36
System version
The system version describes the components of your
heating system, such as a boiler, heating circuit pump,
mixer, valves, control unit, radiators, etc.
Each heating system is designed and adapted individ-
ually to local conditions by your heating contractor.
Operating program
The heating program enables you to determine for
example how your home and your DHW shall be
heated.
Operating status
See "Time program".
Booster heater
An electric booster heater can be used for reheating if
the required room temperature or DHW temperature
cannot be achieved.
Examples of electric booster heaters:
■
Instantaneous heating water heater:
–
For central heating and/or DHW heating
–
Integrated into the heat pump or into the flow of
your heating system
■
Immersion heater:
–
For DHW heating
–
Integrated into the DHW cylinder
Note
■
Constant operation of an electric booster heater
results in high electricity consumption.
Underfloor heating
Underfloor heating systems are slow, low temperature
heating systems and only respond very slowly to short
term temperature changes.
Therefore, heating to the reduced room temperature at
night and enabling
"Economy mode"
during short
absences do not result in significant energy savings.
Standard heating mode
For periods when you will be at home during the day,
heat your home to the standard room temperature. You
determine the periods (time phases) with the central
heating time program.
Reduced heating mode
For periods when you will be absent or during the
night, heat your home to the reduced room tempera-
ture. You determine the periods with the central heat-
ing time program. With underfloor heating systems,
reduced heating mode only yields limited energy sav-
ings (see "Underfloor heating system").
Room temperature-dependent heating mode
In room temperature-dependent mode a room will be
heated until the set room temperature has been
reached. For this, a separate temperature sensor must
be installed in the room.
The heating output is regulated independently of the
outside temperature.
Weather-compensated heating mode
In weather-compensated mode, the flow temperature
is controlled according to the outside temperature. This
means that no more heat is generated than necessary
to heat rooms to the temperature you selected.
The outside temperature is captured by a sensor fitted
on the outside of the building and transferred to the
boiler control unit.
Heating curve
The heating characteristics of your boiler are influ-
enced by the slope and level of the selected
heating
curve
.
Heating curves represent the correlation between the
outside temperature, the room temperature (set tem-
perature) and the (heating circuit) flow temperature.
■
Heating curve:
The
lower
the outside temperature, the
higher
the
flow temperature in the heating circuit.
In order to guarantee sufficient heat at any outside
temperature, the conditions of your building and your
heating system must be taken into consideration. For
this, you can adjust the heating curve.
Appendix
Terminology
5677 786 GB
Summary of Contents for Vitotrol 350
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