Storage tank temperature average value at 0% loading
This average temperature in the storage tank means 0%
storage tank charge.
Storage tank temperature average value at 100% loading
This average temperature in the storage tank means 100%
storage tank charge.
Storage tank distributor 1...4 mode
Defines the operating mode of the storage tank. The multi-
sensor controls use the sensor measurements to
determine the latest storage tank charge. This is used as
the basis for the storage tank charge.
▪ 2-sensor on-off control: The upper and lower
temperature in the storage tank are used as the start/
stop criteria for the storage tank charge.
▪ Multi-sensor - ramp control: The requirement of the
storage tank is determined linearly between the two
defined support points for the storage tank charge at
0% control and 100% control. The boiler does not just
start to regulate to 100% output when the minimum
storage tank charge is reached, but attempts to
Storage tank distributor 1...4 mode
maintain the required storage tank charge beforehand
instead. This gives a range within which the boiler can
regulate between minimum and maximum output. The
support points must be parameterised for this purpose.
▪ Multi-sensor - PI control: A setpoint for the storage tank
charge is specified in percent. Based on the
corresponding deviation and speed, a PI controller then
determines any changes to the charge status of the
0-100% store requests. The storage tank setpoint and
control parameter of the PI controller must be
parameterised for this purpose.
Storage tank distributor 1...4 fully loaded at bottom
temperature
Defines the temperature difference between the maximum
temperature of the boiler and the bottom storage tank
temperature (bottom storage tank sensor) in °C, from
which the storage tank is fully loaded and the system
follows the shutdown procedure.
Storage tank distributor 1...4 minimum temperature top
Minimum temperature in storage tank (top store sensor),
from which the boiler is started for storage tank loading.
Storage tank distributor 1...4 temperature top hysteresis
Defines the hysteresis for the storage tank top
temperature. This hysteresis is used both for storage tank
start/stop and for the 5-sensor storage tank management
system.
2-sensor storage tank management: The boiler can only
switch off when the “Storage tank minimum temperature
top” parameter has been exceeded by this value.
5-sensor storage tank management: It only switches back
to the 5-sensor signal, when the “Storage tank minimum
temperature top” parameter has been exceeded by this
value.
5.1.4 Network circuit 1... 2
System menu
Environment
Network circuit
Network circuit 1...2 mode
Defines the function of the network circuit:
▪ Auto: The network circuit is regulated according to the
set programme (heating times, temperature settings,
etc.).
▪ Continuous operation: The network circuit is
continuously in heating mode (24 hrs), the setback
mode and the set heating times are ignored.
▪ Off: The network circuit is deactivated, the frost
protection function remains active.
Network circuit 1...2 operating hours adjustment
Specifies how often the operating hours adjustment should
be completed.
Network circuit 1...2 use enabling signal mode
Defines whether the network circuit may be started by an
external request (e.g. higher-level control system).
5
Menus and parameters
Environment
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