Tech Controllers ST-976 User Manual page 30

Weather‐based control
BUILT‐IN
ADDITIONAL
VALVE 1, 2
For the function of weather control to be active, the external sensor mustn't be exposed to sunlight or
influenced by weather conditions. After it has been installed and connected, weather‐based control function
needs to be activated in the controller menu.
Heating curve
Heating curve – a curve according to which the pre‐set controller temperature is determined, on the basis of
external temperature. In order for the valve to operate properly, the user defines the pre‐set temperature
value (downstream of the valve) for respective values of external temperatures ‐20°C, ‐10°C, 0°C and 10°C.
How to program the heating curve:
 Select Heating curve option.
 Use the icons
 Define the pre‐set temperature for a given threshold using the icons:
 Once all values have been configured, select
Room regulator
BUILT‐IN
VALVE /
ADDITIONAL
VALVE 1, 2
This function enables the user to select and configure the operation of the room regulator which will control
the valve.
30
VALVE /
to select the external temperature threshold.
OFF
ON
Heating curve
.
Control without room regulator
Standard regulator
RS regulator ‐ proportional
Standard valve regulator
Room reg temp lower
Valve closing
Room temperature difference
Change in the set temp
.