System Layout 2 - Viessmann B2HB 45 Installation Instructions Manual

Boiler Connections

System Layout 2

Vitodens 200-W, B2HB with one heating circuit and low-loss header
Legend
A Vitodens 200-W B2HB boiler with
Vitotronic 200, HO1B outdoor reset
control
Outdoor temperature sensor !
B
Vitotrol remote (optional)
C
D Heating circuit
Boiler pump
E
20
F DHW circulating pump sA
G DHW storage tank
DHW tank temperature sensor %
H
I Expansion tank
Temperature and pressure relief valve
J
DHW recirculation pump
K
L Low-loss header
Pressure relief valve
M
Viessmann temperature sensor for
N
low-loss header ?
Heating circuit pump
O
* Function based on coding of address 33
34
*
28/20
*
28/20
Vitodens 200-W B2HB 45, 57 Installation
Installation of ...
radiator heating circuit (high-temp. circuit)
■
DHW production
■
... with the following flow conditions:
The flow rate of the heating circuit is greater than the
maximum possible water flow rate of the Vitodens
200-W B2HB boiler (see page 31 for maximum water
flow rate of boiler).
The use of a low-loss header is strongly recommended
if the maximum water flow rate in the application
concerned exceeds the values shown on page 31,
or if the system flow rates are unknown.
The low-loss header is available as accessory part.
IMPORTANT
Please note location of expansion tank.
DHW circulating pump F must pump into the Vitodens
200-W B2HB boiler (as illustrated).