Tech Controllers ST-976 User Manual page 36

Sensor 1 selection
This option is used to select which temperature sensor should be used to provide data for controlling the
operation of the device connected to the additional contact – the heat source (activation threshold).
Sensor 2 selection
This option is used to select which temperature sensor should be used to provide data for controlling the
operation of the device connected to the additional contact – (pre‐set temperature).
Circulating pump
TYPE OF
DEVICE
When this function is active, the additional pump serves as the circulating pump. The pump controls the vale
which mixes the hot water between the CH boiler and the DHW receivers. The following parameters need to
be configured for the circulating pump to work correctly:
Operation time
This parameters defines the time of pump operation during its activity.
Pause time
This parameter defines the period of time between circulating pump activations ‐ the period of time when the
pump remains inactive.
Operation schedule
The user may program a daily schedule of pump operation and inactivity, with the accuracy of 30 minutes. The
pump will be enabled at the frequency defined in Pause time parameter and it will remain active for the time
defined as Operation time.
To configure the operation schedule, follow the same steps as for CH boiler operation schedule:
 4.3.6.1 CH boiler operation schedule, page: 17
Floor pump
36
TYPE OF
DEVICE
Operation time
Pause time
Operation schedule
Room regulator
Temperature threshold
Maximum temperature
Sensor 1 selection
Sensor 2 selection