0020288151_04 Operating and installation instructions 15
Off The back-up boiler does not support the heat pump.
The back-up boiler is activated for the anti-legionella function, frost
protection or de-icing.
Heating The back-up boiler supports the heat pump during heating.
The back-up boiler is activated for the anti-legionella function.
DHW The back-up boiler supports the heat pump during domestic hot
water generation.
The back-up boiler is activated for frost protection or de-icing.
DHW + heat. The back-up boiler supports the heat pump during domestic hot
water generation and heating.
Installation flow temperature: °C Measured temperature, e.g. downstream of the low loss header
Buffer cylinder offset: K In the case of excessive current, the buffer cylinder is heated up to
the flow temperature + set offset via the heat pump. Prerequisite:
– A photovoltaic installation is connected.
– Photovoltaics is activated in the HP control module config-
uration → MI: function.
Factory setting: 10 K
Actuation reversal: Prerequisite: The heating installation contains a cascade.
Factory setting: On
Off The system control always actuates the heat generators in the
sequence 1, 2, 3, etc.
On Once a day, the system control sorts the heat generators based on
their actuation time.
The back-up heater is excluded from this sorting.
Actuation sequence: Sequence in which the system control actuates the heat generat-
ors.
Prerequisite: The heating installation contains a cascade.
Conf. ext. input: Select whether the external heating circuit is deactivated using a
bridge or open terminals.
Prerequisite: The FM5 and/or FM3 functional module is connected.
Factory setting: Bridge,deact.
Max. pre-heating time: Setting the time span so that the required room temperature is
reached at the beginning of the first time period.
The start of heating is determined as a function of the outdoor tem-
perature (OT):
– OT ≤ -20 °C: Set duration of the pre-heating time
– OT ≥ +20 °C: No pre-heating time
The duration of the pre-heating time is interpolated linearly
between these two values.
Factory setting: Off
DHW in casc.: Set whether the first heat pump or all heat pumps are to be used
for the domestic hot water generation.
Factory setting: All heat pumps
OT constant heating: If the outdoor temperature falls below the set temperature value,
Heat curve: is used to regulate to 20 °C outside of the time peri-
ods.
OT ≤ set temperature value: No night set-back or total shut-down
Factory setting: Off
Flow temp. corr. max. value: K Setting the maximum value for the flow temperature correction.
The flow temperature correction function compensates for the de-
viation of the system flow temperature that is not reached by in-
creasing the target flow temperature for heat generators.
Basic system diagram config.
Basic system diagram code: Systems are roughly grouped according to their connected system
components. Each group has a basic system diagram code. Based
on the code that is entered, the system control enables the sys-
tem-related functions.
You can use the connected components to determine the basic
system diagram code for the installed installation (→ Using the
functional modules, basic system diagram, start-up) and enter this
here.
Factory setting: Basic system diagram 1 or 8
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