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Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
Installation Examples
System Layout 8
Vitodens 222-F, B2TB with...
- Integrated DHW production
- three zone circuits
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.
Legend
A Vitodens 222-F boilers
B Low-loss header
C Thermostat zone circuits 1, 2, 3
D Zone circuit 1 [output 157]
E AM1 extension module (accessory)
F Zone circuit 2 [output A1 - AM1 extension module]
G Zone circuit 3 [output A2 - AM1 extension module]
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.
IMPORTANT
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