Vitodens 200-W B2HB 45, 57 Installation
35
5680 493 - 05
Boiler Connections
System Layout 3
Vitodens 200-W, B2HB with...
- DHW storage tank
- one heating circuit with mixing valve and system separation
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 B2HB boiler.
See page 31 for maximum water flow rate of the Vitodens
200-W B2HB 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 31 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
Legend
A
Vitodens 200-W B2HB boiler with
Vitotronic 200, HO1B outdoor reset
control
B
Outdoor
temperature
!
C
Vitotrol remote (optional)
D
Underfloor heating circuit
E
Mixing valve temperature sensor
?
F
Pressure relief valve
G
Plate heat exchanger for system
separation
H
Accessory kit for heating circuit with
mixing
valve
I
DHW circulating pump
sA
J
DHW storage tank
K
DHW tank temperature sensor
%
L
Expansion
tank
M
DHW recirculation pump
28/20
*
N
Temperature and pressure relief valve
O
Flow check valve
P
Heating circuit pump
20
Q
Heating circuit pump
*
Function based on coding of address 33
DHW circulating pump must pump
I
into the Vitodens
200-W B2HB boiler (as illustrated).
IMPORTANT
