Connections
27