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Installation Examples
System Layout 3
Vitodens 222-F, B2TB with...
- Integrated DHW production
- one heating circuit with mixing valve and system separation
Legend
Vitodens 222-F B2TB boiler with
A
Vitotronic 200, HO1B outdoor reset
control
Outdoor temperature sensor !
B
C
Vitotrol remote (optional)
Underfloor heating circuit
D
Mixing valve temperature sensor ?
E
F
Pressure relief valve outlet
Plate heat exchanger for system
G
separation
H
Accessory kit for heating circuit with
mixing valve
I
DHW circulating pump sA
DHW storage tank
J
Integral expansion tank
K
L
Boiler pump
20
Temperature and pressure relief valve outlet
M
N
DCW inlet
O
DHW outlet
Expansion tank
P
34
Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
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
222-F B2TB boiler.
See page 30 for maximum water flow rate of the Vitodens
222-F B2TB 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.
IMPORTANT
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.
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