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Emergency regulation
During winter operation, in case of sensor failure, in order to avoid problems
regarding freezing, the programmable thermostat activates the relay for 10 minutes
every 4 hours and field (16) will display the "---" symbol.
Restoring default parameters
Simply pressing the "R" key will not cause a total reset of the instrument. To do so
and allow the loading of the default values, it is necessary to press the "R" key and
then, within 3 seconds, the " " key. The display will show the writing "dEF".
The default regulation type is ON/OFF with deactivation in correspondence
with the setpoint and with differential set to 0.3°C.
During on/off operation mode, the output relay follows the following logic:
heating mode
relay ON
relay OFF
SET-DIFF
Temperature
increasing
During heating mode the proportional regulation can be chosen; in certain types
of systems, this allows to improve the regulation, in order to obtain a constant
temperature.
This regulation activates the ON or OFF relay within a predefined regulation cycle on
the basis of the gap of the temperature measured by the setpoint value.
The necessary parameters for the definition of this mode are:
• the regulation band
• the regulation period
The regulation band represents the temperature interval, centered on the setpoint, in
which the proportional regulation is checked.
REGULATION TYPE
cooling mode
relay ON
relay OFF
SET
Temperature
increasing
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Mithos Wi-fi Chronothermostat User Manual
SET
SET+DIFF
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