Viessmann B2HB009 Installation Instructions Manual page 40

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Boiler Connections
System Layout 8
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
C
DHW pump [output 21]
Boiler pump [output 20]
D
Low-loss header
E
F
Thermostat zone circuits 1, 2, 3 (dry contacts)
Zone circuit 1 [output 157]
G
H
AM1 extension module (accessory)
I
Zone circuit 2 [output A1 - AM1 extension module]
Zone circuit 3 [output A2 - AM1 extension module]
J
K
Outdoor temperature sensor
DHW sensor
L
Supply temperature sensor
M
40
L
Vitodens 200-W B2HB 19 to 35, 68 to 125 Installation
K
M
Installation of different heating circuits...
DHW production
3 zone circuits
The use of a low-loss header is strongly recommended.
The low-loss header is available as accessory part.

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