4.1.6.
ACTUATORS
➢
Settings
•
SIGMA
- the function enables seamless control of the electric actuator. The user can set the
minimum and
maximum openings of the valve
–
this means that the degree of opening and closing of the valve will never
exceed these values. In addition, the user adjusts the
Range
parameter, which determines at which room
temperature the valve will start to close and open.
CAUTION
The Sigma function is only available for STT-868 or STT-869 actuators.
Example:
Zone preset temperature: 23˚C
Minimum opening: 30%
Maximum opening: 90%
Range: 5˚C
Hysteresis: 2˚C
With the above settings, the actuator
will start to close once the temperature in the zone reaches 18°C (preset temperature
minus the range value). The minimum opening will occur when the zone temperature reaches the set point.
Once the set point is reached, the temperature in the zone will start to drop. When it reaches 21°C (set temperature minus
hysteresis value), the actuator
will start to open reaching maximum opening when the temperature in the zone reaches 18°C.
•
Protection
- When this function is selected, the controller checks the temperature. If the set temperature
is exceeded by the number of degrees in the
Range
parameter, then all actuators in a given zone will be
closed (0% opening). This function only works with the SIGMA function enabled.
➢
Actuator 1-6
- option enables the user to register a wireless actuator. To do this, select
Register
and briefly press
the communication button on the actuator. After successful registration, an additional
information
function
appears, where the user can view the actuator parameters, e.g. battery status, range, etc. It is also possible to delete
one or all actuators at the same time.
