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L:\Bedienanleitungen\...\HR3_englisch_240605.pmd
Continuation of 8.4 Menu "03 Settings"
max. VL 45°C (setting range 30...80°C)
The maximum flow temperature which is set here, limits the upper
characteristic line of the heating circuit, in order to prevent the
heating cirucuit from overheating. This is especially required for
floor heating systems as a too high flow temperature might cause
damage of the plastic tube or of the floor covering. If the set
value is exceeded, the mixer will shut down and the heating pump
will switch off.
For safety purposes, beside the electronic flow temperature
limitation, the floor heating systems are to be equipped with an
additional limiting thermostate which will be connected to the
heating circuit pump in serial connection.
Steepness 1,2 (setting range 0,0...2,1)
With the help of the characteristic line, the heat emission of the
radiators is controlled depending on the outdoor temperature.
The diagram below shows the influence of the selected steepness
of the characteristic line on the desired flow temperature of the
heating circuit. The correct charactristic line is selected by
determining the point of intersection of the calculated maximum
flow temerature (dimensioning temperature) at a minimum
outdoor temperature.
Example: The dimensioning temperature of the radiations is 60°C
flow at the lowerst outdoor temperature according to the heat
requirement calculation of -12°C. The point of intersection
results in a steepness of 1,2 as setting value.
Daily correction 5K (setting range 0...50K)
A parallel displacement of the heating characteristic line during
the daily operating hours is performed by the daily correction as
it might occur that with the set characteristic line the building
would not be optimally heated corresponding to the outdoor
temperature. If the characteristic line is not optimized, the
following situation might often occur:
if the weather is warm - it is too cold in the room
if the weather is cold - it is too warm in the room
In this case, the steepness of the characteristic line is
incrementally lowered by 0.2 points and the daily correction is at
each step raised by 2-4 °C. If required, you may repeat this
proceeding several times.
Comfort peaking OFF (setting range OFF...10K)
During the daily operating hours with activated comfort peaking,
this value will be added to the daily correction in order to achieve
a higher temperature in the living room.
Overnight lowering -2K (setting range +10...-30K)
If a negative value is set for the overnight lowering, the flow
temperature of the set characteristic line will be reduced during
the times when the installation is not run in the daily operation.
Mainly overnight but as well during daytime when no one is at
home, the room temperature will be less in order to save energy.
Example: At a daily correction of +5K and an overnight lowering
of -2K results a required flow temperature during overnight
operation of minus 7°C.
8.5Menu "04 Operational mode"
In this menu you may set the controller from automatic operation
to continuously daily operation, continuously overnight operation,
off, manual or target value operation.
Auto = automatic operation
The controller is running in normal operation with the described
functions.
D-day = continuously daily operation
The controller is always running on the daily program with the
daily correction, the operating times are disregarded. If this
operational mode is activated, only the reference „daily operation“
will appear on the display.
D-night = continuously overnight operation
The controller is always running on the overnight program with
the set overnight lowering, the operating times are disregarded.
If this operational mode is activated, only the reference „continous
overnight operation“ will appear on the display.
OFF = standard function swiched off
Any standard functions are switched off. If this operational mode
is activated, the reference „operational mode OFF“ will appear
from time to time and the red LED flashes as a warning.
Manual = manual operation (refer to paragraph 4.)
Any standard functions are switched off and the heating pump is
switched on. The mixer will be opened and closed by pushing a
button. The current flow temperature will be displayed on the
screen. During the manual operation, the red LED flashes as a
warning. After quitting the menu, the controller will restore the
operational mode which had been last used.
Target value = Checking the fixed target value
Caution: The normal standard functions are being switched off
and the installation only regulates the fixed target value which is
set here for the activaed heating pump. The current flow
temperature will be displayed on the screen. After quitting the
menu, the controller will restore the operational mode which had
been used last.
04 Operational mode Selecting or
confirmation with
4


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