oPeration
menu structure
16
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HeatinG curve
Adjustment of programmed changeover between Comfort and
ECO mode
The figure shows the diagram with the set heating curve relating
to a set room temperature for comfort mode. The second, dashed
line relates to a set room temperature for ECO mode.
60
40
20
0
1
2
20
15
10
5
0
-5
-10
-15
-20
26
�0
3�
01
�1
91
5
Y Return / flow temperature [°C]
X Outside temperature [°C]
1 Comfort mode
2 ECO mode
adapting a heating curve
Example:
With heating systems, the temperature in a building during the
transitional periods (spring and autumn) is too low when outside
temperatures are between 5 °C and 15 °C, despite open radiator
valves, but is OK at outside temperatures ≤ 0 °C. This problem can
be remedied with a parallel shift and a simultaneous reduction
of the heating curve.
Heating curve 1.0 was initially adjusted relative to a set room tem-
perature of 20 °C. The dotted line indicates the modified heating
curve at 0.83 and a modified set room temperature of 23.2 °C.
60
40
20
0
20
15
10
5
0
-5
-10
-15
-20
26
�0
3�
01
�1
91
6+
Y Return / flow temperature [°C]
X Outside temperature [°C]
Standard SettinG
Buffer operat
When using a buffer cylinder, set this parameter to ON.
Summer mode
Parameter SUMMER MODE enables you to define the point at
which the heating system is to switch to summer mode. Summer
mode can be switched on or off. There are 2 adjustable parameters
for this function.
-
parameter outSide temperature:
Outside temperature adjustable from 10 °C to 30 °C
-
parameter BuildinG Heat Buffer
This parameter lets you choose whether an average outside tem-
perature should be determined, according to the type of building.
You can choose from 3 settings.
Setting "1": Minor insulation towards outside temperatures (aver-
aging over a 24 h period), e.g. for timber construction with rapid
heat transfer.
Setting "2": Moderate insulation towards outside temperatures
(averaging over a 48 h period), e.g. brick construction with thermal
insulation and average heat transfer.
Setting "3": Strong insulation towards outside temperatures (aver-
aging over a 72 h period). House with slow heat transfer.
If the determined outside temperature is ≥ than the selected out-
side temperature, both heating circuits (if installed) enter summer
mode; reverse hysteresis –1 K.
With fixed-value control, summer mode is disabled for heating
circuit 1.
maXimum return temp
Setting range 20 °C to 55 °C.
If the temperature at the return sensor reaches this set value dur-
ing heating operation, the heat pump is immediately switched
off. This safety function prevents the high pressure switch from
responding. No fault message is issued when this value is reached.
During DHW operation the return temperature is not scanned.
maXimum floW temp
Maximum heat pump flow temperature for central heating
Setting range 20 °C to 65 °C.
This setting limits the flow temperature of the heat pump and the
electric emergency/booster heater in heating mode.
miXer dynamicS
Mixer runtime
Setting range 60 to 240
You can use this setting to adapt the mixer characteristics. The
setting 60 to 240 means 6 K to 24 K control deviation.
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