Vitodens 200-W, B2HA 19 to 80 Technical Data
43
5683 717 - 03
Installation Examples
System Layout 4
Installation of ...
■
underfloor heating circuit with 3-way mixing valve
and system separation (low-temp. circuit)
■
DHW
production
... with the following flow conditions:
The flow rate of the heating circuit is less than the
maximum possible water flow rate of the Vitodens
200-W B2HA boiler.
See page 10 for maximum water flow rate of the Vitodens
200-W B2HA boilers. The use of a low-loss header is
recommended if the system water flow rate is unknown.
The low-loss header is available as accessory part.
See following pages for installation examples with a
low-loss header.
System separation is required of underfloor heating
systems employing non-oxygen diffusion barrier tubing.
All components on the secondary side of the heat
exchanger must be made of corrosion-resistant materials.
Sizing of field-supplied pump
P
is critical for proper boiler
operation in this system layout. See page 10 for the supply
head pressure drop of the boiler. An undersized pump may
cause short-cycling and/or improper operation of the boiler.
Viessmann STRONGLY recommends using a low-loss
header and a boiler pump in this system layout.
IMPORTANT
IMPORTANT
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
Radiator heating circuit
F
Heating circuit pump
G
Mixing valve temperature sensor
?
H
Accessory 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
28/20
*
O
Boiler
pump
20
P
DHW circulating pump
sA
* Function based on coding of address 33
DHW circulating pump
P
must pump into the Vitodens
200-W B2HA boiler (as illustrated).
Vitodens 200-W, B2HA with...
- DHW storage tank
- one direct-connected heating circuit
- one heating circuit with a mixing valve
