EUROSTER 11E USER MANUAL
4
controller parameters (presets):
1. Controlled temperature
Threshold temperature at which controller will turn the respective pump ON/OFF.
2. Pump hysteresis
Difference between the temperature at which the controller turns the pump ON and the
temperature at which the controller turns it OFF. See section 9 below for details.
3. Temperature sensor correction
A constant added to/subtracted from all values measured by (external) temperature
sensor to compensate for difference in respect to water temperature inside the system.
4. Pump manual operation (test)
Display current pump status commanded by the controller (0/1 = pump
disengaged/engaged).
Press the knob and modify the parameter value to manually control the pump. Press
the knob once more or leave it inactive for 10 seconds to resume automatic mode of
control.
All presets are listed below for two possible modes of operation:
●
CH central heating pump control mode
●
UHW utility hot water pump control mode
Parameter
Preset value
Unit
Name
default
min
max
CH
UHW
CH
UHW
CH UHW
Controlled temperature
40
60
10
10
80
80
°C
Pump hysteresis
4
4
2
2
10
10
°C
Temperature sensor
correction
0
0
–5
–5
5
5
°C
Pump manual operation
(test)
as calculated by
the controller
as calculated by
the controller
0
(OFF)
0
(OFF)
1
(ON)
1
(ON)
-
9
CONTROLLER OPERATION
Central heating pump control mode:
•
The pump is engaged as soon as the boiler temperature T
boiler
has exceeded the preset
threshold T
preset
by more than half of the pump hysteresis H
pump
:
T
boiler
> T
preset
+ H
pump
/2
•
The pump is disengaged as soon as the boiler temperature has dropped below the
threshold by more than half of the hysteresis:
T
boiler
< T
preset
– H
pump
/2
Utility hot water pump control mode:
•
The pump is engaged as soon as the UHW tank temperature T
tank
has dropped below the
threshold T
preset
by more than half of the pump hysteresis H
pump
:
T
tank
< T
preset
- H
pump
/2
•
The pump is disengaged as soon as the UHW tank temperature has exceeded the
threshold by more than half of the hysteresis:
T
tank
> T
preset
+ H
pump
/2
10 THE ANTY-STOP FUNCTION
The ANTY-STOP function turns on the pump immediately after the controller is turned on, then
every 14 days. “AS” letters are blinking on the controller display while the function is active.
Any alarm generated while the ANTY-STOP function is active (overheating or temperature
sensor failure) aborts the function execution.
