Viessmann Vitodens 200-W B2HA 112 Installation Instructions Manual page 44

Boiler Connections
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
42
Vitodens 200-W B2HA 112, 150, 399, 530 Installation
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.