ST-81 – USER'S MANUAL
I.a) Basic Terms
Fire up – The cycle begins when you activate the fire up unction in the
controller's menu and is active until the central heating boiler
temperature reaches 40oC (the de ault fire-up threshold), on condition
that the temperature does not drop below this value or 2 minutes (the
de ault fire-up time). I these conditions are met, the regulator will
switch to the operation mode and the manual operation symbol on the
housing will be deactivated. I the controller ails to reach parameters
required or entering into the operation mode within 30 minutes rom
activation o the fire-up unction, the "Unable to fire up" message will
appear on the display. In such a case, the ire-up cycle needs to be
restarted
Operation– The operation cycle is the basic unctionality o the
regulator, in which the Power o the blow is regulated by the user. I the
temperature rises above the set temperature a so called suspension
mode will be activated.
uspension mode – this mode will be activated automatically i the
temperature is equal or higher than the set temperature. In that case, in
order to ensure smooth decrease o temperature o circulating water it is
necessary to properly set operation times o the an.
Damping – i boiler temperature drops by 2oC below the fire-up
threshold and ails to rise above this value or 60 minutes (de ault
damping time), the regulator will switch to the damping mode. While in
this mode, the an is deactivated and the display shows "Damping".
In case o voltage loss, the regulator ceases to operate. When power is
restored, the controller returns to operation with previously set
parameters using its built-in memory.
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