EUROSTER 12M –USER MANUAL 6
g. Settings
Contains the settings related to the operation of the heating zone and the feeding sensor.
CH ZONE
•Mixer
Mixer dynamics –determines the time of mixer response to changes in the zone
temperature. An excessive value may cause frequent cycling of the mixer,
whereas the insufficient value may cause slowness in achieving the preset
temperature.
Mixer hysteresis –if the measured temperature of the zone differs from the
preset one by half of the value of the preset hysteresis, then the mixer position
is not corrected.
•Alarm temperature
The zone overheating alarm is generated if the temperature of the zone sensor
exceeds the preset value of the "Alarm temperature". If the alarm temperature is
maintained longer than for one minute, then the pump is switched off.
The alarm temperature should be preset as the maximum safe temperature for
a particular heating zone. In the case of floor heating, it is recommended for the
alarm temperature not to exceed 50°C.
Caution! Incorrect setting of temperature level may cause improper operation
or major failure of the system components.
•Weather compensator
Using weather compensation enables to achieve thermal comfort regardless
of external temperature.
Upon switching the weather compensation on, set the temperatures of the heating
zone for three outside temperatures. Based on them, the controller calculates the
currently required heating zone temperature.
Caution! Temperatures must meet the condition of: T10°C≤T0°C≤T-20°C,
otherwise the control will not work properly.
•Room thermostat
Enables switching on room thermostat control and includes the operating
parameters in the situation if the hours are not selected in the schedule.In such
case (not selected hour in the schedule or open contacts of the room thermostat),
the pump operates in one of the three modes:
oContinuous —the pump operates continuously, the zone temperature
is reduced by the parameter "Temperature reduction".
oTime-based operation —the pump operates with a preset operating and
idle time period. In the operating time the preset temperature is reduced
by the parameter "Temperature reduction".
oSwitched-off —the pump is not operating, the mixer is closed.
•Automatic operation
Function enabling automatic switch-off if the temperature of the weather sensor
(outside) exceeds the preset value of "Switch-off temperature".
The heating will be restarted if the external temperature drops below the value
of "Switch-on temperature".
SUPPLY
•Feeding sensor ON/OFF
This item enables the controller operation with the feeding temperature sensor
switched off. In that case, the CH pump and the mixer operate based on the
schedule and the signal from the room thermostat.
•Shutdown temperature
Below this temperature, the CH pump is being switched on, and the mixer is being
closed. If the feeding temperature rises above "Shutdown temperature" by 2°C,
the pump is being switched on, and the mixer is being opened.
•Alarm temperature
