35
The following settings for the FE 7 and
the FEK can be selected for the cooling
mode in parameter 6:
- Room temp
Cooling starts, when the selected room
temperature is exceeded
(output COOLING=230V).
Cooling is stopped, if the actual room
temperature drops 2 K below its set
temperature. (output COOLING=0V)
- Flow temperature and hysteresis
The cooling mode is regulated via the
selected flow temperature. The brine
pump starts at:
[flow temperature + hysteresis]
Brine pump OFF, when the actual
temperature drops below the flow
temperature.
The [flow temperature+hysteresis] should
be at least 3 K < room temperature. Lower
flow temperatures cause a more rapid
cooling of the room.
As soon as, with setting AREA, the
determined dew point temperature
+ 2 K is higher than the selected flow
temperature, that temperature will
be overridden with the dew point
temperature and acts as control variable.
The brine pump starts at [entered or newly
determined flow temp. + hysteresis].
The source pump is stopped and the
cooling mode is terminated, if the actual
flow temperature lies below the entered
or newly determined flow temperature.
The cooling signal remains active.
- Dynamics:
Dynamics can be adjusted from 1 to 10.
It describes the delay between stage 1
and stage 2, whereby the second stage is
started sooner, the smaller the value.
HEAT UP PROG
Heat-up program for underfloor heating
systems
This heat-up program comprises a total of
six parameters. These six parameters can be
adjusted in sequence as soon as the heat-up
program is activated. This program is started
with the parameter heat-up prog and with
the setting ON. The system then heats to the
selected low end temperature (parameter
LOW END TEMP). The low end temperature
is then held for the set period (parameter
low end durat). After expiry of this period,
the system heats with an increase K/day
(parameter increase/day) to the maximum
low end temperature (parameter Max heat-up
temp) and held at the maximum temperature
via the selected time (parameter Max temp
time). After expiry of this period, the system
reduces the temperature back to the low end
temperature in the same stages as per heat-
up. This concludes the heat-up program. As
soon as two heating circuits are operational,
both will be operated in accordance with
this heat-up program (operation with buffer
cylinder and mixer circuit). The direct heating
circuit 1 (buffer circuit with return sensor)
adopts the heat-up program set values. The
actual temperature inside the buffer cylinder
is higher at the heating flow as the regulation
takes place via the return sensor. The mixer
(heating circuit 2) regulates the temperature
back down to the selected set values in the
heat-up program (low end temperature and
maximum temperature).
Please note that only the mixer circuit pump
is running when operating with two heating
circuits.
The return sensor is again used for control,
when only the direct heating circuit 1 is
operational. As the actual temperature
inside the buffer cylinder is higher at the
heating flow, this constellation sees 5 K being
deducted from the heat-up program set values
(low end and maximum temperatures).
The summer logic is disabled when the heat-
up program runs.
8
SUMMER MODE
The summer mode parameter allows you to
select the time from when the heating system
should change into summer mode. Summer
mode can be switched ON or OFF. In total, this
function offers two adjustable parameters.
The "Building Type" parameter determines,
subject to building type (setting 1, 2 or 3), an
adjusted outside temperature. Both heating
circuits (if installed) enter summer mode, if
the adjusted outside temperature is ≥ than the
selected outside temperature; reverse hyster-
esis –1 K.
The display indicates summer mode when the
flap is closed.
Summer mode is disabled for heating circuit 1
when regulating to a fixed temperature.
OUTSIDE TEMP parameter:
Available outside temperature 10 °C to 30 °C
Building type parameter:
Setting 1: Mild adjustment (averaging over a
24 h period) of the outside temperature, e.g.
timber construction with rapid heat transfer.
Setting 2: Average adjustment (averaging over
a 48 h period) of the outside temperature, e.g.
solid construction with thermal insulation and
average heat transfer.
Setting 3: Severe adjustment (averaging over
a 72 h period) of the outside temperature, e.g.
house with slow heat transfer.
7
Dauer-Maximaltemp.
Ende
Zeit
Dauer-Sockeltemp.
Sockeltemp.
Steigung K/Tag
Temperatur
Maximaltemp.
Aufheizprogramm für Fußbodenheizung
26_03_01_0144
Temperature
Max. temp.
Base temp.
Increase in K/days
Duration base temp. Duration max. temp. End Time
Heat-up program for underfloor heating systems
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