en
57
Installation
Indications,
functions and options
Messages
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-efficiency pump (HE pump)
• PSOL (PWM profile for a HE solar pump)
• PHEA (PWM profile 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.
