INSTaLLaTION
Commissioning
48
| WPL 15 IKS | WPL 25 IK
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Summer logic remains disabled with fixed temperature control.
This means that the heating circuit pump is not switched off for
the direct heating circuit. With the flap closed, the display shows
the fixed temperature program, in other words it always shows
the heating times.
11
SILENT MODE
Reduced noise mode
SILENT MODE is an operating mode for air source heat pumps in
which the sound level of the heat pump is reduced.
Note
Silent mode has an effect on the heating output and ef-
ficiency of the heat pump.
When silent mode 2 is active, higher electricity bills re-
sult.
OUTPUT REDUCT
When SILENT MODE 1 is active, this parameter enables you to
reduce the compressor output up to 50 %.
HEAT PUMP OFF
As soon as this parameter is set to ON while SILENT MODE 2 is
active, the heat pump is switched off and the emergency/booster
heater takes over the central heating / DHW function.
12
RTRN MAX
Maximum return temperature
Setting range 20 °C to 60 °C.
During heating operation the heat pump is immediately switched
off, as soon as the temperature at the return sensor reaches the
set temperature. 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.
13
MAX FLOW T HTG
Maximum heat pump flow temperature for central heating
Setting range 20 °C to 70 °C.
This setting limits the flow temperature of the heat pump and the
electric emergency/booster heater in heating mode.
14
MAX FLOW T DHW
Maximum heat pump flow temperature for DHW
Setting range 20 °C to 70 °C.
This setting limits the flow temperature of the heat pump in DHW
mode.
15
MIXER MAX
Maximum mixer flow temperature
Setting range: 20 °C to 55 °C
This setting limits the flow temperature of the mixer circuit. For
example, if a higher set flow temperature is calculated from the
mixer circuit data, the maximum set mixer flow temperature will
be used to control and regulate to this value.
16
MIXER DYNAMIC
Mixer runtime
Setting range: 30 to 240.
This allows the characteristics of the mixer to be adjusted. The
setting 30 to 240 equals 3 K to 24 K control deviation.
The system scans every 10 seconds, and the minimum on time for
the mixer is 0.5 seconds. The mixer does not respond inside the
dead zone of ±1 K from the set value.
Example for the setting 100 = 10 K:
The control deviation (set mixer temperature – actual mixer tem-
perature) is 5 K. The mixer opens for 5 seconds, pauses for 5 se-
conds and starts again from the beginning.
The control deviation (set mixer temperature – actual mixer tem-
perature) is 7.5 K. The mixer opens for 7.5 seconds, pauses for
2.5 seconds and starts again from the beginning.
The smaller the control deviation, the shorter the mixer on time
and the longer the pauses.
Reducing the MIXER DYNAMIC value while keeping the control
deviation unchanged increases the on time and reduces the pause.
Example of a control deviation
± 1 K
2
3
4
26
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3�
01
�1
06
7�
1
1 Setting 100 = control deviation 10 K
2 Control deviation 5 K
3 Control deviation in K
4 On time in %
