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Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
System Layout 8
Vitodens 222-F, B2TB with...
- Integrated DHW production
- three zone circuits
Legend
Vitodens 222-F boilers
A
B
Low-loss header
Thermostat zone circuits 1, 2, 3
C
D
Zone circuit 1 [output 157]
E
AM1 extension module (accessory)
Zone circuit 2 [output A1 - AM1 extension module]
F
G
Zone circuit 3 [output A2 - AM1 extension module]
Installation of different heating circuits...
DHW production
■
3 zone circuits
■
... 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.
The use of a low-loss header is strongly recommended.
The low-loss header is available as accessory part.
A 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.
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.
Installation Examples
39
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