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

Installation Examples

System Layout 5

Vitodens 200-W, B2HA with...
- DHW storage tank
- one heating circuit with mixing valve
- one heating circuit without mixing valve and low-loss header
Legend
Vitodens 200-W B2HA boiler with
A
Vitotronic 200, HO1B outdoor reset control
Outdoor temperature sensor !
B
C Vitotrol remote (optional)
D Under floor heating circuit
Radiator heating circuit
E
F Boiler circuit pump
Mixing valve temperature sensor ?
G
Kit for heating circuit with mixing valve
H
I Domestic hot water storage tank
DHW tank temperature sensor %
J
K Expansion tank
L Temperature and pressure relief valve
Pressure relief valve
M
N DHW recirculation pump
DHW circulating pump sA
O
Heating circuit pump
P
Q Low-loss header
Viessmann temperature sensor for low-loss header %
R
S Heating circuit pump 28/
* Function based on coding of address 33
44
20
*
28/20
*
20
Vitodens 200-W, B2HA 19 to 80 Technical Data
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 B2HA boiler (see page 10 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 B2HA boiler (as illustrated).