Extending The System With Additional Heating Circuits - Viessmann Vitotron 100 Series Installation And Operating Instructions Manual

Extending the system with additional heating circuits (only for type VMN3)
If the system needs to be extended with additional
heating circuits, the VMG3 heating circuit modules
must be used. Depending on the configuration of the
heating system, the boiler will operate in the following
modes [Configuration > Operating mode]:
Basic – in the case of boiler heating, the VCMG3
■
heating module(s) receive(s) the command to control
the temperature in the circuit. A heating installation is
shown below for illustration purposes.
Tos
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VMN3
The circuit controlled by the heating module operates
according to the boiler control schedule, but with its
own heating curve or manual settings.
Heat source – schedules are set individually in
■
each module. For VCMG3 heating modules, the
heating source (boiler) must be switched on.
Thanks to the above function, it is possible to install
a heating system consisting of several independent
work processes (each with its own schedule and
temperature settings). An example installation
scheme is shown below.
Tos
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VMN3
Buffer cylinder – the buffer cylinder is filled by the
■
boiler according to its own schedule, while the
heating modules drain the buffer according to their
own schedule.
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VMN3
– Buffer cylinder
1
VCMG3
VCMG3
VCMG3
Installation sequence
1
VCMG3
VCMG3
15