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Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
Installation Examples
System Layout 7
Vitodens 222-F, B2TB with...
- one direct-connected heating circuit
- three heating circuits with mixing valve and integrated DHW production
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 less than
the maximum possible water flow rate of the Vitodens
222-F B2TB boiler (see page 30 for maximum water flow
rate of boiler).
The use of a low-loss header is strongly recommended if
the maximum water flow rate in the application concerned
exceeds the max. boiler flow rate, or if the system flow
rates are unknown. The low-loss header is available as
accessory part.
Legend
A
Vitodens 222-F B2TB 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
28/20
G
Mixing valve temperature sensor
?
H
Accessory kit for heating circuit with mixing valve
I
DHW storage tank
J
Integral expansion tank
K
Temperature and pressure relief valve outlet
L
Pressure relief valve outlet
M
Boiler
pump
20
N
DHW circulating pump
sA
O
Low-loss
header
P
Low-loss header sensor
?
Q
DCW
inlet
R
DHW
outlet
S
Vitotronic 200-H HK1B