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Vitodens 200-W B2HA 80 to 100, 285 to 352 Installation
System Layout 9
Vitodens 200-W, B2HA/B2HB with...
- DHW storage tank
- low-loss header
- three zone circuits
Legend
A
Vitodens 200-W boilers
DHW storage tank
B
DHW pump [output 21]
C
D
Boiler pump [output 20]
Low-loss header
E
F
Thermostat zone circuits 1, 2, 3 (dry contact)
G
Zone circuit 1 [output 157]
AM1 extension module (accessory)
H
I
Zone circuit 2 [output A1 - AM1 extension module]
Zone circuit 3 [output A2 - AM1 extension module]
J
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 200-W B2HA/B 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
a 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.
Boiler Connections
41
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