System Layout 6 - Viessmann Vitodens 200-W 19 WB2B Series Installation Instructions Manual

Boiler Connections
Installation Examples

System layout 6

Vitodens 200-W, WB2B with...
– DHW storage tank
– two heating circuits with a mixing valve and low-loss header
A
Q
I
PRV
TPV
J
5
O
L
P
S
Fig. 28
Legend
AV Air vent (WB2B models 19, 26, 35)
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
Heating circuit pumps
Mixing valve temperature sensor
Accessory kit for heating circuit with
mixing valve
Vitotronic 200-H, HK1M with LON
*1
communication module
I
DHW storage tank
DHW tank temperature sensor
J
Expansion tank
Optional purge tee (field supplied) for
easier air removal
Low-loss header
Viessmann temperature sensor for
low-loss header
O DHW supply and return piping
P DHW circulating pump sK*
Q Power/Pump Module
R Boiler pump sÖ*
S DHW circulating pump sA*
34
(continued)
B
1
F
C 2
AV
T
R
G
N
5
M
O
K
T Flow check valve
* See pages 52 and 56.
Installation of different heating circuits...
H two heating circuits 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 28 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
. The second under floor heating circuit is
supplied by a field supplied circulation
controlled by an accessory kit or a
Vitotronic 200-H, HK1M mixing valve
control . If more than two heating circuits
with mixing valves are to be connected,
they can be controlled by a Vitocontrol
D F
2
E E
H
multi-boiler control. Contact your local
Viessmann Technical Sales Representative
for details.
*1
Please note location of expansion tank
and flow check valve T.
DHW circulating pump S must pump into
the Vitodens 200-W WB2B boiler (as
illustrated).
D
Requires...
-LON communication module 200-H HK1M
-Boiler LON communication module
-LON cable
-End resistors
IMPORTANT
IMPORTANT