System Layout 5 - Viessmann VITODENS 200-W Technical Data Manual

Vitodens 200-W, B2HB 19 to 35 Technical Data

System Layout 5

Vitodens 200-W, B2HB with...
- DHW storage tank
- one heating circuit with mixing valve
- one heating circuit without mixing valve and low-loss header
Legend
A
Vitodens 200-W B2HB boiler with
Vitotronic 200, HO1B outdoor reset control
B Outdoor temperature sensor !
C
Vitotrol remote (optional)
D
Under floor heating circuit
E
Radiator heating circuit
F
Boiler circuit pump
20
G Mixing valve temperature sensor ?
H
Kit for heating circuit with mixing valve
I
Domestic hot water storage tank
J DHW tank temperature sensor %
K
Expansion tank
L
Temperature and pressure relief valve
M
Pressure relief valve
N
DHW recirculation pump
O DHW circulating pump sA
P
Heating circuit pump
Q
Low-loss header
R Viessmann temperature sensor for low-loss header ?
S
Heating circuit pump 28/
* Function based on coding of address 33
*
28/20
*
20
Installation of different heating circuits...
radiator heating circuit (high-temp. circuit)
■
under floor heating circuit 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 B2HB boiler (see page 8 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.
IMPORTANT
DHW circulating pump O must pump into the Vitodens
200-W B2HB boiler (as illustrated).
Installation Examples
33