Vi.a.11) Minimum Opening; Vi.a.12) Proportionality Coefficient; Vi.a.13) Calibration; Vi.a.14) Measurement Pause - Tech Controllers ST-979 User Manual

VI.a.11)
The parameter determines the smallest valve opening. Thanks to this parameter, the valve may
be opened minimally, to maintain the smallest flow.
VI.a.12)
Proportionality coefficient is used for defining valve stroke. The closer the pre-set temperature,
the smaller the stroke. If the coefficient value is high, the valve takes less time to open but at the
same time the opening degree is less accurate. The following formula is used to calculate the
percent of a single opening:
(PRE-SET_TEMP - SENSOR_TEMP) * (PROP_COEFF /10)
VI.a.13)
This function enables the user to calibrate a given built-in valve at any time. During this process
the valve is restored to its safe position – in the case of CH valve it is fully opened whereas in the
case of floor valve it is closed.
VI.a.14)
This parameter determines the frequency of water temperature measurement (control) behind
the CH or DHW valve. If the sensor indicates a change in temperature (deviation from the pre-
set value), the electric valve will open or close by the pre-set stroke, in order to return to the pre-
set temperature.
VI.a.15)
This function enables the user to restore the factory settings for a particular valve.
VI.a.16)
NOTE
Function available only for additional valves.
It the case of built-in valves, it is necessary to register the valve by entering the module number
(found on the module housing e.g. ST-61N) in order to configure its parameters.
VI.a.17)
NOTE
Function available only for additional valves.
This option concerns the return sensor and the external sensor. It allows the user to decide which
sensors should provide data for controlling the operation of the additional valve (the sensors of
the valve module or the sensors of the main controller).
VI.a.18)
NOTE
Function available only for additional valves.
This option is used to remove the valve from the controller memory. Valve removal is used e.g.
at disassembling the valve or module replacement (re-registration of a new module is necessary).
Minimum opening
Proportionality coefficient
Calibration
Measurement pause
Factory settings
Valve registration
Sensor selection
Valve removal
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