64
Screed drying
Your contractor can activate this function for screed
drying, for example in your new build or extension.
This means your screed is dried in line with a fixed
time program (temperature/time profile) that is appro-
priate for the building materials used.
The screed drying function affects heating circuits with
mixer:
■
All rooms are heated according to the temperature/
time profile.
Your settings for central heating have no effect for
the duration of screed drying (max. 32 days).
■
DHW heating is enabled. The priority control (DHW
heating first, then central heating) is however sus-
pended.
Underfloor heating
Underfloor heating systems are slow, low temperature
heating systems that respond only very slowly to short
term temperature changes.
Therefore, heating to the reduced room temperature at
night or switching on
"Economy mode"
during short
absences does not result in significant energy savings.
Heating mode
Standard heating mode
For periods when you will be at home during the day,
heat your rooms to the standard room temperature.
Set the periods (time phases) using the time program
for central heating.
Reduced heating mode
For periods when you will be absent or during the
night, heat your rooms to the reduced room tempera-
ture. Set the periods using the time program for central
heating. With underfloor heating systems, reduced
heating mode only yields limited energy savings (see
"Underfloor heating system").
Room temperature-dependent heating mode
In room temperature-dependent mode a room is
heated until the set room temperature has been
reached. For this, a separate temperature sensor must
be installed in the room.
The heating output and therefore the flow temperature
are regulated independently of the outside tempera-
ture.
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 curve
Heating curves illustrate the relationship between the
outside temperature, the set room temperature and the
boiler water temperature or flow temperature. The
lower the outside temperature, the higher the boiler
water temperature or flow temperature.
In order to guarantee sufficient heat and minimum fuel
consumption at any outside temperature, the condi-
tions of your building and your heating system must be
taken into consideration. The heating curve is set by
your contractor for this purpose.
The heating curves shown apply with the following set-
tings:
■
Heating curve level = 0
■
Standard room temperature (set value) = 20 °C
Appendix
Terminology
(cont.)
5863758
Summary of Contents for VITOTRONIC 200
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