4.4.3 Buffer tank - Times
System menu
Buffer tank
⇨ See "Setting times" [page 133]
4.4.4 Buffer tank - Service
System menu
Buffer tank
Enable heating circuit pump 0 according to top buffer
temp.
▪ NO: Release of heating circuit pump 0 according to the
boiler temperature parameter “
Minimum boiler
temperature to release all pumps
”
▪ YES: Release of heating circuit pump 0 according to the
temperature in the top part of the buffer tank parameter
“Heating circuit release from following
buffer tank temperature”
Control buffer tank requests according to system
environment
▪ NO: The start criterion of the boiler is defined via the
parameter
“Boiler start if difference
between boiler setpoint and top buffer is
larger”
.
▪ YES: All heating circuits and DHW tanks that are
connected to the boiler system and activated report
requirements back to the controller on the basis of
temperature specifications or according to the outside
air temperature. These requirements are compared with
the current temperature in the top buffer tank and if this
temperature is too low the boiler is started. If there is no
requirement from the system or if the loading criterion is
fulfilled, the boiler switches off.
According to system environment, buffer tank request
shutdown delay of
If there is no requirement from the heating circuit and
DHW tank, the boiler system stops at the end of the
specified time.
NOTICE! Parameter only if “Control buffer tank requests
according to system environment” parameter is relevant.
Sensor input of storage tank top sensor
Sensor input to which the sensor in the top part of the
buffer tank is connected.
Sensor input of storage tank sensor 2-7
The number of sensors displayed depends on the
configuration. All of the configured sensors are used to
calculate the storage tank charge status.
Sensor input of storage tank middle sensor
Sensor input to which the sensor in the mid area of the
buffer tank is connected.
Sensor input of storage tank bottom sensor
Sensor input to which the sensor in the bottom part of the
buffer tank is connected.
Pump output of storage tank pump
Pump outlet to which the buffer loading pump is
connected.
Control of storage tank pump
Definition of control signal for pump type used.
⇨ See "Activation options of pump outlets" [page 124]
Minimum storage tank pump speed
Adjustment of the minimum speed to the pump type (set
mode of pump in accordance with pump manufacturer).
Maximum buffer tank pump speed
If you need to limit the maximum speed of the store
loading pump for systemic reasons, you can do so by
adjusting this parameter.
4
Parameters overview
Buffer tank
62
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