40
Reduced heating mode
For periods when you will be absent or during the
night, heat your rooms to the reduced room tempera-
ture. With underfloor heating systems, reduced heating
mode only yields limited energy savings (see "Under-
floor heating system").
Weather-compensated heating mode
In weather-compensated mode, the flow temperature
is controlled according to the outside temperature.
More heat is made available at a lower outside temper-
ature than at a higher one.
The outside temperature is captured and transmitted to
the control unit by a sensor. The sensor is fitted to the
exterior of the building.
Heating circuit
A heating circuit is a sealed unvented circuit connect-
ing the heat generator and the radiators, in which the
heating water circulates.
There may be several heating circuits combined in one
system. 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 circulating the heating water in
the heating circuit
Licences
See "Access point mode"
Mixer
Hot heating water from the heat generator is mixed
with cooled heating water from the heating circuit. The
heating water, thus brought to the required tempera-
ture, is pumped to the heating circuit by the heating cir-
cuit pump. The control unit adjusts the flow tempera-
ture via the mixer to suit different conditions, e.g.
changing outside temperatures.
Night setback
See "Reduced heating mode"
Open flue operation
The combustion air is drawn from the room where the
heat generator is installed.
Room sealed operation
The combustion air is drawn from outside the building.
Appendix
Terminology
(cont.)
5839615
Appendix
Summary of Contents for Vitotrol 300-E
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