Viessmann Vitodens 200 WB2 11-44 Installation Instructions Manual page 31

Installation Examples
Vitodens 200 (model WB2 11-44) with DHW storage tank, low-loss header and
multiple heating circuits with a mixing valve
TPV
PRV
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 and
Viessmann 2-wire BUS extension
module
Outdoor temperature sensor of
control unit for weather-responsive
operation
Primary pump (boiler circuit, field
supplied) with low-loss header only
*1
Vitocontrol
Mixing valve temperature sensor
*1
Contact your local Sales Representative
for details.
(continued)
AV
Y
R
Alternate locations
of expansion tank
Heating circuit pump (field supplied)
Extension kit for heating circuit with
mixing valve
Heating circuit with mixing valve
I
Extension kit for heating circuit with
mixing valve
Temperature sensor for low-loss
header
Low-loss header
DHW circulating pump (field supplied)
DHW tank temperature sensor
O
DHW storage tank
P
Expansion tank
Important!
Please note location of expansion tank
P and flow check valve R .
R
Flow check valve
IMPORTANT
P
Pumps
Vitodens 200 boiler (as illustrated).
Installation of multiple heating circuits with
DHW production and 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).
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.
Boiler Connections
and must pump into the
Max. flow rate
(GPM/ltr/h)
15.4/3500
15.4/3500
31