Terminology - Viessmann VITOTRONIC 100 Operating Instructions Manual

Additional Information

Terminology

Setback mode (reduced heating mode)
See "Reduced heating mode".
Heating program
With the heating program you determine whether you
heat your rooms and DHW, or only heat DHW, or whether
you shut down your heating system with frost protection
monitoring.
You can select the following heating programs:
H "Heating and DHW"
The rooms are heated and DHW is provided (winter
mode).
H "only DHW"
DHW is provided but there is no central heating
(summer mode).
H "Standby mode"
Frost protection for the boiler and the DHW tank is
enabled, no central heating, no DHW heating.
Note: No operating program is available for central
heating without DHW heating. When you want
central heating, hot water is generally also required
(winter mode). If you do want just central heating,
select the heating program "Heating and DHW"
and set the DHW temperature to 50° F (10° C)
(see chapter "Setting the DHW temperature").
This means that you will not heat DHW
unnecessarily, but frost protection of the DHW
tank is ensured.
40
Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating
Operating status
In the heating program "Heating and DHW", the operating
status changes from "Standard heating mode" (see page
42) to the operating status "Reduced heating mode"
(see page 42) and vice versa. The times for the operating
status change are defined when the time program is set.
Extension kit for heating circuit with mixing valve
Assembly (accessory) for controlling a heating circuit with
mixing valve.
See "Mixing valve".
Heating curve
Heating curves illustrate the relationship between the
outside temperature, room temperature (set value) and
boiler water or (heating circuit) supply temperature.
The lower the outside temperature, the higher the boiler
water temperature or heating circuit supply temperature.
Heating circuit
A heating circuit is a sealed circuit between the boiler and
radiators, in which the heating water circulates.
A heating system may comprise several heating circuits.
For example, one heating circuit for the rooms occupied
by you and one heating circuit for the rooms of a separate
apartment.
Heating circuit pump
Circulation pump for the circulation of the heating water
in the heating circuit.