Vitodens 200-W B2HA 80 to 100, 285 to 352 Installation
5685 827 - 14
38
Boiler Connections
System Layout 6
Vitodens 200-W, B2HA with...
- DHW storage tank
- one heating circuit without a mixing valve
- two heating circuits with a mixing valve
- low-loss header
Installation of different heating circuits...
■ two heating circuits with 3-way mixing valve
(low-temp. circuit)
■ 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 B2HA boiler (see page 30 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
a mixing valve.
DHW circulating pump S must pump into the Vitodens
200-W B2HA boiler (as illustrated).
IMPORTANT
Legend
A Vitodens 200-W B2HA boiler with
Vitotronic 200, HO1B outdoor reset control
B Outdoor temperature sensor !
C Vitotrol remote (optional)
D Under floor heating circuit
E Heating circuit pump 28/20 *
F Mixing valve temperature sensor ?
G Accessory kit for heating circuit with mixing valve
H Heating circuit pumps
I DHW storage tank
J DHW tank temperature sensor %
K Expansion tank
L Temperature and pressure relief valve
M Low-loss header
N Viessmann temperature sensor for low-loss header ?
O Pressure relief valve
P DHW recirculation pump 28/20 *
Q Radiator heating circuit
R Boiler pump 20
S DHW circulating pump sA
* Function based on coding of address 53
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