oPeration
menu structure
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17
The scan rate is 10 s and the minimum on time for the mixer is
0.5 s. The mixer does not respond in 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 s, then pauses for 5 s and
starts again.
The control deviation (set mixer temperature – actual mixer tem-
perature) is 7.5 K. The mixer opens for 7.5 s, then pauses for 2.5
s and starts again.
The smaller the control deviation, the shorter the mixer on time
and the longer the pauses.
A reduction of the MIXER DYNAMIC value with the control devi-
ation unchanged increases the on duration and reduces pauses.
Example for setting 100 and a current control deviation of 5 K.
5 K of 10 K = 50 % = on duration
Example: Control deviation
± 1 K
4
3
26
�0
3�
01
�1
06
7
1
2
1 Setting 100 = control deviation 10 K
2 Control deviation 5 K
3 Control deviation in K
4 On time in %
maXimum miXer temperature
Setting range 20 °C to 90 °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 max. set mixer flow temperature will be
used to control and regulate to this value.
fiXed value operation
The heat pump return is regulated to the set fixed value. The
switching time program will then be ignored. The various posi-
tions of the program selector will then only affect the mixer circuit
(if installed). When the program selector is set to standby and a
fixed temperature has been selected the frost protection is acti-
vated and the compressor is switched off. Summer logic remains
disabled with fixed temperature control. This means that the heat-
ing circuit pump is not switched off for the direct heating circuit.
HeatinG circuit optimal
When an Uponor DEM-WP module is connected, the heating curve
is dynamically optimised for the heat demand of individual rooms.
This involves modifying the preset heating curve by up to 50 %
of its original value.
The parameter HEATING CIRCUIT OPTIMAL is only displayed when
the buffer operation parameter is set to "OFF" and neither a mixer
sensor nor an FE7 remote control are connected.
The parameter HEATING CIRCUIT OPTIMAL can be set to "ON" or
"OFF". The default value is "OFF".
This parameter may only be set to "ON" when an Uponor DEM WP
module is connected.
This function is only active in comfort mode, ECO mode and pro-
grammed operation.
froSt protect
To protect the heating system from frost, start the heating circuit
pumps at the selected frost protection temperature; the reverse
hysteresis is 1 K.
