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Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
Installation Examples
System Layout 5
Vitodens 222-F, B2TB with...
- Integrated DHW production
- one heating circuit with mixing valve
- one heating circuit without mixing valve and low-loss header
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 222-F B2TB boiler (see page 30 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.
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
Boiler
pump
20
G
Mixing valve temperature sensor
?
H
Kit for heating circuit with mixing valve
I
Domestic hot water storage tank
J
Integral expansion tank
K
Temperature and pressure relief valve outlet
L
Pressure relief valve outlet
M
Heating pump
28/20
N
Low-loss
header
O
Viessmann temperature sensor for low-loss header
?
P
DCW
inlet
Q
DHW
outlet
R
DHW circulating pump
sA