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57
InstallationIndications, functions and optionsMessages Commissioning Operation and function
With this parameter, the pump control type can be adjusted. The following types
can be selected:
Adjustment for standard pump without speed control
OnOF (pump on / pump off)
Adjustment for standard pump with speed control
PULS (burst control via semiconductor relay)
Adjustment for high-efciency pump (HE pump)
PSOL (PWM prole for a HE solar pump)
PHEA (PWM prole for a HE heating pump)
Minimum speed
nMN, n1MN, n2MN
Minimum speed
Adjustment range: (10) 30 … 100 %
Factory setting: 30 %
nMN, n1MN, if ODB is activated: 50 %
In the adjustment channels nMN, n1MN and n2MN a relative minimum pump
speed for connected pumps can be allocated to the outputs R1 and R2.
Note
The pump speed must be set to 100 % when auxiliary relays or valves are
connected.
nMX, n1MX, n2MX
Maximum speed
Adjustment range: (10) 30 … 100 %
Factory setting: 100 %
In the adjustment channel n1(2)MX a relative maximum speed for connected
pumps can be allocated to the outputs R1 and R2.
Note
The pump speed must be set to 100 % when auxiliary relays or valves are
connected.
Maximum store temperature
S MX / S1MX / S2MX
Maximum store temperature
Adjustment range: 4 … 95 °C [40 … 200 °F]
Arr 10: 4 … 90 °C [40 … 190 °F]
Factory setting: 75 °C [167 °F]
If the store temperature reaches the adjusted maximum temperature, the store will
no longer be loaded in order to avoid damage caused by overheating. A non-adjusta-
ble hysteresis of 2 K [4 °Ra] is set for the maximum store temperature.
If the maximum store temperature is exceeded, is displayed.
Note
If the collector cooling or the system cooling function is activated, the
adjusted maximum store temperature may be exceeded. In order to pre-
vent system damage, the controller is also equipped with an integrated
store emergency shutdown, deactivating the system if the store reaches
95 °C [200 °F].
Store emergency shutdown
OSEM
Store emergency shutdown option
Adjustment range: ON, OFF
Factory setting: OFF
This option is used for activating the internal store emergency shutdown for an upper
store sensor. If the temperature at the reference sensor exceeds 95 °C, store 1 will be
blocked and loading will be stopped until the temperature falls below 90 °C.
Note
Sensor S3 is used as the reference sensor in systems 1, 2, 3, 8, 9 and 10. In
the systems 6 and 7, sensor S4 is used as the reference sensor. This option
is not available in system layouts 4 and 5, in the system layouts 6 and 7 it
will only be available if heat quantity measurement is deactivated.
57


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